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gerrit.nordix.org / fdio / vpp / abbc04c564b4120a3ee753cdd133a7a151dc5c8e / . / test / test_srv6.py
blob: 4a2ef016039bc7388b5c81ac7242e4bdeb46133c [file] [log] [blame]
Kris Michielsen91074432017-06-22 13:00:20 +0200[diff] [blame]1#!/usr/bin/env python
2
3import unittest
Gabriel Ganne8527f122017-10-02 11:41:24 +0200[diff] [blame]4import binascii
Kris Michielsen91074432017-06-22 13:00:20 +0200[diff] [blame]5from socket import AF_INET6
6
7from framework import VppTestCase, VppTestRunner
Florin Corasd0a59722017-10-15 17:41:21 +0000[diff] [blame]8from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
Kris Michielsen91074432017-06-22 13:00:20 +0200[diff] [blame]9from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
10 SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
11
12from scapy.packet import Raw
13from scapy.layers.l2 import Ether, Dot1Q
14from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
15from scapy.layers.inet import IP, UDP
16
17from scapy.utils import inet_pton, inet_ntop
18
19from util import ppp
20
21
22class TestSRv6(VppTestCase):
23 """ SRv6 Test Case """
24
25 @classmethod
26 def setUpClass(self):
27 super(TestSRv6, self).setUpClass()
28
29 def setUp(self):
30 """ Perform test setup before each test case.
31 """
32 super(TestSRv6, self).setUp()
33
34 # packet sizes, inclusive L2 overhead
35 self.pg_packet_sizes = [64, 512, 1518, 9018]
36
37 # reset packet_infos
38 self.reset_packet_infos()
39
40 def tearDown(self):
41 """ Clean up test setup after each test case.
42 """
43 self.teardown_interfaces()
44
45 super(TestSRv6, self).tearDown()
46
47 def configure_interface(self,
48 interface,
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
56 """
57 self.logger.debug("Configuring interface %s" % (interface.name))
58 if ipv6:
59 self.logger.debug("Configuring IPv6")
60 interface.set_table_ip6(ipv6_table_id)
61 interface.config_ip6()
62 interface.resolve_ndp(timeout=5)
63 if ipv4:
64 self.logger.debug("Configuring IPv4")
65 interface.set_table_ip4(ipv4_table_id)
66 interface.config_ip4()
67 interface.resolve_arp()
68 interface.admin_up()
69
70 def setup_interfaces(self, ipv6=[], ipv4=[],
71 ipv6_table_id=[], ipv4_table_id=[]):
72 """ Create and configure interfaces.
73
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.
79 """
80 # how many interfaces?
81 if len(ipv6):
82 count = len(ipv6)
83 else:
84 count = len(ipv4)
85 self.logger.debug("Creating and configuring %d interfaces" % (count))
86
87 # fill up ipv6 and ipv4 lists if needed
88 # not enabled (False) is the default
89 if len(ipv6) < count:
90 ipv6 += (count - len(ipv6)) * [False]
91 if len(ipv4) < count:
92 ipv4 += (count - len(ipv4)) * [False]
93
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]
100
101 # create 'count' pg interfaces
102 self.create_pg_interfaces(range(count))
103
104 # setup all interfaces
105 for i in range(count):
106 intf = self.pg_interfaces[i]
107 self.configure_interface(intf,
108 ipv6[i], ipv4[i],
109 ipv6_table_id[i], ipv4_table_id[i])
110
111 if any(ipv6):
112 self.logger.debug(self.vapi.cli("show ip6 neighbors"))
113 if any(ipv4):
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"))
117
118 return self.pg_interfaces
119
120 def teardown_interfaces(self):
121 """ Unconfigure and bring down interface.
122 """
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))
Neale Rannsf9342022017-10-13 02:43:33 -0700[diff] [blame]128 i.admin_down()
Florin Corasd0a59722017-10-15 17:41:21 +0000[diff] [blame]129 i.unconfig()
Kris Michielsen91074432017-06-22 13:00:20 +0200[diff] [blame]130
131 def test_SRv6_T_Encaps(self):
132 """ Test SRv6 Transit.Encaps behavior for IPv6.
133 """
134 # send traffic to one destination interface
135 # source and destination are IPv6 only
136 self.setup_interfaces(ipv6=[True, True])
137
138 # configure FIB entries
139 route = VppIpRoute(self, "a4::", 64,
140 [VppRoutePath(self.pg1.remote_ip6,
141 self.pg1.sw_if_index,
142 proto=DpoProto.DPO_PROTO_IP6)],
143 is_ip6=1)
144 route.add_vpp_config()
145
146 # configure encaps IPv6 source address
147 # needs to be done before SR Policy config
148 # TODO: API?
149 self.vapi.cli("set sr encaps source addr a3::")
150
151 bsid = 'a3::9999:1'
152 # configure SRv6 Policy
153 # Note: segment list order: first -> last
154 sr_policy = VppSRv6Policy(
155 self, bsid=bsid,
156 is_encap=1,
157 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
158 weight=1, fib_table=0,
159 segments=['a4::', 'a5::', 'a6::c7'],
160 source='a3::')
161 sr_policy.add_vpp_config()
162 self.sr_policy = sr_policy
163
164 # log the sr policies
165 self.logger.info(self.vapi.cli("show sr policies"))
166
167 # steer IPv6 traffic to a7::/64 into SRv6 Policy
168 # use the bsid of the above self.sr_policy
169 pol_steering = VppSRv6Steering(
170 self,
171 bsid=self.sr_policy.bsid,
172 prefix="a7::", mask_width=64,
173 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
174 sr_policy_index=0, table_id=0,
175 sw_if_index=0)
176 pol_steering.add_vpp_config()
177
178 # log the sr steering policies
179 self.logger.info(self.vapi.cli("show sr steering policies"))
180
181 # create packets
182 count = len(self.pg_packet_sizes)
183 dst_inner = 'a7::1234'
184 pkts = []
185
186 # create IPv6 packets without SRH
187 packet_header = self.create_packet_header_IPv6(dst_inner)
188 # create traffic stream pg0->pg1
189 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
190 self.pg_packet_sizes, count))
191
192 # create IPv6 packets with SRH
193 # packets with segments-left 1, active segment a7::
194 packet_header = self.create_packet_header_IPv6_SRH(
195 sidlist=['a8::', 'a7::', 'a6::'],
196 segleft=1)
197 # create traffic stream pg0->pg1
198 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
199 self.pg_packet_sizes, count))
200
201 # create IPv6 packets with SRH and IPv6
202 # packets with segments-left 1, active segment a7::
203 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
204 dst_inner,
205 sidlist=['a8::', 'a7::', 'a6::'],
206 segleft=1)
207 # create traffic stream pg0->pg1
208 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
209 self.pg_packet_sizes, count))
210
211 # send packets and verify received packets
212 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
213 self.compare_rx_tx_packet_T_Encaps)
214
215 # log the localsid counters
216 self.logger.info(self.vapi.cli("show sr localsid"))
217
218 # remove SR steering
219 pol_steering.remove_vpp_config()
220 self.logger.info(self.vapi.cli("show sr steering policies"))
221
222 # remove SR Policies
223 self.sr_policy.remove_vpp_config()
224 self.logger.info(self.vapi.cli("show sr policies"))
225
226 # remove FIB entries
227 # done by tearDown
228
229 # cleanup interfaces
230 self.teardown_interfaces()
231
232 def test_SRv6_T_Insert(self):
233 """ Test SRv6 Transit.Insert behavior (IPv6 only).
