5 from socket import AF_INET6
7 from framework import VppTestCase, VppTestRunner
8 from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
9 from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
10 SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
12 from scapy.packet import Raw
13 from scapy.layers.l2 import Ether, Dot1Q
14 from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
15 from scapy.layers.inet import IP, UDP
17 from scapy.utils import inet_pton, inet_ntop
22 class TestSRv6(VppTestCase):
23 """ SRv6 Test Case """
27 super(TestSRv6, self).setUpClass()
30 """ Perform test setup before each test case.
32 super(TestSRv6, self).setUp()
34 # packet sizes, inclusive L2 overhead
35 self.pg_packet_sizes = [64, 512, 1518, 9018]
38 self.reset_packet_infos()
41 """ Clean up test setup after each test case.
43 self.teardown_interfaces()
45 super(TestSRv6, self).tearDown()
47 def configure_interface(self,
49 ipv6=False, ipv4=False,
50 ipv6_table_id=0, ipv4_table_id=0):
51 """ Configure interface.
52 :param ipv6: configure IPv6 on interface
53 :param ipv4: configure IPv4 on interface
54 :param ipv6_table_id: FIB table_id for IPv6
55 :param ipv4_table_id: FIB table_id for IPv4
57 self.logger.debug("Configuring interface %s" % (interface.name))
59 self.logger.debug("Configuring IPv6")
60 interface.set_table_ip6(ipv6_table_id)
61 interface.config_ip6()
62 interface.resolve_ndp(timeout=5)
64 self.logger.debug("Configuring IPv4")
65 interface.set_table_ip4(ipv4_table_id)
66 interface.config_ip4()
67 interface.resolve_arp()
70 def setup_interfaces(self, ipv6=[], ipv4=[],
71 ipv6_table_id=[], ipv4_table_id=[]):
72 """ Create and configure interfaces.
74 :param ipv6: list of interface IPv6 capabilities
75 :param ipv4: list of interface IPv4 capabilities
76 :param ipv6_table_id: list of intf IPv6 FIB table_ids
77 :param ipv4_table_id: list of intf IPv4 FIB table_ids
78 :returns: List of created interfaces.
80 # how many interfaces?
85 self.logger.debug("Creating and configuring %d interfaces" % (count))
87 # fill up ipv6 and ipv4 lists if needed
88 # not enabled (False) is the default
90 ipv6 += (count - len(ipv6)) * [False]
92 ipv4 += (count - len(ipv4)) * [False]
94 # fill up table_id lists if needed
95 # table_id 0 (global) is the default
96 if len(ipv6_table_id) < count:
97 ipv6_table_id += (count - len(ipv6_table_id)) * [0]
98 if len(ipv4_table_id) < count:
99 ipv4_table_id += (count - len(ipv4_table_id)) * [0]
101 # create 'count' pg interfaces
102 self.create_pg_interfaces(range(count))
104 # setup all interfaces
105 for i in range(count):
106 intf = self.pg_interfaces[i]
107 self.configure_interface(intf,
109 ipv6_table_id[i], ipv4_table_id[i])
112 self.logger.debug(self.vapi.cli("show ip6 neighbors"))
114 self.logger.debug(self.vapi.cli("show ip arp"))
115 self.logger.debug(self.vapi.cli("show interface"))
116 self.logger.debug(self.vapi.cli("show hardware"))
118 return self.pg_interfaces
120 def teardown_interfaces(self):
121 """ Unconfigure and bring down interface.
123 self.logger.debug("Tearing down interfaces")
124 # tear down all interfaces
125 # AFAIK they cannot be deleted
126 for i in self.pg_interfaces:
127 self.logger.debug("Tear down interface %s" % (i.name))
131 @unittest.skipUnless(0, "PC to fix")
132 def test_SRv6_T_Encaps(self):
133 """ Test SRv6 Transit.Encaps behavior for IPv6.
135 # send traffic to one destination interface
136 # source and destination are IPv6 only
137 self.setup_interfaces(ipv6=[True, True])
139 # configure FIB entries
140 route = VppIpRoute(self, "a4::", 64,
141 [VppRoutePath(self.pg1.remote_ip6,
142 self.pg1.sw_if_index,
143 proto=DpoProto.DPO_PROTO_IP6)],
145 route.add_vpp_config()
147 # configure encaps IPv6 source address
148 # needs to be done before SR Policy config
150 self.vapi.cli("set sr encaps source addr a3::")
153 # configure SRv6 Policy
154 # Note: segment list order: first -> last
155 sr_policy = VppSRv6Policy(
158 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
159 weight=1, fib_table=0,
160 segments=['a4::', 'a5::', 'a6::c7'],
162 sr_policy.add_vpp_config()
163 self.sr_policy = sr_policy
165 # log the sr policies
166 self.logger.info(self.vapi.cli("show sr policies"))
168 # steer IPv6 traffic to a7::/64 into SRv6 Policy
169 # use the bsid of the above self.sr_policy
170 pol_steering = VppSRv6Steering(
172 bsid=self.sr_policy.bsid,
173 prefix="a7::", mask_width=64,
174 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
175 sr_policy_index=0, table_id=0,
177 pol_steering.add_vpp_config()
179 # log the sr steering policies
180 self.logger.info(self.vapi.cli("show sr steering policies"))
183 count = len(self.pg_packet_sizes)
184 dst_inner = 'a7::1234'
187 # create IPv6 packets without SRH
188 packet_header = self.create_packet_header_IPv6(dst_inner)
189 # create traffic stream pg0->pg1
190 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
191 self.pg_packet_sizes, count))
193 # create IPv6 packets with SRH
194 # packets with segments-left 1, active segment a7::
195 packet_header = self.create_packet_header_IPv6_SRH(
196 sidlist=['a8::', 'a7::', 'a6::'],
198 # create traffic stream pg0->pg1
199 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
200 self.pg_packet_sizes, count))
202 # create IPv6 packets with SRH and IPv6
203 # packets with segments-left 1, active segment a7::
204 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
206 sidlist=['a8::', 'a7::', 'a6::'],
208 # create traffic stream pg0->pg1
209 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
210 self.pg_packet_sizes, count))
212 # send packets and verify received packets
213 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
214 self.compare_rx_tx_packet_T_Encaps)
216 # log the localsid counters
217 self.logger.info(self.vapi.cli("show sr localsid"))
220 pol_steering.remove_vpp_config()
221 self.logger.info(self.vapi.cli("show sr steering policies"))
224 self.sr_policy.remove_vpp_config()
225 self.logger.info(self.vapi.cli("show sr policies"))
231 self.teardown_interfaces()
233 @unittest.skipUnless(0, "PC to fix")
234 def test_SRv6_T_Insert(self):
235 """ Test SRv6 Transit.Insert behavior (IPv6 only).
237 # send traffic to one destination interface
238 # source and destination are IPv6 only
239 self.setup_interfaces(ipv6=[True, True])
241 # configure FIB entries
242 route = VppIpRoute(self, "a4::", 64,
243 [VppRoutePath(self.pg1.remote_ip6,
244 self.pg1.sw_if_index,
245 proto=DpoProto.DPO_PROTO_IP6)],
247 route.add_vpp_config()
249 # configure encaps IPv6 source address
250 # needs to be done before SR Policy config
252 self.vapi.cli("set sr encaps source addr a3::")
255 # configure SRv6 Policy
256 # Note: segment list order: first -> last
257 sr_policy = VppSRv6Policy(
260 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
261 weight=1, fib_table=0,
262 segments=['a4::', 'a5::', 'a6::c7'],
264 sr_policy.add_vpp_config()
265 self.sr_policy = sr_policy
267 # log the sr policies
268 self.logger.info(self.vapi.cli("show sr policies"))
270 # steer IPv6 traffic to a7::/64 into SRv6 Policy
271 # use the bsid of the above self.sr_policy
272 pol_steering = VppSRv6Steering(
274 bsid=self.sr_policy.bsid,
275 prefix="a7::", mask_width=64,
276 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
277 sr_policy_index=0, table_id=0,
279 pol_steering.add_vpp_config()
281 # log the sr steering policies
282 self.logger.info(self.vapi.cli("show sr steering policies"))
285 count = len(self.pg_packet_sizes)
286 dst_inner = 'a7::1234'
289 # create IPv6 packets without SRH
290 packet_header = self.create_packet_header_IPv6(dst_inner)
291 # create traffic stream pg0->pg1
292 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
293 self.pg_packet_sizes, count))
295 # create IPv6 packets with SRH
296 # packets with segments-left 1, active segment a7::
297 packet_header = self.create_packet_header_IPv6_SRH(
298 sidlist=['a8::', 'a7::', 'a6::'],
300 # create traffic stream pg0->pg1
301 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
302 self.pg_packet_sizes, count))
304 # send packets and verify received packets
305 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
306 self.compare_rx_tx_packet_T_Insert)
308 # log the localsid counters
309 self.logger.info(self.vapi.cli("show sr localsid"))
312 pol_steering.remove_vpp_config()
313 self.logger.info(self.vapi.cli("show sr steering policies"))
316 self.sr_policy.remove_vpp_config()
317 self.logger.info(self.vapi.cli("show sr policies"))
323 self.teardown_interfaces()
325 @unittest.skipUnless(0, "PC to fix")
326 def test_SRv6_T_Encaps_IPv4(self):
327 """ Test SRv6 Transit.Encaps behavior for IPv4.
