2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
3 * Copyright (c) 2009 InMon Corp.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #include "ofproto-dpif-sflow.h"
21 #include <sys/resource.h>
22 #include <sys/socket.h>
25 #include "collectors.h"
35 #include "poll-loop.h"
36 #include "ovs-router.h"
37 #include "route-table.h"
38 #include "sflow_api.h"
39 #include "socket-util.h"
41 #include "openvswitch/vlog.h"
42 #include "lib/odp-util.h"
43 #include "lib/unaligned.h"
44 #include "ofproto-provider.h"
47 VLOG_DEFINE_THIS_MODULE(sflow
);
49 static struct ovs_mutex mutex
;
51 /* This global var is used to determine which sFlow
52 sub-agent should send the datapath counters. */
53 #define SFLOW_GC_SUBID_UNCLAIMED (uint32_t)-1
54 static uint32_t sflow_global_counters_subid
= SFLOW_GC_SUBID_UNCLAIMED
;
57 * The enum dpif_sflow_tunnel_type is to declare the types supported
59 enum dpif_sflow_tunnel_type
{
60 DPIF_SFLOW_TUNNEL_UNKNOWN
= 0,
61 DPIF_SFLOW_TUNNEL_VXLAN
,
62 DPIF_SFLOW_TUNNEL_GRE
,
63 DPIF_SFLOW_TUNNEL_LISP
,
64 DPIF_SFLOW_TUNNEL_IPSEC_GRE
,
65 DPIF_SFLOW_TUNNEL_GENEVE
68 struct dpif_sflow_port
{
69 struct hmap_node hmap_node
; /* In struct dpif_sflow's "ports" hmap. */
70 SFLDataSource_instance dsi
; /* sFlow library's notion of port number. */
71 struct ofport
*ofport
; /* To retrive port stats. */
73 enum dpif_sflow_tunnel_type tunnel_type
;
77 struct collectors
*collectors
;
78 SFLAgent
*sflow_agent
;
79 struct ofproto_sflow_options
*options
;
81 size_t n_flood
, n_all
;
82 struct hmap ports
; /* Contains "struct dpif_sflow_port"s. */
84 struct ovs_refcount ref_cnt
;
87 static void dpif_sflow_del_port__(struct dpif_sflow
*,
88 struct dpif_sflow_port
*);
90 #define RECEIVER_INDEX 1
92 static struct vlog_rate_limit rl
= VLOG_RATE_LIMIT_INIT(1, 5);
95 nullable_string_is_equal(const char *a
, const char *b
)
97 return a
? b
&& !strcmp(a
, b
) : !b
;
101 ofproto_sflow_options_equal(const struct ofproto_sflow_options
*a
,
102 const struct ofproto_sflow_options
*b
)
104 return (sset_equals(&a
->targets
, &b
->targets
)
105 && a
->sampling_rate
== b
->sampling_rate
106 && a
->polling_interval
== b
->polling_interval
107 && a
->header_len
== b
->header_len
108 && a
->sub_id
== b
->sub_id
109 && nullable_string_is_equal(a
->agent_device
, b
->agent_device
)
110 && nullable_string_is_equal(a
->control_ip
, b
->control_ip
));
113 static struct ofproto_sflow_options
*
114 ofproto_sflow_options_clone(const struct ofproto_sflow_options
*old
)
116 struct ofproto_sflow_options
*new = xmemdup(old
, sizeof *old
);
117 sset_clone(&new->targets
, &old
->targets
);
118 new->agent_device
= old
->agent_device
? xstrdup(old
->agent_device
) : NULL
;
119 new->control_ip
= old
->control_ip
? xstrdup(old
->control_ip
) : NULL
;
124 ofproto_sflow_options_destroy(struct ofproto_sflow_options
*options
)
127 sset_destroy(&options
->targets
);
128 free(options
->agent_device
);
129 free(options
->control_ip
);
134 /* sFlow library callback to allocate memory. */
136 sflow_agent_alloc_cb(void *magic OVS_UNUSED
, SFLAgent
*agent OVS_UNUSED
,
139 return xzalloc(bytes
);
142 /* sFlow library callback to free memory. */
144 sflow_agent_free_cb(void *magic OVS_UNUSED
, SFLAgent
*agent OVS_UNUSED
,
151 /* sFlow library callback to report error. */
153 sflow_agent_error_cb(void *magic OVS_UNUSED
, SFLAgent
*agent OVS_UNUSED
,
156 VLOG_WARN("sFlow agent error: %s", msg
);
159 /* sFlow library callback to send datagram. */
161 sflow_agent_send_packet_cb(void *ds_
, SFLAgent
*agent OVS_UNUSED
,
162 SFLReceiver
*receiver OVS_UNUSED
, u_char
*pkt
,
165 struct dpif_sflow
*ds
= ds_
;
166 collectors_send(ds
->collectors
, pkt
, pktLen
);
169 static struct dpif_sflow_port
*
170 dpif_sflow_find_port(const struct dpif_sflow
*ds
, odp_port_t odp_port
)
173 struct dpif_sflow_port
*dsp
;
175 HMAP_FOR_EACH_IN_BUCKET (dsp
, hmap_node
, hash_odp_port(odp_port
),
177 if (dsp
->odp_port
== odp_port
) {
184 /* Call to get the datapath stats. Modeled after the dpctl utility.
