2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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"
29 #include "openvswitch/hmap.h"
32 #include "openvswitch/ofpbuf.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 ofproto_sflow_options_equal(const struct ofproto_sflow_options
*a
,
96 const struct ofproto_sflow_options
*b
)
98 return (sset_equals(&a
->targets
, &b
->targets
)
99 && a
->sampling_rate
== b
->sampling_rate
100 && a
->polling_interval
== b
->polling_interval
101 && a
->header_len
== b
->header_len
102 && a
->sub_id
== b
->sub_id
103 && nullable_string_is_equal(a
->agent_device
, b
->agent_device
)
104 && nullable_string_is_equal(a
->control_ip
, b
->control_ip
));
107 static struct ofproto_sflow_options
*
108 ofproto_sflow_options_clone(const struct ofproto_sflow_options
*old
)
110 struct ofproto_sflow_options
*new = xmemdup(old
, sizeof *old
);
111 sset_clone(&new->targets
, &old
->targets
);
112 new->agent_device
= nullable_xstrdup(old
->agent_device
);
113 new->control_ip
= nullable_xstrdup(old
->control_ip
);
118 ofproto_sflow_options_destroy(struct ofproto_sflow_options
*options
)
121 sset_destroy(&options
->targets
);
122 free(options
->agent_device
);
123 free(options
->control_ip
);
128 /* sFlow library callback to allocate memory. */
130 sflow_agent_alloc_cb(void *magic OVS_UNUSED
, SFLAgent
*agent OVS_UNUSED
,
133 return xzalloc(bytes
);
136 /* sFlow library callback to free memory. */
138 sflow_agent_free_cb(void *magic OVS_UNUSED
, SFLAgent
*agent OVS_UNUSED
,
145 /* sFlow library callback to report error. */
147 sflow_agent_error_cb(void *magic OVS_UNUSED
, SFLAgent
*agent OVS_UNUSED
,
150 VLOG_WARN("sFlow agent error: %s", msg
);
153 /* sFlow library callback to send datagram. */
155 sflow_agent_send_packet_cb(void *ds_
, SFLAgent
*agent OVS_UNUSED
,
156 SFLReceiver
*receiver OVS_UNUSED
, u_char
*pkt
,
159 struct dpif_sflow
*ds
= ds_
;
160 collectors_send(ds
->collectors
, pkt
, pktLen
);
163 static struct dpif_sflow_port
*
164 dpif_sflow_find_port(const struct dpif_sflow
*ds
, odp_port_t odp_port
)
167 struct dpif_sflow_port
*dsp
;
169 HMAP_FOR_EACH_IN_BUCKET (dsp
, hmap_node
, hash_odp_port(odp_port
),
171 if (dsp
->odp_port
== odp_port
) {
178 /* Call to get the datapath stats. Modeled after the dpctl utility.
180 * It might be more efficient for this module to be given a handle it can use
181 * to get these stats more efficiently, but this is only going to be called
182 * once every 20-30 seconds. Return number of datapaths found (normally expect
185 sflow_get_dp_stats(struct dpif_sflow
*ds OVS_UNUSED
,
186 struct dpif_dp_stats
*dp_totals
)
192 memset(dp_totals
, 0, sizeof *dp_totals
);
194 dp_enumerate_types(&types
);
195 SSET_FOR_EACH (type
, &types
) {
199 if (dp_enumerate_names(type
, &names
) == 0) {
200 SSET_FOR_EACH (name
, &names
) {
202 if (dpif_open(name
, type
, &dpif
) == 0) {
203 struct dpif_dp_stats dp_stats
;
204 if (dpif_get_dp_stats(dpif
, &dp_stats
) == 0) {
206 dp_totals
->n_hit
+= dp_stats
.n_hit
;
207 dp_totals
->n_missed
+= dp_stats
.n_missed
;
208 dp_totals
->n_lost
+= dp_stats
.n_lost
;
209 dp_totals
->n_flows
+= dp_stats
.n_flows
;
210 dp_totals
->n_mask_hit
+= dp_stats
.n_mask_hit
;
211 dp_totals
->n_masks
+= dp_stats
.n_masks
;
216 sset_destroy(&names
);
219 sset_destroy(&types
);
223 /* If there are multiple bridges defined then we need some
224 minimal artibration to decide which one should send the
225 global counters. This function allows each sub-agent to
226 ask if he should do it or not. */
228 sflow_global_counters_subid_test(uint32_t subid
)
231 if (sflow_global_counters_subid
== SFLOW_GC_SUBID_UNCLAIMED
) {
232 /* The role is up for grabs. */
233 sflow_global_counters_subid
= subid
;
235 return (sflow_global_counters_subid
== subid
);
239 sflow_global_counters_subid_clear(uint32_t subid
)
242 if (sflow_global_counters_subid
== subid
) {
243 /* The sub-agent that was sending global counters
244 is going away, so reset to allow another
246 sflow_global_counters_subid
= SFLOW_GC_SUBID_UNCLAIMED
;
251 sflow_agent_get_global_counters(void *ds_
, SFLPoller
*poller
,
252 SFL_COUNTERS_SAMPLE_TYPE
*cs
)
255 struct dpif_sflow
*ds
= ds_
;
256 SFLCounters_sample_element dp_elem
, res_elem
;
257 struct dpif_dp_stats dp_totals
;
260 if (!sflow_global_counters_subid_test(poller
->agent
->subId
)) {
261 /* Another sub-agent is currently responsible for this. */
266 if (sflow_get_dp_stats(ds
, &dp_totals
)) {
267 dp_elem
.tag
= SFLCOUNTERS_OVSDP
;
268 dp_elem
.counterBlock
.ovsdp
.n_hit
= dp_totals
.n_hit
;
269 dp_elem
.counterBlock
.ovsdp
.n_missed
= dp_totals
.n_missed
;
270 dp_elem
.counterBlock
.ovsdp
.n_lost
= dp_totals
.n_lost
;
271 dp_elem
.counterBlock
.ovsdp
.n_mask_hit
= dp_totals
.n_mask_hit
;
272 dp_elem
.counterBlock
.ovsdp
.n_flows
= dp_totals
.n_flows
;
273 dp_elem
.counterBlock
.ovsdp
.n_masks
= dp_totals
.n_masks
;
274 SFLADD_ELEMENT(cs
, &dp_elem
);
278 getrusage(RUSAGE_SELF
, &usage
);
279 res_elem
.tag
= SFLCOUNTERS_APP_RESOURCES
;
280 res_elem
.counterBlock
.appResources
.user_time
281 = timeval_to_msec(&usage
.ru_utime
);
282 res_elem
.counterBlock
.appResources
.system_time
283 = timeval_to_msec(&usage
.ru_stime
);
284 res_elem
.counterBlock
.appResources
.mem_used
= (usage
.ru_maxrss
