cls.pg0.generate_remote_hosts(3)
cls.pg0.configure_ipv4_neighbors()
+ cls.pg1.generate_remote_hosts(1)
+ cls.pg1.configure_ipv4_neighbors()
+
cls.overlapping_interfaces = list(list(cls.pg_interfaces[4:7]))
cls.vapi.ip_table_add_del(10, is_add=1)
cls.vapi.ip_table_add_del(20, is_add=1)
if self.pg7.has_ip4_config:
self.pg7.unconfig_ip4()
+ self.vapi.nat44_forwarding_enable_disable(0)
+
interfaces = self.vapi.nat44_interface_addr_dump()
for intf in interfaces:
self.vapi.nat44_add_interface_addr(intf.sw_if_index,
vrf_id=sm.vrf_id,
protocol=sm.protocol,
twice_nat=sm.twice_nat,
+ self_twice_nat=sm.self_twice_nat,
+ out2in_only=sm.out2in_only,
+ tag=sm.tag,
+ external_sw_if_index=sm.external_sw_if_index,
is_add=0)
lb_static_mappings = self.vapi.nat44_lb_static_mapping_dump()
lb_sm.protocol,
vrf_id=lb_sm.vrf_id,
twice_nat=lb_sm.twice_nat,
+ self_twice_nat=lb_sm.self_twice_nat,
+ out2in_only=lb_sm.out2in_only,
+ tag=lb_sm.tag,
is_add=0,
local_num=0,
locals=[])
def nat44_add_static_mapping(self, local_ip, external_ip='0.0.0.0',
local_port=0, external_port=0, vrf_id=0,
is_add=1, external_sw_if_index=0xFFFFFFFF,
- proto=0, twice_nat=0):
+ proto=0, twice_nat=0, self_twice_nat=0,
+ out2in_only=0, tag=""):
"""
Add/delete NAT44 static mapping
:param external_sw_if_index: External interface instead of IP address
:param proto: IP protocol (Mandatory if port specified)
:param twice_nat: 1 if translate external host address and port
+ :param self_twice_nat: 1 if translate external host address and port
+ whenever external host address equals
+ local address of internal host
+ :param out2in_only: if 1 rule is matching only out2in direction
+ :param tag: Opaque string tag
"""
addr_only = 1
if local_port and external_port:
vrf_id,
proto,
twice_nat,
+ self_twice_nat,
+ out2in_only,
+ tag,
is_add)
def nat44_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF, twice_nat=0):
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
+ sm = self.vapi.nat44_static_mapping_dump()
+ self.assertEqual(len(sm), 1)
+ self.assertEqual((sm[0].tag).split('\0', 1)[0], '')
+ self.assertEqual(sm[0].protocol, 0)
+ self.assertEqual(sm[0].local_port, 0)
+ self.assertEqual(sm[0].external_port, 0)
# in2out
pkts = self.create_stream_in(self.pg0, self.pg1)
self.tcp_port_out = 6303
self.udp_port_out = 6304
self.icmp_id_out = 6305
+ tag = "testTAG"
- self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+ self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip, tag=tag)
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
+ sm = self.vapi.nat44_static_mapping_dump()
+ self.assertEqual(len(sm), 1)
+ self.assertEqual((sm[0].tag).split('\0', 1)[0], tag)
# out2in
pkts = self.create_stream_out(self.pg1, nat_ip)
capture = self.pg1.get_capture(len(pkts))
self.verify_capture_out(capture)
+ def test_static_with_port_out2(self):
+ """ 1:1 NAPT symmetrical rule """
+
+ external_port = 80
+ local_port = 8080
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+ local_port, external_port,
+ proto=IP_PROTOS.tcp, out2in_only=1)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # from client to service
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=12345, dport=external_port))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ server = None
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg0.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # ICMP error
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ ICMP(type=11) / capture[0][IP])
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ self.assertEqual(p[IP].src, self.nat_addr)
+ inner = p[IPerror]
+ self.assertEqual(inner.dst, self.nat_addr)
+ self.assertEqual(inner[TCPerror].dport, external_port)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service back to client
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=local_port, dport=12345))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(tcp.sport, external_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # ICMP error
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ ICMP(type=11) / capture[0][IP])
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ self.assertEqual(p[IP].dst, self.pg0.remote_ip4)
+ inner = p[IPerror]
+ self.assertEqual(inner.src, self.pg0.remote_ip4)
+ self.assertEqual(inner[TCPerror].sport, local_port)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from client to server (no translation)
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) /
+ TCP(sport=12346, dport=local_port))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ server = None
