1 /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 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"
34 #include "dp-packet.h"
36 #include "dynamic-string.h"
42 #include "mac-learning.h"
43 #include "mcast-snooping.h"
44 #include "meta-flow.h"
45 #include "multipath.h"
46 #include "netdev-vport.h"
49 #include "odp-execute.h"
50 #include "ofp-actions.h"
51 #include "ofproto/ofproto-dpif-ipfix.h"
52 #include "ofproto/ofproto-dpif-mirror.h"
53 #include "ofproto/ofproto-dpif-monitor.h"
54 #include "ofproto/ofproto-dpif-sflow.h"
55 #include "ofproto/ofproto-dpif.h"
56 #include "ofproto/ofproto-provider.h"
57 #include "ovs-router.h"
58 #include "tnl-ports.h"
60 #include "openvswitch/vlog.h"
62 COVERAGE_DEFINE(xlate_actions
);
63 COVERAGE_DEFINE(xlate_actions_oversize
);
64 COVERAGE_DEFINE(xlate_actions_too_many_output
);
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 /* Maximum number of resubmit actions in a flow translation, whether they are
75 * recursive or not. */
76 #define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION)
79 struct hmap_node hmap_node
; /* Node in global 'xbridges' map. */
80 struct ofproto_dpif
*ofproto
; /* Key in global 'xbridges' map. */
82 struct ovs_list xbundles
; /* Owned xbundles. */
83 struct hmap xports
; /* Indexed by ofp_port. */
85 char *name
; /* Name used in log messages. */
86 struct dpif
*dpif
; /* Datapath interface. */
87 struct mac_learning
*ml
; /* Mac learning handle. */
88 struct mcast_snooping
*ms
; /* Multicast Snooping handle. */
89 struct mbridge
*mbridge
; /* Mirroring. */
90 struct dpif_sflow
*sflow
; /* SFlow handle, or null. */
91 struct dpif_ipfix
*ipfix
; /* Ipfix handle, or null. */
92 struct netflow
*netflow
; /* Netflow handle, or null. */
93 struct stp
*stp
; /* STP or null if disabled. */
94 struct rstp
*rstp
; /* RSTP or null if disabled. */
96 bool has_in_band
; /* Bridge has in band control? */
97 bool forward_bpdu
; /* Bridge forwards STP BPDUs? */
99 /* Datapath feature support. */
100 struct dpif_backer_support support
;
104 struct hmap_node hmap_node
; /* In global 'xbundles' map. */
105 struct ofbundle
*ofbundle
; /* Key in global 'xbundles' map. */
107 struct ovs_list list_node
; /* In parent 'xbridges' list. */
108 struct xbridge
*xbridge
; /* Parent xbridge. */
110 struct ovs_list xports
; /* Contains "struct xport"s. */
112 char *name
; /* Name used in log messages. */
113 struct bond
*bond
; /* Nonnull iff more than one port. */
114 struct lacp
*lacp
; /* LACP handle or null. */
116 enum port_vlan_mode vlan_mode
; /* VLAN mode. */
117 int vlan
; /* -1=trunk port, else a 12-bit VLAN ID. */
118 unsigned long *trunks
; /* Bitmap of trunked VLANs, if 'vlan' == -1.
119 * NULL if all VLANs are trunked. */
120 bool use_priority_tags
; /* Use 802.1p tag for frames in VLAN 0? */
121 bool floodable
; /* No port has OFPUTIL_PC_NO_FLOOD set? */
125 struct hmap_node hmap_node
; /* Node in global 'xports' map. */
126 struct ofport_dpif
*ofport
; /* Key in global 'xports map. */
128 struct hmap_node ofp_node
; /* Node in parent xbridge 'xports' map. */
129 ofp_port_t ofp_port
; /* Key in parent xbridge 'xports' map. */
131 odp_port_t odp_port
; /* Datapath port number or ODPP_NONE. */
133 struct ovs_list bundle_node
; /* In parent xbundle (if it exists). */
134 struct xbundle
*xbundle
; /* Parent xbundle or null. */
136 struct netdev
*netdev
; /* 'ofport''s netdev. */
138 struct xbridge
*xbridge
; /* Parent bridge. */
139 struct xport
*peer
; /* Patch port peer or null. */
141 enum ofputil_port_config config
; /* OpenFlow port configuration. */
142 enum ofputil_port_state state
; /* OpenFlow port state. */
143 int stp_port_no
; /* STP port number or -1 if not in use. */
144 struct rstp_port
*rstp_port
; /* RSTP port or null. */
146 struct hmap skb_priorities
; /* Map of 'skb_priority_to_dscp's. */
148 bool may_enable
; /* May be enabled in bonds. */
149 bool is_tunnel
; /* Is a tunnel port. */
151 struct cfm
*cfm
; /* CFM handle or null. */
152 struct bfd
*bfd
; /* BFD handle or null. */
153 struct lldp
*lldp
; /* LLDP handle or null. */
157 struct xlate_in
*xin
;
158 struct xlate_out
*xout
;
160 const struct xbridge
*xbridge
;
162 /* Flow tables version at the beginning of the translation. */
163 cls_version_t tables_version
;
165 /* Flow at the last commit. */
166 struct flow base_flow
;
168 /* Tunnel IP destination address as received. This is stored separately
169 * as the base_flow.tunnel is cleared on init to reflect the datapath
170 * behavior. Used to make sure not to send tunneled output to ourselves,
171 * which might lead to an infinite loop. This could happen easily
172 * if a tunnel is marked as 'ip_remote=flow', and the flow does not
173 * actually set the tun_dst field. */
174 ovs_be32 orig_tunnel_ip_dst
;
176 /* Stack for the push and pop actions. Each stack element is of type
177 * "union mf_subvalue". */
180 /* The rule that we are currently translating, or NULL. */
181 struct rule_dpif
*rule
;
183 /* Flow translation populates this with wildcards relevant in translation.
184 * When 'xin->wc' is nonnull, this is the same pointer. When 'xin->wc' is
185 * null, this is a pointer to uninitialized scratch memory. This allows
186 * code to blindly write to 'ctx->wc' without worrying about whether the
187 * caller really wants wildcards. */
188 struct flow_wildcards
*wc
;
190 /* Output buffer for datapath actions. When 'xin->odp_actions' is nonnull,
191 * this is the same pointer. When 'xin->odp_actions' is null, this points
192 * to a scratch ofpbuf. This allows code to add actions to
193 * 'ctx->odp_actions' without worrying about whether the caller really
195 struct ofpbuf
*odp_actions
;
197 /* Resubmit statistics, via xlate_table_action(). */
198 int recurse
; /* Current resubmit nesting depth. */
199 int resubmits
; /* Total number of resubmits. */
200 bool in_group
; /* Currently translating ofgroup, if true. */
201 bool in_action_set
; /* Currently translating action_set, if true. */
203 uint8_t table_id
; /* OpenFlow table ID where flow was found. */
204 ovs_be64 rule_cookie
; /* Cookie of the rule being translated. */
205 uint32_t orig_skb_priority
; /* Priority when packet arrived. */
206 uint32_t sflow_n_outputs
; /* Number of output ports. */
207 odp_port_t sflow_odp_port
; /* Output port for composing sFlow action. */
208 ofp_port_t nf_output_iface
; /* Output interface index for NetFlow. */
209 bool exit
; /* No further actions should be processed. */
210 mirror_mask_t mirrors
; /* Bitmap of associated mirrors. */
212 /* These are used for non-bond recirculation. The recirculation IDs are
213 * stored in xout and must be associated with a datapath flow (ukey),
214 * otherwise they will be freed when the xout is uninitialized.
217 * Steps in Recirculation Translation
218 * ==================================
220 * At some point during translation, the code recognizes the need for
221 * recirculation. For example, recirculation is necessary when, after
222 * popping the last MPLS label, an action or a match tries to examine or
223 * modify a field that has been newly revealed following the MPLS label.
225 * The simplest part of the work to be done is to commit existing changes to
226 * the packet, which produces datapath actions corresponding to the changes,
227 * and after this, add an OVS_ACTION_ATTR_RECIRC datapath action.
229 * The main problem here is preserving state. When the datapath executes
230 * OVS_ACTION_ATTR_RECIRC, it will upcall to userspace to get a translation
231 * for the post-recirculation actions. At this point userspace has to
232 * resume the translation where it left off, which means that it has to
233 * execute the following:
235 * - The action that prompted recirculation, and any actions following
236 * it within the same flow.
238 * - If the action that prompted recirculation was invoked within a
239 * NXAST_RESUBMIT, then any actions following the resubmit. These
240 * "resubmit"s can be nested, so this has to go all the way up the
243 * - The OpenFlow 1.1+ action set.
245 * State that actions and flow table lookups can depend on, such as the
246 * following, must also be preserved:
248 * - Metadata fields (input port, registers, OF1.1+ metadata, ...).
250 * - Action set, stack
252 * - The table ID and cookie of the flow being translated at each level
253 * of the control stack (since OFPAT_CONTROLLER actions send these to
256 * Translation allows for the control of this state preservation via these
257 * members. When a need for recirculation is identified, the translation
260 * 1. Sets 'recirc_action_offset' to the current size of 'action_set'. The
261 * action set is part of what needs to be preserved, so this allows the
262 * action set and the additional state to share the 'action_set' buffer.
263 * Later steps can tell that setup for recirculation is in progress from
264 * the nonnegative value of 'recirc_action_offset'.
266 * 2. Sets 'exit' to true to tell later steps that we're exiting from the
267 * translation process.
269 * 3. Adds an OFPACT_UNROLL_XLATE action to 'action_set'. This action
270 * holds the current table ID and cookie so that they can be restored
271 * during a post-recirculation upcall translation.
273 * 4. Adds the action that prompted recirculation and any actions following
274 * it within the same flow to 'action_set', so that they can be executed
275 * during a post-recirculation upcall translation.
279 * 6. The action that prompted recirculation might be nested in a stack of
280 * nested "resubmit"s that have actions remaining. Each of these notices
281 * that we're exiting (from 'exit') and that recirculation setup is in
282 * progress (from 'recirc_action_offset') and responds by adding more
283 * OFPACT_UNROLL_XLATE actions to 'action_set', as necessary, and any
284 * actions that were yet unprocessed.
286 * The caller stores all the state produced by this process associated with
287 * the recirculation ID. For post-recirculation upcall translation, the
288 * caller passes it back in for the new translation to execute. The
289 * process yielded a set of ofpacts that can be translated directly, so it
290 * is not much of a special case at that point.
292 int recirc_action_offset
; /* Offset in 'action_set' to actions to be
293 * executed after recirculation, or -1. */
294 int last_unroll_offset
; /* Offset in 'action_set' to the latest unroll
297 /* True if a packet was but is no longer MPLS (due to an MPLS pop action).
298 * This is a trigger for recirculation in cases where translating an action
299 * or looking up a flow requires access to the fields of the packet after
300 * the MPLS label stack that was originally present. */
303 /* True if conntrack has been performed on this packet during processing
304 * on the current bridge. This is used to determine whether conntrack
305 * state from the datapath should be honored after recirculation. */
308 /* OpenFlow 1.1+ action set.
310 * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS.
311 * When translation is otherwise complete, ofpacts_execute_action_set()
312 * converts it to a set of "struct ofpact"s that can be translated into
313 * datapath actions. */
314 bool action_set_has_group
; /* Action set contains OFPACT_GROUP? */
315 struct ofpbuf action_set
; /* Action set. */
318 static void xlate_action_set(struct xlate_ctx
*ctx
);
319 static void xlate_commit_actions(struct xlate_ctx
*ctx
);
322 ctx_trigger_recirculation(struct xlate_ctx
*ctx
)
325 ctx
->recirc_action_offset
= ctx
->action_set
.size
;
329 ctx_first_recirculation_action(const struct xlate_ctx
*ctx
)
331 return ctx
->recirc_action_offset
== ctx
->action_set
.size
;
335 exit_recirculates(const struct xlate_ctx
*ctx
)
337 /* When recirculating the 'recirc_action_offset' has a non-negative value.
339 return ctx
->recirc_action_offset
>= 0;
342 static void compose_recirculate_action(struct xlate_ctx
*ctx
);
344 /* A controller may use OFPP_NONE as the ingress port to indicate that
345 * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
346 * when an input bundle is needed for validation (e.g., mirroring or
347 * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have
348 * any 'port' structs, so care must be taken when dealing with it. */
349 static struct xbundle ofpp_none_bundle
= {
351 .vlan_mode
= PORT_VLAN_TRUNK
354 /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from
355 * 'priority' (the datapath's term for QoS queue) to the dscp bits which all
356 * traffic egressing the 'ofport' with that priority should be marked with. */
357 struct skb_priority_to_dscp
{
358 struct hmap_node hmap_node
; /* Node in 'ofport_dpif''s 'skb_priorities'. */
359 uint32_t skb_priority
; /* Priority of this queue (see struct flow). */
361 uint8_t dscp
; /* DSCP bits to mark outgoing traffic with. */
377 /* xlate_cache entries hold enough information to perform the side effects of
378 * xlate_actions() for a rule, without needing to perform rule translation
379 * from scratch. The primary usage of these is to submit statistics to objects
380 * that a flow relates to, although they may be used for other effects as well
381 * (for instance, refreshing hard timeouts for learned flows). */
385 struct rule_dpif
*rule
;
392 struct netflow
*netflow
;
397 struct mbridge
*mbridge
;
398 mirror_mask_t mirrors
;
406 struct ofproto_dpif
*ofproto
;
407 struct ofputil_flow_mod
*fm
;
408 struct ofpbuf
*ofpacts
;
411 struct ofproto_dpif
*ofproto
;
416 struct rule_dpif
*rule
;
421 struct group_dpif
*group
;
422 struct ofputil_bucket
*bucket
;
425 char br_name
[IFNAMSIZ
];
431 #define XC_ENTRY_FOR_EACH(entry, entries, xcache) \
432 entries = xcache->entries; \
433 for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \
435 entry = ofpbuf_try_pull(&entries, sizeof *entry))
438 struct ofpbuf entries
;
441 /* Xlate config contains hash maps of all bridges, bundles and ports.
442 * Xcfgp contains the pointer to the current xlate configuration.
443 * When the main thread needs to change the configuration, it copies xcfgp to
444 * new_xcfg and edits new_xcfg. This enables the use of RCU locking which
445 * does not block handler and revalidator threads. */
447 struct hmap xbridges
;
448 struct hmap xbundles
;
451 static OVSRCU_TYPE(struct xlate_cfg
*) xcfgp
= OVSRCU_INITIALIZER(NULL
);
452 static struct xlate_cfg
*new_xcfg
= NULL
;
454 static bool may_receive(const struct xport
*, struct xlate_ctx
*);
455 static void do_xlate_actions(const struct ofpact
*, size_t ofpacts_len
,
457 static void xlate_normal(struct xlate_ctx
*);
458 static inline void xlate_report(struct xlate_ctx
*, const char *, ...)
459 OVS_PRINTF_FORMAT(2, 3);
460 static void xlate_table_action(struct xlate_ctx
*, ofp_port_t in_port
,
461 uint8_t table_id
, bool may_packet_in
,
462 bool honor_table_miss
);
463 static bool input_vid_is_valid(uint16_t vid
, struct xbundle
*, bool warn
);
464 static uint16_t input_vid_to_vlan(const struct xbundle
*, uint16_t vid
);
465 static void output_normal(struct xlate_ctx
*, const struct xbundle
*,
468 /* Optional bond recirculation parameter to compose_output_action(). */
469 struct xlate_bond_recirc
{
470 uint32_t recirc_id
; /* !0 Use recirculation instead of output. */
471 uint8_t hash_alg
; /* !0 Compute hash for recirc before. */
472 uint32_t hash_basis
; /* Compute hash for recirc before. */
475 static void compose_output_action(struct xlate_ctx
*, ofp_port_t ofp_port
,
476 const struct xlate_bond_recirc
*xr
);
478 static struct xbridge
*xbridge_lookup(struct xlate_cfg
*,
479 const struct ofproto_dpif
*);
480 static struct xbundle
*xbundle_lookup(struct xlate_cfg
*,
481 const struct ofbundle
*);
482 static struct xport
*xport_lookup(struct xlate_cfg
*,
483 const struct ofport_dpif
*);
484 static struct xport
*get_ofp_port(const struct xbridge
*, ofp_port_t ofp_port
);
485 static struct skb_priority_to_dscp
*get_skb_priority(const struct xport
*,
486 uint32_t skb_priority
);
487 static void clear_skb_priorities(struct xport
*);
488 static size_t count_skb_priorities(const struct xport
*);
489 static bool dscp_from_skb_priority(const struct xport
*, uint32_t skb_priority
,
492 static struct xc_entry
*xlate_cache_add_entry(struct xlate_cache
*xc
,
494 static void xlate_xbridge_init(struct xlate_cfg
*, struct xbridge
*);
495 static void xlate_xbundle_init(struct xlate_cfg
*, struct xbundle
*);
496 static void xlate_xport_init(struct xlate_cfg
*, struct xport
*);
497 static void xlate_xbridge_set(struct xbridge
*, struct dpif
*,
498 const struct mac_learning
*, struct stp
*,
499 struct rstp
*, const struct mcast_snooping
*,
500 const struct mbridge
*,
501 const struct dpif_sflow
*,
502 const struct dpif_ipfix
*,
503 const struct netflow
*,
504 bool forward_bpdu
, bool has_in_band
,
505 const struct dpif_backer_support
*);
506 static void 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
,
511 static void xlate_xport_set(struct xport
*xport
, odp_port_t odp_port
,
512 const struct netdev
*netdev
, const struct cfm
*cfm
,
513 const struct bfd
*bfd
, const struct lldp
*lldp
,
514 int stp_port_no
, const struct rstp_port
*rstp_port
,
515 enum ofputil_port_config config
,
516 enum ofputil_port_state state
, bool is_tunnel
,
518 static void xlate_xbridge_remove(struct xlate_cfg
*, struct xbridge
*);
519 static void xlate_xbundle_remove(struct xlate_cfg
*, struct xbundle
*);
520 static void xlate_xport_remove(struct xlate_cfg
*, struct xport
*);
521 static void xlate_xbridge_copy(struct xbridge
*);
522 static void xlate_xbundle_copy(struct xbridge
*, struct xbundle
*);
523 static void xlate_xport_copy(struct xbridge
*, struct xbundle
*,
525 static void xlate_xcfg_free(struct xlate_cfg
*);
528 xlate_report(struct xlate_ctx
*ctx
, const char *format
, ...)
530 if (OVS_UNLIKELY(ctx
->xin
->report_hook
)) {
533 va_start(args
, format
);
534 ctx
->xin
->report_hook(ctx
->xin
, ctx
->recurse
, format
, args
);
540 xlate_report_actions(struct xlate_ctx
*ctx
, const char *title
,
541 const struct ofpact
*ofpacts
, size_t ofpacts_len
)
543 if (OVS_UNLIKELY(ctx
->xin
->report_hook
)) {
544 struct ds s
= DS_EMPTY_INITIALIZER
;
545 ofpacts_format(ofpacts
, ofpacts_len
, &s
);
546 xlate_report(ctx
, "%s: %s", title
, ds_cstr(&s
));
552 xlate_xbridge_init(struct xlate_cfg
*xcfg
, struct xbridge
*xbridge
)
554 list_init(&xbridge
->xbundles
);
555 hmap_init(&xbridge
->xports
);
556 hmap_insert(&xcfg
->xbridges
, &xbridge
->hmap_node
,
557 hash_pointer(xbridge
->ofproto
, 0));
561 xlate_xbundle_init(struct xlate_cfg
*xcfg
, struct xbundle
*xbundle
)
563 list_init(&xbundle
->xports
);
564 list_insert(&xbundle
->xbridge
->xbundles
, &xbundle
->list_node
);
565 hmap_insert(&xcfg
->xbundles
, &xbundle
->hmap_node
,
566 hash_pointer(xbundle
->ofbundle
, 0));
570 xlate_xport_init(struct xlate_cfg
*xcfg
, struct xport
*xport
)
572 hmap_init(&xport
->skb_priorities
);
573 hmap_insert(&xcfg
->xports
, &xport
->hmap_node
,
574 hash_pointer(xport
->ofport
, 0));
575 hmap_insert(&xport
->xbridge
->xports
, &xport
->ofp_node
,
576 hash_ofp_port(xport
->ofp_port
));
580 xlate_xbridge_set(struct xbridge
*xbridge
,
582 const struct mac_learning
*ml
, struct stp
*stp
,
583 struct rstp
*rstp
, const struct mcast_snooping
*ms
,
584 const struct mbridge
*mbridge
,
585 const struct dpif_sflow
*sflow
,
586 const struct dpif_ipfix
*ipfix
,
587 const struct netflow
*netflow
,
588 bool forward_bpdu
, bool has_in_band
,
589 const struct dpif_backer_support
*support
)
591 if (xbridge
->ml
!= ml
) {
592 mac_learning_unref(xbridge
->ml
);
593 xbridge
->ml
= mac_learning_ref(ml
);
596 if (xbridge
->ms
!= ms
) {
597 mcast_snooping_unref(xbridge
->ms
);
598 xbridge
->ms
= mcast_snooping_ref(ms
);
601 if (xbridge
->mbridge
!= mbridge
) {
602 mbridge_unref(xbridge
->mbridge
);
603 xbridge
->mbridge
= mbridge_ref(mbridge
);
606 if (xbridge
->sflow
!= sflow
) {
607 dpif_sflow_unref(xbridge
->sflow
);
608 xbridge
->sflow
= dpif_sflow_ref(sflow
);
611 if (xbridge
->ipfix
!= ipfix
) {
612 dpif_ipfix_unref(xbridge
->ipfix
);
613 xbridge
->ipfix
= dpif_ipfix_ref(ipfix
);
616 if (xbridge
->stp
!= stp
) {
617 stp_unref(xbridge
->stp
);
618 xbridge
->stp
= stp_ref(stp
);
621 if (xbridge
->rstp
!= rstp
) {
622 rstp_unref(xbridge
->rstp
);
623 xbridge
->rstp
= rstp_ref(rstp
);
626 if (xbridge
->netflow
!= netflow
) {
627 netflow_unref(xbridge
->netflow
);
628 xbridge
->netflow
= netflow_ref(netflow
);
631 xbridge
->dpif
= dpif
;
632 xbridge
->forward_bpdu
= forward_bpdu
;
633 xbridge
->has_in_band
= has_in_band
;
634 xbridge
->support
= *support
;
638 xlate_xbundle_set(struct xbundle
*xbundle
,
639 enum port_vlan_mode vlan_mode
, int vlan
,
640 unsigned long *trunks
, bool use_priority_tags
,
641 const struct bond
*bond
, const struct lacp
*lacp
,
644 ovs_assert(xbundle
->xbridge
);
646 xbundle
->vlan_mode
= vlan_mode
;
647 xbundle
->vlan
= vlan
;
648 xbundle
->trunks
= trunks
;
649 xbundle
->use_priority_tags
= use_priority_tags
;
650 xbundle
->floodable
= floodable
;
652 if (xbundle
->bond
!= bond
) {
653 bond_unref(xbundle
->bond
);
654 xbundle
->bond
= bond_ref(bond
);
657 if (xbundle
->lacp
!= lacp
) {
658 lacp_unref(xbundle
->lacp
);
659 xbundle
->lacp
= lacp_ref(lacp
);
664 xlate_xport_set(struct xport
*xport
, odp_port_t odp_port
,
665 const struct netdev
*netdev
, const struct cfm
*cfm
,
666 const struct bfd
*bfd
, const struct lldp
*lldp
, int stp_port_no
,
667 const struct rstp_port
* rstp_port
,
668 enum ofputil_port_config config
, enum ofputil_port_state state
,
669 bool is_tunnel
, bool may_enable
)
671 xport
->config
= config
;
672 xport
->state
= state
;
673 xport
->stp_port_no
= stp_port_no
;
674 xport
->is_tunnel
= is_tunnel
;
675 xport
->may_enable
= may_enable
;
676 xport
->odp_port
= odp_port
;
678 if (xport
->rstp_port
!= rstp_port
) {
679 rstp_port_unref(xport
->rstp_port
);
680 xport
->rstp_port
= rstp_port_ref(rstp_port
);
683 if (xport
->cfm
!= cfm
) {
684 cfm_unref(xport
->cfm
);
685 xport
->cfm
= cfm_ref(cfm
);
688 if (xport
->bfd
!= bfd
) {
689 bfd_unref(xport
->bfd
);
690 xport
->bfd
= bfd_ref(bfd
);
693 if (xport
->lldp
!= lldp
) {
694 lldp_unref(xport
->lldp
);
695 xport
->lldp
= lldp_ref(lldp
);
698 if (xport
->netdev
!= netdev
) {
699 netdev_close(xport
->netdev
);
700 xport
->netdev
= netdev_ref(netdev
);
705 xlate_xbridge_copy(struct xbridge
*xbridge
)
707 struct xbundle
*xbundle
;
709 struct xbridge
*new_xbridge
= xzalloc(sizeof *xbridge
);
710 new_xbridge
->ofproto
= xbridge
->ofproto
;
711 new_xbridge
->name
= xstrdup(xbridge
->name
);
712 xlate_xbridge_init(new_xcfg
, new_xbridge
);
714 xlate_xbridge_set(new_xbridge
,
715 xbridge
->dpif
, xbridge
->ml
, xbridge
->stp
,
716 xbridge
->rstp
, xbridge
->ms
, xbridge
->mbridge
,
717 xbridge
->sflow
, xbridge
->ipfix
, xbridge
->netflow
,
718 xbridge
->forward_bpdu
, xbridge
->has_in_band
,
720 LIST_FOR_EACH (xbundle
, list_node
, &xbridge
->xbundles
) {
721 xlate_xbundle_copy(new_xbridge
, xbundle
);
724 /* Copy xports which are not part of a xbundle */
725 HMAP_FOR_EACH (xport
, ofp_node
, &xbridge
->xports
) {
726 if (!xport
->xbundle
) {
727 xlate_xport_copy(new_xbridge
, NULL
, xport
);
733 xlate_xbundle_copy(struct xbridge
*xbridge
, struct xbundle
*xbundle
)
736 struct xbundle
*new_xbundle
= xzalloc(sizeof *xbundle
);
737 new_xbundle
->ofbundle
= xbundle
->ofbundle
;
738 new_xbundle
->xbridge
= xbridge
;
739 new_xbundle
->name
= xstrdup(xbundle
->name
);
740 xlate_xbundle_init(new_xcfg
, new_xbundle
);
742 xlate_xbundle_set(new_xbundle
, xbundle
->vlan_mode
,
743 xbundle
->vlan
, xbundle
->trunks
,
744 xbundle
->use_priority_tags
, xbundle
->bond
, xbundle
->lacp
,
746 LIST_FOR_EACH (xport
, bundle_node
, &xbundle
->xports
) {
747 xlate_xport_copy(xbridge
, new_xbundle
, xport
);
752 xlate_xport_copy(struct xbridge
*xbridge
, struct xbundle
*xbundle
,
755 struct skb_priority_to_dscp
*pdscp
, *new_pdscp
;
756 struct xport
*new_xport
= xzalloc(sizeof *xport
);
757 new_xport
->ofport
= xport
->ofport
;
758 new_xport
->ofp_port
= xport
->ofp_port
;
759 new_xport
->xbridge
= xbridge
;
760 xlate_xport_init(new_xcfg
, new_xport
);
762 xlate_xport_set(new_xport
, xport
->odp_port
, xport
->netdev
, xport
->cfm
,
763 xport
->bfd
, xport
->lldp
, xport
->stp_port_no
,
764 xport
->rstp_port
, xport
->config
, xport
->state
,
765 xport
->is_tunnel
, xport
->may_enable
);
768 struct xport
*peer
= xport_lookup(new_xcfg
, xport
->peer
->ofport
);
770 new_xport
->peer
= peer
;
771 new_xport
->peer
->peer
= new_xport
;
776 new_xport
->xbundle
= xbundle
;
777 list_insert(&new_xport
->xbundle
->xports
, &new_xport
->bundle_node
);
780 HMAP_FOR_EACH (pdscp
, hmap_node
, &xport
->skb_priorities
) {
781 new_pdscp
= xmalloc(sizeof *pdscp
);
782 new_pdscp
->skb_priority
= pdscp
->skb_priority
;
783 new_pdscp
->dscp
= pdscp
->dscp
;
784 hmap_insert(&new_xport
->skb_priorities
, &new_pdscp
->hmap_node
,
785 hash_int(new_pdscp
->skb_priority
, 0));
789 /* Sets the current xlate configuration to new_xcfg and frees the old xlate
790 * configuration in xcfgp.
