# # 6RD RFC5969 functional tests # import unittest from scapy.layers.inet import IP, UDP, ICMP from scapy.layers.inet6 import IPv6 from scapy.layers.l2 import Ether, GRE from scapy.packet import Raw from framework import VppTestCase from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto from util import ppp from ipaddress import * """ Test6rd is a subclass of VPPTestCase classes. 6RD tests. """ class Test6RD(VppTestCase): """ 6RD Test Case """ @classmethod def setUpClass(cls): super(Test6RD, cls).setUpClass() try: cls.create_pg_interfaces(range(2)) cls.interfaces = list(cls.pg_interfaces) except Exception: super(Test6RD, cls).tearDownClass() raise def setUp(cls): super(Test6RD, cls).setUp() try: for i in cls.interfaces: i.admin_up() i.config_ip4() i.config_ip6() i.disable_ipv6_ra() i.resolve_arp() i.resolve_ndp() except Exception: super(Test6RD, cls).tearDown() raise def tearDown(self): super(Test6RD, self).tearDown() if not self.vpp_dead: self.vapi.cli("show hardware") for i in self.pg_interfaces: i.unconfig_ip4() i.unconfig_ip6() i.admin_down() if type(self.tunnel_index) is list: for sw_if_index in self.tunnel_index: rv = self.vapi.ipip_6rd_del_tunnel(sw_if_index) self.assertEqual(rv.retval, 0) else: rv = self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) self.assertEqual(rv.retval, 0) self.vapi.cli("show error") def validate_6in4(self, rx, expected): if IP not in rx: self.fail() if IPv6 not in rx: self.fail() self.assertEqual(rx[IP].src, expected[IP].src) self.assertEqual(rx[IP].dst, expected[IP].dst) self.assertEqual(rx[IP].proto, expected[IP].proto) self.assertEqual(rx[IPv6].src, expected[IPv6].src) self.assertEqual(rx[IPv6].dst, expected[IPv6].dst) def validate_4in6(self, rx, expected): if IPv6 not in rx: self.fail() if IP in rx: self.fail() self.assertTrue(rx[IPv6].src == expected[IPv6].src) self.assertTrue(rx[IPv6].dst == expected[IPv6].dst) self.assertTrue(rx[IPv6].nh == expected[IPv6].nh) def payload(self, len): return 'x' * len def test_6rd_ip6_to_ip4(self): """ ip6 -> ip4 (encap) 6rd test """ p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1", nh='UDP') rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2002::').packed), 16, str(ip_address('0.0.0.0').packed), 0, str(ip_address(self.pg0.local_ip4).packed), True) self.assertEqual(rv.retval, 0) self.tunnel_index = rv.sw_if_index self.vapi.cli("show ip6 fib") p_payload = UDP(sport=1234, dport=1234) p = (p_ether / p_ip6 / p_payload) p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4, proto='ipv6') / p_ip6) rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_6in4(p, p_reply) # MTU tests (default is 1480) plen = 1481 - 40 - 8 p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1") p_payload = UDP(sport=1234, dport=1234) / Raw(self.payload(plen)) p = (p_ether / p_ip6 / p_payload) p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4, proto='ipv6') / p_ip6) rx = self.send_and_assert_no_replies(self.pg0, p*10) def test_6rd_ip4_to_ip6(self): """ ip4 -> ip6 (decap) 6rd test """ rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2002::').packed), 16, str(ip_address('0.0.0.0').packed), 0, str(ip_address(self.pg0.local_ip4).packed), True) self.assertEqual(rv.retval, 0) self.tunnel_index = rv.sw_if_index rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index) self.assertEqual(rv.retval, 0) rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2002::').packed), 16, str(ip_address('0.0.0.0').packed), 0, str(ip_address(self.pg0.local_ip4).packed), True) self.tunnel_index = rv.sw_if_index self.assertEqual(rv.retval, 0) p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) / UDP(sport=1234, dport=1234)) p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) / p_ip6) p_reply = p_ip6 rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_4in6(p, p_reply) def