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg0.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service back to client (no translation)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=local_port, dport=12346))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg0.remote_ip4)
+ self.assertEqual(tcp.sport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
def test_static_vrf_aware(self):
""" 1:1 NAT VRF awareness """
self.pg_start()
self.pg3.assert_nothing_captured()
+ def test_dynamic_to_static(self):
+ """ Switch from dynamic translation to 1:1NAT """
+ nat_ip = "10.0.0.10"
+ self.tcp_port_out = 6303
+ self.udp_port_out = 6304
+ self.icmp_id_out = 6305
+
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # dynamic
+ 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)
+
+ # 1:1NAT
+ self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4n, 0)
+ self.assertEqual(len(sessions), 0)
+ 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, nat_ip, True)
+
def test_identity_nat(self):
""" Identity NAT """
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
- # multiple clients
+ @unittest.skipUnless(running_extended_tests(), "part of extended tests")
+ def test_static_lb_multi_clients(self):
+ """ NAT44 local service load balancing - multiple clients"""
+
+ external_addr_n = socket.inet_pton(socket.AF_INET, self.nat_addr)
+ external_port = 80
+ local_port = 8080
+ server1 = self.pg0.remote_hosts[0]
+ server2 = self.pg0.remote_hosts[1]
+
+ locals = [{'addr': server1.ip4n,
+ 'port': local_port,
+ 'probability': 90},
+ {'addr': server2.ip4n,
+ 'port': local_port,
+ 'probability': 10}]
+
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_add_del_lb_static_mapping(external_addr_n,
+ external_port,
+ IP_PROTOS.tcp,
+ local_num=len(locals),
+ locals=locals)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
server1_n = 0
server2_n = 0
- clients = ip4_range(self.pg1.remote_ip4, 10, 20)
+ clients = ip4_range(self.pg1.remote_ip4, 10, 50)
pkts = []
for client in clients:
p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
server2_n += 1
self.assertTrue(server1_n > server2_n)
- def test_multiple_inside_interfaces(self):
- """ NAT44 multiple non-overlapping address space inside interfaces """
+ def test_static_lb_2(self):
+ """ NAT44 local service load balancing (asymmetrical rule) """
+ external_addr_n = socket.inet_pton(socket.AF_INET, self.nat_addr)
+ external_port = 80
+ local_port = 8080
+ server1 = self.pg0.remote_hosts[0]
+ server2 = self.pg0.remote_hosts[1]
- self.nat44_add_address(self.nat_addr)
+ locals = [{'addr': server1.ip4n,
+ 'port': local_port,
+ 'probability': 70},
+ {'addr': server2.ip4n,
+ 'port': local_port,
+ 'probability': 30}]
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.vapi.nat44_add_del_lb_static_mapping(external_addr_n,
+ external_port,
+ IP_PROTOS.tcp,
+ out2in_only=1,
+ local_num=len(locals),
+ locals=locals)
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
- self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index)
- self.vapi.nat44_interface_add_del_feature(self.pg3.sw_if_index,
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
- # between two NAT44 inside interfaces (no translation)
- pkts = self.create_stream_in(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
+ # from client to service
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=12345, dport=external_port))
+ self.pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_no_translation(capture, self.pg0, self.pg1)
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ server = None
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertIn(ip.dst, [server1.ip4, server2.ip4])
+ if ip.dst == server1.ip4:
+ server = server1
+ else:
+ server = server2
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
- # from NAT44 inside to interface without NAT44 feature (no translation)
- pkts = self.create_stream_in(self.pg0, self.pg2)
- self.pg0.add_stream(pkts)
+ # from service back to client
+ p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+ IP(src=server.ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=local_port, dport=12345))
+ self.pg0.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- self.verify_capture_no_translation(capture, self.pg0, self.pg2)
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(tcp.sport, external_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
- # in2out 1st interface
- pkts = self.create_stream_in(self.pg0, self.pg3)
