5 from socket import AF_INET6
7 from framework import VppTestCase, VppTestRunner
8 from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto, VppIpTable
9 from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
10 SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
13 from scapy.packet import Raw
14 from scapy.layers.l2 import Ether, Dot1Q
15 from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
16 from scapy.layers.inet import IP, UDP
18 from scapy.utils import inet_pton, inet_ntop
23 class TestSRv6(VppTestCase):
24 """ SRv6 Test Case """
28 super(TestSRv6, cls).setUpClass()
31 def tearDownClass(cls):
32 super(TestSRv6, cls).tearDownClass()
35 """ Perform test setup before each test case.
37 super(TestSRv6, self).setUp()
39 # packet sizes, inclusive L2 overhead
40 self.pg_packet_sizes = [64, 512, 1518, 9018]
43 self.reset_packet_infos()
46 """ Clean up test setup after each test case.
48 self.teardown_interfaces()
50 super(TestSRv6, self).tearDown()
52 def configure_interface(self,
54 ipv6=False, ipv4=False,
55 ipv6_table_id=0, ipv4_table_id=0):
56 """ Configure interface.
57 :param ipv6: configure IPv6 on interface
58 :param ipv4: configure IPv4 on interface
59 :param ipv6_table_id: FIB table_id for IPv6
60 :param ipv4_table_id: FIB table_id for IPv4
62 self.logger.debug("Configuring interface %s" % (interface.name))
64 self.logger.debug("Configuring IPv6")
65 interface.set_table_ip6(ipv6_table_id)
66 interface.config_ip6()
67 interface.resolve_ndp(timeout=5)
69 self.logger.debug("Configuring IPv4")
70 interface.set_table_ip4(ipv4_table_id)
71 interface.config_ip4()
72 interface.resolve_arp()
75 def setup_interfaces(self, ipv6=[], ipv4=[],
76 ipv6_table_id=[], ipv4_table_id=[]):
77 """ Create and configure interfaces.
79 :param ipv6: list of interface IPv6 capabilities
80 :param ipv4: list of interface IPv4 capabilities
81 :param ipv6_table_id: list of intf IPv6 FIB table_ids
82 :param ipv4_table_id: list of intf IPv4 FIB table_ids
83 :returns: List of created interfaces.
85 # how many interfaces?
90 self.logger.debug("Creating and configuring %d interfaces" % (count))
92 # fill up ipv6 and ipv4 lists if needed
93 # not enabled (False) is the default
95 ipv6 += (count - len(ipv6)) * [False]
97 ipv4 += (count - len(ipv4)) * [False]
99 # fill up table_id lists if needed
100 # table_id 0 (global) is the default
101 if len(ipv6_table_id) < count:
102 ipv6_table_id += (count - len(ipv6_table_id)) * [0]
103 if len(ipv4_table_id) < count:
104 ipv4_table_id += (count - len(ipv4_table_id)) * [0]
106 # create 'count' pg interfaces
107 self.create_pg_interfaces(range(count))
109 # setup all interfaces
110 for i in range(count):
111 intf = self.pg_interfaces[i]
112 self.configure_interface(intf,
114 ipv6_table_id[i], ipv4_table_id[i])
117 self.logger.debug(self.vapi.cli("show ip6 neighbors"))
119 self.logger.debug(self.vapi.cli("show ip arp"))
120 self.logger.debug(self.vapi.cli("show interface"))
121 self.logger.debug(self.vapi.cli("show hardware"))
123 return self.pg_interfaces
125 def teardown_interfaces(self):
126 """ Unconfigure and bring down interface.
128 self.logger.debug("Tearing down interfaces")
129 # tear down all interfaces
130 # AFAIK they cannot be deleted
131 for i in self.pg_interfaces:
132 self.logger.debug("Tear down interface %s" % (i.name))
138 @unittest.skipUnless(0, "PC to fix")
139 def test_SRv6_T_Encaps(self):
140 """ Test SRv6 Transit.Encaps behavior for IPv6.
142 # send traffic to one destination interface
143 # source and destination are IPv6 only
144 self.setup_interfaces(ipv6=[True, True])
146 # configure FIB entries
147 route = VppIpRoute(self, "a4::", 64,
148 [VppRoutePath(self.pg1.remote_ip6,
149 self.pg1.sw_if_index)])
150 route.add_vpp_config()
152 # configure encaps IPv6 source address
153 # needs to be done before SR Policy config
155 self.vapi.cli("set sr encaps source addr a3::")
158 # configure SRv6 Policy
159 # Note: segment list order: first -> last
160 sr_policy = VppSRv6Policy(
163 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
164 weight=1, fib_table=0,
165 segments=['a4::', 'a5::', 'a6::c7'],
167 sr_policy.add_vpp_config()
168 self.sr_policy = sr_policy
170 # log the sr policies
171 self.logger.info(self.vapi.cli("show sr policies"))
173 # steer IPv6 traffic to a7::/64 into SRv6 Policy
174 # use the bsid of the above self.sr_policy
175 pol_steering = VppSRv6Steering(
177 bsid=self.sr_policy.bsid,
178 prefix="a7::", mask_width=64,
179 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
180 sr_policy_index=0, table_id=0,
182 pol_steering.add_vpp_config()
184 # log the sr steering policies
185 self.logger.info(self.vapi.cli("show sr steering policies"))
188 count = len(self.pg_packet_sizes)
189 dst_inner = 'a7::1234'
192 # create IPv6 packets without SRH
193 packet_header = self.create_packet_header_IPv6(dst_inner)
194 # create traffic stream pg0->pg1
195 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
196 self.pg_packet_sizes, count))
198 # create IPv6 packets with SRH
199 # packets with segments-left 1, active segment a7::
200 packet_header = self.create_packet_header_IPv6_SRH(
201 sidlist=['a8::', 'a7::', 'a6::'],
203 # create traffic stream pg0->pg1
204 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
205 self.pg_packet_sizes, count))
207 # create IPv6 packets with SRH and IPv6
208 # packets with segments-left 1, active segment a7::
209 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
211 sidlist=['a8::', 'a7::', 'a6::'],
213 # create traffic stream pg0->pg1
214 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
215 self.pg_packet_sizes, count))
217 # send packets and verify received packets
218 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
219 self.compare_rx_tx_packet_T_Encaps)
221 # log the localsid counters
222 self.logger.info(self.vapi.cli("show sr localsid"))
225 pol_steering.remove_vpp_config()
226 self.logger.info(self.vapi.cli("show sr steering policies"))
229 self.sr_policy.remove_vpp_config()
230 self.logger.info(self.vapi.cli("show sr policies"))
236 self.teardown_interfaces()
238 @unittest.skipUnless(0, "PC to fix")
239 def test_SRv6_T_Insert(self):
240 """ Test SRv6 Transit.Insert behavior (IPv6 only).
242 # send traffic to one destination interface
243 # source and destination are IPv6 only
244 self.setup_interfaces(ipv6=[True, True])
246 # configure FIB entries
247 route = VppIpRoute(self, "a4::", 64,
248 [VppRoutePath(self.pg1.remote_ip6,
249 self.pg1.sw_if_index)])
250 route.add_vpp_config()
252 # configure encaps IPv6 source address
253 # needs to be done before SR Policy config
255 self.vapi.cli("set sr encaps source addr a3::")
258 # configure SRv6 Policy
259 # Note: segment list order: first -> last
260 sr_policy = VppSRv6Policy(
263 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
264 weight=1, fib_table=0,
265 segments=['a4::', 'a5::', 'a6::c7'],
267 sr_policy.add_vpp_config()
268 self.sr_policy = sr_policy
270 # log the sr policies
271 self.logger.info(self.vapi.cli("show sr policies"))
273 # steer IPv6 traffic to a7::/64 into SRv6 Policy
274 # use the bsid of the above self.sr_policy
275 pol_steering = VppSRv6Steering(
277 bsid=self.sr_policy.bsid,
278 prefix="a7::", mask_width=64,
279 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
280 sr_policy_index=0, table_id=0,
282 pol_steering.add_vpp_config()
284 # log the sr steering policies
285 self.logger.info(self.vapi.cli("show sr steering policies"))
288 count = len(self.pg_packet_sizes)
289 dst_inner = 'a7::1234'
292 # create IPv6 packets without SRH
293 packet_header = self.create_packet_header_IPv6(dst_inner)
294 # create traffic stream pg0->pg1
295 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
296 self.pg_packet_sizes, count))
298 # create IPv6 packets with SRH
299 # packets with segments-left 1, active segment a7::
300 packet_header = self.create_packet_header_IPv6_SRH(
301 sidlist=['a8::', 'a7::', 'a6::'],
303 # create traffic stream pg0->pg1
304 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
305 self.pg_packet_sizes, count))
307 # send packets and verify received packets
308 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
309 self.compare_rx_tx_packet_T_Insert)
311 # log the localsid counters
312 self.logger.info(self.vapi.cli("show sr localsid"))
315 pol_steering.remove_vpp_config()
316 self.logger.info(self.vapi.cli("show sr steering policies"))
319 self.sr_policy.remove_vpp_config()
320 self.logger.info(self.vapi.cli("show sr policies"))
326 self.teardown_interfaces()
328 @unittest.skipUnless(0, "PC to fix")
329 def test_SRv6_T_Encaps_IPv4(self):
330 """ Test SRv6 Transit.Encaps behavior for IPv4.
