+class TestNAT44Out2InDPO(MethodHolder):
+ """ NAT44 Test Cases using out2in DPO """
+
+ @classmethod
+ def setUpConstants(cls):
+ super(TestNAT44Out2InDPO, cls).setUpConstants()
+ cls.vpp_cmdline.extend(["nat", "{", "out2in dpo", "}"])
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestNAT44Out2InDPO, cls).setUpClass()
+
+ try:
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.nat_addr = '10.0.0.3'
+ cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
+ cls.dst_ip4 = '192.168.70.1'
+
+ cls.create_pg_interfaces(range(2))
+
+ cls.pg0.admin_up()
+ cls.pg0.config_ip4()
+ cls.pg0.resolve_arp()
+
+ cls.pg1.admin_up()
+ cls.pg1.config_ip6()
+ cls.pg1.resolve_ndp()
+
+ cls.vapi.ip_add_del_route(is_ipv6=True, dst_address='\x00'*16,
+ dst_address_length=0,
+ next_hop_address=cls.pg1.remote_ip6n,
+ next_hop_sw_if_index=cls.pg1.sw_if_index)
+
+ except Exception:
+ super(TestNAT44Out2InDPO, cls).tearDownClass()
+ raise
+
+ def configure_xlat(self):
+ self.dst_ip6_pfx = '1:2:3::'
+ self.dst_ip6_pfx_n = socket.inet_pton(socket.AF_INET6,
+ self.dst_ip6_pfx)
+ self.dst_ip6_pfx_len = 96
+ self.src_ip6_pfx = '4:5:6::'
+ self.src_ip6_pfx_n = socket.inet_pton(socket.AF_INET6,
+ self.src_ip6_pfx)
+ self.src_ip6_pfx_len = 96
+ self.vapi.map_add_domain(self.dst_ip6_pfx_n, self.dst_ip6_pfx_len,
+ self.src_ip6_pfx_n, self.src_ip6_pfx_len,
+ '\x00\x00\x00\x00', 0, is_translation=1,
+ is_rfc6052=1)
+
+ def test_464xlat_ce(self):
+ """ Test 464XLAT CE with NAT44 """
+
+ self.configure_xlat()
+
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_add_del_address_range(self.nat_addr_n, self.nat_addr_n)
+
+ out_src_ip6 = self.compose_ip6(self.dst_ip4, self.dst_ip6_pfx,
+ self.dst_ip6_pfx_len)
+ out_dst_ip6 = self.compose_ip6(self.nat_addr, self.src_ip6_pfx,
+ self.src_ip6_pfx_len)
+
+ try:
+ pkts = self.create_stream_in(self.pg0, self.pg1, self.dst_ip4)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out_ip6(capture, nat_ip=out_dst_ip6,
+ dst_ip=out_src_ip6)
+
+ pkts = self.create_stream_out_ip6(self.pg1, out_src_ip6,
+ out_dst_ip6)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ self.verify_capture_in(capture, self.pg0)
+ finally:
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index,
+ is_add=0)
+ self.vapi.nat44_add_del_address_range(self.nat_addr_n,
+ self.nat_addr_n, is_add=0)
+
+ def test_464xlat_ce_no_nat(self):
+ """ Test 464XLAT CE without NAT44 """
+
+ self.configure_xlat()
+
+ out_src_ip6 = self.compose_ip6(self.dst_ip4, self.dst_ip6_pfx,
+ self.dst_ip6_pfx_len)
+ out_dst_ip6 = self.compose_ip6(self.pg0.remote_ip4, self.src_ip6_pfx,
+ self.src_ip6_pfx_len)
+
+ pkts = self.create_stream_in(self.pg0, self.pg1, self.dst_ip4)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out_ip6(capture, dst_ip=out_src_ip6,
+ nat_ip=out_dst_ip6, same_port=True)
+
+ pkts = self.create_stream_out_ip6(self.pg1, out_src_ip6, out_dst_ip6)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ self.verify_capture_in(capture, self.pg0)
+
+