- self.pg0.add_stream(pkts)
+ # from client to server (no translation)
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=server1.ip4) /
+ TCP(sport=12346, dport=local_port))
+ self.pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- capture = self.pg3.get_capture(len(pkts))
- self.verify_capture_out(capture)
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ server = None
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, server1.ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service back to client (no translation)
+ p = (Ether(src=server1.mac, dst=self.pg0.local_mac) /
+ IP(src=server1.ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=local_port, dport=12346))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, server1.ip4)
+ self.assertEqual(tcp.sport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ def test_multiple_inside_interfaces(self):
+ """ NAT44 multiple non-overlapping address space inside interfaces """
+
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg3.sw_if_index,
+ is_inside=0)
+
+ # between two NAT44 inside interfaces (no translation)
+ 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_no_translation(capture, self.pg0, self.pg1)
+
+ # from NAT44 inside to interface without NAT44 feature (no translation)
+ pkts = self.create_stream_in(self.pg0, self.pg2)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg2.get_capture(len(pkts))
+ self.verify_capture_no_translation(capture, self.pg0, self.pg2)
+
+ # in2out 1st interface
+ pkts = self.create_stream_in(self.pg0, self.pg3)
+ self.pg0.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)
# out2in 1st interface
pkts = self.create_stream_out(self.pg3)
self.assertEqual(tcp.dport, host_in_port)
self.check_tcp_checksum(p)
except:
- self.logger.error(ppp("Unexpected or invalid packet:"), p)
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
def test_hairpinning2(self):
def test_interface_addr_static_mapping(self):
""" Static mapping with addresses from interface """
+ tag = "testTAG"
+
self.vapi.nat44_add_interface_addr(self.pg7.sw_if_index)
self.nat44_add_static_mapping(
'1.2.3.4',
- external_sw_if_index=self.pg7.sw_if_index)
+ external_sw_if_index=self.pg7.sw_if_index,
+ tag=tag)
# static mappings with external interface
static_mappings = self.vapi.nat44_static_mapping_dump()
self.assertEqual(1, len(static_mappings))
self.assertEqual(self.pg7.sw_if_index,
static_mappings[0].external_sw_if_index)
+ self.assertEqual((static_mappings[0].tag).split('\0', 1)[0], tag)
# configure interface address and check static mappings
self.pg7.config_ip4()
static_mappings = self.vapi.nat44_static_mapping_dump()
- self.assertEqual(1, len(static_mappings))
- self.assertEqual(static_mappings[0].external_ip_address[0:4],
- self.pg7.local_ip4n)
- self.assertEqual(0xFFFFFFFF, static_mappings[0].external_sw_if_index)
+ self.assertEqual(2, len(static_mappings))
+ resolved = False
+ for sm in static_mappings:
+ if sm.external_sw_if_index == 0xFFFFFFFF:
+ self.assertEqual(sm.external_ip_address[0:4],
+ self.pg7.local_ip4n)
+ self.assertEqual((sm.tag).split('\0', 1)[0], tag)
+ resolved = True
+ self.assertTrue(resolved)
# remove interface address and check static mappings
self.pg7.unconfig_ip4()
static_mappings = self.vapi.nat44_static_mapping_dump()
+ self.assertEqual(1, len(static_mappings))
+ self.assertEqual(self.pg7.sw_if_index,
+ static_mappings[0].external_sw_if_index)
+ self.assertEqual((static_mappings[0].tag).split('\0', 1)[0], tag)
+
+ # configure interface address again and check static mappings
+ self.pg7.config_ip4()
+ static_mappings = self.vapi.nat44_static_mapping_dump()
+ self.assertEqual(2, len(static_mappings))
+ resolved = False
+ for sm in static_mappings:
+ if sm.external_sw_if_index == 0xFFFFFFFF:
+ self.assertEqual(sm.external_ip_address[0:4],
+ self.pg7.local_ip4n)
+ self.assertEqual((sm.tag).split('\0', 1)[0], tag)
+ resolved = True
+ self.assertTrue(resolved)
+
+ # remove static mapping
+ self.nat44_add_static_mapping(
+ '1.2.3.4',
+ external_sw_if_index=self.pg7.sw_if_index,
+ tag=tag,
+ is_add=0)
+ static_mappings = self.vapi.nat44_static_mapping_dump()
self.assertEqual(0, len(static_mappings))
def test_interface_addr_identity_nat(self):
# configure interface address and check identity mappings
self.pg7.config_ip4()
identity_mappings = self.vapi.nat44_identity_mapping_dump()
- self.assertEqual(1, len(identity_mappings))
- self.assertEqual(identity_mappings[0].ip_address,
- self.pg7.local_ip4n)
