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 (
24 class TestMAP(VppTestCase):
29 super(TestMAP, cls).setUpClass()
32 def tearDownClass(cls):
33 super(TestMAP, cls).tearDownClass()
36 super(TestMAP, self).setUp()
38 # create 2 pg interfaces
39 self.create_pg_interfaces(range(4))
41 # pg0 is 'inside' IPv4
44 self.pg0.resolve_arp()
45 self.pg0.generate_remote_hosts(2)
46 self.pg0.configure_ipv4_neighbors()
48 # pg1 is 'outside' IPv6
51 self.pg1.generate_remote_hosts(4)
52 self.pg1.configure_ipv6_neighbors()
55 super(TestMAP, self).tearDown()
57 for i in self.pg_interfaces:
59 self.vapi.map_if_enable_disable(
60 is_enable=0, sw_if_index=i.sw_if_index, is_translation=t
66 def send_and_assert_encapped(self, packets, ip6_src, ip6_dst, dmac=None):
68 dmac = self.pg1.remote_mac
70 self.pg0.add_stream(packets)
72 self.pg_enable_capture(self.pg_interfaces)
75 capture = self.pg1.get_capture(len(packets))
76 for rx, tx in zip(capture, packets):
77 self.assertEqual(rx[Ether].dst, dmac)
78 self.assertEqual(rx[IP].src, tx[IP].src)
79 self.assertEqual(rx[IPv6].src, ip6_src)
80 self.assertEqual(rx[IPv6].dst, ip6_dst)
82 def send_and_assert_encapped_one(self, packet, ip6_src, ip6_dst, dmac=None):
83 return self.send_and_assert_encapped([packet], ip6_src, ip6_dst, dmac)
85 def test_api_map_domain_dump(self):
87 map_src = "3000::1/128"
88 client_pfx = "192.168.0.0/16"
90 index = self.vapi.map_add_domain(
91 ip4_prefix=client_pfx, ip6_prefix=map_dst, ip6_src=map_src, tag=tag
93 rv = self.vapi.map_domain_dump()
95 # restore the state early so as to not impact subsequent tests.
96 # If an assert fails, we will not get the chance to do it at the end.
97 self.vapi.map_del_domain(index=index)
99 self.assertGreater(len(rv), 0, "Expected output from 'map_domain_dump'")
101 # typedefs are returned as ipaddress objects.
102 # wrap results in str() ugh! to avoid the need to call unicode.
103 self.assertEqual(str(rv[0].ip4_prefix), client_pfx)
104 self.assertEqual(str(rv[0].ip6_prefix), map_dst)
105 self.assertEqual(str(rv[0].ip6_src), map_src)
107 self.assertEqual(rv[0].tag, tag, "output produced incorrect tag value.")
109 def create_domains(self, ip4_pfx_str, ip6_pfx_str, ip6_src_str):
110 ip4_pfx = ipaddress.ip_network(ip4_pfx_str)
111 ip6_dst = ipaddress.ip_network(ip6_pfx_str)
112 mod = ip4_pfx.num_addresses / 1024
114 for i in range(ip4_pfx.num_addresses):
115 rv = self.vapi.map_add_domain(
116 ip6_prefix=ip6_pfx_str,
117 ip4_prefix=str(ip4_pfx[i]) + "/32",
120 indicies.append(rv.index)
123 def test_api_map_domains_get(self):
124 # Create a bunch of domains
125 no_domains = 4096 # This must be large enough to ensure VPP suspends
126 domains = self.create_domains("130.67.0.0/20", "2001::/32", "2001::1/128")
127 self.assertEqual(len(domains), no_domains)
133 rv, details = self.vapi.map_domains_get(cursor=no_domains + 10)
134 self.assertEqual(rv.retval, -7)
136 # Delete a domain in the middle of walk
137 rv, details = self.vapi.map_domains_get(cursor=0)
138 self.assertEqual(rv.retval, -165)
139 self.vapi.map_del_domain(index=rv.cursor)
140 domains.remove(rv.cursor)
142 # Continue at point of deleted cursor
143 rv, details = self.vapi.map_domains_get(cursor=rv.cursor)
144 self.assertIn(rv.retval, [0, -165])
146 d = list(self.vapi.vpp.details_iter(self.vapi.map_domains_get))
147 self.assertEqual(len(d), no_domains - 1)
151 self.vapi.map_del_domain(index=i)
153 def test_map_e_udp(self):
157 # Add a route to the MAP-BR
159 map_br_pfx = "2001::"
161 map_route = VppIpRoute(
165 [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
167 map_route.add_vpp_config()
170 # Add a domain that maps from pg0 to pg1
172 map_dst = "2001::/32"
173 map_src = "3000::1/128"
174 client_pfx = "192.168.0.0/16"
175 map_translated_addr = "2001:0:101:7000:0:c0a8:101:7"
177 self.vapi.map_add_domain(
178 ip4_prefix=client_pfx,
187 self.vapi.map_param_set_security_check(enable=1, fragments=1)
189 # Enable MAP on interface.