329 # send traffic to one destination interface
330 # source interface is IPv4 only
331 # destination interface is IPv6 only
332 self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
334 # configure FIB entries
335 route = VppIpRoute(self, "a4::", 64,
336 [VppRoutePath(self.pg1.remote_ip6,
337 self.pg1.sw_if_index,
338 proto=DpoProto.DPO_PROTO_IP6)],
340 route.add_vpp_config()
342 # configure encaps IPv6 source address
343 # needs to be done before SR Policy config
345 self.vapi.cli("set sr encaps source addr a3::")
348 # configure SRv6 Policy
349 # Note: segment list order: first -> last
350 sr_policy = VppSRv6Policy(
353 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
354 weight=1, fib_table=0,
355 segments=['a4::', 'a5::', 'a6::c7'],
357 sr_policy.add_vpp_config()
358 self.sr_policy = sr_policy
360 # log the sr policies
361 self.logger.info(self.vapi.cli("show sr policies"))
363 # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
364 # use the bsid of the above self.sr_policy
365 pol_steering = VppSRv6Steering(
367 bsid=self.sr_policy.bsid,
368 prefix="7.1.1.0", mask_width=24,
369 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
370 sr_policy_index=0, table_id=0,
372 pol_steering.add_vpp_config()
374 # log the sr steering policies
375 self.logger.info(self.vapi.cli("show sr steering policies"))
378 count = len(self.pg_packet_sizes)
379 dst_inner = '7.1.1.123'
382 # create IPv4 packets
383 packet_header = self.create_packet_header_IPv4(dst_inner)
384 # create traffic stream pg0->pg1
385 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
386 self.pg_packet_sizes, count))
388 # send packets and verify received packets
389 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
390 self.compare_rx_tx_packet_T_Encaps_IPv4)
392 # log the localsid counters
393 self.logger.info(self.vapi.cli("show sr localsid"))
396 pol_steering.remove_vpp_config()
397 self.logger.info(self.vapi.cli("show sr steering policies"))
400 self.sr_policy.remove_vpp_config()
401 self.logger.info(self.vapi.cli("show sr policies"))
407 self.teardown_interfaces()
409 @unittest.skip("VPP crashes after running this test")
410 def test_SRv6_T_Encaps_L2(self):
411 """ Test SRv6 Transit.Encaps behavior for L2.
413 # send traffic to one destination interface
414 # source interface is IPv4 only TODO?
415 # destination interface is IPv6 only
416 self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
418 # configure FIB entries
419 route = VppIpRoute(self, "a4::", 64,
420 [VppRoutePath(self.pg1.remote_ip6,
421 self.pg1.sw_if_index,
422 proto=DpoProto.DPO_PROTO_IP6)],
424 route.add_vpp_config()
426 # configure encaps IPv6 source address
427 # needs to be done before SR Policy config
429 self.vapi.cli("set sr encaps source addr a3::")
432 # configure SRv6 Policy
433 # Note: segment list order: first -> last
434 sr_policy = VppSRv6Policy(
437 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
438 weight=1, fib_table=0,
439 segments=['a4::', 'a5::', 'a6::c7'],
441 sr_policy.add_vpp_config()
442 self.sr_policy = sr_policy
444 # log the sr policies
445 self.logger.info(self.vapi.cli("show sr policies"))
447 # steer L2 traffic into SRv6 Policy
448 # use the bsid of the above self.sr_policy
449 pol_steering = VppSRv6Steering(
451 bsid=self.sr_policy.bsid,
452 prefix="::", mask_width=0,
453 traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
454 sr_policy_index=0, table_id=0,
455 sw_if_index=self.pg0.sw_if_index)
456 pol_steering.add_vpp_config()
458 # log the sr steering policies
459 self.logger.info(self.vapi.cli("show sr steering policies"))
462 count = len(self.pg_packet_sizes)
465 # create L2 packets without dot1q header
466 packet_header = self.create_packet_header_L2()
467 # create traffic stream pg0->pg1
468 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
469 self.pg_packet_sizes, count))
471 # create L2 packets with dot1q header
472 packet_header = self.create_packet_header_L2(vlan=123)
473 # create traffic stream pg0->pg1
474 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
475 self.pg_packet_sizes, count))
477 # send packets and verify received packets
478 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
479 self.compare_rx_tx_packet_T_Encaps_L2)
481 # log the localsid counters
482 self.logger.info(self.vapi.cli("show sr localsid"))
485 pol_steering.remove_vpp_config()
486 self.logger.info(self.vapi.cli("show sr steering policies"))
489 self.sr_policy.remove_vpp_config()
490 self.logger.info(self.vapi.cli("show sr policies"))
496 self.teardown_interfaces()
498 def test_SRv6_End(self):
499 """ Test SRv6 End (without PSP) behavior.
501 # send traffic to one destination interface
502 # source and destination interfaces are IPv6 only
503 self.setup_interfaces(ipv6=[True, True])
505 # configure FIB entries
506 route = VppIpRoute(self, "a4::", 64,
507 [VppRoutePath(self.pg1.remote_ip6,
508 self.pg1.sw_if_index,
509 proto=DpoProto.DPO_PROTO_IP6)],
511 route.add_vpp_config()
513 # configure SRv6 localSID End without PSP behavior
514 localsid = VppSRv6LocalSID(
515 self, localsid_addr='A3::0',
516 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
522 localsid.add_vpp_config()
524 self.logger.debug(self.vapi.cli("show sr localsid"))
526 # create IPv6 packets with SRH (SL=2, SL=1, SL=0)
527 # send one packet per SL value per packet size
528 # SL=0 packet with localSID End with USP needs 2nd SRH
529 count = len(self.pg_packet_sizes)
530 dst_inner = 'a4::1234'
533 # packets with segments-left 2, active segment a3::
534 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
536 sidlist=['a5::', 'a4::', 'a3::'],
538 # create traffic stream pg0->pg1
539 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
540 self.pg_packet_sizes, count))
542 # packets with segments-left 1, active segment a3::
543 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
545 sidlist=['a4::', 'a3::', 'a2::'],
547 # add to traffic stream pg0->pg1
548 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
549 self.pg_packet_sizes, count))
551 # TODO: test behavior with SL=0 packet (needs 2*SRH?)
553 # send packets and verify received packets
554 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
555 self.compare_rx_tx_packet_End)
557 # log the localsid counters
558 self.logger.info(self.vapi.cli("show sr localsid"))
560 # remove SRv6 localSIDs
561 localsid.remove_vpp_config()
567 self.teardown_interfaces()
569 def test_SRv6_End_with_PSP(self):
570 """ Test SRv6 End with PSP behavior.