- self.assertEqual(0xFFFFFFFF, identity_mappings[0].sw_if_index)
- self.assertEqual(port, identity_mappings[0].port)
- self.assertEqual(IP_PROTOS.tcp, identity_mappings[0].protocol)
+ resolved = False
+ self.assertEqual(2, len(identity_mappings))
+ for sm in identity_mappings:
+ if sm.sw_if_index == 0xFFFFFFFF:
+ self.assertEqual(identity_mappings[0].ip_address,
+ self.pg7.local_ip4n)
+ self.assertEqual(port, identity_mappings[0].port)
+ self.assertEqual(IP_PROTOS.tcp, identity_mappings[0].protocol)
+ resolved = True
+ self.assertTrue(resolved)
# remove interface address and check identity mappings
self.pg7.unconfig_ip4()
identity_mappings = self.vapi.nat44_identity_mapping_dump()
- self.assertEqual(0, len(identity_mappings))
+ self.assertEqual(1, len(identity_mappings))
+ self.assertEqual(self.pg7.sw_if_index,
+ identity_mappings[0].sw_if_index)
def test_ipfix_nat44_sess(self):
""" IPFIX logging NAT44 session created/delted """
self.assertEqual(tcp.dport, host_in_port)
self.check_tcp_checksum(p)
except:
- self.logger.error(ppp("Unexpected or invalid packet:"), p)
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ def test_output_feature_and_service(self):
+ """ NAT44 interface output feature and services """
+ external_addr = '1.2.3.4'
+ external_port = 80
+ local_port = 8080
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(self.nat_addr)
+ self.nat44_add_static_mapping(self.pg0.remote_ip4, external_addr,
+ local_port, external_port,
+ proto=IP_PROTOS.tcp, out2in_only=1)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_output_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # from client to service
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=external_addr) /
+ TCP(sport=12345, dport=external_port))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ server = None
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg0.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service back to client
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=local_port, dport=12345))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, external_addr)
+ self.assertEqual(tcp.sport, external_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from local network host to external network
+ 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)
+ 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)
+
+ # from external network back to local network host
+ 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_and_service2(self):
+ """ NAT44 interface output feature and service host direct access """
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_output_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ # session initiaded from service host - translate
+ 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)
+
+ 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)
+
+ tcp_port_out = self.tcp_port_out
+ udp_port_out = self.udp_port_out
+ icmp_id_out = self.icmp_id_out
+
+ # session initiaded from remote host - do not translate
+ pkts = self.create_stream_out(self.pg1,
+ self.pg0.remote_ip4,
+ use_inside_ports=True)
+ 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)
+
+ 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, nat_ip=self.pg0.remote_ip4,
+ same_port=True)
+
+ def test_output_feature_and_service3(self):
+ """ NAT44 interface output feature and DST NAT """
+ external_addr = '1.2.3.4'
+ external_port = 80
+ local_port = 8080
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(self.nat_addr)
+ self.nat44_add_static_mapping(self.pg1.remote_ip4, external_addr,
+ local_port, external_port,
+ proto=IP_PROTOS.tcp, out2in_only=1)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_interface_add_del_output_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=external_addr) /
+ TCP(sport=12345, dport=external_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg0.remote_ip4)
+ self.assertEqual(tcp.sport, 12345)
+ self.assertEqual(ip.dst, self.pg1.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) /
+ TCP(sport=local_port, dport=12345))
+ self.pg1.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, external_addr)
+ self.assertEqual(tcp.sport, external_port)
+ self.assertEqual(ip.dst, self.pg0.remote_ip4)
+ self.assertEqual(tcp.dport, 12345)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
def test_one_armed_nat44(self):
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
+ def test_one_armed_nat44_static(self):
+ """ One armed NAT44 and 1:1 NAPT symmetrical rule """
+ remote_host = self.pg9.remote_hosts[0]
