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Diffstat (limited to 'test/test_map.py')
| -rw-r--r-- | test/test_map.py | 964 |
1 files changed, 964 insertions, 0 deletions
diff --git a/test/test_map.py b/test/test_map.py new file mode 100644 index 00000000000..90fee301267 --- /dev/null +++ b/test/test_map.py @@ -0,0 +1,964 @@ +#!/usr/bin/env python3 + +import ipaddress +import unittest + +from framework import VppTestCase, VppTestRunner +from vpp_ip import DpoProto +from vpp_ip_route import VppIpRoute, VppRoutePath +from util import fragment_rfc791, fragment_rfc8200 + +import scapy.compat +from scapy.layers.l2 import Ether +from scapy.packet import Raw +from scapy.layers.inet import IP, UDP, ICMP, TCP +from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, IPv6ExtHdrFragment, \ + ICMPv6EchoRequest, ICMPv6DestUnreach + + +class TestMAP(VppTestCase): + """ MAP Test Case """ + + @classmethod + def setUpClass(cls): + super(TestMAP, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestMAP, cls).tearDownClass() + + def setUp(self): + super(TestMAP, self).setUp() + + # create 2 pg interfaces + self.create_pg_interfaces(range(4)) + + # pg0 is 'inside' IPv4 + self.pg0.admin_up() + self.pg0.config_ip4() + self.pg0.resolve_arp() + self.pg0.generate_remote_hosts(2) + self.pg0.configure_ipv4_neighbors() + + # pg1 is 'outside' IPv6 + self.pg1.admin_up() + self.pg1.config_ip6() + self.pg1.generate_remote_hosts(4) + self.pg1.configure_ipv6_neighbors() + + def tearDown(self): + super(TestMAP, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.unconfig_ip6() + i.admin_down() + + def send_and_assert_encapped(self, packets, ip6_src, ip6_dst, dmac=None): + if not dmac: + dmac = self.pg1.remote_mac + + self.pg0.add_stream(packets) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + capture = self.pg1.get_capture(len(packets)) + for rx, tx in zip(capture, packets): + self.assertEqual(rx[Ether].dst, dmac) + self.assertEqual(rx[IP].src, tx[IP].src) + self.assertEqual(rx[IPv6].src, ip6_src) + self.assertEqual(rx[IPv6].dst, ip6_dst) + + def send_and_assert_encapped_one(self, packet, ip6_src, ip6_dst, + dmac=None): + return self.send_and_assert_encapped([packet], ip6_src, ip6_dst, dmac) + + def test_api_map_domain_dump(self): + map_dst = '2001::/64' + map_src = '3000::1/128' + client_pfx = '192.168.0.0/16' + tag = 'MAP-E tag.' + index = self.vapi.map_add_domain(ip4_prefix=client_pfx, + ip6_prefix=map_dst, + ip6_src=map_src, + tag=tag).index + rv = self.vapi.map_domain_dump() + + # restore the state early so as to not impact subsequent tests. + # If an assert fails, we will not get the chance to do it at the end. + self.vapi.map_del_domain(index=index) + + self.assertGreater(len(rv), 0, + "Expected output from 'map_domain_dump'") + + # typedefs are returned as ipaddress objects. + # wrap results in str() ugh! to avoid the need to call unicode. + self.assertEqual(str(rv[0].ip4_prefix), client_pfx) + self.assertEqual(str(rv[0].ip6_prefix), map_dst) + self.assertEqual(str(rv[0].ip6_src), map_src) + + self.assertEqual(rv[0].tag, tag, + "output produced incorrect tag value.") + + def create_domains(self, ip4_pfx_str, ip6_pfx_str, ip6_src_str): + ip4_pfx = ipaddress.ip_network(ip4_pfx_str) + ip6_dst = ipaddress.ip_network(ip6_pfx_str) + mod = ip4_pfx.num_addresses / 1024 + indicies = [] + for i in range(ip4_pfx.num_addresses): + rv = self.vapi.map_add_domain(ip6_prefix=ip6_pfx_str, + ip4_prefix=str(ip4_pfx[i]) + "/32", + ip6_src=ip6_src_str) + indicies.append(rv.index) + return indicies + + def test_api_map_domains_get(self): + # Create a bunch of domains + no_domains = 4096 # This must be large enough to ensure VPP suspends + domains = self.create_domains('130.67.0.0/20', '2001::/32', + '2001::1/128') + self.assertEqual(len(domains), no_domains) + + d = [] + cursor = 0 + + # Invalid