234 """
235 # send traffic to one destination interface
236 # source and destination are IPv6 only
237 self.setup_interfaces(ipv6=[True, True])
238
239 # configure FIB entries
240 route = VppIpRoute(self, "a4::", 64,
241 [VppRoutePath(self.pg1.remote_ip6,
242 self.pg1.sw_if_index,
243 proto=DpoProto.DPO_PROTO_IP6)],
244 is_ip6=1)
245 route.add_vpp_config()
246
247 # configure encaps IPv6 source address
248 # needs to be done before SR Policy config
249 # TODO: API?
250 self.vapi.cli("set sr encaps source addr a3::")
251
252 bsid = 'a3::9999:1'
253 # configure SRv6 Policy
254 # Note: segment list order: first -> last
255 sr_policy = VppSRv6Policy(
256 self, bsid=bsid,
257 is_encap=0,
258 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
259 weight=1, fib_table=0,
260 segments=['a4::', 'a5::', 'a6::c7'],
261 source='a3::')
262 sr_policy.add_vpp_config()
263 self.sr_policy = sr_policy
264
265 # log the sr policies
266 self.logger.info(self.vapi.cli("show sr policies"))
267
268 # steer IPv6 traffic to a7::/64 into SRv6 Policy
269 # use the bsid of the above self.sr_policy
270 pol_steering = VppSRv6Steering(
271 self,
272 bsid=self.sr_policy.bsid,
273 prefix="a7::", mask_width=64,
274 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
275 sr_policy_index=0, table_id=0,
276 sw_if_index=0)
277 pol_steering.add_vpp_config()
278
279 # log the sr steering policies
280 self.logger.info(self.vapi.cli("show sr steering policies"))
281
282 # create packets
283 count = len(self.pg_packet_sizes)
284 dst_inner = 'a7::1234'
285 pkts = []
286
287 # create IPv6 packets without SRH
288 packet_header = self.create_packet_header_IPv6(dst_inner)
289 # create traffic stream pg0->pg1
290 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
291 self.pg_packet_sizes, count))
292
293 # create IPv6 packets with SRH
294 # packets with segments-left 1, active segment a7::
295 packet_header = self.create_packet_header_IPv6_SRH(
296 sidlist=['a8::', 'a7::', 'a6::'],
297 segleft=1)
298 # create traffic stream pg0->pg1
299 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
300 self.pg_packet_sizes, count))
301
302 # send packets and verify received packets
303 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
304 self.compare_rx_tx_packet_T_Insert)
305
306 # log the localsid counters
307 self.logger.info(self.vapi.cli("show sr localsid"))
308
309 # remove SR steering
310 pol_steering.remove_vpp_config()
311 self.logger.info(self.vapi.cli("show sr steering policies"))
312
313 # remove SR Policies
314 self.sr_policy.remove_vpp_config()
315 self.logger.info(self.vapi.cli("show sr policies"))
316
317 # remove FIB entries
318 # done by tearDown
319
320 # cleanup interfaces
321 self.teardown_interfaces()
322
323 def test_SRv6_T_Encaps_IPv4(self):
324 """ Test SRv6 Transit.Encaps behavior for IPv4.
325 """
326 # send traffic to one destination interface
327 # source interface is IPv4 only
328 # destination interface is IPv6 only
329 self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
330
331 # configure FIB entries
332 route = VppIpRoute(self, "a4::", 64,
333 [VppRoutePath(self.pg1.remote_ip6,
334 self.pg1.sw_if_index,
335 proto=DpoProto.DPO_PROTO_IP6)],
336 is_ip6=1)
337 route.add_vpp_config()
338
339 # configure encaps IPv6 source address
340 # needs to be done before SR Policy config
341 # TODO: API?
342 self.vapi.cli("set sr encaps source addr a3::")
343
344 bsid = 'a3::9999:1'
345 # configure SRv6 Policy
346 # Note: segment list order: first -> last
347 sr_policy = VppSRv6Policy(
348 self, bsid=bsid,
349 is_encap=1,
350 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
351 weight=1, fib_table=0,
352 segments=['a4::', 'a5::', 'a6::c7'],
353 source='a3::')
354 sr_policy.add_vpp_config()
355 self.sr_policy = sr_policy
356
357 # log the sr policies
358 self.logger.info(self.vapi.cli("show sr policies"))
359
360 # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
361 # use the bsid of the above self.sr_policy
362 pol_steering = VppSRv6Steering(
363 self,
364 bsid=self.sr_policy.bsid,
365 prefix="7.1.1.0", mask_width=24,
366 traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
367 sr_policy_index=0, table_id=0,
368 sw_if_index=0)
369 pol_steering.add_vpp_config()
370
371 # log the sr steering policies
372 self.logger.info(self.vapi.cli("show sr steering policies"))
373
374 # create packets
375 count = len(self.pg_packet_sizes)
376 dst_inner = '7.1.1.123'
377 pkts = []
378
379 # create IPv4 packets
380 packet_header = self.create_packet_header_IPv4(dst_inner)
381 # create traffic stream pg0->pg1
382 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
383 self.pg_packet_sizes, count))
384
385 # send packets and verify received packets
386 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
387 self.compare_rx_tx_packet_T_Encaps_IPv4)
388
389 # log the localsid counters
390 self.logger.info(self.vapi.cli("show sr localsid"))
391
392 # remove SR steering
393 pol_steering.remove_vpp_config()
394 self.logger.info(self.vapi.cli("show sr steering policies"))
395
396 # remove SR Policies
397 self.sr_policy.remove_vpp_config()
398 self.logger.info(self.vapi.cli("show sr policies"))
399
400 # remove FIB entries
401 # done by tearDown
402
403 # cleanup interfaces
404 self.teardown_interfaces()
405
406 @unittest.skip("VPP crashes after running this test")
407 def test_SRv6_T_Encaps_L2(self):
408 """ Test SRv6 Transit.Encaps behavior for L2.
409 """
410 # send traffic to one destination interface
411 # source interface is IPv4 only TODO?
412 # destination interface is IPv6 only
413 self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
414
415 # configure FIB entries
416 route = VppIpRoute(self, "a4::", 64,
417 [VppRoutePath(self.pg1.remote_ip6,
418 self.pg1.sw_if_index,
419 proto=DpoProto.DPO_PROTO_IP6)],
420 is_ip6=1)
421 route.add_vpp_config()
422
423 # configure encaps IPv6 source address
424 # needs to be done before SR Policy config
425 # TODO: API?