+ local_host = self.pg9.remote_hosts[1]
+ external_port = 80
+ local_port = 8080
+ eh_port_in = 0
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(self.nat_addr, twice_nat=1)
+ self.nat44_add_static_mapping(local_host.ip4, self.nat_addr,
+ local_port, external_port,
+ proto=IP_PROTOS.tcp, out2in_only=1,
+ twice_nat=1)
+ self.vapi.nat44_interface_add_del_feature(self.pg9.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg9.sw_if_index,
+ is_inside=0)
+
+ # from client to service
+ p = (Ether(src=self.pg9.remote_mac, dst=self.pg9.local_mac) /
+ IP(src=remote_host.ip4, dst=self.nat_addr) /
+ TCP(sport=12345, dport=external_port))
+ self.pg9.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg9.get_capture(1)
+ p = capture[0]
+ server = None
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, local_host.ip4)
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(tcp.dport, local_port)
+ self.assertNotEqual(tcp.sport, 12345)
+ eh_port_in = tcp.sport
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service back to client
+ p = (Ether(src=self.pg9.remote_mac, dst=self.pg9.local_mac) /
+ IP(src=local_host.ip4, dst=self.nat_addr) /
+ TCP(sport=local_port, dport=eh_port_in))
+ self.pg9.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg9.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(ip.dst, remote_host.ip4)
+ self.assertEqual(tcp.sport, external_port)
+ self.assertEqual(tcp.dport, 12345)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
def test_del_session(self):
""" Delete NAT44 session """
self.nat44_add_address(self.nat_addr)
self.nat_addr,
20,
self.tcp_port_out,
- data)
- pkts.reverse()
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.pg1.remote_ip4,
- self.pg0.remote_ip4)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
-
- def test_port_restricted(self):
- """ Port restricted NAT44 (MAP-E CE) """
- self.nat44_add_address(self.nat_addr)
- self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
- self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
- is_inside=0)
- self.vapi.cli("nat addr-port-assignment-alg map-e psid 10 "
- "psid-offset 6 psid-len 6")
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=4567, dport=22))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(ip.src, self.nat_addr)
- self.assertEqual(tcp.dport, 22)
- self.assertNotEqual(tcp.sport, 4567)
- self.assertEqual((tcp.sport >> 6) & 63, 10)
- self.check_tcp_checksum(p)
- self.check_ip_checksum(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- def test_twice_nat(self):
- """ Twice NAT44 """
- twice_nat_addr = '10.0.1.3'
- port_in = 8080
- port_out = 80
- eh_port_out = 4567
- eh_port_in = 0
- self.nat44_add_address(self.nat_addr)
- self.nat44_add_address(twice_nat_addr, twice_nat=1)
- self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
- port_in, port_out, proto=IP_PROTOS.tcp,
- twice_nat=1)
- self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
- self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
- is_inside=0)
-
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=eh_port_out, dport=port_out))
- self.pg1.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.dst, self.pg0.remote_ip4)
- self.assertEqual(ip.src, twice_nat_addr)
- self.assertEqual(tcp.dport, port_in)
- self.assertNotEqual(tcp.sport, eh_port_out)
- eh_port_in = tcp.sport
- self.check_tcp_checksum(p)
- self.check_ip_checksum(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
+ data)
+ pkts.reverse()
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ frags = self.pg0.get_capture(len(pkts))
+ p = self.reass_frags_and_verify(frags,
+ self.pg1.remote_ip4,
+ self.pg0.remote_ip4)
+ self.assertEqual(p[TCP].sport, 20)
+ self.assertEqual(p[TCP].dport, self.tcp_port_in)
+ self.assertEqual(data, p[Raw].load)
+
+ def test_port_restricted(self):
+ """ Port restricted NAT44 (MAP-E CE) """
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.cli("nat addr-port-assignment-alg map-e psid 10 "
+ "psid-offset 6 psid-len 6")
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
- TCP(sport=port_in, dport=eh_port_in))
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=4567, dport=22))
self.pg0.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
tcp = p[TCP]
self.assertEqual(ip.dst, self.pg1.remote_ip4)
self.assertEqual(ip.src, self.nat_addr)
- self.assertEqual(tcp.dport, eh_port_out)
- self.assertEqual(tcp.sport, port_out)
+ self.assertEqual(tcp.dport, 22)
+ self.assertNotEqual(tcp.sport, 4567)
+ self.assertEqual((tcp.sport >> 6) & 63, 10)