186 * It might be more efficient for this module to be given a handle it can use
187 * to get these stats more efficiently, but this is only going to be called
188 * once every 20-30 seconds. Return number of datapaths found (normally expect
191 sflow_get_dp_stats(struct dpif_sflow
*ds OVS_UNUSED
,
192 struct dpif_dp_stats
*dp_totals
)
198 memset(dp_totals
, 0, sizeof *dp_totals
);
200 dp_enumerate_types(&types
);
201 SSET_FOR_EACH (type
, &types
) {
205 if (dp_enumerate_names(type
, &names
) == 0) {
206 SSET_FOR_EACH (name
, &names
) {
208 if (dpif_open(name
, type
, &dpif
) == 0) {
209 struct dpif_dp_stats dp_stats
;
210 if (dpif_get_dp_stats(dpif
, &dp_stats
) == 0) {
212 dp_totals
->n_hit
+= dp_stats
.n_hit
;
213 dp_totals
->n_missed
+= dp_stats
.n_missed
;
214 dp_totals
->n_lost
+= dp_stats
.n_lost
;
215 dp_totals
->n_flows
+= dp_stats
.n_flows
;
216 dp_totals
->n_mask_hit
+= dp_stats
.n_mask_hit
;
217 dp_totals
->n_masks
+= dp_stats
.n_masks
;
222 sset_destroy(&names
);
225 sset_destroy(&types
);
229 /* If there are multiple bridges defined then we need some
230 minimal artibration to decide which one should send the
231 global counters. This function allows each sub-agent to
232 ask if he should do it or not. */
234 sflow_global_counters_subid_test(uint32_t subid
)
237 if (sflow_global_counters_subid
== SFLOW_GC_SUBID_UNCLAIMED
) {
238 /* The role is up for grabs. */
239 sflow_global_counters_subid
= subid
;
241 return (sflow_global_counters_subid
== subid
);
245 sflow_global_counters_subid_clear(uint32_t subid
)
248 if (sflow_global_counters_subid
== subid
) {
249 /* The sub-agent that was sending global counters
250 is going away, so reset to allow another
252 sflow_global_counters_subid
= SFLOW_GC_SUBID_UNCLAIMED
;
257 sflow_agent_get_global_counters(void *ds_
, SFLPoller
*poller
,
258 SFL_COUNTERS_SAMPLE_TYPE
*cs
)
261 struct dpif_sflow
*ds
= ds_
;
262 SFLCounters_sample_element dp_elem
, res_elem
;
263 struct dpif_dp_stats dp_totals
;
266 if (!sflow_global_counters_subid_test(poller
->agent
->subId
)) {
267 /* Another sub-agent is currently responsible for this. */
272 if (sflow_get_dp_stats(ds
, &dp_totals
)) {
273 dp_elem
.tag
= SFLCOUNTERS_OVSDP
;
274 dp_elem
.counterBlock
.ovsdp
.n_hit
= dp_totals
.n_hit
;
275 dp_elem
.counterBlock
.ovsdp
.n_missed
= dp_totals
.n_missed
;
276 dp_elem
.counterBlock
.ovsdp
.n_lost
= dp_totals
.n_lost
;
277 dp_elem
.counterBlock
.ovsdp
.n_mask_hit
= dp_totals
.n_mask_hit
;
278 dp_elem
.counterBlock
.ovsdp
.n_flows
= dp_totals
.n_flows
;
279 dp_elem
.counterBlock
.ovsdp
.n_masks
= dp_totals
.n_masks
;
280 SFLADD_ELEMENT(cs
, &dp_elem
);
284 getrusage(RUSAGE_SELF
, &usage
);
285 res_elem
.tag
= SFLCOUNTERS_APP_RESOURCES
;
286 res_elem
.counterBlock
.appResources
.user_time
287 = timeval_to_msec(&usage
.ru_utime
);
288 res_elem
.counterBlock
.appResources
.system_time
289 = timeval_to_msec(&usage
.ru_stime
);
290 res_elem
.counterBlock
.appResources
.mem_used
= (usage
.ru_maxrss
* 1024);
291 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.mem_max
);
292 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.fd_open
);
293 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.fd_max
);
294 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.conn_open
);
295 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.conn_max
);
297 SFLADD_ELEMENT(cs
, &res_elem
);
298 sfl_poller_writeCountersSample(poller
, cs
);
302 sflow_agent_get_counters(void *ds_
, SFLPoller
*poller
,
303 SFL_COUNTERS_SAMPLE_TYPE
*cs
)
306 struct dpif_sflow
*ds
= ds_
;
307 SFLCounters_sample_element elem
, lacp_elem
, of_elem
, name_elem
;
308 enum netdev_features current
;
309 struct dpif_sflow_port
*dsp
;
310 SFLIf_counters
*counters
;
311 struct netdev_stats stats
;
312 enum netdev_flags flags
;
313 struct lacp_slave_stats lacp_stats
;
316 dsp
= dpif_sflow_find_port(ds
, u32_to_odp(poller
->bridgePort
));
321 elem
.tag
= SFLCOUNTERS_GENERIC
;
322 counters
= &elem
.counterBlock
.generic
;
323 counters
->ifIndex
= SFL_DS_INDEX(poller
->dsi
);
324 counters
->ifType
= 6;
325 if (!netdev_get_features(dsp
->ofport
->netdev
, ¤t
, NULL
, NULL
, NULL
)) {
326 /* The values of ifDirection come from MAU MIB (RFC 2668): 0 = unknown,
327 1 = full-duplex, 2 = half-duplex, 3 = in, 4=out */
328 counters
->ifSpeed
= netdev_features_to_bps(current
, 0);
329 counters
->ifDirection
= (netdev_features_is_full_duplex(current
)
332 counters
->ifSpeed
= 100000000;
333 counters
->ifDirection
= 0;
335 if (!netdev_get_flags(dsp
->ofport
->netdev
, &flags
) && flags
& NETDEV_UP
) {
336 counters
->ifStatus
= 1; /* ifAdminStatus up. */
337 if (netdev_get_carrier(dsp
->ofport
->netdev
)) {
338 counters
->ifStatus
|= 2; /* ifOperStatus us. */
341 counters
->ifStatus
= 0; /* Down. */
345 1. Is the multicast counter filled in?
346 2. Does the multicast counter include broadcasts?
347 3. Does the rx_packets counter include multicasts/broadcasts?
