-
Notifications
You must be signed in to change notification settings - Fork 390
/
controller_peer.cc
2459 lines (2180 loc) · 98.7 KB
/
controller_peer.cc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#include <base/util.h>
#include <base/logging.h>
#include <base/connection_info.h>
#include <net/bgp_af.h>
#include <sandesh/sandesh.h>
#include <sandesh/sandesh_types.h>
#include "cmn/agent_cmn.h"
#include "controller/controller_peer.h"
#include "controller/controller_ifmap.h"
#include "controller/controller_vrf_export.h"
#include "controller/controller_init.h"
#include "oper/operdb_init.h"
#include "oper/vrf.h"
#include "oper/nexthop.h"
#include "oper/tunnel_nh.h"
#include "oper/mirror_table.h"
#include "oper/multicast.h"
#include "oper/peer.h"
#include "oper/vxlan.h"
#include "oper/agent_path.h"
#include "pkt/agent_stats.h"
#include <pugixml/pugixml.hpp>
#include "xml/xml_pugi.h"
#include "xmpp/xmpp_init.h"
#include "xmpp_multicast_types.h"
#include "ifmap/ifmap_agent_table.h"
#include "controller/controller_types.h"
#include "net/tunnel_encap_type.h"
#include <assert.h>
#include <controller/controller_route_path.h>
#include <cfg/discovery_agent.h>
using namespace boost::asio;
using namespace autogen;
using process::ConnectionType;
using process::ConnectionStatus;
using process::ConnectionState;
// Parses string ipv4-addr/plen or ipv6-addr/plen
// Stores address in addr and returns plen
static int ParseAddress(const string &str, IpAddress *addr) {
size_t pos = str.find('/');
if (pos == string::npos) {
return -1;
}
int plen = 0;
boost::system::error_code ec;
string plen_str = str.substr(pos + 1);
if (plen_str == "32") {
Ip4Address ip4_addr;
ec = Ip4PrefixParse(str, &ip4_addr, &plen);
if (ec || plen != 32) {
return -1;
}
*addr = ip4_addr;
} else if (plen_str == "128") {
Ip6Address ip6_addr;
ec = Inet6PrefixParse(str, &ip6_addr, &plen);
if (ec || plen != 128) {
return -1;
}
*addr = ip6_addr;
} else {
return -1;
}
return plen;
}
AgentXmppChannel::AgentXmppChannel(Agent *agent,
const std::string &xmpp_server,
const std::string &label_range,
uint8_t xs_idx)
: channel_(NULL), xmpp_server_(xmpp_server), label_range_(label_range),
xs_idx_(xs_idx), agent_(agent), unicast_sequence_number_(0) {
bgp_peer_id_.reset();
}
AgentXmppChannel::~AgentXmppChannel() {
BgpPeer *bgp_peer = bgp_peer_id_.get();
assert(bgp_peer == NULL);
channel_->UnRegisterReceive(xmps::BGP);
channel_->UnRegisterWriteReady(xmps::BGP);
}
void AgentXmppChannel::RegisterXmppChannel(XmppChannel *channel) {
if (channel == NULL)
return;
channel_ = channel;
channel->RegisterReceive(xmps::BGP,
boost::bind(&AgentXmppChannel::ReceiveInternal,
this, _1));
}
std::string AgentXmppChannel::GetBgpPeerName() const {
if (bgp_peer_id_.get() == NULL)
return "No BGP peer";
return bgp_peer_id_.get()->GetName();
}
void AgentXmppChannel::CreateBgpPeer() {
assert(bgp_peer_id_.get() == NULL);
DBTableBase::ListenerId id =
agent_->vrf_table()->Register(boost::bind(&VrfExport::Notify,
agent_, this, _1, _2));
boost::system::error_code ec;
const string &addr = agent_->controller_ifmap_xmpp_server(xs_idx_);
Ip4Address ip = Ip4Address::from_string(addr.c_str(), ec);
assert(ec.value() == 0);
bgp_peer_id_.reset(new BgpPeer(ip, addr,
agent_->controller_xmpp_channel_ref(xs_idx_),
id, Peer::BGP_PEER));
}
void AgentXmppChannel::DeCommissionBgpPeer() {
//Unregister to db table is in destructor of peer. Unregister shud happen
//after dbstate for the id has happened w.r.t. this peer. If unregiter is
//done here, then there is a chance that it is reused and before state
//is removed it is overwritten. Also it may happen that state delete may be
//of somebody else.