self.check_tcp_checksum(p)
self.check_ip_checksum(p)
except:
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
- def test_twice_nat_lb(self):
- """ Twice NAT44 local service load balancing """
- external_addr_n = socket.inet_pton(socket.AF_INET, self.nat_addr)
+ def twice_nat_common(self, self_twice_nat=False, same_pg=False, lb=False,
+ client_id=None):
twice_nat_addr = '10.0.1.3'
- local_port = 8080
- external_port = 80
+
+ port_in = 8080
+ if lb:
+ if not same_pg:
+ port_in1 = port_in
+ port_in2 = port_in
+ else:
+ port_in1 = port_in+1
+ port_in2 = port_in+2
+
+ port_out = 80
eh_port_out = 4567
- eh_port_in = 0
+
server1 = self.pg0.remote_hosts[0]
server2 = self.pg0.remote_hosts[1]
+ if lb and same_pg:
+ server2 = server1
+ if not lb:
+ server = server1
+
+ pg0 = self.pg0
+ if same_pg:
+ pg1 = self.pg0
+ else:
+ pg1 = self.pg1
- locals = [{'addr': server1.ip4n,
- 'port': local_port,
- 'probability': 50},
- {'addr': server2.ip4n,
- 'port': local_port,
- 'probability': 50}]
+ eh_translate = ((not self_twice_nat) or (not lb and same_pg) or
+ client_id == 1)
self.nat44_add_address(self.nat_addr)
self.nat44_add_address(twice_nat_addr, twice_nat=1)
-
- self.vapi.nat44_add_del_lb_static_mapping(external_addr_n,
- external_port,
- IP_PROTOS.tcp,
- twice_nat=1,
- local_num=len(locals),
- locals=locals)
- self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
- self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ if not lb:
+ self.nat44_add_static_mapping(pg0.remote_ip4, self.nat_addr,
+ port_in, port_out,
+ proto=IP_PROTOS.tcp,
+ twice_nat=int(not self_twice_nat),
+ self_twice_nat=int(self_twice_nat))
+ else:
+ locals = [{'addr': server1.ip4n,
+ 'port': port_in1,
+ 'probability': 50},
+ {'addr': server2.ip4n,
+ 'port': port_in2,
+ 'probability': 50}]
+ out_addr_n = socket.inet_pton(socket.AF_INET, self.nat_addr)
+ self.vapi.nat44_add_del_lb_static_mapping(out_addr_n,
+ port_out,
+ IP_PROTOS.tcp,
+ twice_nat=int(
+ not self_twice_nat),
+ self_twice_nat=int(
+ self_twice_nat),
+ local_num=len(locals),
+ locals=locals)
+ self.vapi.nat44_interface_add_del_feature(pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(pg1.sw_if_index,
is_inside=0)
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=eh_port_out, dport=external_port))
- self.pg1.add_stream(p)
+ if same_pg:
+ if not lb:
+ client = server
+ else:
+ assert client_id is not None
+ if client_id == 1:
+ client = self.pg0.remote_hosts[0]
+ elif client_id == 2:
+ client = self.pg0.remote_hosts[1]
+ else:
+ client = pg1.remote_hosts[0]
+ p = (Ether(src=pg1.remote_mac, dst=pg1.local_mac) /
+ IP(src=client.ip4, dst=self.nat_addr) /
+ TCP(sport=eh_port_out, dport=port_out))
+ pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- capture = self.pg0.get_capture(1)
+ capture = pg0.get_capture(1)
p = capture[0]
- server = None
try:
ip = p[IP]
tcp = p[TCP]
- self.assertEqual(ip.src, twice_nat_addr)
- self.assertIn(ip.dst, [server1.ip4, server2.ip4])
- if ip.dst == server1.ip4:
- server = server1
+ if lb:
+ if ip.dst == server1.ip4:
+ server = server1
+ port_in = port_in1
+ else:
+ server = server2
+ port_in = port_in2
+ self.assertEqual(ip.dst, server.ip4)
+ if lb and same_pg:
+ self.assertIn(tcp.dport, [port_in1, port_in2])
else:
- server = server2
- self.assertNotEqual(tcp.sport, eh_port_out)
+ self.assertEqual(tcp.dport, port_in)
+ if eh_translate:
+ self.assertEqual(ip.src, twice_nat_addr)
+ self.assertNotEqual(tcp.sport, eh_port_out)
+ else:
+ self.assertEqual(ip.src, client.ip4)
+ self.assertEqual(tcp.sport, eh_port_out)
+ eh_addr_in = ip.src
eh_port_in = tcp.sport
- self.assertEqual(tcp.dport, local_port)
+ saved_port_in = tcp.dport
self.check_tcp_checksum(p)
self.check_ip_checksum(p)
except:
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
- p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
- IP(src=server.ip4, dst=twice_nat_addr) /
- TCP(sport=local_port, dport=eh_port_in))
- self.pg0.add_stream(p)
+ p = (Ether(src=server.mac, dst=pg0.local_mac) /
+ IP(src=server.ip4, dst=eh_addr_in) /
+ TCP(sport=saved_port_in, dport=eh_port_in))
+ pg0.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- capture = self.pg1.get_capture(1)
+ capture = pg1.get_capture(1)
p = capture[0]
try:
ip = p[IP]
tcp = p[TCP]
+ self.assertEqual(ip.dst, client.ip4)
self.assertEqual(ip.src, self.nat_addr)
- self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(tcp.sport, external_port)
self.assertEqual(tcp.dport, eh_port_out)
+ self.assertEqual(tcp.sport, port_out)
self.check_tcp_checksum(p)