332 # send traffic to one destination interface
333 # source interface is IPv4 only
334 # destination interface is IPv6 only
335 self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
337 # configure FIB entries
338 route = VppIpRoute(self, "a4::", 64,
339 [VppRoutePath(self.pg1.remote_ip6,
340 self.pg1.sw_if_index)])
341 route.add_vpp_config()
343 # configure encaps IPv6 source address
344 # needs to be done before SR Policy config
346 self.vapi.cli("set sr encaps source addr a3::")
349 # configure SRv6 Policy
350 # Note: segment list order: first -> last
351 sr_policy = VppSRv6Policy(
354 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
355 weight=1, fib_table=0,
356 segments=['a4::', 'a5::', 'a6::c7'],
358 sr_policy.add_vpp_config()
359 self.sr_policy = sr_policy
361 # log the sr policies
362 self.logger.info(self.vapi.cli("show sr policies"))
364 # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
365 # use the bsid of the above self.sr_policy
366 pol_steering = VppSRv6Steering(
368 bsid=self.sr_policy.bsid,
369 prefix="7.1.1.0", mask_width=24,
370 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
371 sr_policy_index=0, table_id=0,
373 pol_steering.add_vpp_config()
375 # log the sr steering policies
376 self.logger.info(self.vapi.cli("show sr steering policies"))
379 count = len(self.pg_packet_sizes)
380 dst_inner = '7.1.1.123'
383 # create IPv4 packets
384 packet_header = self.create_packet_header_IPv4(dst_inner)
385 # create traffic stream pg0->pg1
386 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
387 self.pg_packet_sizes, count))
389 # send packets and verify received packets
390 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
391 self.compare_rx_tx_packet_T_Encaps_IPv4)
393 # log the localsid counters
394 self.logger.info(self.vapi.cli("show sr localsid"))
397 pol_steering.remove_vpp_config()
398 self.logger.info(self.vapi.cli("show sr steering policies"))
401 self.sr_policy.remove_vpp_config()
402 self.logger.info(self.vapi.cli("show sr policies"))
408 self.teardown_interfaces()
410 @unittest.skip("VPP crashes after running this test")
411 def test_SRv6_T_Encaps_L2(self):
412 """ Test SRv6 Transit.Encaps behavior for L2.
414 # send traffic to one destination interface
415 # source interface is IPv4 only TODO?
416 # destination interface is IPv6 only
417 self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
419 # configure FIB entries
420 route = VppIpRoute(self, "a4::", 64,
421 [VppRoutePath(self.pg1.remote_ip6,
422 self.pg1.sw_if_index)])
423 route.add_vpp_config()
425 # configure encaps IPv6 source address
426 # needs to be done before SR Policy config
428 self.vapi.cli("set sr encaps source addr a3::")
431 # configure SRv6 Policy
432 # Note: segment list order: first -> last
433 sr_policy = VppSRv6Policy(
436 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
437 weight=1, fib_table=0,
438 segments=['a4::', 'a5::', 'a6::c7'],
440 sr_policy.add_vpp_config()
441 self.sr_policy = sr_policy
443 # log the sr policies
444 self.logger.info(self.vapi.cli("show sr policies"))
446 # steer L2 traffic into SRv6 Policy
447 # use the bsid of the above self.sr_policy
448 pol_steering = VppSRv6Steering(
450 bsid=self.sr_policy.bsid,
451 prefix="::", mask_width=0,
452 traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
453 sr_policy_index=0, table_id=0,
454 sw_if_index=self.pg0.sw_if_index)
455 pol_steering.add_vpp_config()
457 # log the sr steering policies
458 self.logger.info(self.vapi.cli("show sr steering policies"))
461 count = len(self.pg_packet_sizes)
464 # create L2 packets without dot1q header
465 packet_header = self.create_packet_header_L2()
466 # create traffic stream pg0->pg1
467 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
468 self.pg_packet_sizes, count))
470 # create L2 packets with dot1q header
471 packet_header = self.create_packet_header_L2(vlan=123)
472 # create traffic stream pg0->pg1
473 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
474 self.pg_packet_sizes, count))
476 # send packets and verify received packets
477 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
478 self.compare_rx_tx_packet_T_Encaps_L2)
480 # log the localsid counters
481 self.logger.info(self.vapi.cli("show sr localsid"))
484 pol_steering.remove_vpp_config()
485 self.logger.info(self.vapi.cli("show sr steering policies"))
488 self.sr_policy.remove_vpp_config()
489 self.logger.info(self.vapi.cli("show sr policies"))
495 self.teardown_interfaces()
497 def test_SRv6_End(self):
498 """ Test SRv6 End (without PSP) behavior.
500 # send traffic to one destination interface
501 # source and destination interfaces are IPv6 only
502 self.setup_interfaces(ipv6=[True, True])
504 # configure FIB entries
505 route = VppIpRoute(self, "a4::", 64,
506 [VppRoutePath(self.pg1.remote_ip6,
507 self.pg1.sw_if_index)])
508 route.add_vpp_config()
510 # configure SRv6 localSID End without PSP behavior
511 localsid = VppSRv6LocalSID(
512 self, localsid={'addr': 'A3::0'},
513 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
520 localsid.add_vpp_config()
522 self.logger.debug(self.vapi.cli("show sr localsid"))
524 # create IPv6 packets with SRH (SL=2, SL=1, SL=0)
525 # send one packet per SL value per packet size
526 # SL=0 packet with localSID End with USP needs 2nd SRH
527 count = len(self.pg_packet_sizes)
528 dst_inner = 'a4::1234'
531 # packets with segments-left 2, active segment a3::
532 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
534 sidlist=['a5::', 'a4::', 'a3::'],
536 # create traffic stream pg0->pg1
537 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
538 self.pg_packet_sizes, count))
540 # packets with segments-left 1, active segment a3::
541 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
543 sidlist=['a4::', 'a3::', 'a2::'],
545 # add to traffic stream pg0->pg1
546 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
547 self.pg_packet_sizes, count))
549 # TODO: test behavior with SL=0 packet (needs 2*SRH?)
551 # send packets and verify received packets
552 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
553 self.compare_rx_tx_packet_End)
555 # log the localsid counters
556 self.logger.info(self.vapi.cli("show sr localsid"))
558 # remove SRv6 localSIDs
559 localsid.remove_vpp_config()
565 self.teardown_interfaces()
567 def test_SRv6_End_with_PSP(self):
568 """ Test SRv6 End with PSP behavior.
570 # send traffic to one destination interface
571 # source and destination interfaces are IPv6 only
572 self.setup_interfaces(ipv6=[True, True])
574 # configure FIB entries
575 route = VppIpRoute(self, "a4::", 64,
576 [VppRoutePath(self.pg1.remote_ip6,
577 self.pg1.sw_if_index)])
578 route.add_vpp_config()
580 # configure SRv6 localSID End with PSP behavior
581 localsid = VppSRv6LocalSID(
582 self, localsid={'addr': 'A3::0'},
583 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
590 localsid.add_vpp_config()
592 self.logger.debug(self.vapi.cli("show sr localsid"))
594 # create IPv6 packets with SRH (SL=2, SL=1)
595 # send one packet per SL value per packet size
596 # SL=0 packet with localSID End with PSP is dropped
597 count = len(self.pg_packet_sizes)
598 dst_inner = 'a4::1234'
601 # packets with segments-left 2, active segment a3::
602 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
604 sidlist=['a5::', 'a4::', 'a3::'],
606 # create traffic stream pg0->pg1
607 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
608 self.pg_packet_sizes, count))
610 # packets with segments-left 1, active segment a3::
611 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
613 sidlist=['a4::', 'a3::', 'a2::'],
615 # add to traffic stream pg0->pg1
616 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
617 self.pg_packet_sizes, count))
619 # send packets and verify received packets
620 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
621 self.compare_rx_tx_packet_End_PSP)
623 # log the localsid counters
624 self.logger.info(self.vapi.cli("show sr localsid"))
626 # remove SRv6 localSIDs
627 localsid.remove_vpp_config()
633 self.teardown_interfaces()
635 def test_SRv6_End_X(self):
636 """ Test SRv6 End.X (without PSP) behavior.
