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"
20 #include <arpa/inet.h>
22 #include <sys/socket.h>
23 #include <netinet/in.h>
25 #include "tnl-arp-cache.h"
30 #include "byte-order.h"
35 #include "dynamic-string.h"
40 #include "mac-learning.h"
41 #include "mcast-snooping.h"
42 #include "meta-flow.h"
43 #include "multipath.h"
44 #include "netdev-vport.h"
47 #include "odp-execute.h"
48 #include "ofp-actions.h"
49 #include "ofproto/ofproto-dpif-ipfix.h"
50 #include "ofproto/ofproto-dpif-mirror.h"
51 #include "ofproto/ofproto-dpif-monitor.h"
52 #include "ofproto/ofproto-dpif-sflow.h"
53 #include "ofproto/ofproto-dpif.h"
54 #include "ofproto/ofproto-provider.h"
55 #include "packet-dpif.h"
56 #include "ovs-router.h"
57 #include "tnl-ports.h"
61 COVERAGE_DEFINE(xlate_actions
);
62 COVERAGE_DEFINE(xlate_actions_oversize
);
63 COVERAGE_DEFINE(xlate_actions_too_many_output
);
64 COVERAGE_DEFINE(xlate_actions_mpls_overflow
);
66 VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate
);
68 /* Maximum depth of flow table recursion (due to resubmit actions) in a
69 * flow translation. */
70 #define MAX_RESUBMIT_RECURSION 64
71 #define MAX_INTERNAL_RESUBMITS 1 /* Max resbmits allowed using rules in
74 /* Timeout for internal rules created to handle recirculation */
75 #define RECIRC_TIMEOUT 60
77 /* Maximum number of resubmit actions in a flow translation, whether they are
78 * recursive or not. */
79 #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION)
82 struct hmap_node hmap_node
; /* Node in global 'xbridges' map. */
83 struct ofproto_dpif
*ofproto
; /* Key in global 'xbridges' map. */
85 struct list xbundles
; /* Owned xbundles. */
86 struct hmap xports
; /* Indexed by ofp_port. */
88 char *name
; /* Name used in log messages. */
89 struct dpif
*dpif
; /* Datapath interface. */
90 struct mac_learning
*ml
; /* Mac learning handle. */
91 struct mcast_snooping
*ms
; /* Multicast Snooping handle. */
92 struct mbridge
*mbridge
; /* Mirroring. */
93 struct dpif_sflow
*sflow
; /* SFlow handle, or null. */
94 struct dpif_ipfix
*ipfix
; /* Ipfix handle, or null. */
95 struct netflow
*netflow
; /* Netflow handle, or null. */
96 struct stp
*stp
; /* STP or null if disabled. */
97 struct rstp
*rstp
; /* RSTP or null if disabled. */
99 bool has_in_band
; /* Bridge has in band control? */
100 bool forward_bpdu
; /* Bridge forwards STP BPDUs? */
102 /* True if the datapath supports recirculation. */
105 /* True if the datapath supports variable-length
106 * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions.
107 * False if the datapath supports only 8-byte (or shorter) userdata. */
108 bool variable_length_userdata
;
110 /* Number of MPLS label stack entries that the datapath supports
112 size_t max_mpls_depth
;
114 /* True if the datapath supports masked data in OVS_ACTION_ATTR_SET
116 bool masked_set_action
;
120 struct hmap_node hmap_node
; /* In global 'xbundles' map. */
121 struct ofbundle
*ofbundle
; /* Key in global 'xbundles' map. */
123 struct list list_node
; /* In parent 'xbridges' list. */
124 struct xbridge
*xbridge
; /* Parent xbridge. */
126 struct list xports
; /* Contains "struct xport"s. */
128 char *name
; /* Name used in log messages. */
129 struct bond
*bond
; /* Nonnull iff more than one port. */
130 struct lacp
*lacp
; /* LACP handle or null. */
132 enum port_vlan_mode vlan_mode
; /* VLAN mode. */
133 int vlan
; /* -1=trunk port, else a 12-bit VLAN ID. */
134 unsigned long *trunks
; /* Bitmap of trunked VLANs, if 'vlan' == -1.
135 * NULL if all VLANs are trunked. */
136 bool use_priority_tags
; /* Use 802.1p tag for frames in VLAN 0? */
137 bool floodable
; /* No port has OFPUTIL_PC_NO_FLOOD set? */
141 struct hmap_node hmap_node
; /* Node in global 'xports' map. */
142 struct ofport_dpif
*ofport
; /* Key in global 'xports map. */
144 struct hmap_node ofp_node
; /* Node in parent xbridge 'xports' map. */
145 ofp_port_t ofp_port
; /* Key in parent xbridge 'xports' map. */
147 odp_port_t odp_port
; /* Datapath port number or ODPP_NONE. */
149 struct list bundle_node
; /* In parent xbundle (if it exists). */
150 struct xbundle
*xbundle
; /* Parent xbundle or null. */
152 struct netdev
*netdev
; /* 'ofport''s netdev. */
154 struct xbridge
*xbridge
; /* Parent bridge. */
155 struct xport
*peer
; /* Patch port peer or null. */
157 enum ofputil_port_config config
; /* OpenFlow port configuration. */
158 enum ofputil_port_state state
; /* OpenFlow port state. */
159 int stp_port_no
; /* STP port number or -1 if not in use. */
160 struct rstp_port
*rstp_port
; /* RSTP port or null. */
162 struct hmap skb_priorities
; /* Map of 'skb_priority_to_dscp's. */
164 bool may_enable
; /* May be enabled in bonds. */
165 bool is_tunnel
; /* Is a tunnel port. */
167 struct cfm
*cfm
; /* CFM handle or null. */
168 struct bfd
*bfd
; /* BFD handle or null. */
172 struct xlate_in
*xin
;
173 struct xlate_out
*xout
;
175 const struct xbridge
*xbridge
;
177 /* Flow at the last commit. */
178 struct flow base_flow
;
180 /* Tunnel IP destination address as received. This is stored separately
181 * as the base_flow.tunnel is cleared on init to reflect the datapath
182 * behavior. Used to make sure not to send tunneled output to ourselves,
183 * which might lead to an infinite loop. This could happen easily
184 * if a tunnel is marked as 'ip_remote=flow', and the flow does not
185 * actually set the tun_dst field. */
186 ovs_be32 orig_tunnel_ip_dst
;
188 /* Stack for the push and pop actions. Each stack element is of type
189 * "union mf_subvalue". */
190 union mf_subvalue init_stack
[1024 / sizeof(union mf_subvalue
)];
193 /* The rule that we are currently translating, or NULL. */
194 struct rule_dpif
*rule
;
196 /* Resubmit statistics, via xlate_table_action(). */
197 int recurse
; /* Current resubmit nesting depth. */
198 int resubmits
; /* Total number of resubmits. */
199 bool in_group
; /* Currently translating ofgroup, if true. */
201 uint32_t orig_skb_priority
; /* Priority when packet arrived. */
202 uint8_t table_id
; /* OpenFlow table ID where flow was found. */
203 uint32_t sflow_n_outputs
; /* Number of output ports. */
204 odp_port_t sflow_odp_port
; /* Output port for composing sFlow action. */
205 uint16_t user_cookie_offset
;/* Used for user_action_cookie fixup. */
206 bool exit
; /* No further actions should be processed. */
208 bool use_recirc
; /* Should generate recirc? */
209 struct xlate_recirc recirc
; /* Information used for generating
210 * recirculation actions */
212 /* True if a packet was but is no longer MPLS (due to an MPLS pop action).
213 * This is a trigger for recirculation in cases where translating an action
214 * or looking up a flow requires access to the fields of the packet after
215 * the MPLS label stack that was originally present. */
218 /* OpenFlow 1.1+ action set.
220 * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS.
221 * When translation is otherwise complete, ofpacts_execute_action_set()
222 * converts it to a set of "struct ofpact"s that can be translated into
223 * datapath actions. */
224 bool action_set_has_group
; /* Action set contains OFPACT_GROUP? */
225 struct ofpbuf action_set
; /* Action set. */
226 uint64_t action_set_stub
[1024 / 8];
229 /* A controller may use OFPP_NONE as the ingress port to indicate that
230 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
231 * when an input bundle is needed for validation (e.g., mirroring or
232 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
233 * any 'port' structs, so care must be taken when dealing with it. */
234 static struct xbundle ofpp_none_bundle
= {
236 .vlan_mode
= PORT_VLAN_TRUNK
239 /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from
240 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
241 * traffic egressing the 'ofport' with that priority should be marked with. */
242 struct skb_priority_to_dscp
{
243 struct hmap_node hmap_node
; /* Node in 'ofport_dpif''s 'skb_priorities'. */
244 uint32_t skb_priority
; /* Priority of this queue (see struct flow). */
246 uint8_t dscp
; /* DSCP bits to mark outgoing traffic with. */
262 /* xlate_cache entries hold enough information to perform the side effects of
263 * xlate_actions() for a rule, without needing to perform rule translation
264 * from scratch. The primary usage of these is to submit statistics to objects
265 * that a flow relates to, although they may be used for other effects as well
266 * (for instance, refreshing hard timeouts for learned flows). */
270 struct rule_dpif
*rule
;
277 struct netflow
*netflow
;
282 struct mbridge
*mbridge
;
283 mirror_mask_t mirrors
;
291 struct ofproto_dpif
*ofproto
;
292 struct ofputil_flow_mod
*fm
;
293 struct ofpbuf
*ofpacts
;
296 struct ofproto_dpif
*ofproto
;
301 struct rule_dpif
*rule
;
306 struct group_dpif
*group
;
307 struct ofputil_bucket
*bucket
;
310 char br_name
[IFNAMSIZ
];
316 #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \
317 entries = xcache->entries; \
318 for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \
320 entry = ofpbuf_try_pull(&entries, sizeof *entry))
323 struct ofpbuf entries
;
326 /* Xlate config contains hash maps of all bridges, bundles and ports.
327 * Xcfgp contains the pointer to the current xlate configuration.
328 * When the main thread needs to change the configuration, it copies xcfgp to
329 * new_xcfg and edits new_xcfg. This enables the use of RCU locking which
330 * does not block handler and revalidator threads. */
332 struct hmap xbridges
;
333 struct hmap xbundles
;
336 static OVSRCU_TYPE(struct xlate_cfg
*) xcfgp
= OVSRCU_INITIALIZER(NULL
);
337 static struct xlate_cfg
*new_xcfg
= NULL
;
339 static bool may_receive(const struct xport
*, struct xlate_ctx
*);
340 static void do_xlate_actions(const struct ofpact
*, size_t ofpacts_len
,
342 static void xlate_normal(struct xlate_ctx
*);
343 static inline void xlate_report(struct xlate_ctx
*, const char *);
344 static void xlate_table_action(struct xlate_ctx
*, ofp_port_t in_port
,
345 uint8_t table_id
, bool may_packet_in
,
346 bool honor_table_miss
);
347 static bool input_vid_is_valid(uint16_t vid
, struct xbundle
*, bool warn
);
348 static uint16_t input_vid_to_vlan(const struct xbundle
*, uint16_t vid
);
349 static void output_normal(struct xlate_ctx
*, const struct xbundle
*,
351 static void compose_output_action(struct xlate_ctx
*, ofp_port_t ofp_port
);
353 static struct xbridge
*xbridge_lookup(struct xlate_cfg
*,
354 const struct ofproto_dpif
*);
355 static struct xbundle
*xbundle_lookup(struct xlate_cfg
*,
356 const struct ofbundle
*);
357 static struct xport
*xport_lookup(struct xlate_cfg
*,
358 const struct ofport_dpif
*);
359 static struct xport
*get_ofp_port(const struct xbridge
*, ofp_port_t ofp_port
);
360 static struct skb_priority_to_dscp
*get_skb_priority(const struct xport
*,
361 uint32_t skb_priority
);
362 static void clear_skb_priorities(struct xport
*);
363 static size_t count_skb_priorities(const struct xport
*);
364 static bool dscp_from_skb_priority(const struct xport
*, uint32_t skb_priority
,
367 static struct xc_entry
*xlate_cache_add_entry(struct xlate_cache
*xc
,
369 static void xlate_xbridge_init(struct xlate_cfg
*, struct xbridge
*);
370 static void xlate_xbundle_init(struct xlate_cfg
*, struct xbundle
*);
371 static void xlate_xport_init(struct xlate_cfg
*, struct xport
*);
372 static void xlate_xbridge_set(struct xbridge
*, struct dpif
*,
373 const struct mac_learning
*, struct stp
*,
374 struct rstp
*, const struct mcast_snooping
*,
375 const struct mbridge
*,
376 const struct dpif_sflow
*,
377 const struct dpif_ipfix
*,
378 const struct netflow
*,
379 bool forward_bpdu
, bool has_in_band
,
381 bool variable_length_userdata
,
382 size_t max_mpls_depth
,
383 bool masked_set_action
);
384 static void xlate_xbundle_set(struct xbundle
*xbundle
,
385 enum port_vlan_mode vlan_mode
, int vlan
,
386 unsigned long *trunks
, bool use_priority_tags
,
387 const struct bond
*bond
, const struct lacp
*lacp
,
389 static void xlate_xport_set(struct xport
*xport
, odp_port_t odp_port
,
390 const struct netdev
*netdev
, const struct cfm
*cfm
,
391 const struct bfd
*bfd
, int stp_port_no
,
392 const struct rstp_port
*rstp_port
,
393 enum ofputil_port_config config
,
394 enum ofputil_port_state state
, bool is_tunnel
,
396 static void xlate_xbridge_remove(struct xlate_cfg
*, struct xbridge
*);
397 static void xlate_xbundle_remove(struct xlate_cfg
*, struct xbundle
*);
398 static void xlate_xport_remove(struct xlate_cfg
*, struct xport
*);
399 static void xlate_xbridge_copy(struct xbridge
*);
400 static void xlate_xbundle_copy(struct xbridge
*, struct xbundle
*);
401 static void xlate_xport_copy(struct xbridge
*, struct xbundle
*,
403 static void xlate_xcfg_free(struct xlate_cfg
*);
406 xlate_report(struct xlate_ctx
*ctx
, const char *s
)
408 if (OVS_UNLIKELY(ctx
->xin
->report_hook
)) {
409 ctx
->xin
->report_hook(ctx
->xin
, s
, ctx
->recurse
);
414 xlate_xbridge_init(struct xlate_cfg
*xcfg
, struct xbridge
*xbridge
)
416 list_init(&xbridge
->xbundles
);
417 hmap_init(&xbridge
->xports
);
418 hmap_insert(&xcfg
->xbridges
, &xbridge
->hmap_node
,
419 hash_pointer(xbridge
->ofproto
, 0));
423 xlate_xbundle_init(struct xlate_cfg
*xcfg
, struct xbundle
*xbundle
)
425 list_init(&xbundle
->xports
);
426 list_insert(&xbundle
->xbridge
->xbundles
, &xbundle
->list_node
);
427 hmap_insert(&xcfg
->xbundles
, &xbundle
->hmap_node
,
428 hash_pointer(xbundle
->ofbundle
, 0));
432 xlate_xport_init(struct xlate_cfg
*xcfg
, struct xport
*xport
)
434 hmap_init(&xport
->skb_priorities
);
435 hmap_insert(&xcfg
->xports
, &xport
->hmap_node
,
436 hash_pointer(xport
->ofport
, 0));
437 hmap_insert(&xport
->xbridge
->xports
, &xport
->ofp_node
,
438 hash_ofp_port(xport
->ofp_port
));
442 xlate_xbridge_set(struct xbridge
*xbridge
,
444 const struct mac_learning
*ml
, struct stp
*stp
,
445 struct rstp
*rstp
, const struct mcast_snooping
*ms
,
446 const struct mbridge
*mbridge
,
447 const struct dpif_sflow
*sflow
,
448 const struct dpif_ipfix
*ipfix
,
449 const struct netflow
*netflow
,
450 bool forward_bpdu
, bool has_in_band
,
452 bool variable_length_userdata
,
453 size_t max_mpls_depth
,
454 bool masked_set_action
)
456 if (xbridge
->ml
!= ml
) {
457 mac_learning_unref(xbridge
->ml
);
458 xbridge
->ml
= mac_learning_ref(ml
);
461 if (xbridge
->ms
!= ms
) {
462 mcast_snooping_unref(xbridge
->ms
);
463 xbridge
->ms
= mcast_snooping_ref(ms
);
466 if (xbridge
->mbridge
!= mbridge
) {
467 mbridge_unref(xbridge
->mbridge
);
468 xbridge
->mbridge
= mbridge_ref(mbridge
);
471 if (xbridge
->sflow
!= sflow
) {
472 dpif_sflow_unref(xbridge
->sflow
);
473 xbridge
->sflow
= dpif_sflow_ref(sflow
);
476 if (xbridge
->ipfix
!= ipfix
) {
477 dpif_ipfix_unref(xbridge
->ipfix
);
478 xbridge
->ipfix
= dpif_ipfix_ref(ipfix
);
481 if (xbridge
->stp
!= stp
) {
482 stp_unref(xbridge
->stp
);
483 xbridge
->stp
= stp_ref(stp
);
486 if (xbridge
->rstp
!= rstp
) {
487 rstp_unref(xbridge
->rstp
);
488 xbridge
->rstp
= rstp_ref(rstp
);
491 if (xbridge
->netflow
!= netflow
) {
492 netflow_unref(xbridge
->netflow
);
493 xbridge
->netflow
= netflow_ref(netflow
);
496 xbridge
->dpif
= dpif
;
497 xbridge
->forward_bpdu
= forward_bpdu
;
498 xbridge
->has_in_band
= has_in_band
;
499 xbridge
->enable_recirc
= enable_recirc
;
500 xbridge
->variable_length_userdata
= variable_length_userdata
;
501 xbridge
->max_mpls_depth
= max_mpls_depth
;
502 xbridge
->masked_set_action
= masked_set_action
;
506 xlate_xbundle_set(struct xbundle
*xbundle
,
507 enum port_vlan_mode vlan_mode
, int vlan
,
508 unsigned long *trunks
, bool use_priority_tags
,
509 const struct bond
*bond
, const struct lacp
*lacp
,
512 ovs_assert(xbundle
->xbridge
);
514 xbundle
->vlan_mode
= vlan_mode
;
515 xbundle
->vlan
= vlan
;
516 xbundle
->trunks
= trunks
;
517 xbundle
->use_priority_tags
= use_priority_tags
;
518 xbundle
->floodable
= floodable
;
520 if (xbundle
->bond
!= bond
) {
521 bond_unref(xbundle
->bond
);
522 xbundle
->bond
= bond_ref(bond
);
525 if (xbundle
->lacp
!= lacp
) {
526 lacp_unref(xbundle
->lacp
);
527 xbundle
->lacp
= lacp_ref(lacp
);
532 xlate_xport_set(struct xport
*xport
, odp_port_t odp_port
,
533 const struct netdev
*netdev
, const struct cfm
*cfm
,
534 const struct bfd
*bfd
, int stp_port_no
,
535 const struct rstp_port
* rstp_port
,
536 enum ofputil_port_config config
, enum ofputil_port_state state
,
537 bool is_tunnel
, bool may_enable
)
539 xport
->config
= config
;
540 xport
->state
= state
;
541 xport
->stp_port_no
= stp_port_no
;
542 xport
->is_tunnel
= is_tunnel
;
543 xport
->may_enable
= may_enable
;
544 xport
->odp_port
= odp_port
;
546 if (xport
->rstp_port
!= rstp_port
) {
547 rstp_port_unref(xport
->rstp_port
);
548 xport
->rstp_port
= rstp_port_ref(rstp_port
);
551 if (xport
->cfm
!= cfm
) {
552 cfm_unref(xport
->cfm
);
553 xport
->cfm
= cfm_ref(cfm
);
556 if (xport
->bfd
!= bfd
) {
557 bfd_unref(xport
->bfd
);
558 xport
->bfd
= bfd_ref(bfd
);
561 if (xport
->netdev
!= netdev
) {
562 netdev_close(xport
->netdev
);
563 xport
->netdev
= netdev_ref(netdev
);
568 xlate_xbridge_copy(struct xbridge
*xbridge
)
570 struct xbundle
*xbundle
;
572 struct xbridge
*new_xbridge
= xzalloc(sizeof *xbridge
);
573 new_xbridge
->ofproto
= xbridge
->ofproto
;
574 new_xbridge
->name
= xstrdup(xbridge
->name
);
575 xlate_xbridge_init(new_xcfg
, new_xbridge
);
577 xlate_xbridge_set(new_xbridge
,
578 xbridge
->dpif
, xbridge
->ml
, xbridge
->stp
,
579 xbridge
->rstp
, xbridge
->ms
, xbridge
->mbridge
,
580 xbridge
->sflow
, xbridge
->ipfix
, xbridge
->netflow
,
581 xbridge
->forward_bpdu
,
582 xbridge
->has_in_band
, xbridge
->enable_recirc
,
583 xbridge
->variable_length_userdata
,
584 xbridge
->max_mpls_depth
, xbridge
->masked_set_action
);
585 LIST_FOR_EACH (xbundle
, list_node
, &xbridge
->xbundles
) {
586 xlate_xbundle_copy(new_xbridge
, xbundle
);
589 /* Copy xports which are not part of a xbundle */
590 HMAP_FOR_EACH (xport
, ofp_node
, &xbridge
->xports
) {
591 if (!xport
->xbundle
) {
592 xlate_xport_copy(new_xbridge
, NULL
, xport
);
598 xlate_xbundle_copy(struct xbridge
*xbridge
, struct xbundle
*xbundle
)
601 struct xbundle
*new_xbundle
= xzalloc(sizeof *xbundle
);
602 new_xbundle
->ofbundle
= xbundle
->ofbundle
;
603 new_xbundle
->xbridge
= xbridge
;
604 new_xbundle
->name
= xstrdup(xbundle
->name
);
605 xlate_xbundle_init(new_xcfg
, new_xbundle
);
607 xlate_xbundle_set(new_xbundle
, xbundle
->vlan_mode
,
608 xbundle
->vlan
, xbundle
->trunks
,
609 xbundle
->use_priority_tags
, xbundle
->bond
, xbundle
->lacp
,
611 LIST_FOR_EACH (xport
, bundle_node
, &xbundle
->xports
) {
612 xlate_xport_copy(xbridge
, new_xbundle
, xport
);
617 xlate_xport_copy(struct xbridge
*xbridge
, struct xbundle
*xbundle
,
620 struct skb_priority_to_dscp
*pdscp
, *new_pdscp
;
621 struct xport
*new_xport
= xzalloc(sizeof *xport
);
622 new_xport
->ofport
= xport
->ofport
;
623 new_xport
->ofp_port
= xport
->ofp_port
;
624 new_xport
->xbridge
= xbridge
;
625 xlate_xport_init(new_xcfg
, new_xport
);
627 xlate_xport_set(new_xport
, xport
->odp_port
, xport
->netdev
, xport
->cfm
,
628 xport
->bfd
, xport
->stp_port_no
, xport
->rstp_port
,
629 xport
->config
, xport
->state
, xport
->is_tunnel
,
633 struct xport
*peer
= xport_lookup(new_xcfg
, xport
->peer
->ofport
);
635 new_xport
->peer
= peer
;
636 new_xport
->peer
->peer
= new_xport
;
641 new_xport
->xbundle
= xbundle
;
642 list_insert(&new_xport
->xbundle
->xports
, &new_xport
->bundle_node
);
645 HMAP_FOR_EACH (pdscp
, hmap_node
, &xport
->skb_priorities
) {
646 new_pdscp
= xmalloc(sizeof *pdscp
);
647 new_pdscp
->skb_priority
= pdscp
->skb_priority
;
648 new_pdscp
->dscp
= pdscp
->dscp
;
649 hmap_insert(&new_xport
->skb_priorities
, &new_pdscp
->hmap_node
,
650 hash_int(new_pdscp
->skb_priority
, 0));
654 /* Sets the current xlate configuration to new_xcfg and frees the old xlate
655 * configuration in xcfgp.