self.check_ip_checksum(p)
except:
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
+ def test_twice_nat(self):
+ """ Twice NAT44 """
+ self.twice_nat_common()
+
+ def test_self_twice_nat_positive(self):
+ """ Self Twice NAT44 (positive test) """
+ self.twice_nat_common(self_twice_nat=True, same_pg=True)
+
+ def test_self_twice_nat_negative(self):
+ """ Self Twice NAT44 (negative test) """
+ self.twice_nat_common(self_twice_nat=True)
+
+ def test_twice_nat_lb(self):
+ """ Twice NAT44 local service load balancing """
+ self.twice_nat_common(lb=True)
+
+ def test_self_twice_nat_lb_positive(self):
+ """ Self Twice NAT44 local service load balancing (positive test) """
+ self.twice_nat_common(lb=True, self_twice_nat=True, same_pg=True,
+ client_id=1)
+
+ def test_self_twice_nat_lb_negative(self):
+ """ Self Twice NAT44 local service load balancing (negative test) """
+ self.twice_nat_common(lb=True, self_twice_nat=True, same_pg=True,
+ client_id=2)
+
def test_twice_nat_interface_addr(self):
""" Acquire twice NAT44 addresses from interface """
self.vapi.nat44_add_interface_addr(self.pg7.sw_if_index, twice_nat=1)
def tearDown(self):
super(TestNAT44, self).tearDown()
if not self.vpp_dead:
- self.logger.info(self.vapi.cli("show nat44 verbose"))
+ self.logger.info(self.vapi.cli("show nat44 addresses"))
+ self.logger.info(self.vapi.cli("show nat44 interfaces"))
+ self.logger.info(self.vapi.cli("show nat44 static mappings"))
+ self.logger.info(self.vapi.cli("show nat44 interface address"))
+ self.logger.info(self.vapi.cli("show nat44 sessions detail"))
self.logger.info(self.vapi.cli("show nat virtual-reassembly"))
self.vapi.cli("nat addr-port-assignment-alg default")
self.clear_nat44()
def tearDown(self):
super(TestDeterministicNAT, self).tearDown()
if not self.vpp_dead:
- self.logger.info(self.vapi.cli("show nat44 detail"))
+ self.logger.info(self.vapi.cli("show nat44 interfaces"))
+ self.logger.info(
+ self.vapi.cli("show nat44 deterministic mappings"))
+ self.logger.info(
+ self.vapi.cli("show nat44 deterministic timeouts"))
+ self.logger.info(
+ self.vapi.cli("show nat44 deterministic sessions"))
self.clear_nat_det()
self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
self.logger.info(self.vapi.cli("show dslite sessions"))
+
+class TestDSliteCE(MethodHolder):
+ """ DS-Lite CE Test Cases """
+
+ @classmethod
+ def setUpConstants(cls):
+ super(TestDSliteCE, cls).setUpConstants()
+ cls.vpp_cmdline.extend(["nat", "{", "dslite ce", "}"])
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestDSliteCE, cls).setUpClass()
+
+ try:
+ 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.generate_remote_hosts(1)
+ cls.pg1.configure_ipv6_neighbors()
+
+ except Exception:
+ super(TestDSliteCE, cls).tearDownClass()
+ raise
+
+ def test_dslite_ce(self):
+ """ Test DS-Lite CE """
+
+ b4_ip4 = '192.0.0.2'
+ b4_ip4_n = socket.inet_pton(socket.AF_INET, b4_ip4)
+ b4_ip6 = '2001:db8:62aa::375e:f4c1:1'
+ b4_ip6_n = socket.inet_pton(socket.AF_INET6, b4_ip6)
+ self.vapi.dslite_set_b4_addr(b4_ip6_n, b4_ip4_n)
+
+ aftr_ip4 = '192.0.0.1'
+ aftr_ip4_n = socket.inet_pton(socket.AF_INET, aftr_ip4)
+ aftr_ip6 = '2001:db8:85a3::8a2e:370:1'
+ aftr_ip6_n = socket.inet_pton(socket.AF_INET6, aftr_ip6)
+ self.vapi.dslite_set_aftr_addr(aftr_ip6_n, aftr_ip4_n)
+
+ self.vapi.ip_add_del_route(dst_address=aftr_ip6_n,
+ dst_address_length=128,
+ next_hop_address=self.pg1.remote_ip6n,
+ next_hop_sw_if_index=self.pg1.sw_if_index,
+ is_ipv6=1)
+
+ # UDP encapsulation
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(dst=self.pg1.remote_ip4, src=self.pg0.remote_ip4) /
+ UDP(sport=10000, dport=20000))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ capture = capture[0]
+ self.assertEqual(capture[IPv6].src, b4_ip6)
+ self.assertEqual(capture[IPv6].dst, aftr_ip6)
+ self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
+ self.assertEqual(capture[IP].dst, self.pg1.remote_ip4)
+ self.assertEqual(capture[UDP].sport, 10000)
+ self.assertEqual(capture[UDP].dport, 20000)
+ self.check_ip_checksum(capture)
+
+ # UDP decapsulation
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(dst=b4_ip6, src=aftr_ip6) /
+ IP(dst=self.pg0.remote_ip4, src=self.pg1.remote_ip4) /
+ UDP(sport=20000, dport=10000))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ capture = capture[0]
+ self.assertFalse(capture.haslayer(IPv6))
+ self.assertEqual(capture[IP].src, self.pg1.remote_ip4)
+ self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
+ self.assertEqual(capture[UDP].sport, 20000)