572 # send traffic to one destination interface
573 # source and destination interfaces are IPv6 only
574 self.setup_interfaces(ipv6=[True, True])
576 # configure FIB entries
577 route = VppIpRoute(self, "a4::", 64,
578 [VppRoutePath(self.pg1.remote_ip6,
579 self.pg1.sw_if_index,
580 proto=DpoProto.DPO_PROTO_IP6)],
582 route.add_vpp_config()
584 # configure SRv6 localSID End with PSP behavior
585 localsid = VppSRv6LocalSID(
586 self, localsid_addr='A3::0',
587 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
593 localsid.add_vpp_config()
595 self.logger.debug(self.vapi.cli("show sr localsid"))
597 # create IPv6 packets with SRH (SL=2, SL=1)
598 # send one packet per SL value per packet size
599 # SL=0 packet with localSID End with PSP is dropped
600 count = len(self.pg_packet_sizes)
601 dst_inner = 'a4::1234'
604 # packets with segments-left 2, active segment a3::
605 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
607 sidlist=['a5::', 'a4::', 'a3::'],
609 # create traffic stream pg0->pg1
610 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
611 self.pg_packet_sizes, count))
613 # packets with segments-left 1, active segment a3::
614 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
616 sidlist=['a4::', 'a3::', 'a2::'],
618 # add to traffic stream pg0->pg1
619 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
620 self.pg_packet_sizes, count))
622 # send packets and verify received packets
623 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
624 self.compare_rx_tx_packet_End_PSP)
626 # log the localsid counters
627 self.logger.info(self.vapi.cli("show sr localsid"))
629 # remove SRv6 localSIDs
630 localsid.remove_vpp_config()
636 self.teardown_interfaces()
638 def test_SRv6_End_X(self):
639 """ Test SRv6 End.X (without PSP) behavior.
641 # create three interfaces (1 source, 2 destinations)
642 # source and destination interfaces are IPv6 only
643 self.setup_interfaces(ipv6=[True, True, True])
645 # configure FIB entries
646 # a4::/64 via pg1 and pg2
647 route = VppIpRoute(self, "a4::", 64,
648 [VppRoutePath(self.pg1.remote_ip6,
649 self.pg1.sw_if_index,
650 proto=DpoProto.DPO_PROTO_IP6),
651 VppRoutePath(self.pg2.remote_ip6,
652 self.pg2.sw_if_index,
653 proto=DpoProto.DPO_PROTO_IP6)],
655 route.add_vpp_config()
656 self.logger.debug(self.vapi.cli("show ip6 fib"))
658 # configure SRv6 localSID End.X without PSP behavior
659 # End.X points to interface pg1
660 localsid = VppSRv6LocalSID(
661 self, localsid_addr='A3::C4',
662 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
663 nh_addr=self.pg1.remote_ip6,
665 sw_if_index=self.pg1.sw_if_index,
668 localsid.add_vpp_config()
670 self.logger.debug(self.vapi.cli("show sr localsid"))
672 # create IPv6 packets with SRH (SL=2, SL=1)
673 # send one packet per SL value per packet size
674 # SL=0 packet with localSID End with PSP is dropped
675 count = len(self.pg_packet_sizes)
676 dst_inner = 'a4::1234'
679 # packets with segments-left 2, active segment a3::c4
680 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
682 sidlist=['a5::', 'a4::', 'a3::c4'],
684 # create traffic stream pg0->pg1
685 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
686 self.pg_packet_sizes, count))
688 # packets with segments-left 1, active segment a3::c4
689 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
691 sidlist=['a4::', 'a3::c4', 'a2::'],
693 # add to traffic stream pg0->pg1
694 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
695 self.pg_packet_sizes, count))
697 # send packets and verify received packets
698 # using same comparison function as End (no PSP)
699 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
700 self.compare_rx_tx_packet_End)
702 # assert nothing was received on the other interface (pg2)
703 self.pg2.assert_nothing_captured("mis-directed packet(s)")
705 # log the localsid counters
706 self.logger.info(self.vapi.cli("show sr localsid"))
708 # remove SRv6 localSIDs
709 localsid.remove_vpp_config()
715 self.teardown_interfaces()
717 def test_SRv6_End_X_with_PSP(self):
718 """ Test SRv6 End.X with PSP behavior.
720 # create three interfaces (1 source, 2 destinations)
721 # source and destination interfaces are IPv6 only
722 self.setup_interfaces(ipv6=[True, True, True])
724 # configure FIB entries
725 # a4::/64 via pg1 and pg2
726 route = VppIpRoute(self, "a4::", 64,
727 [VppRoutePath(self.pg1.remote_ip6,
728 self.pg1.sw_if_index,
729 proto=DpoProto.DPO_PROTO_IP6),
730 VppRoutePath(self.pg2.remote_ip6,
731 self.pg2.sw_if_index,
732 proto=DpoProto.DPO_PROTO_IP6)],
734 route.add_vpp_config()
736 # configure SRv6 localSID End with PSP behavior
737 localsid = VppSRv6LocalSID(
738 self, localsid_addr='A3::C4',
739 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
740 nh_addr=self.pg1.remote_ip6,
742 sw_if_index=self.pg1.sw_if_index,
745 localsid.add_vpp_config()
747 self.logger.debug(self.vapi.cli("show sr localsid"))
749 # create IPv6 packets with SRH (SL=2, SL=1)
750 # send one packet per SL value per packet size
751 # SL=0 packet with localSID End with PSP is dropped
752 count = len(self.pg_packet_sizes)
753 dst_inner = 'a4::1234'
756 # packets with segments-left 2, active segment a3::
757 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
759 sidlist=['a5::', 'a4::', 'a3::c4'],
761 # create traffic stream pg0->pg1
762 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
763 self.pg_packet_sizes, count))
765 # packets with segments-left 1, active segment a3::
766 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
768 sidlist=['a4::', 'a3::c4', 'a2::'],
770 # add to traffic stream pg0->pg1
771 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
772 self.pg_packet_sizes, count))
774 # send packets and verify received packets
775 # using same comparison function as End with PSP
776 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
777 self.compare_rx_tx_packet_End_PSP)
779 # assert nothing was received on the other interface (pg2)
780 self.pg2.assert_nothing_captured("mis-directed packet(s)")
782 # log the localsid counters
783 self.logger.info(self.vapi.cli("show sr localsid"))
785 # remove SRv6 localSIDs
786 localsid.remove_vpp_config()
792 self.teardown_interfaces()
794 def test_SRv6_End_DX6(self):
795 """ Test SRv6 End.DX6 behavior.
797 # send traffic to one destination interface
798 # source and destination interfaces are IPv6 only
799 self.setup_interfaces(ipv6=[True, True])
801 # configure SRv6 localSID End.DX6 behavior
802 localsid = VppSRv6LocalSID(
803 self, localsid_addr='a3::c4',
804 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
805 nh_addr=self.pg1.remote_ip6,
807 sw_if_index=self.pg1.sw_if_index,
810 localsid.add_vpp_config()
812 self.logger.debug(self.vapi.cli("show sr localsid"))
814 # create IPv6 packets with SRH (SL=0)
815 # send one packet per packet size
816 count = len(self.pg_packet_sizes)
817 dst_inner = 'a4::1234' # inner header destination address
820 # packets with SRH, segments-left 0, active segment a3::c4
821 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
823 sidlist=['a3::c4', 'a2::', 'a1::'],
825 # add to traffic stream pg0->pg1
826 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
827 self.pg_packet_sizes, count))
829 # packets without SRH, IPv6 in IPv6
830 # outer IPv6 dest addr is the localsid End.DX6
831 packet_header = self.create_packet_header_IPv6_IPv6(
834 # add to traffic stream pg0->pg1
835 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
836 self.pg_packet_sizes, count))
838 # send packets and verify received packets
839 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
840 self.compare_rx_tx_packet_End_DX6)
842 # log the localsid counters
843 self.logger.info(self.vapi.cli("show sr localsid"))
845 # remove SRv6 localSIDs
846 localsid.remove_vpp_config()
849 self.teardown_interfaces()
851 def test_SRv6_End_DT6(self):
852 """ Test SRv6 End.DT6 behavior.
