cls.pg4._local_ip4n = socket.inet_pton(socket.AF_INET, i.local_ip4)
cls.pg4._remote_hosts[0]._ip4 = "172.16.255.2"
cls.pg4.set_table_ip4(10)
- cls.pg5._local_ip4 = "172.16.255.3"
+ cls.pg5._local_ip4 = "172.17.255.3"
cls.pg5._local_ip4n = socket.inet_pton(socket.AF_INET, i.local_ip4)
- cls.pg5._remote_hosts[0]._ip4 = "172.16.255.4"
+ cls.pg5._remote_hosts[0]._ip4 = "172.17.255.4"
cls.pg5.set_table_ip4(10)
cls.pg6._local_ip4 = "172.16.255.1"
cls.pg6._local_ip4n = socket.inet_pton(socket.AF_INET, i.local_ip4)
intf.is_inside,
is_add=0)
+ interfaces = self.vapi.snat_interface_output_feature_dump()
+ for intf in interfaces:
+ self.vapi.snat_interface_add_del_output_feature(intf.sw_if_index,
+ intf.is_inside,
+ is_add=0)
+
static_mappings = self.vapi.snat_static_mapping_dump()
for sm in static_mappings:
self.vapi.snat_add_static_mapping(sm.local_ip_address,
self.logger.error(ppp("Unexpected or invalid packet:", packet))
raise
- def test_hairpinning_unknown_proto(self):
+ def test_hairpinning_static_unknown_proto(self):
""" 1:1 NAT translate packet with unknown protocol - hairpinning """
host = self.pg0.remote_hosts[0]
self.logger.error(ppp("Unexpected or invalid packet:", packet))
raise
+ def test_unknown_proto(self):
+ """ SNAT translate packet with unknown protocol """
+ self.snat_add_address(self.snat_addr)
+ self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # in2out
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=20))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ GRE() /
+ IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IP].src, self.snat_addr)
+ self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+ self.assertTrue(packet.haslayer(GRE))
+ self.check_ip_checksum(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # out2in
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
+ GRE() /
+ IP(src=self.pg3.remote_ip4, dst=self.pg2.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IP].src, self.pg1.remote_ip4)
+ self.assertEqual(packet[IP].dst, self.pg0.remote_ip4)
+ self.assertTrue(packet.haslayer(GRE))
+ self.check_ip_checksum(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_hairpinning_unknown_proto(self):
+ """ SNAT translate packet with unknown protocol - hairpinning """
+ host = self.pg0.remote_hosts[0]
+ server = self.pg0.remote_hosts[1]
+ host_in_port = 1234
+ host_out_port = 0
+ server_in_port = 5678
+ server_out_port = 8765
+ server_nat_ip = "10.0.0.11"
+
+ self.snat_add_address(self.snat_addr)
+ self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # add static mapping for server
+ self.snat_add_static_mapping(server.ip4, server_nat_ip)
+
+ # host to server
+ p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+ IP(src=host.ip4, dst=server_nat_ip) /
+ TCP(sport=host_in_port, dport=server_out_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+
+ p = (Ether(dst=self.pg0.local_mac, src=host.mac) /
+ IP(src=host.ip4, dst=server_nat_ip) /
+ GRE() /
+ IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IP].src, self.snat_addr)
+ self.assertEqual(packet[IP].dst, server.ip4)
+ self.assertTrue(packet.haslayer(GRE))
+ self.check_ip_checksum(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # server to host
+ p = (Ether(dst=self.pg0.local_mac, src=server.mac) /
+ IP(src=server.ip4, dst=self.snat_addr) /
+ GRE() /
+ IP(src=self.pg3.remote_ip4, dst=self.pg2.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IP].src, server_nat_ip)
+ self.assertEqual(packet[IP].dst, host.ip4)
+ self.assertTrue(packet.haslayer(GRE))
+ self.check_ip_checksum(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_output_feature(self):
+ """ S-NAT interface output feature (in2out postrouting) """
+ self.snat_add_address(self.snat_addr)