// Add the peer to global decommisioned list
agent_->controller()->AddToDecommissionedPeerList(bgp_peer_id_);
//Reset channel BGP peer id
bgp_peer_id_.reset();
}
bool AgentXmppChannel::SendUpdate(uint8_t *msg, size_t size) {
if (agent_->stats())
agent_->stats()->incr_xmpp_out_msgs(xs_idx_);
return channel_->Send(msg, size, xmps::BGP,
boost::bind(&AgentXmppChannel::WriteReadyCb, this, _1));
}
void AgentXmppChannel::ReceiveEvpnUpdate(XmlPugi *pugi) {
pugi::xml_node node = pugi->FindNode("items");
pugi::xml_attribute attr = node.attribute("node");
char *saveptr;
strtok_r(const_cast<char *>(attr.value()), "/", &saveptr);
strtok_r(NULL, "/", &saveptr);
char *vrf_name = strtok_r(NULL, "", &saveptr);
const std::string vrf(vrf_name);
EvpnAgentRouteTable *rt_table =
static_cast<EvpnAgentRouteTable *>
(agent_->vrf_table()->GetEvpnRouteTable(vrf_name));
if (rt_table == NULL) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Invalid VRF. Ignoring route retract" +
string(attr.value()));
return;
}
pugi::xml_node node_check = pugi->FindNode("retract");
if (!pugi->IsNull(node_check)) {
for (node = node.first_child(); node; node = node.next_sibling()) {
if (strcmp(node.name(), "retract") == 0) {
std::string id = node.first_attribute().value();
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"EVPN Delete Node id:" + id);
char buff[id.length() + 1];
strcpy(buff, id.c_str());
// retract does not have nlri. Need to decode key fields from
// retract id. Format of retract-id expected are:
// 00:00:00:01:01:01,1.1.1.1/32 - Mac and IP for Non-VXLAN Encap
// 10-00:00:00:01:01:01,1.1.1.1/32 - VXLAN, mac, ip.
//
// In case of not finding pattern "-" whole string will be
// returned in token. So dont use it for ethernet_tag.
// Check for string length of saveptr to know if string was
// tokenised.
uint16_t offset = 0;
uint32_t ethernet_tag = 0;
saveptr = NULL;
// If id has "-", the value before "-" is treated as
// ethernet-tag
char *token = strtok_r(buff + offset, "-", &saveptr);
if ((strlen(saveptr) != 0) && token) {
ethernet_tag = atoi(token);
offset += strlen(token) + 1;
}
// Get MAC address. Its delimited by ","
token = strtok_r(buff + offset, ",", &saveptr);
if ((strlen(saveptr) == 0) || (token == NULL)) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing MAC from retract-id: " +id);
continue;
}
boost::system::error_code ec;
MacAddress mac(token, &ec);
if (ec) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error decoding MAC from retract-id: "+id);
continue;
}
offset += strlen(token) + 1;
IpAddress ip_addr;
if (ParseAddress(buff + offset, &ip_addr) < 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error decoding IP address from "
"retract-id: "+id);
continue;
}
if (mac == MacAddress::BroadcastMac()) {
//Deletes the peer path for all boradcast and
//traverses the subnet route in VRF to issue delete of peer
//for them as well.