638 # create three interfaces (1 source, 2 destinations)
639 # source and destination interfaces are IPv6 only
640 self.setup_interfaces(ipv6=[True, True, True])
642 # configure FIB entries
643 # a4::/64 via pg1 and pg2
644 route = VppIpRoute(self, "a4::", 64,
645 [VppRoutePath(self.pg1.remote_ip6,
646 self.pg1.sw_if_index),
647 VppRoutePath(self.pg2.remote_ip6,
648 self.pg2.sw_if_index)])
649 route.add_vpp_config()
650 self.logger.debug(self.vapi.cli("show ip6 fib"))
652 # configure SRv6 localSID End.X without PSP behavior
653 # End.X points to interface pg1
654 localsid = VppSRv6LocalSID(
655 self, localsid={'addr': 'A3::C4'},
656 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
658 nh_addr6=self.pg1.remote_ip6,
660 sw_if_index=self.pg1.sw_if_index,
663 localsid.add_vpp_config()
665 self.logger.debug(self.vapi.cli("show sr localsid"))
667 # create IPv6 packets with SRH (SL=2, SL=1)
668 # send one packet per SL value per packet size
669 # SL=0 packet with localSID End with PSP is dropped
670 count = len(self.pg_packet_sizes)
671 dst_inner = 'a4::1234'
674 # packets with segments-left 2, active segment a3::c4
675 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
677 sidlist=['a5::', 'a4::', 'a3::c4'],
679 # create traffic stream pg0->pg1
680 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
681 self.pg_packet_sizes, count))
683 # packets with segments-left 1, active segment a3::c4
684 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
686 sidlist=['a4::', 'a3::c4', 'a2::'],
688 # add to traffic stream pg0->pg1
689 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
690 self.pg_packet_sizes, count))
692 # send packets and verify received packets
693 # using same comparison function as End (no PSP)
694 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
695 self.compare_rx_tx_packet_End)
697 # assert nothing was received on the other interface (pg2)
698 self.pg2.assert_nothing_captured("mis-directed packet(s)")
700 # log the localsid counters
701 self.logger.info(self.vapi.cli("show sr localsid"))
703 # remove SRv6 localSIDs
704 localsid.remove_vpp_config()
710 self.teardown_interfaces()
712 def test_SRv6_End_X_with_PSP(self):
713 """ Test SRv6 End.X with PSP behavior.
715 # create three interfaces (1 source, 2 destinations)
716 # source and destination interfaces are IPv6 only
717 self.setup_interfaces(ipv6=[True, True, True])
719 # configure FIB entries
720 # a4::/64 via pg1 and pg2
721 route = VppIpRoute(self, "a4::", 64,
724 self.pg1.sw_if_index),
725 VppRoutePath(self.pg2.remote_ip6,
726 self.pg2.sw_if_index)])
727 route.add_vpp_config()
729 # configure SRv6 localSID End with PSP behavior
730 localsid = VppSRv6LocalSID(
731 self, localsid={'addr': 'A3::C4'},
732 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
734 nh_addr6=self.pg1.remote_ip6,
736 sw_if_index=self.pg1.sw_if_index,
739 localsid.add_vpp_config()
741 self.logger.debug(self.vapi.cli("show sr localsid"))
743 # create IPv6 packets with SRH (SL=2, SL=1)
744 # send one packet per SL value per packet size
745 # SL=0 packet with localSID End with PSP is dropped
746 count = len(self.pg_packet_sizes)
747 dst_inner = 'a4::1234'
750 # packets with segments-left 2, active segment a3::
751 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
753 sidlist=['a5::', 'a4::', 'a3::c4'],
755 # create traffic stream pg0->pg1
756 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
757 self.pg_packet_sizes, count))
759 # packets with segments-left 1, active segment a3::
760 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
762 sidlist=['a4::', 'a3::c4', 'a2::'],
764 # add to traffic stream pg0->pg1
765 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
766 self.pg_packet_sizes, count))
768 # send packets and verify received packets
769 # using same comparison function as End with PSP
770 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
771 self.compare_rx_tx_packet_End_PSP)
773 # assert nothing was received on the other interface (pg2)
774 self.pg2.assert_nothing_captured("mis-directed packet(s)")
776 # log the localsid counters
777 self.logger.info(self.vapi.cli("show sr localsid"))
779 # remove SRv6 localSIDs
780 localsid.remove_vpp_config()
786 self.teardown_interfaces()
788 def test_SRv6_End_DX6(self):
789 """ Test SRv6 End.DX6 behavior.
791 # send traffic to one destination interface
792 # source and destination interfaces are IPv6 only
793 self.setup_interfaces(ipv6=[True, True])
795 # configure SRv6 localSID End.DX6 behavior
796 localsid = VppSRv6LocalSID(
797 self, localsid={'addr': 'A3::C4'},
798 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
800 nh_addr6=self.pg1.remote_ip6,
802 sw_if_index=self.pg1.sw_if_index,
805 localsid.add_vpp_config()
807 self.logger.debug(self.vapi.cli("show sr localsid"))
809 # create IPv6 packets with SRH (SL=0)
810 # send one packet per packet size
811 count = len(self.pg_packet_sizes)
812 dst_inner = 'a4::1234' # inner header destination address
815 # packets with SRH, segments-left 0, active segment a3::c4
816 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
818 sidlist=['a3::c4', 'a2::', 'a1::'],
820 # add to traffic stream pg0->pg1
821 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
822 self.pg_packet_sizes, count))
824 # packets without SRH, IPv6 in IPv6
825 # outer IPv6 dest addr is the localsid End.DX6
826 packet_header = self.create_packet_header_IPv6_IPv6(
829 # add to traffic stream pg0->pg1
830 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
831 self.pg_packet_sizes, count))
833 # send packets and verify received packets
834 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
835 self.compare_rx_tx_packet_End_DX6)
837 # log the localsid counters
838 self.logger.info(self.vapi.cli("show sr localsid"))
840 # remove SRv6 localSIDs
841 localsid.remove_vpp_config()
844 self.teardown_interfaces()
846 def test_SRv6_End_DT6(self):
847 """ Test SRv6 End.DT6 behavior.
849 # create three interfaces (1 source, 2 destinations)
850 # all interfaces are IPv6 only
851 # source interface in global FIB (0)
852 # destination interfaces in global and vrf
854 ipt = VppIpTable(self, vrf_1, is_ip6=True)
856 self.setup_interfaces(ipv6=[True, True, True],
857 ipv6_table_id=[0, 0, vrf_1])
859 # configure FIB entries
860 # a4::/64 is reachable
861 # via pg1 in table 0 (global)
862 # and via pg2 in table vrf_1
863 route0 = VppIpRoute(self, "a4::", 64,
864 [VppRoutePath(self.pg1.remote_ip6,
865 self.pg1.sw_if_index,
868 route0.add_vpp_config()
869 route1 = VppIpRoute(self, "a4::", 64,
870 [VppRoutePath(self.pg2.remote_ip6,
871 self.pg2.sw_if_index,
874 route1.add_vpp_config()
875 self.logger.debug(self.vapi.cli("show ip6 fib"))
877 # configure SRv6 localSID End.DT6 behavior
879 # fib_table: where the localsid is installed
880 # sw_if_index: in T-variants of localsid this is the vrf table_id
881 localsid = VppSRv6LocalSID(
882 self, localsid={'addr': 'A3::C4'},
883 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
890 localsid.add_vpp_config()
892 self.logger.debug(self.vapi.cli("show sr localsid"))
894 # create IPv6 packets with SRH (SL=0)
895 # send one packet per packet size
896 count = len(self.pg_packet_sizes)
897 dst_inner = 'a4::1234' # inner header destination address
900 # packets with SRH, segments-left 0, active segment a3::c4
901 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
903 sidlist=['a3::c4', 'a2::', 'a1::'],
905 # add to traffic stream pg0->pg1
906 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
907 self.pg_packet_sizes, count))
909 # packets without SRH, IPv6 in IPv6
910 # outer IPv6 dest addr is the localsid End.DT6
911 packet_header = self.create_packet_header_IPv6_IPv6(
914 # add to traffic stream pg0->pg1
915 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
916 self.pg_packet_sizes, count))
918 # send packets and verify received packets
919 # using same comparison function as End.DX6
920 self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
921 self.compare_rx_tx_packet_End_DX6)
923 # assert nothing was received on the other interface (pg2)
924 self.pg1.assert_nothing_captured("mis-directed packet(s)")
926 # log the localsid counters
927 self.logger.info(self.vapi.cli("show sr localsid"))
929 # remove SRv6 localSIDs
930 localsid.remove_vpp_config()
936 self.teardown_interfaces()
938 def test_SRv6_End_DX4(self):
939 """ Test SRv6 End.DX4 behavior.