792 * This needs to be called after editing the xlate configuration.
794 * Functions that edit the new xlate configuration are
795 * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove.
801 * edit_xlate_configuration();
803 * xlate_txn_commit(); */
805 xlate_txn_commit(void)
807 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
809 ovsrcu_set(&xcfgp
, new_xcfg
);
810 ovsrcu_synchronize();
811 xlate_xcfg_free(xcfg
);
815 /* Copies the current xlate configuration in xcfgp to new_xcfg.
817 * This needs to be called prior to editing the xlate configuration. */
819 xlate_txn_start(void)
821 struct xbridge
*xbridge
;
822 struct xlate_cfg
*xcfg
;
824 ovs_assert(!new_xcfg
);
826 new_xcfg
= xmalloc(sizeof *new_xcfg
);
827 hmap_init(&new_xcfg
->xbridges
);
828 hmap_init(&new_xcfg
->xbundles
);
829 hmap_init(&new_xcfg
->xports
);
831 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
836 HMAP_FOR_EACH (xbridge
, hmap_node
, &xcfg
->xbridges
) {
837 xlate_xbridge_copy(xbridge
);
843 xlate_xcfg_free(struct xlate_cfg
*xcfg
)
845 struct xbridge
*xbridge
, *next_xbridge
;
851 HMAP_FOR_EACH_SAFE (xbridge
, next_xbridge
, hmap_node
, &xcfg
->xbridges
) {
852 xlate_xbridge_remove(xcfg
, xbridge
);
855 hmap_destroy(&xcfg
->xbridges
);
856 hmap_destroy(&xcfg
->xbundles
);
857 hmap_destroy(&xcfg
->xports
);
862 xlate_ofproto_set(struct ofproto_dpif
*ofproto
, const char *name
,
864 const struct mac_learning
*ml
, struct stp
*stp
,
865 struct rstp
*rstp
, const struct mcast_snooping
*ms
,
866 const struct mbridge
*mbridge
,
867 const struct dpif_sflow
*sflow
,
868 const struct dpif_ipfix
*ipfix
,
869 const struct netflow
*netflow
,
870 bool forward_bpdu
, bool has_in_band
,
871 const struct dpif_backer_support
*support
)
873 struct xbridge
*xbridge
;
875 ovs_assert(new_xcfg
);
877 xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
879 xbridge
= xzalloc(sizeof *xbridge
);
880 xbridge
->ofproto
= ofproto
;
882 xlate_xbridge_init(new_xcfg
, xbridge
);
886 xbridge
->name
= xstrdup(name
);
888 xlate_xbridge_set(xbridge
, dpif
, ml
, stp
, rstp
, ms
, mbridge
, sflow
, ipfix
,
889 netflow
, forward_bpdu
, has_in_band
, support
);
893 xlate_xbridge_remove(struct xlate_cfg
*xcfg
, struct xbridge
*xbridge
)
895 struct xbundle
*xbundle
, *next_xbundle
;
896 struct xport
*xport
, *next_xport
;
902 HMAP_FOR_EACH_SAFE (xport
, next_xport
, ofp_node
, &xbridge
->xports
) {
903 xlate_xport_remove(xcfg
, xport
);
906 LIST_FOR_EACH_SAFE (xbundle
, next_xbundle
, list_node
, &xbridge
->xbundles
) {
907 xlate_xbundle_remove(xcfg
, xbundle
);
910 hmap_remove(&xcfg
->xbridges
, &xbridge
->hmap_node
);
911 mac_learning_unref(xbridge
->ml
);
912 mcast_snooping_unref(xbridge
->ms
);
913 mbridge_unref(xbridge
->mbridge
);
914 dpif_sflow_unref(xbridge
->sflow
);
915 dpif_ipfix_unref(xbridge
->ipfix
);
916 stp_unref(xbridge
->stp
);
917 rstp_unref(xbridge
->rstp
);
918 hmap_destroy(&xbridge
->xports
);
924 xlate_remove_ofproto(struct ofproto_dpif
*ofproto
)
926 struct xbridge
*xbridge
;
928 ovs_assert(new_xcfg
);
930 xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
931 xlate_xbridge_remove(new_xcfg
, xbridge
);
935 xlate_bundle_set(struct ofproto_dpif
*ofproto
, struct ofbundle
*ofbundle
,
936 const char *name
, enum port_vlan_mode vlan_mode
, int vlan
,
937 unsigned long *trunks
, bool use_priority_tags
,
938 const struct bond
*bond
, const struct lacp
*lacp
,
941 struct xbundle
*xbundle
;
943 ovs_assert(new_xcfg
);
945 xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
947 xbundle
= xzalloc(sizeof *xbundle
);
948 xbundle
->ofbundle
= ofbundle
;
949 xbundle
->xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
951 xlate_xbundle_init(new_xcfg
, xbundle
);
955 xbundle
->name
= xstrdup(name
);
957 xlate_xbundle_set(xbundle
, vlan_mode
, vlan
, trunks
,
958 use_priority_tags
, bond
, lacp
, floodable
);
962 xlate_xbundle_remove(struct xlate_cfg
*xcfg
, struct xbundle
*xbundle
)
970 LIST_FOR_EACH_POP (xport
, bundle_node
, &xbundle
->xports
) {
971 xport
->xbundle
= NULL
;
974 hmap_remove(&xcfg
->xbundles
, &xbundle
->hmap_node
);
975 list_remove(&xbundle
->list_node
);
976 bond_unref(xbundle
->bond
);
977 lacp_unref(xbundle
->lacp
);
983 xlate_bundle_remove(struct ofbundle
*ofbundle
)
985 struct xbundle
*xbundle
;
987 ovs_assert(new_xcfg
);
989 xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
990 xlate_xbundle_remove(new_xcfg
, xbundle
);
994 xlate_ofport_set(struct ofproto_dpif
*ofproto
, struct ofbundle
*ofbundle
,
995 struct ofport_dpif
*ofport
, ofp_port_t ofp_port
,
996 odp_port_t odp_port
, const struct netdev
*netdev
,
997 const struct cfm
*cfm
, const struct bfd
*bfd
,
998 const struct lldp
*lldp
, struct ofport_dpif
*peer
,
999 int stp_port_no
, const struct rstp_port
*rstp_port
,
1000 const struct ofproto_port_queue
*qdscp_list
, size_t n_qdscp
,
1001 enum ofputil_port_config config
,
1002 enum ofputil_port_state state
, bool is_tunnel
,
1006 struct xport
*xport
;
1008 ovs_assert(new_xcfg
);
1010 xport
= xport_lookup(new_xcfg
, ofport
);
1012 xport
= xzalloc(sizeof *xport
);
1013 xport
->ofport
= ofport
;
1014 xport
->xbridge
= xbridge_lookup(new_xcfg
, ofproto
);
1015 xport
->ofp_port
= ofp_port
;
1017 xlate_xport_init(new_xcfg
, xport
);
1020 ovs_assert(xport
->ofp_port
== ofp_port
);
1022 xlate_xport_set(xport
, odp_port
, netdev
, cfm
, bfd
, lldp
,
1023 stp_port_no
, rstp_port
, config
, state
, is_tunnel
,
1027 xport
->peer
->peer
= NULL
;
1029 xport
->peer
= xport_lookup(new_xcfg
, peer
);
1031 xport
->peer
->peer
= xport
;
1034 if (xport
->xbundle
) {
1035 list_remove(&xport
->bundle_node
);
1037 xport
->xbundle
= xbundle_lookup(new_xcfg
, ofbundle
);
1038 if (xport
->xbundle
) {
1039 list_insert(&xport
->xbundle
->xports
, &xport
->bundle_node
);
1042 clear_skb_priorities(xport
);
1043 for (i
= 0; i
< n_qdscp
; i
++) {
1044 struct skb_priority_to_dscp
*pdscp
;
1045 uint32_t skb_priority
;
1047 if (dpif_queue_to_priority(xport
->xbridge
->dpif
, qdscp_list
[i
].queue
,
1052 pdscp
= xmalloc(sizeof *pdscp
);
1053 pdscp
->skb_priority
= skb_priority
;
1054 pdscp
->dscp
= (qdscp_list
[i
].dscp
<< 2) & IP_DSCP_MASK
;
1055 hmap_insert(&xport
->skb_priorities
, &pdscp
->hmap_node
,
1056 hash_int(pdscp
->skb_priority
, 0));
1061 xlate_xport_remove(struct xlate_cfg
*xcfg
, struct xport
*xport
)
1068 xport
->peer
->peer
= NULL
;
1072 if (xport
->xbundle
) {
1073 list_remove(&xport
->bundle_node
);
1076 clear_skb_priorities(xport
);
1077 hmap_destroy(&xport
->skb_priorities
);
1079 hmap_remove(&xcfg
->xports
, &xport
->hmap_node
);
1080 hmap_remove(&xport
->xbridge
->xports
, &xport
->ofp_node
);
1082 netdev_close(xport
->netdev
);
1083 rstp_port_unref(xport
->rstp_port
);
1084 cfm_unref(xport
->cfm
);
1085 bfd_unref(xport
->bfd
);
1086 lldp_unref(xport
->lldp
);
1091 xlate_ofport_remove(struct ofport_dpif
*ofport
)
1093 struct xport
*xport
;
1095 ovs_assert(new_xcfg
);
1097 xport
= xport_lookup(new_xcfg
, ofport
);
1098 xlate_xport_remove(new_xcfg
, xport
);
1101 static struct ofproto_dpif
*
1102 xlate_lookup_ofproto_(const struct dpif_backer
*backer
, const struct flow
*flow
,
1103 ofp_port_t
*ofp_in_port
, const struct xport
**xportp
)
1105 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1106 const struct xport
*xport
;
1108 xport
= xport_lookup(xcfg
, tnl_port_should_receive(flow
)
1109 ? tnl_port_receive(flow
)
1110 : odp_port_to_ofport(backer
, flow
->in_port
.odp_port
));
1111 if (OVS_UNLIKELY(!xport
)) {
1116 *ofp_in_port
= xport
->ofp_port
;
1118 return xport
->xbridge
->ofproto
;
1121 /* Given a datapath and flow metadata ('backer', and 'flow' respectively)
1122 * returns the corresponding struct ofproto_dpif and OpenFlow port number. */
1123 struct ofproto_dpif
*
1124 xlate_lookup_ofproto(const struct dpif_backer
*backer
, const struct flow
*flow
,
1125 ofp_port_t
*ofp_in_port
)
1127 const struct xport
*xport
;
1129 return xlate_lookup_ofproto_(backer
, flow
, ofp_in_port
, &xport
);
1132 /* Given a datapath and flow metadata ('backer', and 'flow' respectively),
1133 * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the
1134 * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate
1135 * handles for those protocols if they're enabled. Caller may use the returned
1136 * pointers until quiescing, for longer term use additional references must
1139 * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto.
1142 xlate_lookup(const struct dpif_backer
*backer
, const struct flow
*flow
,
1143 struct ofproto_dpif
**ofprotop
, struct dpif_ipfix
**ipfix
,
1144 struct dpif_sflow
**sflow
, struct netflow
**netflow
,
1145 ofp_port_t
*ofp_in_port
)
1147 struct ofproto_dpif
*ofproto
;
1148 const struct xport
*xport
;
1150 ofproto
= xlate_lookup_ofproto_(backer
, flow
, ofp_in_port
, &xport
);
1157 *ofprotop
= ofproto
;
1161 *ipfix
= xport
? xport
->xbridge
->ipfix
: NULL
;
1165 *sflow
= xport
? xport
->xbridge
->sflow
: NULL
;
1169 *netflow
= xport
? xport
->xbridge
->netflow
: NULL
;
1175 static struct xbridge
*
1176 xbridge_lookup(struct xlate_cfg
*xcfg
, const struct ofproto_dpif
*ofproto
)
1178 struct hmap
*xbridges
;
1179 struct xbridge
*xbridge
;
1181 if (!ofproto
|| !xcfg
) {
1185 xbridges
= &xcfg
->xbridges
;
1187 HMAP_FOR_EACH_IN_BUCKET (xbridge
, hmap_node
, hash_pointer(ofproto
, 0),
1189 if (xbridge
->ofproto
== ofproto
) {
1196 static struct xbundle
*
1197 xbundle_lookup(struct xlate_cfg
*xcfg
, const struct ofbundle
*ofbundle
)
1199 struct hmap
*xbundles
;
1200 struct xbundle
*xbundle
;
1202 if (!ofbundle
|| !xcfg
) {
1206 xbundles
= &xcfg
->xbundles
;
1208 HMAP_FOR_EACH_IN_BUCKET (xbundle
, hmap_node
, hash_pointer(ofbundle
, 0),
1210 if (xbundle
->ofbundle
== ofbundle
) {
1217 static struct xport
*
1218 xport_lookup(struct xlate_cfg
*xcfg
, const struct ofport_dpif
*ofport
)
1220 struct hmap
*xports
;
1221 struct xport
*xport
;
1223 if (!ofport
|| !xcfg
) {
1227 xports
= &xcfg
->xports
;
1229 HMAP_FOR_EACH_IN_BUCKET (xport
, hmap_node
, hash_pointer(ofport
, 0),
1231 if (xport
->ofport
== ofport
) {
1238 static struct stp_port
*
1239 xport_get_stp_port(const struct xport
*xport
)
1241 return xport
->xbridge
->stp
&& xport
->stp_port_no
!= -1
1242 ? stp_get_port(xport
->xbridge
->stp
, xport
->stp_port_no
)
1247 xport_stp_learn_state(const struct xport
*xport
)
1249 struct stp_port
*sp
= xport_get_stp_port(xport
);
1251 ? stp_learn_in_state(stp_port_get_state(sp
))
1256 xport_stp_forward_state(const struct xport
*xport
)
1258 struct stp_port
*sp
= xport_get_stp_port(xport
);
1260 ? stp_forward_in_state(stp_port_get_state(sp
))
1265 xport_stp_should_forward_bpdu(const struct xport
*xport
)
1267 struct stp_port
*sp
= xport_get_stp_port(xport
);
1268 return stp_should_forward_bpdu(sp
? stp_port_get_state(sp
) : STP_DISABLED
);
1271 /* Returns true if STP should process 'flow'. Sets fields in 'wc' that
1272 * were used to make the determination.*/
1274 stp_should_process_flow(const struct flow
*flow
, struct flow_wildcards
*wc
)
1276 /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */
1277 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
1278 return is_stp(flow
);
1282 stp_process_packet(const struct xport
*xport
, const struct dp_packet
*packet
)
1284 struct stp_port
*sp
= xport_get_stp_port(xport
);
1285 struct dp_packet payload
= *packet
;
1286 struct eth_header
*eth
= dp_packet_data(&payload
);
1288 /* Sink packets on ports that have STP disabled when the bridge has
1290 if (!sp
|| stp_port_get_state(sp
) == STP_DISABLED
) {
1294 /* Trim off padding on payload. */
1295 if (dp_packet_size(&payload
) > ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
1296 dp_packet_set_size(&payload
, ntohs(eth
->eth_type
) + ETH_HEADER_LEN
);
1299 if (dp_packet_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
1300 stp_received_bpdu(sp
, dp_packet_data(&payload
), dp_packet_size(&payload
));
1304 static enum rstp_state
1305 xport_get_rstp_port_state(const struct xport
*xport
)
1307 return xport
->rstp_port
1308 ? rstp_port_get_state(xport
->rstp_port
)
1313 xport_rstp_learn_state(const struct xport
*xport
)
1315 return xport
->xbridge
->rstp
&& xport
->rstp_port
1316 ? rstp_learn_in_state(xport_get_rstp_port_state(xport
))
1321 xport_rstp_forward_state(const struct xport
*xport
)
1323 return xport
->xbridge
->rstp
&& xport
->rstp_port
1324 ? rstp_forward_in_state(xport_get_rstp_port_state(xport
))
1329 xport_rstp_should_manage_bpdu(const struct xport
*xport
)
1331 return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport
));
1335 rstp_process_packet(const struct xport
*xport
, const struct dp_packet
*packet
)
1337 struct dp_packet payload
= *packet
;
1338 struct eth_header
*eth
= dp_packet_data(&payload
);
1340 /* Sink packets on ports that have no RSTP. */
1341 if (!xport
->rstp_port
) {
1345 /* Trim off padding on payload. */
1346 if (dp_packet_size(&payload
) > ntohs(eth
->eth_type
) + ETH_HEADER_LEN
) {
1347 dp_packet_set_size(&payload
, ntohs(eth
->eth_type
) + ETH_HEADER_LEN
);
1350 if (dp_packet_try_pull(&payload
, ETH_HEADER_LEN
+ LLC_HEADER_LEN
)) {
1351 rstp_port_received_bpdu(xport
->rstp_port
, dp_packet_data(&payload
),
1352 dp_packet_size(&payload
));
1356 static struct xport
*
1357 get_ofp_port(const struct xbridge
*xbridge
, ofp_port_t ofp_port
)
1359 struct xport
*xport
;
1361 HMAP_FOR_EACH_IN_BUCKET (xport
, ofp_node
, hash_ofp_port(ofp_port
),
1363 if (xport
->ofp_port
== ofp_port
) {
1371 ofp_port_to_odp_port(const struct xbridge
*xbridge
, ofp_port_t ofp_port
)
1373 const struct xport
*xport
= get_ofp_port(xbridge
, ofp_port
);
1374 return xport
? xport
->odp_port
: ODPP_NONE
;
1378 odp_port_is_alive(const struct xlate_ctx
*ctx
, ofp_port_t ofp_port
)
1380 struct xport
*xport
= get_ofp_port(ctx
->xbridge
, ofp_port
);
1381 return xport
&& xport
->may_enable
;
1384 static struct ofputil_bucket
*
1385 group_first_live_bucket(const struct xlate_ctx
*, const struct group_dpif
*,
1389 group_is_alive(const struct xlate_ctx
*ctx
, uint32_t group_id
, int depth
)
1391 struct group_dpif
*group
;
1393 if (group_dpif_lookup(ctx
->xbridge
->ofproto
, group_id
, &group
)) {
1394 struct ofputil_bucket
*bucket
;
1396 bucket
= group_first_live_bucket(ctx
, group
, depth
);
1397 group_dpif_unref(group
);
1398 return bucket
== NULL
;
1404 #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */
1407 bucket_is_alive(const struct xlate_ctx
*ctx
,
1408 struct ofputil_bucket
*bucket
, int depth
)
1410 if (depth
>= MAX_LIVENESS_RECURSION
) {
1411 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
1413 VLOG_WARN_RL(&rl
, "bucket chaining exceeded %d links",
1414 MAX_LIVENESS_RECURSION
);
1418 return (!ofputil_bucket_has_liveness(bucket
)
1419 || (bucket
->watch_port
!= OFPP_ANY
1420 && odp_port_is_alive(ctx
, bucket
->watch_port
))
1421 || (bucket
->watch_group
!= OFPG_ANY
1422 && group_is_alive(ctx
, bucket
->watch_group
, depth
+ 1)));
1425 static struct ofputil_bucket
*
1426 group_first_live_bucket(const struct xlate_ctx
*ctx
,
1427 const struct group_dpif
*group
, int depth
)
1429 struct ofputil_bucket
*bucket
;
1430 const struct ovs_list
*buckets
;
1432 group_dpif_get_buckets(group
, &buckets
);
1433 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
1434 if (bucket_is_alive(ctx
, bucket
, depth
)) {
1442 static struct ofputil_bucket
*
1443 group_best_live_bucket(const struct xlate_ctx
*ctx
,
1444 const struct group_dpif
*group
,
1447 struct ofputil_bucket
*best_bucket
= NULL
;
1448 uint32_t best_score
= 0;
1451 struct ofputil_bucket
*bucket
;
1452 const struct ovs_list
*buckets
;
1454 group_dpif_get_buckets(group
, &buckets
);
1455 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
1456 if (bucket_is_alive(ctx
, bucket
, 0)) {
1457 uint32_t score
= (hash_int(i
, basis
) & 0xffff) * bucket
->weight
;
1458 if (score
>= best_score
) {
1459 best_bucket
= bucket
;
1470 xbundle_trunks_vlan(const struct xbundle
*bundle
, uint16_t vlan
)
1472 return (bundle
->vlan_mode
!= PORT_VLAN_ACCESS
1473 && (!bundle
->trunks
|| bitmap_is_set(bundle
->trunks
, vlan
)));
1477 xbundle_includes_vlan(const struct xbundle
*xbundle
, uint16_t vlan
)
1479 return vlan
== xbundle
->vlan
|| xbundle_trunks_vlan(xbundle
, vlan
);
1482 static mirror_mask_t
1483 xbundle_mirror_out(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1485 return xbundle
!= &ofpp_none_bundle
1486 ? mirror_bundle_out(xbridge
->mbridge
, xbundle
->ofbundle
)
1490 static mirror_mask_t
1491 xbundle_mirror_src(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1493 return xbundle
!= &ofpp_none_bundle
1494 ? mirror_bundle_src(xbridge
->mbridge
, xbundle
->ofbundle
)
1498 static mirror_mask_t
1499 xbundle_mirror_dst(const struct xbridge
*xbridge
, struct xbundle
*xbundle
)
1501 return xbundle
!= &ofpp_none_bundle
1502 ? mirror_bundle_dst(xbridge
->mbridge
, xbundle
->ofbundle
)
1506 static struct xbundle
*
1507 lookup_input_bundle(const struct xbridge
*xbridge
, ofp_port_t in_port
,
1508 bool warn
, struct xport
**in_xportp
)
1510 struct xport
*xport
;
1512 /* Find the port and bundle for the received packet. */
1513 xport
= get_ofp_port(xbridge
, in_port
);
1517 if (xport
&& xport
->xbundle
) {
1518 return xport
->xbundle
;
1521 /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+),
1522 * which a controller may use as the ingress port for traffic that
1523 * it is sourcing. */
1524 if (in_port
== OFPP_CONTROLLER
|| in_port
== OFPP_NONE
) {
1525 return &ofpp_none_bundle
;
1528 /* Odd. A few possible reasons here:
1530 * - We deleted a port but there are still a few packets queued up
1533 * - Someone externally added a port (e.g. "ovs-dpctl add-if") that
1534 * we don't know about.