TunnelOlist olist;
agent_->oper_db()->multicast()->
ModifyEvpnMembers(bgp_peer_id(),
vrf_name, olist,
ethernet_tag,
ControllerPeerPath::kInvalidPeerIdentifier);
//Ideally in non TSN node leaf olist is not to be
//present
if (agent_->tsn_enabled() == false)
return;
agent_->oper_db()->multicast()->
ModifyTorMembers(bgp_peer_id(),
vrf_name, olist,
ethernet_tag,
ControllerPeerPath::kInvalidPeerIdentifier);
} else {
rt_table->DeleteReq(bgp_peer_id(), vrf_name, mac,
ip_addr, ethernet_tag,
new ControllerVmRoute(bgp_peer_id()));
}
}
}
return;
}
//Call Auto-generated Code to return struct
auto_ptr<AutogenProperty> xparser(new AutogenProperty());
if (EnetItemsType::XmlParseProperty(node, &xparser) == false) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Xml Parsing for evpn Failed");
return;
}
EnetItemsType *items;
EnetItemType *item;
items = (static_cast<EnetItemsType *>(xparser.get()));
std::vector<EnetItemType>::iterator iter;
for (vector<EnetItemType>::iterator iter =items->item.begin();
iter != items->item.end(); iter++) {
item = &*iter;
if (item->entry.nlri.mac != "") {
AddEvpnRoute(vrf_name, item->entry.nlri.mac, item);
} else {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"NLRI missing mac address for evpn, failed parsing");
}
}
}
static TunnelType::TypeBmap
GetEnetTypeBitmap(const EnetTunnelEncapsulationListType &encap) {
TunnelType::TypeBmap bmap = 0;
for (EnetTunnelEncapsulationListType::const_iterator iter = encap.begin();
iter != encap.end(); iter++) {
TunnelEncapType::Encap encap =
TunnelEncapType::TunnelEncapFromString(*iter);
if (encap == TunnelEncapType::MPLS_O_GRE)
bmap |= (1 << TunnelType::MPLS_GRE);
if (encap == TunnelEncapType::MPLS_O_UDP)
bmap |= (1 << TunnelType::MPLS_UDP);
if (encap == TunnelEncapType::VXLAN)
bmap |= (1 << TunnelType::VXLAN);
}
return bmap;
}
static TunnelType::TypeBmap
GetTypeBitmap(const TunnelEncapsulationListType &encap) {
TunnelType::TypeBmap bmap = 0;
for (TunnelEncapsulationListType::const_iterator iter = encap.begin();
iter != encap.end(); iter++) {
TunnelEncapType::Encap encap =
TunnelEncapType::TunnelEncapFromString(*iter);
if (encap == TunnelEncapType::MPLS_O_GRE)
bmap |= (1 << TunnelType::MPLS_GRE);
if (encap == TunnelEncapType::MPLS_O_UDP)
bmap |= (1 << TunnelType::MPLS_UDP);
}
return bmap;
}
static TunnelType::TypeBmap
GetMcastTypeBitmap(const McastTunnelEncapsulationListType &encap) {
TunnelType::TypeBmap bmap = 0;
for (McastTunnelEncapsulationListType::const_iterator iter = encap.begin();
iter != encap.end(); iter++) {
TunnelEncapType::Encap encap =
TunnelEncapType::TunnelEncapFromString(*iter);
if (encap == TunnelEncapType::MPLS_O_GRE)
bmap |= (1 << TunnelType::MPLS_GRE);
if (encap == TunnelEncapType::MPLS_O_UDP)
bmap |= (1 << TunnelType::MPLS_UDP);
}
return bmap;
}
void AgentXmppChannel::ReceiveMulticastUpdate(XmlPugi *pugi) {
pugi::xml_node node = pugi->FindNode("items");
pugi::xml_attribute attr = node.attribute("node");
char *saveptr;
strtok_r(const_cast<char *>(attr.value()), "/", &saveptr);
strtok_r(NULL, "/", &saveptr);
char *vrf_name = strtok_r(NULL, "", &saveptr);
const std::string vrf(vrf_name);
TunnelOlist olist;
pugi::xml_node node_check = pugi->FindNode("retract");
if (!pugi->IsNull(node_check)) {
pugi->ReadNode("retract"); //sets the context
std::string retract_id = pugi->ReadAttrib("id");
if (bgp_peer_id() != agent_->mulitcast_builder()->
bgp_peer_id()) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Ignore retract request from non multicast tree "
"builder peer; Multicast Delete Node id:" + retract_id);
return;
}
for (node = node.first_child(); node; node = node.next_sibling()) {
if (strcmp(node.name(), "retract") == 0) {
std::string id = node.first_attribute().value();