349 ofproto_port_get_stats(dsp
->ofport
, &stats
);
350 counters
->ifInOctets
= stats
.rx_bytes
;
351 counters
->ifInUcastPkts
= stats
.rx_packets
;
352 counters
->ifInMulticastPkts
= stats
.multicast
;
353 counters
->ifInBroadcastPkts
= -1;
354 counters
->ifInDiscards
= stats
.rx_dropped
;
355 counters
->ifInErrors
= stats
.rx_errors
;
356 counters
->ifInUnknownProtos
= -1;
357 counters
->ifOutOctets
= stats
.tx_bytes
;
358 counters
->ifOutUcastPkts
= stats
.tx_packets
;
359 counters
->ifOutMulticastPkts
= -1;
360 counters
->ifOutBroadcastPkts
= -1;
361 counters
->ifOutDiscards
= stats
.tx_dropped
;
362 counters
->ifOutErrors
= stats
.tx_errors
;
363 counters
->ifPromiscuousMode
= 0;
365 SFLADD_ELEMENT(cs
, &elem
);
367 /* Include LACP counters and identifiers if this port is part of a LAG. */
368 if (ofproto_port_get_lacp_stats(dsp
->ofport
, &lacp_stats
) == 0) {
369 memset(&lacp_elem
, 0, sizeof lacp_elem
);
370 lacp_elem
.tag
= SFLCOUNTERS_LACP
;
371 lacp_elem
.counterBlock
.lacp
.actorSystemID
=
372 lacp_stats
.dot3adAggPortActorSystemID
;
373 lacp_elem
.counterBlock
.lacp
.partnerSystemID
=
374 lacp_stats
.dot3adAggPortPartnerOperSystemID
;
375 lacp_elem
.counterBlock
.lacp
.attachedAggID
=
376 lacp_stats
.dot3adAggPortAttachedAggID
;
377 lacp_elem
.counterBlock
.lacp
.portState
.v
.actorAdmin
=
378 lacp_stats
.dot3adAggPortActorAdminState
;
379 lacp_elem
.counterBlock
.lacp
.portState
.v
.actorOper
=
380 lacp_stats
.dot3adAggPortActorOperState
;
381 lacp_elem
.counterBlock
.lacp
.portState
.v
.partnerAdmin
=
382 lacp_stats
.dot3adAggPortPartnerAdminState
;
383 lacp_elem
.counterBlock
.lacp
.portState
.v
.partnerOper
=
384 lacp_stats
.dot3adAggPortPartnerOperState
;
385 lacp_elem
.counterBlock
.lacp
.LACPDUsRx
=
386 lacp_stats
.dot3adAggPortStatsLACPDUsRx
;
387 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerPDUsRx
);
388 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerResponsePDUsRx
);
389 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.unknownRx
);
390 lacp_elem
.counterBlock
.lacp
.illegalRx
=
391 lacp_stats
.dot3adAggPortStatsIllegalRx
;
392 lacp_elem
.counterBlock
.lacp
.LACPDUsTx
=
393 lacp_stats
.dot3adAggPortStatsLACPDUsTx
;
394 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerPDUsTx
);
395 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerResponsePDUsTx
);
396 SFLADD_ELEMENT(cs
, &lacp_elem
);
399 /* Include Port name. */
400 if ((ifName
= netdev_get_name(dsp
->ofport
->netdev
)) != NULL
) {
401 memset(&name_elem
, 0, sizeof name_elem
);
402 name_elem
.tag
= SFLCOUNTERS_PORTNAME
;
403 name_elem
.counterBlock
.portName
.portName
.str
= (char *)ifName
;
404 name_elem
.counterBlock
.portName
.portName
.len
= strlen(ifName
);
405 SFLADD_ELEMENT(cs
, &name_elem
);
408 /* Include OpenFlow DPID and openflow port number. */
409 memset(&of_elem
, 0, sizeof of_elem
);
410 of_elem
.tag
= SFLCOUNTERS_OPENFLOWPORT
;
411 of_elem
.counterBlock
.ofPort
.datapath_id
=
412 ofproto_get_datapath_id(dsp
->ofport
->ofproto
);
413 of_elem
.counterBlock
.ofPort
.port_no
=
414 (OVS_FORCE
uint32_t)dsp
->ofport
->ofp_port
;
415 SFLADD_ELEMENT(cs
, &of_elem
);
417 sfl_poller_writeCountersSample(poller
, cs
);
420 /* Obtains an address to use for the local sFlow agent and stores it into
421 * '*agent_addr'. Returns true if successful, false on failure.
423 * The sFlow agent address should be a local IP address that is persistent and
424 * reachable over the network, if possible. The IP address associated with
425 * 'agent_device' is used if it has one, and otherwise 'control_ip', the IP
426 * address used to talk to the controller. If the agent device is not
427 * specified then it is figured out by taking a look at the routing table based
430 sflow_choose_agent_address(const char *agent_device
,
431 const struct sset
*targets
,
432 const char *control_ip
,
433 SFLAddress
*agent_addr
)
438 memset(agent_addr
, 0, sizeof *agent_addr
);
439 agent_addr
->type
= SFLADDRESSTYPE_IP_V4
;
442 if (!netdev_get_in4_by_name(agent_device
, &in4
)) {
447 SSET_FOR_EACH (target
, targets
) {
449 struct sockaddr_storage ss
;
450 struct sockaddr_in sin
;
454 if (inet_parse_active(target
, SFL_DEFAULT_COLLECTOR_PORT
, &sa
.ss
)
455 && sa
.ss
.ss_family
== AF_INET
) {
458 if (ovs_router_lookup4(sa
.sin
.sin_addr
.s_addr
, name
, &gw
)
459 && !netdev_get_in4_by_name(name
, &in4
)) {
465 if (control_ip
&& !lookup_ip(control_ip
, &in4
)) {
469 VLOG_ERR("could not determine IP address for sFlow agent");
473 agent_addr
->address
.ip_v4
.addr
= (OVS_FORCE
uint32_t) in4
.s_addr
;
478 dpif_sflow_clear__(struct dpif_sflow
*ds
) OVS_REQUIRES(mutex
)
480 if (ds
->sflow_agent
) {
481 sflow_global_counters_subid_clear(ds
->sflow_agent
->subId
);
482 sfl_agent_release(ds
->sflow_agent
);
483 free(ds
->sflow_agent
);
484 ds
->sflow_agent
= NULL
;
486 collectors_destroy(ds
->collectors
);
487 ds
->collectors
= NULL
;
488 ofproto_sflow_options_destroy(ds
->options
);
491 /* Turn off sampling to save CPU cycles. */
496 dpif_sflow_clear(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
498 ovs_mutex_lock(&mutex
);
499 dpif_sflow_clear__(ds
);
500 ovs_mutex_unlock(&mutex
);
504 dpif_sflow_is_enabled(const struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