657 * This needs to be called after editing the xlate configuration.
659 * Functions that edit the new xlate configuration are
660 * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove.
666 * edit_xlate_configuration();
668 * xlate_txn_commit(); */
670 xlate_txn_commit(void)
672 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
674 ovsrcu_set(&xcfgp
, new_xcfg
);
675 ovsrcu_synchronize();
676 xlate_xcfg_free(xcfg
);
680 /* Copies the current xlate configuration in xcfgp to new_xcfg.
682 * This needs to be called prior to editing the xlate configuration. */
684 xlate_txn_start(void)
686 struct xbridge
*xbridge
;
687 struct xlate_cfg
*xcfg
;
689 ovs_assert(!new_xcfg
);
691 new_xcfg
= xmalloc(sizeof *new_xcfg
);
692 hmap_init(&new_xcfg
->xbridges
);
693 hmap_init(&new_xcfg
->xbundles
);
694 hmap_init(&new_xcfg
->xports
);
696 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
701 HMAP_FOR_EACH (xbridge
, hmap_node
, &xcfg
->xbridges
) {
702 xlate_xbridge_copy(xbridge
);
708 xlate_xcfg_free(struct xlate_cfg
*xcfg
)
710 struct xbridge
*xbridge
, *next_xbridge
;
716 HMAP_FOR_EACH_SAFE (xbridge
, next_xbridge
, hmap_node
, &xcfg
->xbridges
) {
717 xlate_xbridge_remove(xcfg
, xbridge
);
720 hmap_destroy(&xcfg
->xbridges
);
721 hmap_destroy(&xcfg
->xbundles
);
722 hmap_destroy(&xcfg
->xports
);
727 xlate_ofproto_set(struct ofproto_dpif
*ofproto
, const char *name
,
729 const struct mac_learning
*ml
, struct stp
*stp
,
730 struct rstp
*rstp
, const struct mcast_snooping
*ms
,
731 const struct mbridge
*mbridge
,
732 const struct dpif_sflow
*sflow
,
733 const struct dpif_ipfix
*ipfix
,
734 const struct netflow
*netflow
,
735 bool forward_bpdu
, bool has_in_band
, bool enable_recirc
,
736 bool variable_length_userdata
, size_t max_mpls_depth
,
737 bool masked_set_action
)
739 struct xbridge
*xbridge
;
741 ovs_assert(new_xcfg
);
743 xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
745 xbridge
= xzalloc(sizeof *xbridge
);
746 xbridge
->ofproto
= ofproto
;
748 xlate_xbridge_init(new_xcfg
, xbridge
);
752 xbridge
->name
= xstrdup(name
);
754 xlate_xbridge_set(xbridge
, dpif
, ml
, stp
, rstp
, ms
, mbridge
, sflow
, ipfix
,
755 netflow
, forward_bpdu
, has_in_band
, enable_recirc
,
756 variable_length_userdata
, max_mpls_depth
,
761 xlate_xbridge_remove(struct xlate_cfg
*xcfg
, struct xbridge
*xbridge
)
763 struct xbundle
*xbundle
, *next_xbundle
;
764 struct xport
*xport
, *next_xport
;
770 HMAP_FOR_EACH_SAFE (xport
, next_xport
, ofp_node
, &xbridge
->xports
) {
771 xlate_xport_remove(xcfg
, xport
);
774 LIST_FOR_EACH_SAFE (xbundle
, next_xbundle
, list_node
, &xbridge
->xbundles
) {
775 xlate_xbundle_remove(xcfg
, xbundle
);
778 hmap_remove(&xcfg
->xbridges
, &xbridge
->hmap_node
);
779 mac_learning_unref(xbridge
->ml
);
780 mcast_snooping_unref(xbridge
->ms
);
781 mbridge_unref(xbridge
->mbridge
);
782 dpif_sflow_unref(xbridge
->sflow
);
783 dpif_ipfix_unref(xbridge
->ipfix
);
784 stp_unref(xbridge
->stp
);
785 rstp_unref(xbridge
->rstp
);
786 hmap_destroy(&xbridge
->xports
);
792 xlate_remove_ofproto(struct ofproto_dpif
*ofproto
)
794 struct xbridge
*xbridge
;
796 ovs_assert(new_xcfg
);
798 xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
799 xlate_xbridge_remove(new_xcfg
, xbridge
);
803 xlate_bundle_set(struct ofproto_dpif
*ofproto
, struct ofbundle
*ofbundle
,
804 const char *name
, enum port_vlan_mode vlan_mode
, int vlan
,
805 unsigned long *trunks
, bool use_priority_tags
,
806 const struct bond
*bond
, const struct lacp
*lacp
,
809 struct xbundle
*xbundle
;
811 ovs_assert(new_xcfg
);
813 xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
815 xbundle
= xzalloc(sizeof *xbundle
);
816 xbundle
->ofbundle
= ofbundle
;
817 xbundle
->xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
819 xlate_xbundle_init(new_xcfg
, xbundle
);
823 xbundle
->name
= xstrdup(name
);
825 xlate_xbundle_set(xbundle
, vlan_mode
, vlan
, trunks
,
826 use_priority_tags
, bond
, lacp
, floodable
);
830 xlate_xbundle_remove(struct xlate_cfg
*xcfg
, struct xbundle
*xbundle
)
832 struct xport
*xport
, *next
;
838 LIST_FOR_EACH_SAFE (xport
, next
, bundle_node
, &xbundle
->xports
) {
839 list_remove(&xport
->bundle_node
);
840 xport
->xbundle
= NULL
;
843 hmap_remove(&xcfg
->xbundles
, &xbundle
->hmap_node
);
844 list_remove(&xbundle
->list_node
);
845 bond_unref(xbundle
->bond
);
846 lacp_unref(xbundle
->lacp
);
852 xlate_bundle_remove(struct ofbundle
*ofbundle
)
854 struct xbundle
*xbundle
;
856 ovs_assert(new_xcfg
);
858 xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
859 xlate_xbundle_remove(new_xcfg
, xbundle
);
863 xlate_ofport_set(struct ofproto_dpif
*ofproto
, struct ofbundle
*ofbundle
,
864 struct ofport_dpif
*ofport
, ofp_port_t ofp_port
,
865 odp_port_t odp_port
, const struct netdev
*netdev
,
866 const struct cfm
*cfm
, const struct bfd
*bfd
,
867 struct ofport_dpif
*peer
, int stp_port_no
,
868 const struct rstp_port
*rstp_port
,
869 const struct ofproto_port_queue
*qdscp_list
, size_t n_qdscp
,
870 enum ofputil_port_config config
,
871 enum ofputil_port_state state
, bool is_tunnel
,
877 ovs_assert(new_xcfg
);
879 xport
= xport_lookup(new_xcfg
, ofport
);
881 xport
= xzalloc(sizeof *xport
);
882 xport
->ofport
= ofport
;
883 xport
->xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
884 xport
->ofp_port
= ofp_port
;
886 xlate_xport_init(new_xcfg
, xport
);
889 ovs_assert(xport
->ofp_port
== ofp_port
);
891 xlate_xport_set(xport
, odp_port
, netdev
, cfm
, bfd
, stp_port_no
,
892 rstp_port
, config
, state
, is_tunnel
, may_enable
);
895 xport
->peer
->peer
= NULL
;
897 xport
->peer
= xport_lookup(new_xcfg
, peer
);
899 xport
->peer
->peer
= xport
;
902 if (xport
->xbundle
) {
903 list_remove(&xport
->bundle_node
);
905 xport
->xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
906 if (xport
->xbundle
) {
907 list_insert(&xport
->xbundle
->xports
, &xport
->bundle_node
);
910 clear_skb_priorities(xport
);
911 for (i
= 0; i
< n_qdscp
; i
++) {
912 struct skb_priority_to_dscp
*pdscp
;
913 uint32_t skb_priority
;
915 if (dpif_queue_to_priority(xport
->xbridge
->dpif
, qdscp_list
[i
].queue
,
920 pdscp
= xmalloc(sizeof *pdscp
);
921 pdscp
->skb_priority
= skb_priority
;
922 pdscp
->dscp
= (qdscp_list
[i
].dscp
<< 2) & IP_DSCP_MASK
;
923 hmap_insert(&xport
->skb_priorities
, &pdscp
->hmap_node
,
924 hash_int(pdscp
->skb_priority
, 0));
929 xlate_xport_remove(struct xlate_cfg
*xcfg
, struct xport
*xport
)
936 xport
->peer
->peer
= NULL
;
940 if (xport
->xbundle
) {
941 list_remove(&xport
->bundle_node
);
944 clear_skb_priorities(xport
);
945 hmap_destroy(&xport
->skb_priorities
);
947 hmap_remove(&xcfg
->xports
, &xport
->hmap_node
);
948 hmap_remove(&xport
->xbridge
->xports
, &xport
->ofp_node
);
950 netdev_close(xport
->netdev
);
951 rstp_port_unref(xport
->rstp_port
);
952 cfm_unref(xport
->cfm
);
953 bfd_unref(xport
->bfd
);
958 xlate_ofport_remove(struct ofport_dpif
*ofport
)
962 ovs_assert(new_xcfg
);
964 xport
= xport_lookup(new_xcfg
, ofport
);
965 xlate_xport_remove(new_xcfg
, xport
);
968 /* Given a datapath and flow metadata ('backer', and 'flow' respectively)
969 * returns the corresponding struct xport, or NULL if none is found. */
970 static struct xport
*
971 xlate_lookup_xport(const struct dpif_backer
*backer
, const struct flow
*flow
)
973 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
975 return xport_lookup(xcfg
, tnl_port_should_receive(flow
)
976 ? tnl_port_receive(flow
)
977 : odp_port_to_ofport(backer
, flow
->in_port
.odp_port
));
980 static struct ofproto_dpif
*
981 xlate_lookup_ofproto_(const struct dpif_backer
*backer
, const struct flow
*flow
,
982 ofp_port_t
*ofp_in_port
, const struct xport
**xportp
)
984 const struct xport
*xport
;
986 *xportp
= xport
= xlate_lookup_xport(backer
, flow
);
990 *ofp_in_port
= xport
->ofp_port
;
992 return xport
->xbridge
->ofproto
;
998 /* Given a datapath and flow metadata ('backer', and 'flow' respectively)
999 * returns the corresponding struct ofproto_dpif and OpenFlow port number. */
1000 struct ofproto_dpif
*
1001 xlate_lookup_ofproto(const struct dpif_backer
*backer
, const struct flow
*flow
,
1002 ofp_port_t
*ofp_in_port
)
1004 const struct xport
*xport
;
1006 return xlate_lookup_ofproto_(backer
, flow
, ofp_in_port
, &xport
);
1009 /* Given a datapath and flow metadata ('backer', and 'flow' respectively),
1010 * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the
1011 * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate
1012 * handles for those protocols if they're enabled. Caller may use the returned
1013 * pointers until quiescing, for longer term use additional references must
1016 * '*ofp_in_port' is set to OFPP_NONE if 'flow''s in_port does not exist.
1018 * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport.
1021 xlate_lookup(const struct dpif_backer
*backer
, const struct flow
*flow
,
1022 struct ofproto_dpif
**ofprotop
, struct dpif_ipfix
**ipfix
,
1023 struct dpif_sflow
**sflow
, struct netflow
**netflow
,
1024 ofp_port_t
*ofp_in_port
)
1026 struct ofproto_dpif
*ofproto
;
1027 const struct xport
*xport
;
1029 ofproto
= xlate_lookup_ofproto_(backer
, flow
, ofp_in_port
, &xport
);
1031 if (ofp_in_port
&& !xport
) {
1032 *ofp_in_port
= OFPP_NONE
;
1040 *ofprotop
= ofproto
;
1044 *ipfix
= xport
->xbridge
->ipfix
;
1048 *sflow
= xport
->xbridge
->sflow
;
1052 *netflow
= xport
->xbridge
->netflow
;
1057 static struct xbridge
*
1058 xbridge_lookup(struct xlate_cfg
*xcfg
, const struct ofproto_dpif
*ofproto
)
1060 struct hmap
*xbridges
;
1061 struct xbridge
*xbridge
;
1063 if (!ofproto
|| !xcfg
) {
1067 xbridges
= &xcfg
->xbridges
;
1069 HMAP_FOR_EACH_IN_BUCKET (xbridge
, hmap_node
, hash_pointer(ofproto
, 0),
1071 if (xbridge
->ofproto
== ofproto
) {
1078 static struct xbundle
*
1079 xbundle_lookup(struct xlate_cfg
*xcfg
, const struct ofbundle
*ofbundle
)
1081 struct hmap
*xbundles
;
1082 struct xbundle
*xbundle
;
1084 if (!ofbundle
|| !xcfg
) {
1088 xbundles
= &xcfg
->xbundles
;
1090 HMAP_FOR_EACH_IN_BUCKET (xbundle
, hmap_node
, hash_pointer(ofbundle
, 0),
1092 if (xbundle
->ofbundle
== ofbundle
) {
1099 static struct xport
*
1100 xport_lookup(struct xlate_cfg
*xcfg
, const struct ofport_dpif
*ofport
)
1102 struct hmap
*xports
;
1103 struct xport
*xport
;
1105 if (!ofport
|| !xcfg
) {
1109 xports
= &xcfg
->xports
;
1111 HMAP_FOR_EACH_IN_BUCKET (xport
, hmap_node
, hash_pointer(ofport
, 0),
1113 if (xport
->ofport
== ofport
) {
1120 static struct stp_port
*
1121 xport_get_stp_port(const struct xport
*xport
)
1123 return xport
->xbridge
->stp
&& xport
->stp_port_no
!= -1
1124 ? stp_get_port(xport
->xbridge
->stp
, xport
->stp_port_no
)
1129 xport_stp_learn_state(const struct xport
*xport
)
1131 struct stp_port
*sp
= xport_get_stp_port(xport
);
1133 ? stp_learn_in_state(stp_port_get_state(sp
))
1138 xport_stp_forward_state(const struct xport
*xport
)
1140 struct stp_port
*sp
= xport_get_stp_port(xport
);
1142 ? stp_forward_in_state(stp_port_get_state(sp
))
1147 xport_stp_should_forward_bpdu(const struct xport
*xport
)
1149 struct stp_port
*sp
= xport_get_stp_port(xport
);
1150 return stp_should_forward_bpdu(sp
? stp_port_get_state(sp
) : STP_DISABLED
);
1153 /* Returns true if STP should process 'flow'. Sets fields in 'wc' that
1154 * were used to make the determination.*/
1156 stp_should_process_flow(const struct flow
*flow
, struct flow_wildcards
*wc
)
1158 /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */
1159 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
1160 return is_stp(flow
);
1164 stp_process_packet(const struct xport
*xport
, const struct ofpbuf
*packet
)
1166 struct stp_port
*sp
= xport_get_stp_port(xport
);
1167 struct ofpbuf payload
= *packet
;
1168 struct eth_header
*eth
= ofpbuf_data(&payload
);
1170 /* Sink packets on ports that have STP disabled when the bridge has
1172 if (!sp
|| stp_port_get_state(sp
) == STP_DISABLED
) {
1176 /* Trim off padding on payload. */
1177 if (ofpbuf_size(&payload
) > ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
1178 ofpbuf_set_size(&payload
, ntohs(eth
->eth_type
) + ETH_HEADER_LEN
);
1181 if (ofpbuf_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
1182 stp_received_bpdu(sp
, ofpbuf_data(&payload
), ofpbuf_size(&payload
));
1186 static enum rstp_state
1187 xport_get_rstp_port_state(const struct xport
*xport
)
1189 return xport
->rstp_port
1190 ? rstp_port_get_state(xport
->rstp_port
)
1195 xport_rstp_learn_state(const struct xport
*xport
)
1197 return xport
->xbridge
->rstp
&& xport
->rstp_port
1198 ? rstp_learn_in_state(xport_get_rstp_port_state(xport
))
1203 xport_rstp_forward_state(const struct xport
*xport
)
1205 return xport
->xbridge
->rstp
&& xport
->rstp_port
1206 ? rstp_forward_in_state(xport_get_rstp_port_state(xport
))
1211 xport_rstp_should_manage_bpdu(const struct xport
*xport
)
1213 return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport
));
1217 rstp_process_packet(const struct xport
*xport
, const struct ofpbuf
*packet
)
1219 struct ofpbuf payload
= *packet
;
1220 struct eth_header
*eth
= ofpbuf_data(&payload
);
1222 /* Sink packets on ports that have no RSTP. */
1223 if (!xport
->rstp_port
) {
1227 /* Trim off padding on payload. */
1228 if (ofpbuf_size(&payload
) > ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
1229 ofpbuf_set_size(&payload
, ntohs(eth
->eth_type
) + ETH_HEADER_LEN
);
1232 if (ofpbuf_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
1233 rstp_port_received_bpdu(xport
->rstp_port
, ofpbuf_data(&payload
),
1234 ofpbuf_size(&payload
));
1238 static struct xport
*
1239 get_ofp_port(const struct xbridge
*xbridge
, ofp_port_t ofp_port
)
1241 struct xport
*xport
;
1243 HMAP_FOR_EACH_IN_BUCKET (xport
, ofp_node
, hash_ofp_port(ofp_port
),
1245 if (xport
->ofp_port
== ofp_port
) {
1253 ofp_port_to_odp_port(const struct xbridge
*xbridge
, ofp_port_t ofp_port
)
1255 const struct xport
*xport
= get_ofp_port(xbridge
, ofp_port
);
1256 return xport
? xport
->odp_port
: ODPP_NONE
;
1260 odp_port_is_alive(const struct xlate_ctx
*ctx
, ofp_port_t ofp_port
)
1262 struct xport
*xport
= get_ofp_port(ctx
->xbridge
, ofp_port
);
1263 return xport
&& xport
->may_enable
;
1266 static struct ofputil_bucket
*
1267 group_first_live_bucket(const struct xlate_ctx
*, const struct group_dpif
*,
1271 group_is_alive(const struct xlate_ctx
*ctx
, uint32_t group_id
, int depth
)
1273 struct group_dpif
*group
;
1275 if (group_dpif_lookup(ctx
->xbridge
->ofproto
, group_id
, &group
)) {
1276 struct ofputil_bucket
*bucket
;
1278 bucket
= group_first_live_bucket(ctx
, group
, depth
);
1279 group_dpif_unref(group
);
1280 return bucket
== NULL
;
1286 #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */
1289 bucket_is_alive(const struct xlate_ctx
*ctx
,
1290 struct ofputil_bucket
*bucket
, int depth
)
1292 if (depth
>= MAX_LIVENESS_RECURSION
) {
1293 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
1295 VLOG_WARN_RL(&rl
, "bucket chaining exceeded %d links",
1296 MAX_LIVENESS_RECURSION
);
1300 return (!ofputil_bucket_has_liveness(bucket
)
1301 || (bucket
->watch_port
!= OFPP_ANY
1302 && odp_port_is_alive(ctx
, bucket
->watch_port
))
1303 || (bucket
->watch_group
!= OFPG_ANY
1304 && group_is_alive(ctx
, bucket
->watch_group
, depth
+ 1)));
1307 static struct ofputil_bucket
*
1308 group_first_live_bucket(const struct xlate_ctx
*ctx
,
1309 const struct group_dpif
*group
, int depth
)
1311 struct ofputil_bucket
*bucket
;
1312 const struct list
*buckets
;
1314 group_dpif_get_buckets(group
, &buckets
);
1315 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
1316 if (bucket_is_alive(ctx
, bucket
, depth
)) {
1324 static struct ofputil_bucket
*
1325 group_best_live_bucket(const struct xlate_ctx
*ctx
,
1326 const struct group_dpif
*group
,
1329 struct ofputil_bucket
*best_bucket
= NULL
;
1330 uint32_t best_score
= 0;
1333 struct ofputil_bucket
*bucket
;
1334 const struct list
*buckets
;
1336 group_dpif_get_buckets(group
, &buckets
);
1337 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
1338 if (bucket_is_alive(ctx
, bucket
, 0)) {
1339 uint32_t score
= (hash_int(i
, basis
) & 0xffff) * bucket
->weight
;
1340 if (score
>= best_score
) {
1341 best_bucket
= bucket
;
1352 xbundle_trunks_vlan(const struct xbundle
*bundle
, uint16_t vlan
)
1354 return (bundle
->vlan_mode
!= PORT_VLAN_ACCESS
1355 && (!bundle
->trunks
|| bitmap_is_set(bundle
->trunks
, vlan
)));
1359 xbundle_includes_vlan(const struct xbundle
*xbundle
, uint16_t vlan
)
1361 return vlan
== xbundle
->vlan
|| xbundle_trunks_vlan(xbundle
, vlan
);
1364 static mirror_mask_t
1365 xbundle_mirror_out(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1367 return xbundle
!= &ofpp_none_bundle
1368 ? mirror_bundle_out(xbridge
->mbridge
, xbundle
->ofbundle
)
1372 static mirror_mask_t
1373 xbundle_mirror_src(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1375 return xbundle
!= &ofpp_none_bundle
1376 ? mirror_bundle_src(xbridge
->mbridge
, xbundle
->ofbundle
)
1380 static mirror_mask_t
1381 xbundle_mirror_dst(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1383 return xbundle
!= &ofpp_none_bundle
1384 ? mirror_bundle_dst(xbridge
->mbridge
, xbundle
->ofbundle
)
1388 static struct xbundle
*
1389 lookup_input_bundle(const struct xbridge
*xbridge
, ofp_port_t in_port
,
1390 bool warn
, struct xport
**in_xportp
)
1392 struct xport
*xport
;
1394 /* Find the port and bundle for the received packet. */
1395 xport
= get_ofp_port(xbridge
, in_port
);
1399 if (xport
&& xport
->xbundle
) {
1400 return xport
->xbundle
;
1403 /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+),
1404 * which a controller may use as the ingress port for traffic that
1405 * it is sourcing. */
1406 if (in_port
== OFPP_CONTROLLER
|| in_port
== OFPP_NONE
) {
1407 return &ofpp_none_bundle
;
1410 /* Odd. A few possible reasons here:
1412 * - We deleted a port but there are still a few packets queued up
1415 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
1416 * we don't know about.