test_6rd_ip4_to_ip6_multiple(self): """ ip4 -> ip6 (decap) 6rd test """ self.tunnel_index = [] rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2002::').packed), 16, str(ip_address('0.0.0.0').packed), 0, str(ip_address(self.pg0.local_ip4).packed), True) self.assertEqual(rv.retval, 0) self.tunnel_index.append(rv.sw_if_index) rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2003::').packed), 16, str(ip_address('0.0.0.0').packed), 0, str(ip_address(self.pg1.local_ip4).packed), True) self.assertEqual(rv.retval, 0) self.tunnel_index.append(rv.sw_if_index) self.vapi.cli("show ip6 fib") p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) p_ip6_1 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) / UDP(sport=1234, dport=1234)) p_ip6_2 = (IPv6(src="2003:AC10:0202::1", dst=self.pg1.remote_ip6) / UDP(sport=1234, dport=1234)) p = (p_ether / p_ip4 / p_ip6_1) rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_4in6(p, p_ip6_1) p = (p_ether / p_ip4 / p_ip6_2) rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_4in6(p, p_ip6_2) def test_6rd_ip4_to_ip6_suffix(self): """ ip4 -> ip6 (decap) 6rd test """ rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2002::').packed), 16, str(ip_address('172.0.0.0').packed), 8, str(ip_address(self.pg0.local_ip4).packed), True) self.assertEqual(rv.retval, 0) self.tunnel_index = rv.sw_if_index self.vapi.cli("show ip6 fib") p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) p_ip6 = (IPv6(src="2002:1002:0200::1", dst=self.pg1.remote_ip6) / UDP(sport=1234, dport=1234)) p = (p_ether / p_ip4 / p_ip6) rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_4in6(p, p_ip6) def test_6rd_ip4_to_ip6_sec_check(self): """ ip4 -> ip6 (decap) security check 6rd test """ rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2002::').packed), 16, str(ip_address('0.0.0.0').packed), 0, str(ip_address(self.pg0.local_ip4).packed), True) self.assertEqual(rv.retval, 0) self.tunnel_index = rv.sw_if_index self.vapi.cli("show ip6 fib") p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) / UDP(sport=1234, dport=1234)) p_ip6_fail = (IPv6(src="2002:DEAD:0202::1", dst=self.pg1.remote_ip6) / UDP(sport=1234, dport=1234)) p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) / p_ip6) p_reply = p_ip6 rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_4in6(p, p_reply) p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) / p_ip6_fail) rx = self.send_and_assert_no_replies(self.pg0, p*10) def test_6rd_bgp_tunnel(self): """ 6rd BGP tunnel """ rv = self.vapi.ipip_6rd_add_tunnel( 0, str(ip_address('2002::').packed), 16, str(ip_address('0.0.0.0').packed), 0, str(ip_address(self.pg0.local_ip4).packed), False) self.assertEqual(rv.retval, 0) self.tunnel_index = rv.sw_if_index default_route = VppIpRoute( self, "DEAD::", 16, [VppRoutePath("2002:0808:0808::", self.tunnel_index, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) default_route.add_vpp_config() ip4_route = VppIpRoute(self, "8.0.0.0", 8, [VppRoutePath(self.pg1.remote_ip4, 0xFFFFFFFF)]) ip4_route.add_vpp_config() # Via recursive route 6 -> 4 p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src="1::1", dst="DEAD:BEEF::1") / UDP(sport=1234, dport=1234)) p_reply = (IP(src=self.pg0.local_ip4, dst="8.8.8.8", proto='ipv6') / IPv6(src='1::1', dst='DEAD:BEEF::1', nh='UDP')) rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_6in4(p, p_reply) # Via recursive route 4 -> 6 (Security check must be disabled) p_ip6 = (IPv6(src="DEAD:BEEF::1", dst=self.pg1.remote_ip6) / UDP(sport=1234, dport=1234)) p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src="8.8.8.8", dst=self.pg0.local_ip4) / p_ip6) p_reply = p_ip6 rx = self.send_and_expect(self.pg0, p*10, self.pg1) for p in rx: self.validate_4in6(p, p_reply) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)