+++ /dev/null
-#!/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)
Code Review / vpp.git / blobdiff