1418 * - The ofproto client didn't configure the port as part of a bundle.
1419 * This is particularly likely to happen if a packet was received on the
1420 * port after it was created, but before the client had a chance to
1421 * configure its bundle.
1424 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1426 VLOG_WARN_RL(&rl
, "bridge %s: received packet on unknown "
1427 "port %"PRIu16
, xbridge
->name
, in_port
);
1433 add_mirror_actions(struct xlate_ctx
*ctx
, const struct flow
*orig_flow
)
1435 const struct xbridge
*xbridge
= ctx
->xbridge
;
1436 mirror_mask_t mirrors
;
1437 struct xbundle
*in_xbundle
;
1441 mirrors
= ctx
->xout
->mirrors
;
1442 ctx
->xout
->mirrors
= 0;
1444 in_xbundle
= lookup_input_bundle(xbridge
, orig_flow
->in_port
.ofp_port
,
1445 ctx
->xin
->packet
!= NULL
, NULL
);
1449 mirrors
|= xbundle_mirror_src(xbridge
, in_xbundle
);
1451 /* Drop frames on bundles reserved for mirroring. */
1452 if (xbundle_mirror_out(xbridge
, in_xbundle
)) {
1453 if (ctx
->xin
->packet
!= NULL
) {
1454 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1455 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
1456 "%s, which is reserved exclusively for mirroring",
1457 ctx
->xbridge
->name
, in_xbundle
->name
);
1459 ofpbuf_clear(ctx
->xout
->odp_actions
);
1464 vid
= vlan_tci_to_vid(orig_flow
->vlan_tci
);
1465 if (!input_vid_is_valid(vid
, in_xbundle
, ctx
->xin
->packet
!= NULL
)) {
1468 vlan
= input_vid_to_vlan(in_xbundle
, vid
);
1474 /* Restore the original packet before adding the mirror actions. */
1475 ctx
->xin
->flow
= *orig_flow
;
1478 mirror_mask_t dup_mirrors
;
1479 struct ofbundle
*out
;
1480 unsigned long *vlans
;
1485 has_mirror
= mirror_get(xbridge
->mbridge
, raw_ctz(mirrors
),
1486 &vlans
, &dup_mirrors
, &out
, &out_vlan
);
1487 ovs_assert(has_mirror
);
1490 ctx
->xout
->wc
.masks
.vlan_tci
|= htons(VLAN_CFI
| VLAN_VID_MASK
);
1492 vlan_mirrored
= !vlans
|| bitmap_is_set(vlans
, vlan
);
1495 if (!vlan_mirrored
) {
1496 mirrors
= zero_rightmost_1bit(mirrors
);
1500 mirrors
&= ~dup_mirrors
;
1501 ctx
->xout
->mirrors
|= dup_mirrors
;
1503 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1504 struct xbundle
*out_xbundle
= xbundle_lookup(xcfg
, out
);
1506 output_normal(ctx
, out_xbundle
, vlan
);
1508 } else if (vlan
!= out_vlan
1509 && !eth_addr_is_reserved(orig_flow
->dl_dst
)) {
1510 struct xbundle
*xbundle
;
1512 LIST_FOR_EACH (xbundle
, list_node
, &xbridge
->xbundles
) {
1513 if (xbundle_includes_vlan(xbundle
, out_vlan
)
1514 && !xbundle_mirror_out(xbridge
, xbundle
)) {
1515 output_normal(ctx
, xbundle
, out_vlan
);
1522 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
1523 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle',
1524 * the bundle on which the packet was received, returns the VLAN to which the
1527 * Both 'vid' and the return value are in the range 0...4095. */
1529 input_vid_to_vlan(const struct xbundle
*in_xbundle
, uint16_t vid
)
1531 switch (in_xbundle
->vlan_mode
) {
1532 case PORT_VLAN_ACCESS
:
1533 return in_xbundle
->vlan
;
1536 case PORT_VLAN_TRUNK
:
1539 case PORT_VLAN_NATIVE_UNTAGGED
:
1540 case PORT_VLAN_NATIVE_TAGGED
:
1541 return vid
? vid
: in_xbundle
->vlan
;
1548 /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'.
1549 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
1552 * 'vid' should be the VID obtained from the 802.1Q header that was received as
1553 * part of a packet (specify 0 if there was no 802.1Q header), in the range
1556 input_vid_is_valid(uint16_t vid
, struct xbundle
*in_xbundle
, bool warn
)
1558 /* Allow any VID on the OFPP_NONE port. */
1559 if (in_xbundle
== &ofpp_none_bundle
) {
1563 switch (in_xbundle
->vlan_mode
) {
1564 case PORT_VLAN_ACCESS
:
1567 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1568 VLOG_WARN_RL(&rl
, "dropping VLAN %"PRIu16
" tagged "
1569 "packet received on port %s configured as VLAN "
1570 "%"PRIu16
" access port", vid
, in_xbundle
->name
,
1577 case PORT_VLAN_NATIVE_UNTAGGED
:
1578 case PORT_VLAN_NATIVE_TAGGED
:
1580 /* Port must always carry its native VLAN. */
1584 case PORT_VLAN_TRUNK
:
1585 if (!xbundle_includes_vlan(in_xbundle
, vid
)) {
1587 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1588 VLOG_WARN_RL(&rl
, "dropping VLAN %"PRIu16
" packet "
1589 "received on port %s not configured for trunking "
1590 "VLAN %"PRIu16
, vid
, in_xbundle
->name
, vid
);
1602 /* Given 'vlan', the VLAN that a packet belongs to, and
1603 * 'out_xbundle', a bundle on which the packet is to be output, returns the VID
1604 * that should be included in the 802.1Q header. (If the return value is 0,
1605 * then the 802.1Q header should only be included in the packet if there is a
1608 * Both 'vlan' and the return value are in the range 0...4095. */
1610 output_vlan_to_vid(const struct xbundle
*out_xbundle
, uint16_t vlan
)
1612 switch (out_xbundle
->vlan_mode
) {
1613 case PORT_VLAN_ACCESS
:
1616 case PORT_VLAN_TRUNK
:
1617 case PORT_VLAN_NATIVE_TAGGED
:
1620 case PORT_VLAN_NATIVE_UNTAGGED
:
1621 return vlan
== out_xbundle
->vlan
? 0 : vlan
;
1629 output_normal(struct xlate_ctx
*ctx
, const struct xbundle
*out_xbundle
,
1632 ovs_be16
*flow_tci
= &ctx
->xin
->flow
.vlan_tci
;
1634 ovs_be16 tci
, old_tci
;
1635 struct xport
*xport
;
1637 vid
= output_vlan_to_vid(out_xbundle
, vlan
);
1638 if (list_is_empty(&out_xbundle
->xports
)) {
1639 /* Partially configured bundle with no slaves. Drop the packet. */
1641 } else if (!out_xbundle
->bond
) {
1642 ctx
->use_recirc
= false;
1643 xport
= CONTAINER_OF(list_front(&out_xbundle
->xports
), struct xport
,
1646 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1647 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
1648 struct xlate_recirc
*xr
= &ctx
->recirc
;
1649 struct ofport_dpif
*ofport
;
1651 if (ctx
->xbridge
->enable_recirc
) {
1652 ctx
->use_recirc
= bond_may_recirc(
1653 out_xbundle
->bond
, &xr
->recirc_id
, &xr
->hash_basis
);
1655 if (ctx
->use_recirc
) {
1656 /* Only TCP mode uses recirculation. */
1657 xr
->hash_alg
= OVS_HASH_ALG_L4
;
1658 bond_update_post_recirc_rules(out_xbundle
->bond
, false);
1660 /* Recirculation does not require unmasking hash fields. */
1665 ofport
= bond_choose_output_slave(out_xbundle
->bond
,
1666 &ctx
->xin
->flow
, wc
, vid
);
1667 xport
= xport_lookup(xcfg
, ofport
);
1670 /* No slaves enabled, so drop packet. */
1674 /* If ctx->xout->use_recirc is set, the main thread will handle stats
1675 * accounting for this bond. */
1676 if (!ctx
->use_recirc
) {
1677 if (ctx
->xin
->resubmit_stats
) {
1678 bond_account(out_xbundle
->bond
, &ctx
->xin
->flow
, vid
,
1679 ctx
->xin
->resubmit_stats
->n_bytes
);
1681 if (ctx
->xin
->xcache
) {
1682 struct xc_entry
*entry
;
1685 flow
= &ctx
->xin
->flow
;
1686 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_BOND
);
1687 entry
->u
.bond
.bond
= bond_ref(out_xbundle
->bond
);
1688 entry
->u
.bond
.flow
= xmemdup(flow
, sizeof *flow
);
1689 entry
->u
.bond
.vid
= vid
;
1694 old_tci
= *flow_tci
;
1696 if (tci
|| out_xbundle
->use_priority_tags
) {
1697 tci
|= *flow_tci
& htons(VLAN_PCP_MASK
);
1699 tci
|= htons(VLAN_CFI
);
1704 compose_output_action(ctx
, xport
->ofp_port
);
1705 *flow_tci
= old_tci
;
1708 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
1709 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
1710 * indicate this; newer upstream kernels use gratuitous ARP requests. */
1712 is_gratuitous_arp(const struct flow
*flow
, struct flow_wildcards
*wc
)
1714 if (flow
->dl_type
!= htons(ETH_TYPE_ARP
)) {
1718 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
1719 if (!eth_addr_is_broadcast(flow
->dl_dst
)) {
1723 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
1724 if (flow
->nw_proto
== ARP_OP_REPLY
) {
1726 } else if (flow
->nw_proto
== ARP_OP_REQUEST
) {
1727 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
1728 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
1730 return flow
->nw_src
== flow
->nw_dst
;
1736 /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or
1737 * dropped. Returns true if they may be forwarded, false if they should be
1740 * 'in_port' must be the xport that corresponds to flow->in_port.
1741 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
1743 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
1744 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
1745 * checked by input_vid_is_valid().
1747 * May also add tags to '*tags', although the current implementation only does
1748 * so in one special case.
1751 is_admissible(struct xlate_ctx
*ctx
, struct xport
*in_port
,
1754 struct xbundle
*in_xbundle
= in_port
->xbundle
;
1755 const struct xbridge
*xbridge
= ctx
->xbridge
;
1756 struct flow
*flow
= &ctx
->xin
->flow
;
1758 /* Drop frames for reserved multicast addresses
1759 * only if forward_bpdu option is absent. */
1760 if (!xbridge
->forward_bpdu
&& eth_addr_is_reserved(flow
->dl_dst
)) {
1761 xlate_report(ctx
, "packet has reserved destination MAC, dropping");
1765 if (in_xbundle
->bond
) {
1766 struct mac_entry
*mac
;
1768 switch (bond_check_admissibility(in_xbundle
->bond
, in_port
->ofport
,
1774 xlate_report(ctx
, "bonding refused admissibility, dropping");
1777 case BV_DROP_IF_MOVED
:
1778 ovs_rwlock_rdlock(&xbridge
->ml
->rwlock
);
1779 mac
= mac_learning_lookup(xbridge
->ml
, flow
->dl_src
, vlan
);
1780 if (mac
&& mac
->port
.p
!= in_xbundle
->ofbundle
&&
1781 (!is_gratuitous_arp(flow
, &ctx
->xout
->wc
)
1782 || mac_entry_is_grat_arp_locked(mac
))) {
1783 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1784 xlate_report(ctx
, "SLB bond thinks this packet looped back, "
1788 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1796 /* Checks whether a MAC learning update is necessary for MAC learning table
1797 * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in
1800 * Most packets processed through the MAC learning table do not actually
1801 * change it in any way. This function requires only a read lock on the MAC
1802 * learning table, so it is much cheaper in this common case.
1804 * Keep the code here synchronized with that in update_learning_table__()
1807 is_mac_learning_update_needed(const struct mac_learning
*ml
,
1808 const struct flow
*flow
,
1809 struct flow_wildcards
*wc
,
1810 int vlan
, struct xbundle
*in_xbundle
)
1811 OVS_REQ_RDLOCK(ml
->rwlock
)
1813 struct mac_entry
*mac
;
1815 if (!mac_learning_may_learn(ml
, flow
->dl_src
, vlan
)) {
1819 mac
= mac_learning_lookup(ml
, flow
->dl_src
, vlan
);
1820 if (!mac
|| mac_entry_age(ml
, mac
)) {
1824 if (is_gratuitous_arp(flow
, wc
)) {
1825 /* We don't want to learn from gratuitous ARP packets that are
1826 * reflected back over bond slaves so we lock the learning table. */
1827 if (!in_xbundle
->bond
) {
1829 } else if (mac_entry_is_grat_arp_locked(mac
)) {
1834 return mac
->port
.p
!= in_xbundle
->ofbundle
;
1838 /* Updates MAC learning table 'ml' given that a packet matching 'flow' was
1839 * received on 'in_xbundle' in 'vlan'.
1841 * This code repeats all the checks in is_mac_learning_update_needed() because
1842 * the lock was released between there and here and thus the MAC learning state
1843 * could have changed.