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Multicast Delete Node id:" + id);
// Parse identifier to obtain group,source
// <addr:VRF:Group,Source)
strtok_r(const_cast<char *>(id.c_str()), ":", &saveptr);
strtok_r(NULL, ":", &saveptr);
char *group = strtok_r(NULL, ",", &saveptr);
char *source = strtok_r(NULL, "", &saveptr);
if (group == NULL || source == NULL) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing multicast group address from retract id");
return;
}
boost::system::error_code ec;
IpAddress g_addr =
IpAddress::from_string(group, ec);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing multicast group address");
return;
}
IpAddress s_addr =
IpAddress::from_string(source, ec);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing multicast source address");
return;
}
//Retract with invalid identifier
agent_->oper_db()->multicast()->
ModifyFabricMembers(agent_->multicast_tree_builder_peer(),
vrf, g_addr.to_v4(),
s_addr.to_v4(), 0, olist,
ControllerPeerPath::kInvalidPeerIdentifier);
}
}
return;
}
pugi::xml_node items_node = pugi->FindNode("item");
if (!pugi->IsNull(items_node)) {
pugi->ReadNode("item"); //sets the context
std::string item_id = pugi->ReadAttrib("id");
if (!(agent_->mulitcast_builder()) || (bgp_peer_id() !=
agent_->mulitcast_builder()->bgp_peer_id())) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Ignore request from non multicast tree "
"builder peer; Multicast Delete Node:" + item_id);
return;
}
}
//Call Auto-generated Code to return struct
auto_ptr<AutogenProperty> xparser(new AutogenProperty());
if (McastItemsType::XmlParseProperty(node, &xparser) == false) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Xml Parsing for Multicast Message Failed");
return;
}
McastItemsType *items;
McastItemType *item;
items = (static_cast<McastItemsType *>(xparser.get()));
std::vector<McastItemType>::iterator items_iter;
boost::system::error_code ec;
for (items_iter = items->item.begin(); items_iter != items->item.end();
items_iter++) {
item = &*items_iter;
IpAddress g_addr =
IpAddress::from_string(item->entry.nlri.group, ec);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing multicast group address");
return;
}
IpAddress s_addr =
IpAddress::from_string(item->entry.nlri.source, ec);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing multicast source address");
return;
}
std::vector<McastNextHopType>::iterator iter;
for (iter = item->entry.olist.next_hop.begin();
iter != item->entry.olist.next_hop.end(); iter++) {
McastNextHopType nh = *iter;
IpAddress addr = IpAddress::from_string(nh.address, ec);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing next-hop address");
return;
}
int label;
stringstream nh_label(nh.label);
nh_label >> label;
TunnelType::TypeBmap encap =
GetMcastTypeBitmap(nh.tunnel_encapsulation_list);
olist.push_back(OlistTunnelEntry(nil_uuid(), label,
addr.to_v4(), encap));
}
agent_->oper_db()->multicast()->ModifyFabricMembers(
agent_->multicast_tree_builder_peer(),
vrf, g_addr.to_v4(), s_addr.to_v4(),
item->entry.nlri.source_label, olist,
agent_->controller()->multicast_sequence_number());
}
}
void AgentXmppChannel::ReceiveV4V6Update(XmlPugi *pugi) {
pugi::xml_node node = pugi->FindNode("items");
pugi::xml_attribute attr = node.attribute("node");
const char *af = NULL;
char *saveptr;
af = strtok_r(const_cast<char *>(attr.value()), "/", &saveptr);
strtok_r(NULL, "/", &saveptr);
char *vrf_name = strtok_r(NULL, "", &saveptr);
VrfKey vrf_key(vrf_name);
VrfEntry *vrf =
static_cast<VrfEntry *>(agent_->vrf_table()->
FindActiveEntry(&vrf_key));
if (!vrf) {
CONTROLLER_INFO_TRACE (Trace, GetBgpPeerName(), vrf_name,
"VRF not found");
return;
}