1536 * - The ofproto client didn't configure the port as part of a bundle.
1537 * This is particularly likely to happen if a packet was received on the
1538 * port after it was created, but before the client had a chance to
1539 * configure its bundle.
1542 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1544 VLOG_WARN_RL(&rl
, "bridge %s: received packet on unknown "
1545 "port %"PRIu16
, xbridge
->name
, in_port
);
1551 mirror_packet(struct xlate_ctx
*ctx
, struct xbundle
*xbundle
,
1552 mirror_mask_t mirrors
)
1554 bool warn
= ctx
->xin
->packet
!= NULL
;
1555 uint16_t vid
= vlan_tci_to_vid(ctx
->xin
->flow
.vlan_tci
);
1556 if (!input_vid_is_valid(vid
, xbundle
, warn
)) {
1559 uint16_t vlan
= input_vid_to_vlan(xbundle
, vid
);
1561 const struct xbridge
*xbridge
= ctx
->xbridge
;
1563 /* Don't mirror to destinations that we've already mirrored to. */
1564 mirrors
&= ~ctx
->mirrors
;
1569 /* Record these mirrors so that we don't mirror to them again. */
1570 ctx
->mirrors
|= mirrors
;
1572 if (ctx
->xin
->resubmit_stats
) {
1573 mirror_update_stats(xbridge
->mbridge
, mirrors
,
1574 ctx
->xin
->resubmit_stats
->n_packets
,
1575 ctx
->xin
->resubmit_stats
->n_bytes
);
1577 if (ctx
->xin
->xcache
) {
1578 struct xc_entry
*entry
;
1580 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_MIRROR
);
1581 entry
->u
.mirror
.mbridge
= mbridge_ref(xbridge
->mbridge
);
1582 entry
->u
.mirror
.mirrors
= mirrors
;
1586 const unsigned long *vlans
;
1587 mirror_mask_t dup_mirrors
;
1588 struct ofbundle
*out
;
1591 bool has_mirror
= mirror_get(xbridge
->mbridge
, raw_ctz(mirrors
),
1592 &vlans
, &dup_mirrors
, &out
, &out_vlan
);
1593 ovs_assert(has_mirror
);
1596 ctx
->wc
->masks
.vlan_tci
|= htons(VLAN_CFI
| VLAN_VID_MASK
);
1599 if (vlans
&& !bitmap_is_set(vlans
, vlan
)) {
1600 mirrors
= zero_rightmost_1bit(mirrors
);
1604 mirrors
&= ~dup_mirrors
;
1605 ctx
->mirrors
|= dup_mirrors
;
1607 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1608 struct xbundle
*out_xbundle
= xbundle_lookup(xcfg
, out
);
1610 output_normal(ctx
, out_xbundle
, vlan
);
1612 } else if (vlan
!= out_vlan
1613 && !eth_addr_is_reserved(ctx
->xin
->flow
.dl_dst
)) {
1614 struct xbundle
*xbundle
;
1616 LIST_FOR_EACH (xbundle
, list_node
, &xbridge
->xbundles
) {
1617 if (xbundle_includes_vlan(xbundle
, out_vlan
)
1618 && !xbundle_mirror_out(xbridge
, xbundle
)) {
1619 output_normal(ctx
, xbundle
, out_vlan
);
1627 mirror_ingress_packet(struct xlate_ctx
*ctx
)
1629 if (mbridge_has_mirrors(ctx
->xbridge
->mbridge
)) {
1630 bool warn
= ctx
->xin
->packet
!= NULL
;
1631 struct xbundle
*xbundle
= lookup_input_bundle(
1632 ctx
->xbridge
, ctx
->xin
->flow
.in_port
.ofp_port
, warn
, NULL
);
1634 mirror_packet(ctx
, xbundle
,
1635 xbundle_mirror_src(ctx
->xbridge
, xbundle
));
1640 /* Given 'vid', the VID obtained from the 802.1Q header that was received as
1641 * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle',
1642 * the bundle on which the packet was received, returns the VLAN to which the
1645 * Both 'vid' and the return value are in the range 0...4095. */
1647 input_vid_to_vlan(const struct xbundle
*in_xbundle
, uint16_t vid
)
1649 switch (in_xbundle
->vlan_mode
) {
1650 case PORT_VLAN_ACCESS
:
1651 return in_xbundle
->vlan
;
1654 case PORT_VLAN_TRUNK
:
1657 case PORT_VLAN_NATIVE_UNTAGGED
:
1658 case PORT_VLAN_NATIVE_TAGGED
:
1659 return vid
? vid
: in_xbundle
->vlan
;
1666 /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'.
1667 * If so, returns true. Otherwise, returns false and, if 'warn' is true, logs
1670 * 'vid' should be the VID obtained from the 802.1Q header that was received as
1671 * part of a packet (specify 0 if there was no 802.1Q header), in the range
1674 input_vid_is_valid(uint16_t vid
, struct xbundle
*in_xbundle
, bool warn
)
1676 /* Allow any VID on the OFPP_NONE port. */
1677 if (in_xbundle
== &ofpp_none_bundle
) {
1681 switch (in_xbundle
->vlan_mode
) {
1682 case PORT_VLAN_ACCESS
:
1685 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1686 VLOG_WARN_RL(&rl
, "dropping VLAN %"PRIu16
" tagged "
1687 "packet received on port %s configured as VLAN "
1688 "%"PRIu16
" access port", vid
, in_xbundle
->name
,
1695 case PORT_VLAN_NATIVE_UNTAGGED
:
1696 case PORT_VLAN_NATIVE_TAGGED
:
1698 /* Port must always carry its native VLAN. */
1702 case PORT_VLAN_TRUNK
:
1703 if (!xbundle_includes_vlan(in_xbundle
, vid
)) {
1705 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
1706 VLOG_WARN_RL(&rl
, "dropping VLAN %"PRIu16
" packet "
1707 "received on port %s not configured for trunking "
1708 "VLAN %"PRIu16
, vid
, in_xbundle
->name
, vid
);
1720 /* Given 'vlan', the VLAN that a packet belongs to, and
1721 * 'out_xbundle', a bundle on which the packet is to be output, returns the VID
1722 * that should be included in the 802.1Q header. (If the return value is 0,
1723 * then the 802.1Q header should only be included in the packet if there is a
1726 * Both 'vlan' and the return value are in the range 0...4095. */
1728 output_vlan_to_vid(const struct xbundle
*out_xbundle
, uint16_t vlan
)
1730 switch (out_xbundle
->vlan_mode
) {
1731 case PORT_VLAN_ACCESS
:
1734 case PORT_VLAN_TRUNK
:
1735 case PORT_VLAN_NATIVE_TAGGED
:
1738 case PORT_VLAN_NATIVE_UNTAGGED
:
1739 return vlan
== out_xbundle
->vlan
? 0 : vlan
;
1747 output_normal(struct xlate_ctx
*ctx
, const struct xbundle
*out_xbundle
,
1750 ovs_be16
*flow_tci
= &ctx
->xin
->flow
.vlan_tci
;
1752 ovs_be16 tci
, old_tci
;
1753 struct xport
*xport
;
1754 struct xlate_bond_recirc xr
;
1755 bool use_recirc
= false;
1757 vid
= output_vlan_to_vid(out_xbundle
, vlan
);
1758 if (list_is_empty(&out_xbundle
->xports
)) {
1759 /* Partially configured bundle with no slaves. Drop the packet. */
1761 } else if (!out_xbundle
->bond
) {
1762 xport
= CONTAINER_OF(list_front(&out_xbundle
->xports
), struct xport
,
1765 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
1766 struct flow_wildcards
*wc
= ctx
->wc
;
1767 struct ofport_dpif
*ofport
;
1769 if (ctx
->xbridge
->support
.odp
.recirc
) {
1770 use_recirc
= bond_may_recirc(
1771 out_xbundle
->bond
, &xr
.recirc_id
, &xr
.hash_basis
);
1774 /* Only TCP mode uses recirculation. */
1775 xr
.hash_alg
= OVS_HASH_ALG_L4
;
1776 bond_update_post_recirc_rules(out_xbundle
->bond
, false);
1778 /* Recirculation does not require unmasking hash fields. */
1783 ofport
= bond_choose_output_slave(out_xbundle
->bond
,
1784 &ctx
->xin
->flow
, wc
, vid
);
1785 xport
= xport_lookup(xcfg
, ofport
);
1788 /* No slaves enabled, so drop packet. */
1792 /* If use_recirc is set, the main thread will handle stats
1793 * accounting for this bond. */
1795 if (ctx
->xin
->resubmit_stats
) {
1796 bond_account(out_xbundle
->bond
, &ctx
->xin
->flow
, vid
,
1797 ctx
->xin
->resubmit_stats
->n_bytes
);
1799 if (ctx
->xin
->xcache
) {
1800 struct xc_entry
*entry
;
1803 flow
= &ctx
->xin
->flow
;
1804 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_BOND
);
1805 entry
->u
.bond
.bond
= bond_ref(out_xbundle
->bond
);
1806 entry
->u
.bond
.flow
= xmemdup(flow
, sizeof *flow
);
1807 entry
->u
.bond
.vid
= vid
;
1812 old_tci
= *flow_tci
;
1814 if (tci
|| out_xbundle
->use_priority_tags
) {
1815 tci
|= *flow_tci
& htons(VLAN_PCP_MASK
);
1817 tci
|= htons(VLAN_CFI
);
1822 compose_output_action(ctx
, xport
->ofp_port
, use_recirc
? &xr
: NULL
);
1823 *flow_tci
= old_tci
;
1826 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
1827 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
1828 * indicate this; newer upstream kernels use gratuitous ARP requests. */
1830 is_gratuitous_arp(const struct flow
*flow
, struct flow_wildcards
*wc
)
1832 if (flow
->dl_type
!= htons(ETH_TYPE_ARP
)) {
1836 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
1837 if (!eth_addr_is_broadcast(flow
->dl_dst
)) {
1841 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
1842 if (flow
->nw_proto
== ARP_OP_REPLY
) {
1844 } else if (flow
->nw_proto
== ARP_OP_REQUEST
) {
1845 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
1846 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
1848 return flow
->nw_src
== flow
->nw_dst
;
1854 /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or
1855 * dropped. Returns true if they may be forwarded, false if they should be
1858 * 'in_port' must be the xport that corresponds to flow->in_port.
1859 * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
1861 * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
1862 * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
1863 * checked by input_vid_is_valid().
1865 * May also add tags to '*tags', although the current implementation only does
1866 * so in one special case.
1869 is_admissible(struct xlate_ctx
*ctx
, struct xport
*in_port
,
1872 struct xbundle
*in_xbundle
= in_port
->xbundle
;
1873 const struct xbridge
*xbridge
= ctx
->xbridge
;
1874 struct flow
*flow
= &ctx
->xin
->flow
;
1876 /* Drop frames for reserved multicast addresses
1877 * only if forward_bpdu option is absent. */
1878 if (!xbridge
->forward_bpdu
&& eth_addr_is_reserved(flow
->dl_dst
)) {
1879 xlate_report(ctx
, "packet has reserved destination MAC, dropping");
1883 if (in_xbundle
->bond
) {
1884 struct mac_entry
*mac
;
1886 switch (bond_check_admissibility(in_xbundle
->bond
, in_port
->ofport
,
1892 xlate_report(ctx
, "bonding refused admissibility, dropping");
1895 case BV_DROP_IF_MOVED
:
1896 ovs_rwlock_rdlock(&xbridge
->ml
->rwlock
);
1897 mac
= mac_learning_lookup(xbridge
->ml
, flow
->dl_src
, vlan
);
1899 && mac_entry_get_port(xbridge
->ml
, mac
) != in_xbundle
->ofbundle
1900 && (!is_gratuitous_arp(flow
, ctx
->wc
)
1901 || mac_entry_is_grat_arp_locked(mac
))) {
1902 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1903 xlate_report(ctx
, "SLB bond thinks this packet looped back, "
1907 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
1915 /* Checks whether a MAC learning update is necessary for MAC learning table
1916 * 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in
1919 * Most packets processed through the MAC learning table do not actually
1920 * change it in any way. This function requires only a read lock on the MAC
1921 * learning table, so it is much cheaper in this common case.
1923 * Keep the code here synchronized with that in update_learning_table__()
1926 is_mac_learning_update_needed(const struct mac_learning
*ml
,
1927 const struct flow
*flow
,
1928 struct flow_wildcards
*wc
,
1929 int vlan
, struct xbundle
*in_xbundle
)
1930 OVS_REQ_RDLOCK(ml
->rwlock
)
1932 struct mac_entry
*mac
;
1934 if (!mac_learning_may_learn(ml
, flow
->dl_src
, vlan
)) {
1938 mac
= mac_learning_lookup(ml
, flow
->dl_src
, vlan
);
1939 if (!mac
|| mac_entry_age(ml
, mac
)) {
1943 if (is_gratuitous_arp(flow
, wc
)) {
1944 /* We don't want to learn from gratuitous ARP packets that are
1945 * reflected back over bond slaves so we lock the learning table. */
1946 if (!in_xbundle
->bond
) {
1948 } else if (mac_entry_is_grat_arp_locked(mac
)) {
1953 return mac_entry_get_port(ml
, mac
) != in_xbundle
->ofbundle
;
1957 /* Updates MAC learning table 'ml' given that a packet matching 'flow' was
1958 * received on 'in_xbundle' in 'vlan'.
1960 * This code repeats all the checks in is_mac_learning_update_needed() because
1961 * the lock was released between there and here and thus the MAC learning state
1962 * could have changed.
1964 * Keep the code here synchronized with that in is_mac_learning_update_needed()
1967 update_learning_table__(const struct xbridge
*xbridge
,
1968 const struct flow
*flow
, struct flow_wildcards
*wc
,
1969 int vlan
, struct xbundle
*in_xbundle
)
1970 OVS_REQ_WRLOCK(xbridge
->ml
->rwlock
)
1972 struct mac_entry
*mac
;
1974 if (!mac_learning_may_learn(xbridge
->ml
, flow
->dl_src
, vlan
)) {
1978 mac
= mac_learning_insert(xbridge
->ml
, flow
->dl_src
, vlan
);
1979 if (is_gratuitous_arp(flow
, wc
)) {
1980 /* We don't want to learn from gratuitous ARP packets that are
1981 * reflected back over bond slaves so we lock the learning table. */
1982 if (!in_xbundle
->bond
) {
1983 mac_entry_set_grat_arp_lock(mac
);
1984 } else if (mac_entry_is_grat_arp_locked(mac
)) {
1989 if (mac_entry_get_port(xbridge
->ml
, mac
) != in_xbundle
->ofbundle
) {
1990 /* The log messages here could actually be useful in debugging,
1991 * so keep the rate limit relatively high. */
1992 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(30, 300);
1994 VLOG_DBG_RL(&rl
, "bridge %s: learned that "ETH_ADDR_FMT
" is "
1995 "on port %s in VLAN %d",
1996 xbridge
->name
, ETH_ADDR_ARGS(flow
->dl_src
),
1997 in_xbundle
->name
, vlan
);
1999 mac_entry_set_port(xbridge
->ml
, mac
, in_xbundle
->ofbundle
);
2004 update_learning_table(const struct xbridge
*xbridge
,
2005 const struct flow
*flow
, struct flow_wildcards
*wc
,
2006 int vlan
, struct xbundle
*in_xbundle
)
2010 /* Don't learn the OFPP_NONE port. */
2011 if (in_xbundle
== &ofpp_none_bundle
) {
2015 /* First try the common case: no change to MAC learning table. */
2016 ovs_rwlock_rdlock(&xbridge
->ml
->rwlock
);
2017 need_update
= is_mac_learning_update_needed(xbridge
->ml
, flow
, wc
, vlan
,
2019 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
2022 /* Slow path: MAC learning table might need an update. */
2023 ovs_rwlock_wrlock(&xbridge
->ml
->rwlock
);
2024 update_learning_table__(xbridge
, flow
, wc
, vlan
, in_xbundle
);
2025 ovs_rwlock_unlock(&xbridge
->ml
->rwlock
);
2029 /* Updates multicast snooping table 'ms' given that a packet matching 'flow'
2030 * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */
2032 update_mcast_snooping_table4__(const struct xbridge
*xbridge
,
2033 const struct flow
*flow
,
2034 struct mcast_snooping
*ms
, int vlan
,
2035 struct xbundle
*in_xbundle
,
2036 const struct dp_packet
*packet
)
2037 OVS_REQ_WRLOCK(ms
->rwlock
)
2039 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(60, 30);
2041 ovs_be32 ip4
= flow
->igmp_group_ip4
;
2043 switch (ntohs(flow
->tp_src
)) {
2044 case IGMP_HOST_MEMBERSHIP_REPORT
:
2045 case IGMPV2_HOST_MEMBERSHIP_REPORT
:
2046 if (mcast_snooping_add_group4(ms
, ip4
, vlan
, in_xbundle
->ofbundle
)) {
2047 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping learned that "
2048 IP_FMT
" is on port %s in VLAN %d",
2049 xbridge
->name
, IP_ARGS(ip4
), in_xbundle
->name
, vlan
);
2052 case IGMP_HOST_LEAVE_MESSAGE
:
2053 if (mcast_snooping_leave_group4(ms
, ip4
, vlan
, in_xbundle
->ofbundle
)) {
2054 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping leaving "
2055 IP_FMT
" is on port %s in VLAN %d",
2056 xbridge
->name
, IP_ARGS(ip4
), in_xbundle
->name
, vlan
);
2059 case IGMP_HOST_MEMBERSHIP_QUERY
:
2060 if (flow
->nw_src
&& mcast_snooping_add_mrouter(ms
, vlan
,
2061 in_xbundle
->ofbundle
)) {
2062 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping query from "
2063 IP_FMT
" is on port %s in VLAN %d",
2064 xbridge
->name
, IP_ARGS(flow
->nw_src
),
2065 in_xbundle
->name
, vlan
);
2068 case IGMPV3_HOST_MEMBERSHIP_REPORT
:
2069 if ((count
= mcast_snooping_add_report(ms
, packet
, vlan
,
2070 in_xbundle
->ofbundle
))) {
2071 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping processed %d "
2072 "addresses on port %s in VLAN %d",
2073 xbridge
->name
, count
, in_xbundle
->name
, vlan
);
2080 update_mcast_snooping_table6__(const struct xbridge
*xbridge
,
2081 const struct flow
*flow
,
2082 struct mcast_snooping
*ms
, int vlan
,
2083 struct xbundle
*in_xbundle
,
2084 const struct dp_packet
*packet
)
2085 OVS_REQ_WRLOCK(ms
->rwlock
)
2087 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(60, 30);
2090 switch (ntohs(flow
->tp_src
)) {
2092 if (!ipv6_addr_equals(&flow
->ipv6_src
, &in6addr_any
)
2093 && mcast_snooping_add_mrouter(ms
, vlan
, in_xbundle
->ofbundle
)) {
2094 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping query on port %s"
2096 xbridge