* 1024);
285 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.mem_max
);
286 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.fd_open
);
287 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.fd_max
);
288 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.conn_open
);
289 SFL_UNDEF_GAUGE(res_elem
.counterBlock
.appResources
.conn_max
);
291 SFLADD_ELEMENT(cs
, &res_elem
);
292 sfl_poller_writeCountersSample(poller
, cs
);
296 sflow_agent_get_counters(void *ds_
, SFLPoller
*poller
,
297 SFL_COUNTERS_SAMPLE_TYPE
*cs
)
300 struct dpif_sflow
*ds
= ds_
;
301 SFLCounters_sample_element elem
, lacp_elem
, of_elem
, name_elem
;
302 enum netdev_features current
;
303 struct dpif_sflow_port
*dsp
;
304 SFLIf_counters
*counters
;
305 struct netdev_stats stats
;
306 enum netdev_flags flags
;
307 struct lacp_slave_stats lacp_stats
;
310 dsp
= dpif_sflow_find_port(ds
, u32_to_odp(poller
->bridgePort
));
315 elem
.tag
= SFLCOUNTERS_GENERIC
;
316 counters
= &elem
.counterBlock
.generic
;
317 counters
->ifIndex
= SFL_DS_INDEX(poller
->dsi
);
318 counters
->ifType
= 6;
319 if (!netdev_get_features(dsp
->ofport
->netdev
, ¤t
, NULL
, NULL
, NULL
)) {
320 /* The values of ifDirection come from MAU MIB (RFC 2668): 0 = unknown,
321 1 = full-duplex, 2 = half-duplex, 3 = in, 4=out */
322 counters
->ifSpeed
= netdev_features_to_bps(current
, 0);
323 counters
->ifDirection
= (netdev_features_is_full_duplex(current
)
326 counters
->ifSpeed
= 100000000;
327 counters
->ifDirection
= 0;
329 if (!netdev_get_flags(dsp
->ofport
->netdev
, &flags
) && flags
& NETDEV_UP
) {
330 counters
->ifStatus
= 1; /* ifAdminStatus up. */
331 if (netdev_get_carrier(dsp
->ofport
->netdev
)) {
332 counters
->ifStatus
|= 2; /* ifOperStatus us. */
335 counters
->ifStatus
= 0; /* Down. */
339 1. Is the multicast counter filled in?
340 2. Does the multicast counter include broadcasts?
341 3. Does the rx_packets counter include multicasts/broadcasts?
343 ofproto_port_get_stats(dsp
->ofport
, &stats
);
344 counters
->ifInOctets
= stats
.rx_bytes
;
345 counters
->ifInUcastPkts
= stats
.rx_packets
;
346 counters
->ifInMulticastPkts
= stats
.multicast
;
347 counters
->ifInBroadcastPkts
= -1;
348 counters
->ifInDiscards
= stats
.rx_dropped
;
349 counters
->ifInErrors
= stats
.rx_errors
;
350 counters
->ifInUnknownProtos
= -1;
351 counters
->ifOutOctets
= stats
.tx_bytes
;
352 counters
->ifOutUcastPkts
= stats
.tx_packets
;
353 counters
->ifOutMulticastPkts
= -1;
354 counters
->ifOutBroadcastPkts
= -1;
355 counters
->ifOutDiscards
= stats
.tx_dropped
;
356 counters
->ifOutErrors
= stats
.tx_errors
;
357 counters
->ifPromiscuousMode
= 0;
359 SFLADD_ELEMENT(cs
, &elem
);
361 /* Include LACP counters and identifiers if this port is part of a LAG. */
362 if (ofproto_port_get_lacp_stats(dsp
->ofport
, &lacp_stats
) == 0) {
363 memset(&lacp_elem
, 0, sizeof lacp_elem
);
364 lacp_elem
.tag
= SFLCOUNTERS_LACP
;
365 lacp_elem
.counterBlock
.lacp
.actorSystemID
=
366 lacp_stats
.dot3adAggPortActorSystemID
;
367 lacp_elem
.counterBlock
.lacp
.partnerSystemID
=
368 lacp_stats
.dot3adAggPortPartnerOperSystemID
;
369 lacp_elem
.counterBlock
.lacp
.attachedAggID
=
370 lacp_stats
.dot3adAggPortAttachedAggID
;
371 lacp_elem
.counterBlock
.lacp
.portState
.v
.actorAdmin
=
372 lacp_stats
.dot3adAggPortActorAdminState
;
373 lacp_elem
.counterBlock
.lacp
.portState
.v
.actorOper
=
374 lacp_stats
.dot3adAggPortActorOperState
;
375 lacp_elem
.counterBlock
.lacp
.portState
.v
.partnerAdmin
=
376 lacp_stats
.dot3adAggPortPartnerAdminState
;
377 lacp_elem
.counterBlock
.lacp
.portState
.v
.partnerOper
=
378 lacp_stats
.dot3adAggPortPartnerOperState
;
379 lacp_elem
.counterBlock
.lacp
.LACPDUsRx
=
380 lacp_stats
.dot3adAggPortStatsLACPDUsRx
;
381 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerPDUsRx
);
382 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerResponsePDUsRx
);
383 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.unknownRx
);
384 lacp_elem
.counterBlock
.lacp
.illegalRx
=
385 lacp_stats
.dot3adAggPortStatsIllegalRx
;
386 lacp_elem
.counterBlock
.lacp
.LACPDUsTx
=
387 lacp_stats
.dot3adAggPortStatsLACPDUsTx
;
388 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerPDUsTx
);
389 SFL_UNDEF_COUNTER(lacp_elem
.counterBlock
.lacp
.markerResponsePDUsTx
);
390 SFLADD_ELEMENT(cs
, &lacp_elem
);
393 /* Include Port name. */
394 if ((ifName
= netdev_get_name(dsp
->ofport
->netdev
)) != NULL
) {
395 memset(&name_elem
, 0, sizeof name_elem
);
396 name_elem
.tag
= SFLCOUNTERS_PORTNAME
;
397 name_elem
.counterBlock
.portName
.portName
.str
= (char *)ifName
;
398 name_elem
.counterBlock
.portName
.portName
.len
= strlen(ifName
);
399 SFLADD_ELEMENT(cs
, &name_elem
);
402 /* Include OpenFlow DPID and openflow port number. */
403 memset(&of_elem
, 0, sizeof of_elem
);
404 of_elem
.tag
= SFLCOUNTERS_OPENFLOWPORT
;
405 of_elem
.counterBlock
.ofPort
.datapath_id
=
406 ofproto_get_datapath_id(dsp
->ofport
->ofproto
);
407 of_elem
.counterBlock
.ofPort
.port_no
=
408 (OVS_FORCE
uint32_t)dsp
->ofport
->ofp_port
;
409 SFLADD_ELEMENT(cs
, &of_elem
);
411 sfl_poller_writeCountersSample(poller
, cs
);
414 /* Obtains an address to use for the local sFlow agent and stores it into
415 * '*agent_addr'. Returns true if successful, false on failure.
417 * The sFlow agent address should be a local IP address that is persistent and
418 * reachable over the network, if possible. The IP address associated with
419 * 'agent_device' is used if it has one, and otherwise 'control_ip', the IP
420 * address used to talk to the controller. If the agent device is not
421 * specified then it is figured out by taking a look at the routing table based
424 sflow_choose_agent_address(const char *agent_device
,
425 const struct sset
*targets
,
426 const char *control_ip
,
427 SFLAddress
*agent_addr
)
432 memset(agent_addr
, 0, sizeof *agent_addr
);
433 agent_addr
->type
= SFLADDRESSTYPE_IP_V4
;
436 if (!netdev_get_in4_by_name(agent_device
, &in4
)) {
441 SSET_FOR_EACH (target
, targets
) {
443 struct sockaddr_storage ss
;
444 struct sockaddr_in sin
;
448 if (inet_parse_active(target
, SFL_DEFAULT_COLLECTOR_PORT
, &sa
.ss
)
449 && sa
.ss
.ss_family
== AF_INET
) {
450 struct in6_addr addr6
, src
, gw
;
452 in6_addr_set_mapped_ipv4(&addr6
, sa
.sin
.sin_addr
.s_addr
);
453 if (ovs_router_lookup(&addr6
, name
, &src
, &gw
)) {
455 in4
.s_addr
= in6_addr_get_mapped_ipv4(&src
);
461 if (control_ip
&& !lookup_ip(control_ip
, &in4
)) {
465 VLOG_ERR("could not determine IP address for sFlow agent");
469 agent_addr
->address
.ip_v4
.addr
= (OVS_FORCE
uint32_t) in4
.s_addr
;
474 dpif_sflow_clear__(struct dpif_sflow
*ds
) OVS_REQUIRES(mutex
)
476 if (ds
->sflow_agent
) {
477 sflow_global_counters_subid_clear(ds
->sflow_agent
->subId
);
478 sfl_agent_release(ds
->sflow_agent
);
479 free(ds
->sflow_agent
);
480 ds
->sflow_agent
= NULL
;
482 collectors_destroy(ds
->collectors
);
483 ds
->collectors
= NULL
;
484 ofproto_sflow_options_destroy(ds
->options
);
487 /* Turn off sampling to save CPU cycles. */
492 dpif_sflow_clear(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
494 ovs_mutex_lock(&mutex
);
495 dpif_sflow_clear__(ds
);
496 ovs_mutex_unlock(&mutex
);
500 dpif_sflow_is_enabled(const struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
504 ovs_mutex_lock(&mutex
);
505 enabled
= ds
->collectors
!= NULL
;
506 ovs_mutex_unlock(&mutex
);
511 dpif_sflow_create(void)
513 static struct ovsthread_once once
= OVSTHREAD_ONCE_INITIALIZER
;
514 struct dpif_sflow
*ds
;
516 if (ovsthread_once_start(&once
)) {
517 ovs_mutex_init_recursive(&mutex
);
518 ovsthread_once_done(&once
);
521 ds
= xcalloc(1, sizeof *ds
);
522 ds
->next_tick
= time_now() + 1;
523 hmap_init(&ds
->ports
);
525 ovs_refcount_init(&ds
->ref_cnt
);
531 dpif_sflow_ref(const struct dpif_sflow
*ds_
)
533 struct dpif_sflow
*ds
= CONST_CAST(struct dpif_sflow
*, ds_
);
535 ovs_refcount_ref(&ds
->ref_cnt
);
540 /* 32-bit fraction of packets to sample with. A value of 0 samples no packets,
541 * a value of %UINT32_MAX samples all packets and intermediate values sample
542 * intermediate fractions of packets. */
544 dpif_sflow_get_probability(const struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
546 uint32_t probability
;
547 ovs_mutex_lock(&mutex
);
548 probability
= ds
->probability
;
549 ovs_mutex_unlock(&mutex
);
554 dpif_sflow_unref(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
556 if (ds
&& ovs_refcount_unref_relaxed(&ds
->ref_cnt
) == 1) {
557 struct dpif_sflow_port
*dsp
, *next
;
559 dpif_sflow_clear(ds
);
560 HMAP_FOR_EACH_SAFE (dsp
, next
, hmap_node
, &ds
->ports
) {
561 dpif_sflow_del_port__(ds
, dsp
);
563 hmap_destroy(&ds
->ports
);
569 dpif_sflow_add_poller(struct dpif_sflow
*ds
, struct dpif_sflow_port
*dsp
)
572 SFLPoller
*poller
= sfl_agent_addPoller(ds
->sflow_agent
, &dsp
->dsi
, ds
,
573 sflow_agent_get_counters
);
574 sfl_poller_set_sFlowCpInterval(poller
, ds
->options
->polling_interval
);
575 sfl_poller_set_sFlowCpReceiver(poller
, RECEIVER_INDEX
);
576 sfl_poller_set_bridgePort(poller
, odp_to_u32(dsp
->odp_port
));
579 static enum dpif_sflow_tunnel_type
580 dpif_sflow_tunnel_type(struct ofport
*ofport
) {
581 const char *type
= netdev_get_type(ofport
->netdev
);
583 if (strcmp(type
, "gre") == 0) {
584 return DPIF_SFLOW_TUNNEL_GRE
;
585 } else if (strcmp(type
, "ipsec_gre") == 0) {
586 return DPIF_SFLOW_TUNNEL_IPSEC_GRE
;
587 } else if (strcmp(type
, "vxlan") == 0) {
588 return DPIF_SFLOW_TUNNEL_VXLAN
;
589 } else if (strcmp(type
, "lisp") == 0) {
590 return DPIF_SFLOW_TUNNEL_LISP
;
591 } else if (strcmp(type
, "geneve") == 0) {
592 return DPIF_SFLOW_TUNNEL_GENEVE
;
595 return DPIF_SFLOW_TUNNEL_UNKNOWN
;
599 dpif_sflow_tunnel_proto(enum dpif_sflow_tunnel_type tunnel_type
)
601 /* Default to 0 (IPPROTO_IP), meaning "unknown". */
603 switch(tunnel_type
) {
605 case DPIF_SFLOW_TUNNEL_GRE
:
606 ipproto
= IPPROTO_GRE
;
609 case DPIF_SFLOW_TUNNEL_IPSEC_GRE
:
610 ipproto
= IPPROTO_ESP
;
613 case DPIF_SFLOW_TUNNEL_VXLAN
:
614 case DPIF_SFLOW_TUNNEL_LISP
:
615 case DPIF_SFLOW_TUNNEL_GENEVE
:
616 ipproto
= IPPROTO_UDP
;
618 case DPIF_SFLOW_TUNNEL_UNKNOWN
:
625 dpif_sflow_add_port(struct dpif_sflow
*ds
, struct ofport
*ofport
,
626 odp_port_t odp_port
) OVS_EXCLUDED(mutex
)
628 struct dpif_sflow_port
*dsp
;
630 enum dpif_sflow_tunnel_type tunnel_type
;
632 ovs_mutex_lock(&mutex
);
633 dpif_sflow_del_port(ds
, odp_port
);
635 tunnel_type
= dpif_sflow_tunnel_type(ofport
);
636 ifindex
= netdev_get_ifindex(ofport
->netdev
);
639 && tunnel_type
== DPIF_SFLOW_TUNNEL_UNKNOWN
) {
640 /* Not an ifindex port, and not a tunnel port either
641 * so do not add a cross-reference to it here.
646 /* Add to table of ports. */
647 dsp
= xmalloc(sizeof *dsp
);
648 dsp
->ofport
= ofport
;
649 dsp
->odp_port
= odp_port
;
650 dsp
->tunnel_type
= tunnel_type
;
651 hmap_insert(&ds
->ports
, &dsp
->hmap_node
, hash_odp_port(odp_port
));
654 /* Add poller for ports that have ifindex. */
655 SFL_DS_SET(dsp
->dsi
, SFL_DSCLASS_IFINDEX
, ifindex
, 0);
656 if (ds
->sflow_agent
) {
657 dpif_sflow_add_poller(ds
, dsp
);
660 /* Record "ifindex unknown" for the others */
661 SFL_DS_SET(dsp
->dsi
, SFL_DSCLASS_IFINDEX
, 0, 0);
665 ovs_mutex_unlock(&mutex
);
669 dpif_sflow_del_port__(struct dpif_sflow
*ds
, struct dpif_sflow_port
*dsp
)
673 && SFL_DS_INDEX(dsp
->dsi
)) {
674 sfl_agent_removePoller(ds
->sflow_agent
, &dsp
->dsi
);
675 sfl_agent_removeSampler(ds
->sflow_agent
, &dsp
->dsi
);
677 hmap_remove(&ds
->ports
, &dsp
->hmap_node
);
682 dpif_sflow_del_port(struct dpif_sflow
*ds
, odp_port_t odp_port
)
685 struct dpif_sflow_port
*dsp
;
687 ovs_mutex_lock(&mutex
);
688 dsp
= dpif_sflow_find_port(ds
, odp_port
);
690 dpif_sflow_del_port__(ds
, dsp
);
692 ovs_mutex_unlock(&mutex
);
696 dpif_sflow_set_options(struct dpif_sflow
*ds
,
697 const struct ofproto_sflow_options
*options
)
700 struct dpif_sflow_port
*dsp
;
701 bool options_changed
;
702 SFLReceiver
*receiver
;
705 SFLDataSource_instance dsi
;
710 ovs_mutex_lock(&mutex
);
711 if (sset_is_empty(&options
->targets
) || !options
->sampling_rate
) {
712 /* No point in doing any work if there are no targets or nothing to
714 dpif_sflow_clear__(ds
);
718 options_changed
= (!ds
->options
719 || !ofproto_sflow_options_equal(options
, ds
->options
));
721 /* Configure collectors if options have changed or if we're shortchanged in
722 * collectors (which indicates that opening one or more of the configured
723 * collectors failed, so that we should retry). */
725 || collectors_count(ds
->collectors
) < sset_count(&options
->targets
)) {
726 collectors_destroy(ds
->collectors
);
727 collectors_create(&options
->targets
, SFL_DEFAULT_COLLECTOR_PORT
,
729 if (ds
->collectors
== NULL
) {
730 VLOG_WARN_RL(&rl
, "no collectors could be initialized, "
732 dpif_sflow_clear__(ds
);
737 /* Choose agent IP address and agent device (if not yet setup) */
738 if (!sflow_choose_agent_address(options
->agent_device
,
740 options
->control_ip
, &agentIP
)) {
741 dpif_sflow_clear__(ds
);
745 /* Avoid reconfiguring if options didn't change. */
746 if (!options_changed
) {
749 ofproto_sflow_options_destroy(ds
->options
);
750 ds
->options
= ofproto_sflow_options_clone(options
);
753 VLOG_INFO("creating sFlow agent %d", options
->sub_id
);
754 if (ds
->sflow_agent
) {
755 sflow_global_counters_subid_clear(ds
->sflow_agent
->subId
);
756 sfl_agent_release(ds
->sflow_agent
);
758 ds
->sflow_agent
= xcalloc(1, sizeof *ds
->sflow_agent
);
760 sfl_agent_init(ds
->sflow_agent
,
763 now
, /* Boot time. */
764 now
, /* Current time. */
765 ds
, /* Pointer supplied to callbacks. */
766 sflow_agent_alloc_cb
,
768 sflow_agent_error_cb
,
769 sflow_agent_send_packet_cb
);
771 receiver
= sfl_agent_addReceiver(ds
->sflow_agent
);
772 sfl_receiver_set_sFlowRcvrOwner(receiver
, "Open vSwitch sFlow");
773 sfl_receiver_set_sFlowRcvrTimeout(receiver
, 0xffffffff);
775 /* Set the sampling_rate down in the datapath. */
776 ds
->probability
= MAX(1, UINT32_MAX
/ ds
->options
->sampling_rate
);
778 /* Add a single sampler for the bridge. This appears as a PHYSICAL_ENTITY
779 because it is associated with the hypervisor, and interacts with the server
780 hardware directly. The sub_id is used to distinguish this sampler from
781 others on other bridges within the same agent. */
782 dsIndex
= 1000 + options
->sub_id
;
783 SFL_DS_SET(dsi
, SFL_DSCLASS_PHYSICAL_ENTITY
, dsIndex
, 0);
784 sampler
= sfl_agent_addSampler(ds
->sflow_agent
, &dsi
);
785 sfl_sampler_set_sFlowFsPacketSamplingRate(sampler
, ds
->options
->sampling_rate
);
786 sfl_sampler_set_sFlowFsMaximumHeaderSize(sampler
, ds
->options
->header_len
);
787 sfl_sampler_set_sFlowFsReceiver(sampler
, RECEIVER_INDEX
);
789 /* Add a counter poller for the bridge so we can use it to send
790 global counters such as datapath cache hit/miss stats. */
791 poller
= sfl_agent_addPoller(ds
->sflow_agent
, &dsi
, ds
,
792 sflow_agent_get_global_counters
);
793 sfl_poller_set_sFlowCpInterval(poller
, ds
->options
->polling_interval
);
794 sfl_poller_set_sFlowCpReceiver(poller
, RECEIVER_INDEX
);
796 /* Add pollers for the currently known ifindex-ports */
797 HMAP_FOR_EACH (dsp
, hmap_node
, &ds
->ports
) {
798 if (SFL_DS_INDEX(dsp
->dsi
)) {
799 dpif_sflow_add_poller(ds
, dsp
);
805 ovs_mutex_unlock(&mutex
);
809 dpif_sflow_odp_port_to_ifindex(const struct dpif_sflow
*ds
,
810 odp_port_t odp_port
) OVS_EXCLUDED(mutex
)
812 struct dpif_sflow_port
*dsp
;
815 ovs_mutex_lock(&mutex
);
816 dsp
= dpif_sflow_find_port(ds
, odp_port
);
817 ret
= dsp
? SFL_DS_INDEX(dsp
->dsi
) : 0;
818 ovs_mutex_unlock(&mutex
);
823 dpif_sflow_tunnel_v4(uint8_t tunnel_ipproto
,
824 const struct flow_tnl
*tunnel
,
825 SFLSampled_ipv4
*ipv4
)
828 ipv4
->protocol
= tunnel_ipproto
;
829 ipv4
->tos
= tunnel
->ip_tos
;
830 ipv4
->src_ip
.addr
= (OVS_FORCE
uint32_t) tunnel
->ip_src
;
831 ipv4
->dst_ip
.addr
= (OVS_FORCE
uint32_t) tunnel
->ip_dst
;
832 ipv4
->src_port
= (OVS_FORCE
uint16_t) tunnel
->tp_src
;
833 ipv4
->dst_port
= (OVS_FORCE
uint16_t) tunnel
->tp_dst
;
837 dpif_sflow_push_mpls_lse(struct dpif_sflow_actions
*sflow_actions
,
840 if (sflow_actions
->mpls_stack_depth
>= FLOW_MAX_MPLS_LABELS
) {
841 sflow_actions
->mpls_err
= true;
845 /* Record the new lse in host-byte-order. */
846 /* BOS flag will be fixed later when we send stack to sFlow library. */
847 sflow_actions
->mpls_lse
[sflow_actions
->mpls_stack_depth
++] = ntohl(lse
);
851 dpif_sflow_pop_mpls_lse(struct dpif_sflow_actions
*sflow_actions
)
853 if (sflow_actions
->mpls_stack_depth
== 0) {
854 sflow_actions
->mpls_err
= true;
857 sflow_actions
->mpls_stack_depth
--;
861 dpif_sflow_set_mpls(struct dpif_sflow_actions
*sflow_actions
,
862 const struct ovs_key_mpls
*mpls_key
, int n
)
865 if (n
> FLOW_MAX_MPLS_LABELS
) {
866 sflow_actions
->mpls_err
= true;
870 for (ii
= 0; ii
< n
; ii
++) {
871 /* Reverse stack order, and use host-byte-order for each lse. */
872 sflow_actions
->mpls_lse
[n
- ii
- 1] = ntohl(mpls_key
[ii
].mpls_lse
);
874 sflow_actions
->mpls_stack_depth
= n
;
878 sflow_read_tnl_push_action(const struct nlattr
*attr
,
879 struct dpif_sflow_actions
*sflow_actions
)
881 /* Modeled on lib/odp-util.c: format_odp_tnl_push_header */
882 const struct ovs_action_push_tnl
*data
= nl_attr_get(attr
);
883 const struct eth_header
*eth
= (const struct eth_header
*) data
->header
;
884 const struct ip_header
*ip
885 = ALIGNED_CAST(const struct ip_header
*, eth
+ 1);
887 sflow_actions
->out_port
= u32_to_odp(data
->out_port
);
890 /* TODO: SFlow does not currently define a MAC-in-MAC
891 * encapsulation structure. We could use an extension
892 * structure to report this.