cursor + rv, details = self.vapi.map_domains_get(cursor=no_domains+10) + self.assertEqual(rv.retval, -7) + + # Delete a domain in the middle of walk + rv, details = self.vapi.map_domains_get(cursor=0) + self.assertEqual(rv.retval, -165) + self.vapi.map_del_domain(index=rv.cursor) + domains.remove(rv.cursor) + + # Continue at point of deleted cursor + rv, details = self.vapi.map_domains_get(cursor=rv.cursor) + self.assertIn(rv.retval, [0, -165]) + + d = list(self.vapi.vpp.details_iter(self.vapi.map_domains_get)) + self.assertEqual(len(d), no_domains - 1) + + # Clean up + for i in domains: + self.vapi.map_del_domain(index=i) + + def test_map_e_udp(self): + """ MAP-E UDP""" + + # + # Add a route to the MAP-BR + # + map_br_pfx = "2001::" + map_br_pfx_len = 32 + map_route = VppIpRoute(self, + map_br_pfx, + map_br_pfx_len, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index)]) + map_route.add_vpp_config() + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001::/32' + map_src = '3000::1/128' + client_pfx = '192.168.0.0/16' + map_translated_addr = '2001:0:101:7000:0:c0a8:101:7' + tag = 'MAP-E tag.' + self.vapi.map_add_domain(ip4_prefix=client_pfx, + ip6_prefix=map_dst, + ip6_src=map_src, + ea_bits_len=20, + psid_offset=4, + psid_length=4, + tag=tag) + + self.vapi.map_param_set_security_check(enable=1, fragments=1) + + # Enable MAP on interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=0) + + # Ensure MAP doesn't steal all packets! + v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 100)) + rx = self.send_and_expect(self.pg0, v4 * 4, self.pg0) + v4_reply = v4[1] + v4_reply.ttl -= 1 + for p in rx: + self.validate(p[1], v4_reply) + + # + # Fire in a v4 packet that will be encapped to the BR + # + v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst='192.168.1.1') / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 100)) + + self.send_and_assert_encapped(v4 * 4, "3000::1", map_translated_addr) + + # + # Verify reordered fragments are able to pass as well + # + v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(id=1, src=self.pg0.remote_ip4, dst='192.168.1.1') / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 1000)) + + frags = fragment_rfc791(v4, 400) + frags.reverse() + + self.send_and_assert_encapped(frags, "3000::1", map_translated_addr) + + # Enable MAP on interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg1.sw_if_index, + is_translation=0) + + # Ensure MAP doesn't steal all packets + v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / + IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 100)) + rx = self.send_and_expect(self.pg1, v6*1, self.pg1) + v6_reply = v6[1] + v6_reply.hlim -= 1 + for p in rx: + self.validate(p[1], v6_reply) + + # + # Fire in a V6 encapped packet. + # expect a decapped packet on the inside ip4 link + # + p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / + IPv6(dst='3000::1', src=map_translated_addr) / + IP(dst=self.pg0.remote_ip4, src='192.168.1.1') / + UDP(sport=10000, dport=20000) / + Raw(b'\xa5' * 100)) + + self.pg1.add_stream(p) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + rx = rx[0] + + self.assertFalse(rx.haslayer(IPv6)) + self.assertEqual(rx[IP].src, p[IP].src) + self.assertEqual(rx[IP].dst, p[IP].dst) + + # + # Verify encapped reordered fragments pass as well + # + p = (IP(id=1, dst=self.pg0.remote_ip4, src='192.168.1.1') / + UDP(sport=10000, dport=20000) / + Raw(b'\xa5' * 1500)) + frags = fragment_rfc791(p, 400) + frags.reverse() + + stream = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / + IPv6(dst='3000::1', src=map_translated_addr) / + x for x in frags) + + self.pg1.add_stream(stream) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(len(frags)) + + for r in rx: + self.assertFalse(r.haslayer(IPv6)) + self.assertEqual(r[IP].src, p[IP].src) + self.assertEqual(r[IP].dst, p[IP].dst) + + # Verify