->name
, in_xbundle
->name
, vlan
);
2102 count
= mcast_snooping_add_mld(ms
, packet
, vlan
, in_xbundle
->ofbundle
);
2104 VLOG_DBG_RL(&rl
, "bridge %s: multicast snooping processed %d "
2105 "addresses on port %s in VLAN %d",
2106 xbridge
->name
, count
, in_xbundle
->name
, vlan
);
2112 /* Updates multicast snooping table 'ms' given that a packet matching 'flow'
2113 * was received on 'in_xbundle' in 'vlan'. */
2115 update_mcast_snooping_table(const struct xbridge
*xbridge
,
2116 const struct flow
*flow
, int vlan
,
2117 struct xbundle
*in_xbundle
,
2118 const struct dp_packet
*packet
)
2120 struct mcast_snooping
*ms
= xbridge
->ms
;
2121 struct xlate_cfg
*xcfg
;
2122 struct xbundle
*mcast_xbundle
;
2123 struct mcast_port_bundle
*fport
;
2125 /* Don't learn the OFPP_NONE port. */
2126 if (in_xbundle
== &ofpp_none_bundle
) {
2130 /* Don't learn from flood ports */
2131 mcast_xbundle
= NULL
;
2132 ovs_rwlock_wrlock(&ms
->rwlock
);
2133 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2134 LIST_FOR_EACH(fport
, node
, &ms
->fport_list
) {
2135 mcast_xbundle
= xbundle_lookup(xcfg
, fport
->port
);
2136 if (mcast_xbundle
== in_xbundle
) {
2141 if (!mcast_xbundle
|| mcast_xbundle
!= in_xbundle
) {
2142 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
2143 update_mcast_snooping_table4__(xbridge
, flow
, ms
, vlan
,
2144 in_xbundle
, packet
);
2146 update_mcast_snooping_table6__(xbridge
, flow
, ms
, vlan
,
2147 in_xbundle
, packet
);
2150 ovs_rwlock_unlock(&ms
->rwlock
);
2153 /* send the packet to ports having the multicast group learned */
2155 xlate_normal_mcast_send_group(struct xlate_ctx
*ctx
,
2156 struct mcast_snooping
*ms OVS_UNUSED
,
2157 struct mcast_group
*grp
,
2158 struct xbundle
*in_xbundle
, uint16_t vlan
)
2159 OVS_REQ_RDLOCK(ms
->rwlock
)
2161 struct xlate_cfg
*xcfg
;
2162 struct mcast_group_bundle
*b
;
2163 struct xbundle
*mcast_xbundle
;
2165 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2166 LIST_FOR_EACH(b
, bundle_node
, &grp
->bundle_lru
) {
2167 mcast_xbundle
= xbundle_lookup(xcfg
, b
->port
);
2168 if (mcast_xbundle
&& mcast_xbundle
!= in_xbundle
) {
2169 xlate_report(ctx
, "forwarding to mcast group port");
2170 output_normal(ctx
, mcast_xbundle
, vlan
);
2171 } else if (!mcast_xbundle
) {
2172 xlate_report(ctx
, "mcast group port is unknown, dropping");
2174 xlate_report(ctx
, "mcast group port is input port, dropping");
2179 /* send the packet to ports connected to multicast routers */
2181 xlate_normal_mcast_send_mrouters(struct xlate_ctx
*ctx
,
2182 struct mcast_snooping
*ms
,
2183 struct xbundle
*in_xbundle
, uint16_t vlan
)
2184 OVS_REQ_RDLOCK(ms
->rwlock
)
2186 struct xlate_cfg
*xcfg
;
2187 struct mcast_mrouter_bundle
*mrouter
;
2188 struct xbundle
*mcast_xbundle
;
2190 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2191 LIST_FOR_EACH(mrouter
, mrouter_node
, &ms
->mrouter_lru
) {
2192 mcast_xbundle
= xbundle_lookup(xcfg
, mrouter
->port
);
2193 if (mcast_xbundle
&& mcast_xbundle
!= in_xbundle
) {
2194 xlate_report(ctx
, "forwarding to mcast router port");
2195 output_normal(ctx
, mcast_xbundle
, vlan
);
2196 } else if (!mcast_xbundle
) {
2197 xlate_report(ctx
, "mcast router port is unknown, dropping");
2199 xlate_report(ctx
, "mcast router port is input port, dropping");
2204 /* send the packet to ports flagged to be flooded */
2206 xlate_normal_mcast_send_fports(struct xlate_ctx
*ctx
,
2207 struct mcast_snooping
*ms
,
2208 struct xbundle
*in_xbundle
, uint16_t vlan
)
2209 OVS_REQ_RDLOCK(ms
->rwlock
)
2211 struct xlate_cfg
*xcfg
;
2212 struct mcast_port_bundle
*fport
;
2213 struct xbundle
*mcast_xbundle
;
2215 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2216 LIST_FOR_EACH(fport
, node
, &ms
->fport_list
) {
2217 mcast_xbundle
= xbundle_lookup(xcfg
, fport
->port
);
2218 if (mcast_xbundle
&& mcast_xbundle
!= in_xbundle
) {
2219 xlate_report(ctx
, "forwarding to mcast flood port");
2220 output_normal(ctx
, mcast_xbundle
, vlan
);
2221 } else if (!mcast_xbundle
) {
2222 xlate_report(ctx
, "mcast flood port is unknown, dropping");
2224 xlate_report(ctx
, "mcast flood port is input port, dropping");
2229 /* forward the Reports to configured ports */
2231 xlate_normal_mcast_send_rports(struct xlate_ctx
*ctx
,
2232 struct mcast_snooping
*ms
,
2233 struct xbundle
*in_xbundle
, uint16_t vlan
)
2234 OVS_REQ_RDLOCK(ms
->rwlock
)
2236 struct xlate_cfg
*xcfg
;
2237 struct mcast_port_bundle
*rport
;
2238 struct xbundle
*mcast_xbundle
;
2240 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2241 LIST_FOR_EACH(rport
, node
, &ms
->rport_list
) {
2242 mcast_xbundle
= xbundle_lookup(xcfg
, rport
->port
);
2243 if (mcast_xbundle
&& mcast_xbundle
!= in_xbundle
) {
2244 xlate_report(ctx
, "forwarding Report to mcast flagged port");
2245 output_normal(ctx
, mcast_xbundle
, vlan
);
2246 } else if (!mcast_xbundle
) {
2247 xlate_report(ctx
, "mcast port is unknown, dropping the Report");
2249 xlate_report(ctx
, "mcast port is input port, dropping the Report");
2255 xlate_normal_flood(struct xlate_ctx
*ctx
, struct xbundle
*in_xbundle
,
2258 struct xbundle
*xbundle
;
2260 LIST_FOR_EACH (xbundle
, list_node
, &ctx
->xbridge
->xbundles
) {
2261 if (xbundle
!= in_xbundle
2262 && xbundle_includes_vlan(xbundle
, vlan
)
2263 && xbundle
->floodable
2264 && !xbundle_mirror_out(ctx
->xbridge
, xbundle
)) {
2265 output_normal(ctx
, xbundle
, vlan
);
2268 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
2272 xlate_normal(struct xlate_ctx
*ctx
)
2274 struct flow_wildcards
*wc
= ctx
->wc
;
2275 struct flow
*flow
= &ctx
->xin
->flow
;
2276 struct xbundle
*in_xbundle
;
2277 struct xport
*in_port
;
2278 struct mac_entry
*mac
;
2283 memset(&wc
->masks
.dl_src
, 0xff, sizeof wc
->masks
.dl_src
);
2284 memset(&wc
->masks
.dl_dst
, 0xff, sizeof wc
->masks
.dl_dst
);
2285 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
2287 in_xbundle
= lookup_input_bundle(ctx
->xbridge
, flow
->in_port
.ofp_port
,
2288 ctx
->xin
->packet
!= NULL
, &in_port
);
2290 xlate_report(ctx
, "no input bundle, dropping");
2294 /* Drop malformed frames. */
2295 if (flow
->dl_type
== htons(ETH_TYPE_VLAN
) &&
2296 !(flow
->vlan_tci
& htons(VLAN_CFI
))) {
2297 if (ctx
->xin
->packet
!= NULL
) {
2298 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2299 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet with partial "
2300 "VLAN tag received on port %s",
2301 ctx
->xbridge
->name
, in_xbundle
->name
);
2303 xlate_report(ctx
, "partial VLAN tag, dropping");
2307 /* Drop frames on bundles reserved for mirroring. */
2308 if (xbundle_mirror_out(ctx
->xbridge
, in_xbundle
)) {
2309 if (ctx
->xin
->packet
!= NULL
) {
2310 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
2311 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
2312 "%s, which is reserved exclusively for mirroring",
2313 ctx
->xbridge
->name
, in_xbundle
->name
);
2315 xlate_report(ctx
, "input port is mirror output port, dropping");
2320 vid
= vlan_tci_to_vid(flow
->vlan_tci
);
2321 if (!input_vid_is_valid(vid
, in_xbundle
, ctx
->xin
->packet
!= NULL
)) {
2322 xlate_report(ctx
, "disallowed VLAN VID for this input port, dropping");
2325 vlan
= input_vid_to_vlan(in_xbundle
, vid
);
2327 /* Check other admissibility requirements. */
2328 if (in_port
&& !is_admissible(ctx
, in_port
, vlan
)) {
2332 /* Learn source MAC. */
2333 if (ctx
->xin
->may_learn
) {
2334 update_learning_table(ctx
->xbridge
, flow
, wc
, vlan
, in_xbundle
);
2336 if (ctx
->xin
->xcache
) {
2337 struct xc_entry
*entry
;
2339 /* Save enough info to update mac learning table later. */
2340 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NORMAL
);
2341 entry
->u
.normal
.ofproto
= ctx
->xbridge
->ofproto
;
2342 entry
->u
.normal
.flow
= xmemdup(flow
, sizeof *flow
);
2343 entry
->u
.normal
.vlan
= vlan
;
2346 /* Determine output bundle. */
2347 if (mcast_snooping_enabled(ctx
->xbridge
->ms
)
2348 && !eth_addr_is_broadcast(flow
->dl_dst
)
2349 && eth_addr_is_multicast(flow
->dl_dst
)
2350 && is_ip_any(flow
)) {
2351 struct mcast_snooping
*ms
= ctx
->xbridge
->ms
;
2352 struct mcast_group
*grp
= NULL
;
2354 if (is_igmp(flow
)) {
2355 if (mcast_snooping_is_membership(flow
->tp_src
) ||
2356 mcast_snooping_is_query(flow
->tp_src
)) {
2357 if (ctx
->xin
->may_learn
) {
2358 update_mcast_snooping_table(ctx
->xbridge
, flow
, vlan
,
2359 in_xbundle
, ctx
->xin
->packet
);
2362 * IGMP packets need to take the slow path, in order to be
2363 * processed for mdb updates. That will prevent expires
2364 * firing off even after hosts have sent reports.
2366 ctx
->xout
->slow
|= SLOW_ACTION
;
2369 if (mcast_snooping_is_membership(flow
->tp_src
)) {
2370 ovs_rwlock_rdlock(&ms
->rwlock
);
2371 xlate_normal_mcast_send_mrouters(ctx
, ms
, in_xbundle
, vlan
);
2372 /* RFC4541: section 2.1.1, item 1: A snooping switch should
2373 * forward IGMP Membership Reports only to those ports where
2374 * multicast routers are attached. Alternatively stated: a
2375 * snooping switch should not forward IGMP Membership Reports
2376 * to ports on which only hosts are attached.
2377 * An administrative control may be provided to override this
2378 * restriction, allowing the report messages to be flooded to
2380 xlate_normal_mcast_send_rports(ctx
, ms
, in_xbundle
, vlan
);
2381 ovs_rwlock_unlock(&ms
->rwlock
);
2383 xlate_report(ctx
, "multicast traffic, flooding");
2384 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2387 } else if (is_mld(flow
)) {
2388 ctx
->xout
->slow
|= SLOW_ACTION
;
2389 if (ctx
->xin
->may_learn
) {
2390 update_mcast_snooping_table(ctx
->xbridge
, flow
, vlan
,
2391 in_xbundle
, ctx
->xin
->packet
);
2393 if (is_mld_report(flow
)) {
2394 ovs_rwlock_rdlock(&ms
->rwlock
);
2395 xlate_normal_mcast_send_mrouters(ctx
, ms
, in_xbundle
, vlan
);
2396 xlate_normal_mcast_send_rports(ctx
, ms
, in_xbundle
, vlan
);
2397 ovs_rwlock_unlock(&ms
->rwlock
);
2399 xlate_report(ctx
, "MLD query, flooding");
2400 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2403 if ((flow
->dl_type
== htons(ETH_TYPE_IP
)
2404 && ip_is_local_multicast(flow
->nw_dst
))
2405 || (flow
->dl_type
== htons(ETH_TYPE_IPV6
)
2406 && ipv6_is_all_hosts(&flow
->ipv6_dst
))) {
2407 /* RFC4541: section 2.1.2, item 2: Packets with a dst IP
2408 * address in the 224.0.0.x range which are not IGMP must
2409 * be forwarded on all ports */
2410 xlate_report(ctx
, "RFC4541: section 2.1.2, item 2, flooding");
2411 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2416 /* forwarding to group base ports */
2417 ovs_rwlock_rdlock(&ms
->rwlock
);
2418 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
2419 grp
= mcast_snooping_lookup4(ms
, flow
->nw_dst
, vlan
);
2420 } else if (flow
->dl_type
== htons(ETH_TYPE_IPV6
)) {
2421 grp
= mcast_snooping_lookup(ms
, &flow
->ipv6_dst
, vlan
);
2424 xlate_normal_mcast_send_group(ctx
, ms
, grp
, in_xbundle
, vlan
);
2425 xlate_normal_mcast_send_fports(ctx
, ms
, in_xbundle
, vlan
);
2426 xlate_normal_mcast_send_mrouters(ctx
, ms
, in_xbundle
, vlan
);
2428 if (mcast_snooping_flood_unreg(ms
)) {
2429 xlate_report(ctx
, "unregistered multicast, flooding");
2430 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2432 xlate_normal_mcast_send_mrouters(ctx
, ms
, in_xbundle
, vlan
);
2433 xlate_normal_mcast_send_fports(ctx
, ms
, in_xbundle
, vlan
);
2436 ovs_rwlock_unlock(&ms
->rwlock
);
2438 ovs_rwlock_rdlock(&ctx
->xbridge
->ml
->rwlock
);
2439 mac
= mac_learning_lookup(ctx
->xbridge
->ml
, flow
->dl_dst
, vlan
);
2440 mac_port
= mac
? mac_entry_get_port(ctx
->xbridge
->ml
, mac
) : NULL
;
2441 ovs_rwlock_unlock(&ctx
->xbridge
->ml
->rwlock
);
2444 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2445 struct xbundle
*mac_xbundle
= xbundle_lookup(xcfg
, mac_port
);
2446 if (mac_xbundle
&& mac_xbundle
!= in_xbundle
) {
2447 xlate_report(ctx
, "forwarding to learned port");
2448 output_normal(ctx
, mac_xbundle
, vlan
);
2449 } else if (!mac_xbundle
) {
2450 xlate_report(ctx
, "learned port is unknown, dropping");
2452 xlate_report(ctx
, "learned port is input port, dropping");
2455 xlate_report(ctx
, "no learned MAC for destination, flooding");
2456 xlate_normal_flood(ctx
, in_xbundle
, vlan
);
2461 /* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The
2462 * 'probability' is the number of packets out of UINT32_MAX to sample. The
2463 * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for
2464 * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the
2465 * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an
2466 * OVS_USERSPACE_ATTR_ACTIONS attribute is added.
2469 compose_sample_action(struct xlate_ctx
*ctx
,
2470 const uint32_t probability
,
2471 const union user_action_cookie
*cookie
,
2472 const size_t cookie_size
,
2473 const odp_port_t tunnel_out_port
,
2474 bool include_actions
)
2476 size_t sample_offset
= nl_msg_start_nested(ctx
->odp_actions
,
2477 OVS_ACTION_ATTR_SAMPLE
);
2479 nl_msg_put_u32(ctx
->odp_actions
, OVS_SAMPLE_ATTR_PROBABILITY
, probability
);
2481 size_t actions_offset
= nl_msg_start_nested(ctx
->odp_actions
,
2482 OVS_SAMPLE_ATTR_ACTIONS
);
2484 odp_port_t odp_port
= ofp_port_to_odp_port(
2485 ctx
->xbridge
, ctx
->xin
->flow
.in_port
.ofp_port
);
2486 uint32_t pid
= dpif_port_get_pid(ctx
->xbridge
->dpif
, odp_port
,
2487 flow_hash_5tuple(&ctx
->xin
->flow
, 0));
2488 int cookie_offset
= odp_put_userspace_action(pid
, cookie
, cookie_size
,
2493 nl_msg_end_nested(ctx
->odp_actions
, actions_offset
);
2494 nl_msg_end_nested(ctx
->odp_actions
, sample_offset
);
2496 return cookie_offset
;
2499 /* If sFLow is not enabled, returns 0 without doing anything.
2501 * If sFlow is enabled, appends a template "sample" action to the ODP actions
2502 * in 'ctx'. This action is a template because some of the information needed
2503 * to fill it out is not available until flow translation is complete. In this
2504 * case, this functions returns an offset, which is always nonzero, to pass
2505 * later to fix_sflow_action() to fill in the rest of the template. */
2507 compose_sflow_action(struct xlate_ctx
*ctx
)
2509 struct dpif_sflow
*sflow
= ctx
->xbridge
->sflow
;
2510 if (!sflow
|| ctx
->xin
->flow
.in_port
.ofp_port
== OFPP_NONE
) {
2514 union user_action_cookie cookie
= { .type
= USER_ACTION_COOKIE_SFLOW
};
2515 return compose_sample_action(ctx
, dpif_sflow_get_probability(sflow
),
2516 &cookie
, sizeof cookie
.sflow
, ODPP_NONE
,
2520 /* If IPFIX is enabled, this appends a "sample" action to implement IPFIX to
2521 * 'ctx->odp_actions'. */
2523 compose_ipfix_action(struct xlate_ctx
*ctx
, odp_port_t output_odp_port
)
2525 struct dpif_ipfix
*ipfix
= ctx
->xbridge
->ipfix
;
2526 odp_port_t tunnel_out_port
= ODPP_NONE
;
2528 if (!ipfix
|| ctx
->xin
->flow
.in_port
.ofp_port
== OFPP_NONE
) {
2532 /* For input case, output_odp_port is ODPP_NONE, which is an invalid port
2534 if (output_odp_port
== ODPP_NONE
&&
2535 !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix
)) {
2539 /* For output case, output_odp_port is valid*/
2540 if (output_odp_port
!= ODPP_NONE
) {
2541 if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix
)) {
2544 /* If tunnel sampling is enabled, put an additional option attribute:
2545 * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT
2547 if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix
) &&
2548 dpif_ipfix_get_tunnel_port(ipfix
, output_odp_port
) ) {
2549 tunnel_out_port
= output_odp_port
;
2553 union user_action_cookie cookie
= {
2555 .type
= USER_ACTION_COOKIE_IPFIX
,
2556 .output_odp_port
= output_odp_port
,
2559 compose_sample_action(ctx
,
2560 dpif_ipfix_get_bridge_exporter_probability(ipfix
),
2561 &cookie
, sizeof cookie
.ipfix
, tunnel_out_port
,
2565 /* Fix "sample" action according to data collected while composing ODP actions,
2566 * as described in compose_sflow_action().
