X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_map.py;h=565f7da6491d2a64e9fc44544b7a8e23cd6d73d0;hb=853cc9f2ad3ee52cbdd891fb09d51c25678baed0;hp=f1388b39c65fdb42ccb0a653d59bb7407501af0d;hpb=097fa66b986f06281f603767d321ab13ab6c88c3;p=vpp.git diff --git a/test/test_map.py b/test/test_map.py index f1388b39c65..565f7da6491 100644 --- a/test/test_map.py +++ b/test/test_map.py @@ -1,21 +1,29 @@ -#!/usr/bin/env python +#!/usr/bin/env python3 import ipaddress import unittest -from ipaddress import IPv6Network, IPv4Network -from framework import VppTestCase, VppTestRunner +from framework import VppTestCase +from asfframework import 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, Raw -from scapy.layers.inet import IP, UDP, ICMP, TCP, fragment -from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded +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 """ + """MAP Test Case""" @classmethod def setUpClass(cls): @@ -35,6 +43,8 @@ class TestMAP(VppTestCase): 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() @@ -44,46 +54,50 @@ class TestMAP(VppTestCase): def tearDown(self): super(TestMAP, self).tearDown() + for i in self.pg_interfaces: + for t in (0, 1): + self.vapi.map_if_enable_disable( + is_enable=0, sw_if_index=i.sw_if_index, is_translation=t + ) i.unconfig_ip4() i.unconfig_ip6() i.admin_down() - def send_and_assert_encapped(self, tx, ip6_src, ip6_dst, dmac=None): + 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(tx) + self.pg0.add_stream(packets) self.pg_enable_capture(self.pg_interfaces) self.pg_start() - rx = self.pg1.get_capture(1) - rx = rx[0] + 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) - 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 - + 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'") + 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. @@ -91,47 +105,101 @@ class TestMAP(VppTestCase): 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 test_map_e(self): - """ MAP-E """ + 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 = 64 - map_route = VppIpRoute(self, - map_br_pfx, - map_br_pfx_len, - [VppRoutePath(self.pg1.remote_ip6, - self.pg1.sw_if_index)]) + 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::/64' - map_src = '3000::1/128' - client_pfx = '192.168.0.0/16' - tag = 'MAP-E tag.' - self.vapi.map_add_domain(ip4_prefix=client_pfx, - ip6_prefix=map_dst, - ip6_src=map_src, - tag=tag) + 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) + 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('\xa5' * 100)) - rx = self.send_and_expect(self.pg0, v4*1, self.pg0) + 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: @@ -140,24 +208,43 @@ class TestMAP(VppTestCase): # # 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('\xa5' * 100)) + 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(v4, "3000::1", "2001::c0a8:0:0") + 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) + 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('\xa5' * 100)) - rx = self.send_and_expect(self.pg1, v6*1, self.pg1) + 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: @@ -165,13 +252,15 @@ class TestMAP(VppTestCase): # # Fire in a V6 encapped packet. - # expect a decapped packet on the inside ip4 link + # 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="2001::1") / - IP(dst=self.pg0.remote_ip4, src='192.168.1.1') / - UDP(sport=20000, dport=10000) / - Raw('\xa5' * 100)) + 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) @@ -185,37 +274,93 @@ class TestMAP(VppTestCase): 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") + 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 = 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(v4, "3000::1", - "2001::c0a8:0:0", - dmac=self.pg1.remote_hosts[2].mac) + 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.modify( + [VppRoutePath(self.pg1.remote_hosts[3].ip6, self.pg1.sw_if_index)] + ) pre_res_route.add_vpp_config() - self.send_and_assert_encapped(v4, "3000::1", - "2001::c0a8:0:0", - dmac=self.pg1.remote_hosts[3].mac) + 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 @@ -224,179 +369,459 @@ class TestMAP(VppTestCase): 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) + + # 1000-sizeof(ip6_header_t) = 960. + frags = fragment_rfc791(v4[1], 960) + 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 + return "x" * len def test_map_t(self): - """ MAP-T """ + """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) + 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) + 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('\xa5' * 100)) - rx = self.send_and_expect(self.pg0, v4*1, self.pg0) + 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('\xa5' * 100)) - rx = self.send_and_expect(self.pg1, v6*1, self.pg1) + 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 = 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) + 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) + 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) + 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) + rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0) for p in rx: self.validate(p[1], p4_translated) - # IPv4 TTL - 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) + # 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=255, 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) - ''' - This one is broken, cause it would require hairpinning... - # IPv4 TTL TTL1 - 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=0) / payload - rx = self.send_and_expect(self.pg0, p4*1, self.pg0) + # 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=255, 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 - 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) + + # 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') + 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) + 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) + 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) - # Packet fragmentation - payload = UDP(sport=40000, dport=4000) / self.payload(1453) - p4 = (p_ether / p_ip4 / payload) + # 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: - pass - # TODO: Manual validation - # self.validate(p[1], icmp4_reply) - - # Packet fragmentation send fragments - payload = UDP(sport=40000, dport=4000) / self.payload(1453) - p4 = (p_ether / p_ip4 / payload) - frags = fragment(p4, fragsize=1000) + 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: - pass - # p.show2() - # reass_pkt = reassemble(rx) - # p4_reply.ttl -= 1 - # p4_reply.id = 256 - # self.validate(reass_pkt, p4_reply) + 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) @@ -405,33 +830,222 @@ class TestMAP(VppTestCase): # 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)]) + 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) - 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) + # 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 - p6_translated[TCP].options = [('MSS', 1300)] - rx = self.send_and_expect(self.pg0, p4*1, self.pg1) + + 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) + 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) + + 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__': +if __name__ == "__main__": unittest.main(testRunner=VppTestRunner)