426 self.vapi.cli("set sr encaps source addr a3::")
427
428 bsid = 'a3::9999:1'
429 # configure SRv6 Policy
430 # Note: segment list order: first -> last
431 sr_policy = VppSRv6Policy(
432 self, bsid=bsid,
433 is_encap=1,
434 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
435 weight=1, fib_table=0,
436 segments=['a4::', 'a5::', 'a6::c7'],
437 source='a3::')
438 sr_policy.add_vpp_config()
439 self.sr_policy = sr_policy
440
441 # log the sr policies
442 self.logger.info(self.vapi.cli("show sr policies"))
443
444 # steer L2 traffic into SRv6 Policy
445 # use the bsid of the above self.sr_policy
446 pol_steering = VppSRv6Steering(
447 self,
448 bsid=self.sr_policy.bsid,
449 prefix="::", mask_width=0,
450 traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
451 sr_policy_index=0, table_id=0,
452 sw_if_index=self.pg0.sw_if_index)
453 pol_steering.add_vpp_config()
454
455 # log the sr steering policies
456 self.logger.info(self.vapi.cli("show sr steering policies"))
457
458 # create packets
459 count = len(self.pg_packet_sizes)
460 pkts = []
461
462 # create L2 packets without dot1q header
463 packet_header = self.create_packet_header_L2()
464 # create traffic stream pg0->pg1
465 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
466 self.pg_packet_sizes, count))
467
468 # create L2 packets with dot1q header
469 packet_header = self.create_packet_header_L2(vlan=123)
470 # create traffic stream pg0->pg1
471 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
472 self.pg_packet_sizes, count))
473
474 # send packets and verify received packets
475 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
476 self.compare_rx_tx_packet_T_Encaps_L2)
477
478 # log the localsid counters
479 self.logger.info(self.vapi.cli("show sr localsid"))
480
481 # remove SR steering
482 pol_steering.remove_vpp_config()
483 self.logger.info(self.vapi.cli("show sr steering policies"))
484
485 # remove SR Policies
486 self.sr_policy.remove_vpp_config()
487 self.logger.info(self.vapi.cli("show sr policies"))
488
489 # remove FIB entries
490 # done by tearDown
491
492 # cleanup interfaces
493 self.teardown_interfaces()
494
495 def test_SRv6_End(self):
496 """ Test SRv6 End (without PSP) behavior.
497 """
498 # send traffic to one destination interface
499 # source and destination interfaces are IPv6 only
500 self.setup_interfaces(ipv6=[True, True])
501
502 # configure FIB entries
503 route = VppIpRoute(self, "a4::", 64,
504 [VppRoutePath(self.pg1.remote_ip6,
505 self.pg1.sw_if_index,
506 proto=DpoProto.DPO_PROTO_IP6)],
507 is_ip6=1)
508 route.add_vpp_config()
509
510 # configure SRv6 localSID End without PSP behavior
511 localsid = VppSRv6LocalSID(
512 self, localsid_addr='A3::0',
513 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
514 nh_addr='::',
515 end_psp=0,
516 sw_if_index=0,
517 vlan_index=0,
518 fib_table=0)
519 localsid.add_vpp_config()
520 # log the localsids
521 self.logger.debug(self.vapi.cli("show sr localsid"))
522
523 # create IPv6 packets with SRH (SL=2, SL=1, SL=0)
524 # send one packet per SL value per packet size
525 # SL=0 packet with localSID End with USP needs 2nd SRH
526 count = len(self.pg_packet_sizes)
527 dst_inner = 'a4::1234'
528 pkts = []
529
530 # packets with segments-left 2, active segment a3::
531 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
532 dst_inner,
533 sidlist=['a5::', 'a4::', 'a3::'],
534 segleft=2)
535 # create traffic stream pg0->pg1
536 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
537 self.pg_packet_sizes, count))
538
539 # packets with segments-left 1, active segment a3::
540 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
541 dst_inner,
542 sidlist=['a4::', 'a3::', 'a2::'],
543 segleft=1)
544 # add to traffic stream pg0->pg1
545 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
546 self.pg_packet_sizes, count))
547
548 # TODO: test behavior with SL=0 packet (needs 2*SRH?)
549
550 # send packets and verify received packets
551 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
552 self.compare_rx_tx_packet_End)
553
554 # log the localsid counters
555 self.logger.info(self.vapi.cli("show sr localsid"))
556
557 # remove SRv6 localSIDs
558 localsid.remove_vpp_config()
559
560 # remove FIB entries
561 # done by tearDown
562
563 # cleanup interfaces
564 self.teardown_interfaces()
565
566 def test_SRv6_End_with_PSP(self):
567 """ Test SRv6 End with PSP behavior.
568 """
569 # send traffic to one destination interface
570 # source and destination interfaces are IPv6 only
571 self.setup_interfaces(ipv6=[True, True])
572
573 # configure FIB entries
574 route = VppIpRoute(self, "a4::", 64,
575 [VppRoutePath(self.pg1.remote_ip6,
576 self.pg1.sw_if_index,
577 proto=DpoProto.DPO_PROTO_IP6)],
578 is_ip6=1)
579 route.add_vpp_config()
580
581 # configure SRv6 localSID End with PSP behavior
582 localsid = VppSRv6LocalSID(
583 self, localsid_addr='A3::0',
584 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
585 nh_addr='::',
586 end_psp=1,
587 sw_if_index=0,
588 vlan_index=0,
589 fib_table=0)
590 localsid.add_vpp_config()
591 # log the localsids
592 self.logger.debug(self.vapi.cli("show sr localsid"))
593
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'
599 pkts = []
600
601 # packets with segments-left 2, active segment a3::
602 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
603 dst_inner,
604 sidlist=['a5::', 'a4::', 'a3::'],
605 segleft=2)
606 # create traffic stream pg0->pg1
607 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
608 self.pg_packet_sizes, count))
609
610 # packets with segments-left 1, active segment a3::
611 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
612 dst_inner,
613 sidlist=['a4::', 'a3::', 'a2::'],
614 segleft=1)
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))
618
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)
622
623 # log the localsid counters
624 self.logger.info(self.vapi.cli("show sr localsid"))
625
626 # remove SRv6 localSIDs
627 localsid.remove_vpp_config()
628
629 # remove FIB entries
630 # done by tearDown
631
632 # cleanup interfaces
633 self.teardown_interfaces()
634
635 def test_SRv6_End_X(self):
636 """ Test SRv6 End.X (without PSP) behavior.
637 """
638 # create three interfaces (1 source, 2 destinations)
639 # source and destination interfaces are IPv6 only
640 self.setup_interfaces(ipv6=[True, True, True])
641
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 proto=DpoProto.DPO_PROTO_IP6),
648 VppRoutePath(self.pg2.remote_ip6,
649 self.pg2.sw_if_index,
650 proto=DpoProto.DPO_PROTO_IP6)],
651 is_ip6=1)
652 route.add_vpp_config()
653 self.logger.debug(self.vapi.cli("show ip6 fib"))
654
655 # configure SRv6 localSID End.X without PSP behavior
656 # End.X points to interface pg1
657 localsid = VppSRv6LocalSID(
658 self, localsid_addr='A3::C4',
659 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
660 nh_addr=self.pg1.remote_ip6,
661 end_psp=0,
662 sw_if_index=self.pg1.sw_if_index,
663 vlan_index=0,
664 fib_table=0)
665 localsid.add_vpp_config()
666 # log the localsids
667 self.logger.debug(self.vapi.cli("show sr localsid"))
668
669 # create IPv6 packets with SRH (SL=2, SL=1)
670 # send one packet per SL value per packet size
671 # SL=0 packet with localSID End with PSP is dropped
672 count = len(self.pg_packet_sizes)
673 dst_inner = 'a4::1234'
674 pkts = []
675
676 # packets with segments-left 2, active segment a3::c4
677 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
678 dst_inner,
679 sidlist=['a5::', 'a4::', 'a3::c4'],
680 segleft=2)
681 # create traffic stream pg0->pg1
682 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
683 self.pg_packet_sizes, count))
684
685 # packets with segments-left 1, active segment a3::c4
686 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
687 dst_inner,
688 sidlist=['a4::', 'a3::c4', 'a2::'],
689 segleft=1)
690 # add to traffic stream pg0->pg1
691 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
692 self.pg_packet_sizes, count))
693
694 # send packets and verify received packets
695 # using same comparison function as End (no PSP)
696 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
697 self.compare_rx_tx_packet_End)
698
699 # assert nothing was received on the other interface (pg2)
700 self.pg2.assert_nothing_captured("mis-directed packet(s)")
701
702 # log the localsid counters
703 self.logger.info(self.vapi.cli("show sr localsid"))
704
705 # remove SRv6 localSIDs
706 localsid.remove_vpp_config()
707
708 # remove FIB entries
709 # done by tearDown
710
711 # cleanup interfaces
712 self.teardown_interfaces()
713
714 def test_SRv6_End_X_with_PSP(self):
715 """ Test SRv6 End.X with PSP behavior.