+ self.assertEqual(capture[UDP].dport, 10000)
+ self.check_ip_checksum(capture)
+
+ # ping DS-Lite B4 tunnel endpoint address
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(src=self.pg1.remote_hosts[0].ip6, dst=b4_ip6) /
+ ICMPv6EchoRequest())
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ self.assertEqual(1, len(capture))
+ capture = capture[0]
+ self.assertEqual(capture[IPv6].src, b4_ip6)
+ self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[0].ip6)
+ self.assertTrue(capture.haslayer(ICMPv6EchoReply))
+
+ def tearDown(self):
+ super(TestDSliteCE, self).tearDown()
+ if not self.vpp_dead:
+ self.logger.info(
+ self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
+ self.logger.info(
+ self.vapi.cli("show dslite b4-tunnel-endpoint-address"))
+
+
+class TestNAT66(MethodHolder):
+ """ NAT66 Test Cases """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestNAT66, cls).setUpClass()
+
+ try:
+ cls.nat_addr = 'fd01:ff::2'
+ cls.nat_addr_n = socket.inet_pton(socket.AF_INET6, cls.nat_addr)
+
+ cls.create_pg_interfaces(range(2))
+ cls.interfaces = list(cls.pg_interfaces)
+
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.configure_ipv6_neighbors()
+
+ except Exception:
+ super(TestNAT66, cls).tearDownClass()
+ raise
+
+ def test_static(self):
+ """ 1:1 NAT66 test """
+ self.vapi.nat66_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat66_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+ self.vapi.nat66_add_del_static_mapping(self.pg0.remote_ip6n,
+ self.nat_addr_n)
+
+ # in2out
+ pkts = []
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+ TCP())
+ pkts.append(p)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+ UDP())
+ pkts.append(p)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+ ICMPv6EchoRequest())
+ pkts.append(p)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+ GRE() / IP() / TCP())
+ pkts.append(p)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, self.nat_addr)
+ self.assertEqual(packet[IPv6].dst, self.pg1.remote_ip6)
+ if packet.haslayer(TCP):
+ self.check_tcp_checksum(packet)
+ elif packet.haslayer(UDP):
+ self.check_udp_checksum(packet)
+ elif packet.haslayer(ICMPv6EchoRequest):
+ self.check_icmpv6_checksum(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # out2in
+ pkts = []
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+ TCP())
+ pkts.append(p)
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+ UDP())
+ pkts.append(p)
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+ ICMPv6EchoReply())
+ pkts.append(p)
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
+ GRE() / IP() / TCP())
+ pkts.append(p)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, self.pg1.remote_ip6)
+ self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
+ if packet.haslayer(TCP):
+ self.check_tcp_checksum(packet)
+ elif packet.haslayer(UDP):
+ self.check_udp_checksum(packet)
+ elif packet.haslayer(ICMPv6EchoReply):
+ self.check_icmpv6_checksum(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ sm = self.vapi.nat66_static_mapping_dump()
+ self.assertEqual(len(sm), 1)
+ self.assertEqual(sm[0].total_pkts, 8)
+
+ def test_check_no_translate(self):
+ """ NAT66 translate only when egress interface is outside interface """
+ self.vapi.nat66_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat66_add_del_interface(self.pg1.sw_if_index)
+ self.vapi.nat66_add_del_static_mapping(self.pg0.remote_ip6n,
+ self.nat_addr_n)
+
+ # in2out
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+ UDP())
+ self.pg0.add_stream([p])
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ packet = capture[0]
+ try:
+ self.assertEqual(packet[IPv6].src, self.pg0.remote_ip6)
+ self.assertEqual(packet[IPv6].dst, self.pg1.remote_ip6)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def clear_nat66(self):
+ """
+ Clear NAT66 configuration.
+ """
+ interfaces = self.vapi.nat66_interface_dump()
+ for intf in interfaces:
+ self.vapi.nat66_add_del_interface(intf.sw_if_index,
+ intf.is_inside,
+ is_add=0)
+
+ static_mappings = self.vapi.nat66_static_mapping_dump()
+ for sm in static_mappings:
+ self.vapi.nat66_add_del_static_mapping(sm.local_ip_address,
+ sm.external_ip_address,
+ sm.vrf_id,
+ is_add=0)
+
+ def tearDown(self):
+ super(TestNAT66, self).tearDown()
+ if not self.vpp_dead:
+ self.logger.info(self.vapi.cli("show nat66 interfaces"))
+ self.logger.info(self.vapi.cli("show nat66 static mappings"))
+ self.clear_nat66()
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff