6 from framework import VppTestCase, VppTestRunner
7 from vpp_ip import DpoProto
8 from vpp_ip_route import VppIpRoute, VppRoutePath
9 from util import fragment_rfc791, fragment_rfc8200
12 from scapy.layers.l2 import Ether
13 from scapy.packet import Raw
14 from scapy.layers.inet import IP, UDP, ICMP, TCP
15 from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, IPv6ExtHdrFragment, \
16 ICMPv6EchoRequest, ICMPv6DestUnreach
19 class TestMAP(VppTestCase):
24 super(TestMAP, cls).setUpClass()
27 def tearDownClass(cls):
28 super(TestMAP, cls).tearDownClass()
31 super(TestMAP, self).setUp()
33 # create 2 pg interfaces
34 self.create_pg_interfaces(range(4))
36 # pg0 is 'inside' IPv4
39 self.pg0.resolve_arp()
40 self.pg0.generate_remote_hosts(2)
41 self.pg0.configure_ipv4_neighbors()
43 # pg1 is 'outside' IPv6
46 self.pg1.generate_remote_hosts(4)
47 self.pg1.configure_ipv6_neighbors()
50 super(TestMAP, self).tearDown()
51 for i in self.pg_interfaces:
56 def send_and_assert_encapped(self, packets, ip6_src, ip6_dst, dmac=None):
58 dmac = self.pg1.remote_mac
60 self.pg0.add_stream(packets)
62 self.pg_enable_capture(self.pg_interfaces)
65 capture = self.pg1.get_capture(len(packets))
66 for rx, tx in zip(capture, packets):
67 self.assertEqual(rx[Ether].dst, dmac)
68 self.assertEqual(rx[IP].src, tx[IP].src)
69 self.assertEqual(rx[IPv6].src, ip6_src)
70 self.assertEqual(rx[IPv6].dst, ip6_dst)
72 def send_and_assert_encapped_one(self, packet, ip6_src, ip6_dst,
74 return self.send_and_assert_encapped([packet], ip6_src, ip6_dst, dmac)
76 def test_api_map_domain_dump(self):
78 map_src = '3000::1/128'
79 client_pfx = '192.168.0.0/16'
81 index = self.vapi.map_add_domain(ip4_prefix=client_pfx,
85 rv = self.vapi.map_domain_dump()
87 # restore the state early so as to not impact subsequent tests.
88 # If an assert fails, we will not get the chance to do it at the end.
89 self.vapi.map_del_domain(index=index)
91 self.assertGreater(len(rv), 0,
92 "Expected output from 'map_domain_dump'")
94 # typedefs are returned as ipaddress objects.
95 # wrap results in str() ugh! to avoid the need to call unicode.
96 self.assertEqual(str(rv[0].ip4_prefix), client_pfx)
97 self.assertEqual(str(rv[0].ip6_prefix), map_dst)
98 self.assertEqual(str(rv[0].ip6_src), map_src)
100 self.assertEqual(rv[0].tag, tag,
101 "output produced incorrect tag value.")
103 def create_domains(self, ip4_pfx_str, ip6_pfx_str, ip6_src_str):
104 ip4_pfx = ipaddress.ip_network(ip4_pfx_str)
105 ip6_dst = ipaddress.ip_network(ip6_pfx_str)
106 mod = ip4_pfx.num_addresses / 1024
108 for i in range(ip4_pfx.num_addresses):
109 rv = self.vapi.map_add_domain(ip6_prefix=ip6_pfx_str,
110 ip4_prefix=str(ip4_pfx[i]) + "/32",
112 indicies.append(rv.index)
115 def test_api_map_domains_get(self):
116 # Create a bunch of domains
117 no_domains = 4096 # This must be large enough to ensure VPP suspends
118 domains = self.create_domains('130.67.0.0/20', '2001::/32',
120 self.assertEqual(len(domains), no_domains)
126 rv, details = self.vapi.map_domains_get(cursor=no_domains+10)
127 self.assertEqual(rv.retval, -7)
129 # Delete a domain in the middle of walk
130 rv, details = self.vapi.map_domains_get(cursor=0)
131 self.assertEqual(rv.retval, -165)
132 self.vapi.map_del_domain(index=rv.cursor)
133 domains.remove(rv.cursor)
135 # Continue at point of deleted cursor
136 rv, details = self.vapi.map_domains_get(cursor=rv.cursor)
137 self.assertIn(rv.retval, [0, -165])
139 d = list(self.vapi.vpp.details_iter(self.vapi.map_domains_get))
140 self.assertEqual(len(d), no_domains - 1)
144 self.vapi.map_del_domain(index=i)
146 def test_map_e_udp(self):
150 # Add a route to the MAP-BR
152 map_br_pfx = "2001::"
154 map_route = VppIpRoute(self,
157 [VppRoutePath(self.pg1.remote_ip6,
158 self.pg1.sw_if_index)])
159 map_route.add_vpp_config()
162 # Add a domain that maps from pg0 to pg1
164 map_dst = '2001::/32'
165 map_src = '3000::1/128'
166 client_pfx = '192.168.0.0/16'
167 map_translated_addr = '2001:0:101:7000:0:c0a8:101:7'
169 self.vapi.map_add_domain(ip4_prefix=client_pfx,
177 self.vapi.map_param_set_security_check(enable=1, fragments=1)
179 # Enable MAP on interface.
180 self.vapi.map_if_enable_disable(is_enable=1,
181 sw_if_index=self.pg0.sw_if_index,
184 # Ensure MAP doesn't steal all packets!
185 v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
186 IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
187 UDP(sport=20000, dport=10000) /
189 rx = self.send_and_expect(self.pg0, v4 * 4, self.pg0)
193 self.validate(p[1], v4_reply)
196 # Fire in a v4 packet that will be encapped to the BR
198 v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
199 IP(src=self.pg0.remote_ip4, dst='192.168.1.1') /
200 UDP(sport=20000, dport=10000) /
203 self.send_and_assert_encapped(v4 * 4, "3000::1", map_translated_addr)
206 # Verify reordered fragments are able to pass as well
208 v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
209 IP(id=1, src=self.pg0.remote_ip4, dst='192.168.1.1') /
210 UDP(sport=20000, dport=10000) /
213 frags = fragment_rfc791(v4, 400)
216 self.send_and_assert_encapped(frags, "3000::1", map_translated_addr)
218 # Enable MAP on interface.
219 self.vapi.map_if_enable_disable(is_enable=1,
220 sw_if_index=self.pg1.sw_if_index,
223 # Ensure MAP doesn't steal all packets
224 v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
225 IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
226 UDP(sport=20000, dport=10000) /
228 rx = self.send_and_expect(self.pg1, v6*1, self.pg1)
232 self.validate(p[1], v6_reply)
235 # Fire in a V6 encapped packet.
236 # expect a decapped packet on the inside ip4 link
238 p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
239 IPv6(dst='3000::1', src=map_translated_addr) /
240 IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
241 UDP(sport=10000, dport=20000) /
244 self.pg1.add_stream(p)
246 self.pg_enable_capture(self.pg_interfaces)
249 rx = self.pg0.get_capture(1)
252 self.assertFalse(rx.haslayer(IPv6))
253 self.assertEqual(rx[IP].src, p[IP].src)
254 self.assertEqual(rx[IP].dst, p[IP].dst)
257 # Verify encapped reordered fragments pass as well
259 p = (IP(id=1, dst=self.pg0.remote_ip4, src='192.168.1.1') /
260 UDP(sport=10000, dport=20000) /
262 frags = fragment_rfc791(p, 400)
265 stream = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
266 IPv6(dst='3000::1', src=map_translated_addr) /
269 self.pg1.add_stream(stream)
271 self.pg_enable_capture(self.pg_interfaces)
274 rx = self.pg0.get_capture(len(frags))
277 self.assertFalse(r.haslayer(IPv6))
278 self.assertEqual(r[IP].src, p[IP].src)
279 self.assertEqual(r[IP].dst, p[IP].dst)
281 # Verify that fragments pass even if ipv6 layer is fragmented
282 stream = (IPv6(dst='3000::1', src=map_translated_addr) / x
286 Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / x
287 for i in range(len(frags))
288 for x in fragment_rfc8200(
289 IPv6(dst='3000::1', src=map_translated_addr) / frags[i],
292 self.pg1.add_stream(v6_stream)
294 self.pg_enable_capture(self.pg_interfaces)
297 rx = self.pg0.get_capture(len(frags))
300 self.assertFalse(r.haslayer(IPv6))
301 self.assertEqual(r[IP].src, p[IP].src)
302 self.assertEqual(r[IP].dst, p[IP].dst)
305 # Pre-resolve. No API for this!!