716 """
717 # create three interfaces (1 source, 2 destinations)
718 # source and destination interfaces are IPv6 only
719 self.setup_interfaces(ipv6=[True, True, True])
720
721 # configure FIB entries
722 # a4::/64 via pg1 and pg2
723 route = VppIpRoute(self, "a4::", 64,
724 [VppRoutePath(self.pg1.remote_ip6,
725 self.pg1.sw_if_index,
726 proto=DpoProto.DPO_PROTO_IP6),
727 VppRoutePath(self.pg2.remote_ip6,
728 self.pg2.sw_if_index,
729 proto=DpoProto.DPO_PROTO_IP6)],
730 is_ip6=1)
731 route.add_vpp_config()
732
733 # configure SRv6 localSID End with PSP behavior
734 localsid = VppSRv6LocalSID(
735 self, localsid_addr='A3::C4',
736 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
737 nh_addr=self.pg1.remote_ip6,
738 end_psp=1,
739 sw_if_index=self.pg1.sw_if_index,
740 vlan_index=0,
741 fib_table=0)
742 localsid.add_vpp_config()
743 # log the localsids
744 self.logger.debug(self.vapi.cli("show sr localsid"))
745
746 # create IPv6 packets with SRH (SL=2, SL=1)
747 # send one packet per SL value per packet size
748 # SL=0 packet with localSID End with PSP is dropped
749 count = len(self.pg_packet_sizes)
750 dst_inner = 'a4::1234'
751 pkts = []
752
753 # packets with segments-left 2, active segment a3::
754 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
755 dst_inner,
756 sidlist=['a5::', 'a4::', 'a3::c4'],
757 segleft=2)
758 # create traffic stream pg0->pg1
759 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
760 self.pg_packet_sizes, count))
761
762 # packets with segments-left 1, active segment a3::
763 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
764 dst_inner,
765 sidlist=['a4::', 'a3::c4', 'a2::'],
766 segleft=1)
767 # add to traffic stream pg0->pg1
768 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
769 self.pg_packet_sizes, count))
770
771 # send packets and verify received packets
772 # using same comparison function as End with PSP
773 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
774 self.compare_rx_tx_packet_End_PSP)
775
776 # assert nothing was received on the other interface (pg2)
777 self.pg2.assert_nothing_captured("mis-directed packet(s)")
778
779 # log the localsid counters
780 self.logger.info(self.vapi.cli("show sr localsid"))
781
782 # remove SRv6 localSIDs
783 localsid.remove_vpp_config()
784
785 # remove FIB entries
786 # done by tearDown
787
788 # cleanup interfaces
789 self.teardown_interfaces()
790
791 def test_SRv6_End_DX6(self):
792 """ Test SRv6 End.DX6 behavior.
793 """
794 # send traffic to one destination interface
795 # source and destination interfaces are IPv6 only
796 self.setup_interfaces(ipv6=[True, True])
797
798 # configure SRv6 localSID End.DX6 behavior
799 localsid = VppSRv6LocalSID(
800 self, localsid_addr='a3::c4',
801 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
802 nh_addr=self.pg1.remote_ip6,
803 end_psp=0,
804 sw_if_index=self.pg1.sw_if_index,
805 vlan_index=0,
806 fib_table=0)
807 localsid.add_vpp_config()
808 # log the localsids
809 self.logger.debug(self.vapi.cli("show sr localsid"))
810
811 # create IPv6 packets with SRH (SL=0)
812 # send one packet per packet size
813 count = len(self.pg_packet_sizes)
814 dst_inner = 'a4::1234' # inner header destination address
815 pkts = []
816
817 # packets with SRH, segments-left 0, active segment a3::c4
818 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
819 dst_inner,
820 sidlist=['a3::c4', 'a2::', 'a1::'],
821 segleft=0)
822 # add to traffic stream pg0->pg1
823 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
824 self.pg_packet_sizes, count))
825
826 # packets without SRH, IPv6 in IPv6
827 # outer IPv6 dest addr is the localsid End.DX6
828 packet_header = self.create_packet_header_IPv6_IPv6(
829 dst_inner,
830 dst_outer='a3::c4')
831 # add to traffic stream pg0->pg1
832 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
833 self.pg_packet_sizes, count))
834
835 # send packets and verify received packets
836 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
837 self.compare_rx_tx_packet_End_DX6)
838
839 # log the localsid counters
840 self.logger.info(self.vapi.cli("show sr localsid"))
841
842 # remove SRv6 localSIDs
843 localsid.remove_vpp_config()
844
845 # cleanup interfaces
846 self.teardown_interfaces()
847
848 def test_SRv6_End_DT6(self):
849 """ Test SRv6 End.DT6 behavior.
850 """
851 # create three interfaces (1 source, 2 destinations)
852 # all interfaces are IPv6 only
853 # source interface in global FIB (0)
854 # destination interfaces in global and vrf
855 vrf_1 = 1
856 self.setup_interfaces(ipv6=[True, True, True],
857 ipv6_table_id=[0, 0, vrf_1])
858
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,
866 proto=DpoProto.DPO_PROTO_IP6,
867 nh_table_id=0)],
868 table_id=0,
869 is_ip6=1)
870 route0.add_vpp_config()
871 route1 = VppIpRoute(self, "a4::", 64,
872 [VppRoutePath(self.pg2.remote_ip6,
873 self.pg2.sw_if_index,
874 proto=DpoProto.DPO_PROTO_IP6,
875 nh_table_id=vrf_1)],
876 table_id=vrf_1,
877 is_ip6=1)
878 route1.add_vpp_config()
879 self.logger.debug(self.vapi.cli("show ip6 fib"))
880
881 # configure SRv6 localSID End.DT6 behavior
882 # Note:
883 # fib_table: where the localsid is installed
884 # sw_if_index: in T-variants of localsid this is the vrf table_id
885 localsid = VppSRv6LocalSID(
886 self, localsid_addr='a3::c4',
887 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
888 nh_addr='::',
889 end_psp=0,
890 sw_if_index=vrf_1,
891 vlan_index=0,
892 fib_table=0)
893 localsid.add_vpp_config()
894 # log the localsids
895 self.logger.debug(self.vapi.cli("show sr localsid"))
896
897 # create IPv6 packets with SRH (SL=0)
898 # send one packet per packet size
899 count = len(self.pg_packet_sizes)
900 dst_inner = 'a4::1234' # inner header destination address
901 pkts = []
902
903 # packets with SRH, segments-left 0, active segment a3::c4
904 packet_header = self.create_packet_header_IPv6_SRH_IPv6(
905 dst_inner,
906 sidlist=['a3::c4', 'a2::', 'a1::'],
907 segleft=0)
908 # add to traffic stream pg0->pg1
909 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
910 self.pg_packet_sizes, count))
911
912 # packets without SRH, IPv6 in IPv6
913 # outer IPv6 dest addr is the localsid End.DT6
914 packet_header = self.create_packet_header_IPv6_IPv6(
915 dst_inner,
916 dst_outer='a3::c4')
917 # add to traffic stream pg0->pg1
918 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
919 self.pg_packet_sizes, count))
920
921 # send packets and verify received packets
922 # using same comparison function as End.DX6
923 self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
924 self.compare_rx_tx_packet_End_DX6)
925
926 # assert nothing was received on the other interface (pg2)
927 self.pg1.assert_nothing_captured("mis-directed packet(s)")
928
929 # log the localsid counters
930 self.logger.info(self.vapi.cli("show sr localsid"))
931
932 # remove SRv6 localSIDs
933 localsid.remove_vpp_config()
934
935 # remove FIB entries
936 # done by tearDown
937
938 # cleanup interfaces
939 self.teardown_interfaces()
940
941 def test_SRv6_End_DX4(self):
942 """ Test SRv6 End.DX4 behavior.
943 """
944 # send traffic to one destination interface
945 # source interface is IPv6 only
946 # destination interface is IPv4 only
947 self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
948
949 # configure SRv6 localSID End.DX4 behavior
950 localsid = VppSRv6LocalSID(
951 self, localsid_addr='a3::c4',
952 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
953 nh_addr=self.pg1.remote_ip4,
954 end_psp=0,
955 sw_if_index=self.pg1.sw_if_index,
956 vlan_index=0,
957 fib_table=0)
958 localsid.add_vpp_config()
959 # log the localsids
960 self.logger.debug(self.vapi.cli("show sr localsid"))
961
962 # send one packet per packet size
963 count = len(self.pg_packet_sizes)
964 dst_inner = '4.1.1.123' # inner header destination address
965 pkts = []
966
967 # packets with SRH, segments-left 0, active segment a3::c4
968 packet_header = self.create_packet_header_IPv6_SRH_IPv4(
969 dst_inner,
970 sidlist=['a3::c4', 'a2::', 'a1::'],
971 segleft=0)
972 # add to traffic stream pg0->pg1
973 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
974 self.pg_packet_sizes, count))
975
976 # packets without SRH, IPv4 in IPv6
977 # outer IPv6 dest addr is the localsid End.DX4
978 packet_header = self.create_packet_header_IPv6_IPv4(
979 dst_inner,
980 dst_outer='a3::c4')
981 # add to traffic stream pg0->pg1
982 pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
983 self.pg_packet_sizes, count))
984
985 # send packets and verify received packets
986 self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
987 self.compare_rx_tx_packet_End_DX4)
988
989 # log the localsid counters
990 self.logger.info(self.vapi.cli("show sr localsid"))
991
992 # remove SRv6 localSIDs
993 localsid.remove_vpp_config()
994
995 # cleanup interfaces
996 self.teardown_interfaces()
997
998 def test_SRv6_End_DT4(self):
999 """ Test SRv6 End.DT4 behavior.
1000 """
1001 # create three interfaces (1 source, 2 destinations)
1002 # source interface is IPv6-only
1003 # destination interfaces are IPv4 only
1004 # source interface in global FIB (0)
1005 # destination interfaces in global and vrf
1006 vrf_1 = 1
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])
1011
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,
1019 nh_table_id=0)],
1020 table_id=0,
1021 is_ip6=0)
1022 route0.add_vpp_config()
1023 route1 = VppIpRoute(self, "4.1.1.0", 24,
1024 [VppRoutePath(self.pg2.remote_ip4,
1025 self.pg2.sw_if_index,
1026 nh_table_id=vrf_1)],
1027 table_id=vrf_1,
1028 is_ip6=0)
1029 route1.add_vpp_config()
1030 self.logger.debug(self.vapi.cli("show ip fib"))
1031
1032 # configure SRv6 localSID End.DT6 behavior
1033 # Note:
1034 # fib_table: where the localsid is installed
1035 # sw_if_index: in T-variants of localsid: vrf table_id
1036 localsid = VppSRv6LocalSID(
1037 self, localsid_addr='a3::c4',
1038 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
1039 nh_addr='::',
1040 end_psp=0,
1041 sw_if_index=vrf_1,
1042 vlan_index=0,
1043 fib_table=0)
1044 localsid.add_vpp_config()
1045 # log the localsids
1046 self.logger.debug(self.vapi.cli("show sr localsid"))
1047
1048 # create IPv6 packets with SRH (SL=0)
1049 # send one packet per packet size
1050 count = len(self.pg_packet_sizes)
1051 dst_inner = '4.1.1.123' # inner header destination address
1052 pkts = []
1053
1054 # packets with SRH, segments-left 0, active segment a3::c4
1055 packet_header = self.create_packet_header_IPv6_SRH_IPv4(
1056 dst_inner,
1057 sidlist=['a3::c4', 'a2::', 'a1::'],
1058 segleft=0)
1059 # add to traffic stream pg0->pg1
1060 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
1061 self.pg_packet_sizes, count))
1062
1063 # packets without SRH, IPv6 in IPv6
1064 # outer IPv6 dest addr is the localsid End.DX4
1065 packet_header = self.create_packet_header_IPv6_IPv4(
1066 dst_inner,
1067 dst_outer='a3::c4')
1068 # add to traffic stream pg0->pg1
1069 pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
1070 self.pg_packet_sizes, count))
1071
1072 # send packets and verify received packets
1073 # using same comparison function as End.DX4
1074 self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
1075 self.compare_rx_tx_packet_End_DX4)
1076
1077 # assert nothing was received on the other interface (pg2)
1078 self.pg1.assert_nothing_captured("mis-directed packet(s)")
1079
1080 # log the localsid counters
1081 self.logger.info(self.vapi.cli("show sr localsid"))
1082
1083 # remove SRv6 localSIDs
1084 localsid.remove_vpp_config()
1085
1086 # remove FIB entries
1087 # done by tearDown
1088
1089 # cleanup interfaces
1090 self.teardown_interfaces()
1091
1092 def test_SRv6_End_DX2(self):
1093 """ Test SRv6 End.DX2 behavior.
1094 """
1095 # send traffic to one destination interface
1096 # source interface is IPv6 only
1097 self.setup_interfaces(ipv6=[True, False], ipv4=[False, False])
1098
1099 # configure SRv6 localSID End.DX2 behavior
1100 localsid = VppSRv6LocalSID(
1101 self, localsid_addr='a3::c4',
1102 behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
1103 nh_addr='::',
1104 end_psp=0,
1105 sw_if_index=self.pg1.sw_if_index,
1106 vlan_index=0,
1107 fib_table=0)
1108 localsid.add_vpp_config()
1109 # log the localsids
1110 self.logger.debug(self.vapi.cli("show sr localsid"))
1111
1112 # send one packet per packet size
1113 count = len(self.pg_packet_sizes)
1114 pkts = []
1115
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::'],
1120 segleft=0,
1121 vlan=0)
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))
1125
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::'],
1130 segleft=0,
1131 vlan=123)
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))
1135
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(
1140 dst_outer='a3::c4',
1141 vlan=0)
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))
1145
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(
1150 dst_outer='a3::c4',
1151 vlan=123)
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))
1155
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)
1159
1160 # log the localsid counters
1161 self.logger.info(self.vapi.cli("show sr localsid"))
1162
1163 # remove SRv6 localSIDs
1164 localsid.remove_vpp_config()
1165
1166 # cleanup interfaces
1167 self.teardown_interfaces()
1168
Gabriel Ganne8527f122017-10-02 11:41:24 +0200[diff] [blame]1169 def test_SRv6_T_Insert_Classifier(self):
1170 """ Test SRv6 Transit.Insert behavior (IPv6 only).