1845 * Keep the code here synchronized with that in is_mac_learning_update_needed()
1848 update_learning_table__(const struct xbridge
*xbridge
,
1849 const struct flow
*flow
, struct flow_wildcards
*wc
,
1850 int vlan
, struct xbundle
*in_xbundle
)
1851 OVS_REQ_WRLOCK(xbridge
->ml
->rwlock
)
1853 struct mac_entry
*mac
;
1855 if (!mac_learning_may_learn(xbridge
->ml
, flow
->dl_src
, vlan
)) {
1859 mac
= mac_learning_insert(xbridge
->ml
, flow
->dl_src
, vlan
);
1860 if (is_gratuitous_arp(flow
, wc
)) {
1861 /* We don't want to learn from gratuitous ARP packets that are
1862 * reflected back over bond slaves so we lock the learning table. */
1863 if (!in_xbundle
->bond
) {
1864 mac_entry_set_grat_arp_lock(mac
);
1865 } else if (mac_entry_is_grat_arp_locked(mac
)) {
1870 if (mac
->port
.p
!= in_xbundle
->ofbundle
) {
1871 /* The log messages here could actually be useful in debugging,
1872 * so keep the rate limit relatively high. */
1873 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
1875 VLOG_DBG_RL(&rl
, "bridge %s: learned that "ETH_ADDR_FMT
" is "
1876 "on port %s in VLAN %d",
1877 xbridge
->name
, ETH_ADDR_ARGS(flow
->dl_src
),
1878 in_xbundle
->name
, vlan
);
1880 mac
->port
.p
= in_xbundle
->ofbundle
;
1881 mac_learning_changed(xbridge
->ml
);
1886 update_learning_table(const struct xbridge
*xbridge
,
1887 const struct flow
*flow
, struct flow_wildcards
*wc
,
1888 int vlan
, struct xbundle
*in_xbundle
)
1892 /* Don't learn the OFPP_NONE port. */
1893 if (in_xbundle
== &ofpp_none_bundle
) {
1897 /* First try the common case: no change to MAC learning table. */
1898 ovs_rwlock_rdlock(&xbridge
->ml
->rwlock
);
1899 need_update
= is_mac_learning_update_needed(xbridge
->ml
, flow
, wc
, vlan
,
1901 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1904 /* Slow path: MAC learning table might need an update. */
1905 ovs_rwlock_wrlock(&xbridge
->ml
->rwlock
);
1906 update_learning_table__(xbridge
, flow
, wc
, vlan
, in_xbundle
);
1907 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1911 /* Updates multicast snooping table 'ms' given that a packet matching 'flow'
1912 * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */
1914 update_mcast_snooping_table__(const struct xbridge
*xbridge
,
1915 const struct flow
*flow
,
1916 struct mcast_snooping
*ms
,
1917 ovs_be32 ip4
, int vlan
,
1918 struct xbundle
*in_xbundle
)
1919 OVS_REQ_WRLOCK(ms
->rwlock
)
1921 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(60, 30);
1923 switch (ntohs(flow
->tp_src
)) {
1924 case IGMP_HOST_MEMBERSHIP_REPORT
:
1925 case IGMPV2_HOST_MEMBERSHIP_REPORT
:
1926 if (mcast_snooping_add_group(ms
, ip4
, vlan
, in_xbundle
->ofbundle
)) {
1927 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping learned that "
1928 IP_FMT
" is on port %s in VLAN %d",
1929 xbridge
->name
, IP_ARGS(ip4
), in_xbundle
->name
, vlan
);
1932 case IGMP_HOST_LEAVE_MESSAGE
:
1933 if (mcast_snooping_leave_group(ms
, ip4
, vlan
, in_xbundle
->ofbundle
)) {
1934 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping leaving "
1935 IP_FMT
" is on port %s in VLAN %d",
1936 xbridge
->name
, IP_ARGS(ip4
), in_xbundle
->name
, vlan
);
1939 case IGMP_HOST_MEMBERSHIP_QUERY
:
1940 if (flow
->nw_src
&& mcast_snooping_add_mrouter(ms
, vlan
,
1941 in_xbundle
->ofbundle
)) {
1942 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping query from "
1943 IP_FMT
" is on port %s in VLAN %d",
1944 xbridge
->name
, IP_ARGS(flow
->nw_src
),
1945 in_xbundle
->name
, vlan
);
1951 /* Updates multicast snooping table 'ms' given that a packet matching 'flow'
1952 * was received on 'in_xbundle' in 'vlan'. */
1954 update_mcast_snooping_table(const struct xbridge
*xbridge
,
1955 const struct flow
*flow
, int vlan
,
1956 struct xbundle
*in_xbundle
)
1958 struct mcast_snooping
*ms
= xbridge
->ms
;
1959 struct xlate_cfg
*xcfg
;
1960 struct xbundle
*mcast_xbundle
;
1961 struct mcast_fport_bundle
*fport
;
1963 /* Don't learn the OFPP_NONE port. */
1964 if (in_xbundle
== &ofpp_none_bundle
) {
1968 /* Don't learn from flood ports */
1969 mcast_xbundle
= NULL
;
1970 ovs_rwlock_wrlock(&ms
->rwlock
);
1971 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1972 LIST_FOR_EACH(fport
, fport_node
, &ms
->fport_list
) {
1973 mcast_xbundle
= xbundle_lookup(xcfg
, fport
->port
);
1974 if (mcast_xbundle
== in_xbundle
) {
1979 if (!mcast_xbundle
|| mcast_xbundle
!= in_xbundle
) {
1980 update_mcast_snooping_table__(xbridge
, flow
, ms
, flow
->igmp_group_ip4
,
1983 ovs_rwlock_unlock(&ms
->rwlock
);
1986 /* send the packet to ports having the multicast group learned */
1988 xlate_normal_mcast_send_group(struct xlate_ctx
*ctx
,
1989 struct mcast_snooping
*ms OVS_UNUSED
,
1990 struct mcast_group
*grp
,
1991 struct xbundle
*in_xbundle
, uint16_t vlan
)
1992 OVS_REQ_RDLOCK(ms
->rwlock
)
1994 struct xlate_cfg
*xcfg
;
1995 struct mcast_group_bundle
*b
;
1996 struct xbundle
*mcast_xbundle
;
1998 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1999 LIST_FOR_EACH(b
, bundle_node
, &grp
->bundle_lru
) {
2000 mcast_xbundle
= xbundle_lookup(xcfg
, b
->port
);
2001 if (mcast_xbundle
&& mcast_xbundle
!= in_xbundle
) {
2002 xlate_report(ctx
, "forwarding to mcast group port");
2003 output_normal(ctx
, mcast_xbundle
, vlan
);
2004 } else if (!mcast_xbundle
) {
2005 xlate_report(ctx
, "mcast group port is unknown, dropping");
2007 xlate_report(ctx
, "mcast group port is input port, dropping");
2012 /* send the packet to ports connected to multicast routers */
2014 xlate_normal_mcast_send_mrouters(struct xlate_ctx
*ctx
,
2015 struct mcast_snooping
*ms
,
2016 struct xbundle
*in_xbundle
, uint16_t vlan
)
2017 OVS_REQ_RDLOCK(ms
->rwlock
)
2019 struct xlate_cfg
*xcfg
;
2020 struct mcast_mrouter_bundle
*mrouter
;
2021 struct xbundle
*mcast_xbundle
;
2023 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2024 LIST_FOR_EACH(mrouter
, mrouter_node
, &ms
->mrouter_lru
) {
2025 mcast_xbundle
= xbundle_lookup(xcfg
, mrouter
->port
);
2026 if (mcast_xbundle
&& mcast_xbundle
!= in_xbundle
) {
2027 xlate_report(ctx
, "forwarding to mcast router port");
2028 output_normal(ctx
, mcast_xbundle
, vlan
);
2029 } else if (!mcast_xbundle
) {
2030 xlate_report(ctx
, "mcast router port is unknown, dropping");
2032 xlate_report(ctx
, "mcast router port is input port, dropping");
2037 /* send the packet to ports flagged to be flooded */
2039 xlate_normal_mcast_send_fports(struct xlate_ctx
*ctx
,
2040 struct mcast_snooping
*ms
,
2041 struct xbundle
*in_xbundle
, uint16_t vlan
)
2042 OVS_REQ_RDLOCK(ms
->rwlock
)
2044 struct xlate_cfg
*xcfg
;
2045 struct mcast_fport_bundle
*fport
;
2046 struct xbundle
*mcast_xbundle
;
2048 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2049 LIST_FOR_EACH(fport
, fport_node
, &ms
->fport_list
) {
2050 mcast_xbundle
= xbundle_lookup(xcfg
, fport
->port
);
2051 if (mcast_xbundle
&& mcast_xbundle
!= in_xbundle
) {
2052 xlate_report(ctx
, "forwarding to mcast flood port");
2053 output_normal(ctx
, mcast_xbundle
, vlan
);
2054 } else if (!mcast_xbundle
) {
2055 xlate_report(ctx
, "mcast flood port is unknown, dropping");
2057 xlate_report(ctx
, "mcast flood port is input port, dropping");
2063 xlate_normal_flood(struct xlate_ctx
*ctx
, struct xbundle
*in_xbundle
,
2066 struct xbundle
*xbundle
;
2068 LIST_FOR_EACH (xbundle
, list_node
, &ctx
->xbridge
->xbundles
) {
2069 if (xbundle
!= in_xbundle
2070 && xbundle_includes_vlan(xbundle
, vlan
)
2071 && xbundle
->floodable
2072 && !xbundle_mirror_out(ctx
->xbridge
, xbundle
)) {
2073 output_normal(ctx
, xbundle
, vlan
);
2076 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
2080 xlate_normal(struct xlate_ctx
*ctx
)
2082 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2083 struct flow
*flow
= &ctx
->xin
->flow
;
2084 struct xbundle
*in_xbundle
;
2085 struct xport
*in_port
;
2086 struct mac_entry
*mac
;
2091 ctx
->xout
->has_normal
= true;
2093 memset(&wc
->masks
.dl_src
, 0xff, sizeof wc
->masks
.dl_src
);
2094 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
2095 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
2097 in_xbundle
= lookup_input_bundle(ctx
->xbridge
, flow
->in_port
.ofp_port
,
2098 ctx
->xin
->packet
!= NULL
, &in_port
);
2100 xlate_report(ctx
, "no input bundle, dropping");
2104 /* Drop malformed frames. */
2105 if (flow
->dl_type
== htons(ETH_TYPE_VLAN
) &&
2106 !(flow
->vlan_tci
& htons(VLAN_CFI
))) {
2107 if (ctx
->xin
->packet
!= NULL
) {
2108 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2109 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet with partial "
2110 "VLAN tag received on port %s",
2111 ctx
->xbridge
->name
, in_xbundle
->name
);
2113 xlate_report(ctx
, "partial VLAN tag, dropping");
2117 /* Drop frames on bundles reserved for mirroring. */
2118 if (xbundle_mirror_out(ctx
->xbridge
, in_xbundle
)) {
2119 if (ctx
->xin
->packet
!= NULL
) {
2120 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2121 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
2122 "%s, which is reserved exclusively for mirroring",
2123 ctx
->xbridge
->name
, in_xbundle
->name
);
2125 xlate_report(ctx
, "input port is mirror output port, dropping");
2130 vid
= vlan_tci_to_vid(flow
->vlan_tci
);
2131 if (!input_vid_is_valid(vid
, in_xbundle
, ctx
->xin
->packet
!= NULL
)) {
2132 xlate_report(ctx
, "disallowed VLAN VID for this input port, dropping");
2135 vlan
= input_vid_to_vlan(in_xbundle
, vid
);
2137 /* Check other admissibility requirements. */
2138 if (in_port
&& !is_admissible(ctx
, in_port
, vlan
)) {
2142 /* Learn source MAC. */
2143 if (ctx
->xin
->may_learn
) {
2144 update_learning_table(ctx
->xbridge
, flow
, wc
, vlan
, in_xbundle
);
2146 if (ctx
->xin
->xcache
) {
2147 struct xc_entry
*entry
;
2149 /* Save enough info to update mac learning table later. */
2150 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NORMAL
);
2151 entry
->u
.normal
.ofproto
= ctx
->xbridge
->ofproto
;
2152 entry
->u
.normal
.flow
= xmemdup(flow
, sizeof *flow
);
2153 entry
->u
.normal
.vlan
= vlan
;
2156 /* Determine output bundle. */
2157 if (mcast_snooping_enabled(ctx
->xbridge
->ms
)
2158 && !eth_addr_is_broadcast(flow
->dl_dst
)
2159 && eth_addr_is_multicast(flow
->dl_dst
)
2160 && flow
->dl_type
== htons(ETH_TYPE_IP
)) {
2161 struct mcast_snooping
*ms
= ctx
->xbridge
->ms
;
2162 struct mcast_group
*grp
;
2164 if (flow
->nw_proto
== IPPROTO_IGMP
) {
2165 if (ctx
->xin
->may_learn
) {
2166 if (mcast_snooping_is_membership(flow
->tp_src
) ||
2167 mcast_snooping_is_query(flow
->tp_src
)) {
2168 update_mcast_snooping_table(ctx
->xbridge
, flow
, vlan
,
2173 if (mcast_snooping_is_membership(flow
->tp_src
)) {
2174 ovs_rwlock_rdlock(&ms
->rwlock
);
2175 xlate_normal_mcast_send_mrouters(ctx
, ms
, in_xbundle
, vlan
);
2176 ovs_rwlock_unlock(&ms
->rwlock
);
2178 xlate_report(ctx
, "multicast traffic, flooding");
2179 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2183 if (ip_is_local_multicast(flow
->nw_dst
)) {
2184 /* RFC4541: section 2.1.2, item 2: Packets with a dst IP
2185 * address in the 224.0.0.x range which are not IGMP must
2186 * be forwarded on all ports */
2187 xlate_report(ctx
, "RFC4541: section 2.1.2, item 2, flooding");
2188 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2193 /* forwarding to group base ports */
2194 ovs_rwlock_rdlock(&ms
->rwlock
);
2195 grp
= mcast_snooping_lookup(ms
, flow
->nw_dst
, vlan
);
2197 xlate_normal_mcast_send_group(ctx
, ms
, grp
, in_xbundle
, vlan
);
2198 xlate_normal_mcast_send_fports(ctx
, ms
, in_xbundle
, vlan
);
2199 xlate_normal_mcast_send_mrouters(ctx
, ms
, in_xbundle
, vlan
);
2201 if (mcast_snooping_flood_unreg(ms
)) {
2202 xlate_report(ctx
, "unregistered multicast, flooding");
2203 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2205 xlate_normal_mcast_send_mrouters(ctx
, ms
, in_xbundle
, vlan
);
2206 xlate_normal_mcast_send_fports(ctx
, ms
, in_xbundle
, vlan
);
2209 ovs_rwlock_unlock(&ms
->rwlock
);
2211 ovs_rwlock_rdlock(&ctx
->xbridge
->ml
->rwlock
);
2212 mac
= mac_learning_lookup(ctx
->xbridge
->ml
, flow
->dl_dst
, vlan
);
2213 mac_port
= mac
? mac
->port
.p
: NULL
;
2214 ovs_rwlock_unlock(&ctx
->xbridge
->ml
->rwlock
);
2217 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2218 struct xbundle
*mac_xbundle
= xbundle_lookup(xcfg
, mac_port
);
2219 if (mac_xbundle
&& mac_xbundle
!= in_xbundle
) {
2220 xlate_report(ctx
, "forwarding to learned port");
2221 output_normal(ctx
, mac_xbundle
, vlan
);
2222 } else if (!mac_xbundle
) {
2223 xlate_report(ctx
, "learned port is unknown, dropping");
2225 xlate_report(ctx
, "learned port is input port, dropping");
2228 xlate_report(ctx
, "no learned MAC for destination, flooding");
2229 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2234 /* Compose SAMPLE action for sFlow or IPFIX. The given probability is
2235 * the number of packets out of UINT32_MAX to sample. The given
2236 * cookie is passed back in the callback for each sampled packet.
2239 compose_sample_action(const struct xbridge
*xbridge
,
2240 struct ofpbuf
*odp_actions
,
2241 const struct flow
*flow
,
2242 const uint32_t probability
,
2243 const union user_action_cookie
*cookie
,
2244 const size_t cookie_size
,
2245 const odp_port_t tunnel_out_port
)
2247 size_t sample_offset
, actions_offset
;
2248 odp_port_t odp_port
;
2252 sample_offset
= nl_msg_start_nested(odp_actions
, OVS_ACTION_ATTR_SAMPLE
);
2254 nl_msg_put_u32(odp_actions
, OVS_SAMPLE_ATTR_PROBABILITY
, probability
);
2256 actions_offset
= nl_msg_start_nested(odp_actions
, OVS_SAMPLE_ATTR_ACTIONS
);
2258 odp_port
= ofp_port_to_odp_port(xbridge
, flow
->in_port
.ofp_port
);
2259 pid
= dpif_port_get_pid(xbridge
->dpif
, odp_port
,
2260 flow_hash_5tuple(flow
, 0));
2261 cookie_offset
= odp_put_userspace_action(pid
, cookie
, cookie_size
,
2262 tunnel_out_port
, odp_actions
);
2264 nl_msg_end_nested(odp_actions
, actions_offset
);
2265 nl_msg_end_nested(odp_actions
, sample_offset
);
2266 return cookie_offset
;
2270 compose_sflow_cookie(const struct xbridge
*xbridge
, ovs_be16 vlan_tci
,
2271 odp_port_t odp_port
, unsigned int n_outputs
,
2272 union user_action_cookie
*cookie
)
2276 cookie
->type
= USER_ACTION_COOKIE_SFLOW
;
2277 cookie
->sflow
.vlan_tci
= vlan_tci
;
2279 /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
2280 * port information") for the interpretation of cookie->output. */
2281 switch (n_outputs
) {
2283 /* 0x40000000 | 256 means "packet dropped for unknown reason". */
2284 cookie
->sflow
.output
= 0x40000000 | 256;
2288 ifindex
= dpif_sflow_odp_port_to_ifindex(xbridge
->sflow
, odp_port
);
2290 cookie
->sflow
.output
= ifindex
;
2295 /* 0x80000000 means "multiple output ports. */
2296 cookie
->sflow
.output
= 0x80000000 | n_outputs
;
2301 /* Compose SAMPLE action for sFlow bridge sampling. */
2303 compose_sflow_action(const struct xbridge
*xbridge
,
2304 struct ofpbuf
*odp_actions
,
2305 const struct flow
*flow
,
2306 odp_port_t odp_port
)
2308 uint32_t probability
;
2309 union user_action_cookie cookie
;
2311 if (!xbridge
->sflow
|| flow
->in_port
.ofp_port
== OFPP_NONE
) {
2315 probability
= dpif_sflow_get_probability(xbridge
->sflow
);
2316 compose_sflow_cookie(xbridge
, htons(0), odp_port
,
2317 odp_port
== ODPP_NONE
? 0 : 1, &cookie
);
2319 return compose_sample_action(xbridge
, odp_actions
, flow
, probability
,
2320 &cookie
, sizeof cookie
.sflow
, ODPP_NONE
);
2324 compose_flow_sample_cookie(uint16_t probability
, uint32_t collector_set_id
,
2325 uint32_t obs_domain_id
, uint32_t obs_point_id
,
2326 union user_action_cookie
*cookie
)
2328 cookie
->type
= USER_ACTION_COOKIE_FLOW_SAMPLE
;
2329 cookie
->flow_sample
.probability
= probability
;
2330 cookie
->flow_sample
.collector_set_id
= collector_set_id
;
2331 cookie
->flow_sample
.obs_domain_id
= obs_domain_id
;
2332 cookie
->flow_sample
.obs_point_id
= obs_point_id
;
2336 compose_ipfix_cookie(union user_action_cookie
*cookie
,
2337 odp_port_t output_odp_port
)
2339 cookie
->type
= USER_ACTION_COOKIE_IPFIX
;
2340 cookie
->ipfix
.output_odp_port
= output_odp_port
;
2343 /* Compose SAMPLE action for IPFIX bridge sampling. */
2345 compose_ipfix_action(const struct xbridge
*xbridge
,
2346 struct ofpbuf
*odp_actions
,
2347 const struct flow
*flow
,
2348 odp_port_t output_odp_port
)
2350 uint32_t probability
;
2351 union user_action_cookie cookie
;
2352 odp_port_t tunnel_out_port
= ODPP_NONE
;
2354 if (!xbridge
->ipfix
|| flow
->in_port
.ofp_port
== OFPP_NONE
) {
2358 /* For input case, output_odp_port is ODPP_NONE, which is an invalid port
2360 if (output_odp_port
== ODPP_NONE
&&
2361 !dpif_ipfix_get_bridge_exporter_input_sampling(xbridge
->ipfix
)) {
2365 /* For output case, output_odp_port is valid*/
2366 if (output_odp_port
!= ODPP_NONE
) {
2367 if (!dpif_ipfix_get_bridge_exporter_output_sampling(xbridge
->ipfix
)) {
2370 /* If tunnel sampling is enabled, put an additional option attribute:
2371 * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT
2373 if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(xbridge
->ipfix
) &&
2374 dpif_ipfix_get_tunnel_port(xbridge
->ipfix
, output_odp_port
) ) {
2375 tunnel_out_port
= output_odp_port
;
2379 probability
= dpif_ipfix_get_bridge_exporter_probability(xbridge
->ipfix
);
2380 compose_ipfix_cookie(&cookie
, output_odp_port
);
2382 compose_sample_action(xbridge
, odp_actions
, flow
, probability
,
2383 &cookie
, sizeof cookie
.ipfix
, tunnel_out_port
);
2386 /* SAMPLE action for sFlow must be first action in any given list of
2387 * actions. At this point we do not have all information required to
2388 * build it. So try to build sample action as complete as possible. */
2390 add_sflow_action(struct xlate_ctx
*ctx
)
2392 ctx
->user_cookie_offset
= compose_sflow_action(ctx
->xbridge
,
2393 ctx
->xout
->odp_actions
,
2394 &ctx
->xin
->flow
, ODPP_NONE
);
2395 ctx
->sflow_odp_port
= 0;
2396 ctx
->sflow_n_outputs
= 0;
2399 /* SAMPLE action for IPFIX must be 1st or 2nd action in any given list
2400 * of actions, eventually after the SAMPLE action for sFlow. */
2402 add_ipfix_action(struct xlate_ctx
*ctx
)
2404 compose_ipfix_action(ctx
->xbridge
, ctx
->xout
->odp_actions
,
2405 &ctx
->xin
->flow
, ODPP_NONE
);
2409 add_ipfix_output_action(struct xlate_ctx
*ctx
, odp_port_t port
)
2411 compose_ipfix_action(ctx
->xbridge
, ctx
->xout
->odp_actions
,
2412 &ctx
->xin
->flow
, port
);
2415 /* Fix SAMPLE action according to data collected while composing ODP actions.