307 self.vapi.ppcli("map params pre-resolve ip6-nh 4001::1")
309 self.send_and_assert_no_replies(self.pg0, v4,
310 "resolved via default route")
313 # Add a route to 4001::1. Expect the encapped traffic to be
314 # sent via that routes next-hop
316 pre_res_route = VppIpRoute(self, "4001::1", 128,
317 [VppRoutePath(self.pg1.remote_hosts[2].ip6,
318 self.pg1.sw_if_index)])
319 pre_res_route.add_vpp_config()
321 self.send_and_assert_encapped_one(v4, "3000::1",
323 dmac=self.pg1.remote_hosts[2].mac)
326 # change the route to the pre-solved next-hop
328 pre_res_route.modify([VppRoutePath(self.pg1.remote_hosts[3].ip6,
329 self.pg1.sw_if_index)])
330 pre_res_route.add_vpp_config()
332 self.send_and_assert_encapped_one(v4, "3000::1",
334 dmac=self.pg1.remote_hosts[3].mac)
337 # cleanup. The test infra's object registry will ensure
338 # the route is really gone and thus that the unresolve worked.
340 pre_res_route.remove_vpp_config()
341 self.vapi.ppcli("map params pre-resolve del ip6-nh 4001::1")
343 def test_map_e_inner_frag(self):
344 """ MAP-E Inner fragmentation """
347 # Add a route to the MAP-BR
349 map_br_pfx = "2001::"
351 map_route = VppIpRoute(self,
354 [VppRoutePath(self.pg1.remote_ip6,
355 self.pg1.sw_if_index)])
356 map_route.add_vpp_config()
359 # Add a domain that maps from pg0 to pg1
361 map_dst = '2001::/32'
362 map_src = '3000::1/128'
363 client_pfx = '192.168.0.0/16'
364 map_translated_addr = '2001:0:101:7000:0:c0a8:101:7'
366 self.vapi.map_add_domain(ip4_prefix=client_pfx,
375 # Enable MAP on interface.
376 self.vapi.map_if_enable_disable(is_enable=1,
377 sw_if_index=self.pg0.sw_if_index,
380 # Enable inner fragmentation
381 self.vapi.map_param_set_fragmentation(inner=1)
383 v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
384 IP(src=self.pg0.remote_ip4, dst='192.168.1.1') /
385 UDP(sport=20000, dport=10000) /
388 self.pg_send(self.pg0, v4*1)
389 rx = self.pg1.get_capture(2)
391 frags = fragment_rfc791(v4[1], 1000)
399 v6_reply1 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) /
401 v6_reply2 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) /
407 rx[0][1][IP].chksum = 0
408 rx[1][1][IP].chksum = 0
410 self.validate(rx[0][1], v6_reply1)
411 self.validate(rx[1][1], v6_reply2)
413 def test_map_e_tcp_mss(self):
417 # Add a route to the MAP-BR
419 map_br_pfx = "2001::"
421 map_route = VppIpRoute(self,
424 [VppRoutePath(self.pg1.remote_ip6,
425 self.pg1.sw_if_index)])
426 map_route.add_vpp_config()
429 # Add a domain that maps from pg0 to pg1
431 map_dst = '2001::/32'
432 map_src = '3000::1/128'
433 client_pfx = '192.168.0.0/16'
434 map_translated_addr = '2001:0:101:5000:0:c0a8:101:5'
435 tag = 'MAP-E TCP tag.'
436 self.vapi.map_add_domain(ip4_prefix=client_pfx,
444 # Enable MAP on pg0 interface.
445 self.vapi.map_if_enable_disable(is_enable=1,
446 sw_if_index=self.pg0.sw_if_index,
449 # Enable MAP on pg1 interface.
450 self.vapi.map_if_enable_disable(is_enable=1,
451 sw_if_index=self.pg1.sw_if_index,
456 self.vapi.map_param_set_tcp(mss_clamp)
459 # Send a v4 packet that will be encapped.
461 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
462 p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.1.1')
463 p_tcp = TCP(sport=20000, dport=30000, flags="S",
464 options=[("MSS", 1455)])
465 p4 = p_ether / p_ip4 / p_tcp
467 self.pg1.add_stream(p4)
468 self.pg_enable_capture(self.pg_interfaces)
471 rx = self.pg1.get_capture(1)
474 self.assertTrue(rx.haslayer(IPv6))
475 self.assertEqual(rx[IP].src, p4[IP].src)
476 self.assertEqual(rx[IP].dst, p4[IP].dst)
477 self.assertEqual(rx[IPv6].src, "3000::1")
478 self.assertEqual(rx[TCP].options,
479 TCP(options=[('MSS', mss_clamp)]).options)
481 def validate(self, rx, expected):
482 self.assertEqual(rx, expected.__class__(scapy.compat.raw(expected)))
484 def validate_frag6(self, p6_frag, p_ip6_expected):
485 self.assertFalse(p6_frag.haslayer(IP))
486 self.assertTrue(p6_frag.haslayer(IPv6))
487 self.assertTrue(p6_frag.haslayer(IPv6ExtHdrFragment))
488 self.assertEqual(p6_frag[IPv6].src, p_ip6_expected.src)
489 self.assertEqual(p6_frag[IPv6].dst, p_ip6_expected.dst)
491 def validate_frag_payload_len6(self, rx, proto, payload_len_expected):
494 payload_total += p[IPv6].plen
496 # First fragment has proto
497 payload_total -= len(proto())
499 # Every fragment has IPv6 fragment header
500 payload_total -= len(IPv6ExtHdrFragment()) * len(rx)
502 self.assertEqual(payload_total, payload_len_expected)
504 def validate_frag4(self, p4_frag, p_ip4_expected):
505 self.assertFalse(p4_frag.haslayer(IPv6))
506 self.assertTrue(p4_frag.haslayer(IP))
507 self.assertTrue(p4_frag[IP].frag != 0 or p4_frag[IP].flags.MF)
508 self.assertEqual(p4_frag[IP].src, p_ip4_expected.src)
509 self.assertEqual(p4_frag[IP].dst, p_ip4_expected.dst)
511 def validate_frag_payload_len4(self, rx, proto, payload_len_expected):
514 payload_total += len(p[IP].payload)
516 # First fragment has proto
517 payload_total -= len(proto())
519 self.assertEqual(payload_total, payload_len_expected)
521 def payload(self, len):
524 def test_map_t(self):
528 # Add a domain that maps from pg0 to pg1
530 map_dst = '2001:db8::/32'
531 map_src = '1234:5678:90ab:cdef::/64'
532 ip4_pfx = '192.168.0.0/24'
535 self.vapi.map_add_domain(ip6_prefix=map_dst,
544 # Enable MAP-T on interfaces.
545 self.vapi.map_if_enable_disable(is_enable=1,
546 sw_if_index=self.pg0.sw_if_index,
548 self.vapi.map_if_enable_disable(is_enable=1,
549 sw_if_index=self.pg1.sw_if_index,
552 # Ensure MAP doesn't steal all packets!
553 v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
554 IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
555 UDP(sport=20000, dport=10000) /
557 rx = self.send_and_expect(self.pg0, v4*1, self.pg0)
561 self.validate(p[1], v4_reply)
562 # Ensure MAP doesn't steal all packets
563 v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
564 IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
565 UDP(sport=20000, dport=10000) /
567 rx = self.send_and_expect(self.pg1, v6*1, self.pg1)
571 self.validate(p[1], v6_reply)
573 map_route = VppIpRoute(self,
576 [VppRoutePath(self.pg1.remote_ip6,
577 self.pg1.sw_if_index,
578 proto=DpoProto.DPO_PROTO_IP6)])
579 map_route.add_vpp_config()
582 # Send a v4 packet that will be translated
584 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
585 p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
586 payload = TCP(sport=0xabcd, dport=0xabcd)
588 p4 = (p_ether / p_ip4 / payload)
589 p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0",
590 dst="2001:db8:1f0::c0a8:1:f") / payload)
591 p6_translated.hlim -= 1
592 rx = self.send_and_expect(self.pg0, p4*1, self.pg1)
594 self.validate(p[1], p6_translated)
596 # Send back an IPv6 packet that will be "untranslated"
597 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