190 self.vapi.map_if_enable_disable(
191 is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=0
194 # Ensure MAP doesn't steal all packets!
196 Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
197 / IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4)
198 / UDP(sport=20000, dport=10000)
201 rx = self.send_and_expect(self.pg0, v4 * 4, self.pg0)
205 self.validate(p[1], v4_reply)
208 # Fire in a v4 packet that will be encapped to the BR
211 Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
212 / IP(src=self.pg0.remote_ip4, dst="192.168.1.1")
213 / UDP(sport=20000, dport=10000)
217 self.send_and_assert_encapped(v4 * 4, "3000::1", map_translated_addr)
220 # Verify reordered fragments are able to pass as well
223 Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
224 / IP(id=1, src=self.pg0.remote_ip4, dst="192.168.1.1")
225 / UDP(sport=20000, dport=10000)
226 / Raw(b"\xa5" * 1000)
229 frags = fragment_rfc791(v4, 400)
232 self.send_and_assert_encapped(frags, "3000::1", map_translated_addr)
234 # Enable MAP on interface.
235 self.vapi.map_if_enable_disable(
236 is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=0
239 # Ensure MAP doesn't steal all packets
241 Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
242 / IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6)
243 / UDP(sport=20000, dport=10000)
246 rx = self.send_and_expect(self.pg1, v6 * 1, self.pg1)
250 self.validate(p[1], v6_reply)
253 # Fire in a V6 encapped packet.
254 # expect a decapped packet on the inside ip4 link
257 Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
258 / IPv6(dst="3000::1", src=map_translated_addr)
259 / IP(dst=self.pg0.remote_ip4, src="192.168.1.1")
260 / UDP(sport=10000, dport=20000)
264 self.pg1.add_stream(p)
266 self.pg_enable_capture(self.pg_interfaces)
269 rx = self.pg0.get_capture(1)
272 self.assertFalse(rx.haslayer(IPv6))
273 self.assertEqual(rx[IP].src, p[IP].src)
274 self.assertEqual(rx[IP].dst, p[IP].dst)
277 # Verify encapped reordered fragments pass as well
280 IP(id=1, dst=self.pg0.remote_ip4, src="192.168.1.1")
281 / UDP(sport=10000, dport=20000)
282 / Raw(b"\xa5" * 1500)
284 frags = fragment_rfc791(p, 400)
288 Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
289 / IPv6(dst="3000::1", src=map_translated_addr)
294 self.pg1.add_stream(stream)
296 self.pg_enable_capture(self.pg_interfaces)
299 rx = self.pg0.get_capture(len(frags))
302 self.assertFalse(r.haslayer(IPv6))
303 self.assertEqual(r[IP].src, p[IP].src)
304 self.assertEqual(r[IP].dst, p[IP].dst)
306 # Verify that fragments pass even if ipv6 layer is fragmented
307 stream = (IPv6(dst="3000::1", src=map_translated_addr) / x for x in frags)
310 Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / x
311 for i in range(len(frags))
312 for x in fragment_rfc8200(
313 IPv6(dst="3000::1", src=map_translated_addr) / frags[i], i, 200
317 self.pg1.add_stream(v6_stream)
319 self.pg_enable_capture(self.pg_interfaces)
322 rx = self.pg0.get_capture(len(frags))
325 self.assertFalse(r.haslayer(IPv6))
326 self.assertEqual(r[IP].src, p[IP].src)
327 self.assertEqual(r[IP].dst, p[IP].dst)
330 # Pre-resolve. No API for this!!