854 # create three interfaces (1 source, 2 destinations)
855 # all interfaces are IPv6 only
856 # source interface in global FIB (0)
857 # destination interfaces in global and vrf
859 self.setup_interfaces(ipv6=[True, True, True],
860 ipv6_table_id=[0, 0, vrf_1])
862 # configure FIB entries
863 # a4::/64 is reachable
864 # via pg1 in table 0 (global)
865 # and via pg2 in table vrf_1
866 route0 = VppIpRoute(self, "a4::", 64,
867 [VppRoutePath(self.pg1.remote_ip6,
868 self.pg1.sw_if_index,
869 proto=DpoProto.DPO_PROTO_IP6,
873 route0.add_vpp_config()
874 route1 = VppIpRoute(self, "a4::", 64,
875 [VppRoutePath(self.pg2.remote_ip6,
876 self.pg2.sw_if_index,
877 proto=DpoProto.DPO_PROTO_IP6,
881 route1.add_vpp_config()
882 self.logger.debug(self.vapi.cli("show ip6 fib"))
884 # configure SRv6 localSID End.DT6 behavior
886 # fib_table: where the localsid is installed
887 # sw_if_index: in T-variants of localsid this is the vrf table_id
888 localsid = VppSRv6LocalSID(
889 self, localsid_addr='a3::c4',
890 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
896 localsid.add_vpp_config()
898 self.logger.debug(self.vapi.cli("show sr localsid"))
900 # create IPv6 packets with SRH (SL=0)
901 # send one packet per packet size
902 count = len(self.pg_packet_sizes)
903 dst_inner = 'a4::1234' # inner header destination address
906 # packets with SRH, segments-left 0, active segment a3::c4
907 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
909 sidlist=['a3::c4', 'a2::', 'a1::'],
911 # add to traffic stream pg0->pg1
912 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
913 self.pg_packet_sizes, count))
915 # packets without SRH, IPv6 in IPv6
916 # outer IPv6 dest addr is the localsid End.DT6
917 packet_header = self.create_packet_header_IPv6_IPv6(
920 # add to traffic stream pg0->pg1
921 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
922 self.pg_packet_sizes, count))
924 # send packets and verify received packets
925 # using same comparison function as End.DX6
926 self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
927 self.compare_rx_tx_packet_End_DX6)
929 # assert nothing was received on the other interface (pg2)
930 self.pg1.assert_nothing_captured("mis-directed packet(s)")
932 # log the localsid counters
933 self.logger.info(self.vapi.cli("show sr localsid"))
935 # remove SRv6 localSIDs
936 localsid.remove_vpp_config()
942 self.teardown_interfaces()
944 def test_SRv6_End_DX4(self):
945 """ Test SRv6 End.DX4 behavior.
947 # send traffic to one destination interface
948 # source interface is IPv6 only
949 # destination interface is IPv4 only
950 self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
952 # configure SRv6 localSID End.DX4 behavior
953 localsid = VppSRv6LocalSID(
954 self, localsid_addr='a3::c4',
955 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
956 nh_addr=self.pg1.remote_ip4,
958 sw_if_index=self.pg1.sw_if_index,
961 localsid.add_vpp_config()
963 self.logger.debug(self.vapi.cli("show sr localsid"))
965 # send one packet per packet size
966 count = len(self.pg_packet_sizes)
967 dst_inner = '4.1.1.123' # inner header destination address
970 # packets with SRH, segments-left 0, active segment a3::c4
971 packet_header = self.create_packet_header_IPv6_SRH_IPv4(
973 sidlist=['a3::c4', 'a2::', 'a1::'],
975 # add to traffic stream pg0->pg1
976 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
977 self.pg_packet_sizes, count))
979 # packets without SRH, IPv4 in IPv6
980 # outer IPv6 dest addr is the localsid End.DX4
981 packet_header = self.create_packet_header_IPv6_IPv4(
984 # add to traffic stream pg0->pg1
985 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
986 self.pg_packet_sizes, count))
988 # send packets and verify received packets
989 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
990 self.compare_rx_tx_packet_End_DX4)
992 # log the localsid counters
993 self.logger.info(self.vapi.cli("show sr localsid"))
995 # remove SRv6 localSIDs
996 localsid.remove_vpp_config()
999 self.teardown_interfaces()
1001 def test_SRv6_End_DT4(self):
1002 """ Test SRv6 End.DT4 behavior.
1004 # create three interfaces (1 source, 2 destinations)
1005 # source interface is IPv6-only
1006 # destination interfaces are IPv4 only
1007 # source interface in global FIB (0)
1008 # destination interfaces in global and vrf
1010 self.setup_interfaces(ipv6=[True, False, False],
1011 ipv4=[False, True, True],
1012 ipv6_table_id=[0, 0, 0],
1013 ipv4_table_id=[0, 0, vrf_1])
1015 # configure FIB entries
1016 # 4.1.1.0/24 is reachable
1017 # via pg1 in table 0 (global)
1018 # and via pg2 in table vrf_1
1019 route0 = VppIpRoute(self, "4.1.1.0", 24,
1020 [VppRoutePath(self.pg1.remote_ip4,
1021 self.pg1.sw_if_index,
1025 route0.add_vpp_config()
1026 route1 = VppIpRoute(self, "4.1.1.0", 24,
1027 [VppRoutePath(self.pg2.remote_ip4,
1028 self.pg2.sw_if_index,
1029 nh_table_id=vrf_1)],
1032 route1.add_vpp_config()
1033 self.logger.debug(self.vapi.cli("show ip fib"))
1035 # configure SRv6 localSID End.DT6 behavior
1037 # fib_table: where the localsid is installed
1038 # sw_if_index: in T-variants of localsid: vrf table_id
1039 localsid = VppSRv6LocalSID(
1040 self, localsid_addr='a3::c4',
1041 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
1047 localsid.add_vpp_config()
1049 self.logger.debug(self.vapi.cli("show sr localsid"))
1051 # create IPv6 packets with SRH (SL=0)
1052 # send one packet per packet size
1053 count = len(self.pg_packet_sizes)
1054 dst_inner = '4.1.1.123' # inner header destination address
1057 # packets with SRH, segments-left 0, active segment a3::c4
1058 packet_header = self.create_packet_header_IPv6_SRH_IPv4(
1060 sidlist=['a3::c4', 'a2::', 'a1::'],
1062 # add to traffic stream pg0->pg1
1063 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
1064 self.pg_packet_sizes, count))
1066 # packets without SRH, IPv6 in IPv6
1067 # outer IPv6 dest addr is the localsid End.DX4
1068 packet_header = self.create_packet_header_IPv6_IPv4(
1071 # add to traffic stream pg0->pg1
1072 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
1073 self.pg_packet_sizes, count))
1075 # send packets and verify received packets
1076 # using same comparison function as End.DX4
1077 self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
1078 self.compare_rx_tx_packet_End_DX4)
1080 # assert nothing was received on the other interface (pg2)
1081 self.pg1.assert_nothing_captured("mis-directed packet(s)")
1083 # log the localsid counters
1084 self.logger.info(self.vapi.cli("show sr localsid"))
1086 # remove SRv6 localSIDs
1087 localsid.remove_vpp_config()
1089 # remove FIB entries
1092 # cleanup interfaces
1093 self.teardown_interfaces()
1095 def test_SRv6_End_DX2(self):
1096 """ Test SRv6 End.DX2 behavior.
1098 # send traffic to one destination interface
1099 # source interface is IPv6 only
1100 self.setup_interfaces(ipv6=[True, False], ipv4=[False, False])
1102 # configure SRv6 localSID End.DX2 behavior
1103 localsid = VppSRv6LocalSID(
1104 self, localsid_addr='a3::c4',
1105 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
1108 sw_if_index=self.pg1.sw_if_index,
1111 localsid.add_vpp_config()
1113 self.logger.debug(self.vapi.cli("show sr localsid"))
1115 # send one packet per packet size
1116 count = len(self.pg_packet_sizes)
1119 # packets with SRH, segments-left 0, active segment a3::c4
1120 # L2 has no dot1q header
1121 packet_header = self.create_packet_header_IPv6_SRH_L2(
1122 sidlist=['a3::c4', 'a2::', 'a1::'],
1125 # add to traffic stream pg0->pg1
1126 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1127 self.pg_packet_sizes, count))
1129 # packets with SRH, segments-left 0, active segment a3::c4
1130 # L2 has dot1q header
1131 packet_header = self.create_packet_header_IPv6_SRH_L2(
1132 sidlist=['a3::c4', 'a2::', 'a1::'],
1135 # add to traffic stream pg0->pg1
1136 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1137 self.pg_packet_sizes, count))
1139 # packets without SRH, L2 in IPv6
1140 # outer IPv6 dest addr is the localsid End.DX2
1141 # L2 has no dot1q header
1142 packet_header = self.create_packet_header_IPv6_L2(
1145 # add to traffic stream pg0->pg1
1146 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1147 self.pg_packet_sizes, count))
1149 # packets without SRH, L2 in IPv6
1150 # outer IPv6 dest addr is the localsid End.DX2
1151 # L2 has dot1q header
1152 packet_header = self.create_packet_header_IPv6_L2(
1155 # add to traffic stream pg0->pg1
1156 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1157 self.pg_packet_sizes, count))
1159 # send packets and verify received packets
1160 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
1161 self.compare_rx_tx_packet_End_DX2)
1163 # log the localsid counters
1164 self.logger.info(self.vapi.cli("show sr localsid"))
1166 # remove SRv6 localSIDs
1167 localsid.remove_vpp_config()
1169 # cleanup interfaces
1170 self.teardown_interfaces()
1172 @unittest.skipUnless(0, "PC to fix")
1173 def test_SRv6_T_Insert_Classifier(self):
1174 """ Test SRv6 Transit.Insert behavior (IPv6 only).