598 p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
599 dst='1234:5678:90ab:cdef:ac:1001:200:0')
600 p6 = (p_ether6 / p_ip6 / payload)
601 p4_translated = (IP(src='192.168.0.1',
602 dst=self.pg0.remote_ip4) / payload)
604 p4_translated.ttl -= 1
605 rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
607 self.validate(p[1], p4_translated)
610 ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=0)
611 p4 = (p_ether / ip4_ttl_expired / payload)
613 icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4,
614 dst=self.pg0.remote_ip4) /
615 ICMP(type='time-exceeded',
616 code='ttl-zero-during-transit') /
617 IP(src=self.pg0.remote_ip4,
618 dst='192.168.0.1', ttl=0) / payload)
619 rx = self.send_and_expect(self.pg0, p4*1, self.pg0)
621 self.validate(p[1], icmp4_reply)
624 ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=1)
625 p4 = (p_ether / ip4_ttl_expired / payload)
627 icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4,
628 dst=self.pg0.remote_ip4) /
629 ICMP(type='time-exceeded',
630 code='ttl-zero-during-transit') /
631 IP(src=self.pg0.remote_ip4,
632 dst='192.168.0.1', ttl=1) / payload)
633 rx = self.send_and_expect(self.pg0, p4*1, self.pg0)
635 self.validate(p[1], icmp4_reply)
637 # IPv6 Hop limit at BR
638 ip6_hlim_expired = IPv6(hlim=1, src='2001:db8:1ab::c0a8:1:ab',
639 dst='1234:5678:90ab:cdef:ac:1001:200:0')
640 p6 = (p_ether6 / ip6_hlim_expired / payload)
642 icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6,
643 dst="2001:db8:1ab::c0a8:1:ab") /
644 ICMPv6TimeExceeded(code=0) /
645 IPv6(src="2001:db8:1ab::c0a8:1:ab",
646 dst='1234:5678:90ab:cdef:ac:1001:200:0',
648 rx = self.send_and_expect(self.pg1, p6*1, self.pg1)
650 self.validate(p[1], icmp6_reply)
652 # IPv6 Hop limit beyond BR
653 ip6_hlim_expired = IPv6(hlim=0, src='2001:db8:1ab::c0a8:1:ab',
654 dst='1234:5678:90ab:cdef:ac:1001:200:0')
655 p6 = (p_ether6 / ip6_hlim_expired / payload)
657 icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6,
658 dst="2001:db8:1ab::c0a8:1:ab") /
659 ICMPv6TimeExceeded(code=0) /
660 IPv6(src="2001:db8:1ab::c0a8:1:ab",
661 dst='1234:5678:90ab:cdef:ac:1001:200:0',
663 rx = self.send_and_expect(self.pg1, p6*1, self.pg1)
665 self.validate(p[1], icmp6_reply)
667 # IPv4 Well-known port
668 p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
669 payload = UDP(sport=200, dport=200)
670 p4 = (p_ether / p_ip4 / payload)
671 self.send_and_assert_no_replies(self.pg0, p4*1)
673 # IPv6 Well-known port
674 payload = UDP(sport=200, dport=200)
675 p6 = (p_ether6 / p_ip6 / payload)
676 self.send_and_assert_no_replies(self.pg1, p6*1)
678 # UDP packet fragmentation
680 payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
681 p4 = (p_ether / p_ip4 / payload)
682 self.pg_enable_capture()
683 self.pg0.add_stream(p4)
685 rx = self.pg1.get_capture(2)
687 p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0',
688 dst='2001:db8:1e0::c0a8:1:e')
690 self.validate_frag6(p, p_ip6_translated)
692 self.validate_frag_payload_len6(rx, UDP, payload_len)
694 # UDP packet fragmentation send fragments
696 payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
697 p4 = (p_ether / p_ip4 / payload)
698 frags = fragment_rfc791(p4, fragsize=1000)
699 self.pg_enable_capture()
700 self.pg0.add_stream(frags)
702 rx = self.pg1.get_capture(2)
705 self.validate_frag6(p, p_ip6_translated)
707 self.validate_frag_payload_len6(rx, UDP, payload_len)
709 # Send back an fragmented IPv6 UDP packet that will be "untranslated"
710 payload = UDP(sport=4000, dport=40000) / self.payload(payload_len)
711 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
712 p_ip6 = IPv6(src='2001:db8:1e0::c0a8:1:e',
713 dst='1234:5678:90ab:cdef:ac:1001:200:0')