896 /* Cannot assume alignment so just use memcpy. */
897 sflow_actions
->tunnel
.ip_src
= get_16aligned_be32(&ip
->ip_src
);
898 sflow_actions
->tunnel
.ip_dst
= get_16aligned_be32(&ip
->ip_dst
);
899 sflow_actions
->tunnel
.ip_tos
= ip
->ip_tos
;
900 sflow_actions
->tunnel
.ip_ttl
= ip
->ip_ttl
;
901 /* The tnl_push action can supply the ip_protocol too. */
902 sflow_actions
->tunnel_ipproto
= ip
->ip_proto
;
905 if (data
->tnl_type
== OVS_VPORT_TYPE_VXLAN
906 || data
->tnl_type
== OVS_VPORT_TYPE_GENEVE
) {
907 const struct udp_header
*udp
= (const struct udp_header
*) (ip
+ 1);
908 sflow_actions
->tunnel
.tp_src
= udp
->udp_src
;
909 sflow_actions
->tunnel
.tp_dst
= udp
->udp_dst
;
911 if (data
->tnl_type
== OVS_VPORT_TYPE_VXLAN
) {
912 const struct vxlanhdr
*vxh
= (const struct vxlanhdr
*) (udp
+ 1);
913 uint64_t tun_id
= ntohl(get_16aligned_be32(&vxh
->vx_vni
)) >> 8;
914 sflow_actions
->tunnel
.tun_id
= htonll(tun_id
);
916 const struct genevehdr
*gnh
= (const struct genevehdr
*) (udp
+ 1);
917 uint64_t tun_id
= ntohl(get_16aligned_be32(&gnh
->vni
)) >> 8;
918 sflow_actions
->tunnel
.tun_id
= htonll(tun_id
);
920 } else if (data
->tnl_type
== OVS_VPORT_TYPE_GRE
) {
921 const void *l4
= ip
+ 1;
922 const struct gre_base_hdr
*greh
= (const struct gre_base_hdr
*) l4
;
923 ovs_16aligned_be32
*options
= (ovs_16aligned_be32
*)(greh
+ 1);
924 if (greh
->flags
& htons(GRE_CSUM
)) {
927 if (greh
->flags
& htons(GRE_KEY
)) {
928 uint64_t tun_id
= ntohl(get_16aligned_be32(options
));
929 sflow_actions
->tunnel
.tun_id
= htonll(tun_id
);
935 sflow_read_set_action(const struct nlattr
*attr
,
936 struct dpif_sflow_actions
*sflow_actions
)
938 enum ovs_key_attr type
= nl_attr_type(attr
);
940 case OVS_KEY_ATTR_ENCAP
:
941 if (++sflow_actions
->encap_depth
> 1) {
942 /* Do not handle multi-encap for now. */
943 sflow_actions
->tunnel_err
= true;
945 dpif_sflow_read_actions(NULL
,
946 nl_attr_get(attr
), nl_attr_get_size(attr
),
950 case OVS_KEY_ATTR_PRIORITY
:
951 case OVS_KEY_ATTR_SKB_MARK
:
952 case OVS_KEY_ATTR_DP_HASH
:
953 case OVS_KEY_ATTR_RECIRC_ID
:
956 case OVS_KEY_ATTR_TUNNEL
: {
957 if (++sflow_actions
->encap_depth
> 1) {
958 /* Do not handle multi-encap for now. */
959 sflow_actions
->tunnel_err
= true;
961 if (odp_tun_key_from_attr(attr
, &sflow_actions
->tunnel
)
963 /* Tunnel parsing error. */
964 sflow_actions
->tunnel_err
= true;
970 case OVS_KEY_ATTR_IN_PORT
:
971 case OVS_KEY_ATTR_ETHERNET
:
972 case OVS_KEY_ATTR_VLAN
:
975 case OVS_KEY_ATTR_MPLS
: {
976 const struct ovs_key_mpls
*mpls_key
= nl_attr_get(attr
);
977 size_t size
= nl_attr_get_size(attr
);
978 dpif_sflow_set_mpls(sflow_actions
, mpls_key
, size
/ sizeof *mpls_key
);
982 case OVS_KEY_ATTR_ETHERTYPE
:
983 case OVS_KEY_ATTR_IPV4
:
984 if (sflow_actions
->encap_depth
== 1) {
985 const struct ovs_key_ipv4
*key
= nl_attr_get(attr
);
987 sflow_actions
->tunnel
.ip_src
= key
->ipv4_src
;
990 sflow_actions
->tunnel
.ip_dst
= key
->ipv4_dst
;
992 if (key
->ipv4_proto
) {
993 sflow_actions
->tunnel_ipproto
= key
->ipv4_proto
;
996 sflow_actions
->tunnel
.ip_tos
= key
->ipv4_tos
;
999 sflow_actions
->tunnel
.ip_tos
= key
->ipv4_ttl
;
1004 case OVS_KEY_ATTR_IPV6
:
1005 /* TODO: parse IPv6 encap. */
1008 /* These have the same structure and format. */
1009 case OVS_KEY_ATTR_TCP
:
1010 case OVS_KEY_ATTR_UDP
:
1011 case OVS_KEY_ATTR_SCTP
:
1012 if (sflow_actions
->encap_depth
== 1) {
1013 const struct ovs_key_tcp
*key
= nl_attr_get(attr
);
1015 sflow_actions
->tunnel
.tp_src
= key
->tcp_src
;
1018 sflow_actions
->tunnel
.tp_dst
= key
->tcp_dst
;
1023 case OVS_KEY_ATTR_TCP_FLAGS
:
1024 case OVS_KEY_ATTR_ICMP
:
1025 case OVS_KEY_ATTR_ICMPV6
:
1026 case OVS_KEY_ATTR_ARP
:
1027 case OVS_KEY_ATTR_ND
:
1028 case OVS_KEY_ATTR_CT_STATE
:
1029 case OVS_KEY_ATTR_CT_ZONE
:
1030 case OVS_KEY_ATTR_CT_MARK
:
1031 case OVS_KEY_ATTR_CT_LABELS
:
1032 case OVS_KEY_ATTR_UNSPEC
:
1033 case __OVS_KEY_ATTR_MAX
:
1040 dpif_sflow_capture_input_mpls(const struct flow
*flow
,
1041 struct dpif_sflow_actions
*sflow_actions
)
1043 if (eth_type_mpls(flow
->dl_type
)) {
1047 /* Calculate depth by detecting BOS. */
1048 for (ii
= 0; ii
< FLOW_MAX_MPLS_LABELS
; ii
++) {
1049 lse
= flow
->mpls_lse
[ii
];
1051 if (lse
& htonl(MPLS_BOS_MASK
)) {
1055 /* Capture stack, reversing stack order, and
1056 * using host-byte-order for each lse. BOS flag
1057 * is ignored for now. It is set later when
1058 * the output stack is encoded.
1060 for (ii
= 0; ii
< depth
; ii
++) {
1061 lse
= flow
->mpls_lse
[ii
];
1062 sflow_actions
->mpls_lse
[depth
- ii
- 1] = ntohl(lse
);
1064 sflow_actions
->mpls_stack_depth
= depth
;
1069 dpif_sflow_read_actions(const struct flow
*flow
,
1070 const struct nlattr
*actions
, size_t actions_len
,
1071 struct dpif_sflow_actions
*sflow_actions
)
1073 const struct nlattr
*a
;
1076 if (actions_len
== 0) {
1077 /* Packet dropped.*/
1082 /* Make sure the MPLS output stack
1083 * is seeded with the input stack.