332 self.vapi.ppcli("map params pre-resolve ip6-nh 4001::1")
334 self.send_and_assert_no_replies(self.pg0, v4, "resolved via default route")
337 # Add a route to 4001::1. Expect the encapped traffic to be
338 # sent via that routes next-hop
340 pre_res_route = VppIpRoute(
344 [VppRoutePath(self.pg1.remote_hosts[2].ip6, self.pg1.sw_if_index)],
346 pre_res_route.add_vpp_config()
348 self.send_and_assert_encapped_one(
349 v4, "3000::1", map_translated_addr, dmac=self.pg1.remote_hosts[2].mac
353 # change the route to the pre-solved next-hop
355 pre_res_route.modify(
356 [VppRoutePath(self.pg1.remote_hosts[3].ip6, self.pg1.sw_if_index)]
358 pre_res_route.add_vpp_config()
360 self.send_and_assert_encapped_one(
361 v4, "3000::1", map_translated_addr, dmac=self.pg1.remote_hosts[3].mac
365 # cleanup. The test infra's object registry will ensure
366 # the route is really gone and thus that the unresolve worked.
368 pre_res_route.remove_vpp_config()
369 self.vapi.ppcli("map params pre-resolve del ip6-nh 4001::1")
371 def test_map_e_inner_frag(self):
372 """MAP-E Inner fragmentation"""
375 # Add a route to the MAP-BR
377 map_br_pfx = "2001::"
379 map_route = VppIpRoute(
383 [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
385 map_route.add_vpp_config()
388 # Add a domain that maps from pg0 to pg1
390 map_dst = "2001::/32"
391 map_src = "3000::1/128"
392 client_pfx = "192.168.0.0/16"
393 map_translated_addr = "2001:0:101:7000:0:c0a8:101:7"
395 self.vapi.map_add_domain(
396 ip4_prefix=client_pfx,
406 # Enable MAP on interface.
407 self.vapi.map_if_enable_disable(
408 is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=0
411 # Enable inner fragmentation
412 self.vapi.map_param_set_fragmentation(inner=1)
415 Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
416 / IP(src=self.pg0.remote_ip4, dst="192.168.1.1")
417 / UDP(sport=20000, dport=10000)
418 / Raw(b"\xa5" * 1300)
421 self.pg_send(self.pg0, v4 * 1)
422 rx = self.pg1.get_capture(2)
424 # 1000-sizeof(ip6_header_t) = 960.
425 frags = fragment_rfc791(v4[1], 960)
433 v6_reply1 = IPv6(src="3000::1", dst=map_translated_addr, hlim=63) / frags[0]
434 v6_reply2 = IPv6(src="3000::1", dst=map_translated_addr, hlim=63) / frags[1]
439 rx[0][1][IP].chksum = 0
440 rx[1][1][IP].chksum = 0
442 self.validate(rx[0][1], v6_reply1)
443 self.validate(rx[1][1], v6_reply2)
445 def test_map_e_tcp_mss(self):
449 # Add a route to the MAP-BR
451 map_br_pfx = "2001::"
453 map_route = VppIpRoute(
457 [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
459 map_route.add_vpp_config()
462 # Add a domain that maps from pg0 to pg1
464 map_dst = "2001::/32"
465 map_src = "3000::1/128"
466 client_pfx = "192.168.0.0/16"
467 map_translated_addr = "2001:0:101:5000:0:c0a8:101:5"
468 tag = "MAP-E TCP tag."
469 self.vapi.map_add_domain(
470 ip4_prefix=client_pfx,
479 # Enable MAP on pg0 interface.