+ self.vapi.snat_interface_add_del_output_feature(self.pg0.sw_if_index)
+ self.vapi.snat_interface_add_del_output_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # in2out
+ pkts = self.create_stream_in(self.pg0, self.pg1)
+ 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(capture)
+
+ # out2in
+ pkts = self.create_stream_out(self.pg1)
+ 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)
+
+ def test_output_feature_vrf_aware(self):
+ """ S-NAT interface output feature VRF aware (in2out postrouting) """
+ nat_ip_vrf10 = "10.0.0.10"
+ nat_ip_vrf20 = "10.0.0.20"
+
+ self.vapi.ip_add_del_route(dst_address=self.pg3.remote_ip4n,
+ dst_address_length=32,
+ next_hop_address=self.pg3.remote_ip4n,
+ next_hop_sw_if_index=self.pg3.sw_if_index,
+ table_id=10)
+ self.vapi.ip_add_del_route(dst_address=self.pg3.remote_ip4n,
+ dst_address_length=32,
+ next_hop_address=self.pg3.remote_ip4n,
+ next_hop_sw_if_index=self.pg3.sw_if_index,
+ table_id=20)
+
+ self.snat_add_address(nat_ip_vrf10, vrf_id=10)
+ self.snat_add_address(nat_ip_vrf20, vrf_id=20)
+ self.vapi.snat_interface_add_del_output_feature(self.pg4.sw_if_index)
+ self.vapi.snat_interface_add_del_output_feature(self.pg6.sw_if_index)
+ self.vapi.snat_interface_add_del_output_feature(self.pg3.sw_if_index,
+ is_inside=0)
+
+ # in2out VRF 10
+ pkts = self.create_stream_in(self.pg4, self.pg3)
+ self.pg4.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg3.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=nat_ip_vrf10)
+
+ # out2in VRF 10
+ pkts = self.create_stream_out(self.pg3, dst_ip=nat_ip_vrf10)
+ self.pg3.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg4.get_capture(len(pkts))
+ self.verify_capture_in(capture, self.pg4)
+
+ # in2out VRF 20
+ pkts = self.create_stream_in(self.pg6, self.pg3)
+ self.pg6.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg3.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=nat_ip_vrf20)
+
+ # out2in VRF 20
+ pkts = self.create_stream_out(self.pg3, dst_ip=nat_ip_vrf20)
+ self.pg3.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(len(pkts))
+ self.verify_capture_in(capture, self.pg6)
+
+ def test_output_feature_hairpinning(self):
+ """ S-NAT interface output feature hairpinning (in2out postrouting) """
+ host = self.pg0.remote_hosts[0]
+ server = self.pg0.remote_hosts[1]
+ host_in_port = 1234
+ host_out_port = 0
+ server_in_port = 5678
+ server_out_port = 8765
+
+ self.snat_add_address(self.snat_addr)
+ self.vapi.snat_interface_add_del_output_feature(self.pg0.sw_if_index)
+ self.vapi.snat_interface_add_del_output_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # add static mapping for server
+ self.snat_add_static_mapping(server.ip4, self.snat_addr,
+ server_in_port, server_out_port,
+ proto=IP_PROTOS.tcp)
+
+ # send packet from host to server
+ p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
+ IP(src=host.ip4, dst=self.snat_addr) /
+ TCP(sport=host_in_port, dport=server_out_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.snat_addr)
+ self.assertEqual(ip.dst, server.ip4)
+ self.assertNotEqual(tcp.sport, host_in_port)
+ self.assertEqual(tcp.dport, server_in_port)
+ self.check_tcp_checksum(p)
+ host_out_port = tcp.sport
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # send reply from server to host
+ p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+ IP(src=server.ip4, dst=self.snat_addr) /
+ TCP(sport=server_in_port, dport=host_out_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.snat_addr)
+ self.assertEqual(ip.dst, host.ip4)
+ self.assertEqual(tcp.sport, server_out_port)
+ self.assertEqual(tcp.dport, host_in_port)
+ self.check_tcp_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:"), p)
+ raise