1085 dpif_sflow_capture_input_mpls(flow
, sflow_actions
);
1087 /* XXX when 802.1AD(QinQ) is supported then
1088 * we can do the same with VLAN stacks here
1092 NL_ATTR_FOR_EACH (a
, left
, actions
, actions_len
) {
1093 enum ovs_action_attr type
= nl_attr_type(a
);
1095 case OVS_ACTION_ATTR_OUTPUT
:
1096 /* Capture the output port in case we need it
1097 * to get the output tunnel type.
1099 sflow_actions
->out_port
= u32_to_odp(nl_attr_get_u32(a
));
1102 case OVS_ACTION_ATTR_TUNNEL_POP
:
1103 /* XXX: Do not handle this for now. It's not clear
1104 * if we should start with encap_depth == 1 when we
1105 * see an input tunnel, or if we should assume
1106 * that the input tunnel was always "popped" if it
1107 * was presented to us decoded in flow->tunnel?
1109 * If we do handle this it might look like this,
1110 * as we clear the captured tunnel info and decrement
1113 * memset(&sflow_actions->tunnel, 0, sizeof struct flow_tnl);
1114 * sflow_actions->tunnel_ipproto = 0;
1115 * --sflow_actions->encap_depth;
1117 * but for now just disable the tunnel annotation:
1119 sflow_actions
->tunnel_err
= true;
1122 case OVS_ACTION_ATTR_TUNNEL_PUSH
:
1123 /* XXX: This actions appears to come with it's own
1124 * OUTPUT action, so should it be regarded as having
1125 * an implicit "pop" following it too? Put another
1126 * way, would two tnl_push() actions in succession
1127 * result in a packet with two layers of encap?
1129 if (++sflow_actions
->encap_depth
> 1) {
1130 /* Do not handle multi-encap for now. */
1131 sflow_actions
->tunnel_err
= true;
1133 sflow_read_tnl_push_action(a
, sflow_actions
);
1137 case OVS_ACTION_ATTR_TRUNC
:
1138 case OVS_ACTION_ATTR_USERSPACE
:
1139 case OVS_ACTION_ATTR_RECIRC
:
1140 case OVS_ACTION_ATTR_HASH
:
1141 case OVS_ACTION_ATTR_CT
:
1144 case OVS_ACTION_ATTR_SET_MASKED
:
1145 /* TODO: apply mask. XXX: Are we likely to see this? */
1148 case OVS_ACTION_ATTR_SET
:
1149 sflow_read_set_action(nl_attr_get(a
), sflow_actions
);
1152 case OVS_ACTION_ATTR_PUSH_VLAN
:
1153 case OVS_ACTION_ATTR_POP_VLAN
:
1154 /* TODO: 802.1AD(QinQ) is not supported by OVS (yet), so do not
1155 * construct a VLAN-stack. The sFlow user-action cookie already
1156 * captures the egress VLAN ID so there is nothing more to do here.
1160 case OVS_ACTION_ATTR_PUSH_MPLS
: {
1161 const struct ovs_action_push_mpls
*mpls
= nl_attr_get(a
);
1163 dpif_sflow_push_mpls_lse(sflow_actions
, mpls
->mpls_lse
);
1167 case OVS_ACTION_ATTR_POP_MPLS
: {
1168 dpif_sflow_pop_mpls_lse(sflow_actions
);
1171 case OVS_ACTION_ATTR_SAMPLE
:
1172 case OVS_ACTION_ATTR_UNSPEC
:
1173 case __OVS_ACTION_ATTR_MAX
:
1181 dpif_sflow_encode_mpls_stack(SFLLabelStack
*stack
,
1182 uint32_t *mpls_lse_buf
,
1183 const struct dpif_sflow_actions
*sflow_actions
)
1185 /* Put the MPLS stack back into "packet header" order,
1186 * and make sure the BOS flag is set correctly on the last
1187 * one. Each lse is still in host-byte-order.
1191 stack
->depth
= sflow_actions
->mpls_stack_depth
;
1192 stack
->stack
= mpls_lse_buf
;
1193 for (ii
= 0; ii
< stack
->depth
; ii
++) {
1194 lse
= sflow_actions
->mpls_lse
[stack
->depth
- ii
- 1];
1195 stack
->stack
[ii
] = (lse
& ~MPLS_BOS_MASK
);
1197 stack
->stack
[stack
->depth
- 1] |= MPLS_BOS_MASK
;
1200 /* Extract the output port count from the user action cookie.
1201 * See http://sflow.org/sflow_version_5.txt "Input/Output port information"
1204 dpif_sflow_cookie_num_outputs(const union user_action_cookie
*cookie
)
1206 uint32_t format
= cookie
->sflow
.output
& 0xC0000000;
1207 uint32_t port_n
= cookie
->sflow
.output
& 0x3FFFFFFF;
1209 return port_n
? 1 : 0;
1211 else if (format
== 0x80000000) {
1218 dpif_sflow_received(struct dpif_sflow
*ds
, const struct dp_packet
*packet
,
1219 const struct flow
*flow
, odp_port_t odp_in_port
,
1220 const union user_action_cookie
*cookie
,
1221 const struct dpif_sflow_actions
*sflow_actions
)
1224 SFL_FLOW_SAMPLE_TYPE fs
;
1225 SFLFlow_sample_element hdrElem
;
1226 SFLSampled_header
*header
;
1227 SFLFlow_sample_element switchElem
;
1228 uint8_t tnlInProto
, tnlOutProto
;
1229 SFLFlow_sample_element tnlInElem
, tnlOutElem
;
1230 SFLFlow_sample_element vniInElem
, vniOutElem
;
1231 SFLFlow_sample_element mplsElem
;
1232 uint32_t mpls_lse_buf
[FLOW_MAX_MPLS_LABELS
];
1233 SFLSampler
*sampler
;
1234 struct dpif_sflow_port
*in_dsp
;
1235 struct dpif_sflow_port
*out_dsp
;
1238 ovs_mutex_lock(&mutex
);
1239 sampler
= ds
->sflow_agent
->samplers
;
1244 /* Build a flow sample. */
1245 memset(&fs
, 0, sizeof fs
);
1247 /* Look up the input ifIndex if this port has one. Otherwise just
1248 * leave it as 0 (meaning 'unknown') and continue. */
1249 in_dsp
= dpif_sflow_find_port(ds
, odp_in_port
);
1251 fs
.input
= SFL_DS_INDEX(in_dsp
->dsi
);
1254 /* Make the assumption that the random number generator in the datapath converges
1255 * to the configured mean, and just increment the samplePool by the configured
1256 * sampling rate every time. */
1257 sampler
->samplePool
+= sfl_sampler_get_sFlowFsPacketSamplingRate(sampler
);
1259 /* Sampled header. */
1260 memset(&hdrElem
, 0, sizeof hdrElem
);
1261 hdrElem
.tag
= SFLFLOW_HEADER
;
1262 header
= &hdrElem
.flowType
.header
;
1263 header
->header_protocol
= SFLHEADER_ETHERNET_ISO8023
;
1264 /* The frame_length should include the Ethernet FCS (4 bytes),
1265 * but it has already been stripped, so we need to add 4 here. */
1266 header
->frame_length
= dp_packet_size(packet
) + 4;
1267 /* Ethernet FCS stripped off. */
1268 header
->stripped
= 4;
1269 header
->header_length
= MIN(dp_packet_size(packet
),
1270 sampler
->sFlowFsMaximumHeaderSize
);
1271 header
->header_bytes
= dp_packet_data(packet
);
1273 /* Add extended switch element. */
1274 memset(&switchElem
, 0, sizeof(switchElem
));
1275 switchElem
.tag
= SFLFLOW_EX_SWITCH
;
1276 switchElem
.flowType
.sw
.src_vlan
= vlan_tci_to_vid(flow
->vlan_tci
);
1277 switchElem
.flowType
.sw
.src_priority
= vlan_tci_to_pcp(flow
->vlan_tci
);
1279 /* Retrieve data from user_action_cookie. */
1280 vlan_tci
= cookie
->sflow
.vlan_tci
;
1281 switchElem
.flowType
.sw
.dst_vlan
= vlan_tci_to_vid(vlan_tci
);
1282 switchElem
.flowType
.sw
.dst_priority
= vlan_tci_to_pcp(vlan_tci
);
1284 fs
.output
= cookie
->sflow
.output
;
1287 if (flow
->tunnel
.ip_dst
) {
1288 memset(&tnlInElem
, 0, sizeof(tnlInElem
));
1289 tnlInElem
.tag
= SFLFLOW_EX_IPV4_TUNNEL_INGRESS
;
1290 tnlInProto
= in_dsp
? dpif_sflow_tunnel_proto(in_dsp
->tunnel_type
) : 0;
1291 dpif_sflow_tunnel_v4(tnlInProto
,
1293 &tnlInElem
.flowType
.ipv4
);
1294 SFLADD_ELEMENT(&fs
, &tnlInElem
);
1295 if (flow
->tunnel
.tun_id
) {
1296 memset(&vniInElem
, 0, sizeof(vniInElem
));
1297 vniInElem
.tag
= SFLFLOW_EX_VNI_INGRESS
;
1298 vniInElem
.flowType
.tunnel_vni
.vni
1299 = ntohll(flow
->tunnel
.tun_id
);
1300 SFLADD_ELEMENT(&fs
, &vniInElem
);
1304 /* Output tunnel. */
1306 && sflow_actions
->encap_depth
== 1
1307 && !sflow_actions
->tunnel_err
1308 && dpif_sflow_cookie_num_outputs(cookie
) == 1) {
1309 tnlOutProto
= sflow_actions
->tunnel_ipproto
;
1310 if (tnlOutProto
== 0) {
1311 /* Try to infer the ip-protocol from the output port. */
1312 if (sflow_actions
->out_port
!= ODPP_NONE
) {
1313 out_dsp
= dpif_sflow_find_port(ds
, sflow_actions
->out_port
);
1315 tnlOutProto
= dpif_sflow_tunnel_proto(out_dsp
->tunnel_type
);
1319 memset(&tnlOutElem
, 0, sizeof(tnlOutElem
));
1320 tnlOutElem
.tag
= SFLFLOW_EX_IPV4_TUNNEL_EGRESS
;
1321 dpif_sflow_tunnel_v4(tnlOutProto
,
1322 &sflow_actions
->tunnel
,
1323 &tnlOutElem
.flowType
.ipv4
);
1324 SFLADD_ELEMENT(&fs
, &tnlOutElem
);
1325 if (sflow_actions
->tunnel
.tun_id
) {
1326 memset(&vniOutElem
, 0, sizeof(vniOutElem
));
1327 vniOutElem
.tag
= SFLFLOW_EX_VNI_EGRESS
;
1328 vniOutElem
.flowType
.tunnel_vni
.vni
1329 = ntohll(sflow_actions
->tunnel
.tun_id
);
1330 SFLADD_ELEMENT(&fs
, &vniOutElem
);
1334 /* MPLS output label stack. */
1336 && sflow_actions
->mpls_stack_depth
> 0
1337 && !sflow_actions
->mpls_err
1338 && dpif_sflow_cookie_num_outputs(cookie
) == 1) {
1339 memset(&mplsElem
, 0, sizeof(mplsElem
));
1340 mplsElem
.tag
= SFLFLOW_EX_MPLS
;
1341 dpif_sflow_encode_mpls_stack(&mplsElem
.flowType
.mpls
.out_stack
,
1344 SFLADD_ELEMENT(&fs
, &mplsElem
);
1347 /* Submit the flow sample to be encoded into the next datagram. */
1348 SFLADD_ELEMENT(&fs
, &hdrElem
);
1349 SFLADD_ELEMENT(&fs
, &switchElem
);
1350 sfl_sampler_writeFlowSample(sampler
, &fs
);
1353 ovs_mutex_unlock(&mutex
);
1357 dpif_sflow_run(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
1359 ovs_mutex_lock(&mutex
);
1360 if (ds
->collectors
!= NULL
) {
1361 time_t now
= time_now();
1363 if (now
>= ds
->next_tick
) {
1364 sfl_agent_tick(ds
->sflow_agent
, time_wall());
1365 ds
->next_tick
= now
+ 1;
1368 ovs_mutex_unlock(&mutex
);
1372 dpif_sflow_wait(struct dpif_sflow
*ds
) OVS_EXCLUDED(mutex
)
1374 ovs_mutex_lock(&mutex
);
1375 if (ds
->collectors
!= NULL
) {
1376 poll_timer_wait_until(ds
->next_tick
* 1000LL);
1378 ovs_mutex_unlock(&mutex
);