that fragments pass even if ipv6 layer is fragmented + stream = (IPv6(dst='3000::1', src=map_translated_addr) / x + for x in frags) + + v6_stream = [ + Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / x + for i in range(len(frags)) + for x in fragment_rfc8200( + IPv6(dst='3000::1', src=map_translated_addr) / frags[i], + i, 200)] + + self.pg1.add_stream(v6_stream) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(len(frags)) + + for r in rx: + self.assertFalse(r.haslayer(IPv6)) + self.assertEqual(r[IP].src, p[IP].src) + self.assertEqual(r[IP].dst, p[IP].dst) + + # + # Pre-resolve. No API for this!! + # + self.vapi.ppcli("map params pre-resolve ip6-nh 4001::1") + + self.send_and_assert_no_replies(self.pg0, v4, + "resolved via default route") + + # + # Add a route to 4001::1. Expect the encapped traffic to be + # sent via that routes next-hop + # + pre_res_route = VppIpRoute(self, "4001::1", 128, + [VppRoutePath(self.pg1.remote_hosts[2].ip6, + self.pg1.sw_if_index)]) + pre_res_route.add_vpp_config() + + self.send_and_assert_encapped_one(v4, "3000::1", + map_translated_addr, + dmac=self.pg1.remote_hosts[2].mac) + + # + # change the route to the pre-solved next-hop + # + pre_res_route.modify([VppRoutePath(self.pg1.remote_hosts[3].ip6, + self.pg1.sw_if_index)]) + pre_res_route.add_vpp_config() + + self.send_and_assert_encapped_one(v4, "3000::1", + map_translated_addr, + dmac=self.pg1.remote_hosts[3].mac) + + # + # cleanup. The test infra's object registry will ensure + # the route is really gone and thus that the unresolve worked. + # + pre_res_route.remove_vpp_config() + self.vapi.ppcli("map params pre-resolve del ip6-nh 4001::1") + + def test_map_e_inner_frag(self): + """ MAP-E Inner fragmentation """ + + # + # Add a route to the MAP-BR + # + map_br_pfx = "2001::" + map_br_pfx_len = 32 + map_route = VppIpRoute(self, + map_br_pfx, + map_br_pfx_len, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index)]) + map_route.add_vpp_config() + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001::/32' + map_src = '3000::1/128' + client_pfx = '192.168.0.0/16' + map_translated_addr = '2001:0:101:7000:0:c0a8:101:7' + tag = 'MAP-E tag.' + self.vapi.map_add_domain(ip4_prefix=client_pfx, + ip6_prefix=map_dst, + ip6_src=map_src, + ea_bits_len=20, + psid_offset=4, + psid_length=4, + mtu=1000, + tag=tag) + + # Enable MAP on interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=0) + + # Enable inner fragmentation + self.vapi.map_param_set_fragmentation(inner=1) + + v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst='192.168.1.1') / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 1300)) + + self.pg_send(self.pg0, v4*1) + rx = self.pg1.get_capture(2) + + frags = fragment_rfc791(v4[1], 1000) + frags[0].id = 0 + frags[1].id = 0 + frags[0].ttl -= 1 + frags[1].ttl -= 1 + frags[0].chksum = 0 + frags[1].chksum = 0 + + v6_reply1 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) / + frags[0]) + v6_reply2 = (IPv6(src='3000::1', dst=map_translated_addr, hlim=63) / + frags[1]) + rx[0][1].fl = 0 + rx[1][1].fl = 0 + rx[0][1][IP].id = 0 + rx[1][1][IP].id = 0 + rx[0][1][IP].chksum = 0 + rx[1][1][IP].chksum = 0 + + self.validate(rx[0][1], v6_reply1) + self.validate(rx[1][1], v6_reply2) + + def test_map_e_tcp_mss(self): + """ MAP-E TCP MSS""" + + # + # Add a route to the MAP-BR + # + map_br_pfx = "2001::" + map_br_pfx_len = 32 + map_route = VppIpRoute(self, + map_br_pfx, + map_br_pfx_len, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index)]) + map_route.add_vpp_config() + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001::/32' + map_src = '3000::1/128' + client_pfx = '192.168.0.0/16' + map_translated_addr = '2001:0:101:5000:0:c0a8:101:5' + tag = 'MAP-E TCP tag.' + self.vapi.map_add_domain(ip4_prefix=client_pfx, + ip6_prefix=map_dst, + ip6_src=map_src, + ea_bits_len=20, + psid_offset=4, + psid_length=4, + tag=tag) + + # Enable MAP on pg0 interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=0) + + # Enable MAP on pg1 interface. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg1.sw_if_index, + is_translation=0) + + # TCP MSS clamping + mss_clamp = 1300 + self.vapi.map_param_set_tcp(mss_clamp) + + # + # Send a v4 packet that will be encapped. + # + p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.1.1') + p_tcp = TCP(sport=20000, dport=30000, flags="S", + options=[("MSS", 1455)]) + p4 = p_ether / p_ip4 / p_tcp + + self.pg1.add_stream(p4) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg1.get_capture(1) + rx = rx[0] + + self.assertTrue(rx.haslayer(IPv6)) + self.assertEqual(rx[IP].src, p4[IP].src) + self.assertEqual(rx[IP].dst, p4[IP].dst) + self.assertEqual(rx[IPv6].src, "3000::1") + self.assertEqual(rx[TCP].options, + TCP(options=[('MSS', mss_clamp)]).options) + + def validate(self, rx, expected): + self.assertEqual(rx, expected.__class__(scapy.compat.raw(expected))) + + def validate_frag6(self, p6_frag, p_ip6_expected): + self.assertFalse(p6_frag.haslayer(IP)) + self.assertTrue(p6_frag.haslayer(IPv6)) + self.assertTrue(p6_frag.haslayer(IPv6ExtHdrFragment)) + self.assertEqual(p6_frag[IPv6].src, p_ip6_expected.src) + self.assertEqual(p6_frag[IPv6].dst, p_ip6_expected.dst) + + def validate_frag_payload_len6(self, rx, proto, payload_len_expected): + payload_total = 0 + for p in rx: + payload_total += p[IPv6].plen + + # First fragment has proto + payload_total -= len(proto()) + + # Every fragment has IPv6 fragment header + payload_total -= len(IPv6ExtHdrFragment()) * len(rx) + + self.assertEqual(payload_total, payload_len_expected) + + def validate_frag4(self, p4_frag, p_ip4_expected): + self.assertFalse(p4_frag.haslayer(IPv6)) + self.assertTrue(p4_frag.haslayer(IP)) + self.assertTrue(p4_frag[IP].frag != 0 or p4_frag[IP].flags.MF) + self.assertEqual(p4_frag[IP].src, p_ip4_expected.src) + self.assertEqual(p4_frag[IP].dst, p_ip4_expected.dst) + + def validate_frag_payload_len4(self, rx, proto, payload_len_expected): + payload_total = 0 + for p in rx: + payload_total += len(p[IP].payload) + + # First fragment has proto + payload_total -= len(proto()) + + self.assertEqual(payload_total, payload_len_expected) + + def payload(self, len): + return 'x' * len + + def test_map_t(self): + """ MAP-T """ + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001:db8::/32' + map_src = '1234:5678:90ab:cdef::/64' + ip4_pfx = '192.168.0.0/24' + tag = 'MAP-T Tag.' + + self.vapi.map_add_domain(ip6_prefix=map_dst, + ip4_prefix=ip4_pfx, + ip6_src=map_src, + ea_bits_len=16, + psid_offset=6, + psid_length=4, + mtu=1500, + tag=tag) + + # Enable MAP-T on interfaces. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=1) + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg1.sw_if_index, + is_translation=1) + + # Ensure MAP doesn't steal all packets! + v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 100)) + rx = self.send_and_expect(self.pg0, v4*1, self.pg0) + v4_reply = v4[1] + v4_reply.ttl -= 1 + for p in rx: + self.validate(p[1], v4_reply) + # Ensure MAP doesn't steal all packets + v6 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / + IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) / + UDP(sport=20000, dport=10000) / + Raw(b'\xa5' * 100)) + rx = self.send_and_expect(self.pg1, v6*1, self.pg1) + v6_reply = v6[1] + v6_reply.hlim -= 1 + for p in rx: + self.validate(p[1], v6_reply) + + map_route = VppIpRoute(self, + "2001:db8::", + 32, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index, + proto=DpoProto.DPO_PROTO_IP6)]) + map_route.add_vpp_config() + + # + # Send a v4 packet that will be translated + # + p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1') + payload = TCP(sport=0xabcd, dport=0xabcd) + + p4 = (p_ether / p_ip4 / payload) + p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", + dst="2001:db8:1f0::c0a8:1:f") / payload) + p6_translated.hlim -= 1 + rx = self.send_and_expect(self.pg0, p4*1, self.pg1) + for p in rx: + self.validate(p[1], p6_translated) + + # Send back an IPv6 packet that will be "untranslated" + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + p6 = (p_ether6 / p_ip6 / payload) + p4_translated = (IP(src='192.168.0.1', + dst=self.pg0.remote_ip4) / payload) + p4_translated.id = 0 + p4_translated.ttl -= 1 + rx = self.send_and_expect(self.pg1, p6*1, self.pg0) + for p in rx: + self.validate(p[1], p4_translated) + + # IPv4 TTL=0 + ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=0) + p4 = (p_ether / ip4_ttl_expired / payload) + + icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4, + dst=self.pg0.remote_ip4) / + ICMP(type='time-exceeded', + code='ttl-zero-during-transit') / + IP(src=self.pg0.remote_ip4, + dst='192.168.0.1', ttl=0) / payload) + rx = self.send_and_expect(self.pg0, p4*1, self.pg0) + for p in rx: + self.validate(p[1], icmp4_reply) + + # IPv4 TTL=1 + ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=1) + p4 = (p_ether / ip4_ttl_expired / payload) + + icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4, + dst=self.pg0.remote_ip4) / + ICMP(type='time-exceeded', + code='ttl-zero-during-transit') / + IP(src=self.pg0.remote_ip4, + dst='192.168.0.1', ttl=1) / payload) + rx = self.send_and_expect(self.pg0, p4*1, self.pg0) + for p in rx: + self.validate(p[1], icmp4_reply) + + # IPv6 Hop limit at BR + ip6_hlim_expired = IPv6(hlim=1, src='2001:db8:1ab::c0a8:1:ab', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + p6 = (p_ether6 / ip6_hlim_expired / payload) + + icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6, + dst="2001:db8:1ab::c0a8:1:ab") / + ICMPv6TimeExceeded(code=0) / + IPv6(src="2001:db8:1ab::c0a8:1:ab", + dst='1234:5678:90ab:cdef:ac:1001:200:0', + hlim=1) / payload) + rx = self.send_and_expect(self.pg1, p6*1, self.pg1) + for p in rx: + self.validate(p[1], icmp6_reply) + + # IPv6 Hop limit beyond BR + ip6_hlim_expired = IPv6(hlim=0, src='2001:db8:1ab::c0a8:1:ab', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + p6 = (p_ether6 / ip6_hlim_expired / payload) + + icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6, + dst="2001:db8:1ab::c0a8:1:ab") / + ICMPv6TimeExceeded(code=0) / + IPv6(src="2001:db8:1ab::c0a8:1:ab", + dst='1234:5678:90ab:cdef:ac:1001:200:0', + hlim=0) / payload) + rx = self.send_and_expect(self.pg1, p6*1, self.pg1) + for p in rx: + self.validate(p[1], icmp6_reply) + + # IPv4 Well-known port + p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1') + payload = UDP(sport=200, dport=200) + p4 = (p_ether / p_ip4 / payload) + self.send_and_assert_no_replies(self.pg0, p4*1) + + # IPv6 Well-known port + payload = UDP(sport=200, dport=200) + p6 = (p_ether6 / p_ip6 / payload) + self.send_and_assert_no_replies(self.pg1, p6*1) + + # UDP packet fragmentation + payload_len = 1453 + payload = UDP(sport=40000, dport=4000) / self.payload(payload_len) + p4 = (p_ether / p_ip4 / payload) + self.pg_enable_capture() + self.pg0.add_stream(p4) + self.pg_start() + rx = self.pg1.get_capture(2) + + p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0', + dst='2001:db8:1e0::c0a8:1:e') + for p in rx: + self.validate_frag6(p, p_ip6_translated) + + self.validate_frag_payload_len6(rx, UDP, payload_len) + + # UDP packet fragmentation send fragments + payload_len = 1453 + payload = UDP(sport=40000, dport=4000) / self.payload(payload_len) + p4 = (p_ether / p_ip4 / payload) + frags = fragment_rfc791(p4, fragsize=1000) + self.pg_enable_capture() + self.pg0.add_stream(frags) + self.pg_start() + rx = self.pg1.get_capture(2) + + for p in rx: + self.validate_frag6(p, p_ip6_translated) + + self.validate_frag_payload_len6(rx, UDP, payload_len) + + # Send back an fragmented IPv6 UDP packet that will be "untranslated" + payload = UDP(sport=4000, dport=40000) / self.payload(payload_len) + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6 = IPv6(src='2001:db8:1e0::c0a8:1:e', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + p6 = (p_ether6 / p_ip6 / payload) + frags6 = fragment_rfc8200(p6, identification=0xdcba, fragsize=1000) + + p_ip4_translated = IP(src='192.168.0.1', dst=self.pg0.remote_ip4) + p4_translated = (p_ip4_translated / payload) + p4_translated.id = 0 + p4_translated.ttl -= 1 + + self.pg_enable_capture() + self.pg1.add_stream(frags6) + self.pg_start() + rx = self.pg0.get_capture(2) + + for p in rx: + self.validate_frag4(p, p4_translated) + + self.validate_frag_payload_len4(rx, UDP, payload_len) + + # ICMP packet fragmentation + payload = ICMP(id=6529) / self.payload(payload_len) + p4 = (p_ether / p_ip4 / payload) + self.pg_enable_capture() + self.pg0.add_stream(p4) + self.pg_start() + rx = self.pg1.get_capture(2) + + p_ip6_translated = IPv6(src='1234:5678:90ab:cdef:ac:1001:200:0', + dst='2001:db8:160::c0a8:1:6') + for p in rx: + self.validate_frag6(p, p_ip6_translated) + + self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len) + + # ICMP packet fragmentation send fragments + payload = ICMP(id=6529) / self.payload(payload_len) + p4 = (p_ether / p_ip4 / payload) + frags = fragment_rfc791(p4, fragsize=1000) + self.pg_enable_capture() + self.pg0.add_stream(frags) + self.pg_start() + rx = self.pg1.get_capture(2) + + for p in rx: + self.validate_frag6(p, p_ip6_translated) + + self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len) + + # TCP MSS clamping + self.vapi.map_param_set_tcp(1300) + + # + # Send a v4 TCP SYN packet that will be translated and MSS clamped + # + p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1') + payload = TCP(sport=0xabcd, dport=0xabcd, flags="S", + options=[('MSS', 1460)]) + + p4 = (p_ether / p_ip4 / payload) + p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", + dst="2001:db8:1f0::c0a8:1:f") / payload) + p6_translated.hlim -= 1 + p6_translated[TCP].options = [('MSS', 1300)] + rx = self.send_and_expect(self.pg0, p4*1, self.pg1) + for p in rx: + self.validate(p[1], p6_translated) + + # Send back an IPv6 packet that will be "untranslated" + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + p6 = (p_ether6 / p_ip6 / payload) + p4_translated = (IP(src='192.168.0.1', + dst=self.pg0.remote_ip4) / payload) + p4_translated.id = 0 + p4_translated.ttl -= 1 + p4_translated[TCP].options = [('MSS', 1300)] + rx = self.send_and_expect(self.pg1, p6*1, self.pg0) + for p in rx: + self.validate(p[1], p4_translated) + + # TCP MSS clamping cleanup + self.vapi.map_param_set_tcp(0) + + # Enable icmp6 param to get back ICMPv6 unreachable messages in case + # of security check fails + self.vapi.map_param_set_icmp6(enable_unreachable=1) + + # Send back an IPv6 packet that will be droppped due to security + # check fail + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6_sec_check_fail = IPv6(src='2001:db8:1fe::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + payload = TCP(sport=0xabcd, dport=0xabcd) + p6 = (p_ether6 / p_ip6_sec_check_fail / payload) + + self.pg_send(self.pg1, p6*1) + self.pg0.get_capture(0, timeout=1) + rx = self.pg1.get_capture(1) + + icmp6_reply = (IPv6(hlim=255, src=self.pg1.local_ip6, + dst='2001:db8:1fe::c0a8:1:f') / + ICMPv6DestUnreach(code=5) / + p_ip6_sec_check_fail / payload) + + for p in rx: + self.validate(p[1], icmp6_reply) + + # ICMPv6 unreachable messages cleanup + self.vapi.map_param_set_icmp6(enable_unreachable=0) + + def test_map_t_ip6_psid(self): + """ MAP-T v6->v4 PSID validation""" + + # + # Add a domain that maps from pg0 to pg1 + # + map_dst = '2001:db8::/32' + map_src = '1234:5678:90ab:cdef::/64' + ip4_pfx = '192.168.0.0/24' + tag = 'MAP-T Test Domain' + + self.vapi.map_add_domain(ip6_prefix=map_dst, + ip4_prefix=ip4_pfx, + ip6_src=map_src, + ea_bits_len=16, + psid_offset=6, + psid_length=4, + mtu=1500, + tag=tag) + + # Enable MAP-T on interfaces. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=1) + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg1.sw_if_index, + is_translation=1) + + map_route = VppIpRoute(self, + "2001:db8::", + 32, + [VppRoutePath(self.pg1.remote_ip6, + self.pg1.sw_if_index, + proto=DpoProto.DPO_PROTO_IP6)]) + map_route.add_vpp_config() + + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + + # Send good IPv6 source port, ensure translated IPv4 received + payload = TCP(sport=0xabcd, dport=80) + p6 = (p_ether6 / p_ip6 / payload) + p4_translated = (IP(src='192.168.0.1', + dst=self.pg0.remote_ip4) / payload) + p4_translated.id = 0 + p4_translated.ttl -= 1 + rx = self.send_and_expect(self.pg1, p6*1, self.pg0) + for p in rx: + self.validate(p[1], p4_translated) + + # Send bad IPv6 source port, ensure translated IPv4 not received + payload = TCP(sport=0xdcba, dport=80) + p6 = (p_ether6 / p_ip6 / payload) + self.send_and_assert_no_replies(self.pg1, p6*1) + + def test_map_t_pre_resolve(self): + """ MAP-T pre-resolve""" + + # Add a domain that maps from pg0 to pg1 + map_dst = '2001:db8::/32' + map_src = '1234:5678:90ab:cdef::/64' + ip4_pfx = '192.168.0.0/24' + tag = 'MAP-T Test Domain.' + + self.vapi.map_add_domain(ip6_prefix=map_dst, + ip4_prefix=ip4_pfx, + ip6_src=map_src, + ea_bits_len=16, + psid_offset=6, + psid_length=4, + mtu=1500, + tag=tag) + + # Enable MAP-T on interfaces. + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg0.sw_if_index, + is_translation=1) + self.vapi.map_if_enable_disable(is_enable=1, + sw_if_index=self.pg1.sw_if_index, + is_translation=1) + + # Enable pre-resolve option + self.vapi.map_param_add_del_pre_resolve(ip4_nh_address="10.1.2.3", + ip6_nh_address="4001::1", + is_add=1) + + # Add a route to 4001::1 and expect the translated traffic to be + # sent via that route next-hop. + pre_res_route6 = VppIpRoute(self, "4001::1", 128, + [VppRoutePath(self.pg1.remote_hosts[2].ip6, + self.pg1.sw_if_index)]) + pre_res_route6.add_vpp_config() + + # Add a route to 10.1.2.3 and expect the "untranslated" traffic to be + # sent via that route next-hop. + pre_res_route4 = VppIpRoute(self, "10.1.2.3", 32, + [VppRoutePath(self.pg0.remote_hosts[1].ip4, + self.pg0.sw_if_index)]) + pre_res_route4.add_vpp_config() + + # Send an IPv4 packet that will be translated + p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + p_ip4 = IP(src=self.pg0.remote_ip4, dst='192.168.0.1') + payload = TCP(sport=0xabcd, dport=0xabcd) + p4 = (p_ether / p_ip4 / payload) + + p6_translated = (IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", + dst="2001:db8:1f0::c0a8:1:f") / payload) + p6_translated.hlim -= 1 + + rx = self.send_and_expect(self.pg0, p4*1, self.pg1) + for p in rx: + self.assertEqual(p[Ether].dst, self.pg1.remote_hosts[2].mac) + self.validate(p[1], p6_translated) + + # Send back an IPv6 packet that will be "untranslated" + p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) + p_ip6 = IPv6(src='2001:db8:1f0::c0a8:1:f', + dst='1234:5678:90ab:cdef:ac:1001:200:0') + p6 = (p_ether6 / p_ip6 / payload) + + p4_translated = (IP(src='192.168.0.1', + dst=self.pg0.remote_ip4) / payload) + p4_translated.id = 0 + p4_translated.ttl -= 1 + + rx = self.send_and_expect(self.pg1, p6*1, self.pg0) + for p in rx: + self.assertEqual(p[Ether].dst, self.pg0.remote_hosts[1].mac) + self.validate(p[1], p4_translated) + + # Cleanup pre-resolve option + self.vapi.map_param_add_del_pre_resolve(ip4_nh_address="10.1.2.3", + ip6_nh_address="4001::1", + is_add=0) + + +if __name__ == '__main__': + unittest.main(testRunner=VppTestRunner) |