941 # send traffic to one destination interface
942 # source interface is IPv6 only
943 # destination interface is IPv4 only
944 self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
946 # configure SRv6 localSID End.DX4 behavior
947 localsid = VppSRv6LocalSID(
948 self, localsid={'addr': 'A3::C4'},
949 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
950 nh_addr4=self.pg1.remote_ip4,
953 sw_if_index=self.pg1.sw_if_index,
956 localsid.add_vpp_config()
958 self.logger.debug(self.vapi.cli("show sr localsid"))
960 # send one packet per packet size
961 count = len(self.pg_packet_sizes)
962 dst_inner = '4.1.1.123' # inner header destination address
965 # packets with SRH, segments-left 0, active segment a3::c4
966 packet_header = self.create_packet_header_IPv6_SRH_IPv4(
968 sidlist=['a3::c4', 'a2::', 'a1::'],
970 # add to traffic stream pg0->pg1
971 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
972 self.pg_packet_sizes, count))
974 # packets without SRH, IPv4 in IPv6
975 # outer IPv6 dest addr is the localsid End.DX4
976 packet_header = self.create_packet_header_IPv6_IPv4(
979 # add to traffic stream pg0->pg1
980 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
981 self.pg_packet_sizes, count))
983 # send packets and verify received packets
984 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
985 self.compare_rx_tx_packet_End_DX4)
987 # log the localsid counters
988 self.logger.info(self.vapi.cli("show sr localsid"))
990 # remove SRv6 localSIDs
991 localsid.remove_vpp_config()
994 self.teardown_interfaces()
996 def test_SRv6_End_DT4(self):
997 """ Test SRv6 End.DT4 behavior.
999 # create three interfaces (1 source, 2 destinations)
1000 # source interface is IPv6-only
1001 # destination interfaces are IPv4 only
1002 # source interface in global FIB (0)
1003 # destination interfaces in global and vrf
1005 ipt = VppIpTable(self, vrf_1)
1006 ipt.add_vpp_config()
1007 self.setup_interfaces(ipv6=[True, False, False],
1008 ipv4=[False, True, True],
1009 ipv6_table_id=[0, 0, 0],
1010 ipv4_table_id=[0, 0, vrf_1])
1012 # configure FIB entries
1013 # 4.1.1.0/24 is reachable
1014 # via pg1 in table 0 (global)
1015 # and via pg2 in table vrf_1
1016 route0 = VppIpRoute(self, "4.1.1.0", 24,
1017 [VppRoutePath(self.pg1.remote_ip4,
1018 self.pg1.sw_if_index,
1021 route0.add_vpp_config()
1022 route1 = VppIpRoute(self, "4.1.1.0", 24,
1023 [VppRoutePath(self.pg2.remote_ip4,
1024 self.pg2.sw_if_index,
1025 nh_table_id=vrf_1)],
1027 route1.add_vpp_config()
1028 self.logger.debug(self.vapi.cli("show ip fib"))
1030 # configure SRv6 localSID End.DT6 behavior
1032 # fib_table: where the localsid is installed
1033 # sw_if_index: in T-variants of localsid: vrf table_id
1034 localsid = VppSRv6LocalSID(
1035 self, localsid={'addr': 'A3::C4'},
1036 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
1043 localsid.add_vpp_config()
1045 self.logger.debug(self.vapi.cli("show sr localsid"))
1047 # create IPv6 packets with SRH (SL=0)
1048 # send one packet per packet size
1049 count = len(self.pg_packet_sizes)
1050 dst_inner = '4.1.1.123' # inner header destination address
1053 # packets with SRH, segments-left 0, active segment a3::c4
1054 packet_header = self.create_packet_header_IPv6_SRH_IPv4(
1056 sidlist=['a3::c4', 'a2::', 'a1::'],
1058 # add to traffic stream pg0->pg1
1059 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
1060 self.pg_packet_sizes, count))
1062 # packets without SRH, IPv6 in IPv6
1063 # outer IPv6 dest addr is the localsid End.DX4
1064 packet_header = self.create_packet_header_IPv6_IPv4(
1067 # add to traffic stream pg0->pg1
1068 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
1069 self.pg_packet_sizes, count))
1071 # send packets and verify received packets
1072 # using same comparison function as End.DX4
1073 self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
1074 self.compare_rx_tx_packet_End_DX4)
1076 # assert nothing was received on the other interface (pg2)
1077 self.pg1.assert_nothing_captured("mis-directed packet(s)")
1079 # log the localsid counters
1080 self.logger.info(self.vapi.cli("show sr localsid"))
1082 # remove SRv6 localSIDs
1083 localsid.remove_vpp_config()
1085 # remove FIB entries
1088 # cleanup interfaces
1089 self.teardown_interfaces()
1091 def test_SRv6_End_DX2(self):
1092 """ Test SRv6 End.DX2 behavior.
1094 # send traffic to one destination interface
1095 # source interface is IPv6 only
1096 self.setup_interfaces(ipv6=[True, False], ipv4=[False, False])
1098 # configure SRv6 localSID End.DX2 behavior
1099 localsid = VppSRv6LocalSID(
1100 self, localsid={'addr': 'A3::C4'},
1101 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
1105 sw_if_index=self.pg1.sw_if_index,
1108 localsid.add_vpp_config()
1110 self.logger.debug(self.vapi.cli("show sr localsid"))
1112 # send one packet per packet size
1113 count = len(self.pg_packet_sizes)
1116 # packets with SRH, segments-left 0, active segment a3::c4
1117 # L2 has no dot1q header
1118 packet_header = self.create_packet_header_IPv6_SRH_L2(
1119 sidlist=['a3::c4', 'a2::', 'a1::'],
1122 # add to traffic stream pg0->pg1
1123 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1124 self.pg_packet_sizes, count))
1126 # packets with SRH, segments-left 0, active segment a3::c4
1127 # L2 has dot1q header
1128 packet_header = self.create_packet_header_IPv6_SRH_L2(
1129 sidlist=['a3::c4', 'a2::', 'a1::'],
1132 # add to traffic stream pg0->pg1
1133 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1134 self.pg_packet_sizes, count))
1136 # packets without SRH, L2 in IPv6
1137 # outer IPv6 dest addr is the localsid End.DX2
1138 # L2 has no dot1q header
1139 packet_header = self.create_packet_header_IPv6_L2(
1142 # add to traffic stream pg0->pg1
1143 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1144 self.pg_packet_sizes, count))
1146 # packets without SRH, L2 in IPv6
1147 # outer IPv6 dest addr is the localsid End.DX2
1148 # L2 has dot1q header
1149 packet_header = self.create_packet_header_IPv6_L2(
1152 # add to traffic stream pg0->pg1
1153 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
1154 self.pg_packet_sizes, count))
1156 # send packets and verify received packets
1157 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
1158 self.compare_rx_tx_packet_End_DX2)
1160 # log the localsid counters
1161 self.logger.info(self.vapi.cli("show sr localsid"))
1163 # remove SRv6 localSIDs
1164 localsid.remove_vpp_config()
1166 # cleanup interfaces
1167 self.teardown_interfaces()
1169 @unittest.skipUnless(0, "PC to fix")
1170 def test_SRv6_T_Insert_Classifier(self):
1171 """ Test SRv6 Transit.Insert behavior (IPv6 only).