714 p6 = (p_ether6 / p_ip6 / payload)
715 frags6 = fragment_rfc8200(p6, identification=0xdcba, fragsize=1000)
717 p_ip4_translated = IP(src='192.168.0.1', dst=self.pg0.remote_ip4)
718 p4_translated = (p_ip4_translated / payload)
720 p4_translated.ttl -= 1
722 self.pg_enable_capture()
723 self.pg1.add_stream(frags6)
725 rx = self.pg0.get_capture(2)
728 self.validate_frag4(p, p4_translated)
730 self.validate_frag_payload_len4(rx, UDP, payload_len)
732 # ICMP packet fragmentation
733 payload = ICMP(id=6529) / self.payload(payload_len)
734 p4 = (p_ether / p_ip4 / payload)
735 self.pg_enable_capture()
736 self.pg0.add_stream(p4)
738 rx = self.pg1.get_capture(2)
740 p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0',
741 dst='2001:db8:160::c0a8:1:6')
743 self.validate_frag6(p, p_ip6_translated)
745 self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
747 # ICMP packet fragmentation send fragments
748 payload = ICMP(id=6529) / self.payload(payload_len)
749 p4 = (p_ether / p_ip4 / payload)
750 frags = fragment_rfc791(p4, fragsize=1000)
751 self.pg_enable_capture()
752 self.pg0.add_stream(frags)
754 rx = self.pg1.get_capture(2)
757 self.validate_frag6(p, p_ip6_translated)
759 self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
762 self.vapi.map_param_set_tcp(1300)
765 # Send a v4 TCP SYN packet that will be translated and MSS clamped
767 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
768 p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
769 payload = TCP(sport=0xabcd, dport=0xabcd, flags="S",
770 options=[('MSS', 1460)])
772 p4 = (p_ether / p_ip4 / payload)
773 p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0",
774 dst="2001:db8:1f0::c0a8:1:f") / payload)
775 p6_translated.hlim -= 1
776 p6_translated[TCP].options = [('MSS', 1300)]
777 rx = self.send_and_expect(self.pg0, p4*1, self.pg1)
779 self.validate(p[1], p6_translated)
781 # Send back an IPv6 packet that will be "untranslated"
782 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
783 p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
784 dst='1234:5678:90ab:cdef:ac:1001:200:0')
785 p6 = (p_ether6 / p_ip6 / payload)
786 p4_translated = (IP(src='192.168.0.1',
787 dst=self.pg0.remote_ip4) / payload)
789 p4_translated.ttl -= 1
790 p4_translated[TCP].options = [('MSS', 1300)]
791 rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
793 self.validate(p[1], p4_translated)
795 # TCP MSS clamping cleanup
796 self.vapi.map_param_set_tcp(0)
798 # Enable icmp6 param to get back ICMPv6 unreachable messages in case
799 # of security check fails
800 self.vapi.map_param_set_icmp6(enable_unreachable=1)
802 # Send back an IPv6 packet that will be droppped due to security
804 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
805 p_ip6_sec_check_fail = IPv6(src='2001:db8:1fe::c0a8:1:f',
806 dst='1234:5678:90ab:cdef:ac:1001:200:0')
807 payload = TCP(sport=0xabcd, dport=0xabcd)
808 p6 = (p_ether6 / p_ip6_sec_check_fail / payload)
810 self.pg_send(self.pg1, p6*1)
811 self.pg0.get_capture(0, timeout=1)
812 rx = self.pg1.get_capture(1)
814 icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6,
815 dst='2001:db8:1fe::c0a8:1:f') /
816 ICMPv6DestUnreach(code=5) /
817 p_ip6_sec_check_fail / payload)
820 self.validate(p[1], icmp6_reply)
822 # ICMPv6 unreachable messages cleanup
823 self.vapi.map_param_set_icmp6(enable_unreachable=0)
825 def test_map_t_ip6_psid(self):
826 """ MAP-T v6->v4 PSID validation"""
829 # Add a domain that maps from pg0 to pg1
831 map_dst = '2001:db8::/32'
832 map_src = '1234:5678:90ab:cdef::/64'
833 ip4_pfx = '192.168.0.0/24'
834 tag = 'MAP-T Test Domain'
836 self.vapi.map_add_domain(ip6_prefix=map_dst,
845 # Enable MAP-T on interfaces.