InetUnicastAgentRouteTable *rt_table = NULL;
if (atoi(af) == BgpAf::IPv4) {
rt_table = vrf->GetInet4UnicastRouteTable();
} else if (atoi(af) == BgpAf::IPv6) {
rt_table = vrf->GetInet6UnicastRouteTable();
}
if (!rt_table) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"VRF not found");
return;
}
if (!pugi->IsNull(node)) {
pugi::xml_node node_check = pugi->FindNode("retract");
if (!pugi->IsNull(node_check)) {
for (node = node.first_child(); node; node = node.next_sibling()) {
if (strcmp(node.name(), "retract") == 0) {
std::string id = node.first_attribute().value();
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Delete Node id:" + id);
boost::system::error_code ec;
int prefix_len;
if (atoi(af) == BgpAf::IPv4) {
Ip4Address prefix_addr;
ec = Ip4PrefixParse(id, &prefix_addr, &prefix_len);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing v4 prefix for delete");
return;
}
rt_table->DeleteReq(bgp_peer_id(), vrf_name,
prefix_addr, prefix_len,
new ControllerVmRoute(bgp_peer_id()));
} else if (atoi(af) == BgpAf::IPv6) {
Ip6Address prefix_addr;
ec = Inet6PrefixParse(id, &prefix_addr, &prefix_len);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing v6 prefix for delete");
return;
}
rt_table->DeleteReq(bgp_peer_id(), vrf_name,
prefix_addr, prefix_len,
new ControllerVmRoute(bgp_peer_id()));
}
}
}
return;
}
//Call Auto-generated Code to return struct
auto_ptr<AutogenProperty> xparser(new AutogenProperty());
if (ItemsType::XmlParseProperty(node, &xparser) == false) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Xml Parsing Failed");
return;
}
ItemsType *items;
ItemType *item;
items = (static_cast<ItemsType *>(xparser.get()));
for (vector<ItemType>::iterator iter =items->item.begin();
iter != items->item.end();
++iter) {
item = &*iter;
boost::system::error_code ec;
int prefix_len;
if (atoi(af) == BgpAf::IPv4) {
Ip4Address prefix_addr;
ec = Ip4PrefixParse(item->entry.nlri.address, &prefix_addr,
&prefix_len);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing v4 route address");
return;
}
AddRoute(vrf_name, prefix_addr, prefix_len, item);
} else if (atoi(af) == BgpAf::IPv6) {
Ip6Address prefix_addr;
ec = Inet6PrefixParse(item->entry.nlri.address, &prefix_addr,
&prefix_len);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing v6 route address");
return;
}
AddRoute(vrf_name, prefix_addr, prefix_len, item);
} else {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error updating route, Unknown IP family");
}
}
}
}
void AgentXmppChannel::AddEcmpRoute(string vrf_name, Ip4Address prefix_addr,
uint32_t prefix_len, ItemType *item) {
PathPreference::Preference preference = PathPreference::LOW;
TunnelType::TypeBmap encap = TunnelType::MplsType(); //default
if (item->entry.local_preference == PathPreference::HIGH) {
preference = PathPreference::HIGH;
}
PathPreference rp(item->entry.sequence_number, preference, false, false);
InetUnicastAgentRouteTable *rt_table =
agent_->vrf_table()->GetInet4UnicastRouteTable(vrf_name);
ComponentNHKeyList comp_nh_list;
for (uint32_t i = 0; i < item->entry.next_hops.next_hop.size(); i++) {
std::string nexthop_addr =
item->entry.next_hops.next_hop[i].address;
boost::system::error_code ec;
IpAddress addr = IpAddress::from_string(nexthop_addr, ec);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing nexthop ip address");
continue;
}
uint32_t label = item->entry.next_hops.next_hop[i].label;
if (agent_->router_id() == addr.to_v4()) {
//Get local list of interface and append to the list
MplsLabel *mpls =
agent_->mpls_table()->FindMplsLabel(label);
if (mpls != NULL) {
if (mpls->nexthop()->GetType() == NextHop::VRF) {
BgpPeer *bgp_peer = bgp_peer_id();
ClonedLocalPath *data =