1172 steer packets using the classifier
1174 # send traffic to one destination interface
1175 # source and destination are IPv6 only
1176 self.setup_interfaces(ipv6=[False, False, False, True, True])
1178 # configure FIB entries
1179 route = VppIpRoute(self, "a4::", 64,
1181 self.pg4.remote_ip6,
1182 self.pg4.sw_if_index)])
1183 route.add_vpp_config()
1185 # configure encaps IPv6 source address
1186 # needs to be done before SR Policy config
1188 self.vapi.cli("set sr encaps source addr a3::")
1191 # configure SRv6 Policy
1192 # Note: segment list order: first -> last
1193 sr_policy = VppSRv6Policy(
1196 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
1197 weight=1, fib_table=0,
1198 segments=['a4::', 'a5::', 'a6::c7'],
1200 sr_policy.add_vpp_config()
1201 self.sr_policy = sr_policy
1203 # log the sr policies
1204 self.logger.info(self.vapi.cli("show sr policies"))
1206 # add classify table
1207 # mask on dst ip address prefix a7::/8
1208 mask = '{!s:0<16}'.format('ff')
1209 r = self.vapi.classify_add_del_table(
1211 binascii.unhexlify(mask),
1212 match_n_vectors=(len(mask) - 1) // 32 + 1,
1213 current_data_flag=1,
1214 skip_n_vectors=2) # data offset
1215 self.assertIsNotNone(r, 'No response msg for add_del_table')
1216 table_index = r.new_table_index
1218 # add the source routing node as a ip6 inacl netxt node
1219 r = self.vapi.add_node_next('ip6-inacl',
1220 'sr-pl-rewrite-insert')
1221 inacl_next_node_index = r.node_index
1223 match = '{!s:0<16}'.format('a7')
1224 r = self.vapi.classify_add_del_session(
1227 binascii.unhexlify(match),
1228 hit_next_index=inacl_next_node_index,
1230 metadata=0) # sr policy index
1231 self.assertIsNotNone(r, 'No response msg for add_del_session')
1233 # log the classify table used in the steering policy
1234 self.logger.info(self.vapi.cli("show classify table"))
1236 r = self.vapi.input_acl_set_interface(
1238 sw_if_index=self.pg3.sw_if_index,
1239 ip6_table_index=table_index)
1240 self.assertIsNotNone(r,
1241 'No response msg for input_acl_set_interface')
1244 self.logger.info(self.vapi.cli("show inacl type ip6"))
1247 count = len(self.pg_packet_sizes)
1248 dst_inner = 'a7::1234'
1251 # create IPv6 packets without SRH
1252 packet_header = self.create_packet_header_IPv6(dst_inner)
1253 # create traffic stream pg3->pg4
1254 pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
1255 self.pg_packet_sizes, count))
1257 # create IPv6 packets with SRH
1258 # packets with segments-left 1, active segment a7::
1259 packet_header = self.create_packet_header_IPv6_SRH(
1260 sidlist=['a8::', 'a7::', 'a6::'],
1262 # create traffic stream pg3->pg4
1263 pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
1264 self.pg_packet_sizes, count))
1266 # send packets and verify received packets
1267 self.send_and_verify_pkts(self.pg3, pkts, self.pg4,
1268 self.compare_rx_tx_packet_T_Insert)
1270 # remove the interface l2 input feature
1271 r = self.vapi.input_acl_set_interface(
1273 sw_if_index=self.pg3.sw_if_index,
1274 ip6_table_index=table_index)
1275 self.assertIsNotNone(r,
1276 'No response msg for input_acl_set_interface')
1278 # log the ip6 inacl after cleaning
1279 self.logger.info(self.vapi.cli("show inacl type ip6"))
1281 # log the localsid counters
1282 self.logger.info(self.vapi.cli("show sr localsid"))
1284 # remove classifier SR steering
1285 # classifier_steering.remove_vpp_config()
1286 self.logger.info(self.vapi.cli("show sr steering policies"))
1288 # remove SR Policies
1289 self.sr_policy.remove_vpp_config()
1290 self.logger.info(self.vapi.cli("show sr policies"))
1292 # remove classify session and table
1293 r = self.vapi.classify_add_del_session(
1296 binascii.unhexlify(match))
1297 self.assertIsNotNone(r, 'No response msg for add_del_session')
1299 r = self.vapi.classify_add_del_table(
1301 binascii.unhexlify(mask),
1302 table_index=table_index)
1303 self.assertIsNotNone(r, 'No response msg for add_del_table')
1305 self.logger.info(self.vapi.cli("show classify table"))
1307 # remove FIB entries
1310 # cleanup interfaces
1311 self.teardown_interfaces()
1313 def compare_rx_tx_packet_T_Encaps(self, tx_pkt, rx_pkt):
1314 """ Compare input and output packet after passing T.Encaps
1316 :param tx_pkt: transmitted packet
1317 :param rx_pkt: received packet
1319 # T.Encaps updates the headers as follows:
1320 # SR Policy seglist (S3, S2, S1)
1321 # SR Policy source C
1324 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(A, B2)
1326 # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
1327 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(a, B2)SRH(B3, B2, B1; SL=1)
1329 # get first (outer) IPv6 header of rx'ed packet
1330 rx_ip = rx_pkt.getlayer(IPv6)
1333 tx_ip = tx_pkt.getlayer(IPv6)
1335 # expected segment-list
1336 seglist = self.sr_policy.segments
1337 # reverse list to get order as in SRH
1338 tx_seglist = seglist[::-1]
1340 # get source address of SR Policy
1341 sr_policy_source = self.sr_policy.source
1343 # rx'ed packet should have SRH
1344 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1346 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1348 # received ip.src should be equal to SR Policy source
1349 self.assertEqual(rx_ip.src, sr_policy_source)
1350 # received ip.dst should be equal to expected sidlist[lastentry]
1351 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1352 # rx'ed seglist should be equal to expected seglist
1353 self.assertEqual(rx_srh.addresses, tx_seglist)
1354 # segleft should be equal to size expected seglist-1
1355 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1356 # segleft should be equal to lastentry
1357 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1359 # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
1360 # except for the hop-limit field
1361 # -> update tx'ed hlim to the expected hlim
1362 tx_ip.hlim = tx_ip.hlim - 1
1364 self.assertEqual(rx_srh.payload, tx_ip)
1366 self.logger.debug("packet verification: SUCCESS")
1368 def compare_rx_tx_packet_T_Encaps_IPv4(self, tx_pkt, rx_pkt):
1369 """ Compare input and output packet after passing T.Encaps for IPv4
1371 :param tx_pkt: transmitted packet
1372 :param rx_pkt: received packet
1374 # T.Encaps for IPv4 updates the headers as follows:
1375 # SR Policy seglist (S3, S2, S1)
1376 # SR Policy source C
1379 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv4(A, B2)
1381 # get first (outer) IPv6 header of rx'ed packet
1382 rx_ip = rx_pkt.getlayer(IPv6)
1385 tx_ip = tx_pkt.getlayer(IP)
1387 # expected segment-list
1388 seglist = self.sr_policy.segments
1389 # reverse list to get order as in SRH
1390 tx_seglist = seglist[::-1]
1392 # get source address of SR Policy
1393 sr_policy_source = self.sr_policy.source
1395 # checks common to cases tx with and without SRH
1396 # rx'ed packet should have SRH and IPv4 header
1397 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1398 self.assertTrue(rx_ip.payload.haslayer(IP))
1400 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1402 # received ip.src should be equal to SR Policy source
1403 self.assertEqual(rx_ip.src, sr_policy_source)
1404 # received ip.dst should be equal to sidlist[lastentry]
1405 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1406 # rx'ed seglist should be equal to seglist
1407 self.assertEqual(rx_srh.addresses, tx_seglist)
1408 # segleft should be equal to size seglist-1
1409 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1410 # segleft should be equal to lastentry
1411 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1413 # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
1414 # except for the ttl field and ip checksum
1415 # -> adjust tx'ed ttl to expected ttl
1416 tx_ip.ttl = tx_ip.ttl - 1
1417 # -> set tx'ed ip checksum to None and let scapy recompute
1419 # read back the pkt (with str()) to force computing these fields
1420 # probably other ways to accomplish this are possible
1421 tx_ip = IP(scapy.compat.raw(tx_ip))
1423 self.assertEqual(rx_srh.payload, tx_ip)
1425 self.logger.debug("packet verification: SUCCESS")
1427 def compare_rx_tx_packet_T_Encaps_L2(self, tx_pkt, rx_pkt):
1428 """ Compare input and output packet after passing T.Encaps for L2
1430 :param tx_pkt: transmitted packet
1431 :param rx_pkt: received packet
1433 # T.Encaps for L2 updates the headers as follows:
1434 # SR Policy seglist (S3, S2, S1)
1435 # SR Policy source C
1438 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)L2
1440 # get first (outer) IPv6 header of rx'ed packet
1441 rx_ip = rx_pkt.getlayer(IPv6)
1444 tx_ether = tx_pkt.getlayer(Ether)
1446 # expected segment-list
1447 seglist = self.sr_policy.segments
1448 # reverse list to get order as in SRH
1449 tx_seglist = seglist[::-1]
1451 # get source address of SR Policy
1452 sr_policy_source = self.sr_policy.source
1454 # rx'ed packet should have SRH
1455 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1457 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1459 # received ip.src should be equal to SR Policy source
1460 self.assertEqual(rx_ip.src, sr_policy_source)
1461 # received ip.dst should be equal to sidlist[lastentry]
1462 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1463 # rx'ed seglist should be equal to seglist
1464 self.assertEqual(rx_srh.addresses, tx_seglist)
1465 # segleft should be equal to size seglist-1
1466 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1467 # segleft should be equal to lastentry
1468 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1469 # nh should be "No Next Header" (59)
1470 self.assertEqual(rx_srh.nh, 59)
1472 # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
1473 self.assertEqual(Ether(scapy.compat.raw(rx_srh.payload)), tx_ether)
1475 self.logger.debug("packet verification: SUCCESS")
1477 def compare_rx_tx_packet_T_Insert(self, tx_pkt, rx_pkt):
1478 """ Compare input and output packet after passing T.Insert
1480 :param tx_pkt: transmitted packet
1481 :param rx_pkt: received packet
1483 # T.Insert updates the headers as follows:
1486 # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)
1488 # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
1489 # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)SRH(B3, B2, B1; SL=1)
1491 # get first (outer) IPv6 header of rx'ed packet
1492 rx_ip = rx_pkt.getlayer(IPv6)
1497 rx_udp = rx_pkt[UDP]
1499 tx_ip = tx_pkt.getlayer(IPv6)
1502 # some packets have been tx'ed with an SRH, some without it
1503 # get SRH if tx'ed packet has it
1504 if tx_pkt.haslayer(IPv6ExtHdrSegmentRouting):
1505 tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1506 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1507 tx_udp = tx_pkt[UDP]
1509 # expected segment-list (make copy of SR Policy segment list)
1510 seglist = self.sr_policy.segments[:]
1511 # expected seglist has initial dest addr as last segment
1512 seglist.append(tx_ip.dst)
1513 # reverse list to get order as in SRH
1514 tx_seglist = seglist[::-1]
1516 # get source address of SR Policy
1517 sr_policy_source = self.sr_policy.source
1519 # checks common to cases tx with and without SRH
1520 # rx'ed packet should have SRH and only one IPv6 header
1521 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1522 self.assertFalse(rx_ip.payload.haslayer(IPv6))
1524 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1526 # rx'ed ip.src should be equal to tx'ed ip.src
1527 self.assertEqual(rx_ip.src, tx_ip.src)
1528 # rx'ed ip.dst should be equal to sidlist[lastentry]
1529 self.assertEqual(rx_ip.dst, tx_seglist[-1])
1531 # rx'ed seglist should be equal to expected seglist
1532 self.assertEqual(rx_srh.addresses, tx_seglist)
1533 # segleft should be equal to size(expected seglist)-1
1534 self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
1535 # segleft should be equal to lastentry
1536 self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
1538 if tx_srh: # packet was tx'ed with SRH
1539 # packet should have 2nd SRH
1540 self.assertTrue(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
1542 rx_srh2 = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting, 2)
1544 # rx'ed srh2.addresses should be equal to tx'ed srh.addresses
1545 self.assertEqual(rx_srh2.addresses, tx_srh.addresses)
1546 # rx'ed srh2.segleft should be equal to tx'ed srh.segleft
1547 self.assertEqual(rx_srh2.segleft, tx_srh.segleft)
1548 # rx'ed srh2.lastentry should be equal to tx'ed srh.lastentry
1549 self.assertEqual(rx_srh2.lastentry, tx_srh.lastentry)
1551 else: # packet was tx'ed without SRH
1552 # rx packet should have no other SRH
1553 self.assertFalse(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
1555 # UDP layer should be unchanged
1556 self.assertEqual(rx_udp, tx_udp)
1558 self.logger.debug("packet verification: SUCCESS")
1560 def compare_rx_tx_packet_End(self, tx_pkt, rx_pkt):
1561 """ Compare input and output packet after passing End (without PSP)
1563 :param tx_pkt: transmitted packet
1564 :param rx_pkt: received packet
1566 # End (no PSP) updates the headers as follows:
1568 # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
1569 # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
1571 # get first (outer) IPv6 header of rx'ed packet
1572 rx_ip = rx_pkt.getlayer(IPv6)
1575 rx_udp = rx_pkt[UDP]
1577 tx_ip = tx_pkt.getlayer(IPv6)
1578 # we know the packet has been tx'ed
1579 # with an inner IPv6 header and an SRH
1580 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1581 tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1582 tx_udp = tx_pkt[UDP]
1584 # common checks, regardless of tx segleft value
1585 # rx'ed packet should have 2nd IPv6 header
1586 self.assertTrue(rx_ip.payload.haslayer(IPv6))
1587 # get second (inner) IPv6 header
1588 rx_ip2 = rx_pkt.getlayer(IPv6, 2)
1590 if tx_ip.segleft > 0:
1591 # SRH should NOT have been popped:
1592 # End SID without PSP does not pop SRH if segleft>0
1593 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1594 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1596 # received ip.src should be equal to expected ip.src
1597 self.assertEqual(rx_ip.src, tx_ip.src)
1598 # sidlist should be unchanged
1599 self.assertEqual(rx_srh.addresses, tx_srh.addresses)
1600 # segleft should have been decremented
1601 self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
1602 # received ip.dst should be equal to sidlist[segleft]
1603 self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
1604 # lastentry should be unchanged
1605 self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
1606 # inner IPv6 packet (ip2) should be unchanged
1607 self.assertEqual(rx_ip2.src, tx_ip2.src)
1608 self.assertEqual(rx_ip2.dst, tx_ip2.dst)
1609 # else: # tx_ip.segleft == 0
1610 # TODO: Does this work with 2 SRHs in ingress packet?