2416 * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
2417 * USERSPACE action's user-cookie which is required for sflow. */
2419 fix_sflow_action(struct xlate_ctx
*ctx
)
2421 const struct flow
*base
= &ctx
->base_flow
;
2422 union user_action_cookie
*cookie
;
2424 if (!ctx
->user_cookie_offset
) {
2428 cookie
= ofpbuf_at(ctx
->xout
->odp_actions
, ctx
->user_cookie_offset
,
2429 sizeof cookie
->sflow
);
2430 ovs_assert(cookie
->type
== USER_ACTION_COOKIE_SFLOW
);
2432 compose_sflow_cookie(ctx
->xbridge
, base
->vlan_tci
,
2433 ctx
->sflow_odp_port
, ctx
->sflow_n_outputs
, cookie
);
2436 static enum slow_path_reason
2437 process_special(struct xlate_ctx
*ctx
, const struct flow
*flow
,
2438 const struct xport
*xport
, const struct ofpbuf
*packet
)
2440 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2441 const struct xbridge
*xbridge
= ctx
->xbridge
;
2445 } else if (xport
->cfm
&& cfm_should_process_flow(xport
->cfm
, flow
, wc
)) {
2447 cfm_process_heartbeat(xport
->cfm
, packet
);
2450 } else if (xport
->bfd
&& bfd_should_process_flow(xport
->bfd
, flow
, wc
)) {
2452 bfd_process_packet(xport
->bfd
, flow
, packet
);
2453 /* If POLL received, immediately sends FINAL back. */
2454 if (bfd_should_send_packet(xport
->bfd
)) {
2455 ofproto_dpif_monitor_port_send_soon(xport
->ofport
);
2459 } else if (xport
->xbundle
&& xport
->xbundle
->lacp
2460 && flow
->dl_type
== htons(ETH_TYPE_LACP
)) {
2462 lacp_process_packet(xport
->xbundle
->lacp
, xport
->ofport
, packet
);
2465 } else if ((xbridge
->stp
|| xbridge
->rstp
) &&
2466 stp_should_process_flow(flow
, wc
)) {
2469 ? stp_process_packet(xport
, packet
)
2470 : rstp_process_packet(xport
, packet
);
2479 tnl_route_lookup_flow(const struct flow
*oflow
,
2480 ovs_be32
*ip
, struct xport
**out_port
)
2482 char out_dev
[IFNAMSIZ
];
2483 struct xbridge
*xbridge
;
2484 struct xlate_cfg
*xcfg
;
2487 if (!ovs_router_lookup(oflow
->tunnel
.ip_dst
, out_dev
, &gw
)) {
2494 *ip
= oflow
->tunnel
.ip_dst
;
2497 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2500 HMAP_FOR_EACH (xbridge
, hmap_node
, &xcfg
->xbridges
) {
2501 if (!strncmp(xbridge
->name
, out_dev
, IFNAMSIZ
)) {
2504 HMAP_FOR_EACH (port
, ofp_node
, &xbridge
->xports
) {
2505 if (!strncmp(netdev_get_name(port
->netdev
), out_dev
, IFNAMSIZ
)) {
2516 xlate_flood_packet(struct xbridge
*xbridge
, struct ofpbuf
*packet
)
2518 struct ofpact_output output
;
2521 ofpact_init(&output
.ofpact
, OFPACT_OUTPUT
, sizeof output
);
2522 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
2523 flow_extract(packet
, NULL
, &flow
);
2524 flow
.in_port
.ofp_port
= OFPP_NONE
;
2525 output
.port
= OFPP_FLOOD
;
2528 return ofproto_dpif_execute_actions(xbridge
->ofproto
, &flow
, NULL
,
2529 &output
.ofpact
, sizeof output
,
2534 tnl_send_arp_request(const struct xport
*out_dev
, const uint8_t eth_src
[ETH_ADDR_LEN
],
2535 ovs_be32 ip_src
, ovs_be32 ip_dst
)
2537 struct xbridge
*xbridge
= out_dev
->xbridge
;
2538 struct ofpbuf packet
;
2540 ofpbuf_init(&packet
, 0);
2541 compose_arp(&packet
, eth_src
, ip_src
, ip_dst
);
2543 xlate_flood_packet(xbridge
, &packet
);
2544 ofpbuf_uninit(&packet
);
2548 build_tunnel_send(const struct xlate_ctx
*ctx
, const struct xport
*xport
,
2549 const struct flow
*flow
, odp_port_t tunnel_odp_port
)
2551 struct ovs_action_push_tnl tnl_push_data
;
2552 struct xport
*out_dev
= NULL
;
2553 ovs_be32 s_ip
, d_ip
= 0;
2554 uint8_t smac
[ETH_ADDR_LEN
];
2555 uint8_t dmac
[ETH_ADDR_LEN
];
2558 err
= tnl_route_lookup_flow(flow
, &d_ip
, &out_dev
);
2563 /* Use mac addr of bridge port of the peer. */
2564 err
= netdev_get_etheraddr(out_dev
->netdev
, smac
);
2569 err
= netdev_get_in4(out_dev
->netdev
, (struct in_addr
*) &s_ip
, NULL
);
2574 err
= tnl_arp_lookup(out_dev
->xbridge
->name
, d_ip
, dmac
);
2576 tnl_send_arp_request(out_dev
, smac
, s_ip
, d_ip
);
2579 if (ctx
->xin
->xcache
) {
2580 struct xc_entry
*entry
;
2582 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_TNL_ARP
);
2583 strncpy(entry
->u
.tnl_arp_cache
.br_name
, out_dev
->xbridge
->name
, IFNAMSIZ
);
2584 entry
->u
.tnl_arp_cache
.d_ip
= d_ip
;
2586 err
= tnl_port_build_header(xport
->ofport
, flow
,
2587 dmac
, smac
, s_ip
, &tnl_push_data
);
2591 tnl_push_data
.tnl_port
= odp_to_u32(tunnel_odp_port
);
2592 tnl_push_data
.out_port
= odp_to_u32(out_dev
->odp_port
);
2593 odp_put_tnl_push_action(ctx
->xout
->odp_actions
, &tnl_push_data
);
2598 compose_output_action__(struct xlate_ctx
*ctx
, ofp_port_t ofp_port
,
2601 const struct xport
*xport
= get_ofp_port(ctx
->xbridge
, ofp_port
);
2602 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2603 struct flow
*flow
= &ctx
->xin
->flow
;
2604 struct flow_tnl flow_tnl
;
2605 ovs_be16 flow_vlan_tci
;
2606 uint32_t flow_pkt_mark
;
2607 uint8_t flow_nw_tos
;
2608 odp_port_t out_port
, odp_port
;
2609 bool tnl_push_pop_send
= false;
2612 /* If 'struct flow' gets additional metadata, we'll need to zero it out
2613 * before traversing a patch port. */
2614 BUILD_ASSERT_DECL(FLOW_WC_SEQ
== 28);
2615 memset(&flow_tnl
, 0, sizeof flow_tnl
);
2618 xlate_report(ctx
, "Nonexistent output port");
2620 } else if (xport
->config
& OFPUTIL_PC_NO_FWD
) {
2621 xlate_report(ctx
, "OFPPC_NO_FWD set, skipping output");
2623 } else if (check_stp
) {
2624 if (is_stp(&ctx
->base_flow
)) {
2625 if (!xport_stp_should_forward_bpdu(xport
) &&
2626 !xport_rstp_should_manage_bpdu(xport
)) {
2627 if (ctx
->xbridge
->stp
!= NULL
) {
2628 xlate_report(ctx
, "STP not in listening state, "
2629 "skipping bpdu output");
2630 } else if (ctx
->xbridge
->rstp
!= NULL
) {
2631 xlate_report(ctx
, "RSTP not managing BPDU in this state, "
2632 "skipping bpdu output");
2636 } else if (!xport_stp_forward_state(xport
) ||
2637 !xport_rstp_forward_state(xport
)) {
2638 if (ctx
->xbridge
->stp
!= NULL
) {
2639 xlate_report(ctx
, "STP not in forwarding state, "
2641 } else if (ctx
->xbridge
->rstp
!= NULL
) {
2642 xlate_report(ctx
, "RSTP not in forwarding state, "
2649 if (mbridge_has_mirrors(ctx
->xbridge
->mbridge
) && xport
->xbundle
) {
2650 ctx
->xout
->mirrors
|= xbundle_mirror_dst(xport
->xbundle
->xbridge
,
2655 const struct xport
*peer
= xport
->peer
;
2656 struct flow old_flow
= ctx
->xin
->flow
;
2657 enum slow_path_reason special
;
2659 ctx
->xbridge
= peer
->xbridge
;
2660 flow
->in_port
.ofp_port
= peer
->ofp_port
;
2661 flow
->metadata
= htonll(0);
2662 memset(&flow
->tunnel
, 0, sizeof flow
->tunnel
);
2663 memset(flow
->regs
, 0, sizeof flow
->regs
);
2664 flow
->actset_output
= OFPP_UNSET
;
2666 special
= process_special(ctx
, &ctx
->xin
->flow
, peer
,
2669 ctx
->xout
->slow
|= special
;
2670 } else if (may_receive(peer
, ctx
)) {
2671 if (xport_stp_forward_state(peer
) && xport_rstp_forward_state(peer
)) {
2672 xlate_table_action(ctx
, flow
->in_port
.ofp_port
, 0, true, true);
2674 /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and
2675 * the learning action look at the packet, then drop it. */
2676 struct flow old_base_flow
= ctx
->base_flow
;
2677 size_t old_size
= ofpbuf_size(ctx
->xout
->odp_actions
);
2678 mirror_mask_t old_mirrors
= ctx
->xout
->mirrors
;
2679 xlate_table_action(ctx
, flow
->in_port
.ofp_port
, 0, true, true);
2680 ctx
->xout
->mirrors
= old_mirrors
;
2681 ctx
->base_flow
= old_base_flow
;
2682 ofpbuf_set_size(ctx
->xout
->odp_actions
, old_size
);
2686 ctx
->xin
->flow
= old_flow
;
2687 ctx
->xbridge
= xport
->xbridge
;
2689 if (ctx
->xin
->resubmit_stats
) {
2690 netdev_vport_inc_tx(xport
->netdev
, ctx
->xin
->resubmit_stats
);
2691 netdev_vport_inc_rx(peer
->netdev
, ctx
->xin
->resubmit_stats
);
2693 bfd_account_rx(peer
->bfd
, ctx
->xin
->resubmit_stats
);
2696 if (ctx
->xin
->xcache
) {
2697 struct xc_entry
*entry
;
2699 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NETDEV
);
2700 entry
->u
.dev
.tx
= netdev_ref(xport
->netdev
);
2701 entry
->u
.dev
.rx
= netdev_ref(peer
->netdev
);
2702 entry
->u
.dev
.bfd
= bfd_ref(peer
->bfd
);
2707 flow_vlan_tci
= flow
->vlan_tci
;
2708 flow_pkt_mark
= flow
->pkt_mark
;
2709 flow_nw_tos
= flow
->nw_tos
;
2711 if (count_skb_priorities(xport
)) {
2712 memset(&wc
->masks
.skb_priority
, 0xff, sizeof wc
->masks
.skb_priority
);
2713 if (dscp_from_skb_priority(xport
, flow
->skb_priority
, &dscp
)) {
2714 wc
->masks
.nw_tos
|= IP_DSCP_MASK
;
2715 flow
->nw_tos
&= ~IP_DSCP_MASK
;
2716 flow
->nw_tos
|= dscp
;
2720 if (xport
->is_tunnel
) {
2721 /* Save tunnel metadata so that changes made due to
2722 * the Logical (tunnel) Port are not visible for any further
2723 * matches, while explicit set actions on tunnel metadata are.
2725 flow_tnl
= flow
->tunnel
;
2726 odp_port
= tnl_port_send(xport
->ofport
, flow
, &ctx
->xout
->wc
);
2727 if (odp_port
== ODPP_NONE
) {
2728 xlate_report(ctx
, "Tunneling decided against output");
2729 goto out
; /* restore flow_nw_tos */
2731 if (flow
->tunnel
.ip_dst
== ctx
->orig_tunnel_ip_dst
) {
2732 xlate_report(ctx
, "Not tunneling to our own address");
2733 goto out
; /* restore flow_nw_tos */
2735 if (ctx
->xin
->resubmit_stats
) {
2736 netdev_vport_inc_tx(xport
->netdev
, ctx
->xin
->resubmit_stats
);
2738 if (ctx
->xin
->xcache
) {
2739 struct xc_entry
*entry
;
2741 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NETDEV
);
2742 entry
->u
.dev
.tx
= netdev_ref(xport
->netdev
);
2744 out_port
= odp_port
;
2745 if (ovs_native_tunneling_is_on(ctx
->xbridge
->ofproto
)) {
2746 tnl_push_pop_send
= true;
2748 commit_odp_tunnel_action(flow
, &ctx
->base_flow
,
2749 ctx
->xout
->odp_actions
);
2750 flow
->tunnel
= flow_tnl
; /* Restore tunnel metadata */
2753 odp_port
= xport
->odp_port
;
2754 out_port
= odp_port
;
2755 if (ofproto_has_vlan_splinters(ctx
->xbridge
->ofproto
)) {
2756 ofp_port_t vlandev_port
;
2758 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
2759 vlandev_port
= vsp_realdev_to_vlandev(ctx
->xbridge
->ofproto
,
2760 ofp_port
, flow
->vlan_tci
);
2761 if (vlandev_port
!= ofp_port
) {
2762 out_port
= ofp_port_to_odp_port(ctx
->xbridge
, vlandev_port
);
2763 flow
->vlan_tci
= htons(0);
2768 if (out_port
!= ODPP_NONE
) {
2769 ctx
->xout
->slow
|= commit_odp_actions(flow
, &ctx
->base_flow
,
2770 ctx
->xout
->odp_actions
,
2772 ctx
->xbridge
->masked_set_action
);
2774 if (ctx
->use_recirc
) {
2775 struct ovs_action_hash
*act_hash
;
2776 struct xlate_recirc
*xr
= &ctx
->recirc
;
2779 act_hash
= nl_msg_put_unspec_uninit(ctx
->xout
->odp_actions
,
2780 OVS_ACTION_ATTR_HASH
,
2782 act_hash
->hash_alg
= xr
->hash_alg
;
2783 act_hash
->hash_basis
= xr
->hash_basis
;
2785 /* Recirc action. */
2786 nl_msg_put_u32(ctx
->xout
->odp_actions
, OVS_ACTION_ATTR_RECIRC
,
2790 if (tnl_push_pop_send
) {
2791 build_tunnel_send(ctx
, xport
, flow
, odp_port
);
2792 flow
->tunnel
= flow_tnl
; /* Restore tunnel metadata */
2794 odp_port_t odp_tnl_port
= ODPP_NONE
;
2796 /* XXX: Write better Filter for tunnel port. We can use inport
2797 * int tunnel-port flow to avoid these checks completely. */
2798 if (ofp_port
== OFPP_LOCAL
&&
2799 ovs_native_tunneling_is_on(ctx
->xbridge
->ofproto
)) {
2801 odp_tnl_port
= tnl_port_map_lookup(flow
, wc
);
2804 if (odp_tnl_port
!= ODPP_NONE
) {
2805 nl_msg_put_odp_port(ctx
->xout
->odp_actions
,
2806 OVS_ACTION_ATTR_TUNNEL_POP
,
2809 /* Tunnel push-pop action is not compatible with
2811 add_ipfix_output_action(ctx
, out_port
);
2812 nl_msg_put_odp_port(ctx
->xout
->odp_actions
,
2813 OVS_ACTION_ATTR_OUTPUT
,
2819 ctx
->sflow_odp_port
= odp_port
;
2820 ctx
->sflow_n_outputs
++;
2821 ctx
->xout
->nf_output_iface
= ofp_port
;
2826 flow
->vlan_tci
= flow_vlan_tci
;
2827 flow
->pkt_mark
= flow_pkt_mark
;
2828 flow
->nw_tos
= flow_nw_tos
;
2832 compose_output_action(struct xlate_ctx
*ctx
, ofp_port_t ofp_port
)
2834 compose_output_action__(ctx
, ofp_port
, true);
2838 xlate_recursively(struct xlate_ctx
*ctx
, struct rule_dpif
*rule
)
2840 struct rule_dpif
*old_rule
= ctx
->rule
;
2841 const struct rule_actions
*actions
;
2843 if (ctx
->xin
->resubmit_stats
) {
2844 rule_dpif_credit_stats(rule
, ctx
->xin
->resubmit_stats
);
2850 actions
= rule_dpif_get_actions(rule
);
2851 do_xlate_actions(actions
->ofpacts
, actions
->ofpacts_len
, ctx
);
2852 ctx
->rule
= old_rule
;
2857 xlate_resubmit_resource_check(struct xlate_ctx
*ctx
)
2859 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
2861 if (ctx
->recurse
>= MAX_RESUBMIT_RECURSION
+ MAX_INTERNAL_RESUBMITS
) {
2862 VLOG_ERR_RL(&rl
, "resubmit actions recursed over %d times",
2863 MAX_RESUBMIT_RECURSION
);
2864 } else if (ctx
->resubmits
>= MAX_RESUBMITS
+ MAX_INTERNAL_RESUBMITS
) {
2865 VLOG_ERR_RL(&rl
, "over %d resubmit actions", MAX_RESUBMITS
);
2866 } else if (ofpbuf_size(ctx
->xout
->odp_actions
) > UINT16_MAX
) {
2867 VLOG_ERR_RL(&rl
, "resubmits yielded over 64 kB of actions");
2868 } else if (ofpbuf_size(&ctx
->stack
) >= 65536) {
2869 VLOG_ERR_RL(&rl
, "resubmits yielded over 64 kB of stack");
2878 xlate_table_action(struct xlate_ctx
*ctx
, ofp_port_t in_port
, uint8_t table_id
,
2879 bool may_packet_in
, bool honor_table_miss
)
2881 if (xlate_resubmit_resource_check(ctx
)) {
2882 struct flow_wildcards
*wc
;
2883 uint8_t old_table_id
= ctx
->table_id
;
2884 struct rule_dpif
*rule
;
2886 ctx
->table_id
= table_id
;
2887 wc
= (ctx
->xin
->skip_wildcards
) ? NULL
: &ctx
->xout
->wc
;
2889 rule
= rule_dpif_lookup_from_table(ctx
->xbridge
->ofproto
,
2890 &ctx
->xin
->flow
, wc
,
2891 ctx
->xin
->xcache
!= NULL
,
2892 ctx
->xin
->resubmit_stats
,
2893 &ctx
->table_id
, in_port
,
2894 may_packet_in
, honor_table_miss
);
2896 if (OVS_UNLIKELY(ctx
->xin
->resubmit_hook
)) {
2897 ctx
->xin
->resubmit_hook(ctx
->xin
, rule
, ctx
->recurse
+ 1);
2901 /* Fill in the cache entry here instead of xlate_recursively
2902 * to make the reference counting more explicit. We take a
2903 * reference in the lookups above if we are going to cache the
2905 if (ctx
->xin
->xcache
) {
2906 struct xc_entry
*entry
;
2908 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_RULE
);
2909 entry
->u
.rule
= rule
;
2911 xlate_recursively(ctx
, rule
);
2914 ctx
->table_id
= old_table_id
;
2922 xlate_group_stats(struct xlate_ctx
*ctx
, struct group_dpif
*group
,
2923 struct ofputil_bucket
*bucket
)
2925 if (ctx
->xin
->resubmit_stats
) {
2926 group_dpif_credit_stats(group
, bucket
, ctx
->xin
->resubmit_stats
);
2928 if (ctx
->xin
->xcache
) {
2929 struct xc_entry
*entry
;
2931 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_GROUP
);
2932 entry
->u
.group
.group
= group_dpif_ref(group
);
2933 entry
->u
.group
.bucket
= bucket
;
2938 xlate_group_bucket(struct xlate_ctx
*ctx
, struct ofputil_bucket
*bucket
)
2940 uint64_t action_list_stub
[1024 / 8];
2941 struct ofpbuf action_list
, action_set
;
2943 ofpbuf_use_const(&action_set
, bucket
->ofpacts
, bucket
->ofpacts_len
);
2944 ofpbuf_use_stub(&action_list
, action_list_stub
, sizeof action_list_stub
);
2946 ofpacts_execute_action_set(&action_list
, &action_set
);
2948 do_xlate_actions(ofpbuf_data(&action_list
), ofpbuf_size(&action_list
), ctx
);
2951 ofpbuf_uninit(&action_set
);
2952 ofpbuf_uninit(&action_list
);
2956 xlate_all_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
2958 struct ofputil_bucket
*bucket
;
2959 const struct list
*buckets
;
2960 struct flow old_flow
= ctx
->xin
->flow
;
2962 group_dpif_get_buckets(group
, &buckets
);
2964 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
2965 xlate_group_bucket(ctx
, bucket
);
2966 /* Roll back flow to previous state.
2967 * This is equivalent to cloning the packet for each bucket.