new ClonedLocalPath(unicast_sequence_number(), this,
label, item->entry.virtual_network,
item->entry.security_group_list.security_group);
rt_table->AddClonedLocalPathReq(bgp_peer, vrf_name,
prefix_addr,
prefix_len, data);
return;
}
DBEntryBase::KeyPtr key = mpls->nexthop()->GetDBRequestKey();
NextHopKey *nh_key = static_cast<NextHopKey *>(key.release());
if (nh_key->GetType() != NextHop::COMPOSITE) {
//By default all component members of composite NH
//will be policy disabled, except for component NH
//of type composite
nh_key->SetPolicy(false);
}
std::auto_ptr<const NextHopKey> nh_key_ptr(nh_key);
ComponentNHKeyPtr component_nh_key(new ComponentNHKey(label,
nh_key_ptr));
comp_nh_list.push_back(component_nh_key);
}
} else {
encap = GetTypeBitmap
(item->entry.next_hops.next_hop[i].tunnel_encapsulation_list);
TunnelNHKey *nh_key = new TunnelNHKey(agent_->fabric_vrf_name(),
agent_->router_id(),
addr.to_v4(), false,
TunnelType::ComputeType(encap));
std::auto_ptr<const NextHopKey> nh_key_ptr(nh_key);
ComponentNHKeyPtr component_nh_key(new ComponentNHKey(label,
nh_key_ptr));
comp_nh_list.push_back(component_nh_key);
}
}
// Build the NH request and then create route data to be passed
DBRequest nh_req(DBRequest::DB_ENTRY_ADD_CHANGE);
nh_req.key.reset(new CompositeNHKey(Composite::ECMP, true,
comp_nh_list, vrf_name));
nh_req.data.reset(new CompositeNHData());
ControllerEcmpRoute *data =
new ControllerEcmpRoute(bgp_peer_id(), prefix_addr, prefix_len,
item->entry.virtual_network, -1,
false, vrf_name,
item->entry.security_group_list.security_group,
rp, encap, nh_req);
//ECMP create component NH
rt_table->AddRemoteVmRouteReq(bgp_peer_id(), vrf_name,
prefix_addr, prefix_len, data);
}
static bool FillEvpnOlist(EnetOlistType &olist, TunnelOlist *tunnel_olist) {
for (uint32_t i = 0; i < olist.next_hop.size(); i++) {
boost::system::error_code ec;
IpAddress addr =
IpAddress::from_string(olist.next_hop[i].address,
ec);
if (ec.value() != 0) {
return false;
}
int label = olist.next_hop[i].label;
TunnelType::TypeBmap encap =
GetEnetTypeBitmap(olist.next_hop[i].tunnel_encapsulation_list);
tunnel_olist->push_back(OlistTunnelEntry(nil_uuid(), label,
addr.to_v4(), encap));
}
return true;
}
void AgentXmppChannel::AddMulticastEvpnRoute(const string &vrf_name,
const MacAddress &mac,
EnetItemType *item) {
//Traverse Leaf Olist
TunnelOlist leaf_olist;
TunnelOlist olist;
//Fill leaf olist and olist
//TODO can check for item->entry.assisted_replication_supported
//and then populate leaf_olist
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), "Composite",
"add leaf evpn multicast route");
if (FillEvpnOlist(item->entry.leaf_olist, &leaf_olist) == false) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing next-hop address");
return;
}
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), "Composite",
"add evpn multicast route");
if (FillEvpnOlist(item->entry.olist, &olist) == false) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing next-hop address");
return;
}
agent_->oper_db()->multicast()->
ModifyTorMembers(bgp_peer_id(), vrf_name, leaf_olist,
item->entry.nlri.ethernet_tag,
agent_->controller()->
multicast_sequence_number());
agent_->oper_db()->multicast()->
ModifyEvpnMembers(bgp_peer_id(), vrf_name, olist,
item->entry.nlri.ethernet_tag,
agent_->controller()->
multicast_sequence_number());
}
void AgentXmppChannel::AddEvpnRoute(const std::string &vrf_name,
std::string mac_str,
EnetItemType *item) {
// Validate VRF first
EvpnAgentRouteTable *rt_table =
static_cast<EvpnAgentRouteTable *>
(agent_->vrf_table()->GetEvpnRouteTable(vrf_name));
if (rt_table == NULL) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Invalid VRF. Ignoring route");
return;
}
boost::system::error_code ec;
MacAddress mac(mac_str);
if (mac == MacAddress::BroadcastMac()) {
AddMulticastEvpnRoute(vrf_name, mac, item);
return;
}
int n = -1;
IpAddress nh_ip;
// if list contains more than one nexthop, pick the lowest IP for
// active nexthop of ecmp
for (uint32_t i = 0; i < item->entry.next_hops.next_hop.size(); i++) {
string nexthop_addr = item->entry.next_hops.next_hop[i].address;
IpAddress temp_nh_ip = IpAddress::from_string(nexthop_addr, ec);
if (ec.value() != 0) {
continue;
}
if (n == -1 || temp_nh_ip < nh_ip) {
n = i;
nh_ip = temp_nh_ip;
}
}
if (n == -1) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing nexthop ip address");
return;
}
uint32_t label = item->entry.next_hops.next_hop[n].label;
TunnelType::TypeBmap encap = GetEnetTypeBitmap
(item->entry.next_hops.next_hop[n].tunnel_encapsulation_list);
PathPreference::Preference preference = PathPreference::LOW;
if (item->entry.local_preference == PathPreference::HIGH) {
preference = PathPreference::HIGH;
} else if (item->entry.local_preference == PathPreference::HA_STALE) {
preference = PathPreference::HA_STALE;
}
PathPreference path_preference(item->entry.sequence_number, preference,
false, false);
IpAddress ip_addr;
if (ParseAddress(item->entry.nlri.address, &ip_addr) < 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing address : " + item->entry.nlri.address);
return;
}
string nexthop_addr = item->entry.next_hops.next_hop[n].address;
CONTROLLER_INFO_TRACE(RouteImport, GetBgpPeerName(), vrf_name,
mac.ToString(), 0, nexthop_addr, label, "");
if (agent_->router_id() != nh_ip.to_v4()) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), nexthop_addr,
"add remote evpn route");
// for number of nexthops more than 1, carry flag ecmp suppressed
// to indicate the same to all modules, till we handle L2 ecmp
ControllerVmRoute *data =
ControllerVmRoute::MakeControllerVmRoute(bgp_peer_id(),
agent_->fabric_vrf_name(),
agent_->router_id(),
vrf_name, nh_ip.to_v4(),
encap, label,
item->entry.virtual_network,
item->entry.security_group_list.security_group,
path_preference,
(item->entry.next_hops.next_hop.size() > 1));
rt_table->AddRemoteVmRouteReq(bgp_peer_id(), vrf_name, mac, ip_addr,
item->entry.nlri.ethernet_tag, data);
return;
}
// Route originated by us and reflected back by control-node
// When encap is MPLS based, the nexthop can be found by label lookup
// When encapsulation used is VXLAN, nexthop cannot be found from message
// To have common design, get nexthop from the route already present
VrfEntry *vrf =
agent_->vrf_table()->FindVrfFromName(vrf_name);
if (vrf == NULL) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"vrf not found, ignoring request");
return;
}
EvpnRouteKey key(agent_->local_vm_peer(), vrf_name, mac,
ip_addr, item->entry.nlri.ethernet_tag);
EvpnRouteEntry *route = static_cast<EvpnRouteEntry *>
(rt_table->FindActiveEntry(&key));
if (route == NULL) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"route not found, ignoring request");
return;
}
AgentPath *local_path = route->FindLocalVmPortPath();
const NextHop *nh = local_path ? local_path->nexthop() : NULL;
if (nh == NULL) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"nexthop not found, ignoring request");
return;
}
// We expect only INTERFACE nexthop for evpn routes
const InterfaceNH *intf_nh = dynamic_cast<const InterfaceNH *>(nh);
if (nh->GetType() != NextHop::INTERFACE) {
CONTROLLER_INFO_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Invalid nexthop in evpn route");
return;
}
//In EVPN, if interface IP is not same as IP received in Evpn route
//then use receive NH. This is done because this received evpn ip is
//a floating IP associated with VM and it shoul be routed.