480 self.vapi.map_if_enable_disable(
481 is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=0
484 # Enable MAP on pg1 interface.
485 self.vapi.map_if_enable_disable(
486 is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=0
491 self.vapi.map_param_set_tcp(mss_clamp)
494 # Send a v4 packet that will be encapped.
496 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
497 p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.1.1")
498 p_tcp = TCP(sport=20000, dport=30000, flags="S", options=[("MSS", 1455)])
499 p4 = p_ether / p_ip4 / p_tcp
501 self.pg1.add_stream(p4)
502 self.pg_enable_capture(self.pg_interfaces)
505 rx = self.pg1.get_capture(1)
508 self.assertTrue(rx.haslayer(IPv6))
509 self.assertEqual(rx[IP].src, p4[IP].src)
510 self.assertEqual(rx[IP].dst, p4[IP].dst)
511 self.assertEqual(rx[IPv6].src, "3000::1")
512 self.assertEqual(rx[TCP].options, TCP(options=[("MSS", mss_clamp)]).options)
514 def validate(self, rx, expected):
515 self.assertEqual(rx, expected.__class__(scapy.compat.raw(expected)))
517 def validate_frag6(self, p6_frag, p_ip6_expected):
518 self.assertFalse(p6_frag.haslayer(IP))
519 self.assertTrue(p6_frag.haslayer(IPv6))
520 self.assertTrue(p6_frag.haslayer(IPv6ExtHdrFragment))
521 self.assertEqual(p6_frag[IPv6].src, p_ip6_expected.src)
522 self.assertEqual(p6_frag[IPv6].dst, p_ip6_expected.dst)
524 def validate_frag_payload_len6(self, rx, proto, payload_len_expected):
527 payload_total += p[IPv6].plen
529 # First fragment has proto
530 payload_total -= len(proto())
532 # Every fragment has IPv6 fragment header
533 payload_total -= len(IPv6ExtHdrFragment()) * len(rx)
535 self.assertEqual(payload_total, payload_len_expected)
537 def validate_frag4(self, p4_frag, p_ip4_expected):
538 self.assertFalse(p4_frag.haslayer(IPv6))
539 self.assertTrue(p4_frag.haslayer(IP))
540 self.assertTrue(p4_frag[IP].frag != 0 or p4_frag[IP].flags.MF)
541 self.assertEqual(p4_frag[IP].src, p_ip4_expected.src)
542 self.assertEqual(p4_frag[IP].dst, p_ip4_expected.dst)
544 def validate_frag_payload_len4(self, rx, proto, payload_len_expected):
547 payload_total += len(p[IP].payload)
549 # First fragment has proto
550 payload_total -= len(proto())
552 self.assertEqual(payload_total, payload_len_expected)
554 def payload(self, len):
557 def test_map_t(self):
561 # Add a domain that maps from pg0 to pg1
563 map_dst = "2001:db8::/32"
564 map_src = "1234:5678:90ab:cdef::/64"
565 ip4_pfx = "192.168.0.0/24"
568 self.vapi.map_add_domain(
579 # Enable MAP-T on interfaces.
580 self.vapi.map_if_enable_disable(
581 is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=1
583 self.vapi.map_if_enable_disable(
584 is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=1
587 # Ensure MAP doesn't steal all packets!