2969 * As a side effect any subsequently applied actions will
2970 * also effectively be applied to a clone of the packet taken
2971 * just before applying the all or indirect group. */
2972 ctx
->xin
->flow
= old_flow
;
2974 xlate_group_stats(ctx
, group
, NULL
);
2978 xlate_ff_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
2980 struct ofputil_bucket
*bucket
;
2982 bucket
= group_first_live_bucket(ctx
, group
, 0);
2984 xlate_group_bucket(ctx
, bucket
);
2985 xlate_group_stats(ctx
, group
, bucket
);
2990 xlate_select_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
2992 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
2993 struct ofputil_bucket
*bucket
;
2996 basis
= flow_hash_symmetric_l4(&ctx
->xin
->flow
, 0);
2997 bucket
= group_best_live_bucket(ctx
, group
, basis
);
2999 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
3000 memset(&wc
->masks
.dl_src
, 0xff, sizeof wc
->masks
.dl_src
);
3001 memset(&wc
->masks
.dl_type
, 0xff, sizeof wc
->masks
.dl_type
);
3002 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
3003 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
3004 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
3005 memset(&wc
->masks
.tp_dst
, 0xff, sizeof wc
->masks
.tp_dst
);
3006 memset(&wc
->masks
.tp_src
, 0xff, sizeof wc
->masks
.tp_src
);
3007 memset(&wc
->masks
.vlan_tci
, 0xff, sizeof wc
->masks
.vlan_tci
);
3009 xlate_group_bucket(ctx
, bucket
);
3010 xlate_group_stats(ctx
, group
, bucket
);
3015 xlate_group_action__(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
3017 ctx
->in_group
= true;
3019 switch (group_dpif_get_type(group
)) {
3021 case OFPGT11_INDIRECT
:
3022 xlate_all_group(ctx
, group
);
3024 case OFPGT11_SELECT
:
3025 xlate_select_group(ctx
, group
);
3028 xlate_ff_group(ctx
, group
);
3033 group_dpif_unref(group
);
3035 ctx
->in_group
= false;
3039 xlate_group_resource_check(struct xlate_ctx
*ctx
)
3041 if (!xlate_resubmit_resource_check(ctx
)) {
3043 } else if (ctx
->in_group
) {
3044 /* Prevent nested translation of OpenFlow groups.
3046 * OpenFlow allows this restriction. We enforce this restriction only
3047 * because, with the current architecture, we would otherwise have to
3048 * take a possibly recursive read lock on the ofgroup rwlock, which is
3049 * unsafe given that POSIX allows taking a read lock to block if there
3050 * is a thread blocked on taking the write lock. Other solutions
3051 * without this restriction are also possible, but seem unwarranted
3052 * given the current limited use of groups. */
3053 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3055 VLOG_ERR_RL(&rl
, "cannot recursively translate OpenFlow group");
3063 xlate_group_action(struct xlate_ctx
*ctx
, uint32_t group_id
)
3065 if (xlate_group_resource_check(ctx
)) {
3066 struct group_dpif
*group
;
3069 got_group
= group_dpif_lookup(ctx
->xbridge
->ofproto
, group_id
, &group
);
3071 xlate_group_action__(ctx
, group
);
3081 xlate_ofpact_resubmit(struct xlate_ctx
*ctx
,
3082 const struct ofpact_resubmit
*resubmit
)
3086 bool may_packet_in
= false;
3087 bool honor_table_miss
= false;
3089 if (ctx
->rule
&& rule_dpif_is_internal(ctx
->rule
)) {
3090 /* Still allow missed packets to be sent to the controller
3091 * if resubmitting from an internal table. */
3092 may_packet_in
= true;
3093 honor_table_miss
= true;
3096 in_port
= resubmit
->in_port
;
3097 if (in_port
== OFPP_IN_PORT
) {
3098 in_port
= ctx
->xin
->flow
.in_port
.ofp_port
;
3101 table_id
= resubmit
->table_id
;
3102 if (table_id
== 255) {
3103 table_id
= ctx
->table_id
;
3106 xlate_table_action(ctx
, in_port
, table_id
, may_packet_in
,
3111 flood_packets(struct xlate_ctx
*ctx
, bool all
)
3113 const struct xport
*xport
;
3115 HMAP_FOR_EACH (xport
, ofp_node
, &ctx
->xbridge
->xports
) {
3116 if (xport
->ofp_port
== ctx
->xin
->flow
.in_port
.ofp_port
) {
3121 compose_output_action__(ctx
, xport
->ofp_port
, false);
3122 } else if (!(xport
->config
& OFPUTIL_PC_NO_FLOOD
)) {
3123 compose_output_action(ctx
, xport
->ofp_port
);
3127 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
3131 execute_controller_action(struct xlate_ctx
*ctx
, int len
,
3132 enum ofp_packet_in_reason reason
,
3133 uint16_t controller_id
)
3135 struct ofproto_packet_in
*pin
;
3136 struct dpif_packet
*packet
;
3138 ctx
->xout
->slow
|= SLOW_CONTROLLER
;
3139 if (!ctx
->xin
->packet
) {
3143 packet
= dpif_packet_clone_from_ofpbuf(ctx
->xin
->packet
);
3145 ctx
->xout
->slow
|= commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
3146 ctx
->xout
->odp_actions
,
3148 ctx
->xbridge
->masked_set_action
);
3150 odp_execute_actions(NULL
, &packet
, 1, false,
3151 ofpbuf_data(ctx
->xout
->odp_actions
),
3152 ofpbuf_size(ctx
->xout
->odp_actions
), NULL
);
3154 pin
= xmalloc(sizeof *pin
);
3155 pin
->up
.packet_len
= ofpbuf_size(&packet
->ofpbuf
);
3156 pin
->up
.packet
= ofpbuf_steal_data(&packet
->ofpbuf
);
3157 pin
->up
.reason
= reason
;
3158 pin
->up
.table_id
= ctx
->table_id
;
3159 pin
->up
.cookie
= (ctx
->rule
3160 ? rule_dpif_get_flow_cookie(ctx
->rule
)
3163 flow_get_metadata(&ctx
->xin
->flow
, &pin
->up
.fmd
);
3165 pin
->controller_id
= controller_id
;
3166 pin
->send_len
= len
;
3167 /* If a rule is a table-miss rule then this is
3168 * a table-miss handled by a table-miss rule.
3170 * Else, if rule is internal and has a controller action,
3171 * the later being implied by the rule being processed here,
3172 * then this is a table-miss handled without a table-miss rule.
3174 * Otherwise this is not a table-miss. */
3175 pin
->miss_type
= OFPROTO_PACKET_IN_NO_MISS
;
3177 if (rule_dpif_is_table_miss(ctx
->rule
)) {
3178 pin
->miss_type
= OFPROTO_PACKET_IN_MISS_FLOW
;
3179 } else if (rule_dpif_is_internal(ctx
->rule
)) {
3180 pin
->miss_type
= OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW
;
3183 ofproto_dpif_send_packet_in(ctx
->xbridge
->ofproto
, pin
);
3184 dpif_packet_delete(packet
);
3188 compose_recirculate_action(struct xlate_ctx
*ctx
,
3189 const struct ofpact
*ofpacts_base
,
3190 const struct ofpact
*ofpact_current
,
3191 size_t ofpacts_base_len
)
3195 unsigned ofpacts_len
;
3198 struct ofpbuf ofpacts
;
3202 ofpacts_len
= ofpacts_base_len
-
3203 ((uint8_t *)ofpact_current
- (uint8_t *)ofpacts_base
);
3206 id
= rule_dpif_get_recirc_id(ctx
->rule
);
3208 /* In the case where ctx has no rule then allocate a recirc id.
3209 * The life-cycle of this recirc id is managed by associating it
3210 * with the internal rule that is created to to handle
3211 * recirculation below.
3213 * The known use-case of this is packet_out which
3214 * translates actions without a rule */
3215 id
= ofproto_dpif_alloc_recirc_id(ctx
->xbridge
->ofproto
);
3218 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3219 VLOG_ERR_RL(&rl
, "Failed to allocate recirculation id");
3223 match_init_catchall(&match
);
3224 match_set_recirc_id(&match
, id
);
3225 ofpbuf_use_const(&ofpacts
, ofpact_current
, ofpacts_len
);
3226 error
= ofproto_dpif_add_internal_flow(ctx
->xbridge
->ofproto
, &match
,
3227 RECIRC_RULE_PRIORITY
,
3228 RECIRC_TIMEOUT
, &ofpacts
, &rule
);
3230 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3231 VLOG_ERR_RL(&rl
, "Failed to add post recirculation flow %s",
3232 match_to_string(&match
, 0));
3235 /* If ctx has no rule then associate the recirc id, which
3236 * was allocated above, with the internal rule. This allows
3237 * the recirc id to be released when the internal rule times out. */
3239 rule_set_recirc_id(rule
, id
);
3242 ctx
->xout
->slow
|= commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
3243 ctx
->xout
->odp_actions
,
3245 ctx
->xbridge
->masked_set_action
);
3246 nl_msg_put_u32(ctx
->xout
->odp_actions
, OVS_ACTION_ATTR_RECIRC
, id
);
3250 compose_mpls_push_action(struct xlate_ctx
*ctx
, struct ofpact_push_mpls
*mpls
)
3252 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
3253 struct flow
*flow
= &ctx
->xin
->flow
;
3256 ovs_assert(eth_type_mpls(mpls
->ethertype
));
3258 n
= flow_count_mpls_labels(flow
, wc
);
3260 ctx
->xout
->slow
|= commit_odp_actions(flow
, &ctx
->base_flow
,
3261 ctx
->xout
->odp_actions
,
3263 ctx
->xbridge
->masked_set_action
);
3264 } else if (n
>= FLOW_MAX_MPLS_LABELS
) {
3265 if (ctx
->xin
->packet
!= NULL
) {
3266 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3267 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet on which an "
3268 "MPLS push action can't be performed as it would "
3269 "have more MPLS LSEs than the %d supported.",
3270 ctx
->xbridge
->name
, FLOW_MAX_MPLS_LABELS
);
3274 } else if (n
>= ctx
->xbridge
->max_mpls_depth
) {
3275 COVERAGE_INC(xlate_actions_mpls_overflow
);
3276 ctx
->xout
->slow
|= SLOW_ACTION
;
3279 flow_push_mpls(flow
, n
, mpls
->ethertype
, wc
);
3283 compose_mpls_pop_action(struct xlate_ctx
*ctx
, ovs_be16 eth_type
)
3285 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
3286 struct flow
*flow
= &ctx
->xin
->flow
;
3287 int n
= flow_count_mpls_labels(flow
, wc
);
3289 if (flow_pop_mpls(flow
, n
, eth_type
, wc
)) {
3290 if (ctx
->xbridge
->enable_recirc
&& !eth_type_mpls(eth_type
)) {
3291 ctx
->was_mpls
= true;
3293 } else if (n
>= FLOW_MAX_MPLS_LABELS
) {
3294 if (ctx
->xin
->packet
!= NULL
) {
3295 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3296 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet on which an "
3297 "MPLS pop action can't be performed as it has "
3298 "more MPLS LSEs than the %d supported.",
3299 ctx
->xbridge
->name
, FLOW_MAX_MPLS_LABELS
);
3302 ofpbuf_clear(ctx
->xout
->odp_actions
);
3307 compose_dec_ttl(struct xlate_ctx
*ctx
, struct ofpact_cnt_ids
*ids
)
3309 struct flow
*flow
= &ctx
->xin
->flow
;
3311 if (!is_ip_any(flow
)) {
3315 ctx
->xout
->wc
.masks
.nw_ttl
= 0xff;
3316 if (flow
->nw_ttl
> 1) {
3322 for (i
= 0; i
< ids
->n_controllers
; i
++) {
3323 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
,
3327 /* Stop processing for current table. */
3333 compose_set_mpls_label_action(struct xlate_ctx
*ctx
, ovs_be32 label
)
3335 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
3336 ctx
->xout
->wc
.masks
.mpls_lse
[0] |= htonl(MPLS_LABEL_MASK
);
3337 set_mpls_lse_label(&ctx
->xin
->flow
.mpls_lse
[0], label
);
3342 compose_set_mpls_tc_action(struct xlate_ctx
*ctx
, uint8_t tc
)
3344 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
3345 ctx
->xout
->wc
.masks
.mpls_lse
[0] |= htonl(MPLS_TC_MASK
);
3346 set_mpls_lse_tc(&ctx
->xin
->flow
.mpls_lse
[0], tc
);
3351 compose_set_mpls_ttl_action(struct xlate_ctx
*ctx
, uint8_t ttl
)
3353 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
3354 ctx
->xout
->wc
.masks
.mpls_lse
[0] |= htonl(MPLS_TTL_MASK
);
3355 set_mpls_lse_ttl(&ctx
->xin
->flow
.mpls_lse
[0], ttl
);
3360 compose_dec_mpls_ttl_action(struct xlate_ctx
*ctx
)
3362 struct flow
*flow
= &ctx
->xin
->flow
;
3363 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
3365 if (eth_type_mpls(flow
->dl_type
)) {
3366 uint8_t ttl
= mpls_lse_to_ttl(flow
->mpls_lse
[0]);
3368 wc
->masks
.mpls_lse
[0] |= htonl(MPLS_TTL_MASK
);
3371 set_mpls_lse_ttl(&flow
->mpls_lse
[0], ttl
);
3374 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
, 0);
3378 /* Stop processing for current table. */
3383 xlate_output_action(struct xlate_ctx
*ctx
,
3384 ofp_port_t port
, uint16_t max_len
, bool may_packet_in
)
3386 ofp_port_t prev_nf_output_iface
= ctx
->xout
->nf_output_iface
;
3388 ctx
->xout
->nf_output_iface
= NF_OUT_DROP
;
3392 compose_output_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
);
3395 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
,
3396 0, may_packet_in
, true);
3402 flood_packets(ctx
, false);
3405 flood_packets(ctx
, true);
3407 case OFPP_CONTROLLER
:
3408 execute_controller_action(ctx
, max_len
, OFPR_ACTION
, 0);
3414 if (port
!= ctx
->xin
->flow
.in_port
.ofp_port
) {
3415 compose_output_action(ctx
, port
);
3417 xlate_report(ctx
, "skipping output to input port");
3422 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
3423 ctx
->xout
->nf_output_iface
= NF_OUT_FLOOD
;
3424 } else if (ctx
->xout
->nf_output_iface
== NF_OUT_DROP
) {
3425 ctx
->xout
->nf_output_iface
= prev_nf_output_iface
;
3426 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
3427 ctx
->xout
->nf_output_iface
!= NF_OUT_FLOOD
) {
3428 ctx
->xout
->nf_output_iface
= NF_OUT_MULTI
;
3433 xlate_output_reg_action(struct xlate_ctx
*ctx
,
3434 const struct ofpact_output_reg
*or)
3436 uint64_t port
= mf_get_subfield(&or->src
, &ctx
->xin
->flow
);
3437 if (port
<= UINT16_MAX
) {
3438 union mf_subvalue value
;
3440 memset(&value
, 0xff, sizeof value
);
3441 mf_write_subfield_flow(&or->src
, &value
, &ctx
->xout
->wc
.masks
);
3442 xlate_output_action(ctx
, u16_to_ofp(port
),
3443 or->max_len
, false);
3448 xlate_enqueue_action(struct xlate_ctx
*ctx
,
3449 const struct ofpact_enqueue
*enqueue
)
3451 ofp_port_t ofp_port
= enqueue
->port
;
3452 uint32_t queue_id
= enqueue
->queue
;
3453 uint32_t flow_priority
, priority
;
3456 /* Translate queue to priority. */
3457 error
= dpif_queue_to_priority(ctx
->xbridge
->dpif
, queue_id
, &priority
);
3459 /* Fall back to ordinary output action. */
3460 xlate_output_action(ctx
, enqueue
->port
, 0, false);
3464 /* Check output port. */
3465 if (ofp_port
== OFPP_IN_PORT
) {
3466 ofp_port
= ctx
->xin
->flow
.in_port
.ofp_port
;
3467 } else if (ofp_port
== ctx
->xin
->flow
.in_port
.ofp_port
) {
3471 /* Add datapath actions. */
3472 flow_priority
= ctx
->xin
->flow
.skb_priority
;
3473 ctx
->xin
->flow
.skb_priority
= priority
;
3474 compose_output_action(ctx
, ofp_port
);
3475 ctx
->xin
->flow
.skb_priority
= flow_priority
;
3477 /* Update NetFlow output port. */
3478 if (ctx
->xout
->nf_output_iface
== NF_OUT_DROP
) {
3479 ctx
->xout
->nf_output_iface
= ofp_port
;
3480 } else if (ctx
->xout
->nf_output_iface
!= NF_OUT_FLOOD
) {
3481 ctx
->xout
->nf_output_iface
= NF_OUT_MULTI
;
3486 xlate_set_queue_action(struct xlate_ctx
*ctx
, uint32_t queue_id
)
3488 uint32_t skb_priority
;
3490 if (!dpif_queue_to_priority(ctx
->xbridge
->dpif
, queue_id
, &skb_priority
)) {
3491 ctx
->xin
->flow
.skb_priority
= skb_priority
;
3493 /* Couldn't translate queue to a priority. Nothing to do. A warning
3494 * has already been logged. */
3499 slave_enabled_cb(ofp_port_t ofp_port
, void *xbridge_
)
3501 const struct xbridge
*xbridge
= xbridge_
;
3512 case OFPP_CONTROLLER
: /* Not supported by the bundle action. */
3515 port
= get_ofp_port(xbridge
, ofp_port
);
3516 return port
? port
->may_enable
: false;
3521 xlate_bundle_action(struct xlate_ctx
*ctx
,
3522 const struct ofpact_bundle
*bundle
)
3526 port
= bundle_execute(bundle
, &ctx
->xin
->flow
, &ctx
->xout
->wc
,
3528 CONST_CAST(struct xbridge
*, ctx
->xbridge
));
3529 if (bundle
->dst
.field
) {
3530 nxm_reg_load(&bundle
->dst
, ofp_to_u16(port
), &ctx
->xin
->flow
,
3533 xlate_output_action(ctx
, port
, 0, false);
3538 xlate_learn_action__(struct xlate_ctx
*ctx
, const struct ofpact_learn
*learn
,
3539 struct ofputil_flow_mod
*fm
, struct ofpbuf
*ofpacts
)
3541 learn_execute(learn
, &ctx
->xin
->flow
, fm
, ofpacts
);
3542 if (ctx
->xin
->may_learn
) {
3543 ofproto_dpif_flow_mod(ctx
->xbridge
->ofproto
, fm
);
3548 xlate_learn_action(struct xlate_ctx
*ctx
, const struct ofpact_learn
*learn
)
3550 ctx
->xout
->has_learn
= true;
3551 learn_mask(learn
, &ctx
->xout
->wc
);
3553 if (ctx
->xin
->xcache
) {
3554 struct xc_entry
*entry
;
3556 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_LEARN
);
3557 entry
->u
.learn
.ofproto
= ctx
->xbridge
->ofproto
;
3558 entry
->u
.learn
.fm
= xmalloc(sizeof *entry
->u
.learn
.fm
);
3559 entry
->u
.learn
.ofpacts
= ofpbuf_new(64);
3560 xlate_learn_action__(ctx
, learn
, entry
->u
.learn
.fm
,
3561 entry
->u
.learn
.ofpacts
);
3562 } else if (ctx
->xin
->may_learn
) {
3563 uint64_t ofpacts_stub
[1024 / 8];
3564 struct ofputil_flow_mod fm
;
3565 struct ofpbuf ofpacts
;
3567 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
3568 xlate_learn_action__(ctx
, learn
, &fm
, &ofpacts
);
3569 ofpbuf_uninit(&ofpacts
);
3574 xlate_fin_timeout__(struct rule_dpif
*rule
, uint16_t tcp_flags
,
3575 uint16_t idle_timeout
, uint16_t hard_timeout
)
3577 if (tcp_flags
& (TCP_FIN
| TCP_RST
)) {
3578 rule_dpif_reduce_timeouts(rule
, idle_timeout
, hard_timeout
);
3583 xlate_fin_timeout(struct xlate_ctx
*ctx
,
3584 const struct ofpact_fin_timeout
*oft
)
3587 xlate_fin_timeout__(ctx
->rule
, ctx
->xin
->tcp_flags
,
3588 oft
->fin_idle_timeout
, oft
->fin_hard_timeout
);
3589 if (ctx
->xin
->xcache
) {
3590 struct xc_entry
*entry
;
3592 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_FIN_TIMEOUT
);
3593 /* XC_RULE already holds a reference on the rule, none is taken
3595 entry
->u
.fin
.rule
= ctx
->rule
;
3596 entry
->u
.fin
.idle
= oft
->fin_idle_timeout
;
3597 entry
->u
.fin
.hard
= oft
->fin_hard_timeout
;
3603 xlate_sample_action(struct xlate_ctx
*ctx
,
3604 const struct ofpact_sample
*os
)
3606 union user_action_cookie cookie
;
3607 /* Scale the probability from 16-bit to 32-bit while representing
3608 * the same percentage. */
3609 uint32_t probability
= (os
->probability
<< 16) | os
->probability
;
3611 if (!ctx
->xbridge
->variable_length_userdata
) {
3612 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3614 VLOG_ERR_RL(&rl
, "ignoring NXAST_SAMPLE action because datapath "
3615 "lacks support (needs Linux 3.10+ or kernel module from "
3620 ctx
->xout
->slow
|= commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
3621 ctx
->xout
->odp_actions
,
3623 ctx
->xbridge
->masked_set_action
);
3625 compose_flow_sample_cookie(os
->probability
, os
->collector_set_id
,
3626 os
->obs_domain_id
, os
->obs_point_id
, &cookie
);
3627 compose_sample_action(ctx
->xbridge
, ctx
->xout
->odp_actions
, &ctx
->xin
->flow
,
3628 probability
, &cookie
, sizeof cookie
.flow_sample
,
3633 may_receive(const struct xport
*xport
, struct xlate_ctx
*ctx
)
3635 if (xport
->config
& (is_stp(&ctx
->xin
->flow
)
3636 ? OFPUTIL_PC_NO_RECV_STP
3637 : OFPUTIL_PC_NO_RECV
)) {
3641 /* Only drop packets here if both forwarding and learning are
3642 * disabled. If just learning is enabled, we need to have
3643 * OFPP_NORMAL and the learning action have a look at the packet
3644 * before we can drop it. */
3645 if ((!xport_stp_forward_state(xport
) && !xport_stp_learn_state(xport
)) ||
3646 (!xport_rstp_forward_state(xport
) && !xport_rstp_learn_state(xport
))) {
3654 xlate_write_actions(struct xlate_ctx
*ctx
, const struct ofpact
*a
)
3656 const struct ofpact_nest
*on
= ofpact_get_WRITE_ACTIONS(a
);
3657 size_t on_len
= ofpact_nest_get_action_len(on
);
3658 const struct ofpact
*inner
;
3660 /* Maintain actset_output depending on the contents of the action set:
3662 * - OFPP_UNSET, if there is no "output" action.