+
def tearDown(self):
super(TestSNAT, self).tearDown()
if not self.vpp_dead:
vrf1_pref64_len)
self.verify_capture_in_ip6(capture, dst_ip, self.pg2.remote_ip6)
+ def test_unknown_proto(self):
+ """ NAT64 translate packet with unknown protocol """
+
+ self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n,
+ self.nat_addr_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+ remote_ip6 = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
+
+ # in2out
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=remote_ip6) /
+ TCP(sport=self.tcp_port_in, dport=20))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=remote_ip6, nh=47) /
+ GRE() /
+ IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IP].src, self.nat_addr)
+ self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+ self.assertTrue(packet.haslayer(GRE))
+ self.check_ip_checksum(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # out2in
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ GRE() /
+ IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IPv6].src, remote_ip6)
+ self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
+ self.assertEqual(packet[IPv6].nh, 47)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_hairpinning_unknown_proto(self):
+ """ NAT64 translate packet with unknown protocol - hairpinning """
+
+ client = self.pg0.remote_hosts[0]
+ server = self.pg0.remote_hosts[1]
+ server_tcp_in_port = 22
+ server_tcp_out_port = 4022
+ client_tcp_in_port = 1234
+ client_tcp_out_port = 1235
+ server_nat_ip = "10.0.0.100"
+ client_nat_ip = "10.0.0.110"
+ server_nat_ip_n = socket.inet_pton(socket.AF_INET, server_nat_ip)
+ client_nat_ip_n = socket.inet_pton(socket.AF_INET, client_nat_ip)
+ server_nat_ip6 = self.compose_ip6(server_nat_ip, '64:ff9b::', 96)
+ client_nat_ip6 = self.compose_ip6(client_nat_ip, '64:ff9b::', 96)
+
+ self.vapi.nat64_add_del_pool_addr_range(server_nat_ip_n,
+ client_nat_ip_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+
+ self.vapi.nat64_add_del_static_bib(server.ip6n,
+ server_nat_ip_n,
+ server_tcp_in_port,
+ server_tcp_out_port,
+ IP_PROTOS.tcp)
+
+ self.vapi.nat64_add_del_static_bib(server.ip6n,
+ server_nat_ip_n,
+ 0,
+ 0,
+ IP_PROTOS.gre)
+
+ self.vapi.nat64_add_del_static_bib(client.ip6n,
+ client_nat_ip_n,
+ client_tcp_in_port,
+ client_tcp_out_port,
+ IP_PROTOS.tcp)
+
+ # client to server
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=client.ip6, dst=server_nat_ip6) /
+ TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=client.ip6, dst=server_nat_ip6, nh=IP_PROTOS.gre) /
+ GRE() /
+ IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IPv6].src, client_nat_ip6)
+ self.assertEqual(packet[IPv6].dst, server.ip6)
+ self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # server to client
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=server.ip6, dst=client_nat_ip6, nh=IP_PROTOS.gre) /
+ GRE() /
+ IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IPv6].src, server_nat_ip6)
+ self.assertEqual(packet[IPv6].dst, client.ip6)
+ self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
def nat64_get_ses_num(self):
"""
Return number of active NAT64 sessions.
self.logger.info(self.vapi.cli("show nat64 bib tcp"))
self.logger.info(self.vapi.cli("show nat64 bib udp"))
self.logger.info(self.vapi.cli("show nat64 bib icmp"))
+ self.logger.info(self.vapi.cli("show nat64 bib unknown"))
self.logger.info(self.vapi.cli("show nat64 session table tcp"))
self.logger.info(self.vapi.cli("show nat64 session table udp"))
self.logger.info(self.vapi.cli("show nat64 session table icmp"))
+ self.logger.info(self.vapi.cli("show nat64 session table unknown"))
self.clear_nat64()
if __name__ == '__main__':
Code Review / vpp.git / blobdiff