1612 # UDP layer should be unchanged
1613 self.assertEqual(rx_udp, tx_udp)
1615 self.logger.debug("packet verification: SUCCESS")
1617 def compare_rx_tx_packet_End_PSP(self, tx_pkt, rx_pkt):
1618 """ Compare input and output packet after passing End with PSP
1620 :param tx_pkt: transmitted packet
1621 :param rx_pkt: received packet
1623 # End (PSP) updates the headers as follows:
1624 # IPv6 + SRH (SL>1):
1625 # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
1626 # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
1627 # IPv6 + SRH (SL=1):
1628 # in: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
1631 # get first (outer) IPv6 header of rx'ed packet
1632 rx_ip = rx_pkt.getlayer(IPv6)
1635 rx_udp = rx_pkt[UDP]
1637 tx_ip = tx_pkt.getlayer(IPv6)
1638 # we know the packet has been tx'ed
1639 # with an inner IPv6 header and an SRH
1640 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1641 tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1642 tx_udp = tx_pkt[UDP]
1644 # common checks, regardless of tx segleft value
1645 self.assertTrue(rx_ip.payload.haslayer(IPv6))
1646 rx_ip2 = rx_pkt.getlayer(IPv6, 2)
1647 # inner IPv6 packet (ip2) should be unchanged
1648 self.assertEqual(rx_ip2.src, tx_ip2.src)
1649 self.assertEqual(rx_ip2.dst, tx_ip2.dst)
1651 if tx_ip.segleft > 1:
1652 # SRH should NOT have been popped:
1653 # End SID with PSP does not pop SRH if segleft>1
1654 # rx'ed packet should have SRH
1655 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1656 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1658 # received ip.src should be equal to expected ip.src
1659 self.assertEqual(rx_ip.src, tx_ip.src)
1660 # sidlist should be unchanged
1661 self.assertEqual(rx_srh.addresses, tx_srh.addresses)
1662 # segleft should have been decremented
1663 self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
1664 # received ip.dst should be equal to sidlist[segleft]
1665 self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
1666 # lastentry should be unchanged
1667 self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
1669 else: # tx_ip.segleft <= 1
1670 # SRH should have been popped:
1671 # End SID with PSP and segleft=1 pops SRH
1672 # the two IPv6 headers are still present
1673 # outer IPv6 header has DA == last segment of popped SRH
1674 # SRH should not be present
1675 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1676 # outer IPv6 header ip.src should be equal to tx'ed ip.src
1677 self.assertEqual(rx_ip.src, tx_ip.src)
1678 # outer IPv6 header ip.dst should be = to tx'ed sidlist[segleft-1]
1679 self.assertEqual(rx_ip.dst, tx_srh.addresses[tx_srh.segleft-1])
1681 # UDP layer should be unchanged
1682 self.assertEqual(rx_udp, tx_udp)
1684 self.logger.debug("packet verification: SUCCESS")
1686 def compare_rx_tx_packet_End_DX6(self, tx_pkt, rx_pkt):
1687 """ Compare input and output packet after passing End.DX6
1689 :param tx_pkt: transmitted packet
1690 :param rx_pkt: received packet
1692 # End.DX6 updates the headers as follows:
1693 # IPv6 + SRH (SL=0):
1694 # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv6(B, D)
1697 # in: IPv6(A, S3)IPv6(B, D)
1700 # get first (outer) IPv6 header of rx'ed packet
1701 rx_ip = rx_pkt.getlayer(IPv6)
1703 tx_ip = tx_pkt.getlayer(IPv6)
1704 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1706 # verify if rx'ed packet has no SRH
1707 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1709 # the whole rx_ip pkt should be equal to tx_ip2
1710 # except for the hlim field
1711 # -> adjust tx'ed hlim to expected hlim
1712 tx_ip2.hlim = tx_ip2.hlim - 1
1714 self.assertEqual(rx_ip, tx_ip2)
1716 self.logger.debug("packet verification: SUCCESS")
1718 def compare_rx_tx_packet_End_DX4(self, tx_pkt, rx_pkt):
1719 """ Compare input and output packet after passing End.DX4
1721 :param tx_pkt: transmitted packet
1722 :param rx_pkt: received packet
1724 # End.DX4 updates the headers as follows:
1725 # IPv6 + SRH (SL=0):
1726 # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv4(B, D)
1729 # in: IPv6(A, S3)IPv4(B, D)
1732 # get IPv4 header of rx'ed packet
1733 rx_ip = rx_pkt.getlayer(IP)
1735 tx_ip = tx_pkt.getlayer(IPv6)
1736 tx_ip2 = tx_pkt.getlayer(IP)
1738 # verify if rx'ed packet has no SRH
1739 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1741 # the whole rx_ip pkt should be equal to tx_ip2
1742 # except for the ttl field and ip checksum
1743 # -> adjust tx'ed ttl to expected ttl
1744 tx_ip2.ttl = tx_ip2.ttl - 1
1745 # -> set tx'ed ip checksum to None and let scapy recompute
1746 tx_ip2.chksum = None
1747 # read back the pkt (with str()) to force computing these fields
1748 # probably other ways to accomplish this are possible
1749 tx_ip2 = IP(scapy.compat.raw(tx_ip2))
1751 self.assertEqual(rx_ip, tx_ip2)
1753 self.logger.debug("packet verification: SUCCESS")
1755 def compare_rx_tx_packet_End_DX2(self, tx_pkt, rx_pkt):
1756 """ Compare input and output packet after passing End.DX2
1758 :param tx_pkt: transmitted packet
1759 :param rx_pkt: received packet
1761 # End.DX2 updates the headers as follows:
1762 # IPv6 + SRH (SL=0):
1763 # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)L2
1769 # get IPv4 header of rx'ed packet
1770 rx_eth = rx_pkt.getlayer(Ether)
1772 tx_ip = tx_pkt.getlayer(IPv6)
1773 # we can't just get the 2nd Ether layer
1774 # get the Raw content and dissect it as Ether
1775 tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw]))
1777 # verify if rx'ed packet has no SRH
1778 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1780 # the whole rx_eth pkt should be equal to tx_eth1
1781 self.assertEqual(rx_eth, tx_eth1)
1783 self.logger.debug("packet verification: SUCCESS")
1785 def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
1787 """Create SRv6 input packet stream for defined interface.
1789 :param VppInterface src_if: Interface to create packet stream for
1790 :param VppInterface dst_if: destination interface of packet stream
1791 :param packet_header: Layer3 scapy packet headers,
1792 L2 is added when not provided,
1793 Raw(payload) with packet_info is added
1794 :param list packet_sizes: packet stream pckt sizes,sequentially applied
1795 to packets in stream have
1796 :param int count: number of packets in packet stream
1797 :return: list of packets
1799 self.logger.info("Creating packets")
1801 for i in range(0, count-1):
1802 payload_info = self.create_packet_info(src_if, dst_if)
1804 "Creating packet with index %d" % (payload_info.index))
1805 payload = self.info_to_payload(payload_info)
1806 # add L2 header if not yet provided in packet_header
1807 if packet_header.getlayer(0).name == 'Ethernet':
1808 p = (packet_header /
1811 p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
1814 size = packet_sizes[i % len(packet_sizes)]
1815 self.logger.debug("Packet size %d" % (size))
1816 self.extend_packet(p, size)
1817 # we need to store the packet with the automatic fields computed
1818 # read back the dumped packet (with str())
1819 # to force computing these fields
1820 # probably other ways are possible
1821 p = Ether(scapy.compat.raw(p))
1822 payload_info.data = p.copy()
1823 self.logger.debug(ppp("Created packet:", p))
1825 self.logger.info("Done creating packets")
1828 def send_and_verify_pkts(self, input, pkts, output, compare_func):
1829 """Send packets and verify received packets using compare_func
1831 :param input: ingress interface of DUT
1832 :param pkts: list of packets to transmit
1833 :param output: egress interface of DUT
1834 :param compare_func: function to compare in and out packets
1836 # add traffic stream to input interface
1837 input.add_stream(pkts)
1839 # enable capture on all interfaces
1840 self.pg_enable_capture(self.pg_interfaces)
1843 self.logger.info("Starting traffic")
1846 # get output capture
1847 self.logger.info("Getting packet capture")
1848 capture = output.get_capture()
1850 # assert nothing was captured on input interface
1851 input.assert_nothing_captured()
1853 # verify captured packets
1854 self.verify_captured_pkts(output, capture, compare_func)
1856 def create_packet_header_IPv6(self, dst):
1857 """Create packet header: IPv6 header, UDP header
1859 :param dst: IPv6 destination address
1861 IPv6 source address is 1234::1
1862 UDP source port and destination port are 1234
1865 p = (IPv6(src='1234::1', dst=dst) /
1866 UDP(sport=1234, dport=1234))
1869 def create_packet_header_IPv6_SRH(self, sidlist, segleft):
1870 """Create packet header: IPv6 header with SRH, UDP header
1872 :param list sidlist: segment list
1873 :param int segleft: segments-left field value