508 ovs_mutex_lock(&mutex
);
509 enabled
= ds
->collectors
!= NULL
;
510 ovs_mutex_unlock(&mutex
);
515 dpif_sflow_create(void)
517 static struct ovsthread_once once
= OVSTHREAD_ONCE_INITIALIZER
;
518 struct dpif_sflow
*ds
;
520 if (ovsthread_once_start(&once
)) {
521 ovs_mutex_init_recursive(&mutex
);
522 ovsthread_once_done(&once
);
525 ds
= xcalloc(1, sizeof *ds
);
526 ds
->next_tick
= time_now() + 1;
527 hmap_init(&ds
->ports
);
529 ovs_refcount_init(&ds
->ref_cnt
);
535 dpif_sflow_ref(const struct dpif_sflow
*ds_
)
537 struct dpif_sflow
*ds
= CONST_CAST(struct dpif_sflow
*, ds_
);
539 ovs_refcount_ref(&ds
->ref_cnt
);
544 /* 32-bit fraction of packets to sample with. A value of 0 samples no packets,
545 * a value of %UINT32_MAX samples all packets and intermediate values sample
546 * intermediate fractions of packets. */
548 dpif_sflow_get_probability(const struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
550 uint32_t probability
;
551 ovs_mutex_lock(&mutex
);
552 probability
= ds
->probability
;
553 ovs_mutex_unlock(&mutex
);
558 dpif_sflow_unref(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
560 if (ds
&& ovs_refcount_unref_relaxed(&ds
->ref_cnt
) == 1) {
561 struct dpif_sflow_port
*dsp
, *next
;
563 dpif_sflow_clear(ds
);
564 HMAP_FOR_EACH_SAFE (dsp
, next
, hmap_node
, &ds
->ports
) {
565 dpif_sflow_del_port__(ds
, dsp
);
567 hmap_destroy(&ds
->ports
);
573 dpif_sflow_add_poller(struct dpif_sflow
*ds
, struct dpif_sflow_port
*dsp
)
576 SFLPoller
*poller
= sfl_agent_addPoller(ds
->sflow_agent
, &dsp
->dsi
, ds
,
577 sflow_agent_get_counters
);
578 sfl_poller_set_sFlowCpInterval(poller
, ds
->options
->polling_interval
);
579 sfl_poller_set_sFlowCpReceiver(poller
, RECEIVER_INDEX
);
580 sfl_poller_set_bridgePort(poller
, odp_to_u32(dsp
->odp_port
));
583 static enum dpif_sflow_tunnel_type
584 dpif_sflow_tunnel_type(struct ofport
*ofport
) {
585 const char *type
= netdev_get_type(ofport
->netdev
);
587 if (strcmp(type
, "gre") == 0) {
588 return DPIF_SFLOW_TUNNEL_GRE
;
589 } else if (strcmp(type
, "ipsec_gre") == 0) {
590 return DPIF_SFLOW_TUNNEL_IPSEC_GRE
;
591 } else if (strcmp(type
, "vxlan") == 0) {
592 return DPIF_SFLOW_TUNNEL_VXLAN
;
593 } else if (strcmp(type
, "lisp") == 0) {
594 return DPIF_SFLOW_TUNNEL_LISP
;
595 } else if (strcmp(type
, "geneve") == 0) {
596 return DPIF_SFLOW_TUNNEL_GENEVE
;
599 return DPIF_SFLOW_TUNNEL_UNKNOWN
;
603 dpif_sflow_tunnel_proto(enum dpif_sflow_tunnel_type tunnel_type
)
605 /* Default to 0 (IPPROTO_IP), meaning "unknown". */
607 switch(tunnel_type
) {
609 case DPIF_SFLOW_TUNNEL_GRE
:
610 ipproto
= IPPROTO_GRE
;
613 case DPIF_SFLOW_TUNNEL_IPSEC_GRE
:
614 ipproto
= IPPROTO_ESP
;
617 case DPIF_SFLOW_TUNNEL_VXLAN
:
618 case DPIF_SFLOW_TUNNEL_LISP
:
619 case DPIF_SFLOW_TUNNEL_GENEVE
:
620 ipproto
= IPPROTO_UDP
;
622 case DPIF_SFLOW_TUNNEL_UNKNOWN
:
629 dpif_sflow_add_port(struct dpif_sflow
*ds
, struct ofport
*ofport
,
630 odp_port_t odp_port
) OVS_EXCLUDED(mutex
)
632 struct dpif_sflow_port
*dsp
;
634 enum dpif_sflow_tunnel_type tunnel_type
;
636 ovs_mutex_lock(&mutex
);
637 dpif_sflow_del_port(ds
, odp_port
);
639 tunnel_type
= dpif_sflow_tunnel_type(ofport
);
640 ifindex
= netdev_get_ifindex(ofport
->netdev
);
643 && tunnel_type
== DPIF_SFLOW_TUNNEL_UNKNOWN
) {
644 /* Not an ifindex port, and not a tunnel port either
645 * so do not add a cross-reference to it here.
650 /* Add to table of ports. */
651 dsp
= xmalloc(sizeof *dsp
);
652 dsp
->ofport
= ofport
;
653 dsp
->odp_port
= odp_port
;
654 dsp
->tunnel_type
= tunnel_type
;
655 hmap_insert(&ds
->ports
, &dsp
->hmap_node
, hash_odp_port(odp_port
));
658 /* Add poller for ports that have ifindex. */
659 SFL_DS_SET(dsp
->dsi
, SFL_DSCLASS_IFINDEX
, ifindex
, 0);
660 if (ds
->sflow_agent
) {
661 dpif_sflow_add_poller(ds
, dsp
);
664 /* Record "ifindex unknown" for the others */
665 SFL_DS_SET(dsp
->dsi
, SFL_DSCLASS_IFINDEX
, 0, 0);
669 ovs_mutex_unlock(&mutex
);
673 dpif_sflow_del_port__(struct dpif_sflow
*ds
, struct dpif_sflow_port
*dsp
)
677 && SFL_DS_INDEX(dsp
->dsi
)) {
678 sfl_agent_removePoller(ds
->sflow_agent
, &dsp
->dsi
);
679 sfl_agent_removeSampler(ds
->sflow_agent
, &dsp
->dsi
);
681 hmap_remove(&ds
->ports
, &dsp
->hmap_node
);
686 dpif_sflow_del_port(struct dpif_sflow
*ds
, odp_port_t odp_port
)
689 struct dpif_sflow_port
*dsp
;
691 ovs_mutex_lock(&mutex
);
692 dsp
= dpif_sflow_find_port(ds
, odp_port
);
694 dpif_sflow_del_port__(ds
, dsp
);
696 ovs_mutex_unlock(&mutex
);
700 dpif_sflow_set_options(struct dpif_sflow
*ds
,
701 const struct ofproto_sflow_options
*options
)
704 struct dpif_sflow_port
*dsp
;
705 bool options_changed
;
706 SFLReceiver
*receiver
;
709 SFLDataSource_instance dsi
;
714 ovs_mutex_lock(&mutex
);
715 if (sset_is_empty(&options
->targets
) || !options
->sampling_rate
) {
716 /* No point in doing any work if there are no targets or nothing to
718 dpif_sflow_clear__(ds
);
722 options_changed
= (!ds
->options
723 || !ofproto_sflow_options_equal(options
, ds
->options
));
725 /* Configure collectors if options have changed or if we're shortchanged in
726 * collectors (which indicates that opening one or more of the configured
