#!/usr/bin/env python3 """ 6RD RFC5969 functional tests """ import unittest from scapy.layers.inet import IP, UDP, Ether from scapy.layers.inet6 import IPv6 from scapy.packet import Raw from framework import VppTestCase, VppTestRunner from vpp_ip import DpoProto from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, FibPathProto from socket import AF_INET, AF_INET6, inet_pton """ Test6rd is a subclass of VPPTestCase classes. 6RD tests. """ class Test6RD(VppTestCase): """ 6RD Test Case """ @classmethod def setUpClass(cls): super(Test6RD, cls).setUpClass() cls.create_pg_interfaces(range(4)) cls.interfaces = list(cls.pg_interfaces) @classmethod def tearDownClass(cls): super(Test6RD, cls).tearDownClass() def setUp(self): super(Test6RD, self).setUp() t4 = VppIpTable(self, 10) t6 = VppIpTable(self, 20, True) t4.add_vpp_config() t6.add_vpp_config() for n in range(4): i = self.pg_interfaces[n] i.admin_up() if (n > 1): i.set_table_ip4(10) i.set_table_ip6(20) i.config_ip4() i.config_ip6() i.disable_ipv6_ra() i.resolve_arp() i.resolve_ndp() def tearDown(self): for i in self.pg_interfaces: i.unconfig_ip4() i.unconfig_ip6() i.set_table_ip4(0) i.set_table_ip6(0) i.admin_down() super(Test6RD, self).tearDown() 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.assertEqual(rx[IPv6].src, expected[IPv6].src) self.assertEqual(rx[IPv6].dst, expected[IPv6].dst) self.assertEqual(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(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg0.local_ip4, security_check=True) 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) self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) def test_6rd_ip6_to_ip4_vrf(self): """ ip6 -> ip4 (encap) 6rd VRF test """ p_ether = Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) p_ip6 = IPv6(src="1::1", dst="2002:AC10:0402::1", nh='UDP') rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=20, ip4_table_id=10, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg2.local_ip4, security_check=True) 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.pg2.local_ip4, dst=self.pg3.remote_ip4, proto='ipv6') / p_ip6) rx = self.send_and_expect(self.pg2, p * 10, self.pg3) 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:AC10:0402::1") p_payload = UDP(sport=1234, dport=1234) / Raw(self.payload(plen)) p = (p_ether / p_ip6 / p_payload) p_reply = (IP(src=self.pg2.local_ip4, dst=self.pg3.remote_ip4, proto='ipv6') / p_ip6) rx = self.send_and_assert_no_replies(self.pg0, p * 10) self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) def test_6rd_ip4_to_ip6(self): """ ip4 -> ip6 (decap) 6rd test """ rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg0.local_ip4, security_check=True) self.tunnel_index = rv.sw_if_index rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index) rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg0.local_ip4, security_check=True) self.tunnel_index = rv.sw_if_index 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) self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) def test_6rd_ip4_to_ip6_vrf(self): """ ip4 -> ip6 (decap) 6rd VRF test """ rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=20, ip4_table_id=10, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg2.local_ip4, security_check=True) self.tunnel_index = rv.sw_if_index rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index) rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=20, ip4_table_id=10, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg2.local_ip4, security_check=True) self.tunnel_index = rv.sw_if_index self.vapi.sw_interface_set_table(self.tunnel_index, 1, 20) p_ip6 = (IPv6(src="2002:AC10:0402::1", dst=self.pg3.remote_ip6) / UDP(sport=1234, dport=1234)) p = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) / IP(src=self.pg3.remote_ip4, dst=self.pg2.local_ip4) / p_ip6) p_reply = p_ip6 rx = self.send_and_expect(self.pg2, p * 10, self.pg3) for p in rx: self.validate_4in6(p, p_reply) self.vapi.sw_interface_set_table(self.tunnel_index, 1, 0) self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) def test_6rd_ip4_to_ip6_multiple(self): """ ip4 -> ip6 (decap) 6rd test """ self.tunnel_index = [] rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg0.local_ip4, security_check=True) self.tunnel_index.append(rv.sw_if_index) rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2003::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg1.local_ip4, security_check=True) 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) for i in self.tunnel_index: self.vapi.ipip_6rd_del_tunnel(i) def test_6rd_ip4_to_ip6_suffix(self): """ ip4 -> ip6 (decap) 6rd test """ rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2002::/16', ip4_prefix='172.0.0.0/8', ip4_src=self.pg0.local_ip4, security_check=True) 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) self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) def test_6rd_ip4_to_ip6_sec_check(self): """ ip4 -> ip6 (decap) security check 6rd test """ rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg0.local_ip4, security_check=True) 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) self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) def test_6rd_bgp_tunnel(self): """ 6rd BGP tunnel """ rv = self.vapi.ipip_6rd_add_tunnel(ip6_table_id=0, ip4_table_id=0, ip6_prefix='2002::/16', ip4_prefix='0.0.0.0/0', ip4_src=self.pg0.local_ip4, security_check=False) self.tunnel_index = rv.sw_if_index default_route = VppIpRoute(self, "DEAD::", 16, [VppRoutePath("2002:0808:0808::", self.tunnel_index)]) 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) ip4_route.remove_vpp_config() default_route.remove_vpp_config() self.vapi.ipip_6rd_del_tunnel(self.tunnel_index) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)