589 Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
590 / IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4)
591 / UDP(sport=20000, dport=10000)
594 rx = self.send_and_expect(self.pg0, v4 * 1, self.pg0)
598 self.validate(p[1], v4_reply)
599 # Ensure MAP doesn't steal all packets
601 Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
602 / IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6)
603 / UDP(sport=20000, dport=10000)
606 rx = self.send_and_expect(self.pg1, v6 * 1, self.pg1)
610 self.validate(p[1], v6_reply)
612 map_route = VppIpRoute(
619 self.pg1.sw_if_index,
620 proto=DpoProto.DPO_PROTO_IP6,
624 map_route.add_vpp_config()
627 # Send a v4 packet that will be translated
629 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
630 p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
631 payload = TCP(sport=0xABCD, dport=0xABCD)
633 p4 = p_ether / p_ip4 / payload
635 IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1f0::c0a8:1:f")
638 p6_translated.hlim -= 1
639 rx = self.send_and_expect(self.pg0, p4 * 1, self.pg1)
641 self.validate(p[1], p6_translated)
643 # Send back an IPv6 packet that will be "untranslated"
644 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
646 src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
648 p6 = p_ether6 / p_ip6 / payload
649 p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
651 p4_translated.ttl -= 1
652 rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
654 self.validate(p[1], p4_translated)
657 ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=0)
658 p4 = p_ether / ip4_ttl_expired / payload
661 IP(id=0, ttl=254, src=self.pg0.local_ip4, dst=self.pg0.remote_ip4)
662 / ICMP(type="time-exceeded", code="ttl-zero-during-transit")
663 / IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=0)
666 rx = self.send_and_expect(self.pg0, p4 * 1, self.pg0)
668 self.validate(p[1], icmp4_reply)
671 ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=1)
672 p4 = p_ether / ip4_ttl_expired / payload
675 IP(id=0, ttl=254, src=self.pg0.local_ip4, dst=self.pg0.remote_ip4)
676 / ICMP(type="time-exceeded", code="ttl-zero-during-transit")
677 / IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=1)
680 rx = self.send_and_expect(self.pg0, p4 * 1, self.pg0)
682 self.validate(p[1], icmp4_reply)
684 # IPv6 Hop limit at BR
685 ip6_hlim_expired = IPv6(
687 src="2001:db8:1ab::c0a8:1:ab",
688 dst="1234:5678:90ab:cdef:ac:1001:200:0",
690 p6 = p_ether6 / ip6_hlim_expired / payload
693 IPv6(hlim=255, src=self.pg1.local_ip6, dst="2001:db8:1ab::c0a8:1:ab")
694 / ICMPv6TimeExceeded(code=0)
696 src="2001:db8:1ab::c0a8:1:ab",
697 dst="1234:5678:90ab:cdef:ac:1001:200:0",
702 rx = self.send_and_expect(self.pg1, p6 * 1, self.pg1)
704 self.validate(p[1], icmp6_reply)
706 # IPv6 Hop limit beyond BR
707 ip6_hlim_expired = IPv6(
709 src="2001:db8:1ab::c0a8:1:ab",
710 dst="1234:5678:90ab:cdef:ac:1001:200:0",
712 p6 = p_ether6 / ip6_hlim_expired / payload
715 IPv6(hlim=255, src=self.pg1.local_ip6, dst="2001:db8:1ab::c0a8:1:ab")
716 / ICMPv6TimeExceeded(code=0)
718 src="2001:db8:1ab::c0a8:1:ab",
719 dst="1234:5678:90ab:cdef:ac:1001:200:0",
724 rx = self.send_and_expect(self.pg1, p6 * 1, self.pg1)
726 self.validate(p[1], icmp6_reply)
728 # IPv4 Well-known port
729 p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
730 payload = UDP(sport=200, dport=200)
731 p4 = p_ether / p_ip4 / payload
732 self.send_and_assert_no_replies(self.pg0, p4 * 1)
734 # IPv6 Well-known port
735 payload = UDP(sport=200, dport=200)
736 p6 = p_ether6 / p_ip6 / payload
737 self.send_and_assert_no_replies(self.pg1, p6 * 1)
739 # UDP packet fragmentation
741 payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
742 p4 = p_ether / p_ip4 / payload
743 self.pg_enable_capture()
744 self.pg0.add_stream(p4)
746 rx = self.pg1.get_capture(2)
748 p_ip6_translated = IPv6(
749 src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1e0::c0a8:1:e"
752 self.validate_frag6(p, p_ip6_translated)
754 self.validate_frag_payload_len6(rx, UDP, payload_len)
756 # UDP packet fragmentation send fragments
758 payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