727 * collectors failed, so that we should retry). */
729 || collectors_count(ds
->collectors
) < sset_count(&options
->targets
)) {
730 collectors_destroy(ds
->collectors
);
731 collectors_create(&options
->targets
, SFL_DEFAULT_COLLECTOR_PORT
,
733 if (ds
->collectors
== NULL
) {
734 VLOG_WARN_RL(&rl
, "no collectors could be initialized, "
736 dpif_sflow_clear__(ds
);
741 /* Choose agent IP address and agent device (if not yet setup) */
742 if (!sflow_choose_agent_address(options
->agent_device
,
744 options
->control_ip
, &agentIP
)) {
745 dpif_sflow_clear__(ds
);
749 /* Avoid reconfiguring if options didn't change. */
750 if (!options_changed
) {
753 ofproto_sflow_options_destroy(ds
->options
);
754 ds
->options
= ofproto_sflow_options_clone(options
);
757 VLOG_INFO("creating sFlow agent %d", options
->sub_id
);
758 if (ds
->sflow_agent
) {
759 sflow_global_counters_subid_clear(ds
->sflow_agent
->subId
);
760 sfl_agent_release(ds
->sflow_agent
);
762 ds
->sflow_agent
= xcalloc(1, sizeof *ds
->sflow_agent
);
764 sfl_agent_init(ds
->sflow_agent
,
767 now
, /* Boot time. */
768 now
, /* Current time. */
769 ds
, /* Pointer supplied to callbacks. */
770 sflow_agent_alloc_cb
,
772 sflow_agent_error_cb
,
773 sflow_agent_send_packet_cb
);
775 receiver
= sfl_agent_addReceiver(ds
->sflow_agent
);
776 sfl_receiver_set_sFlowRcvrOwner(receiver
, "Open vSwitch sFlow");
777 sfl_receiver_set_sFlowRcvrTimeout(receiver
, 0xffffffff);
779 /* Set the sampling_rate down in the datapath. */
780 ds
->probability
= MAX(1, UINT32_MAX
/ ds
->options
->sampling_rate
);
782 /* Add a single sampler for the bridge. This appears as a PHYSICAL_ENTITY
783 because it is associated with the hypervisor, and interacts with the server
784 hardware directly. The sub_id is used to distinguish this sampler from
785 others on other bridges within the same agent. */
786 dsIndex
= 1000 + options
->sub_id
;
787 SFL_DS_SET(dsi
, SFL_DSCLASS_PHYSICAL_ENTITY
, dsIndex
, 0);
788 sampler
= sfl_agent_addSampler(ds
->sflow_agent
, &dsi
);
789 sfl_sampler_set_sFlowFsPacketSamplingRate(sampler
, ds
->options
->sampling_rate
);
790 sfl_sampler_set_sFlowFsMaximumHeaderSize(sampler
, ds
->options
->header_len
);
791 sfl_sampler_set_sFlowFsReceiver(sampler
, RECEIVER_INDEX
);
793 /* Add a counter poller for the bridge so we can use it to send
794 global counters such as datapath cache hit/miss stats. */
795 poller
= sfl_agent_addPoller(ds
->sflow_agent
, &dsi
, ds
,
796 sflow_agent_get_global_counters
);
797 sfl_poller_set_sFlowCpInterval(poller
, ds
->options
->polling_interval
);
798 sfl_poller_set_sFlowCpReceiver(poller
, RECEIVER_INDEX
);
800 /* Add pollers for the currently known ifindex-ports */
801 HMAP_FOR_EACH (dsp
, hmap_node
, &ds
->ports
) {
802 if (SFL_DS_INDEX(dsp
->dsi
)) {
803 dpif_sflow_add_poller(ds
, dsp
);
809 ovs_mutex_unlock(&mutex
);
813 dpif_sflow_odp_port_to_ifindex(const struct dpif_sflow
*ds
,
814 odp_port_t odp_port
) OVS_EXCLUDED(mutex
)
816 struct dpif_sflow_port
*dsp
;
819 ovs_mutex_lock(&mutex
);
820 dsp
= dpif_sflow_find_port(ds
, odp_port
);
821 ret
= dsp
? SFL_DS_INDEX(dsp
->dsi
) : 0;
822 ovs_mutex_unlock(&mutex
);
827 dpif_sflow_tunnel_v4(uint8_t tunnel_ipproto
,
828 const struct flow_tnl
*tunnel
,
829 SFLSampled_ipv4
*ipv4
)
832 ipv4
->protocol
= tunnel_ipproto
;
833 ipv4
->tos
= tunnel
->ip_tos
;
834 ipv4
->src_ip
.addr
= (OVS_FORCE
uint32_t) tunnel
->ip_src
;
835 ipv4
->dst_ip
.addr
= (OVS_FORCE
uint32_t) tunnel
->ip_dst
;
836 ipv4
->src_port
= (OVS_FORCE
uint16_t) tunnel
->tp_src
;
837 ipv4
->dst_port
= (OVS_FORCE
uint16_t) tunnel
->tp_dst
;
841 dpif_sflow_push_mpls_lse(struct dpif_sflow_actions
*sflow_actions
,
844 if (sflow_actions
->mpls_stack_depth
>= FLOW_MAX_MPLS_LABELS
) {
845 sflow_actions
->mpls_err
= true;
849 /* Record the new lse in host-byte-order. */
850 /* BOS flag will be fixed later when we send stack to sFlow library. */
851 sflow_actions
->mpls_lse
[sflow_actions
->mpls_stack_depth
++] = ntohl(lse
);
855 dpif_sflow_pop_mpls_lse(struct dpif_sflow_actions
*sflow_actions
)
857 if (sflow_actions
->mpls_stack_depth
== 0) {
858 sflow_actions
->mpls_err
= true;
861 sflow_actions
->mpls_stack_depth
--;
865 dpif_sflow_set_mpls(struct dpif_sflow_actions
*sflow_actions
,
866 const struct ovs_key_mpls
*mpls_key
, int n
)
869 if (n
> FLOW_MAX_MPLS_LABELS
) {
870 sflow_actions
->mpls_err
= true;
874 for (ii
= 0; ii
< n
; ii
++) {
875 /* Reverse stack order, and use host-byte-order for each lse. */
876 sflow_actions
->mpls_lse
[n
- ii
- 1] = ntohl(mpls_key
[ii
].mpls_lse
);
878 sflow_actions
->mpls_stack_depth
= n
;
882 sflow_read_tnl_push_action(const struct nlattr
*attr
,
883 struct dpif_sflow_actions
*sflow_actions
)
885 /* Modeled on lib/odp-util.c: format_odp_tnl_push_header */
886 const struct ovs_action_push_tnl
*data
= nl_attr_get(attr
);
887 const struct eth_header
*eth
= (const struct eth_header
*) data
->header
;
888 const struct ip_header
*ip
889 = ALIGNED_CAST(const struct ip_header
*, eth
+ 1);
891 sflow_actions
->out_port
= u32_to_odp(data
->out_port
);
894 /* TODO: SFlow does not currently define a MAC-in-MAC
895 * encapsulation structure. We could use an extension
896 * structure to report this.