1171 steer packets using the classifier
1172 """
1173 # send traffic to one destination interface
1174 # source and destination are IPv6 only
1175 self.setup_interfaces(ipv6=[False, False, False, True, True])
1176
1177 # configure FIB entries
1178 route = VppIpRoute(self, "a4::", 64,
1179 [VppRoutePath(self.pg4.remote_ip6,
1180 self.pg4.sw_if_index,
1181 proto=DpoProto.DPO_PROTO_IP6)],
1182 is_ip6=1)
1183 route.add_vpp_config()
1184
1185 # configure encaps IPv6 source address
1186 # needs to be done before SR Policy config
1187 # TODO: API?
1188 self.vapi.cli("set sr encaps source addr a3::")
1189
1190 bsid = 'a3::9999:1'
1191 # configure SRv6 Policy
1192 # Note: segment list order: first -> last
1193 sr_policy = VppSRv6Policy(
1194 self, bsid=bsid,
1195 is_encap=0,
1196 sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
1197 weight=1, fib_table=0,
1198 segments=['a4::', 'a5::', 'a6::c7'],
1199 source='a3::')
1200 sr_policy.add_vpp_config()
1201 self.sr_policy = sr_policy
1202
1203 # log the sr policies
1204 self.logger.info(self.vapi.cli("show sr policies"))
1205
1206 # add classify table
1207 # mask on dst ip address prefix a7::/8
1208 mask = '{:0<16}'.format('ff')
1209 r = self.vapi.classify_add_del_table(
1210 1,
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, msg='No response msg for add_del_table')
1216 table_index = r.new_table_index
1217
1218 # add the source routign 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
1222
1223 match = '{:0<16}'.format('a7')
1224 r = self.vapi.classify_add_del_session(
1225 1,
1226 table_index,
1227 binascii.unhexlify(match),
1228 hit_next_index=inacl_next_node_index,
1229 action=3,
1230 metadata=0) # sr policy index
1231 self.assertIsNotNone(r, msg='No response msg for add_del_session')
1232
1233 # log the classify table used in the steering policy
1234 self.logger.info(self.vapi.cli("show classify table"))
1235
1236 r = self.vapi.input_acl_set_interface(
1237 is_add=1,
1238 sw_if_index=self.pg3.sw_if_index,
1239 ip6_table_index=table_index)
1240 self.assertIsNotNone(r,
1241 msg='No response msg for input_acl_set_interface')
1242
1243 # log the ip6 inacl
1244 self.logger.info(self.vapi.cli("show inacl type ip6"))
1245
1246 # create packets
1247 count = len(self.pg_packet_sizes)
1248 dst_inner = 'a7::1234'
1249 pkts = []
1250
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))
1256
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::'],
1261 segleft=1)
1262 # create traffic stream pg3->pg4
1263 pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
1264 self.pg_packet_sizes, count))
1265
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)
1269
1270 # remove the interface l2 input feature
1271 r = self.vapi.input_acl_set_interface(
1272 is_add=0,
1273 sw_if_index=self.pg3.sw_if_index,
1274 ip6_table_index=table_index)
1275 self.assertIsNotNone(r,
1276 msg='No response msg for input_acl_set_interface')
1277
1278 # log the ip6 inacl after cleaning
1279 self.logger.info(self.vapi.cli("show inacl type ip6"))
1280
1281 # log the localsid counters
1282 self.logger.info(self.vapi.cli("show sr localsid"))
1283
1284 # remove classifier SR steering
1285 # classifier_steering.remove_vpp_config()
1286 self.logger.info(self.vapi.cli("show sr steering policies"))
1287
1288 # remove SR Policies
1289 self.sr_policy.remove_vpp_config()
1290 self.logger.info(self.vapi.cli("show sr policies"))
1291
1292 # remove classify session and table
1293 r = self.vapi.classify_add_del_session(
1294 0,
1295 table_index,
1296 binascii.unhexlify(match))
1297 self.assertIsNotNone(r, msg='No response msg for add_del_session')
1298
1299 r = self.vapi.classify_add_del_table(
1300 0,
1301 binascii.unhexlify(mask),
1302 table_index=table_index)
1303 self.assertIsNotNone(r, msg='No response msg for add_del_table')
1304
1305 self.logger.info(self.vapi.cli("show classify table"))
1306
1307 # remove FIB entries
1308 # done by tearDown
1309
1310 # cleanup interfaces
1311 self.teardown_interfaces()
1312
Kris Michielsen91074432017-06-22 13:00:20 +0200[diff] [blame]1313 def compare_rx_tx_packet_T_Encaps(self, tx_pkt, rx_pkt):
1314 """ Compare input and output packet after passing T.Encaps
1315
1316 :param tx_pkt: transmitted packet
1317 :param rx_pkt: received packet
1318 """
1319 # T.Encaps updates the headers as follows:
1320 # SR Policy seglist (S3, S2, S1)
1321 # SR Policy source C
1322 # IPv6:
1323 # in: IPv6(A, B2)
1324 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(A, B2)
1325 # IPv6 + SRH:
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)
1328
1329 # get first (outer) IPv6 header of rx'ed packet
1330 rx_ip = rx_pkt.getlayer(IPv6)
1331 rx_srh = None
1332
1333 tx_ip = tx_pkt.getlayer(IPv6)
1334
1335 # expected segment-list
1336 seglist = self.sr_policy.segments
1337 # reverse list to get order as in SRH
1338 tx_seglist = seglist[::-1]
1339
1340 # get source address of SR Policy
1341 sr_policy_source = self.sr_policy.source
1342
1343 # rx'ed packet should have SRH
1344 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1345 # get SRH
1346 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1347
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)
1358
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
1363
1364 self.assertEqual(rx_srh.payload, tx_ip)
1365
1366 self.logger.debug("packet verification: SUCCESS")
1367
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
1370
1371 :param tx_pkt: transmitted packet
1372 :param rx_pkt: received packet
1373 """
1374 # T.Encaps for IPv4 updates the headers as follows:
1375 # SR Policy seglist (S3, S2, S1)
1376 # SR Policy source C
1377 # IPv4:
1378 # in: IPv4(A, B2)
1379 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv4(A, B2)
1380
1381 # get first (outer) IPv6 header of rx'ed packet
1382 rx_ip = rx_pkt.getlayer(IPv6)
1383 rx_srh = None
1384
1385 tx_ip = tx_pkt.getlayer(IP)
1386
1387 # expected segment-list
1388 seglist = self.sr_policy.segments
1389 # reverse list to get order as in SRH
1390 tx_seglist = seglist[::-1]
1391
1392 # get source address of SR Policy
1393 sr_policy_source = self.sr_policy.source
1394
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))
1399 # get SRH
1400 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1401
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)
1412
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
1418 tx_ip.chksum = None
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(str(tx_ip))
1422
1423 self.assertEqual(rx_srh.payload, tx_ip)
1424
1425 self.logger.debug("packet verification: SUCCESS")
1426
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
1429
1430 :param tx_pkt: transmitted packet
1431 :param rx_pkt: received packet
1432 """
1433 # T.Encaps for L2 updates the headers as follows:
1434 # SR Policy seglist (S3, S2, S1)
1435 # SR Policy source C
1436 # L2:
1437 # in: L2
1438 # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)L2
1439
1440 # get first (outer) IPv6 header of rx'ed packet
1441 rx_ip = rx_pkt.getlayer(IPv6)
1442 rx_srh = None
1443
1444 tx_ether = tx_pkt.getlayer(Ether)
1445
1446 # expected segment-list
1447 seglist = self.sr_policy.segments
1448 # reverse list to get order as in SRH
1449 tx_seglist = seglist[::-1]
1450
1451 # get source address of SR Policy
1452 sr_policy_source = self.sr_policy.source
1453
1454 # rx'ed packet should have SRH
1455 self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1456 # get SRH
1457 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1458
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)
1471
1472 # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
1473 self.assertEqual(Ether(str(rx_srh.payload)), tx_ether)
1474
1475 self.logger.debug("packet verification: SUCCESS")
1476
1477 def compare_rx_tx_packet_T_Insert(self, tx_pkt, rx_pkt):
1478 """ Compare input and output packet after passing T.Insert
1479
1480 :param tx_pkt: transmitted packet
1481 :param rx_pkt: received packet
1482 """
1483 # T.Insert updates the headers as follows:
1484 # IPv6:
1485 # in: IPv6(A, B2)
1486 # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)
1487 # IPv6 + SRH:
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)
1490
1491 # get first (outer) IPv6 header of rx'ed packet
1492 rx_ip = rx_pkt.getlayer(IPv6)
1493 rx_srh = None
1494 rx_ip2 = None
1495 rx_srh2 = None
1496 rx_ip3 = None
1497 rx_udp = rx_pkt[UDP]
1498
1499 tx_ip = tx_pkt.getlayer(IPv6)
1500 tx_srh = None
1501 tx_ip2 = None
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]
1508
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]
1515
1516 # get source address of SR Policy
1517 sr_policy_source = self.sr_policy.source
1518
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))
1523 # get SRH
1524 rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
1525
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])
1530
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)
1537
1538 if tx_srh: # packet was tx'ed with SRH
1539 # packet should have 2nd SRH
1540 self.assertTrue(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
1541 # get 2nd SRH
1542 rx_srh2 = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting, 2)
1543
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)
1550
1551 else: # packet was tx'ed without SRH
1552 # rx packet should have no other SRH
1553 self.assertFalse(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
1554
1555 # UDP layer should be unchanged
1556 self.assertEqual(rx_udp, tx_udp)
1557
1558 self.logger.debug("packet verification: SUCCESS")
1559
1560 def compare_rx_tx_packet_End(self, tx_pkt, rx_pkt):
1561 """ Compare input and output packet after passing End (without PSP)
1562
1563 :param tx_pkt: transmitted packet
1564 :param rx_pkt: received packet
1565 """
1566 # End (no PSP) updates the headers as follows:
1567 # IPv6 + SRH:
1568 # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
1569 # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
1570
1571 # get first (outer) IPv6 header of rx'ed packet
1572 rx_ip = rx_pkt.getlayer(IPv6)
1573 rx_srh = None
1574 rx_ip2 = None
1575 rx_udp = rx_pkt[UDP]
1576
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]
1583
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)
1589
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)
1595
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?
1611
1612 # UDP layer should be unchanged
1613 self.assertEqual(rx_udp, tx_udp)
1614
1615 self.logger.debug("packet verification: SUCCESS")
1616
1617 def compare_rx_tx_packet_End_PSP(self, tx_pkt, rx_pkt):
1618 """ Compare input and output packet after passing End with PSP
1619
1620 :param tx_pkt: transmitted packet
1621 :param rx_pkt: received packet
1622 """
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)
1629 # out: IPv6(A, S3)
1630
1631 # get first (outer) IPv6 header of rx'ed packet
1632 rx_ip = rx_pkt.getlayer(IPv6)
1633 rx_srh = None
1634 rx_ip2 = None
1635 rx_udp = rx_pkt[UDP]
1636
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]
1643
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)
1650
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)
1657
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)
1668
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])
1680
1681 # UDP layer should be unchanged
1682 self.assertEqual(rx_udp, tx_udp)
1683
1684 self.logger.debug("packet verification: SUCCESS")
1685
1686 def compare_rx_tx_packet_End_DX6(self, tx_pkt, rx_pkt):
1687 """ Compare input and output packet after passing End.DX6
1688
1689 :param tx_pkt: transmitted packet
1690 :param rx_pkt: received packet
1691 """
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)
1695 # out: IPv6(B, D)
1696 # IPv6:
1697 # in: IPv6(A, S3)IPv6(B, D)
1698 # out: IPv6(B, D)
1699
1700 # get first (outer) IPv6 header of rx'ed packet
1701 rx_ip = rx_pkt.getlayer(IPv6)
1702
1703 tx_ip = tx_pkt.getlayer(IPv6)
1704 tx_ip2 = tx_pkt.getlayer(IPv6, 2)
1705
1706 # verify if rx'ed packet has no SRH
1707 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1708
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
1713
1714 self.assertEqual(rx_ip, tx_ip2)
1715
1716 self.logger.debug("packet verification: SUCCESS")
1717
1718 def compare_rx_tx_packet_End_DX4(self, tx_pkt, rx_pkt):
1719 """ Compare input and output packet after passing End.DX4
1720
1721 :param tx_pkt: transmitted packet
1722 :param rx_pkt: received packet
1723 """
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)
1727 # out: IPv4(B, D)
1728 # IPv6:
1729 # in: IPv6(A, S3)IPv4(B, D)
1730 # out: IPv4(B, D)
1731
1732 # get IPv4 header of rx'ed packet
1733 rx_ip = rx_pkt.getlayer(IP)
1734
1735 tx_ip = tx_pkt.getlayer(IPv6)
1736 tx_ip2 = tx_pkt.getlayer(IP)
1737
1738 # verify if rx'ed packet has no SRH
1739 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1740
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(str(tx_ip2))
1750
1751 self.assertEqual(rx_ip, tx_ip2)
1752
1753 self.logger.debug("packet verification: SUCCESS")
1754
1755 def compare_rx_tx_packet_End_DX2(self, tx_pkt, rx_pkt):
1756 """ Compare input and output packet after passing End.DX2
1757
1758 :param tx_pkt: transmitted packet
1759 :param rx_pkt: received packet
1760 """
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
1764 # out: L2
1765 # IPv6:
1766 # in: IPv6(A, S3)L2
1767 # out: L2
1768
1769 # get IPv4 header of rx'ed packet
1770 rx_eth = rx_pkt.getlayer(Ether)
1771
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(str(tx_pkt[Raw]))
1776
1777 # verify if rx'ed packet has no SRH
1778 self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
1779
1780 # the whole rx_eth pkt should be equal to tx_eth1
1781 self.assertEqual(rx_eth, tx_eth1)
1782
1783 self.logger.debug("packet verification: SUCCESS")
1784
1785 def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
1786 count):
1787 """Create SRv6 input packet stream for defined interface.