759 p4 = p_ether / p_ip4 / payload
760 frags = fragment_rfc791(p4, fragsize=1000)
761 self.pg_enable_capture()
762 self.pg0.add_stream(frags)
764 rx = self.pg1.get_capture(2)
767 self.validate_frag6(p, p_ip6_translated)
769 self.validate_frag_payload_len6(rx, UDP, payload_len)
771 # Send back an fragmented IPv6 UDP packet that will be "untranslated"
772 payload = UDP(sport=4000, dport=40000) / self.payload(payload_len)
773 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
775 src="2001:db8:1e0::c0a8:1:e", dst="1234:5678:90ab:cdef:ac:1001:200:0"
777 p6 = p_ether6 / p_ip6 / payload
778 frags6 = fragment_rfc8200(p6, identification=0xDCBA, fragsize=1000)
780 p_ip4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4)
781 p4_translated = p_ip4_translated / payload
783 p4_translated.ttl -= 1
785 self.pg_enable_capture()
786 self.pg1.add_stream(frags6)
788 rx = self.pg0.get_capture(2)
791 self.validate_frag4(p, p4_translated)
793 self.validate_frag_payload_len4(rx, UDP, payload_len)
795 # ICMP packet fragmentation
796 payload = ICMP(id=6529) / self.payload(payload_len)
797 p4 = p_ether / p_ip4 / payload
798 self.pg_enable_capture()
799 self.pg0.add_stream(p4)
801 rx = self.pg1.get_capture(2)
803 p_ip6_translated = IPv6(
804 src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:160::c0a8:1:6"
807 self.validate_frag6(p, p_ip6_translated)
809 self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
811 # ICMP packet fragmentation send fragments
812 payload = ICMP(id=6529) / self.payload(payload_len)
813 p4 = p_ether / p_ip4 / payload
814 frags = fragment_rfc791(p4, fragsize=1000)
815 self.pg_enable_capture()
816 self.pg0.add_stream(frags)
818 rx = self.pg1.get_capture(2)
821 self.validate_frag6(p, p_ip6_translated)
823 self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
826 self.vapi.map_param_set_tcp(1300)
829 # Send a v4 TCP SYN packet that will be translated and MSS clamped
831 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
832 p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
833 payload = TCP(sport=0xABCD, dport=0xABCD, flags="S", options=[("MSS", 1460)])
835 p4 = p_ether / p_ip4 / payload
837 IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1f0::c0a8:1:f")
840 p6_translated.hlim -= 1
841 p6_translated[TCP].options = [("MSS", 1300)]
842 rx = self.send_and_expect(self.pg0, p4 * 1, self.pg1)
844 self.validate(p[1], p6_translated)
846 # Send back an IPv6 packet that will be "untranslated"
847 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
849 src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
851 p6 = p_ether6 / p_ip6 / payload
852 p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
854 p4_translated.ttl -= 1
855 p4_translated[TCP].options = [("MSS", 1300)]
856 rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
858 self.validate(p[1], p4_translated)
860 # TCP MSS clamping cleanup
861 self.vapi.map_param_set_tcp(0)
863 # Enable icmp6 param to get back ICMPv6 unreachable messages in case
864 # of security check fails
865 self.vapi.map_param_set_icmp6(enable_unreachable=1)
867 # Send back an IPv6 packet that will be droppped due to security
869 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
870 p_ip6_sec_check_fail = IPv6(
871 src="2001:db8:1fe::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
873 payload = TCP(sport=0xABCD, dport=0xABCD)
874 p6 = p_ether6 / p_ip6_sec_check_fail / payload
876 self.pg_send(self.pg1, p6 * 1)
877 self.pg0.get_capture(0, timeout=1)
878 rx = self.pg1.get_capture(1)
881 IPv6(hlim=255, src=self.pg1.local_ip6, dst="2001:db8:1fe::c0a8:1:f")
882 / ICMPv6DestUnreach(code=5)
883 / p_ip6_sec_check_fail
888 self.validate(p[1], icmp6_reply)
890 # ICMPv6 unreachable messages cleanup
891 self.vapi.map_param_set_icmp6(enable_unreachable=0)
893 def test_map_t_ip6_psid(self):
894 """MAP-T v6->v4 PSID validation"""
897 # Add a domain that maps from pg0 to pg1
899 map_dst = "2001:db8::/32"
900 map_src = "1234:5678:90ab:cdef::/64"
901 ip4_pfx = "192.168.0.0/24"
902 tag = "MAP-T Test Domain"
904 self.vapi.map_add_domain(
915 # Enable MAP-T on interfaces.