1875 IPv6 destination address is set to sidlist[segleft]
1876 IPv6 source addresses are 1234::1 and 4321::1
1877 UDP source port and destination port are 1234
1880 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
1881 IPv6ExtHdrSegmentRouting(addresses=sidlist) /
1882 UDP(sport=1234, dport=1234))
1885 def create_packet_header_IPv6_SRH_IPv6(self, dst, sidlist, segleft):
1886 """Create packet header: IPv6 encapsulated in SRv6:
1887 IPv6 header with SRH, IPv6 header, UDP header
1889 :param ipv6address dst: inner IPv6 destination address
1890 :param list sidlist: segment list of outer IPv6 SRH
1891 :param int segleft: segments-left field of outer IPv6 SRH
1893 Outer IPv6 destination address is set to sidlist[segleft]
1894 IPv6 source addresses are 1234::1 and 4321::1
1895 UDP source port and destination port are 1234
1898 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
1899 IPv6ExtHdrSegmentRouting(addresses=sidlist,
1900 segleft=segleft, nh=41) /
1901 IPv6(src='4321::1', dst=dst) /
1902 UDP(sport=1234, dport=1234))
1905 def create_packet_header_IPv6_IPv6(self, dst_inner, dst_outer):
1906 """Create packet header: IPv6 encapsulated in IPv6:
1907 IPv6 header, IPv6 header, UDP header
1909 :param ipv6address dst_inner: inner IPv6 destination address
1910 :param ipv6address dst_outer: outer IPv6 destination address
1912 IPv6 source addresses are 1234::1 and 4321::1
1913 UDP source port and destination port are 1234
1916 p = (IPv6(src='1234::1', dst=dst_outer) /
1917 IPv6(src='4321::1', dst=dst_inner) /
1918 UDP(sport=1234, dport=1234))
1921 def create_packet_header_IPv6_SRH_SRH_IPv6(self, dst, sidlist1, segleft1,
1922 sidlist2, segleft2):
1923 """Create packet header: IPv6 encapsulated in SRv6 with 2 SRH:
1924 IPv6 header with SRH, 2nd SRH, IPv6 header, UDP header
1926 :param ipv6address dst: inner IPv6 destination address
1927 :param list sidlist1: segment list of outer IPv6 SRH
1928 :param int segleft1: segments-left field of outer IPv6 SRH
1929 :param list sidlist2: segment list of inner IPv6 SRH
1930 :param int segleft2: segments-left field of inner IPv6 SRH
1932 Outer IPv6 destination address is set to sidlist[segleft]
1933 IPv6 source addresses are 1234::1 and 4321::1
1934 UDP source port and destination port are 1234
1937 p = (IPv6(src='1234::1', dst=sidlist1[segleft1]) /
1938 IPv6ExtHdrSegmentRouting(addresses=sidlist1,
1939 segleft=segleft1, nh=43) /
1940 IPv6ExtHdrSegmentRouting(addresses=sidlist2,
1941 segleft=segleft2, nh=41) /
1942 IPv6(src='4321::1', dst=dst) /
1943 UDP(sport=1234, dport=1234))
1946 def create_packet_header_IPv4(self, dst):
1947 """Create packet header: IPv4 header, UDP header
1949 :param dst: IPv4 destination address
1951 IPv4 source address is 123.1.1.1
1952 UDP source port and destination port are 1234
1955 p = (IP(src='123.1.1.1', dst=dst) /
1956 UDP(sport=1234, dport=1234))
1959 def create_packet_header_IPv6_IPv4(self, dst_inner, dst_outer):
1960 """Create packet header: IPv4 encapsulated in IPv6:
1961 IPv6 header, IPv4 header, UDP header
1963 :param ipv4address dst_inner: inner IPv4 destination address
1964 :param ipv6address dst_outer: outer IPv6 destination address
1966 IPv6 source address is 1234::1
1967 IPv4 source address is 123.1.1.1
1968 UDP source port and destination port are 1234
1971 p = (IPv6(src='1234::1', dst=dst_outer) /
1972 IP(src='123.1.1.1', dst=dst_inner) /
1973 UDP(sport=1234, dport=1234))
1976 def create_packet_header_IPv6_SRH_IPv4(self, dst, sidlist, segleft):
1977 """Create packet header: IPv4 encapsulated in SRv6:
1978 IPv6 header with SRH, IPv4 header, UDP header
1980 :param ipv4address dst: inner IPv4 destination address
1981 :param list sidlist: segment list of outer IPv6 SRH
1982 :param int segleft: segments-left field of outer IPv6 SRH
1984 Outer IPv6 destination address is set to sidlist[segleft]
1985 IPv6 source address is 1234::1
1986 IPv4 source address is 123.1.1.1
1987 UDP source port and destination port are 1234
1990 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
1991 IPv6ExtHdrSegmentRouting(addresses=sidlist,
1992 segleft=segleft, nh=4) /
1993 IP(src='123.1.1.1', dst=dst) /
1994 UDP(sport=1234, dport=1234))
1997 def create_packet_header_L2(self, vlan=0):
1998 """Create packet header: L2 header
2000 :param vlan: if vlan!=0 then add 802.1q header
2002 # Note: the dst addr ('00:55:44:33:22:11') is used in
2003 # the compare function compare_rx_tx_packet_T_Encaps_L2
2004 # to detect presence of L2 in SRH payload
2005 p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2006 etype = 0x8137 # IPX
2009 p /= Dot1Q(vlan=vlan, type=etype)
2014 def create_packet_header_IPv6_SRH_L2(self, sidlist, segleft, vlan=0):
2015 """Create packet header: L2 encapsulated in SRv6:
2016 IPv6 header with SRH, L2
2018 :param list sidlist: segment list of outer IPv6 SRH
2019 :param int segleft: segments-left field of outer IPv6 SRH
2020 :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
2022 Outer IPv6 destination address is set to sidlist[segleft]
2023 IPv6 source address is 1234::1
2025 eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2026 etype = 0x8137 # IPX
2029 eth /= Dot1Q(vlan=vlan, type=etype)
2033 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
2034 IPv6ExtHdrSegmentRouting(addresses=sidlist,
2035 segleft=segleft, nh=59) /
2039 def create_packet_header_IPv6_L2(self, dst_outer, vlan=0):
2040 """Create packet header: L2 encapsulated in IPv6:
2043 :param ipv6address dst_outer: outer IPv6 destination address
2044 :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
2046 eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2047 etype = 0x8137 # IPX
2050 eth /= Dot1Q(vlan=vlan, type=etype)
2054 p = (IPv6(src='1234::1', dst=dst_outer, nh=59) / eth)
2057 def get_payload_info(self, packet):
2058 """ Extract the payload_info from the packet
2060 # in most cases, payload_info is in packet[Raw]
2061 # but packet[Raw] gives the complete payload
2062 # (incl L2 header) for the T.Encaps L2 case
2064 payload_info = self.payload_to_info(packet[Raw])
2067 # remote L2 header from packet[Raw]:
2068 # take packet[Raw], convert it to an Ether layer
2069 # and then extract Raw from it
2070 payload_info = self.payload_to_info(
2071 Ether(scapy.compat.r(packet[Raw]))[Raw])
2075 def verify_captured_pkts(self, dst_if, capture, compare_func):
2077 Verify captured packet stream for specified interface.
2078 Compare ingress with egress packets using the specified compare fn
2080 :param dst_if: egress interface of DUT
2081 :param capture: captured packets
2082 :param compare_func: function to compare in and out packet
2084 self.logger.info("Verifying capture on interface %s using function %s"
2085 % (dst_if.name, compare_func.__name__))
2088 for i in self.pg_interfaces:
2089 last_info[i.sw_if_index] = None
2090 dst_sw_if_index = dst_if.sw_if_index
2092 for packet in capture:
2094 # extract payload_info from packet's payload
2095 payload_info = self.get_payload_info(packet)
2096 packet_index = payload_info.index
2098 self.logger.debug("Verifying packet with index %d"
2100 # packet should have arrived on the expected interface
2101 self.assertEqual(payload_info.dst, dst_sw_if_index)
2103 "Got packet on interface %s: src=%u (idx=%u)" %
2104 (dst_if.name, payload_info.src, packet_index))
2106 # search for payload_info with same src and dst if_index
2107 # this will give us the transmitted packet
2108 next_info = self.get_next_packet_info_for_interface2(
2109 payload_info.src, dst_sw_if_index,
2110 last_info[payload_info.src])
2111 last_info[payload_info.src] = next_info
2112 # next_info should not be None
2113 self.assertTrue(next_info is not None)
2114 # index of tx and rx packets should be equal
2115 self.assertEqual(packet_index, next_info.index)
2116 # data field of next_info contains the tx packet
2117 txed_packet = next_info.data
2119 self.logger.debug(ppp("Transmitted packet:",
2120 txed_packet)) # ppp=Pretty Print Packet
2122 self.logger.debug(ppp("Received packet:", packet))
2124 # compare rcvd packet with expected packet using compare_func
2125 compare_func(txed_packet, packet)
2128 self.logger.error(ppp("Unexpected or invalid packet:", packet))
2131 # have all expected packets arrived?
2132 for i in self.pg_interfaces:
2133 remaining_packet = self.get_next_packet_info_for_interface2(
2134 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
2135 self.assertTrue(remaining_packet is None,
2136 "Interface %s: Packet expected from interface %s "
2137 "didn't arrive" % (dst_if.name, i.name))
2140 if __name__ == '__main__':
2141 unittest.main(testRunner=VppTestRunner)