900 /* Cannot assume alignment so just use memcpy. */
901 sflow_actions
->tunnel
.ip_src
= get_16aligned_be32(&ip
->ip_src
);
902 sflow_actions
->tunnel
.ip_dst
= get_16aligned_be32(&ip
->ip_dst
);
903 sflow_actions
->tunnel
.ip_tos
= ip
->ip_tos
;
904 sflow_actions
->tunnel
.ip_ttl
= ip
->ip_ttl
;
905 /* The tnl_push action can supply the ip_protocol too. */
906 sflow_actions
->tunnel_ipproto
= ip
->ip_proto
;
909 if (data
->tnl_type
== OVS_VPORT_TYPE_VXLAN
910 || data
->tnl_type
== OVS_VPORT_TYPE_GENEVE
) {
911 const struct udp_header
*udp
= (const struct udp_header
*) (ip
+ 1);
912 sflow_actions
->tunnel
.tp_src
= udp
->udp_src
;
913 sflow_actions
->tunnel
.tp_dst
= udp
->udp_dst
;
915 if (data
->tnl_type
== OVS_VPORT_TYPE_VXLAN
) {
916 const struct vxlanhdr
*vxh
= (const struct vxlanhdr
*) (udp
+ 1);
917 uint64_t tun_id
= ntohl(get_16aligned_be32(&vxh
->vx_vni
)) >> 8;
918 sflow_actions
->tunnel
.tun_id
= htonll(tun_id
);
920 const struct genevehdr
*gnh
= (const struct genevehdr
*) (udp
+ 1);
921 uint64_t tun_id
= ntohl(get_16aligned_be32(&gnh
->vni
)) >> 8;
922 sflow_actions
->tunnel
.tun_id
= htonll(tun_id
);
924 } else if (data
->tnl_type
== OVS_VPORT_TYPE_GRE
) {
925 const void *l4
= ip
+ 1;
926 const struct gre_base_hdr
*greh
= (const struct gre_base_hdr
*) l4
;
927 ovs_16aligned_be32
*options
= (ovs_16aligned_be32
*)(greh
+ 1);
928 if (greh
->flags
& htons(GRE_CSUM
)) {
931 if (greh
->flags
& htons(GRE_KEY
)) {
932 uint64_t tun_id
= ntohl(get_16aligned_be32(options
));
933 sflow_actions
->tunnel
.tun_id
= htonll(tun_id
);
939 sflow_read_set_action(const struct nlattr
*attr
,
940 struct dpif_sflow_actions
*sflow_actions
)
942 enum ovs_key_attr type
= nl_attr_type(attr
);
944 case OVS_KEY_ATTR_ENCAP
:
945 if (++sflow_actions
->encap_depth
> 1) {
946 /* Do not handle multi-encap for now. */
947 sflow_actions
->tunnel_err
= true;
949 dpif_sflow_read_actions(NULL
,
950 nl_attr_get(attr
), nl_attr_get_size(attr
),
954 case OVS_KEY_ATTR_PRIORITY
:
955 case OVS_KEY_ATTR_SKB_MARK
:
956 case OVS_KEY_ATTR_DP_HASH
:
957 case OVS_KEY_ATTR_RECIRC_ID
:
960 case OVS_KEY_ATTR_TUNNEL
: {
961 if (++sflow_actions
->encap_depth
> 1) {
962 /* Do not handle multi-encap for now. */
963 sflow_actions
->tunnel_err
= true;
965 if (odp_tun_key_from_attr(attr
, false, &sflow_actions
->tunnel
)
967 /* Tunnel parsing error. */
968 sflow_actions
->tunnel_err
= true;
974 case OVS_KEY_ATTR_IN_PORT
:
975 case OVS_KEY_ATTR_ETHERNET
:
976 case OVS_KEY_ATTR_VLAN
:
979 case OVS_KEY_ATTR_MPLS
: {
980 const struct ovs_key_mpls
*mpls_key
= nl_attr_get(attr
);
981 size_t size
= nl_attr_get_size(attr
);
982 dpif_sflow_set_mpls(sflow_actions
, mpls_key
, size
/ sizeof *mpls_key
);
986 case OVS_KEY_ATTR_ETHERTYPE
:
987 case OVS_KEY_ATTR_IPV4
:
988 if (sflow_actions
->encap_depth
== 1) {
989 const struct ovs_key_ipv4
*key
= nl_attr_get(attr
);
991 sflow_actions
->tunnel
.ip_src
= key
->ipv4_src
;
994 sflow_actions
->tunnel
.ip_dst
= key
->ipv4_dst
;
996 if (key
->ipv4_proto
) {
997 sflow_actions
->tunnel_ipproto
= key
->ipv4_proto
;
1000 sflow_actions
->tunnel
.ip_tos
= key
->ipv4_tos
;
1002 if (key
->ipv4_ttl
) {
1003 sflow_actions
->tunnel
.ip_tos
= key
->ipv4_ttl
;
1008 case OVS_KEY_ATTR_IPV6
:
1009 /* TODO: parse IPv6 encap. */
1012 /* These have the same structure and format. */
1013 case OVS_KEY_ATTR_TCP
:
1014 case OVS_KEY_ATTR_UDP
:
1015 case OVS_KEY_ATTR_SCTP
:
1016 if (sflow_actions
->encap_depth
== 1) {
1017 const struct ovs_key_tcp
*key
= nl_attr_get(attr
);
1019 sflow_actions
->tunnel
.tp_src
= key
->tcp_src
;
1022 sflow_actions
->tunnel
.tp_dst
= key
->tcp_dst
;
1027 case OVS_KEY_ATTR_TCP_FLAGS
:
1028 case OVS_KEY_ATTR_ICMP
:
1029 case OVS_KEY_ATTR_ICMPV6
:
1030 case OVS_KEY_ATTR_ARP
:
1031 case OVS_KEY_ATTR_ND
:
1032 case OVS_KEY_ATTR_CT_STATE
:
1033 case OVS_KEY_ATTR_CT_ZONE
:
1034 case OVS_KEY_ATTR_CT_MARK
:
1035 case OVS_KEY_ATTR_CT_LABELS
:
1036 case OVS_KEY_ATTR_UNSPEC
:
1037 case __OVS_KEY_ATTR_MAX
:
1044 dpif_sflow_capture_input_mpls(const struct flow
*flow
,
1045 struct dpif_sflow_actions
*sflow_actions
)
1047 if (eth_type_mpls(flow
->dl_type
)) {
1051 /* Calculate depth by detecting BOS. */
1052 for (ii
= 0; ii
< FLOW_MAX_MPLS_LABELS
; ii
++) {
1053 lse
= flow
->mpls_lse
[ii
];
1055 if (lse
& htonl(MPLS_BOS_MASK
)) {
1059 /* Capture stack, reversing stack order, and
1060 * using host-byte-order for each lse. BOS flag
1061 * is ignored for now. It is set later when
1062 * the output stack is encoded.