3664 * - The output port, if there is an "output" action and no "group"
3667 * - OFPP_UNSET, if there is a "group" action.
3669 if (!ctx
->action_set_has_group
) {
3670 OFPACT_FOR_EACH (inner
, on
->actions
, on_len
) {
3671 if (inner
->type
== OFPACT_OUTPUT
) {
3672 ctx
->xin
->flow
.actset_output
= ofpact_get_OUTPUT(inner
)->port
;
3673 } else if (inner
->type
== OFPACT_GROUP
) {
3674 ctx
->xin
->flow
.actset_output
= OFPP_UNSET
;
3675 ctx
->action_set_has_group
= true;
3680 ofpbuf_put(&ctx
->action_set
, on
->actions
, on_len
);
3681 ofpact_pad(&ctx
->action_set
);
3685 xlate_action_set(struct xlate_ctx
*ctx
)
3687 uint64_t action_list_stub
[1024 / 64];
3688 struct ofpbuf action_list
;
3690 ofpbuf_use_stub(&action_list
, action_list_stub
, sizeof action_list_stub
);
3691 ofpacts_execute_action_set(&action_list
, &ctx
->action_set
);
3692 do_xlate_actions(ofpbuf_data(&action_list
), ofpbuf_size(&action_list
), ctx
);
3693 ofpbuf_uninit(&action_list
);
3697 ofpact_needs_recirculation_after_mpls(const struct xlate_ctx
*ctx
,
3698 const struct ofpact
*a
)
3700 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
3701 struct flow
*flow
= &ctx
->xin
->flow
;
3706 case OFPACT_CONTROLLER
:
3707 case OFPACT_STRIP_VLAN
:
3708 case OFPACT_SET_VLAN_PCP
:
3709 case OFPACT_SET_VLAN_VID
:
3710 case OFPACT_ENQUEUE
:
3711 case OFPACT_PUSH_VLAN
:
3712 case OFPACT_SET_ETH_SRC
:
3713 case OFPACT_SET_ETH_DST
:
3714 case OFPACT_SET_TUNNEL
:
3715 case OFPACT_SET_QUEUE
:
3716 case OFPACT_POP_QUEUE
:
3717 case OFPACT_POP_MPLS
:
3718 case OFPACT_DEC_MPLS_TTL
:
3719 case OFPACT_SET_MPLS_TTL
:
3720 case OFPACT_SET_MPLS_TC
:
3721 case OFPACT_SET_MPLS_LABEL
:
3723 case OFPACT_OUTPUT_REG
:
3726 case OFPACT_WRITE_METADATA
:
3727 case OFPACT_WRITE_ACTIONS
:
3728 case OFPACT_CLEAR_ACTIONS
:
3732 case OFPACT_SET_IPV4_SRC
:
3733 case OFPACT_SET_IPV4_DST
:
3734 case OFPACT_SET_IP_DSCP
:
3735 case OFPACT_SET_IP_ECN
:
3736 case OFPACT_SET_IP_TTL
:
3737 case OFPACT_SET_L4_SRC_PORT
:
3738 case OFPACT_SET_L4_DST_PORT
:
3739 case OFPACT_RESUBMIT
:
3740 case OFPACT_STACK_PUSH
:
3741 case OFPACT_STACK_POP
:
3742 case OFPACT_DEC_TTL
:
3743 case OFPACT_MULTIPATH
:
3746 case OFPACT_FIN_TIMEOUT
:
3747 case OFPACT_GOTO_TABLE
:
3750 case OFPACT_REG_MOVE
:
3751 return (mf_is_l3_or_higher(ofpact_get_REG_MOVE(a
)->dst
.field
) ||
3752 mf_is_l3_or_higher(ofpact_get_REG_MOVE(a
)->src
.field
));
3754 case OFPACT_SET_FIELD
:
3755 return mf_is_l3_or_higher(ofpact_get_SET_FIELD(a
)->field
);
3757 case OFPACT_PUSH_MPLS
:
3758 /* Recirculate if it is an IP packet with a zero ttl. This may
3759 * indicate that the packet was previously MPLS and an MPLS pop action
3760 * converted it to IP. In this case recirculating should reveal the IP
3761 * TTL which is used as the basis for a new MPLS LSE. */
3762 return (!flow_count_mpls_labels(flow
, wc
)
3763 && flow
->nw_ttl
== 0
3764 && is_ip_any(flow
));
3771 do_xlate_actions(const struct ofpact
*ofpacts
, size_t ofpacts_len
,
3772 struct xlate_ctx
*ctx
)
3774 struct flow_wildcards
*wc
= &ctx
->xout
->wc
;
3775 struct flow
*flow
= &ctx
->xin
->flow
;
3776 const struct ofpact
*a
;
3778 if (ovs_native_tunneling_is_on(ctx
->xbridge
->ofproto
)) {
3779 tnl_arp_snoop(flow
, wc
, ctx
->xbridge
->name
);
3781 /* dl_type already in the mask, not set below. */
3783 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
3784 struct ofpact_controller
*controller
;
3785 const struct ofpact_metadata
*metadata
;
3786 const struct ofpact_set_field
*set_field
;
3787 const struct mf_field
*mf
;
3793 if (ctx
->was_mpls
&& ofpact_needs_recirculation_after_mpls(ctx
, a
)) {
3794 compose_recirculate_action(ctx
, ofpacts
, a
, ofpacts_len
);
3800 xlate_output_action(ctx
, ofpact_get_OUTPUT(a
)->port
,
3801 ofpact_get_OUTPUT(a
)->max_len
, true);
3805 if (xlate_group_action(ctx
, ofpact_get_GROUP(a
)->group_id
)) {
3810 case OFPACT_CONTROLLER
:
3811 controller
= ofpact_get_CONTROLLER(a
);
3812 execute_controller_action(ctx
, controller
->max_len
,
3814 controller
->controller_id
);
3817 case OFPACT_ENQUEUE
:
3818 memset(&wc
->masks
.skb_priority
, 0xff,
3819 sizeof wc
->masks
.skb_priority
);
3820 xlate_enqueue_action(ctx
, ofpact_get_ENQUEUE(a
));
3823 case OFPACT_SET_VLAN_VID
:
3824 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
3825 if (flow
->vlan_tci
& htons(VLAN_CFI
) ||
3826 ofpact_get_SET_VLAN_VID(a
)->push_vlan_if_needed
) {
3827 flow
->vlan_tci
&= ~htons(VLAN_VID_MASK
);
3828 flow
->vlan_tci
|= (htons(ofpact_get_SET_VLAN_VID(a
)->vlan_vid
)
3833 case OFPACT_SET_VLAN_PCP
:
3834 wc
->masks
.vlan_tci
|= htons(VLAN_PCP_MASK
| VLAN_CFI
);
3835 if (flow
->vlan_tci
& htons(VLAN_CFI
) ||
3836 ofpact_get_SET_VLAN_PCP(a
)->push_vlan_if_needed
) {
3837 flow
->vlan_tci
&= ~htons(VLAN_PCP_MASK
);
3838 flow
->vlan_tci
|= htons((ofpact_get_SET_VLAN_PCP(a
)->vlan_pcp
3839 << VLAN_PCP_SHIFT
) | VLAN_CFI
);
3843 case OFPACT_STRIP_VLAN
:
3844 memset(&wc
->masks
.vlan_tci
, 0xff, sizeof wc
->masks
.vlan_tci
);
3845 flow
->vlan_tci
= htons(0);
3848 case OFPACT_PUSH_VLAN
:
3849 /* XXX 802.1AD(QinQ) */
3850 memset(&wc
->masks
.vlan_tci
, 0xff, sizeof wc
->masks
.vlan_tci
);
3851 flow
->vlan_tci
= htons(VLAN_CFI
);
3854 case OFPACT_SET_ETH_SRC
:
3855 memset(&wc
->masks
.dl_src
, 0xff, sizeof wc
->masks
.dl_src
);
3856 memcpy(flow
->dl_src
, ofpact_get_SET_ETH_SRC(a
)->mac
, ETH_ADDR_LEN
);
3859 case OFPACT_SET_ETH_DST
:
3860 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
3861 memcpy(flow
->dl_dst
, ofpact_get_SET_ETH_DST(a
)->mac
, ETH_ADDR_LEN
);
3864 case OFPACT_SET_IPV4_SRC
:
3865 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
3866 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
3867 flow
->nw_src
= ofpact_get_SET_IPV4_SRC(a
)->ipv4
;
3871 case OFPACT_SET_IPV4_DST
:
3872 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
3873 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
3874 flow
->nw_dst
= ofpact_get_SET_IPV4_DST(a
)->ipv4
;
3878 case OFPACT_SET_IP_DSCP
:
3879 if (is_ip_any(flow
)) {
3880 wc
->masks
.nw_tos
|= IP_DSCP_MASK
;
3881 flow
->nw_tos
&= ~IP_DSCP_MASK
;
3882 flow
->nw_tos
|= ofpact_get_SET_IP_DSCP(a
)->dscp
;
3886 case OFPACT_SET_IP_ECN
:
3887 if (is_ip_any(flow
)) {
3888 wc
->masks
.nw_tos
|= IP_ECN_MASK
;
3889 flow
->nw_tos
&= ~IP_ECN_MASK
;
3890 flow
->nw_tos
|= ofpact_get_SET_IP_ECN(a
)->ecn
;
3894 case OFPACT_SET_IP_TTL
:
3895 if (is_ip_any(flow
)) {
3896 wc
->masks
.nw_ttl
= 0xff;
3897 flow
->nw_ttl
= ofpact_get_SET_IP_TTL(a
)->ttl
;
3901 case OFPACT_SET_L4_SRC_PORT
:
3902 if (is_ip_any(flow
) && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
3903 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
3904 memset(&wc
->masks
.tp_src
, 0xff, sizeof wc
->masks
.tp_src
);
3905 flow
->tp_src
= htons(ofpact_get_SET_L4_SRC_PORT(a
)->port
);
3909 case OFPACT_SET_L4_DST_PORT
:
3910 if (is_ip_any(flow
) && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
3911 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
3912 memset(&wc
->masks
.tp_dst
, 0xff, sizeof wc
->masks
.tp_dst
);
3913 flow
->tp_dst
= htons(ofpact_get_SET_L4_DST_PORT(a
)->port
);
3917 case OFPACT_RESUBMIT
:
3918 xlate_ofpact_resubmit(ctx
, ofpact_get_RESUBMIT(a
));
3921 case OFPACT_SET_TUNNEL
:
3922 flow
->tunnel
.tun_id
= htonll(ofpact_get_SET_TUNNEL(a
)->tun_id
);
3925 case OFPACT_SET_QUEUE
:
3926 memset(&wc
->masks
.skb_priority
, 0xff,
3927 sizeof wc
->masks
.skb_priority
);
3928 xlate_set_queue_action(ctx
, ofpact_get_SET_QUEUE(a
)->queue_id
);
3931 case OFPACT_POP_QUEUE
:
3932 memset(&wc
->masks
.skb_priority
, 0xff,
3933 sizeof wc
->masks
.skb_priority
);
3934 flow
->skb_priority
= ctx
->orig_skb_priority
;
3937 case OFPACT_REG_MOVE
:
3938 nxm_execute_reg_move(ofpact_get_REG_MOVE(a
), flow
, wc
);
3941 case OFPACT_SET_FIELD
:
3942 set_field
= ofpact_get_SET_FIELD(a
);
3943 mf
= set_field
->field
;
3945 /* Set field action only ever overwrites packet's outermost
3946 * applicable header fields. Do nothing if no header exists. */
3947 if (mf
->id
== MFF_VLAN_VID
) {
3948 wc
->masks
.vlan_tci
|= htons(VLAN_CFI
);
3949 if (!(flow
->vlan_tci
& htons(VLAN_CFI
))) {
3952 } else if ((mf
->id
== MFF_MPLS_LABEL
|| mf
->id
== MFF_MPLS_TC
)
3953 /* 'dl_type' is already unwildcarded. */
3954 && !eth_type_mpls(flow
->dl_type
)) {
3957 /* A flow may wildcard nw_frag. Do nothing if setting a trasport
3958 * header field on a packet that does not have them. */
3959 mf_mask_field_and_prereqs(mf
, &wc
->masks
);
3960 if (mf_are_prereqs_ok(mf
, flow
)) {
3961 mf_set_flow_value_masked(mf
, &set_field
->value
,
3962 &set_field
->mask
, flow
);
3966 case OFPACT_STACK_PUSH
:
3967 nxm_execute_stack_push(ofpact_get_STACK_PUSH(a
), flow
, wc
,
3971 case OFPACT_STACK_POP
:
3972 nxm_execute_stack_pop(ofpact_get_STACK_POP(a
), flow
, wc
,
3976 case OFPACT_PUSH_MPLS
:
3977 compose_mpls_push_action(ctx
, ofpact_get_PUSH_MPLS(a
));
3980 case OFPACT_POP_MPLS
:
3981 compose_mpls_pop_action(ctx
, ofpact_get_POP_MPLS(a
)->ethertype
);
3984 case OFPACT_SET_MPLS_LABEL
:
3985 compose_set_mpls_label_action(
3986 ctx
, ofpact_get_SET_MPLS_LABEL(a
)->label
);
3989 case OFPACT_SET_MPLS_TC
:
3990 compose_set_mpls_tc_action(ctx
, ofpact_get_SET_MPLS_TC(a
)->tc
);
3993 case OFPACT_SET_MPLS_TTL
:
3994 compose_set_mpls_ttl_action(ctx
, ofpact_get_SET_MPLS_TTL(a
)->ttl
);
3997 case OFPACT_DEC_MPLS_TTL
:
3998 if (compose_dec_mpls_ttl_action(ctx
)) {
4003 case OFPACT_DEC_TTL
:
4004 wc
->masks
.nw_ttl
= 0xff;
4005 if (compose_dec_ttl(ctx
, ofpact_get_DEC_TTL(a
))) {
4011 /* Nothing to do. */
4014 case OFPACT_MULTIPATH
:
4015 multipath_execute(ofpact_get_MULTIPATH(a
), flow
, wc
);
4019 xlate_bundle_action(ctx
, ofpact_get_BUNDLE(a
));
4022 case OFPACT_OUTPUT_REG
:
4023 xlate_output_reg_action(ctx
, ofpact_get_OUTPUT_REG(a
));
4027 xlate_learn_action(ctx
, ofpact_get_LEARN(a
));
4034 case OFPACT_FIN_TIMEOUT
:
4035 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
4036 ctx
->xout
->has_fin_timeout
= true;
4037 xlate_fin_timeout(ctx
, ofpact_get_FIN_TIMEOUT(a
));
4040 case OFPACT_CLEAR_ACTIONS
:
4041 ofpbuf_clear(&ctx
->action_set
);
4042 ctx
->xin
->flow
.actset_output
= OFPP_UNSET
;
4043 ctx
->action_set_has_group
= false;
4046 case OFPACT_WRITE_ACTIONS
:
4047 xlate_write_actions(ctx
, a
);
4050 case OFPACT_WRITE_METADATA
:
4051 metadata
= ofpact_get_WRITE_METADATA(a
);
4052 flow
->metadata
&= ~metadata
->mask
;
4053 flow
->metadata
|= metadata
->metadata
& metadata
->mask
;
4057 /* Not implemented yet. */
4060 case OFPACT_GOTO_TABLE
: {
4061 struct ofpact_goto_table
*ogt
= ofpact_get_GOTO_TABLE(a
);
4063 /* Allow ctx->table_id == TBL_INTERNAL, which will be greater
4064 * than ogt->table_id. This is to allow goto_table actions that
4065 * triggered recirculation: ctx->table_id will be TBL_INTERNAL
4066 * after recirculation. */
4067 ovs_assert(ctx
->table_id
== TBL_INTERNAL
4068 || ctx
->table_id
< ogt
->table_id
);
4069 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
,
4070 ogt
->table_id
, true, true);
4075 xlate_sample_action(ctx
, ofpact_get_SAMPLE(a
));
4082 xlate_in_init(struct xlate_in
*xin
, struct ofproto_dpif
*ofproto
,
4083 const struct flow
*flow
, ofp_port_t in_port
,
4084 struct rule_dpif
*rule
, uint16_t tcp_flags
,
4085 const struct ofpbuf
*packet
)
4087 xin
->ofproto
= ofproto
;
4089 xin
->flow
.in_port
.ofp_port
= in_port
;
4090 xin
->flow
.actset_output
= OFPP_UNSET
;
4091 xin
->packet
= packet
;
4092 xin
->may_learn
= packet
!= NULL
;
4095 xin
->ofpacts
= NULL
;
4096 xin
->ofpacts_len
= 0;
4097 xin
->tcp_flags
= tcp_flags
;
4098 xin
->resubmit_hook
= NULL
;
4099 xin
->report_hook
= NULL
;
4100 xin
->resubmit_stats
= NULL
;
4101 xin
->skip_wildcards
= false;
4102 xin
->odp_actions
= NULL
;
4106 xlate_out_uninit(struct xlate_out
*xout
)
4108 if (xout
&& xout
->odp_actions
== &xout
->odp_actions_buf
) {
4109 ofpbuf_uninit(xout
->odp_actions
);
4113 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
4114 * into datapath actions, using 'ctx', and discards the datapath actions. */
4116 xlate_actions_for_side_effects(struct xlate_in
*xin
)
4118 struct xlate_out xout
;
4120 xlate_actions(xin
, &xout
);
4121 xlate_out_uninit(&xout
);
4125 xlate_out_copy(struct xlate_out
*dst
, const struct xlate_out
*src
)
4128 dst
->slow
= src
->slow
;
4129 dst
->has_learn
= src
->has_learn
;
4130 dst
->has_normal
= src
->has_normal
;
4131 dst
->has_fin_timeout
= src
->has_fin_timeout
;
4132 dst
->nf_output_iface
= src
->nf_output_iface
;
4133 dst
->mirrors
= src
->mirrors
;
4135 dst
->odp_actions
= &dst
->odp_actions_buf
;
4136 ofpbuf_use_stub(dst
->odp_actions
, dst
->odp_actions_stub
,
4137 sizeof dst
->odp_actions_stub
);
4138 ofpbuf_put(dst
->odp_actions
, ofpbuf_data(src
->odp_actions
),
4139 ofpbuf_size(src
->odp_actions
));
4142 static struct skb_priority_to_dscp
*
4143 get_skb_priority(const struct xport
*xport
, uint32_t skb_priority
)
4145 struct skb_priority_to_dscp
*pdscp
;
4148 hash
= hash_int(skb_priority
, 0);
4149 HMAP_FOR_EACH_IN_BUCKET (pdscp
, hmap_node
, hash
, &xport
->skb_priorities
) {
4150 if (pdscp
->skb_priority
== skb_priority
) {
4158 dscp_from_skb_priority(const struct xport
*xport
, uint32_t skb_priority
,
4161 struct skb_priority_to_dscp
*pdscp
= get_skb_priority(xport
, skb_priority
);
4162 *dscp
= pdscp
? pdscp
->dscp
: 0;
4163 return pdscp
!= NULL
;
4167 count_skb_priorities(const struct xport
*xport
)
4169 return hmap_count(&xport
->skb_priorities
);
4173 clear_skb_priorities(struct xport
*xport
)
4175 struct skb_priority_to_dscp
*pdscp
, *next
;
4177 HMAP_FOR_EACH_SAFE (pdscp
, next
, hmap_node
, &xport
->skb_priorities
) {
4178 hmap_remove(&xport
->skb_priorities
, &pdscp
->hmap_node
);
4184 actions_output_to_local_port(const struct xlate_ctx
*ctx
)
4186 odp_port_t local_odp_port
= ofp_port_to_odp_port(ctx
->xbridge
, OFPP_LOCAL
);
4187 const struct nlattr
*a
;
4190 NL_ATTR_FOR_EACH_UNSAFE (a
, left
, ofpbuf_data(ctx
->xout
->odp_actions
),
4191 ofpbuf_size(ctx
->xout
->odp_actions
)) {
4192 if (nl_attr_type(a
) == OVS_ACTION_ATTR_OUTPUT
4193 && nl_attr_get_odp_port(a
) == local_odp_port
) {
4200 #if defined(__linux__)
4201 /* Returns the maximum number of packets that the Linux kernel is willing to
4202 * queue up internally to certain kinds of software-implemented ports, or the
4203 * default (and rarely modified) value if it cannot be determined. */
4205 netdev_max_backlog(void)
4207 static struct ovsthread_once once
= OVSTHREAD_ONCE_INITIALIZER
;
4208 static int max_backlog
= 1000; /* The normal default value. */
4210 if (ovsthread_once_start(&once
)) {
4211 static const char filename
[] = "/proc/sys/net/core/netdev_max_backlog";
4215 stream
= fopen(filename
, "r");
4217 VLOG_WARN("%s: open failed (%s)", filename
, ovs_strerror(errno
));
4219 if (fscanf(stream
, "%d", &n
) != 1) {
4220 VLOG_WARN("%s: read error", filename
);
4221 } else if (n
<= 100) {
4222 VLOG_WARN("%s: unexpectedly small value %d", filename
, n
);
4228 ovsthread_once_done(&once
);
4230 VLOG_DBG("%s: using %d max_backlog", filename
, max_backlog
);
4236 /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in
4239 count_output_actions(const struct ofpbuf
*odp_actions
)
4241 const struct nlattr
*a
;
4245 NL_ATTR_FOR_EACH_UNSAFE (a
, left
, ofpbuf_data(odp_actions
),
4246 ofpbuf_size(odp_actions
)) {
4247 if (a
->nla_type
== OVS_ACTION_ATTR_OUTPUT
) {
4253 #endif /* defined(__linux__) */
4255 /* Returns true if 'odp_actions' contains more output actions than the datapath
4256 * can reliably handle in one go. On Linux, this is the value of the
4257 * net.core.netdev_max_backlog sysctl, which limits the maximum number of
4258 * packets that the kernel is willing to queue up for processing while the
4259 * datapath is processing a set of actions. */
4261 too_many_output_actions(const struct ofpbuf
*odp_actions OVS_UNUSED
)
4264 return (ofpbuf_size(odp_actions
) / NL_A_U32_SIZE
> netdev_max_backlog()
4265 && count_output_actions(odp_actions
) > netdev_max_backlog());
4267 /* OSes other than Linux might have similar limits, but we don't know how
4268 * to determine them.*/
4273 /* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
4274 * into datapath actions in 'odp_actions', using 'ctx'.