1175 steer packets using the classifier
1177 # send traffic to one destination interface
1178 # source and destination are IPv6 only
1179 self.setup_interfaces(ipv6=[False, False, False, True, True])
1181 # configure FIB entries
1182 route = VppIpRoute(self, "a4::", 64,
1183 [VppRoutePath(self.pg4.remote_ip6,
1184 self.pg4.sw_if_index,
1185 proto=DpoProto.DPO_PROTO_IP6)],
1187 route.add_vpp_config()
1189 # configure encaps IPv6 source address
1190 # needs to be done before SR Policy config
1192 self.vapi.cli("set sr encaps source addr a3::")
1195 # configure SRv6 Policy
1196 # Note: segment list order: first -> last
1197 sr_policy = VppSRv6Policy(
1200 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
1201 weight=1, fib_table=0,
1202 segments=['a4::', 'a5::', 'a6::c7'],
1204 sr_policy.add_vpp_config()
1205 self.sr_policy = sr_policy
1207 # log the sr policies
1208 self.logger.info(self.vapi.cli("show sr policies"))
1210 # add classify table
1211 # mask on dst ip address prefix a7::/8
1212 mask = '{:0<16}'.format('ff')
1213 r = self.vapi.classify_add_del_table(
1215 binascii.unhexlify(mask),
1216 match_n_vectors=(len(mask) - 1) // 32 + 1,
1217 current_data_flag=1,
1218 skip_n_vectors=2) # data offset
1219 self.assertIsNotNone(r, msg='No response msg for add_del_table')
1220 table_index = r.new_table_index
1222 # add the source routign node as a ip6 inacl netxt node
1223 r = self.vapi.add_node_next('ip6-inacl',
1224 'sr-pl-rewrite-insert')
1225 inacl_next_node_index = r.node_index
1227 match = '{:0<16}'.format('a7')
1228 r = self.vapi.classify_add_del_session(
1231 binascii.unhexlify(match),
1232 hit_next_index=inacl_next_node_index,
1234 metadata=0) # sr policy index
1235 self.assertIsNotNone(r, msg='No response msg for add_del_session')
1237 # log the classify table used in the steering policy
1238 self.logger.info(self.vapi.cli("show classify table"))
1240 r = self.vapi.input_acl_set_interface(
1242 sw_if_index=self.pg3.sw_if_index,
1243 ip6_table_index=table_index)
1244 self.assertIsNotNone(r,
1245 msg='No response msg for input_acl_set_interface')
1248 self.logger.info(self.vapi.cli("show inacl type ip6"))
1251 count = len(self.pg_packet_sizes)
1252 dst_inner = 'a7::1234'
1255 # create IPv6 packets without SRH
1256 packet_header = self.create_packet_header_IPv6(dst_inner)
1257 # create traffic stream pg3->pg4
1258 pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
1259 self.pg_packet_sizes, count))
1261 # create IPv6 packets with SRH
1262 # packets with segments-left 1, active segment a7::
1263 packet_header = self.create_packet_header_IPv6_SRH(
1264 sidlist=['a8::', 'a7::', 'a6::'],
1266 # create traffic stream pg3->pg4
1267 pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
1268 self.pg_packet_sizes, count))
1270 # send packets and verify received packets
1271 self.send_and_verify_pkts(self.pg3, pkts, self.pg4,
1272 self.compare_rx_tx_packet_T_Insert)
1274 # remove the interface l2 input feature
1275 r = self.vapi.input_acl_set_interface(
1277 sw_if_index=self.pg3.sw_if_index,
1278 ip6_table_index=table_index)
1279 self.assertIsNotNone(r,
1280 msg='No response msg for input_acl_set_interface')
1282 # log the ip6 inacl after cleaning
1283 self.logger.info(self.vapi.cli("show inacl type ip6"))
1285 # log the localsid counters
1286 self.logger.info(self.vapi.cli("show sr localsid"))
1288 # remove classifier SR steering
1289 # classifier_steering.remove_vpp_config()
1290 self.logger.info(self.vapi.cli("show sr steering policies"))
1292 # remove SR Policies
1293 self.sr_policy.remove_vpp_config()
1294 self.logger.info(self.vapi.cli("show sr policies"))
1296 # remove classify session and table
1297 r = self.vapi.classify_add_del_session(
1300 binascii.unhexlify(match))
1301 self.assertIsNotNone(r, msg='No response msg for add_del_session')
1303 r = self.vapi.classify_add_del_table(
1305 binascii.unhexlify(mask),
1306 table_index=table_index)
1307 self.assertIsNotNone(r, msg='No response msg for add_del_table')
1309 self.logger.info(self.vapi.cli("show classify table"))
1311 # remove FIB entries
1314 # cleanup interfaces
1315 self.teardown_interfaces()
1317 def compare_rx_tx_packet_T_Encaps(self, tx_pkt, rx_pkt):
1318 """ Compare input and output packet after passing T.Encaps
1320 :param tx_pkt: transmitted packet
1321 :param rx_pkt: received packet
1323 # T.Encaps updates the headers as follows:
1324 # SR Policy seglist (S3, S2, S1)
1325 # SR Policy source C
1328 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(A, B2)
1330 # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
1331 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(a, B2)SRH(B3, B2, B1; SL=1)
1333 # get first (outer) IPv6 header of rx'ed packet
1334 rx_ip = rx_pkt.getlayer(IPv6)
1337 tx_ip = tx_pkt.getlayer(IPv6)
1339 # expected segment-list
1340 seglist = self.sr_policy.segments
1341 # reverse list to get order as in SRH
1342 tx_seglist = seglist[::-1]
1344 # get source address of SR Policy
1345 sr_policy_source = self.sr_policy.source
1347 # rx'ed packet should have SRH
1348 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1350 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1352 # received ip.src should be equal to SR Policy source
1353 self.assertEqual(rx_ip.src, sr_policy_source)
1354 # received ip.dst should be equal to expected sidlist[lastentry]
1355 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1356 # rx'ed seglist should be equal to expected seglist
1357 self.assertEqual(rx_srh.addresses, tx_seglist)
1358 # segleft should be equal to size expected seglist-1
1359 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1360 # segleft should be equal to lastentry
1361 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1363 # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
1364 # except for the hop-limit field
1365 # -> update tx'ed hlim to the expected hlim
1366 tx_ip.hlim = tx_ip.hlim - 1
1368 self.assertEqual(rx_srh.payload, tx_ip)
1370 self.logger.debug("packet verification: SUCCESS")
1372 def compare_rx_tx_packet_T_Encaps_IPv4(self, tx_pkt, rx_pkt):
1373 """ Compare input and output packet after passing T.Encaps for IPv4
1375 :param tx_pkt: transmitted packet
1376 :param rx_pkt: received packet
1378 # T.Encaps for IPv4 updates the headers as follows:
1379 # SR Policy seglist (S3, S2, S1)
1380 # SR Policy source C
1383 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv4(A, B2)
1385 # get first (outer) IPv6 header of rx'ed packet
1386 rx_ip = rx_pkt.getlayer(IPv6)
1389 tx_ip = tx_pkt.getlayer(IP)
1391 # expected segment-list
1392 seglist = self.sr_policy.segments
1393 # reverse list to get order as in SRH
1394 tx_seglist = seglist[::-1]
1396 # get source address of SR Policy
1397 sr_policy_source = self.sr_policy.source
1399 # checks common to cases tx with and without SRH
1400 # rx'ed packet should have SRH and IPv4 header
1401 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1402 self.assertTrue(rx_ip.payload.haslayer(IP))
1404 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1406 # received ip.src should be equal to SR Policy source
1407 self.assertEqual(rx_ip.src, sr_policy_source)
1408 # received ip.dst should be equal to sidlist[lastentry]
1409 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1410 # rx'ed seglist should be equal to seglist
1411 self.assertEqual(rx_srh.addresses, tx_seglist)