916 self.vapi.map_if_enable_disable(
917 is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=1
919 self.vapi.map_if_enable_disable(
920 is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=1
923 map_route = VppIpRoute(
930 self.pg1.sw_if_index,
931 proto=DpoProto.DPO_PROTO_IP6,
935 map_route.add_vpp_config()
937 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
939 src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
942 # Send good IPv6 source port, ensure translated IPv4 received
943 payload = TCP(sport=0xABCD, dport=80)
944 p6 = p_ether6 / p_ip6 / payload
945 p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
947 p4_translated.ttl -= 1
948 rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
950 self.validate(p[1], p4_translated)
952 # Send bad IPv6 source port, ensure translated IPv4 not received
953 payload = TCP(sport=0xDCBA, dport=80)
954 p6 = p_ether6 / p_ip6 / payload
955 self.send_and_assert_no_replies(self.pg1, p6 * 1)
957 def test_map_t_pre_resolve(self):
958 """MAP-T pre-resolve"""
960 # Add a domain that maps from pg0 to pg1
961 map_dst = "2001:db8::/32"
962 map_src = "1234:5678:90ab:cdef::/64"
963 ip4_pfx = "192.168.0.0/24"
964 tag = "MAP-T Test Domain."
966 self.vapi.map_add_domain(
977 # Enable MAP-T on interfaces.
978 self.vapi.map_if_enable_disable(
979 is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=1
981 self.vapi.map_if_enable_disable(
982 is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=1
985 # Enable pre-resolve option
986 self.vapi.map_param_add_del_pre_resolve(
987 ip4_nh_address="10.1.2.3", ip6_nh_address="4001::1", is_add=1
990 # Add a route to 4001::1 and expect the translated traffic to be
991 # sent via that route next-hop.
992 pre_res_route6 = VppIpRoute(
996 [VppRoutePath(self.pg1.remote_hosts[2].ip6, self.pg1.sw_if_index)],
998 pre_res_route6.add_vpp_config()
1000 # Add a route to 10.1.2.3 and expect the "untranslated" traffic to be
1001 # sent via that route next-hop.
1002 pre_res_route4 = VppIpRoute(
1006 [VppRoutePath(self.pg0.remote_hosts[1].ip4, self.pg0.sw_if_index)],
1008 pre_res_route4.add_vpp_config()
1010 # Send an IPv4 packet that will be translated
1011 p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
1012 p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
1013 payload = TCP(sport=0xABCD, dport=0xABCD)
1014 p4 = p_ether / p_ip4 / payload
1017 IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1f0::c0a8:1:f")
1020 p6_translated.hlim -= 1
1022 rx = self.send_and_expect(self.pg0, p4 * 1, self.pg1)
1024 self.assertEqual(p[Ether].dst, self.pg1.remote_hosts[2].mac)
1025 self.validate(p[1], p6_translated)
1027 # Send back an IPv6 packet that will be "untranslated"
1028 p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
1030 src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
1032 p6 = p_ether6 / p_ip6 / payload
1034 p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
1035 p4_translated.id = 0
1036 p4_translated.ttl -= 1
1038 rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
1040 self.assertEqual(p[Ether].dst, self.pg0.remote_hosts[1].mac)
1041 self.validate(p[1], p4_translated)
1043 # Cleanup pre-resolve option
1044 self.vapi.map_param_add_del_pre_resolve(
1045 ip4_nh_address="10.1.2.3", ip6_nh_address="4001::1", is_add=0
1049 if __name__ == "__main__":
1050 unittest.main(testRunner=VppTestRunner)