2568 * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */
2570 fix_sflow_action(struct xlate_ctx
*ctx
, unsigned int user_cookie_offset
)
2572 const struct flow
*base
= &ctx
->base_flow
;
2573 union user_action_cookie
*cookie
;
2575 cookie
= ofpbuf_at(ctx
->odp_actions
, user_cookie_offset
,
2576 sizeof cookie
->sflow
);
2577 ovs_assert(cookie
->type
== USER_ACTION_COOKIE_SFLOW
);
2579 cookie
->type
= USER_ACTION_COOKIE_SFLOW
;
2580 cookie
->sflow
.vlan_tci
= base
->vlan_tci
;
2582 /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
2583 * port information") for the interpretation of cookie->output. */
2584 switch (ctx
->sflow_n_outputs
) {
2586 /* 0x40000000 | 256 means "packet dropped for unknown reason". */
2587 cookie
->sflow
.output
= 0x40000000 | 256;
2591 cookie
->sflow
.output
= dpif_sflow_odp_port_to_ifindex(
2592 ctx
->xbridge
->sflow
, ctx
->sflow_odp_port
);
2593 if (cookie
->sflow
.output
) {
2598 /* 0x80000000 means "multiple output ports. */
2599 cookie
->sflow
.output
= 0x80000000 | ctx
->sflow_n_outputs
;
2605 process_special(struct xlate_ctx
*ctx
, const struct xport
*xport
)
2607 const struct flow
*flow
= &ctx
->xin
->flow
;
2608 struct flow_wildcards
*wc
= ctx
->wc
;
2609 const struct xbridge
*xbridge
= ctx
->xbridge
;
2610 const struct dp_packet
*packet
= ctx
->xin
->packet
;
2611 enum slow_path_reason slow
;
2615 } else if (xport
->cfm
&& cfm_should_process_flow(xport
->cfm
, flow
, wc
)) {
2617 cfm_process_heartbeat(xport
->cfm
, packet
);
2620 } else if (xport
->bfd
&& bfd_should_process_flow(xport
->bfd
, flow
, wc
)) {
2622 bfd_process_packet(xport
->bfd
, flow
, packet
);
2623 /* If POLL received, immediately sends FINAL back. */
2624 if (bfd_should_send_packet(xport
->bfd
)) {
2625 ofproto_dpif_monitor_port_send_soon(xport
->ofport
);
2629 } else if (xport
->xbundle
&& xport
->xbundle
->lacp
2630 && flow
->dl_type
== htons(ETH_TYPE_LACP
)) {
2632 lacp_process_packet(xport
->xbundle
->lacp
, xport
->ofport
, packet
);
2635 } else if ((xbridge
->stp
|| xbridge
->rstp
) &&
2636 stp_should_process_flow(flow
, wc
)) {
2639 ? stp_process_packet(xport
, packet
)
2640 : rstp_process_packet(xport
, packet
);
2643 } else if (xport
->lldp
&& lldp_should_process_flow(xport
->lldp
, flow
)) {
2645 lldp_process_packet(xport
->lldp
, packet
);
2653 ctx
->xout
->slow
|= slow
;
2661 tnl_route_lookup_flow(const struct flow
*oflow
,
2662 ovs_be32
*ip
, struct xport
**out_port
)
2664 char out_dev
[IFNAMSIZ
];
2665 struct xbridge
*xbridge
;
2666 struct xlate_cfg
*xcfg
;
2669 if (!ovs_router_lookup4(oflow
->tunnel
.ip_dst
, out_dev
, &gw
)) {
2676 *ip
= oflow
->tunnel
.ip_dst
;
2679 xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
2682 HMAP_FOR_EACH (xbridge
, hmap_node
, &xcfg
->xbridges
) {
2683 if (!strncmp(xbridge
->name
, out_dev
, IFNAMSIZ
)) {
2686 HMAP_FOR_EACH (port
, ofp_node
, &xbridge
->xports
) {
2687 if (!strncmp(netdev_get_name(port
->netdev
), out_dev
, IFNAMSIZ
)) {
2698 compose_table_xlate(struct xlate_ctx
*ctx
, const struct xport
*out_dev
,
2699 struct dp_packet
*packet
)
2701 struct xbridge
*xbridge
= out_dev
->xbridge
;
2702 struct ofpact_output output
;
2705 ofpact_init(&output
.ofpact
, OFPACT_OUTPUT
, sizeof output
);
2706 flow_extract(packet
, &flow
);
2707 flow
.in_port
.ofp_port
= out_dev
->ofp_port
;
2708 output
.port
= OFPP_TABLE
;
2711 return ofproto_dpif_execute_actions__(xbridge
->ofproto
, &flow
, NULL
,
2712 &output
.ofpact
, sizeof output
,
2713 ctx
->recurse
, ctx
->resubmits
, packet
);
2717 tnl_send_arp_request(struct xlate_ctx
*ctx
, const struct xport
*out_dev
,
2718 const struct eth_addr eth_src
,
2719 ovs_be32 ip_src
, ovs_be32 ip_dst
)
2721 struct dp_packet packet
;
2723 dp_packet_init(&packet
, 0);
2724 compose_arp(&packet
, ARP_OP_REQUEST
,
2725 eth_src
, eth_addr_zero
, true, ip_src
, ip_dst
);
2727 compose_table_xlate(ctx
, out_dev
, &packet
);
2728 dp_packet_uninit(&packet
);
2732 build_tunnel_send(struct xlate_ctx
*ctx
, const struct xport
*xport
,
2733 const struct flow
*flow
, odp_port_t tunnel_odp_port
)
2735 struct ovs_action_push_tnl tnl_push_data
;
2736 struct xport
*out_dev
= NULL
;
2737 ovs_be32 s_ip
, d_ip
= 0;
2738 struct eth_addr smac
;
2739 struct eth_addr dmac
;
2742 err
= tnl_route_lookup_flow(flow
, &d_ip
, &out_dev
);
2744 xlate_report(ctx
, "native tunnel routing failed");
2747 xlate_report(ctx
, "tunneling to "IP_FMT
" via %s",
2748 IP_ARGS(d_ip
), netdev_get_name(out_dev
->netdev
));
2750 /* Use mac addr of bridge port of the peer. */
2751 err
= netdev_get_etheraddr(out_dev
->netdev
, &smac
);
2753 xlate_report(ctx
, "tunnel output device lacks Ethernet address");
2757 err
= netdev_get_in4(out_dev
->netdev
, (struct in_addr
*) &s_ip
, NULL
);
2759 xlate_report(ctx
, "tunnel output device lacks IPv4 address");
2763 err
= tnl_arp_lookup(out_dev
->xbridge
->name
, d_ip
, &dmac
);
2765 xlate_report(ctx
, "ARP cache miss for "IP_FMT
" on bridge %s, "
2766 "sending ARP request",
2767 IP_ARGS(d_ip
), out_dev
->xbridge
->name
);
2768 tnl_send_arp_request(ctx
, out_dev
, smac
, s_ip
, d_ip
);
2771 if (ctx
->xin
->xcache
) {
2772 struct xc_entry
*entry
;
2774 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_TNL_ARP
);
2775 ovs_strlcpy(entry
->u
.tnl_arp_cache
.br_name
, out_dev
->xbridge
->name
,
2776 sizeof entry
->u
.tnl_arp_cache
.br_name
);
2777 entry
->u
.tnl_arp_cache
.d_ip
= d_ip
;
2780 xlate_report(ctx
, "tunneling from "ETH_ADDR_FMT
" "IP_FMT
2781 " to "ETH_ADDR_FMT
" "IP_FMT
,
2782 ETH_ADDR_ARGS(smac
), IP_ARGS(s_ip
),
2783 ETH_ADDR_ARGS(dmac
), IP_ARGS(d_ip
));
2784 err
= tnl_port_build_header(xport
->ofport
, flow
,
2785 dmac
, smac
, s_ip
, &tnl_push_data
);
2789 tnl_push_data
.tnl_port
= odp_to_u32(tunnel_odp_port
);
2790 tnl_push_data
.out_port
= odp_to_u32(out_dev
->odp_port
);
2791 odp_put_tnl_push_action(ctx
->odp_actions
, &tnl_push_data
);
2796 xlate_commit_actions(struct xlate_ctx
*ctx
)
2798 bool use_masked
= ctx
->xbridge
->support
.masked_set_action
;
2800 ctx
->xout
->slow
|= commit_odp_actions(&ctx
->xin
->flow
, &ctx
->base_flow
,
2801 ctx
->odp_actions
, ctx
->wc
,
2806 clear_conntrack(struct flow
*flow
)
2813 compose_output_action__(struct xlate_ctx
*ctx
, ofp_port_t ofp_port
,
2814 const struct xlate_bond_recirc
*xr
, bool check_stp
)
2816 const struct xport
*xport
= get_ofp_port(ctx
->xbridge
, ofp_port
);
2817 struct flow_wildcards
*wc
= ctx
->wc
;
2818 struct flow
*flow
= &ctx
->xin
->flow
;
2819 struct flow_tnl flow_tnl
;
2820 ovs_be16 flow_vlan_tci
;
2821 uint32_t flow_pkt_mark
;
2822 uint8_t flow_nw_tos
;
2823 odp_port_t out_port
, odp_port
;
2824 bool tnl_push_pop_send
= false;
2827 /* If 'struct flow' gets additional metadata, we'll need to zero it out
2828 * before traversing a patch port. */
2829 BUILD_ASSERT_DECL(FLOW_WC_SEQ
== 34);
2830 memset(&flow_tnl
, 0, sizeof flow_tnl
);
2833 xlate_report(ctx
, "Nonexistent output port");
2835 } else if (xport
->config
& OFPUTIL_PC_NO_FWD
) {
2836 xlate_report(ctx
, "OFPPC_NO_FWD set, skipping output");
2838 } else if (check_stp
) {
2839 if (is_stp(&ctx
->base_flow
)) {
2840 if (!xport_stp_should_forward_bpdu(xport
) &&
2841 !xport_rstp_should_manage_bpdu(xport
)) {
2842 if (ctx
->xbridge
->stp
!= NULL
) {
2843 xlate_report(ctx
, "STP not in listening state, "
2844 "skipping bpdu output");
2845 } else if (ctx
->xbridge
->rstp
!= NULL
) {
2846 xlate_report(ctx
, "RSTP not managing BPDU in this state, "
2847 "skipping bpdu output");
2851 } else if (!xport_stp_forward_state(xport
) ||
2852 !xport_rstp_forward_state(xport
)) {
2853 if (ctx
->xbridge
->stp
!= NULL
) {
2854 xlate_report(ctx
, "STP not in forwarding state, "
2856 } else if (ctx
->xbridge
->rstp
!= NULL
) {
2857 xlate_report(ctx
, "RSTP not in forwarding state, "
2865 const struct xport
*peer
= xport
->peer
;
2866 struct flow old_flow
= ctx
->xin
->flow
;
2867 bool old_conntrack
= ctx
->conntracked
;
2868 bool old_was_mpls
= ctx
->was_mpls
;
2869 cls_version_t old_version
= ctx
->tables_version
;
2870 struct ofpbuf old_stack
= ctx
->stack
;
2871 union mf_subvalue new_stack
[1024 / sizeof(union mf_subvalue
)];
2872 struct ofpbuf old_action_set
= ctx
->action_set
;
2873 uint64_t actset_stub
[1024 / 8];
2875 ofpbuf_use_stub(&ctx
->stack
, new_stack
, sizeof new_stack
);
2876 ofpbuf_use_stub(&ctx
->action_set
, actset_stub
, sizeof actset_stub
);
2877 ctx
->xbridge
= peer
->xbridge
;
2878 flow
->in_port
.ofp_port
= peer
->ofp_port
;
2879 flow
->metadata
= htonll(0);
2880 memset(&flow
->tunnel
, 0, sizeof flow
->tunnel
);
2881 memset(flow
->regs
, 0, sizeof flow
->regs
);
2882 flow
->actset_output
= OFPP_UNSET
;
2883 ctx
->conntracked
= false;
2884 clear_conntrack(flow
);
2886 /* The bridge is now known so obtain its table version. */
2888 = ofproto_dpif_get_tables_version(ctx
->xbridge
->ofproto
);
2890 if (!process_special(ctx
, peer
) && may_receive(peer
, ctx
)) {
2891 if (xport_stp_forward_state(peer
) && xport_rstp_forward_state(peer
)) {
2892 xlate_table_action(ctx
, flow
->in_port
.ofp_port
, 0, true, true);
2893 if (ctx
->action_set
.size
) {
2894 /* Translate action set only if not dropping the packet and
2895 * not recirculating. */
2896 if (!exit_recirculates(ctx
)) {
2897 xlate_action_set(ctx
);
2900 /* Check if need to recirculate. */
2901 if (exit_recirculates(ctx
)) {
2902 compose_recirculate_action(ctx
);
2905 /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and
2906 * the learning action look at the packet, then drop it. */
2907 struct flow old_base_flow
= ctx
->base_flow
;
2908 size_t old_size
= ctx
->odp_actions
->size
;
2909 mirror_mask_t old_mirrors
= ctx
->mirrors
;
2911 xlate_table_action(ctx
, flow
->in_port
.ofp_port
, 0, true, true);
2912 ctx
->mirrors
= old_mirrors
;
2913 ctx
->base_flow
= old_base_flow
;
2914 ctx
->odp_actions
->size
= old_size
;
2916 /* Undo changes that may have been done for recirculation. */
2917 if (exit_recirculates(ctx
)) {
2918 ctx
->action_set
.size
= ctx
->recirc_action_offset
;
2919 ctx
->recirc_action_offset
= -1;
2920 ctx
->last_unroll_offset
= -1;
2925 ctx
->xin
->flow
= old_flow
;
2926 ctx
->xbridge
= xport
->xbridge
;
2927 ofpbuf_uninit(&ctx
->action_set
);
2928 ctx
->action_set
= old_action_set
;
2929 ofpbuf_uninit(&ctx
->stack
);
2930 ctx
->stack
= old_stack
;
2932 /* Restore calling bridge's lookup version. */
2933 ctx
->tables_version
= old_version
;
2935 /* The peer bridge popping MPLS should have no effect on the original
2937 ctx
->was_mpls
= old_was_mpls
;
2939 /* The peer bridge's conntrack execution should have no effect on the
2940 * original bridge. */
2941 ctx
->conntracked
= old_conntrack
;
2943 /* The fact that the peer bridge exits (for any reason) does not mean
2944 * that the original bridge should exit. Specifically, if the peer
2945 * bridge recirculates (which typically modifies the packet), the
2946 * original bridge must continue processing with the original, not the
2947 * recirculated packet! */
2950 if (ctx
->xin
->resubmit_stats
) {
2951 netdev_vport_inc_tx(xport
->netdev
, ctx
->xin
->resubmit_stats
);
2952 netdev_vport_inc_rx(peer
->netdev
, ctx
->xin
->resubmit_stats
);
2954 bfd_account_rx(peer
->bfd
, ctx
->xin
->resubmit_stats
);
2957 if (ctx
->xin
->xcache
) {
2958 struct xc_entry
*entry
;
2960 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NETDEV
);
2961 entry
->u
.dev
.tx
= netdev_ref(xport
->netdev
);
2962 entry
->u
.dev
.rx
= netdev_ref(peer
->netdev
);
2963 entry
->u
.dev
.bfd
= bfd_ref(peer
->bfd
);
2968 flow_vlan_tci
= flow
->vlan_tci
;
2969 flow_pkt_mark
= flow
->pkt_mark
;
2970 flow_nw_tos
= flow
->nw_tos
;
2972 if (count_skb_priorities(xport
)) {
2973 memset(&wc
->masks
.skb_priority
, 0xff, sizeof wc
->masks
.skb_priority
);
2974 if (dscp_from_skb_priority(xport
, flow
->skb_priority
, &dscp
)) {
2975 wc
->masks
.nw_tos
|= IP_DSCP_MASK
;
2976 flow
->nw_tos
&= ~IP_DSCP_MASK
;
2977 flow
->nw_tos
|= dscp
;
2981 if (xport
->is_tunnel
) {
2982 /* Save tunnel metadata so that changes made due to
2983 * the Logical (tunnel) Port are not visible for any further
2984 * matches, while explicit set actions on tunnel metadata are.
2986 flow_tnl
= flow
->tunnel
;
2987 odp_port
= tnl_port_send(xport
->ofport
, flow
, ctx
->wc
);
2988 if (odp_port
== ODPP_NONE
) {
2989 xlate_report(ctx
, "Tunneling decided against output");
2990 goto out
; /* restore flow_nw_tos */
2992 if (flow
->tunnel
.ip_dst
== ctx
->orig_tunnel_ip_dst
) {
2993 xlate_report(ctx
, "Not tunneling to our own address");
2994 goto out
; /* restore flow_nw_tos */
2996 if (ctx
->xin
->resubmit_stats
) {
2997 netdev_vport_inc_tx(xport
->netdev
, ctx
->xin
->resubmit_stats
);
2999 if (ctx
->xin
->xcache
) {
3000 struct xc_entry
*entry
;
3002 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_NETDEV
);
3003 entry
->u
.dev
.tx
= netdev_ref(xport
->netdev
);
3005 out_port
= odp_port
;
3006 if (ovs_native_tunneling_is_on(ctx
->xbridge
->ofproto
)) {
3007 xlate_report(ctx
, "output to native tunnel");
3008 tnl_push_pop_send
= true;
3010 xlate_report(ctx
, "output to kernel tunnel");
3011 commit_odp_tunnel_action(flow
, &ctx
->base_flow
, ctx
->odp_actions
);
3012 flow
->tunnel
= flow_tnl
; /* Restore tunnel metadata */
3015 odp_port
= xport
->odp_port
;
3016 out_port
= odp_port
;
3017 if (ofproto_has_vlan_splinters(ctx
->xbridge
->ofproto
)) {
3018 ofp_port_t vlandev_port
;
3020 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
3021 vlandev_port
= vsp_realdev_to_vlandev(ctx
->xbridge
->ofproto
,
3022 ofp_port
, flow
->vlan_tci
);
3023 if (vlandev_port
!= ofp_port
) {
3024 out_port
= ofp_port_to_odp_port(ctx
->xbridge
, vlandev_port
);
3025 flow
->vlan_tci
= htons(0);
3030 if (out_port
!= ODPP_NONE
) {
3031 xlate_commit_actions(ctx
);
3034 struct ovs_action_hash
*act_hash
;
3037 act_hash
= nl_msg_put_unspec_uninit(ctx
->odp_actions
,
3038 OVS_ACTION_ATTR_HASH
,
3040 act_hash
->hash_alg
= xr
->hash_alg
;
3041 act_hash
->hash_basis
= xr
->hash_basis
;
3043 /* Recirc action. */
3044 nl_msg_put_u32(ctx
->odp_actions
, OVS_ACTION_ATTR_RECIRC
,
3048 if (tnl_push_pop_send
) {
3049 build_tunnel_send(ctx
, xport
, flow
, odp_port
);
3050 flow
->tunnel
= flow_tnl
; /* Restore tunnel metadata */
3052 odp_port_t odp_tnl_port
= ODPP_NONE
;
3054 /* XXX: Write better Filter for tunnel port. We can use inport
3055 * int tunnel-port flow to avoid these checks completely. */
3056 if (ofp_port
== OFPP_LOCAL
&&
3057 ovs_native_tunneling_is_on(ctx
->xbridge
->ofproto
)) {
3059 odp_tnl_port
= tnl_port_map_lookup(flow
, wc
);
3062 if (odp_tnl_port
!= ODPP_NONE
) {
3063 nl_msg_put_odp_port(ctx
->odp_actions
,
3064 OVS_ACTION_ATTR_TUNNEL_POP
,
3067 /* Tunnel push-pop action is not compatible with
3069 compose_ipfix_action(ctx
, out_port
);
3070 nl_msg_put_odp_port(ctx
->odp_actions
,
3071 OVS_ACTION_ATTR_OUTPUT
,
3077 ctx
->sflow_odp_port
= odp_port
;
3078 ctx
->sflow_n_outputs
++;
3079 ctx
->nf_output_iface
= ofp_port
;
3082 if (mbridge_has_mirrors(ctx
->xbridge
->mbridge
) && xport
->xbundle
) {
3083 mirror_packet(ctx
, xport
->xbundle
,
3084 xbundle_mirror_dst(xport
->xbundle
->xbridge
,
3090 flow
->vlan_tci
= flow_vlan_tci
;
3091 flow
->pkt_mark
= flow_pkt_mark
;
3092 flow
->nw_tos
= flow_nw_tos
;
3096 compose_output_action(struct xlate_ctx
*ctx
, ofp_port_t ofp_port
,
3097 const struct xlate_bond_recirc
*xr
)
3099 compose_output_action__(ctx
, ofp_port
, xr
, true);
3103 xlate_recursively(struct xlate_ctx
*ctx
, struct rule_dpif
*rule
)
3105 struct rule_dpif
*old_rule
= ctx
->rule
;
3106 ovs_be64 old_cookie
= ctx
->rule_cookie
;
3107 const struct rule_actions
*actions
;
3109 if (ctx
->xin
->resubmit_stats
) {
3110 rule_dpif_credit_stats(rule
, ctx
->xin
->resubmit_stats
);
3116 ctx
->rule_cookie
= rule_dpif_get_flow_cookie(rule
);
3117 actions
= rule_dpif_get_actions(rule
);
3118 do_xlate_actions(actions
->ofpacts
, actions
->ofpacts_len
, ctx
);
3119 ctx
->rule_cookie
= old_cookie
;
3120 ctx
->rule
= old_rule
;
3125 xlate_resubmit_resource_check(struct xlate_ctx
*ctx
)
3127 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3129 if (ctx
->recurse
>= MAX_RESUBMIT_RECURSION
+ MAX_INTERNAL_RESUBMITS
) {
3130 VLOG_ERR_RL(&rl
, "resubmit actions recursed over %d times",
3131 MAX_RESUBMIT_RECURSION
);
3132 } else if (ctx
->resubmits
>= MAX_RESUBMITS
+ MAX_INTERNAL_RESUBMITS
) {
3133 VLOG_ERR_RL(&rl
, "over %d resubmit actions", MAX_RESUBMITS
);
3134 } else if (ctx
->odp_actions
->size
> UINT16_MAX
) {
3135 VLOG_ERR_RL(&rl
, "resubmits yielded over 64 kB of actions");
3136 } else if (ctx
->stack
.size
>= 65536) {
3137 VLOG_ERR_RL(&rl
, "resubmits yielded over 64 kB of stack");
3146 xlate_table_action(struct xlate_ctx
*ctx
, ofp_port_t in_port
, uint8_t table_id
,
3147 bool may_packet_in
, bool honor_table_miss
)
3149 /* Check if we need to recirculate before matching in a table. */
3150 if (ctx
->was_mpls
) {
3151 ctx_trigger_recirculation(ctx
);
3154 if (xlate_resubmit_resource_check(ctx
)) {
3155 uint8_t old_table_id
= ctx
->table_id
;
3156 struct rule_dpif
*rule
;
3158 ctx
->table_id
= table_id
;
3160 rule
= rule_dpif_lookup_from_table(ctx
->xbridge
->ofproto
,
3161 ctx
->tables_version
,
3162 &ctx
->xin
->flow
, ctx
->xin
->wc
,
3163 ctx
->xin
->resubmit_stats
,
3164 &ctx
->table_id
, in_port
,
3165 may_packet_in
, honor_table_miss
);
3167 if (OVS_UNLIKELY(ctx
->xin
->resubmit_hook
)) {
3168 ctx
->xin
->resubmit_hook(ctx
->xin
, rule
, ctx
->recurse
+ 1);
3172 /* Fill in the cache entry here instead of xlate_recursively
3173 * to make the reference counting more explicit. We take a
3174 * reference in the lookups above if we are going to cache the
3176 if (ctx
->xin
->xcache
) {
3177 struct xc_entry
*entry
;
3179 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_RULE
);
3180 entry
->u
.rule
= rule
;
3181 rule_dpif_ref(rule
);
3183 xlate_recursively(ctx
, rule
);
3186 ctx
->table_id
= old_table_id
;
3194 xlate_group_stats(struct xlate_ctx
*ctx
, struct group_dpif
*group
,
3195 struct ofputil_bucket
*bucket
)
3197 if (ctx
->xin
->resubmit_stats
) {
3198 group_dpif_credit_stats(group
, bucket
, ctx
->xin
->resubmit_stats
);
3200 if (ctx
->xin
->xcache
) {
3201 struct xc_entry
*entry
;
3203 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_GROUP
);
3204 entry
->u
.group
.group
= group_dpif_ref(group
);
3205 entry
->u
.group
.bucket
= bucket
;
3210 xlate_group_bucket(struct xlate_ctx
*ctx
, struct ofputil_bucket
*bucket
)
3212 uint64_t action_list_stub
[1024 / 8];
3213 struct ofpbuf action_list
, action_set
;
3214 struct flow old_flow
= ctx
->xin
->flow
;
3215 bool old_was_mpls
= ctx
->was_mpls
;
3217 ofpbuf_use_const(&action_set
, bucket
->ofpacts
, bucket
->ofpacts_len
);
3218 ofpbuf_use_stub(&action_list
, action_list_stub
, sizeof action_list_stub
);
3220 ofpacts_execute_action_set(&action_list
, &action_set
);
3222 do_xlate_actions(action_list
.data
, action_list
.size
, ctx
);
3225 ofpbuf_uninit(&action_set
);
3226 ofpbuf_uninit(&action_list
);
3228 /* Check if need to recirculate. */
3229 if (exit_recirculates(ctx
)) {
3230 compose_recirculate_action(ctx
);
3233 /* Roll back flow to previous state.
3234 * This is equivalent to cloning the packet for each bucket.
3236 * As a side effect any subsequently applied actions will
3237 * also effectively be applied to a clone of the packet taken
3238 * just before applying the all or indirect group.
3240 * Note that group buckets are action sets, hence they cannot modify the
3241 * main action set. Also any stack actions are ignored when executing an
3242 * action set, so group buckets cannot change the stack either.
3243 * However, we do allow resubmit actions in group buckets, which could
3244 * break the above assumptions. It is up to the controller to not mess up
3245 * with the action_set and stack in the tables resubmitted to from
3247 ctx
->xin
->flow
= old_flow
;
3249 /* The group bucket popping MPLS should have no effect after bucket
3251 ctx
->was_mpls
= old_was_mpls
;
3253 /* The fact that the group bucket exits (for any reason) does not mean that
3254 * the translation after the group action should exit. Specifically, if
3255 * the group bucket recirculates (which typically modifies the packet), the
3256 * actions after the group action must continue processing with the
3257 * original, not the recirculated packet! */
3262 xlate_all_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
3264 struct ofputil_bucket
*bucket
;
3265 const struct ovs_list
*buckets
;
3267 group_dpif_get_buckets(group
, &buckets
);
3269 LIST_FOR_EACH (bucket
, list_node
, buckets
) {
3270 xlate_group_bucket(ctx
, bucket
);
3272 xlate_group_stats(ctx
, group
, NULL
);
3276 xlate_ff_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
3278 struct ofputil_bucket
*bucket
;
3280 bucket
= group_first_live_bucket(ctx
, group
, 0);
3282 xlate_group_bucket(ctx
, bucket
);
3283 xlate_group_stats(ctx
, group
, bucket
);
3288 xlate_default_select_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
3290 struct flow_wildcards
*wc
= ctx
->wc
;
3291 struct ofputil_bucket
*bucket
;
3294 basis
= flow_hash_symmetric_l4(&ctx
->xin
->flow
, 0);
3295 flow_mask_hash_fields(&ctx
->xin
->flow
, wc
, NX_HASH_FIELDS_SYMMETRIC_L4
);
3296 bucket
= group_best_live_bucket(ctx
, group
, basis
);
3298 xlate_group_bucket(ctx
, bucket
);
3299 xlate_group_stats(ctx
, group
, bucket
);
3304 xlate_hash_fields_select_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
3306 struct mf_bitmap hash_fields
= MF_BITMAP_INITIALIZER
;
3307 const struct field_array
*fields
;
3308 struct ofputil_bucket
*bucket
;
3312 fields
= group_dpif_get_fields(group
);
3313 basis
= hash_uint64(group_dpif_get_selection_method_param(group
));
3315 /* Determine which fields to hash */
3316 for (i
= 0; i
< MFF_N_IDS
; i
++) {
3317 if (bitmap_is_set(fields
->used
.bm
, i
)) {
3318 const struct mf_field
*mf
;
3320 /* If the field is already present in 'hash_fields' then
3321 * this loop has already checked that it and its pre-requisites
3322 * are present in the flow and its pre-requisites have
3323 * already been added to 'hash_fields'. There is nothing more
3324 * to do here and as an optimisation the loop can continue. */
3325 if (bitmap_is_set(hash_fields
.bm
, i
)) {
3331 /* Only hash a field if it and its pre-requisites are present
3333 if (!mf_are_prereqs_ok(mf
, &ctx
->xin
->flow
)) {
3337 /* Hash both the field and its pre-requisites */
3338 mf_bitmap_set_field_and_prereqs(mf
, &hash_fields
);
3342 /* Hash the fields */
3343 for (i
= 0; i
< MFF_N_IDS
; i
++) {
3344 if (bitmap_is_set(hash_fields
.bm
, i
)) {
3345 const struct mf_field
*mf
= mf_from_id(i
);
3346 union mf_value value
;
3349 mf_get_value(mf
, &ctx
->xin
->flow
, &value
);
3350 /* This seems inefficient but so does apply_mask() */
3351 for (j
= 0; j
< mf
->n_bytes
; j
++) {
3352 ((uint8_t *) &value
)[j
] &= ((uint8_t *) &fields
->value
[i
])[j
];
3354 basis
= hash_bytes(&value
, mf
->n_bytes
, basis
);
3356 /* For tunnels, hash in whether the field is present. */
3357 if (mf_is_tun_metadata(mf
)) {
3358 basis
= hash_boolean(mf_is_set(mf
, &ctx
->xin
->flow
), basis
);
3361 mf_mask_field(mf
, &ctx
->wc
->masks
);
3365 bucket
= group_best_live_bucket(ctx
, group
, basis
);
3367 xlate_group_bucket(ctx
, bucket
);
3368 xlate_group_stats(ctx
, group
, bucket
);
3373 xlate_select_group(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
3375 const char *selection_method
= group_dpif_get_selection_method(group
);
3377 if (selection_method
[0] == '\0') {
3378 xlate_default_select_group(ctx
, group
);
3379 } else if (!strcasecmp("hash", selection_method
)) {
3380 xlate_hash_fields_select_group(ctx
, group
);
3382 /* Parsing of groups should ensure this never happens */
3388 xlate_group_action__(struct xlate_ctx
*ctx
, struct group_dpif
*group
)
3390 bool was_in_group
= ctx
->in_group
;
3391 ctx
->in_group
= true;
3393 switch (group_dpif_get_type(group
)) {
3395 case OFPGT11_INDIRECT
:
3396 xlate_all_group(ctx
, group
);
3398 case OFPGT11_SELECT
:
3399 xlate_select_group(ctx
, group
);
3402 xlate_ff_group(ctx
, group
);
3407 group_dpif_unref(group
);
3409 ctx
->in_group
= was_in_group
;
3413 xlate_group_action(struct xlate_ctx
*ctx
, uint32_t group_id
)
3415 if (xlate_resubmit_resource_check(ctx
)) {
3416 struct group_dpif
*group
;
3419 got_group
= group_dpif_lookup(ctx
->xbridge
->ofproto
, group_id
, &group
);
3421 xlate_group_action__(ctx
, group
);
3431 xlate_ofpact_resubmit(struct xlate_ctx
*ctx
,
3432 const struct ofpact_resubmit
*resubmit
)
3436 bool may_packet_in
= false;
3437 bool honor_table_miss
= false;
3439 if (ctx
->rule
&& rule_dpif_is_internal(ctx
->rule
)) {
3440 /* Still allow missed packets to be sent to the controller
3441 * if resubmitting from an internal table. */
3442 may_packet_in
= true;
3443 honor_table_miss
= true;
3446 in_port
= resubmit
->in_port
;
3447 if (in_port
== OFPP_IN_PORT
) {
3448 in_port
= ctx
->xin
->flow
.in_port
.ofp_port
;
3451 table_id
= resubmit
->table_id
;
3452 if (table_id
== 255) {
3453 table_id
= ctx
->table_id
;
3456 xlate_table_action(ctx
, in_port
, table_id
, may_packet_in
,
3461 flood_packets(struct xlate_ctx
*ctx
, bool all
)
3463 const struct xport
*xport
;
3465 HMAP_FOR_EACH (xport
, ofp_node
, &ctx
->xbridge
->xports
) {
3466 if (xport
->ofp_port
== ctx
->xin
->flow
.in_port
.ofp_port
) {
3471 compose_output_action__(ctx
, xport
->ofp_port
, NULL
, false);
3472 } else if (!(xport
->config
& OFPUTIL_PC_NO_FLOOD
)) {
3473 compose_output_action(ctx
, xport
->ofp_port
, NULL
);
3477 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
3481 execute_controller_action(struct xlate_ctx
*ctx
, int len
,
3482 enum ofp_packet_in_reason reason
,
3483 uint16_t controller_id
)
3485 struct ofproto_packet_in
*pin
;
3486 struct dp_packet
*packet
;
3488 ctx
->xout
->slow
|= SLOW_CONTROLLER
;
3489 if (!ctx
->xin
->packet
) {
3493 packet
= dp_packet_clone(ctx
->xin
->packet
);
3495 xlate_commit_actions(ctx
);
3497 odp_execute_actions(NULL
, &packet
, 1, false,
3498 ctx
->odp_actions
->data
, ctx
->odp_actions
->size
, NULL
);
3500 pin
= xmalloc(sizeof *pin
);
3501 pin
->up
.packet_len
= dp_packet_size(packet
);
3502 pin
->up
.packet
= dp_packet_steal_data(packet
);
3503 pin
->up
.reason
= reason
;
3504 pin
->up
.table_id
= ctx
->table_id
;
3505 pin
->up
.cookie
= ctx
->rule_cookie
;
3507 flow_get_metadata(&ctx
->xin
->flow
, &pin
->up
.flow_metadata
);
3509 pin
->controller_id
= controller_id
;
3510 pin
->send_len
= len
;
3511 /* If a rule is a table-miss rule then this is
3512 * a table-miss handled by a table-miss rule.