1412 # segleft should be equal to size seglist-1
1413 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1414 # segleft should be equal to lastentry
1415 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1417 # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
1418 # except for the ttl field and ip checksum
1419 # -> adjust tx'ed ttl to expected ttl
1420 tx_ip.ttl = tx_ip.ttl - 1
1421 # -> set tx'ed ip checksum to None and let scapy recompute
1423 # read back the pkt (with str()) to force computing these fields
1424 # probably other ways to accomplish this are possible
1425 tx_ip = IP(str(tx_ip))
1427 self.assertEqual(rx_srh.payload, tx_ip)
1429 self.logger.debug("packet verification: SUCCESS")
1431 def compare_rx_tx_packet_T_Encaps_L2(self, tx_pkt, rx_pkt):
1432 """ Compare input and output packet after passing T.Encaps for L2
1434 :param tx_pkt: transmitted packet
1435 :param rx_pkt: received packet
1437 # T.Encaps for L2 updates the headers as follows:
1438 # SR Policy seglist (S3, S2, S1)
1439 # SR Policy source C
1442 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)L2
1444 # get first (outer) IPv6 header of rx'ed packet
1445 rx_ip = rx_pkt.getlayer(IPv6)
1448 tx_ether = tx_pkt.getlayer(Ether)
1450 # expected segment-list
1451 seglist = self.sr_policy.segments
1452 # reverse list to get order as in SRH
1453 tx_seglist = seglist[::-1]
1455 # get source address of SR Policy
1456 sr_policy_source = self.sr_policy.source
1458 # rx'ed packet should have SRH
1459 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1461 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1463 # received ip.src should be equal to SR Policy source
1464 self.assertEqual(rx_ip.src, sr_policy_source)
1465 # received ip.dst should be equal to sidlist[lastentry]
1466 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1467 # rx'ed seglist should be equal to seglist
1468 self.assertEqual(rx_srh.addresses, tx_seglist)
1469 # segleft should be equal to size seglist-1
1470 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1471 # segleft should be equal to lastentry
1472 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1473 # nh should be "No Next Header" (59)
1474 self.assertEqual(rx_srh.nh, 59)
1476 # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
1477 self.assertEqual(Ether(str(rx_srh.payload)), tx_ether)
1479 self.logger.debug("packet verification: SUCCESS")
1481 def compare_rx_tx_packet_T_Insert(self, tx_pkt, rx_pkt):
1482 """ Compare input and output packet after passing T.Insert
1484 :param tx_pkt: transmitted packet
1485 :param rx_pkt: received packet
1487 # T.Insert updates the headers as follows:
1490 # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)
1492 # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
1493 # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)SRH(B3, B2, B1; SL=1)
1495 # get first (outer) IPv6 header of rx'ed packet
1496 rx_ip = rx_pkt.getlayer(IPv6)
1501 rx_udp = rx_pkt[UDP]
1503 tx_ip = tx_pkt.getlayer(IPv6)
1506 # some packets have been tx'ed with an SRH, some without it
1507 # get SRH if tx'ed packet has it
1508 if tx_pkt.haslayer(IPv6ExtHdrSegmentRouting):
1509 tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1510 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1511 tx_udp = tx_pkt[UDP]
1513 # expected segment-list (make copy of SR Policy segment list)
1514 seglist = self.sr_policy.segments[:]
1515 # expected seglist has initial dest addr as last segment
1516 seglist.append(tx_ip.dst)
1517 # reverse list to get order as in SRH
1518 tx_seglist = seglist[::-1]
1520 # get source address of SR Policy
1521 sr_policy_source = self.sr_policy.source
1523 # checks common to cases tx with and without SRH
1524 # rx'ed packet should have SRH and only one IPv6 header
1525 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1526 self.assertFalse(rx_ip.payload.haslayer(IPv6))
1528 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1530 # rx'ed ip.src should be equal to tx'ed ip.src
1531 self.assertEqual(rx_ip.src, tx_ip.src)
1532 # rx'ed ip.dst should be equal to sidlist[lastentry]
1533 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1535 # rx'ed seglist should be equal to expected seglist
1536 self.assertEqual(rx_srh.addresses, tx_seglist)
1537 # segleft should be equal to size(expected seglist)-1
1538 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1539 # segleft should be equal to lastentry
1540 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1542 if tx_srh: # packet was tx'ed with SRH
1543 # packet should have 2nd SRH
1544 self.assertTrue(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
1546 rx_srh2 = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting, 2)
1548 # rx'ed srh2.addresses should be equal to tx'ed srh.addresses
1549 self.assertEqual(rx_srh2.addresses, tx_srh.addresses)
1550 # rx'ed srh2.segleft should be equal to tx'ed srh.segleft
1551 self.assertEqual(rx_srh2.segleft, tx_srh.segleft)
1552 # rx'ed srh2.lastentry should be equal to tx'ed srh.lastentry
1553 self.assertEqual(rx_srh2.lastentry, tx_srh.lastentry)
1555 else: # packet was tx'ed without SRH
1556 # rx packet should have no other SRH
1557 self.assertFalse(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
1559 # UDP layer should be unchanged
1560 self.assertEqual(rx_udp, tx_udp)
1562 self.logger.debug("packet verification: SUCCESS")
1564 def compare_rx_tx_packet_End(self, tx_pkt, rx_pkt):
1565 """ Compare input and output packet after passing End (without PSP)
1567 :param tx_pkt: transmitted packet
1568 :param rx_pkt: received packet
1570 # End (no PSP) updates the headers as follows:
1572 # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
1573 # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
1575 # get first (outer) IPv6 header of rx'ed packet
1576 rx_ip = rx_pkt.getlayer(IPv6)
1579 rx_udp = rx_pkt[UDP]
1581 tx_ip = tx_pkt.getlayer(IPv6)
1582 # we know the packet has been tx'ed
1583 # with an inner IPv6 header and an SRH
1584 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1585 tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1586 tx_udp = tx_pkt[UDP]
1588 # common checks, regardless of tx segleft value
1589 # rx'ed packet should have 2nd IPv6 header
1590 self.assertTrue(rx_ip.payload.haslayer(IPv6))
1591 # get second (inner) IPv6 header
1592 rx_ip2 = rx_pkt.getlayer(IPv6, 2)
1594 if tx_ip.segleft > 0:
1595 # SRH should NOT have been popped:
1596 # End SID without PSP does not pop SRH if segleft>0
1597 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1598 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1600 # received ip.src should be equal to expected ip.src
1601 self.assertEqual(rx_ip.src, tx_ip.src)
1602 # sidlist should be unchanged
1603 self.assertEqual(rx_srh.addresses, tx_srh.addresses)
1604 # segleft should have been decremented
1605 self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
1606 # received ip.dst should be equal to sidlist[segleft]
1607 self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
1608 # lastentry should be unchanged
1609 self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
1610 # inner IPv6 packet (ip2) should be unchanged
1611 self.assertEqual(rx_ip2.src, tx_ip2.src)
1612 self.assertEqual(rx_ip2.dst, tx_ip2.dst)
1613 # else: # tx_ip.segleft == 0
1614 # TODO: Does this work with 2 SRHs in ingress packet?