1788
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
1798 """
1799 self.logger.info("Creating packets")
1800 pkts = []
1801 for i in range(0, count-1):
1802 payload_info = self.create_packet_info(src_if, dst_if)
1803 self.logger.debug(
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 /
1809 Raw(payload))
1810 else:
1811 p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
1812 packet_header /
1813 Raw(payload))
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(str(p))
1822 payload_info.data = p.copy()
1823 self.logger.debug(ppp("Created packet:", p))
1824 pkts.append(p)
1825 self.logger.info("Done creating packets")
1826 return pkts
1827
1828 def send_and_verify_pkts(self, input, pkts, output, compare_func):
1829 """Send packets and verify received packets using compare_func
1830
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
1835 """
1836 # add traffic stream to input interface
1837 input.add_stream(pkts)
1838
1839 # enable capture on all interfaces
1840 self.pg_enable_capture(self.pg_interfaces)
1841
1842 # start traffic
1843 self.logger.info("Starting traffic")
1844 self.pg_start()
1845
1846 # get output capture
1847 self.logger.info("Getting packet capture")
1848 capture = output.get_capture()
1849
1850 # assert nothing was captured on input interface
1851 input.assert_nothing_captured()
1852
1853 # verify captured packets
1854 self.verify_captured_pkts(output, capture, compare_func)
1855
1856 def create_packet_header_IPv6(self, dst):
1857 """Create packet header: IPv6 header, UDP header
1858
1859 :param dst: IPv6 destination address
1860
1861 IPv6 source address is 1234::1
1862 UDP source port and destination port are 1234
1863 """
1864
1865 p = (IPv6(src='1234::1', dst=dst) /
1866 UDP(sport=1234, dport=1234))
1867 return p
1868
1869 def create_packet_header_IPv6_SRH(self, sidlist, segleft):
1870 """Create packet header: IPv6 header with SRH, UDP header
1871
1872 :param list sidlist: segment list
1873 :param int segleft: segments-left field value
1874
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
1878 """
1879
1880 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
1881 IPv6ExtHdrSegmentRouting(addresses=sidlist) /
1882 UDP(sport=1234, dport=1234))
1883 return p
1884
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
1888
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
1892
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
1896 """
1897
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))
1903 return p
1904
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
1908
1909 :param ipv6address dst_inner: inner IPv6 destination address
1910 :param ipv6address dst_outer: outer IPv6 destination address
1911
1912 IPv6 source addresses are 1234::1 and 4321::1
1913 UDP source port and destination port are 1234
1914 """
1915
1916 p = (IPv6(src='1234::1', dst=dst_outer) /
1917 IPv6(src='4321::1', dst=dst_inner) /
1918 UDP(sport=1234, dport=1234))
1919 return p
1920
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
1925
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
1931
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
1935 """
1936
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))
1944 return p
1945
1946 def create_packet_header_IPv4(self, dst):
1947 """Create packet header: IPv4 header, UDP header
1948
1949 :param dst: IPv4 destination address
1950
1951 IPv4 source address is 123.1.1.1
1952 UDP source port and destination port are 1234
1953 """
1954
1955 p = (IP(src='123.1.1.1', dst=dst) /
1956 UDP(sport=1234, dport=1234))
1957 return p
1958
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
1962
1963 :param ipv4address dst_inner: inner IPv4 destination address
1964 :param ipv6address dst_outer: outer IPv6 destination address
1965
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
1969 """
1970
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))
1974 return p
1975
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
1979
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
1983
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
1988 """
1989
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))
1995 return p
1996
1997 def create_packet_header_L2(self, vlan=0):
1998 """Create packet header: L2 header
1999
2000 :param vlan: if vlan!=0 then add 802.1q header
2001 """
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
2007 if vlan:
2008 # add 802.1q layer
2009 p /= Dot1Q(vlan=vlan, type=etype)
2010 else:
2011 p.type = etype
2012 return p
2013
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
2017
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
2021
2022 Outer IPv6 destination address is set to sidlist[segleft]
2023 IPv6 source address is 1234::1
2024 """
2025 eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2026 etype = 0x8137 # IPX
2027 if vlan:
2028 # add 802.1q layer
2029 eth /= Dot1Q(vlan=vlan, type=etype)
2030 else:
2031 eth.type = etype
2032
2033 p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
2034 IPv6ExtHdrSegmentRouting(addresses=sidlist,
2035 segleft=segleft, nh=59) /
2036 eth)
2037 return p
2038
2039 def create_packet_header_IPv6_L2(self, dst_outer, vlan=0):
2040 """Create packet header: L2 encapsulated in IPv6:
2041 IPv6 header, L2
2042
2043 :param ipv6address dst_outer: outer IPv6 destination address
2044 :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
2045 """
2046 eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
2047 etype = 0x8137 # IPX
2048 if vlan:
2049 # add 802.1q layer
2050 eth /= Dot1Q(vlan=vlan, type=etype)
2051 else:
2052 eth.type = etype
2053
2054 p = (IPv6(src='1234::1', dst=dst_outer, nh=59) / eth)
2055 return p
2056
2057 def get_payload_info(self, packet):
2058 """ Extract the payload_info from the packet
2059 """
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
2063 try:
2064 payload_info = self.payload_to_info(str(packet[Raw]))
2065
2066 except:
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 str(Ether(str(packet[Raw]))[Raw]))
2072
2073 return payload_info
2074
2075 def verify_captured_pkts(self, dst_if, capture, compare_func):
2076 """
2077 Verify captured packet stream for specified interface.
2078 Compare ingress with egress packets using the specified compare fn
2079
2080 :param dst_if: egress interface of DUT
2081 :param capture: captured packets
2082 :param compare_func: function to compare in and out packet
2083 """
2084 self.logger.info("Verifying capture on interface %s using function %s"
2085 % (dst_if.name, compare_func.func_name))
2086
2087 last_info = dict()
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
2091
2092 for packet in capture:
2093 try:
2094 # extract payload_info from packet's payload
2095 payload_info = self.get_payload_info(packet)
2096 packet_index = payload_info.index
2097
2098 self.logger.debug("Verifying packet with index %d"
2099 % (packet_index))
2100 # packet should have arrived on the expected interface
2101 self.assertEqual(payload_info.dst, dst_sw_if_index)
2102 self.logger.debug(
2103 "Got packet on interface %s: src=%u (idx=%u)" %
2104 (dst_if.name, payload_info.src, packet_index))
2105
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
2118
2119 self.logger.debug(ppp("Transmitted packet:",
2120 txed_packet)) # ppp=Pretty Print Packet
2121
2122 self.logger.debug(ppp("Received packet:", packet))
2123
2124 # compare rcvd packet with expected packet using compare_func
2125 compare_func(txed_packet, packet)
2126
2127 except:
2128 print packet.command()
2129 self.logger.error(ppp("Unexpected or invalid packet:", packet))
2130 raise
2131
2132 # have all expected packets arrived?
2133 for i in self.pg_interfaces:
2134 remaining_packet = self.get_next_packet_info_for_interface2(
2135 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
2136 self.assertTrue(remaining_packet is None,
2137 "Interface %s: Packet expected from interface %s "
2138 "didn't arrive" % (dst_if.name, i.name))
2139
2140
2141if __name__ == '__main__':
2142 unittest.main(testRunner=VppTestRunner)