3514 * Else, if rule is internal and has a controller action,
3515 * the later being implied by the rule being processed here,
3516 * then this is a table-miss handled without a table-miss rule.
3518 * Otherwise this is not a table-miss. */
3519 pin
->miss_type
= OFPROTO_PACKET_IN_NO_MISS
;
3521 if (rule_dpif_is_table_miss(ctx
->rule
)) {
3522 pin
->miss_type
= OFPROTO_PACKET_IN_MISS_FLOW
;
3523 } else if (rule_dpif_is_internal(ctx
->rule
)) {
3524 pin
->miss_type
= OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW
;
3527 ofproto_dpif_send_packet_in(ctx
->xbridge
->ofproto
, pin
);
3528 dp_packet_delete(packet
);
3532 compose_recirculate_action__(struct xlate_ctx
*ctx
, uint8_t table
)
3534 struct recirc_metadata md
;
3537 recirc_metadata_from_flow(&md
, &ctx
->xin
->flow
);
3539 ovs_assert(ctx
->recirc_action_offset
>= 0);
3541 struct recirc_state state
= {
3543 .ofproto
= ctx
->xbridge
->ofproto
,
3545 .stack
= &ctx
->stack
,
3546 .mirrors
= ctx
->mirrors
,
3547 .conntracked
= ctx
->conntracked
,
3548 .action_set_len
= ctx
->recirc_action_offset
,
3549 .ofpacts_len
= ctx
->action_set
.size
,
3550 .ofpacts
= ctx
->action_set
.data
,
3553 /* Only allocate recirculation ID if we have a packet. */
3554 if (ctx
->xin
->packet
) {
3555 /* Allocate a unique recirc id for the given metadata state in the
3556 * flow. The life-cycle of this recirc id is managed by associating it
3557 * with the udpif key ('ukey') created for each new datapath flow. */
3558 id
= recirc_alloc_id_ctx(&state
);
3560 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3561 VLOG_ERR_RL(&rl
, "Failed to allocate recirculation id");
3564 xlate_out_add_recirc(ctx
->xout
, id
);
3566 /* Look up an existing recirc id for the given metadata state in the
3567 * flow. No new reference is taken, as the ID is RCU protected and is
3568 * only required temporarily for verification.
3570 * This might fail and return 0. We let zero 'id' to be used in the
3571 * RECIRC action below, which will fail all revalidations as zero is
3572 * not a valid recirculation ID. */
3573 id
= recirc_find_id(&state
);
3576 nl_msg_put_u32(ctx
->odp_actions
, OVS_ACTION_ATTR_RECIRC
, id
);
3578 /* Undo changes done by recirculation. */
3579 ctx
->action_set
.size
= ctx
->recirc_action_offset
;
3580 ctx
->recirc_action_offset
= -1;
3581 ctx
->last_unroll_offset
= -1;
3584 /* Called only when ctx->recirc_action_offset is set. */
3586 compose_recirculate_action(struct xlate_ctx
*ctx
)
3588 xlate_commit_actions(ctx
);
3589 compose_recirculate_action__(ctx
, 0);
3593 compose_mpls_push_action(struct xlate_ctx
*ctx
, struct ofpact_push_mpls
*mpls
)
3595 struct flow
*flow
= &ctx
->xin
->flow
;
3598 ovs_assert(eth_type_mpls(mpls
->ethertype
));
3600 n
= flow_count_mpls_labels(flow
, ctx
->wc
);
3602 xlate_commit_actions(ctx
);
3603 } else if (n
>= FLOW_MAX_MPLS_LABELS
) {
3604 if (ctx
->xin
->packet
!= NULL
) {
3605 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3606 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet on which an "
3607 "MPLS push action can't be performed as it would "
3608 "have more MPLS LSEs than the %d supported.",
3609 ctx
->xbridge
->name
, FLOW_MAX_MPLS_LABELS
);
3615 flow_push_mpls(flow
, n
, mpls
->ethertype
, ctx
->wc
);
3619 compose_mpls_pop_action(struct xlate_ctx
*ctx
, ovs_be16 eth_type
)
3621 struct flow
*flow
= &ctx
->xin
->flow
;
3622 int n
= flow_count_mpls_labels(flow
, ctx
->wc
);
3624 if (flow_pop_mpls(flow
, n
, eth_type
, ctx
->wc
)) {
3625 if (ctx
->xbridge
->support
.odp
.recirc
) {
3626 ctx
->was_mpls
= true;
3628 } else if (n
>= FLOW_MAX_MPLS_LABELS
) {
3629 if (ctx
->xin
->packet
!= NULL
) {
3630 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
3631 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet on which an "
3632 "MPLS pop action can't be performed as it has "
3633 "more MPLS LSEs than the %d supported.",
3634 ctx
->xbridge
->name
, FLOW_MAX_MPLS_LABELS
);
3637 ofpbuf_clear(ctx
->odp_actions
);
3642 compose_dec_ttl(struct xlate_ctx
*ctx
, struct ofpact_cnt_ids
*ids
)
3644 struct flow
*flow
= &ctx
->xin
->flow
;
3646 if (!is_ip_any(flow
)) {
3650 ctx
->wc
->masks
.nw_ttl
= 0xff;
3651 if (flow
->nw_ttl
> 1) {
3657 for (i
= 0; i
< ids
->n_controllers
; i
++) {
3658 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
,
3662 /* Stop processing for current table. */
3668 compose_set_mpls_label_action(struct xlate_ctx
*ctx
, ovs_be32 label
)
3670 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
3671 ctx
->wc
->masks
.mpls_lse
[0] |= htonl(MPLS_LABEL_MASK
);
3672 set_mpls_lse_label(&ctx
->xin
->flow
.mpls_lse
[0], label
);
3677 compose_set_mpls_tc_action(struct xlate_ctx
*ctx
, uint8_t tc
)
3679 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
3680 ctx
->wc
->masks
.mpls_lse
[0] |= htonl(MPLS_TC_MASK
);
3681 set_mpls_lse_tc(&ctx
->xin
->flow
.mpls_lse
[0], tc
);
3686 compose_set_mpls_ttl_action(struct xlate_ctx
*ctx
, uint8_t ttl
)
3688 if (eth_type_mpls(ctx
->xin
->flow
.dl_type
)) {
3689 ctx
->wc
->masks
.mpls_lse
[0] |= htonl(MPLS_TTL_MASK
);
3690 set_mpls_lse_ttl(&ctx
->xin
->flow
.mpls_lse
[0], ttl
);
3695 compose_dec_mpls_ttl_action(struct xlate_ctx
*ctx
)
3697 struct flow
*flow
= &ctx
->xin
->flow
;
3699 if (eth_type_mpls(flow
->dl_type
)) {
3700 uint8_t ttl
= mpls_lse_to_ttl(flow
->mpls_lse
[0]);
3702 ctx
->wc
->masks
.mpls_lse
[0] |= htonl(MPLS_TTL_MASK
);
3705 set_mpls_lse_ttl(&flow
->mpls_lse
[0], ttl
);
3708 execute_controller_action(ctx
, UINT16_MAX
, OFPR_INVALID_TTL
, 0);
3712 /* Stop processing for current table. */
3717 xlate_output_action(struct xlate_ctx
*ctx
,
3718 ofp_port_t port
, uint16_t max_len
, bool may_packet_in
)
3720 ofp_port_t prev_nf_output_iface
= ctx
->nf_output_iface
;
3722 ctx
->nf_output_iface
= NF_OUT_DROP
;
3726 compose_output_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
, NULL
);
3729 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
,
3730 0, may_packet_in
, true);
3736 flood_packets(ctx
, false);
3739 flood_packets(ctx
, true);
3741 case OFPP_CONTROLLER
:
3742 execute_controller_action(ctx
, max_len
,
3743 (ctx
->in_group
? OFPR_GROUP
3744 : ctx
->in_action_set
? OFPR_ACTION_SET
3752 if (port
!= ctx
->xin
->flow
.in_port
.ofp_port
) {
3753 compose_output_action(ctx
, port
, NULL
);
3755 xlate_report(ctx
, "skipping output to input port");
3760 if (prev_nf_output_iface
== NF_OUT_FLOOD
) {
3761 ctx
->nf_output_iface
= NF_OUT_FLOOD
;
3762 } else if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
3763 ctx
->nf_output_iface
= prev_nf_output_iface
;
3764 } else if (prev_nf_output_iface
!= NF_OUT_DROP
&&
3765 ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
3766 ctx
->nf_output_iface
= NF_OUT_MULTI
;
3771 xlate_output_reg_action(struct xlate_ctx
*ctx
,
3772 const struct ofpact_output_reg
*or)
3774 uint64_t port
= mf_get_subfield(&or->src
, &ctx
->xin
->flow
);
3775 if (port
<= UINT16_MAX
) {
3776 union mf_subvalue value
;
3778 memset(&value
, 0xff, sizeof value
);
3779 mf_write_subfield_flow(&or->src
, &value
, &ctx
->wc
->masks
);
3780 xlate_output_action(ctx
, u16_to_ofp(port
),
3781 or->max_len
, false);
3786 xlate_enqueue_action(struct xlate_ctx
*ctx
,
3787 const struct ofpact_enqueue
*enqueue
)
3789 ofp_port_t ofp_port
= enqueue
->port
;
3790 uint32_t queue_id
= enqueue
->queue
;
3791 uint32_t flow_priority
, priority
;
3794 /* Translate queue to priority. */
3795 error
= dpif_queue_to_priority(ctx
->xbridge
->dpif
, queue_id
, &priority
);
3797 /* Fall back to ordinary output action. */
3798 xlate_output_action(ctx
, enqueue
->port
, 0, false);
3802 /* Check output port. */
3803 if (ofp_port
== OFPP_IN_PORT
) {
3804 ofp_port
= ctx
->xin
->flow
.in_port
.ofp_port
;
3805 } else if (ofp_port
== ctx
->xin
->flow
.in_port
.ofp_port
) {
3809 /* Add datapath actions. */
3810 flow_priority
= ctx
->xin
->flow
.skb_priority
;
3811 ctx
->xin
->flow
.skb_priority
= priority
;
3812 compose_output_action(ctx
, ofp_port
, NULL
);
3813 ctx
->xin
->flow
.skb_priority
= flow_priority
;
3815 /* Update NetFlow output port. */
3816 if (ctx
->nf_output_iface
== NF_OUT_DROP
) {
3817 ctx
->nf_output_iface
= ofp_port
;
3818 } else if (ctx
->nf_output_iface
!= NF_OUT_FLOOD
) {
3819 ctx
->nf_output_iface
= NF_OUT_MULTI
;
3824 xlate_set_queue_action(struct xlate_ctx
*ctx
, uint32_t queue_id
)
3826 uint32_t skb_priority
;
3828 if (!dpif_queue_to_priority(ctx
->xbridge
->dpif
, queue_id
, &skb_priority
)) {
3829 ctx
->xin
->flow
.skb_priority
= skb_priority
;
3831 /* Couldn't translate queue to a priority. Nothing to do. A warning
3832 * has already been logged. */
3837 slave_enabled_cb(ofp_port_t ofp_port
, void *xbridge_
)
3839 const struct xbridge
*xbridge
= xbridge_
;
3850 case OFPP_CONTROLLER
: /* Not supported by the bundle action. */
3853 port
= get_ofp_port(xbridge
, ofp_port
);
3854 return port
? port
->may_enable
: false;
3859 xlate_bundle_action(struct xlate_ctx
*ctx
,
3860 const struct ofpact_bundle
*bundle
)
3864 port
= bundle_execute(bundle
, &ctx
->xin
->flow
, ctx
->wc
, slave_enabled_cb
,
3865 CONST_CAST(struct xbridge
*, ctx
->xbridge
));
3866 if (bundle
->dst
.field
) {
3867 nxm_reg_load(&bundle
->dst
, ofp_to_u16(port
), &ctx
->xin
->flow
, ctx
->wc
);
3869 xlate_output_action(ctx
, port
, 0, false);
3874 xlate_learn_action__(struct xlate_ctx
*ctx
, const struct ofpact_learn
*learn
,
3875 struct ofputil_flow_mod
*fm
, struct ofpbuf
*ofpacts
)
3877 learn_execute(learn
, &ctx
->xin
->flow
, fm
, ofpacts
);
3878 if (ctx
->xin
->may_learn
) {
3879 ofproto_dpif_flow_mod(ctx
->xbridge
->ofproto
, fm
);
3884 xlate_learn_action(struct xlate_ctx
*ctx
, const struct ofpact_learn
*learn
)
3886 learn_mask(learn
, ctx
->wc
);
3888 if (ctx
->xin
->xcache
) {
3889 struct xc_entry
*entry
;
3891 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_LEARN
);
3892 entry
->u
.learn
.ofproto
= ctx
->xbridge
->ofproto
;
3893 entry
->u
.learn
.fm
= xmalloc(sizeof *entry
->u
.learn
.fm
);
3894 entry
->u
.learn
.ofpacts
= ofpbuf_new(64);
3895 xlate_learn_action__(ctx
, learn
, entry
->u
.learn
.fm
,
3896 entry
->u
.learn
.ofpacts
);
3897 } else if (ctx
->xin
->may_learn
) {
3898 uint64_t ofpacts_stub
[1024 / 8];
3899 struct ofputil_flow_mod fm
;
3900 struct ofpbuf ofpacts
;
3902 ofpbuf_use_stub(&ofpacts
, ofpacts_stub
, sizeof ofpacts_stub
);
3903 xlate_learn_action__(ctx
, learn
, &fm
, &ofpacts
);
3904 ofpbuf_uninit(&ofpacts
);
3909 xlate_fin_timeout__(struct rule_dpif
*rule
, uint16_t tcp_flags
,
3910 uint16_t idle_timeout
, uint16_t hard_timeout
)
3912 if (tcp_flags
& (TCP_FIN
| TCP_RST
)) {
3913 rule_dpif_reduce_timeouts(rule
, idle_timeout
, hard_timeout
);
3918 xlate_fin_timeout(struct xlate_ctx
*ctx
,
3919 const struct ofpact_fin_timeout
*oft
)
3922 xlate_fin_timeout__(ctx
->rule
, ctx
->xin
->tcp_flags
,
3923 oft
->fin_idle_timeout
, oft
->fin_hard_timeout
);
3924 if (ctx
->xin
->xcache
) {
3925 struct xc_entry
*entry
;
3927 entry
= xlate_cache_add_entry(ctx
->xin
->xcache
, XC_FIN_TIMEOUT
);
3928 /* XC_RULE already holds a reference on the rule, none is taken
3930 entry
->u
.fin
.rule
= ctx
->rule
;
3931 entry
->u
.fin
.idle
= oft
->fin_idle_timeout
;
3932 entry
->u
.fin
.hard
= oft
->fin_hard_timeout
;
3938 xlate_sample_action(struct xlate_ctx
*ctx
,
3939 const struct ofpact_sample
*os
)
3941 /* Scale the probability from 16-bit to 32-bit while representing
3942 * the same percentage. */
3943 uint32_t probability
= (os
->probability
<< 16) | os
->probability
;
3945 if (!ctx
->xbridge
->support
.variable_length_userdata
) {
3946 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
3948 VLOG_ERR_RL(&rl
, "ignoring NXAST_SAMPLE action because datapath "
3949 "lacks support (needs Linux 3.10+ or kernel module from "
3954 xlate_commit_actions(ctx
);
3956 union user_action_cookie cookie
= {
3958 .type
= USER_ACTION_COOKIE_FLOW_SAMPLE
,
3959 .probability
= os
->probability
,
3960 .collector_set_id
= os
->collector_set_id
,
3961 .obs_domain_id
= os
->obs_domain_id
,
3962 .obs_point_id
= os
->obs_point_id
,
3965 compose_sample_action(ctx
, probability
, &cookie
, sizeof cookie
.flow_sample
,
3970 may_receive(const struct xport
*xport
, struct xlate_ctx
*ctx
)
3972 if (xport
->config
& (is_stp(&ctx
->xin
->flow
)
3973 ? OFPUTIL_PC_NO_RECV_STP
3974 : OFPUTIL_PC_NO_RECV
)) {
3978 /* Only drop packets here if both forwarding and learning are
3979 * disabled. If just learning is enabled, we need to have
3980 * OFPP_NORMAL and the learning action have a look at the packet
3981 * before we can drop it. */
3982 if ((!xport_stp_forward_state(xport
) && !xport_stp_learn_state(xport
)) ||
3983 (!xport_rstp_forward_state(xport
) && !xport_rstp_learn_state(xport
))) {
3991 xlate_write_actions(struct xlate_ctx
*ctx
, const struct ofpact
*a
)
3993 const struct ofpact_nest
*on
= ofpact_get_WRITE_ACTIONS(a
);
3994 size_t on_len
= ofpact_nest_get_action_len(on
);
3995 const struct ofpact
*inner
;
3997 /* Maintain actset_output depending on the contents of the action set:
3999 * - OFPP_UNSET, if there is no "output" action.
4001 * - The output port, if there is an "output" action and no "group"
4004 * - OFPP_UNSET, if there is a "group" action.
4006 if (!ctx
->action_set_has_group
) {
4007 OFPACT_FOR_EACH (inner
, on
->actions
, on_len
) {
4008 if (inner
->type
== OFPACT_OUTPUT
) {
4009 ctx
->xin
->flow
.actset_output
= ofpact_get_OUTPUT(inner
)->port
;
4010 } else if (inner
->type
== OFPACT_GROUP
) {
4011 ctx
->xin
->flow
.actset_output
= OFPP_UNSET
;
4012 ctx
->action_set_has_group
= true;
4018 ofpbuf_put(&ctx
->action_set
, on
->actions
, on_len
);
4019 ofpact_pad(&ctx
->action_set
);
4023 xlate_action_set(struct xlate_ctx
*ctx
)
4025 uint64_t action_list_stub
[1024 / 64];
4026 struct ofpbuf action_list
;
4028 ctx
->in_action_set
= true;
4029 ofpbuf_use_stub(&action_list
, action_list_stub
, sizeof action_list_stub
);
4030 ofpacts_execute_action_set(&action_list
, &ctx
->action_set
);
4031 /* Clear the action set, as it is not needed any more. */
4032 ofpbuf_clear(&ctx
->action_set
);
4033 do_xlate_actions(action_list
.data
, action_list
.size
, ctx
);
4034 ctx
->in_action_set
= false;
4035 ofpbuf_uninit(&action_list
);
4039 recirc_put_unroll_xlate(struct xlate_ctx
*ctx
)
4041 struct ofpact_unroll_xlate
*unroll
;
4043 unroll
= ctx
->last_unroll_offset
< 0
4045 : ALIGNED_CAST(struct ofpact_unroll_xlate
*,
4046 (char *)ctx
->action_set
.data
+ ctx
->last_unroll_offset
);
4048 /* Restore the table_id and rule cookie for a potential PACKET
4051 (ctx
->table_id
!= unroll
->rule_table_id
4052 || ctx
->rule_cookie
!= unroll
->rule_cookie
)) {
4054 ctx
->last_unroll_offset
= ctx
->action_set
.size
;
4055 unroll
= ofpact_put_UNROLL_XLATE(&ctx
->action_set
);
4056 unroll
->rule_table_id
= ctx
->table_id
;
4057 unroll
->rule_cookie
= ctx
->rule_cookie
;
4062 /* Copy remaining actions to the action_set to be executed after recirculation.
4063 * UNROLL_XLATE action is inserted, if not already done so, before actions that
4064 * may generate PACKET_INs from the current table and without matching another
4067 recirc_unroll_actions(const struct ofpact
*ofpacts
, size_t ofpacts_len
,
4068 struct xlate_ctx
*ctx
)
4070 const struct ofpact
*a
;
4072 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
4074 /* May generate PACKET INs. */
4075 case OFPACT_OUTPUT_REG
:
4078 case OFPACT_CONTROLLER
:
4079 case OFPACT_DEC_MPLS_TTL
:
4080 case OFPACT_DEC_TTL
:
4081 recirc_put_unroll_xlate(ctx
);
4084 /* These may not generate PACKET INs. */
4085 case OFPACT_SET_TUNNEL
:
4086 case OFPACT_REG_MOVE
:
4087 case OFPACT_SET_FIELD
:
4088 case OFPACT_STACK_PUSH
:
4089 case OFPACT_STACK_POP
:
4091 case OFPACT_WRITE_METADATA
:
4092 case OFPACT_RESUBMIT
: /* May indirectly generate PACKET INs, */
4093 case OFPACT_GOTO_TABLE
: /* but from a different table and rule. */
4094 case OFPACT_ENQUEUE
:
4095 case OFPACT_SET_VLAN_VID
:
4096 case OFPACT_SET_VLAN_PCP
:
4097 case OFPACT_STRIP_VLAN
:
4098 case OFPACT_PUSH_VLAN
:
4099 case OFPACT_SET_ETH_SRC
:
4100 case OFPACT_SET_ETH_DST
:
4101 case OFPACT_SET_IPV4_SRC
:
4102 case OFPACT_SET_IPV4_DST
:
4103 case OFPACT_SET_IP_DSCP
:
4104 case OFPACT_SET_IP_ECN
:
4105 case OFPACT_SET_IP_TTL
:
4106 case OFPACT_SET_L4_SRC_PORT
:
4107 case OFPACT_SET_L4_DST_PORT
:
4108 case OFPACT_SET_QUEUE
:
4109 case OFPACT_POP_QUEUE
:
4110 case OFPACT_PUSH_MPLS
:
4111 case OFPACT_POP_MPLS
:
4112 case OFPACT_SET_MPLS_LABEL
:
4113 case OFPACT_SET_MPLS_TC
:
4114 case OFPACT_SET_MPLS_TTL
:
4115 case OFPACT_MULTIPATH
:
4118 case OFPACT_UNROLL_XLATE
:
4119 case OFPACT_FIN_TIMEOUT
:
4120 case OFPACT_CLEAR_ACTIONS
:
4121 case OFPACT_WRITE_ACTIONS
:
4124 case OFPACT_DEBUG_RECIRC
:
4128 /* These need not be copied for restoration. */
4130 case OFPACT_CONJUNCTION
:
4133 /* Copy the action over. */
4134 ofpbuf_put(&ctx
->action_set
, a
, OFPACT_ALIGN(a
->len
));
4138 #define CHECK_MPLS_RECIRCULATION() \
4139 if (ctx->was_mpls) { \
4140 ctx_trigger_recirculation(ctx); \
4143 #define CHECK_MPLS_RECIRCULATION_IF(COND) \
4145 CHECK_MPLS_RECIRCULATION(); \
4149 compose_conntrack_action(struct xlate_ctx
*ctx
, struct ofpact_conntrack
*ofc
)
4154 /* Ensure that any prior actions are applied before composing the new
4155 * conntrack action. */
4156 xlate_commit_actions(ctx
);
4158 if (ofc
->zone_src
.field
) {
4159 zone
= mf_get_subfield(&ofc
->zone_src
, &ctx
->xin
->flow
);
4161 zone
= ofc
->zone_imm
;
4164 ct_offset
= nl_msg_start_nested(ctx
->odp_actions
, OVS_ACTION_ATTR_CT
);
4165 if (ofc
->flags
& NX_CT_F_COMMIT
) {
4166 nl_msg_put_flag(ctx
->odp_actions
, OVS_CT_ATTR_COMMIT
);
4168 nl_msg_put_u16(ctx
->odp_actions
, OVS_CT_ATTR_ZONE
, zone
);
4169 nl_msg_end_nested(ctx
->odp_actions
, ct_offset
);
4171 if (ofc
->recirc_table
== NX_CT_RECIRC_NONE
) {
4172 /* If we do not recirculate as part of this action, hide the results of
4173 * connection tracking from subsequent recirculations. */
4174 ctx
->conntracked
= false;
4176 /* Use ct_* fields from datapath during recirculation upcall. */
4177 ctx
->conntracked
= true;
4178 ctx_trigger_recirculation(ctx
);
4179 compose_recirculate_action__(ctx
, ofc
->recirc_table
);
4184 do_xlate_actions(const struct ofpact
*ofpacts
, size_t ofpacts_len
,
4185 struct xlate_ctx
*ctx
)
4187 struct flow_wildcards
*wc
= ctx
->wc
;
4188 struct flow
*flow
= &ctx
->xin
->flow
;
4189 const struct ofpact
*a
;
4191 if (ovs_native_tunneling_is_on(ctx
->xbridge
->ofproto
)) {
4192 tnl_arp_snoop(flow
, wc
, ctx
->xbridge
->name
);
4193 tnl_nd_snoop(flow
, wc
, ctx
->xbridge
->name
);
4195 /* dl_type already in the mask, not set below. */
4197 OFPACT_FOR_EACH (a
, ofpacts
, ofpacts_len
) {
4198 struct ofpact_controller
*controller
;
4199 const struct ofpact_metadata
*metadata
;
4200 const struct ofpact_set_field
*set_field
;
4201 const struct mf_field
*mf
;
4204 /* Check if need to store the remaining actions for later
4206 if (exit_recirculates(ctx
)) {
4207 recirc_unroll_actions(a
, OFPACT_ALIGN(ofpacts_len
-
4209 (uint8_t *)ofpacts
)),
4217 xlate_output_action(ctx
, ofpact_get_OUTPUT(a
)->port
,
4218 ofpact_get_OUTPUT(a
)->max_len
, true);
4222 if (xlate_group_action(ctx
, ofpact_get_GROUP(a
)->group_id
)) {
4223 /* Group could not be found. */
4228 case OFPACT_CONTROLLER
:
4229 controller
= ofpact_get_CONTROLLER(a
);
4230 execute_controller_action(ctx
, controller
->max_len
,
4232 controller
->controller_id
);
4235 case OFPACT_ENQUEUE
:
4236 memset(&wc
->masks
.skb_priority
, 0xff,
4237 sizeof wc
->masks
.skb_priority
);
4238 xlate_enqueue_action(ctx
, ofpact_get_ENQUEUE(a
));
4241 case OFPACT_SET_VLAN_VID
:
4242 wc
->masks
.vlan_tci
|= htons(VLAN_VID_MASK
| VLAN_CFI
);
4243 if (flow
->vlan_tci
& htons(VLAN_CFI
) ||
4244 ofpact_get_SET_VLAN_VID(a
)->push_vlan_if_needed
) {
4245 flow
->vlan_tci
&= ~htons(VLAN_VID_MASK
);
4246 flow
->vlan_tci
|= (htons(ofpact_get_SET_VLAN_VID(a
)->vlan_vid
)
4251 case OFPACT_SET_VLAN_PCP
:
4252 wc
->masks
.vlan_tci
|= htons(VLAN_PCP_MASK
| VLAN_CFI
);
4253 if (flow
->vlan_tci
& htons(VLAN_CFI
) ||
4254 ofpact_get_SET_VLAN_PCP(a
)->push_vlan_if_needed
) {
4255 flow
->vlan_tci
&= ~htons(VLAN_PCP_MASK
);
4256 flow
->vlan_tci
|= htons((ofpact_get_SET_VLAN_PCP(a
)->vlan_pcp
4257 << VLAN_PCP_SHIFT
) | VLAN_CFI
);
4261 case OFPACT_STRIP_VLAN
:
4262 memset(&wc
->masks
.vlan_tci
, 0xff, sizeof wc
->masks
.vlan_tci
);
4263 flow
->vlan_tci
= htons(0);
4266 case OFPACT_PUSH_VLAN
:
4267 /* XXX 802.1AD(QinQ) */
4268 memset(&wc
->masks
.vlan_tci
, 0xff, sizeof wc
->masks
.vlan_tci
);
4269 flow
->vlan_tci
= htons(VLAN_CFI
);
4272 case OFPACT_SET_ETH_SRC
:
4273 WC_MASK_FIELD(wc
, dl_src
);
4274 flow
->dl_src
= ofpact_get_SET_ETH_SRC(a
)->mac
;
4277 case OFPACT_SET_ETH_DST
:
4278 WC_MASK_FIELD(wc
, dl_dst
);
4279 flow
->dl_dst
= ofpact_get_SET_ETH_DST(a
)->mac
;
4282 case OFPACT_SET_IPV4_SRC
:
4283 CHECK_MPLS_RECIRCULATION();
4284 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
4285 memset(&wc
->masks
.nw_src
, 0xff, sizeof wc
->masks
.nw_src
);
4286 flow
->nw_src
= ofpact_get_SET_IPV4_SRC(a
)->ipv4
;
4290 case OFPACT_SET_IPV4_DST
:
4291 CHECK_MPLS_RECIRCULATION();
4292 if (flow
->dl_type
== htons(ETH_TYPE_IP
)) {
4293 memset(&wc
->masks
.nw_dst
, 0xff, sizeof wc
->masks
.nw_dst
);
4294 flow
->nw_dst
= ofpact_get_SET_IPV4_DST(a
)->ipv4
;
4298 case OFPACT_SET_IP_DSCP
:
4299 CHECK_MPLS_RECIRCULATION();
4300 if (is_ip_any(flow
)) {
4301 wc
->masks
.nw_tos
|= IP_DSCP_MASK
;
4302 flow
->nw_tos
&= ~IP_DSCP_MASK
;
4303 flow
->nw_tos
|= ofpact_get_SET_IP_DSCP(a
)->dscp
;
4307 case OFPACT_SET_IP_ECN
:
4308 CHECK_MPLS_RECIRCULATION();
4309 if (is_ip_any(flow
)) {
4310 wc
->masks
.nw_tos
|= IP_ECN_MASK
;
4311 flow
->nw_tos
&= ~IP_ECN_MASK
;
4312 flow
->nw_tos
|= ofpact_get_SET_IP_ECN(a
)->ecn
;
4316 case OFPACT_SET_IP_TTL
:
4317 CHECK_MPLS_RECIRCULATION();
4318 if (is_ip_any(flow
)) {
4319 wc
->masks
.nw_ttl
= 0xff;
4320 flow
->nw_ttl
= ofpact_get_SET_IP_TTL(a
)->ttl
;
4324 case OFPACT_SET_L4_SRC_PORT
:
4325 CHECK_MPLS_RECIRCULATION();
4326 if (is_ip_any(flow
) && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
4327 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
4328 memset(&wc
->masks
.tp_src
, 0xff, sizeof wc
->masks
.tp_src
);
4329 flow
->tp_src
= htons(ofpact_get_SET_L4_SRC_PORT(a
)->port
);
4333 case OFPACT_SET_L4_DST_PORT
:
4334 CHECK_MPLS_RECIRCULATION();
4335 if (is_ip_any(flow
) && !(flow
->nw_frag
& FLOW_NW_FRAG_LATER
)) {
4336 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
4337 memset(&wc
->masks
.tp_dst
, 0xff, sizeof wc
->masks
.tp_dst
);
4338 flow
->tp_dst
= htons(ofpact_get_SET_L4_DST_PORT(a
)->port
);
4342 case OFPACT_RESUBMIT
:
4343 xlate_ofpact_resubmit(ctx
, ofpact_get_RESUBMIT(a
));
4346 case OFPACT_SET_TUNNEL
:
4347 flow
->tunnel
.tun_id
= htonll(ofpact_get_SET_TUNNEL(a
)->tun_id
);
4350 case OFPACT_SET_QUEUE
:
4351 memset(&wc
->masks
.skb_priority
, 0xff,
4352 sizeof wc
->masks
.skb_priority
);
4353 xlate_set_queue_action(ctx
, ofpact_get_SET_QUEUE(a
)->queue_id
);
4356 case OFPACT_POP_QUEUE
:
4357 memset(&wc
->masks
.skb_priority
, 0xff,
4358 sizeof wc
->masks
.skb_priority
);
4359 flow
->skb_priority
= ctx
->orig_skb_priority
;
4362 case OFPACT_REG_MOVE
:
4363 CHECK_MPLS_RECIRCULATION_IF(
4364 mf_is_l3_or_higher(ofpact_get_REG_MOVE(a
)->dst
.field
) ||
4365 mf_is_l3_or_higher(ofpact_get_REG_MOVE(a
)->src
.field
));
4366 nxm_execute_reg_move(ofpact_get_REG_MOVE(a
), flow
, wc
);
4369 case OFPACT_SET_FIELD
:
4370 CHECK_MPLS_RECIRCULATION_IF(
4371 mf_is_l3_or_higher(ofpact_get_SET_FIELD(a
)->field
));
4372 set_field
= ofpact_get_SET_FIELD(a
);
4373 mf
= set_field
->field
;
4375 /* Set field action only ever overwrites packet's outermost
4376 * applicable header fields. Do nothing if no header exists. */
4377 if (mf
->id
== MFF_VLAN_VID
) {
4378 wc
->masks
.vlan_tci
|= htons(VLAN_CFI
);
4379 if (!(flow
->vlan_tci
& htons(VLAN_CFI
))) {
4382 } else if ((mf
->id
== MFF_MPLS_LABEL
|| mf
->id
== MFF_MPLS_TC
)
4383 /* 'dl_type' is already unwildcarded. */
4384 && !eth_type_mpls(flow
->dl_type
)) {
4387 /* A flow may wildcard nw_frag. Do nothing if setting a trasport
4388 * header field on a packet that does not have them. */
4389 mf_mask_field_and_prereqs(mf
, wc
);
4390 if (mf_are_prereqs_ok(mf
, flow
)) {
4391 mf_set_flow_value_masked(mf
, &set_field
->value
,
4392 &set_field
->mask
, flow
);
4396 case OFPACT_STACK_PUSH
:
4397 CHECK_MPLS_RECIRCULATION_IF(
4398 mf_is_l3_or_higher(ofpact_get_STACK_PUSH(a
)->subfield
.field
));
4399 nxm_execute_stack_push(ofpact_get_STACK_PUSH(a
), flow
, wc
,
4403 case OFPACT_STACK_POP
:
4404 CHECK_MPLS_RECIRCULATION_IF(
4405 mf_is_l3_or_higher(ofpact_get_STACK_POP(a
)->subfield
.field
));
4406 nxm_execute_stack_pop(ofpact_get_STACK_POP(a
), flow
, wc
,
4410 case OFPACT_PUSH_MPLS
:
4411 /* Recirculate if it is an IP packet with a zero ttl. This may
4412 * indicate that the packet was previously MPLS and an MPLS pop
4413 * action converted it to IP. In this case recirculating should
4414 * reveal the IP TTL which is used as the basis for a new MPLS
4416 CHECK_MPLS_RECIRCULATION_IF(
4417 !flow_count_mpls_labels(flow
, wc
)
4418 && flow
->nw_ttl
== 0
4419 && is_ip_any(flow
));
4420 compose_mpls_push_action(ctx
, ofpact_get_PUSH_MPLS(a
));
4423 case OFPACT_POP_MPLS
:
4424 CHECK_MPLS_RECIRCULATION();
4425 compose_mpls_pop_action(ctx
, ofpact_get_POP_MPLS(a
)->ethertype
);
4428 case OFPACT_SET_MPLS_LABEL
:
4429 CHECK_MPLS_RECIRCULATION();
4430 compose_set_mpls_label_action(
4431 ctx
, ofpact_get_SET_MPLS_LABEL(a
)->label
);
4434 case OFPACT_SET_MPLS_TC
:
4435 CHECK_MPLS_RECIRCULATION();
4436 compose_set_mpls_tc_action(ctx
, ofpact_get_SET_MPLS_TC(a
)->tc
);
4439 case OFPACT_SET_MPLS_TTL
:
4440 CHECK_MPLS_RECIRCULATION();
4441 compose_set_mpls_ttl_action(ctx
, ofpact_get_SET_MPLS_TTL(a
)->ttl
);
4444 case OFPACT_DEC_MPLS_TTL
:
4445 CHECK_MPLS_RECIRCULATION();
4446 if (compose_dec_mpls_ttl_action(ctx
)) {
4451 case OFPACT_DEC_TTL
:
4452 CHECK_MPLS_RECIRCULATION();
4453 wc
->masks
.nw_ttl
= 0xff;
4454 if (compose_dec_ttl(ctx
, ofpact_get_DEC_TTL(a
))) {
4460 /* Nothing to do. */
4463 case OFPACT_MULTIPATH
:
4464 CHECK_MPLS_RECIRCULATION();
4465 multipath_execute(ofpact_get_MULTIPATH(a
), flow
, wc
);
4469 CHECK_MPLS_RECIRCULATION();
4470 xlate_bundle_action(ctx
, ofpact_get_BUNDLE(a
));
4473 case OFPACT_OUTPUT_REG
:
4474 xlate_output_reg_action(ctx
, ofpact_get_OUTPUT_REG(a
));
4478 CHECK_MPLS_RECIRCULATION();
4479 xlate_learn_action(ctx
, ofpact_get_LEARN(a
));
4482 case OFPACT_CONJUNCTION
: {
4483 /* A flow with a "conjunction" action represents part of a special
4484 * kind of "set membership match". Such a flow should not actually
4485 * get executed, but it could via, say, a "packet-out", even though
4486 * that wouldn't be useful. Log it to help debugging. */
4487 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
4488 VLOG_INFO_RL(&rl
, "executing no-op conjunction action");
4496 case OFPACT_UNROLL_XLATE
: {
4497 struct ofpact_unroll_xlate
*unroll
= ofpact_get_UNROLL_XLATE(a
);
4499 /* Restore translation context data that was stored earlier. */
4500 ctx
->table_id
= unroll
->rule_table_id
;
4501 ctx
->rule_cookie
= unroll
->rule_cookie
;
4504 case OFPACT_FIN_TIMEOUT
:
4505 CHECK_MPLS_RECIRCULATION();
4506 memset(&wc
->masks
.nw_proto
, 0xff, sizeof wc
->masks
.nw_proto
);
4507 xlate_fin_timeout(ctx
, ofpact_get_FIN_TIMEOUT(a
));
4510 case OFPACT_CLEAR_ACTIONS
:
4511 ofpbuf_clear(&ctx
->action_set
);
4512 ctx
->xin
->flow
.actset_output
= OFPP_UNSET
;
4513 ctx
->action_set_has_group
= false;
4516 case OFPACT_WRITE_ACTIONS
:
4517 xlate_write_actions(ctx
, a
);
4520 case OFPACT_WRITE_METADATA
:
4521 metadata
= ofpact_get_WRITE_METADATA(a
);
4522 flow
->metadata
&= ~metadata
->mask
;
4523 flow
->metadata
|= metadata
->metadata
& metadata
->mask
;
4527 /* Not implemented yet. */
4530 case OFPACT_GOTO_TABLE
: {
4531 struct ofpact_goto_table
*ogt
= ofpact_get_GOTO_TABLE(a
);
4533 /* Allow ctx->table_id == TBL_INTERNAL, which will be greater
4534 * than ogt->table_id. This is to allow goto_table actions that
4535 * triggered recirculation: ctx->table_id will be TBL_INTERNAL
4536 * after recirculation. */
4537 ovs_assert(ctx
->table_id
== TBL_INTERNAL
4538 || ctx
->table_id
< ogt
->table_id
);
4539 xlate_table_action(ctx
, ctx
->xin
->flow
.in_port
.ofp_port
,
4540 ogt
->table_id
, true, true);
4545 xlate_sample_action(ctx
, ofpact_get_SAMPLE(a
));
4549 CHECK_MPLS_RECIRCULATION();
4550 compose_conntrack_action(ctx
, ofpact_get_CT(a
));
4553 case OFPACT_DEBUG_RECIRC
:
4554 ctx_trigger_recirculation(ctx
);
4559 /* Check if need to store this and the remaining actions for later
4561 if (ctx
->exit
&& ctx_first_recirculation_action(ctx
)) {
4562 recirc_unroll_actions(a
, OFPACT_ALIGN(ofpacts_len
-
4564 (uint8_t *)ofpacts
)),
4572 xlate_in_init(struct xlate_in
*xin
, struct ofproto_dpif
*ofproto
,
4573 const struct flow
*flow
, ofp_port_t in_port
,
4574 struct rule_dpif
*rule
, uint16_t tcp_flags
,
4575 const struct dp_packet
*packet
, struct flow_wildcards
*wc
,
4576 struct ofpbuf
*odp_actions
)
4578 xin
->ofproto
= ofproto
;
4580 xin
->flow
.in_port
.ofp_port
= in_port
;
4581 xin
->flow
.actset_output
= OFPP_UNSET
;
4582 xin
->packet
= packet
;
4583 xin
->may_learn
= packet
!= NULL
;
4586 xin
->ofpacts
= NULL
;
4587 xin
->ofpacts_len
= 0;
4588 xin
->tcp_flags
= tcp_flags
;
4589 xin
->resubmit_hook
= NULL
;
4590 xin
->report_hook
= NULL
;
4591 xin
->resubmit_stats
= NULL
;
4595 xin
->odp_actions
= odp_actions
;
4597 /* Do recirc lookup. */
4598 xin
->recirc
= flow
->recirc_id
4599 ? recirc_id_node_find(flow
->recirc_id
)
4604 xlate_out_uninit(struct xlate_out
*xout
)
4607 xlate_out_free_recircs(xout
);
4611 /* Translates the 'ofpacts_len' bytes of "struct ofpact"s starting at 'ofpacts'
4612 * into datapath actions, using 'ctx', and discards the datapath actions. */
4614 xlate_actions_for_side_effects(struct xlate_in
*xin
)
4616 struct xlate_out xout
;
4618 xlate_actions(xin
, &xout
);
4619 xlate_out_uninit(&xout
);
4622 static struct skb_priority_to_dscp
*
4623 get_skb_priority(const struct xport
*xport
, uint32_t skb_priority
)
4625 struct skb_priority_to_dscp
*pdscp
;
4628 hash
= hash_int(skb_priority
, 0);
4629 HMAP_FOR_EACH_IN_BUCKET (pdscp
, hmap_node
, hash
, &xport
->skb_priorities
) {
4630 if (pdscp
->skb_priority
== skb_priority
) {
4638 dscp_from_skb_priority(const struct xport
*xport
, uint32_t skb_priority
,
4641 struct skb_priority_to_dscp
*pdscp
= get_skb_priority(xport
, skb_priority
);
4642 *dscp
= pdscp
? pdscp
->dscp
: 0;
4643 return pdscp
!= NULL
;
4647 count_skb_priorities(const struct xport
*xport
)
4649 return hmap_count(&xport
->skb_priorities
);
4653 clear_skb_priorities(struct xport
*xport
)
4655 struct skb_priority_to_dscp
*pdscp
, *next
;
4657 HMAP_FOR_EACH_SAFE (pdscp
, next
, hmap_node
, &xport
->skb_priorities
) {
4658 hmap_remove(&xport
->skb_priorities
, &pdscp
->hmap_node
);
4664 actions_output_to_local_port(const struct xlate_ctx
*ctx
)
4666 odp_port_t local_odp_port
= ofp_port_to_odp_port(ctx
->xbridge
, OFPP_LOCAL
);
4667 const struct nlattr
*a
;
4670 NL_ATTR_FOR_EACH_UNSAFE (a
, left
, ctx
->odp_actions
->data
,
4671 ctx
->odp_actions
->size
) {
4672 if (nl_attr_type(a
) == OVS_ACTION_ATTR_OUTPUT
4673 && nl_attr_get_odp_port(a
) == local_odp_port
) {
4680 #if defined(__linux__)
4681 /* Returns the maximum number of packets that the Linux kernel is willing to
4682 * queue up internally to certain kinds of software-implemented ports, or the
4683 * default (and rarely modified) value if it cannot be determined. */
4685 netdev_max_backlog(void)
4687 static struct ovsthread_once once
= OVSTHREAD_ONCE_INITIALIZER
;
4688 static int max_backlog
= 1000; /* The normal default value. */
4690 if (ovsthread_once_start(&once
)) {
4691 static const char filename
[] = "/proc/sys/net/core/netdev_max_backlog";
4695 stream
= fopen(filename
, "r");
4697 VLOG_INFO("%s: open failed (%s)", filename
, ovs_strerror(errno
));
4699 if (fscanf(stream
, "%d", &n
) != 1) {
4700 VLOG_WARN("%s: read error", filename
);
4701 } else if (n
<= 100) {
4702 VLOG_WARN("%s: unexpectedly small value %d", filename
, n
);
4708 ovsthread_once_done(&once
);
4710 VLOG_DBG("%s: using %d max_backlog", filename
, max_backlog
);
4716 /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in
4719 count_output_actions(const struct ofpbuf
*odp_actions
)
4721 const struct nlattr
*a
;
4725 NL_ATTR_FOR_EACH_UNSAFE (a
, left
, odp_actions
->data
, odp_actions
->size
) {
4726 if (a
->nla_type
== OVS_ACTION_ATTR_OUTPUT
) {
4732 #endif /* defined(__linux__) */
4734 /* Returns true if 'odp_actions' contains more output actions than the datapath
4735 * can reliably handle in one go. On Linux, this is the value of the
4736 * net.core.netdev_max_backlog sysctl, which limits the maximum number of
4737 * packets that the kernel is willing to queue up for processing while the
4738 * datapath is processing a set of actions. */
4740 too_many_output_actions(const struct ofpbuf
*odp_actions OVS_UNUSED
)
4743 return (odp_actions
->size
/ NL_A_U32_SIZE
> netdev_max_backlog()
4744 && count_output_actions(odp_actions
) > netdev_max_backlog());
4746 /* OSes other than Linux might have similar limits, but we don't know how
4747 * to determine them.*/
4753 xlate_wc_init(struct xlate_ctx
*ctx
)
4755 flow_wildcards_init_catchall(ctx
->wc
);
4757 /* Some fields we consider to always be examined. */
4758 WC_MASK_FIELD(ctx
->wc
, in_port
);
4759 WC_MASK_FIELD(ctx
->wc
, dl_type
);
4760 if (is_ip_any(&ctx
->xin
->flow
)) {
4761 WC_MASK_FIELD_MASK(ctx
->wc
, nw_frag
, FLOW_NW_FRAG_MASK
);
4764 if (ctx
->xbridge
->support
.odp
.recirc
) {
4765 /* Always exactly match recirc_id when datapath supports
4767 WC_MASK_FIELD(ctx
->wc
, recirc_id
);
4770 if (ctx
->xbridge
->netflow
) {
4771 netflow_mask_wc(&ctx
->xin
->flow
, ctx
->wc
);
4774 tnl_wc_init(&ctx
->xin
->flow
, ctx
->wc
);
4778 xlate_wc_finish(struct xlate_ctx
*ctx
)
4780 /* Clear the metadata and register wildcard masks, because we won't
4781 * use non-header fields as part of the cache. */
4782 flow_wildcards_clear_non_packet_fields(ctx
->wc
);
4784 /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow
4785 * uses the low 8 bits of the 16-bit tp_src and tp_dst members to
4786 * represent these fields. The datapath interface, on the other hand,
4787 * represents them with just 8 bits each. This means that if the high
4788 * 8 bits of the masks for these fields somehow become set, then they
4789 * will get chopped off by a round trip through the datapath, and
4790 * revalidation will spot that as an inconsistency and delete the flow.