1616 # UDP layer should be unchanged
1617 self.assertEqual(rx_udp, tx_udp)
1619 self.logger.debug("packet verification: SUCCESS")
1621 def compare_rx_tx_packet_End_PSP(self, tx_pkt, rx_pkt):
1622 """ Compare input and output packet after passing End with PSP
1624 :param tx_pkt: transmitted packet
1625 :param rx_pkt: received packet
1627 # End (PSP) updates the headers as follows:
1628 # IPv6 + SRH (SL>1):
1629 # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
1630 # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
1631 # IPv6 + SRH (SL=1):
1632 # in: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
1635 # get first (outer) IPv6 header of rx'ed packet
1636 rx_ip = rx_pkt.getlayer(IPv6)
1639 rx_udp = rx_pkt[UDP]
1641 tx_ip = tx_pkt.getlayer(IPv6)
1642 # we know the packet has been tx'ed
1643 # with an inner IPv6 header and an SRH
1644 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1645 tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1646 tx_udp = tx_pkt[UDP]
1648 # common checks, regardless of tx segleft value
1649 self.assertTrue(rx_ip.payload.haslayer(IPv6))
1650 rx_ip2 = rx_pkt.getlayer(IPv6, 2)
1651 # inner IPv6 packet (ip2) should be unchanged
1652 self.assertEqual(rx_ip2.src, tx_ip2.src)
1653 self.assertEqual(rx_ip2.dst, tx_ip2.dst)
1655 if tx_ip.segleft > 1:
1656 # SRH should NOT have been popped:
1657 # End SID with PSP does not pop SRH if segleft>1
1658 # rx'ed packet should have SRH
1659 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1660 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1662 # received ip.src should be equal to expected ip.src
1663 self.assertEqual(rx_ip.src, tx_ip.src)
1664 # sidlist should be unchanged
1665 self.assertEqual(rx_srh.addresses, tx_srh.addresses)
1666 # segleft should have been decremented
1667 self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
1668 # received ip.dst should be equal to sidlist[segleft]
1669 self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
1670 # lastentry should be unchanged
1671 self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
1673 else: # tx_ip.segleft <= 1
1674 # SRH should have been popped:
1675 # End SID with PSP and segleft=1 pops SRH
1676 # the two IPv6 headers are still present
1677 # outer IPv6 header has DA == last segment of popped SRH
1678 # SRH should not be present
1679 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1680 # outer IPv6 header ip.src should be equal to tx'ed ip.src
1681 self.assertEqual(rx_ip.src, tx_ip.src)
1682 # outer IPv6 header ip.dst should be = to tx'ed sidlist[segleft-1]
1683 self.assertEqual(rx_ip.dst, tx_srh.addresses[tx_srh.segleft-1])
1685 # UDP layer should be unchanged
1686 self.assertEqual(rx_udp, tx_udp)
1688 self.logger.debug("packet verification: SUCCESS")
1690 def compare_rx_tx_packet_End_DX6(self, tx_pkt, rx_pkt):
1691 """ Compare input and output packet after passing End.DX6
1693 :param tx_pkt: transmitted packet
1694 :param rx_pkt: received packet
1696 # End.DX6 updates the headers as follows:
1697 # IPv6 + SRH (SL=0):
1698 # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv6(B, D)
1701 # in: IPv6(A, S3)IPv6(B, D)
1704 # get first (outer) IPv6 header of rx'ed packet
1705 rx_ip = rx_pkt.getlayer(IPv6)
1707 tx_ip = tx_pkt.getlayer(IPv6)
1708 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1710 # verify if rx'ed packet has no SRH
1711 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1713 # the whole rx_ip pkt should be equal to tx_ip2
1714 # except for the hlim field
1715 # -> adjust tx'ed hlim to expected hlim
1716 tx_ip2.hlim = tx_ip2.hlim - 1
1718 self.assertEqual(rx_ip, tx_ip2)
1720 self.logger.debug("packet verification: SUCCESS")
1722 def compare_rx_tx_packet_End_DX4(self, tx_pkt, rx_pkt):
1723 """ Compare input and output packet after passing End.DX4
1725 :param tx_pkt: transmitted packet
1726 :param rx_pkt: received packet
1728 # End.DX4 updates the headers as follows:
1729 # IPv6 + SRH (SL=0):
1730 # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv4(B, D)
1733 # in: IPv6(A, S3)IPv4(B, D)
1736 # get IPv4 header of rx'ed packet
1737 rx_ip = rx_pkt.getlayer(IP)
1739 tx_ip = tx_pkt.getlayer(IPv6)
1740 tx_ip2 = tx_pkt.getlayer(IP)
1742 # verify if rx'ed packet has no SRH
1743 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1745 # the whole rx_ip pkt should be equal to tx_ip2
1746 # except for the ttl field and ip checksum
1747 # -> adjust tx'ed ttl to expected ttl
1748 tx_ip2.ttl = tx_ip2.ttl - 1
1749 # -> set tx'ed ip checksum to None and let scapy recompute
1750 tx_ip2.chksum = None
1751 # read back the pkt (with str()) to force computing these fields
1752 # probably other ways to accomplish this are possible
1753 tx_ip2 = IP(str(tx_ip2))
1755 self.assertEqual(rx_ip, tx_ip2)
1757 self.logger.debug("packet verification: SUCCESS")
1759 def compare_rx_tx_packet_End_DX2(self, tx_pkt, rx_pkt):
1760 """ Compare input and output packet after passing End.DX2
1762 :param tx_pkt: transmitted packet
1763 :param rx_pkt: received packet
1765 # End.DX2 updates the headers as follows:
1766 # IPv6 + SRH (SL=0):
1767 # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)L2
1773 # get IPv4 header of rx'ed packet
1774 rx_eth = rx_pkt.getlayer(Ether)
1776 tx_ip = tx_pkt.getlayer(IPv6)
1777 # we can't just get the 2nd Ether layer
1778 # get the Raw content and dissect it as Ether
1779 tx_eth1 = Ether(str(tx_pkt[Raw]))
1781 # verify if rx'ed packet has no SRH
1782 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1784 # the whole rx_eth pkt should be equal to tx_eth1
1785 self.assertEqual(rx_eth, tx_eth1)
1787 self.logger.debug("packet verification: SUCCESS")
1789 def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
1791 """Create SRv6 input packet stream for defined interface.
1793 :param VppInterface src_if: Interface to create packet stream for
1794 :param VppInterface dst_if: destination interface of packet stream
1795 :param packet_header: Layer3 scapy packet headers,
1796 L2 is added when not provided,
1797 Raw(payload) with packet_info is added
1798 :param list packet_sizes: packet stream pckt sizes,sequentially applied
1799 to packets in stream have
1800 :param int count: number of packets in packet stream
1801 :return: list of packets
1803 self.logger.info("Creating packets")
1805 for i in range(0, count-1):
1806 payload_info = self.create_packet_info(src_if, dst_if)
1808 "Creating packet with index %d" % (payload_info.index))
1809 payload = self.info_to_payload(payload_info)
1810 # add L2 header if not yet provided in packet_header
1811 if packet_header.getlayer(0).name == 'Ethernet':
1812 p = (packet_header /
1815 p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
1818 size = packet_sizes[i % len(packet_sizes)]
1819 self.logger.debug("Packet size %d" % (size))
1820 self.extend_packet(p, size)
1821 # we need to store the packet with the automatic fields computed
1822 # read back the dumped packet (with str())
1823 # to force computing these fields
1824 # probably other ways are possible
1826 payload_info.data = p.copy()
1827 self.logger.debug(ppp("Created packet:", p))
1829 self.logger.info("Done creating packets")
1832 def send_and_verify_pkts(self, input, pkts, output, compare_func):
1833 """Send packets and verify received packets using compare_func
1835 :param input: ingress interface of DUT
1836 :param pkts: list of packets to transmit
1837 :param output: egress interface of DUT
1838 :param compare_func: function to compare in and out packets
1840 # add traffic stream to input interface
1841 input.add_stream(pkts)
1843 # enable capture on all interfaces
1844 self.pg_enable_capture(self.pg_interfaces)
1847 self.logger.info("Starting traffic")
1850 # get output capture
1851 self.logger.info("Getting packet capture")
1852 capture = output.get_capture()
1854 # assert nothing was captured on input interface
1855 input.assert_nothing_captured()
1857 # verify captured packets
1858 self.verify_captured_pkts(output, capture, compare_func)
1860 def create_packet_header_IPv6(self, dst):
1861 """Create packet header: IPv6 header, UDP header
1863 :param dst: IPv6 destination address
1865 IPv6 source address is 1234::1
1866 UDP source port and destination port are 1234
1869 p = (IPv6(src='1234::1', dst=dst) /
1870 UDP(sport=1234, dport=1234))
1873 def create_packet_header_IPv6_SRH(self, sidlist, segleft):
1874 """Create packet header: IPv6 header with SRH, UDP header
1876 :param list sidlist: segment list
1877 :param int segleft: segments-left field value
1879 IPv6 destination address is set to sidlist[segleft]