1064 for (ii
= 0; ii
< depth
; ii
++) {
1065 lse
= flow
->mpls_lse
[ii
];
1066 sflow_actions
->mpls_lse
[depth
- ii
- 1] = ntohl(lse
);
1068 sflow_actions
->mpls_stack_depth
= depth
;
1073 dpif_sflow_read_actions(const struct flow
*flow
,
1074 const struct nlattr
*actions
, size_t actions_len
,
1075 struct dpif_sflow_actions
*sflow_actions
)
1077 const struct nlattr
*a
;
1080 if (actions_len
== 0) {
1081 /* Packet dropped.*/
1086 /* Make sure the MPLS output stack
1087 * is seeded with the input stack.
1089 dpif_sflow_capture_input_mpls(flow
, sflow_actions
);
1091 /* XXX when 802.1AD(QinQ) is supported then
1092 * we can do the same with VLAN stacks here
1096 NL_ATTR_FOR_EACH (a
, left
, actions
, actions_len
) {
1097 enum ovs_action_attr type
= nl_attr_type(a
);
1099 case OVS_ACTION_ATTR_OUTPUT
:
1100 /* Capture the output port in case we need it
1101 * to get the output tunnel type.
1103 sflow_actions
->out_port
= u32_to_odp(nl_attr_get_u32(a
));
1106 case OVS_ACTION_ATTR_TUNNEL_POP
:
1107 /* XXX: Do not handle this for now. It's not clear
1108 * if we should start with encap_depth == 1 when we
1109 * see an input tunnel, or if we should assume
1110 * that the input tunnel was always "popped" if it
1111 * was presented to us decoded in flow->tunnel?
1113 * If we do handle this it might look like this,
1114 * as we clear the captured tunnel info and decrement
1117 * memset(&sflow_actions->tunnel, 0, sizeof struct flow_tnl);
1118 * sflow_actions->tunnel_ipproto = 0;
1119 * --sflow_actions->encap_depth;
1121 * but for now just disable the tunnel annotation:
1123 sflow_actions
->tunnel_err
= true;
1126 case OVS_ACTION_ATTR_TUNNEL_PUSH
:
1127 /* XXX: This actions appears to come with it's own
1128 * OUTPUT action, so should it be regarded as having
1129 * an implicit "pop" following it too? Put another
1130 * way, would two tnl_push() actions in succession
1131 * result in a packet with two layers of encap?
1133 if (++sflow_actions
->encap_depth
> 1) {
1134 /* Do not handle multi-encap for now. */
1135 sflow_actions
->tunnel_err
= true;
1137 sflow_read_tnl_push_action(a
, sflow_actions
);
1141 case OVS_ACTION_ATTR_USERSPACE
:
1142 case OVS_ACTION_ATTR_RECIRC
:
1143 case OVS_ACTION_ATTR_HASH
:
1144 case OVS_ACTION_ATTR_CT
:
1147 case OVS_ACTION_ATTR_SET_MASKED
:
1148 /* TODO: apply mask. XXX: Are we likely to see this? */
1151 case OVS_ACTION_ATTR_SET
:
1152 sflow_read_set_action(nl_attr_get(a
), sflow_actions
);
1155 case OVS_ACTION_ATTR_PUSH_VLAN
:
1156 case OVS_ACTION_ATTR_POP_VLAN
:
1157 /* TODO: 802.1AD(QinQ) is not supported by OVS (yet), so do not
1158 * construct a VLAN-stack. The sFlow user-action cookie already
1159 * captures the egress VLAN ID so there is nothing more to do here.
1163 case OVS_ACTION_ATTR_PUSH_MPLS
: {
1164 const struct ovs_action_push_mpls
*mpls
= nl_attr_get(a
);
1166 dpif_sflow_push_mpls_lse(sflow_actions
, mpls
->mpls_lse
);
1170 case OVS_ACTION_ATTR_POP_MPLS
: {
1171 dpif_sflow_pop_mpls_lse(sflow_actions
);
1174 case OVS_ACTION_ATTR_SAMPLE
:
1175 case OVS_ACTION_ATTR_UNSPEC
:
1176 case __OVS_ACTION_ATTR_MAX
:
1184 dpif_sflow_encode_mpls_stack(SFLLabelStack
*stack
,
1185 uint32_t *mpls_lse_buf
,
1186 const struct dpif_sflow_actions
*sflow_actions
)
1188 /* Put the MPLS stack back into "packet header" order,
1189 * and make sure the BOS flag is set correctly on the last
1190 * one. Each lse is still in host-byte-order.
1194 stack
->depth
= sflow_actions
->mpls_stack_depth
;
1195 stack
->stack
= mpls_lse_buf
;
1196 for (ii
= 0; ii
< stack
->depth
; ii
++) {
1197 lse
= sflow_actions
->mpls_lse
[stack
->depth
- ii
- 1];
1198 stack
->stack
[ii
] = (lse
& ~MPLS_BOS_MASK
);
1200 stack
->stack
[stack
->depth
- 1] |= MPLS_BOS_MASK
;
1203 /* Extract the output port count from the user action cookie.