4791 * Avoid the problem here by making sure that only the low 8 bits of
4792 * either field can be unwildcarded for ICMP.
4794 if (is_icmpv4(&ctx
->xin
->flow
) || is_icmpv6(&ctx
->xin
->flow
)) {
4795 ctx
->wc
->masks
.tp_src
&= htons(UINT8_MAX
);
4796 ctx
->wc
->masks
.tp_dst
&= htons(UINT8_MAX
);
4798 /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */
4799 if (ctx
->wc
->masks
.vlan_tci
) {
4800 ctx
->wc
->masks
.vlan_tci
|= htons(VLAN_CFI
);
4804 /* Translates the flow, actions, or rule in 'xin' into datapath actions in
4806 * The caller must take responsibility for eventually freeing 'xout', with
4807 * xlate_out_uninit(). */
4809 xlate_actions(struct xlate_in
*xin
, struct xlate_out
*xout
)
4811 *xout
= (struct xlate_out
) {
4817 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
4818 struct xbridge
*xbridge
= xbridge_lookup(xcfg
, xin
->ofproto
);
4823 struct flow
*flow
= &xin
->flow
;
4825 union mf_subvalue stack_stub
[1024 / sizeof(union mf_subvalue
)];
4826 uint64_t action_set_stub
[1024 / 8];
4827 struct flow_wildcards scratch_wc
;
4828 uint64_t actions_stub
[256 / 8];
4829 struct ofpbuf scratch_actions
= OFPBUF_STUB_INITIALIZER(actions_stub
);
4830 struct xlate_ctx ctx
= {
4834 .orig_tunnel_ip_dst
= flow
->tunnel
.ip_dst
,
4836 .stack
= OFPBUF_STUB_INITIALIZER(stack_stub
),
4838 .wc
= xin
->wc
? xin
->wc
: &scratch_wc
,
4839 .odp_actions
= xin
->odp_actions
? xin
->odp_actions
: &scratch_actions
,
4841 .recurse
= xin
->recurse
,
4842 .resubmits
= xin
->resubmits
,
4844 .in_action_set
= false,
4847 .rule_cookie
= OVS_BE64_MAX
,
4848 .orig_skb_priority
= flow
->skb_priority
,
4849 .sflow_n_outputs
= 0,
4850 .sflow_odp_port
= 0,
4851 .nf_output_iface
= NF_OUT_DROP
,
4855 .recirc_action_offset
= -1,
4856 .last_unroll_offset
= -1,
4859 .conntracked
= false,
4861 .action_set_has_group
= false,
4862 .action_set
= OFPBUF_STUB_INITIALIZER(action_set_stub
),
4865 /* 'base_flow' reflects the packet as it came in, but we need it to reflect
4866 * the packet as the datapath will treat it for output actions:
4868 * - Our datapath doesn't retain tunneling information without us
4869 * re-setting it, so clear the tunnel data.
4871 * - For VLAN splinters, a higher layer may pretend that the packet
4872 * came in on 'flow->in_port.ofp_port' with 'flow->vlan_tci'
4873 * attached, because that's how we want to treat it from an OpenFlow
4874 * perspective. But from the datapath's perspective it actually came
4875 * in on a VLAN device without any VLAN attached. So here we put the
4876 * datapath's view of the VLAN information in 'base_flow' to ensure
4877 * correct treatment.
4879 memset(&ctx
.base_flow
.tunnel
, 0, sizeof ctx
.base_flow
.tunnel
);
4880 if (flow
->in_port
.ofp_port
4881 != vsp_realdev_to_vlandev(xbridge
->ofproto
,
4882 flow
->in_port
.ofp_port
,
4884 ctx
.base_flow
.vlan_tci
= 0;
4887 ofpbuf_reserve(ctx
.odp_actions
, NL_A_U32_SIZE
);
4889 xlate_wc_init(&ctx
);
4892 COVERAGE_INC(xlate_actions
);
4895 const struct recirc_state
*state
= &xin
->recirc
->state
;
4897 xlate_report(&ctx
, "Restoring state post-recirculation:");
4899 if (xin
->ofpacts_len
> 0 || ctx
.rule
) {
4900 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
4901 const char *conflict
= xin
->ofpacts_len
? "actions" : "rule";
4903 VLOG_WARN_RL(&rl
, "Recirculation conflict (%s)!", conflict
);
4904 xlate_report(&ctx
, "- Recirculation conflict (%s)!", conflict
);
4908 /* Set the bridge for post-recirculation processing if needed. */
4909 if (ctx
.xbridge
->ofproto
!= state
->ofproto
) {
4910 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
4911 const struct xbridge
*new_bridge
4912 = xbridge_lookup(xcfg
, state
->ofproto
);
4914 if (OVS_UNLIKELY(!new_bridge
)) {
4915 /* Drop the packet if the bridge cannot be found. */
4916 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
4917 VLOG_WARN_RL(&rl
, "Recirculation bridge no longer exists.");
4918 xlate_report(&ctx
, "- Recirculation bridge no longer exists.");
4921 ctx
.xbridge
= new_bridge
;
4924 /* Set the post-recirculation table id. Note: A table lookup is done
4925 * only if there are no post-recirculation actions. */
4926 ctx
.table_id
= state
->table_id
;
4927 xlate_report(&ctx
, "- Resuming from table %"PRIu8
, ctx
.table_id
);
4929 if (!state
->conntracked
) {
4930 clear_conntrack(flow
);
4933 /* Restore pipeline metadata. May change flow's in_port and other
4934 * metadata to the values that existed when recirculation was
4936 recirc_metadata_to_flow(&state
->metadata
, flow
);
4938 /* Restore stack, if any. */
4940 ofpbuf_put(&ctx
.stack
, state
->stack
->data
, state
->stack
->size
);
4943 /* Restore mirror state. */
4944 ctx
.mirrors
= state
->mirrors
;
4946 /* Restore action set, if any. */
4947 if (state
->action_set_len
) {
4948 const struct ofpact
*a
;
4950 xlate_report_actions(&ctx
, "- Restoring action set",
4951 state
->ofpacts
, state
->action_set_len
);
4953 ofpbuf_put(&ctx
.action_set
, state
->ofpacts
, state
->action_set_len
);
4955 OFPACT_FOR_EACH(a
, state
->ofpacts
, state
->action_set_len
) {
4956 if (a
->type
== OFPACT_GROUP
) {
4957 ctx
.action_set_has_group
= true;
4963 /* Restore recirculation actions. If there are no actions, processing
4964 * will start with a lookup in the table set above. */
4965 if (state
->ofpacts_len
> state
->action_set_len
) {
4966 xin
->ofpacts_len
= state
->ofpacts_len
- state
->action_set_len
;
4967 xin
->ofpacts
= state
->ofpacts
+
4968 state
->action_set_len
/ sizeof *state
->ofpacts
;
4970 xlate_report_actions(&ctx
, "- Restoring actions",
4971 xin
->ofpacts
, xin
->ofpacts_len
);
4973 } else if (OVS_UNLIKELY(flow
->recirc_id
)) {
4974 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 1);
4976 VLOG_WARN_RL(&rl
, "Recirculation context not found for ID %"PRIx32
,
4980 /* The bridge is now known so obtain its table version. */
4981 ctx
.tables_version
= ofproto_dpif_get_tables_version(ctx
.xbridge
->ofproto
);
4983 if (!xin
->ofpacts
&& !ctx
.rule
) {
4984 ctx
.rule
= rule_dpif_lookup_from_table(
4985 ctx
.xbridge
->ofproto
, ctx
.tables_version
, flow
, xin
->wc
,
4986 ctx
.xin
->resubmit_stats
, &ctx
.table_id
,
4987 flow
->in_port
.ofp_port
, true, true);
4988 if (ctx
.xin
->resubmit_stats
) {
4989 rule_dpif_credit_stats(ctx
.rule
, ctx
.xin
->resubmit_stats
);
4991 if (ctx
.xin
->xcache
) {
4992 struct xc_entry
*entry
;
4994 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_RULE
);
4995 entry
->u
.rule
= ctx
.rule
;
4996 rule_dpif_ref(ctx
.rule
);
4999 if (OVS_UNLIKELY(ctx
.xin
->resubmit_hook
)) {
5000 ctx
.xin
->resubmit_hook(ctx
.xin
, ctx
.rule
, 0);
5003 xout
->fail_open
= ctx
.rule
&& rule_dpif_is_fail_open(ctx
.rule
);
5005 /* Get the proximate input port of the packet. (If xin->recirc,
5006 * flow->in_port is the ultimate input port of the packet.) */
5007 struct xport
*in_port
= get_ofp_port(xbridge
,
5008 ctx
.base_flow
.in_port
.ofp_port
);
5010 /* Tunnel stats only for non-recirculated packets. */
5011 if (!xin
->recirc
&& in_port
&& in_port
->is_tunnel
) {
5012 if (ctx
.xin
->resubmit_stats
) {
5013 netdev_vport_inc_rx(in_port
->netdev
, ctx
.xin
->resubmit_stats
);
5015 bfd_account_rx(in_port
->bfd
, ctx
.xin
->resubmit_stats
);
5018 if (ctx
.xin
->xcache
) {
5019 struct xc_entry
*entry
;
5021 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_NETDEV
);
5022 entry
->u
.dev
.rx
= netdev_ref(in_port
->netdev
);
5023 entry
->u
.dev
.bfd
= bfd_ref(in_port
->bfd
);
5027 if (!xin
->recirc
&& process_special(&ctx
, in_port
)) {
5028 /* process_special() did all the processing for this packet.
5030 * We do not perform special processing on recirculated packets, as
5031 * recirculated packets are not really received by the bridge.*/
5032 } else if (in_port
&& in_port
->xbundle
5033 && xbundle_mirror_out(xbridge
, in_port
->xbundle
)) {
5034 if (ctx
.xin
->packet
!= NULL
) {
5035 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
5036 VLOG_WARN_RL(&rl
, "bridge %s: dropping packet received on port "
5037 "%s, which is reserved exclusively for mirroring",
5038 ctx
.xbridge
->name
, in_port
->xbundle
->name
);
5041 /* Sampling is done only for packets really received by the bridge. */
5042 unsigned int user_cookie_offset
= 0;
5044 user_cookie_offset
= compose_sflow_action(&ctx
);
5045 compose_ipfix_action(&ctx
, ODPP_NONE
);
5047 size_t sample_actions_len
= ctx
.odp_actions
->size
;
5049 if (tnl_process_ecn(flow
)
5050 && (!in_port
|| may_receive(in_port
, &ctx
))) {
5051 const struct ofpact
*ofpacts
;
5055 ofpacts
= xin
->ofpacts
;
5056 ofpacts_len
= xin
->ofpacts_len
;
5057 } else if (ctx
.rule
) {
5058 const struct rule_actions
*actions
5059 = rule_dpif_get_actions(ctx
.rule
);
5060 ofpacts
= actions
->ofpacts
;
5061 ofpacts_len
= actions
->ofpacts_len
;
5062 ctx
.rule_cookie
= rule_dpif_get_flow_cookie(ctx
.rule
);
5067 mirror_ingress_packet(&ctx
);
5068 do_xlate_actions(ofpacts
, ofpacts_len
, &ctx
);
5070 /* We've let OFPP_NORMAL and the learning action look at the
5071 * packet, so drop it now if forwarding is disabled. */
5072 if (in_port
&& (!xport_stp_forward_state(in_port
) ||
5073 !xport_rstp_forward_state(in_port
))) {
5074 /* Drop all actions added by do_xlate_actions() above. */
5075 ctx
.odp_actions
->size
= sample_actions_len
;
5077 /* Undo changes that may have been done for recirculation. */
5078 if (exit_recirculates(&ctx
)) {
5079 ctx
.action_set
.size
= ctx
.recirc_action_offset
;
5080 ctx
.recirc_action_offset
= -1;
5081 ctx
.last_unroll_offset
= -1;
5083 } else if (ctx
.action_set
.size
) {
5084 /* Translate action set only if not dropping the packet and
5085 * not recirculating. */
5086 if (!exit_recirculates(&ctx
)) {
5087 xlate_action_set(&ctx
);
5090 /* Check if need to recirculate. */
5091 if (exit_recirculates(&ctx
)) {
5092 compose_recirculate_action(&ctx
);
5096 /* Output only fully processed packets. */
5097 if (!exit_recirculates(&ctx
)
5098 && xbridge
->has_in_band
5099 && in_band_must_output_to_local_port(flow
)
5100 && !actions_output_to_local_port(&ctx
)) {
5101 compose_output_action(&ctx
, OFPP_LOCAL
, NULL
);
5104 if (user_cookie_offset
) {
5105 fix_sflow_action(&ctx
, user_cookie_offset
);
5109 if (nl_attr_oversized(ctx
.odp_actions
->size
)) {
5110 /* These datapath actions are too big for a Netlink attribute, so we
5111 * can't hand them to the kernel directly. dpif_execute() can execute
5112 * them one by one with help, so just mark the result as SLOW_ACTION to
5113 * prevent the flow from being installed. */
5114 COVERAGE_INC(xlate_actions_oversize
);
5115 ctx
.xout
->slow
|= SLOW_ACTION
;
5116 } else if (too_many_output_actions(ctx
.odp_actions
)) {
5117 COVERAGE_INC(xlate_actions_too_many_output
);
5118 ctx
.xout
->slow
|= SLOW_ACTION
;
5121 /* Do netflow only for packets really received by the bridge and not sent
5122 * to the controller. We consider packets sent to the controller to be
5123 * part of the control plane rather than the data plane. */
5124 if (!xin
->recirc
&& xbridge
->netflow
&& !(xout
->slow
& SLOW_CONTROLLER
)) {
5125 if (ctx
.xin
->resubmit_stats
) {
5126 netflow_flow_update(xbridge
->netflow
, flow
,
5127 ctx
.nf_output_iface
,
5128 ctx
.xin
->resubmit_stats
);
5130 if (ctx
.xin
->xcache
) {
5131 struct xc_entry
*entry
;
5133 entry
= xlate_cache_add_entry(ctx
.xin
->xcache
, XC_NETFLOW
);
5134 entry
->u
.nf
.netflow
= netflow_ref(xbridge
->netflow
);
5135 entry
->u
.nf
.flow
= xmemdup(flow
, sizeof *flow
);
5136 entry
->u
.nf
.iface
= ctx
.nf_output_iface
;
5141 xlate_wc_finish(&ctx
);
5145 ofpbuf_uninit(&ctx
.stack
);
5146 ofpbuf_uninit(&ctx
.action_set
);
5147 ofpbuf_uninit(&scratch_actions
);
5150 /* Sends 'packet' out 'ofport'.
5151 * May modify 'packet'.
5152 * Returns 0 if successful, otherwise a positive errno value. */
5154 xlate_send_packet(const struct ofport_dpif
*ofport
, struct dp_packet
*packet
)
5156 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
5157 struct xport
*xport
;
5158 struct ofpact_output output
;
5161 ofpact_init(&output
.ofpact
, OFPACT_OUTPUT
, sizeof output
);
5162 /* Use OFPP_NONE as the in_port to avoid special packet processing. */
5163 flow_extract(packet
, &flow
);
5164 flow
.in_port
.ofp_port
= OFPP_NONE
;
5166 xport
= xport_lookup(xcfg
, ofport
);
5170 output
.port
= xport
->ofp_port
;
5173 return ofproto_dpif_execute_actions(xport
->xbridge
->ofproto
, &flow
, NULL
,
5174 &output
.ofpact
, sizeof output
,
5178 struct xlate_cache
*
5179 xlate_cache_new(void)
5181 struct xlate_cache
*xcache
= xmalloc(sizeof *xcache
);
5183 ofpbuf_init(&xcache
->entries
, 512);
5187 static struct xc_entry
*
5188 xlate_cache_add_entry(struct xlate_cache
*xcache
, enum xc_type type
)
5190 struct xc_entry
*entry
;
5192 entry
= ofpbuf_put_zeros(&xcache
->entries
, sizeof *entry
);
5199 xlate_cache_netdev(struct xc_entry
*entry
, const struct dpif_flow_stats
*stats
)
5201 if (entry
->u
.dev
.tx
) {
5202 netdev_vport_inc_tx(entry
->u
.dev
.tx
, stats
);
5204 if (entry
->u
.dev
.rx
) {
5205 netdev_vport_inc_rx(entry
->u
.dev
.rx
, stats
);
5207 if (entry
->u
.dev
.bfd
) {
5208 bfd_account_rx(entry
->u
.dev
.bfd
, stats
);
5213 xlate_cache_normal(struct ofproto_dpif
*ofproto
, struct flow
*flow
, int vlan
)
5215 struct xlate_cfg
*xcfg
= ovsrcu_get(struct xlate_cfg
*, &xcfgp
);
5216 struct xbridge
*xbridge
;
5217 struct xbundle
*xbundle
;
5218 struct flow_wildcards wc
;
5220 xbridge
= xbridge_lookup(xcfg
, ofproto
);
5225 xbundle
= lookup_input_bundle(xbridge
, flow
->in_port
.ofp_port
, false,
5231 update_learning_table(xbridge
, flow
, &wc
, vlan
, xbundle
);
5234 /* Push stats and perform side effects of flow translation. */
5236 xlate_push_stats(struct xlate_cache
*xcache
,
5237 const struct dpif_flow_stats
*stats
)
5239 struct xc_entry
*entry
;
5240 struct ofpbuf entries
= xcache
->entries
;
5241 struct eth_addr dmac
;
5243 if (!stats
->n_packets
) {
5247 XC_ENTRY_FOR_EACH (entry
, entries
, xcache
) {
5248 switch (entry
->type
) {
5250 rule_dpif_credit_stats(entry
->u
.rule
, stats
);
5253 bond_account(entry
->u
.bond
.bond
, entry
->u
.bond
.flow
,
5254 entry
->u
.bond
.vid
, stats
->n_bytes
);
5257 xlate_cache_netdev(entry
, stats
);
5260 netflow_flow_update(entry
->u
.nf
.netflow
, entry
->u
.nf
.flow
,
5261 entry
->u
.nf
.iface
, stats
);
5264 mirror_update_stats(entry
->u
.mirror
.mbridge
,
5265 entry
->u
.mirror
.mirrors
,
5266 stats
->n_packets
, stats
->n_bytes
);
5269 ofproto_dpif_flow_mod(entry
->u
.learn
.ofproto
, entry
->u
.learn
.fm
);
5272 xlate_cache_normal(entry
->u
.normal
.ofproto
, entry
->u
.normal
.flow
,
5273 entry
->u
.normal
.vlan
);
5275 case XC_FIN_TIMEOUT
:
5276 xlate_fin_timeout__(entry
->u
.fin
.rule
, stats
->tcp_flags
,
5277 entry
->u
.fin
.idle
, entry
->u
.fin
.hard
);
5280 group_dpif_credit_stats(entry
->u
.group
.group
, entry
->u
.group
.bucket
,
5284 /* Lookup arp to avoid arp timeout. */
5285 tnl_arp_lookup(entry
->u
.tnl_arp_cache
.br_name
,
5286 entry
->u
.tnl_arp_cache
.d_ip
, &dmac
);
5295 xlate_dev_unref(struct xc_entry
*entry
)
5297 if (entry
->u
.dev
.tx
) {
5298 netdev_close(entry
->u
.dev
.tx
);
5300 if (entry
->u
.dev
.rx
) {
5301 netdev_close(entry
->u
.dev
.rx
);
5303 if (entry
->u
.dev
.bfd
) {
5304 bfd_unref(entry
->u
.dev
.bfd
);
5309 xlate_cache_clear_netflow(struct netflow
*netflow
, struct flow
*flow
)
5311 netflow_flow_clear(netflow
, flow
);
5312 netflow_unref(netflow
);
5317 xlate_cache_clear(struct xlate_cache
*xcache
)
5319 struct xc_entry
*entry
;
5320 struct ofpbuf entries
;
5326 XC_ENTRY_FOR_EACH (entry
, entries
, xcache
) {
5327 switch (entry
->type
) {
5329 rule_dpif_unref(entry
->u
.rule
);
5332 free(entry
->u
.bond
.flow
);
5333 bond_unref(entry
->u
.bond
.bond
);
5336 xlate_dev_unref(entry
);
5339 xlate_cache_clear_netflow(entry
->u
.nf
.netflow
, entry
->u
.nf
.flow
);
5342 mbridge_unref(entry
->u
.mirror
.mbridge
);
5345 free(entry
->u
.learn
.fm
);
5346 ofpbuf_delete(entry
->u
.learn
.ofpacts
);
5349 free(entry
->u
.normal
.flow
);
5351 case XC_FIN_TIMEOUT
:
5352 /* 'u.fin.rule' is always already held as a XC_RULE, which
5353 * has already released it's reference above. */
5356 group_dpif_unref(entry
->u
.group
.group
);
5365 ofpbuf_clear(&xcache
->entries
);
5369 xlate_cache_delete(struct xlate_cache
*xcache
)
5371 xlate_cache_clear(xcache
);
5372 ofpbuf_uninit(&xcache
->entries
);