846 self.vapi.map_if_enable_disable(is_enable=1,
847 sw_if_index=self.pg0.sw_if_index,
849 self.vapi.map_if_enable_disable(is_enable=1,
850 sw_if_index=self.pg1.sw_if_index,
853 map_route = VppIpRoute(self,
856 [VppRoutePath(self.pg1.remote_ip6,
857 self.pg1.sw_if_index,
858 proto=DpoProto.DPO_PROTO_IP6)])
859 map_route.add_vpp_config()
861 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
862 p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
863 dst='1234:5678:90ab:cdef:ac:1001:200:0')
865 # Send good IPv6 source port, ensure translated IPv4 received
866 payload = TCP(sport=0xabcd, dport=80)
867 p6 = (p_ether6 / p_ip6 / payload)
868 p4_translated = (IP(src='192.168.0.1',
869 dst=self.pg0.remote_ip4) / payload)
871 p4_translated.ttl -= 1
872 rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
874 self.validate(p[1], p4_translated)
876 # Send bad IPv6 source port, ensure translated IPv4 not received
877 payload = TCP(sport=0xdcba, dport=80)
878 p6 = (p_ether6 / p_ip6 / payload)
879 self.send_and_assert_no_replies(self.pg1, p6*1)
881 def test_map_t_pre_resolve(self):
882 """ MAP-T pre-resolve"""
884 # Add a domain that maps from pg0 to pg1
885 map_dst = '2001:db8::/32'
886 map_src = '1234:5678:90ab:cdef::/64'
887 ip4_pfx = '192.168.0.0/24'
888 tag = 'MAP-T Test Domain.'
890 self.vapi.map_add_domain(ip6_prefix=map_dst,
899 # Enable MAP-T on interfaces.
900 self.vapi.map_if_enable_disable(is_enable=1,
901 sw_if_index=self.pg0.sw_if_index,
903 self.vapi.map_if_enable_disable(is_enable=1,
904 sw_if_index=self.pg1.sw_if_index,
907 # Enable pre-resolve option
908 self.vapi.map_param_add_del_pre_resolve(ip4_nh_address="10.1.2.3",
909 ip6_nh_address="4001::1",
912 # Add a route to 4001::1 and expect the translated traffic to be
913 # sent via that route next-hop.
914 pre_res_route6 = VppIpRoute(self, "4001::1", 128,
915 [VppRoutePath(self.pg1.remote_hosts[2].ip6,
916 self.pg1.sw_if_index)])
917 pre_res_route6.add_vpp_config()
919 # Add a route to 10.1.2.3 and expect the "untranslated" traffic to be
920 # sent via that route next-hop.
921 pre_res_route4 = VppIpRoute(self, "10.1.2.3", 32,
922 [VppRoutePath(self.pg0.remote_hosts[1].ip4,
923 self.pg0.sw_if_index)])
924 pre_res_route4.add_vpp_config()
926 # Send an IPv4 packet that will be translated
927 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
928 p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1')
929 payload = TCP(sport=0xabcd, dport=0xabcd)
930 p4 = (p_ether / p_ip4 / payload)
932 p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0",
933 dst="2001:db8:1f0::c0a8:1:f") / payload)
934 p6_translated.hlim -= 1
936 rx = self.send_and_expect(self.pg0, p4*1, self.pg1)
938 self.assertEqual(p[Ether].dst, self.pg1.remote_hosts[2].mac)
939 self.validate(p[1], p6_translated)
941 # Send back an IPv6 packet that will be "untranslated"
942 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
943 p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f',
944 dst='1234:5678:90ab:cdef:ac:1001:200:0')
945 p6 = (p_ether6 / p_ip6 / payload)
947 p4_translated = (IP(src='192.168.0.1',
948 dst=self.pg0.remote_ip4) / payload)
950 p4_translated.ttl -= 1
952 rx = self.send_and_expect(self.pg1, p6*1, self.pg0)
954 self.assertEqual(p[Ether].dst, self.pg0.remote_hosts[1].mac)
955 self.validate(p[1], p4_translated)
957 # Cleanup pre-resolve option
958 self.vapi.map_param_add_del_pre_resolve(ip4_nh_address="10.1.2.3",
959 ip6_nh_address="4001::1",
963 if __name__ == '__main__':
964 unittest.main(testRunner=VppTestRunner)