const VmInterface *vm_intf =
dynamic_cast<const VmInterface *>(intf_nh->
GetInterface());
if (vm_intf) {
if (vm_intf->IsFloatingIp(ip_addr)) {
rt_table->AddReceiveRouteReq(bgp_peer_id(), vrf_name,
label, mac, ip_addr,
item->entry.nlri.ethernet_tag,
item->entry.virtual_network);
return;
}
}
SecurityGroupList sg_list = item->entry.security_group_list.security_group;
VmInterfaceKey intf_key(AgentKey::ADD_DEL_CHANGE, intf_nh->GetIfUuid(), "");
ControllerLocalVmRoute *local_vm_route = NULL;
if (encap == TunnelType::VxlanType()) {
local_vm_route =
new ControllerLocalVmRoute(intf_key,
MplsTable::kInvalidLabel,
label, false,
item->entry.virtual_network,
InterfaceNHFlags::BRIDGE,
sg_list, path_preference,
unicast_sequence_number(),
this);
} else {
local_vm_route =
new ControllerLocalVmRoute(intf_key,
label,
VxLanTable::kInvalidvxlan_id,
false,
item->entry.virtual_network,
InterfaceNHFlags::BRIDGE,
sg_list, path_preference,
unicast_sequence_number(),
this);
}
rt_table->AddLocalVmRouteReq(bgp_peer_id(), vrf_name, mac,
ip_addr, item->entry.nlri.ethernet_tag,
static_cast<LocalVmRoute *>(local_vm_route));
}
void AgentXmppChannel::AddRemoteRoute(string vrf_name, IpAddress prefix_addr,
uint32_t prefix_len, ItemType *item) {
InetUnicastAgentRouteTable *rt_table = NULL;
if (prefix_addr.is_v4()) {
rt_table = agent_->vrf_table()->GetInet4UnicastRouteTable(vrf_name);
} else if (prefix_addr.is_v6()) {
rt_table = agent_->vrf_table()->GetInet6UnicastRouteTable(vrf_name);
}
if (rt_table == NULL) {
return;
}
boost::system::error_code ec;
string nexthop_addr = item->entry.next_hops.next_hop[0].address;
uint32_t label = item->entry.next_hops.next_hop[0].label;
IpAddress addr = IpAddress::from_string(nexthop_addr, ec);
TunnelType::TypeBmap encap = GetTypeBitmap
(item->entry.next_hops.next_hop[0].tunnel_encapsulation_list);
if (ec.value() != 0) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"Error parsing nexthop ip address");
return;
}
PathPreference::Preference preference = PathPreference::LOW;
if (item->entry.local_preference == PathPreference::HIGH) {
preference = PathPreference::HIGH;
}
PathPreference path_preference(item->entry.sequence_number, preference,
false, false);
CONTROLLER_INFO_TRACE(RouteImport, GetBgpPeerName(), vrf_name,
prefix_addr.to_string(), prefix_len,
addr.to_v4().to_string(), label,
item->entry.virtual_network);
if (agent_->router_id() != addr.to_v4()) {
ControllerVmRoute *data =
ControllerVmRoute::MakeControllerVmRoute(bgp_peer_id(),
agent_->fabric_vrf_name(), agent_->router_id(),
vrf_name, addr.to_v4(), encap, label,
item->entry.virtual_network ,
item->entry.security_group_list.security_group,
path_preference, false);
rt_table->AddRemoteVmRouteReq(bgp_peer_id(), vrf_name, prefix_addr,
prefix_len, data);
return;
}
MplsLabel *mpls = agent_->mpls_table()->FindMplsLabel(label);
if (mpls != NULL) {
const NextHop *nh = mpls->nexthop();
switch(nh->GetType()) {
case NextHop::INTERFACE: {
const InterfaceNH *intf_nh = static_cast<const InterfaceNH *>(nh);
const Interface *interface = intf_nh->GetInterface();
if (interface == NULL) {
break;
}
VmInterfaceKey intf_key(AgentKey::ADD_DEL_CHANGE,
intf_nh->GetIfUuid(), "");
BgpPeer *bgp_peer = bgp_peer_id();
if (interface->type() == Interface::VM_INTERFACE) {
ControllerLocalVmRoute *local_vm_route =
new ControllerLocalVmRoute(intf_key, label,
VxLanTable::kInvalidvxlan_id, false,
item->entry.virtual_network,
InterfaceNHFlags::INET4,
item->entry.security_group_list.security_group,
path_preference,
unicast_sequence_number(),
this);
rt_table->AddLocalVmRouteReq(bgp_peer, vrf_name,
prefix_addr, prefix_len,
static_cast<LocalVmRoute *>(local_vm_route));
} else if (interface->type() == Interface::INET) {
if (!prefix_addr.is_v4()) {
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"MPLS label inet interface type not supported for non IPv4");
return;
}
InetInterfaceKey intf_key(interface->name());
ControllerInetInterfaceRoute *inet_interface_route =
new ControllerInetInterfaceRoute(intf_key, label,
TunnelType::GREType(),
item->entry.virtual_network,
unicast_sequence_number(),
this);
rt_table->AddInetInterfaceRouteReq(bgp_peer, vrf_name,
prefix_addr.to_v4(), prefix_len,
inet_interface_route);
} else {
// Unsupported scenario
CONTROLLER_TRACE(Trace, GetBgpPeerName(), vrf_name,
"MPLS label points to invalid interface type");