1204 * See http://sflow.org/sflow_version_5.txt "Input/Output port information"
1207 dpif_sflow_cookie_num_outputs(const union user_action_cookie
*cookie
)
1209 uint32_t format
= cookie
->sflow
.output
& 0xC0000000;
1210 uint32_t port_n
= cookie
->sflow
.output
& 0x3FFFFFFF;
1212 return port_n
? 1 : 0;
1214 else if (format
== 0x80000000) {
1221 dpif_sflow_received(struct dpif_sflow
*ds
, const struct dp_packet
*packet
,
1222 const struct flow
*flow
, odp_port_t odp_in_port
,
1223 const union user_action_cookie
*cookie
,
1224 const struct dpif_sflow_actions
*sflow_actions
)
1227 SFL_FLOW_SAMPLE_TYPE fs
;
1228 SFLFlow_sample_element hdrElem
;
1229 SFLSampled_header
*header
;
1230 SFLFlow_sample_element switchElem
;
1231 uint8_t tnlInProto
, tnlOutProto
;
1232 SFLFlow_sample_element tnlInElem
, tnlOutElem
;
1233 SFLFlow_sample_element vniInElem
, vniOutElem
;
1234 SFLFlow_sample_element mplsElem
;
1235 uint32_t mpls_lse_buf
[FLOW_MAX_MPLS_LABELS
];
1236 SFLSampler
*sampler
;
1237 struct dpif_sflow_port
*in_dsp
;
1238 struct dpif_sflow_port
*out_dsp
;
1241 ovs_mutex_lock(&mutex
);
1242 sampler
= ds
->sflow_agent
->samplers
;
1247 /* Build a flow sample. */
1248 memset(&fs
, 0, sizeof fs
);
1250 /* Look up the input ifIndex if this port has one. Otherwise just
1251 * leave it as 0 (meaning 'unknown') and continue. */
1252 in_dsp
= dpif_sflow_find_port(ds
, odp_in_port
);
1254 fs
.input
= SFL_DS_INDEX(in_dsp
->dsi
);
1257 /* Make the assumption that the random number generator in the datapath converges
1258 * to the configured mean, and just increment the samplePool by the configured
1259 * sampling rate every time. */
1260 sampler
->samplePool
+= sfl_sampler_get_sFlowFsPacketSamplingRate(sampler
);
1262 /* Sampled header. */
1263 memset(&hdrElem
, 0, sizeof hdrElem
);
1264 hdrElem
.tag
= SFLFLOW_HEADER
;
1265 header
= &hdrElem
.flowType
.header
;
1266 header
->header_protocol
= SFLHEADER_ETHERNET_ISO8023
;
1267 /* The frame_length should include the Ethernet FCS (4 bytes),
1268 * but it has already been stripped, so we need to add 4 here. */
1269 header
->frame_length
= dp_packet_size(packet
) + 4;
1270 /* Ethernet FCS stripped off. */
1271 header
->stripped
= 4;
1272 header
->header_length
= MIN(dp_packet_size(packet
),
1273 sampler
->sFlowFsMaximumHeaderSize
);
1274 header
->header_bytes
= dp_packet_data(packet
);
1276 /* Add extended switch element. */
1277 memset(&switchElem
, 0, sizeof(switchElem
));
1278 switchElem
.tag
= SFLFLOW_EX_SWITCH
;
1279 switchElem
.flowType
.sw
.src_vlan
= vlan_tci_to_vid(flow
->vlan_tci
);
1280 switchElem
.flowType
.sw
.src_priority
= vlan_tci_to_pcp(flow
->vlan_tci
);
1282 /* Retrieve data from user_action_cookie. */
1283 vlan_tci
= cookie
->sflow
.vlan_tci
;
1284 switchElem
.flowType
.sw
.dst_vlan
= vlan_tci_to_vid(vlan_tci
);
1285 switchElem
.flowType
.sw
.dst_priority
= vlan_tci_to_pcp(vlan_tci
);
1287 fs
.output
= cookie
->sflow
.output
;
1290 if (flow
->tunnel
.ip_dst
) {
1291 memset(&tnlInElem
, 0, sizeof(tnlInElem
));
1292 tnlInElem
.tag
= SFLFLOW_EX_IPV4_TUNNEL_INGRESS
;
1293 tnlInProto
= dpif_sflow_tunnel_proto(in_dsp
->tunnel_type
);
1294 dpif_sflow_tunnel_v4(tnlInProto
,
1296 &tnlInElem
.flowType
.ipv4
);
1297 SFLADD_ELEMENT(&fs
, &tnlInElem
);
1298 if (flow
->tunnel
.tun_id
) {
1299 memset(&vniInElem
, 0, sizeof(vniInElem
));
1300 vniInElem
.tag
= SFLFLOW_EX_VNI_INGRESS
;
1301 vniInElem
.flowType
.tunnel_vni
.vni
1302 = ntohll(flow
->tunnel
.tun_id
);
1303 SFLADD_ELEMENT(&fs
, &vniInElem
);
1307 /* Output tunnel. */
1309 && sflow_actions
->encap_depth
== 1
1310 && !sflow_actions
->tunnel_err
1311 && dpif_sflow_cookie_num_outputs(cookie
) == 1) {
1312 tnlOutProto
= sflow_actions
->tunnel_ipproto
;
1313 if (tnlOutProto
== 0) {
1314 /* Try to infer the ip-protocol from the output port. */
1315 if (sflow_actions
->out_port
!= ODPP_NONE
) {
1316 out_dsp
= dpif_sflow_find_port(ds
, sflow_actions
->out_port
);
1318 tnlOutProto
= dpif_sflow_tunnel_proto(out_dsp
->tunnel_type
);
1322 memset(&tnlOutElem
, 0, sizeof(tnlOutElem
));
1323 tnlOutElem
.tag
= SFLFLOW_EX_IPV4_TUNNEL_EGRESS
;
1324 dpif_sflow_tunnel_v4(tnlOutProto
,
1325 &sflow_actions
->tunnel
,
1326 &tnlOutElem
.flowType
.ipv4
);
1327 SFLADD_ELEMENT(&fs
, &tnlOutElem
);
1328 if (sflow_actions
->tunnel
.tun_id
) {
1329 memset(&vniOutElem
, 0, sizeof(vniOutElem
));
1330 vniOutElem
.tag
= SFLFLOW_EX_VNI_EGRESS
;
1331 vniOutElem
.flowType
.tunnel_vni
.vni
1332 = ntohll(sflow_actions
->tunnel
.tun_id
);
1333 SFLADD_ELEMENT(&fs
, &vniOutElem
);
1337 /* MPLS output label stack. */
1339 && sflow_actions
->mpls_stack_depth
> 0
1340 && !sflow_actions
->mpls_err
1341 && dpif_sflow_cookie_num_outputs(cookie
) == 1) {
1342 memset(&mplsElem
, 0, sizeof(mplsElem
));
1343 mplsElem
.tag
= SFLFLOW_EX_MPLS
;
1344 dpif_sflow_encode_mpls_stack(&mplsElem
.flowType
.mpls
.out_stack
,
1347 SFLADD_ELEMENT(&fs
, &mplsElem
);
1350 /* Submit the flow sample to be encoded into the next datagram. */
1351 SFLADD_ELEMENT(&fs
, &hdrElem
);
1352 SFLADD_ELEMENT(&fs
, &switchElem
);
1353 sfl_sampler_writeFlowSample(sampler
, &fs
);
1356 ovs_mutex_unlock(&mutex
);
1360 dpif_sflow_run(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
1362 ovs_mutex_lock(&mutex
);
1363 if (ds
->collectors
!= NULL
) {
1364 time_t now
= time_now();
1366 if (now
>= ds
->next_tick
) {
1367 sfl_agent_tick(ds
->sflow_agent
, time_wall());
1368 ds
->next_tick
= now
+ 1;
1371 ovs_mutex_unlock(&mutex
);
1375 dpif_sflow_wait(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
1377 ovs_mutex_lock(&mutex
);
1378 if (ds
->collectors
!= NULL
) {
1379 poll_timer_wait_until(ds
->next_tick
* 1000LL);
1381 ovs_mutex_unlock(&mutex
);