4276 * The caller must take responsibility for eventually freeing 'xout', with
4277 * xlate_out_uninit(). */
4279 xlate_actions(struct xlate_in
*xin
, struct xlate_out
*xout
)
4281 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
4282 struct flow_wildcards
*wc
= &xout
->wc
;
4283 struct flow
*flow
= &xin
->flow
;
4284 struct rule_dpif
*rule
= NULL
;
4286 enum slow_path_reason special
;
4287 const struct ofpact
*ofpacts
;
4288 struct xport
*in_port
;
4289 struct flow orig_flow
;
4290 struct xlate_ctx ctx
;
4295 COVERAGE_INC(xlate_actions
);
4297 /* Flow initialization rules:
4298 * - 'base_flow' must match the kernel's view of the packet at the
4299 * time that action processing starts. 'flow' represents any
4300 * transformations we wish to make through actions.
4301 * - By default 'base_flow' and 'flow' are the same since the input
4302 * packet matches the output before any actions are applied.
4303 * - When using VLAN splinters, 'base_flow''s VLAN is set to the value
4304 * of the received packet as seen by the kernel. If we later output
4305 * to another device without any modifications this will cause us to
4306 * insert a new tag since the original one was stripped off by the
4308 * - Tunnel metadata as received is retained in 'flow'. This allows
4309 * tunnel metadata matching also in later tables.
4310 * Since a kernel action for setting the tunnel metadata will only be
4311 * generated with actual tunnel output, changing the tunnel metadata
4312 * values in 'flow' (such as tun_id) will only have effect with a later
4313 * tunnel output action.
4314 * - Tunnel 'base_flow' is completely cleared since that is what the
4315 * kernel does. If we wish to maintain the original values an action
4316 * needs to be generated. */
4321 ctx
.xout
->has_learn
= false;
4322 ctx
.xout
->has_normal
= false;
4323 ctx
.xout
->has_fin_timeout
= false;
4324 ctx
.xout
->nf_output_iface
= NF_OUT_DROP
;
4325 ctx
.xout
->mirrors
= 0;
4327 xout
->odp_actions
= xin
->odp_actions
;
4328 if (!xout
->odp_actions
) {
4329 xout
->odp_actions
= &xout
->odp_actions_buf
;
4330 ofpbuf_use_stub(xout
->odp_actions
, xout
->odp_actions_stub
,
4331 sizeof xout
->odp_actions_stub
);
4333 ofpbuf_reserve(xout
->odp_actions
, NL_A_U32_SIZE
);
4335 ctx
.xbridge
= xbridge_lookup(xcfg
, xin
->ofproto
);
4340 ctx
.rule
= xin
->rule
;
4342 ctx
.base_flow
= *flow
;
4343 memset(&ctx
.base_flow
.tunnel
, 0, sizeof ctx
.base_flow
.tunnel
);
4344 ctx
.orig_tunnel_ip_dst
= flow
->tunnel
.ip_dst
;
4346 flow_wildcards_init_catchall(wc
);
4347 memset(&wc
->masks
.in_port
, 0xff, sizeof wc
->masks
.in_port
);
4348 memset(&wc
->masks
.dl_type
, 0xff, sizeof wc
->masks
.dl_type
);
4349 if (is_ip_any(flow
)) {
4350 wc
->masks
.nw_frag
|= FLOW_NW_FRAG_MASK
;
4352 is_icmp
= is_icmpv4(flow
) || is_icmpv6(flow
);
4354 tnl_may_send
= tnl_xlate_init(&ctx
.base_flow
, flow
, wc
);
4355 if (ctx
.xbridge
->netflow
) {
4356 netflow_mask_wc(flow
, wc
);
4361 ctx
.in_group
= false;
4362 ctx
.orig_skb_priority
= flow
->skb_priority
;
4365 ctx
.use_recirc
= false;
4366 ctx
.was_mpls
= false;
4368 if (!xin
->ofpacts
&& !ctx
.rule
) {
4369 rule
= rule_dpif_lookup(ctx
.xbridge
->ofproto
, flow
,
4370 xin
->skip_wildcards
? NULL
: wc
,
4371 ctx
.xin
->xcache
!= NULL
,
4372 ctx
.xin
->resubmit_stats
, &ctx
.table_id
);
4373 if (ctx
.xin
->resubmit_stats
) {
4374 rule_dpif_credit_stats(rule
, ctx
.xin
->resubmit_stats
);
4376 if (ctx
.xin
->xcache
) {
4377 struct xc_entry
*entry
;
4379 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_RULE
);
4380 entry
->u
.rule
= rule
;
4384 if (OVS_UNLIKELY(ctx
.xin
->resubmit_hook
)) {
4385 ctx
.xin
->resubmit_hook(ctx
.xin
, rule
, 0);
4388 xout
->fail_open
= ctx
.rule
&& rule_dpif_is_fail_open(ctx
.rule
);
4391 ofpacts
= xin
->ofpacts
;
4392 ofpacts_len
= xin
->ofpacts_len
;
4393 } else if (ctx
.rule
) {
4394 const struct rule_actions
*actions
= rule_dpif_get_actions(ctx
.rule
);
4396 ofpacts
= actions
->ofpacts
;
4397 ofpacts_len
= actions
->ofpacts_len
;
4402 ofpbuf_use_stub(&ctx
.stack
, ctx
.init_stack
, sizeof ctx
.init_stack
);
4404 ctx
.action_set_has_group
= false;
4405 ofpbuf_use_stub(&ctx
.action_set
,
4406 ctx
.action_set_stub
, sizeof ctx
.action_set_stub
);
4408 if (mbridge_has_mirrors(ctx
.xbridge
->mbridge
)) {
4409 /* Do this conditionally because the copy is expensive enough that it
4410 * shows up in profiles. */
4414 in_port
= get_ofp_port(ctx
.xbridge
, flow
->in_port
.ofp_port
);
4415 if (in_port
&& in_port
->is_tunnel
) {
4416 if (ctx
.xin
->resubmit_stats
) {
4417 netdev_vport_inc_rx(in_port
->netdev
, ctx
.xin
->resubmit_stats
);
4419 bfd_account_rx(in_port
->bfd
, ctx
.xin
->resubmit_stats
);
4422 if (ctx
.xin
->xcache
) {
4423 struct xc_entry
*entry
;
4425 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_NETDEV
);
4426 entry
->u
.dev
.rx
= netdev_ref(in_port
->netdev
);
4427 entry
->u
.dev
.bfd
= bfd_ref(in_port
->bfd
);
4431 special
= process_special(&ctx
, flow
, in_port
, ctx
.xin
->packet
);
4433 ctx
.xout
->slow
|= special
;
4435 size_t sample_actions_len
;
4437 if (flow
->in_port
.ofp_port
4438 != vsp_realdev_to_vlandev(ctx
.xbridge
->ofproto
,
4439 flow
->in_port
.ofp_port
,
4441 ctx
.base_flow
.vlan_tci
= 0;
4444 add_sflow_action(&ctx
);
4445 add_ipfix_action(&ctx
);
4446 sample_actions_len
= ofpbuf_size(ctx
.xout
->odp_actions
);
4448 if (tnl_may_send
&& (!in_port
|| may_receive(in_port
, &ctx
))) {
4449 do_xlate_actions(ofpacts
, ofpacts_len
, &ctx
);
4451 /* We've let OFPP_NORMAL and the learning action look at the
4452 * packet, so drop it now if forwarding is disabled. */
4453 if (in_port
&& (!xport_stp_forward_state(in_port
) ||
4454 !xport_rstp_forward_state(in_port
))) {
4455 ofpbuf_set_size(ctx
.xout
->odp_actions
, sample_actions_len
);
4459 if (ofpbuf_size(&ctx
.action_set
)) {
4460 xlate_action_set(&ctx
);
4463 if (ctx
.xbridge
->has_in_band
4464 && in_band_must_output_to_local_port(flow
)
4465 && !actions_output_to_local_port(&ctx
)) {
4466 compose_output_action(&ctx
, OFPP_LOCAL
);
4469 fix_sflow_action(&ctx
);
4471 if (mbridge_has_mirrors(ctx
.xbridge
->mbridge
)) {
4472 add_mirror_actions(&ctx
, &orig_flow
);
4476 if (nl_attr_oversized(ofpbuf_size(ctx
.xout
->odp_actions
))) {
4477 /* These datapath actions are too big for a Netlink attribute, so we
4478 * can't hand them to the kernel directly. dpif_execute() can execute
4479 * them one by one with help, so just mark the result as SLOW_ACTION to
4480 * prevent the flow from being installed. */
4481 COVERAGE_INC(xlate_actions_oversize
);
4482 ctx
.xout
->slow
|= SLOW_ACTION
;
4483 } else if (too_many_output_actions(ctx
.xout
->odp_actions
)) {
4484 COVERAGE_INC(xlate_actions_too_many_output
);
4485 ctx
.xout
->slow
|= SLOW_ACTION
;
4488 if (mbridge_has_mirrors(ctx
.xbridge
->mbridge
)) {
4489 if (ctx
.xin
->resubmit_stats
) {
4490 mirror_update_stats(ctx
.xbridge
->mbridge
, xout
->mirrors
,
4491 ctx
.xin
->resubmit_stats
->n_packets
,
4492 ctx
.xin
->resubmit_stats
->n_bytes
);
4494 if (ctx
.xin
->xcache
) {
4495 struct xc_entry
*entry
;
4497 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_MIRROR
);
4498 entry
->u
.mirror
.mbridge
= mbridge_ref(ctx
.xbridge
->mbridge
);
4499 entry
->u
.mirror
.mirrors
= xout
->mirrors
;
4503 if (ctx
.xbridge
->netflow
) {
4504 /* Only update netflow if we don't have controller flow. We don't
4505 * report NetFlow expiration messages for such facets because they
4506 * are just part of the control logic for the network, not real
4508 if (ofpacts_len
== 0
4509 || ofpacts
->type
!= OFPACT_CONTROLLER
4510 || ofpact_next(ofpacts
) < ofpact_end(ofpacts
, ofpacts_len
)) {
4511 if (ctx
.xin
->resubmit_stats
) {
4512 netflow_flow_update(ctx
.xbridge
->netflow
, flow
,
4513 xout
->nf_output_iface
,
4514 ctx
.xin
->resubmit_stats
);
4516 if (ctx
.xin
->xcache
) {
4517 struct xc_entry
*entry
;
4519 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_NETFLOW
);
4520 entry
->u
.nf
.netflow
= netflow_ref(ctx
.xbridge
->netflow
);
4521 entry
->u
.nf
.flow
= xmemdup(flow
, sizeof *flow
);
4522 entry
->u
.nf
.iface
= xout
->nf_output_iface
;
4527 ofpbuf_uninit(&ctx
.stack
);
4528 ofpbuf_uninit(&ctx
.action_set
);
4530 /* Clear the metadata and register wildcard masks, because we won't
4531 * use non-header fields as part of the cache. */
4532 flow_wildcards_clear_non_packet_fields(wc
);
4534 /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses
4535 * the low 8 bits of the 16-bit tp_src and tp_dst members to represent
4536 * these fields. The datapath interface, on the other hand, represents
4537 * them with just 8 bits each. This means that if the high 8 bits of the
4538 * masks for these fields somehow become set, then they will get chopped
4539 * off by a round trip through the datapath, and revalidation will spot
4540 * that as an inconsistency and delete the flow. Avoid the problem here by
4541 * making sure that only the low 8 bits of either field can be unwildcarded
4545 wc
->masks
.tp_src
&= htons(UINT8_MAX
);
4546 wc
->masks
.tp_dst
&= htons(UINT8_MAX
);
4550 /* Sends 'packet' out 'ofport'.
4551 * May modify 'packet'.
4552 * Returns 0 if successful, otherwise a positive errno value. */
4554 xlate_send_packet(const struct ofport_dpif
*ofport
, struct ofpbuf
*packet
)
4556 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
4557 struct xport
*xport
;
4558 struct ofpact_output output
;
4561 ofpact_init(&output
.ofpact
, OFPACT_OUTPUT
, sizeof output
);
4562 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
4563 flow_extract(packet
, NULL
, &flow
);
4564 flow
.in_port
.ofp_port
= OFPP_NONE
;
4566 xport
= xport_lookup(xcfg
, ofport
);
4570 output
.port
= xport
->ofp_port
;
4573 return ofproto_dpif_execute_actions(xport
->xbridge
->ofproto
, &flow
, NULL
,
4574 &output
.ofpact
, sizeof output
,
4578 struct xlate_cache
*
4579 xlate_cache_new(void)
4581 struct xlate_cache
*xcache
= xmalloc(sizeof *xcache
);
4583 ofpbuf_init(&xcache
->entries
, 512);
4587 static struct xc_entry
*
4588 xlate_cache_add_entry(struct xlate_cache
*xcache
, enum xc_type type
)
4590 struct xc_entry
*entry
;
4592 entry
= ofpbuf_put_zeros(&xcache
->entries
, sizeof *entry
);
4599 xlate_cache_netdev(struct xc_entry
*entry
, const struct dpif_flow_stats
*stats
)
4601 if (entry
->u
.dev
.tx
) {
4602 netdev_vport_inc_tx(entry
->u
.dev
.tx
, stats
);
4604 if (entry
->u
.dev
.rx
) {
4605 netdev_vport_inc_rx(entry
->u
.dev
.rx
, stats
);
4607 if (entry
->u
.dev
.bfd
) {
4608 bfd_account_rx(entry
->u
.dev
.bfd
, stats
);
4613 xlate_cache_normal(struct ofproto_dpif
*ofproto
, struct flow
*flow
, int vlan
)
4615 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
4616 struct xbridge
*xbridge
;
4617 struct xbundle
*xbundle
;
4618 struct flow_wildcards wc
;
4620 xbridge
= xbridge_lookup(xcfg
, ofproto
);
4625 xbundle
= lookup_input_bundle(xbridge
, flow
->in_port
.ofp_port
, false,
4631 update_learning_table(xbridge
, flow
, &wc
, vlan
, xbundle
);
4634 /* Push stats and perform side effects of flow translation. */
4636 xlate_push_stats(struct xlate_cache
*xcache
,
4637 const struct dpif_flow_stats
*stats
)
4639 struct xc_entry
*entry
;
4640 struct ofpbuf entries
= xcache
->entries
;
4641 uint8_t dmac
[ETH_ADDR_LEN
];
4643 if (!stats
->n_packets
) {
4647 XC_ENTRY_FOR_EACH (entry
, entries
, xcache
) {
4648 switch (entry
->type
) {
4650 rule_dpif_credit_stats(entry
->u
.rule
, stats
);
4653 bond_account(entry
->u
.bond
.bond
, entry
->u
.bond
.flow
,
4654 entry
->u
.bond
.vid
, stats
->n_bytes
);
4657 xlate_cache_netdev(entry
, stats
);
4660 netflow_flow_update(entry
->u
.nf
.netflow
, entry
->u
.nf
.flow
,
4661 entry
->u
.nf
.iface
, stats
);
4664 mirror_update_stats(entry
->u
.mirror
.mbridge
,
4665 entry
->u
.mirror
.mirrors
,
4666 stats
->n_packets
, stats
->n_bytes
);
4669 ofproto_dpif_flow_mod(entry
->u
.learn
.ofproto
, entry
->u
.learn
.fm
);
4672 xlate_cache_normal(entry
->u
.normal
.ofproto
, entry
->u
.normal
.flow
,
4673 entry
->u
.normal
.vlan
);
4675 case XC_FIN_TIMEOUT
:
4676 xlate_fin_timeout__(entry
->u
.fin
.rule
, stats
->tcp_flags
,
4677 entry
->u
.fin
.idle
, entry
->u
.fin
.hard
);
4680 group_dpif_credit_stats(entry
->u
.group
.group
, entry
->u
.group
.bucket
,
4684 /* Lookup arp to avoid arp timeout. */
4685 tnl_arp_lookup(entry
->u
.tnl_arp_cache
.br_name
, entry
->u
.tnl_arp_cache
.d_ip
, dmac
);
4694 xlate_dev_unref(struct xc_entry
*entry
)
4696 if (entry
->u
.dev
.tx
) {
4697 netdev_close(entry
->u
.dev
.tx
);
4699 if (entry
->u
.dev
.rx
) {
4700 netdev_close(entry
->u
.dev
.rx
);
4702 if (entry
->u
.dev
.bfd
) {
4703 bfd_unref(entry
->u
.dev
.bfd
);
4708 xlate_cache_clear_netflow(struct netflow
*netflow
, struct flow
*flow
)
4710 netflow_flow_clear(netflow
, flow
);
4711 netflow_unref(netflow
);
4716 xlate_cache_clear(struct xlate_cache
*xcache
)
4718 struct xc_entry
*entry
;
4719 struct ofpbuf entries
;
4725 XC_ENTRY_FOR_EACH (entry
, entries
, xcache
) {
4726 switch (entry
->type
) {
4728 rule_dpif_unref(entry
->u
.rule
);
4731 free(entry
->u
.bond
.flow
);
4732 bond_unref(entry
->u
.bond
.bond
);
4735 xlate_dev_unref(entry
);
4738 xlate_cache_clear_netflow(entry
->u
.nf
.netflow
, entry
->u
.nf
.flow
);
4741 mbridge_unref(entry
->u
.mirror
.mbridge
);
4744 free(entry
->u
.learn
.fm
);
4745 ofpbuf_delete(entry
->u
.learn
.ofpacts
);
4748 free(entry
->u
.normal
.flow
);
4750 case XC_FIN_TIMEOUT
:
4751 /* 'u.fin.rule' is always already held as a XC_RULE, which
4752 * has already released it's reference above. */
4755 group_dpif_unref(entry
->u
.group
.group
);
4764 ofpbuf_clear(&xcache
->entries
);
4768 xlate_cache_delete(struct xlate_cache
*xcache
)
4770 xlate_cache_clear(xcache
);
4771 ofpbuf_uninit(&xcache
->entries
);