1880 IPv6 source addresses are 1234::1 and 4321::1
1881 UDP source port and destination port are 1234
1884 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
1885 IPv6ExtHdrSegmentRouting(addresses=sidlist) /
1886 UDP(sport=1234, dport=1234))
1889 def create_packet_header_IPv6_SRH_IPv6(self, dst, sidlist, segleft):
1890 """Create packet header: IPv6 encapsulated in SRv6:
1891 IPv6 header with SRH, IPv6 header, UDP header
1893 :param ipv6address dst: inner IPv6 destination address
1894 :param list sidlist: segment list of outer IPv6 SRH
1895 :param int segleft: segments-left field of outer IPv6 SRH
1897 Outer IPv6 destination address is set to sidlist[segleft]
1898 IPv6 source addresses are 1234::1 and 4321::1
1899 UDP source port and destination port are 1234
1902 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
1903 IPv6ExtHdrSegmentRouting(addresses=sidlist,
1904 segleft=segleft, nh=41) /
1905 IPv6(src='4321::1', dst=dst) /
1906 UDP(sport=1234, dport=1234))
1909 def create_packet_header_IPv6_IPv6(self, dst_inner, dst_outer):
1910 """Create packet header: IPv6 encapsulated in IPv6:
1911 IPv6 header, IPv6 header, UDP header
1913 :param ipv6address dst_inner: inner IPv6 destination address
1914 :param ipv6address dst_outer: outer IPv6 destination address
1916 IPv6 source addresses are 1234::1 and 4321::1
1917 UDP source port and destination port are 1234
1920 p = (IPv6(src='1234::1', dst=dst_outer) /
1921 IPv6(src='4321::1', dst=dst_inner) /
1922 UDP(sport=1234, dport=1234))
1925 def create_packet_header_IPv6_SRH_SRH_IPv6(self, dst, sidlist1, segleft1,
1926 sidlist2, segleft2):
1927 """Create packet header: IPv6 encapsulated in SRv6 with 2 SRH:
1928 IPv6 header with SRH, 2nd SRH, IPv6 header, UDP header
1930 :param ipv6address dst: inner IPv6 destination address
1931 :param list sidlist1: segment list of outer IPv6 SRH
1932 :param int segleft1: segments-left field of outer IPv6 SRH
1933 :param list sidlist2: segment list of inner IPv6 SRH
1934 :param int segleft2: segments-left field of inner IPv6 SRH
1936 Outer IPv6 destination address is set to sidlist[segleft]
1937 IPv6 source addresses are 1234::1 and 4321::1
1938 UDP source port and destination port are 1234
1941 p = (IPv6(src='1234::1', dst=sidlist1[segleft1]) /
1942 IPv6ExtHdrSegmentRouting(addresses=sidlist1,
1943 segleft=segleft1, nh=43) /
1944 IPv6ExtHdrSegmentRouting(addresses=sidlist2,
1945 segleft=segleft2, nh=41) /
1946 IPv6(src='4321::1', dst=dst) /
1947 UDP(sport=1234, dport=1234))
1950 def create_packet_header_IPv4(self, dst):
1951 """Create packet header: IPv4 header, UDP header
1953 :param dst: IPv4 destination address
1955 IPv4 source address is 123.1.1.1
1956 UDP source port and destination port are 1234
1959 p = (IP(src='123.1.1.1', dst=dst) /
1960 UDP(sport=1234, dport=1234))
1963 def create_packet_header_IPv6_IPv4(self, dst_inner, dst_outer):
1964 """Create packet header: IPv4 encapsulated in IPv6:
1965 IPv6 header, IPv4 header, UDP header
1967 :param ipv4address dst_inner: inner IPv4 destination address
1968 :param ipv6address dst_outer: outer IPv6 destination address
1970 IPv6 source address is 1234::1
1971 IPv4 source address is 123.1.1.1
1972 UDP source port and destination port are 1234
1975 p = (IPv6(src='1234::1', dst=dst_outer) /
1976 IP(src='123.1.1.1', dst=dst_inner) /
1977 UDP(sport=1234, dport=1234))
1980 def create_packet_header_IPv6_SRH_IPv4(self, dst, sidlist, segleft):
1981 """Create packet header: IPv4 encapsulated in SRv6:
1982 IPv6 header with SRH, IPv4 header, UDP header
1984 :param ipv4address dst: inner IPv4 destination address
1985 :param list sidlist: segment list of outer IPv6 SRH
1986 :param int segleft: segments-left field of outer IPv6 SRH
1988 Outer IPv6 destination address is set to sidlist[segleft]
1989 IPv6 source address is 1234::1
1990 IPv4 source address is 123.1.1.1
1991 UDP source port and destination port are 1234
1994 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
1995 IPv6ExtHdrSegmentRouting(addresses=sidlist,
1996 segleft=segleft, nh=4) /
1997 IP(src='123.1.1.1', dst=dst) /
1998 UDP(sport=1234, dport=1234))
2001 def create_packet_header_L2(self, vlan=0):
2002 """Create packet header: L2 header
2004 :param vlan: if vlan!=0 then add 802.1q header
2006 # Note: the dst addr ('00:55:44:33:22:11') is used in
2007 # the compare function compare_rx_tx_packet_T_Encaps_L2
2008 # to detect presence of L2 in SRH payload
2009 p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2010 etype = 0x8137 # IPX
2013 p /= Dot1Q(vlan=vlan, type=etype)
2018 def create_packet_header_IPv6_SRH_L2(self, sidlist, segleft, vlan=0):
2019 """Create packet header: L2 encapsulated in SRv6:
2020 IPv6 header with SRH, L2
2022 :param list sidlist: segment list of outer IPv6 SRH
2023 :param int segleft: segments-left field of outer IPv6 SRH
2024 :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
2026 Outer IPv6 destination address is set to sidlist[segleft]
2027 IPv6 source address is 1234::1
2029 eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2030 etype = 0x8137 # IPX
2033 eth /= Dot1Q(vlan=vlan, type=etype)
2037 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
2038 IPv6ExtHdrSegmentRouting(addresses=sidlist,
2039 segleft=segleft, nh=59) /
2043 def create_packet_header_IPv6_L2(self, dst_outer, vlan=0):
2044 """Create packet header: L2 encapsulated in IPv6:
2047 :param ipv6address dst_outer: outer IPv6 destination address
2048 :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
2050 eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2051 etype = 0x8137 # IPX
2054 eth /= Dot1Q(vlan=vlan, type=etype)
2058 p = (IPv6(src='1234::1', dst=dst_outer, nh=59) / eth)
2061 def get_payload_info(self, packet):
2062 """ Extract the payload_info from the packet
2064 # in most cases, payload_info is in packet[Raw]
2065 # but packet[Raw] gives the complete payload
2066 # (incl L2 header) for the T.Encaps L2 case
2068 payload_info = self.payload_to_info(str(packet[Raw]))
2071 # remote L2 header from packet[Raw]:
2072 # take packet[Raw], convert it to an Ether layer
2073 # and then extract Raw from it
2074 payload_info = self.payload_to_info(
2075 str(Ether(str(packet[Raw]))[Raw]))
2079 def verify_captured_pkts(self, dst_if, capture, compare_func):
2081 Verify captured packet stream for specified interface.
2082 Compare ingress with egress packets using the specified compare fn
2084 :param dst_if: egress interface of DUT
2085 :param capture: captured packets
2086 :param compare_func: function to compare in and out packet
2088 self.logger.info("Verifying capture on interface %s using function %s"
2089 % (dst_if.name, compare_func.func_name))
2092 for i in self.pg_interfaces:
2093 last_info[i.sw_if_index] = None
2094 dst_sw_if_index = dst_if.sw_if_index
2096 for packet in capture:
2098 # extract payload_info from packet's payload
2099 payload_info = self.get_payload_info(packet)
2100 packet_index = payload_info.index
2102 self.logger.debug("Verifying packet with index %d"
2104 # packet should have arrived on the expected interface
2105 self.assertEqual(payload_info.dst, dst_sw_if_index)
2107 "Got packet on interface %s: src=%u (idx=%u)" %
2108 (dst_if.name, payload_info.src, packet_index))
2110 # search for payload_info with same src and dst if_index
2111 # this will give us the transmitted packet
2112 next_info = self.get_next_packet_info_for_interface2(
2113 payload_info.src, dst_sw_if_index,
2114 last_info[payload_info.src])
2115 last_info[payload_info.src] = next_info
2116 # next_info should not be None
2117 self.assertTrue(next_info is not None)
2118 # index of tx and rx packets should be equal
2119 self.assertEqual(packet_index, next_info.index)
2120 # data field of next_info contains the tx packet
2121 txed_packet = next_info.data
2123 self.logger.debug(ppp("Transmitted packet:",
2124 txed_packet)) # ppp=Pretty Print Packet
2126 self.logger.debug(ppp("Received packet:", packet))
2128 # compare rcvd packet with expected packet using compare_func
2129 compare_func(txed_packet, packet)
2132 print packet.command()
2133 self.logger.error(ppp("Unexpected or invalid packet:", packet))
2136 # have all expected packets arrived?
2137 for i in self.pg_interfaces:
2138 remaining_packet = self.get_next_packet_info_for_interface2(
2139 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
2140 self.assertTrue(remaining_packet is None,
2141 "Interface %s: Packet expected from interface %s "
2142 "didn't arrive" % (dst_if.name, i.name))
2145 if __name__ == '__main__':
2146 unittest.main(testRunner=VppTestRunner)