fields_desc = [ByteEnumField("event_type", None,
{1: "add", 2: "del", 3: "refresh"}),
ByteEnumField("protocol", None,
- {0: "udp", 1: "tcp", 2: "icmp"}),
+ {0: "other", 1: "udp", 2: "tcp", 3: "icmp"}),
ShortField("flags", 0),
IPField("in_addr", None),
IPField("out_addr", None),
def config_flags(self):
return VppEnum.vl_api_nat_config_flags_t
+ @property
+ def nat44_config_flags(self):
+ return VppEnum.vl_api_nat44_config_flags_t
+
@property
def SYSLOG_SEVERITY(self):
return VppEnum.vl_api_syslog_severity_t
- def clear_nat44(self):
- """
- Clear NAT44 configuration.
- """
- if hasattr(self, 'pg7') and hasattr(self, 'pg8'):
- if self.pg7.has_ip4_config:
- self.pg7.unconfig_ip4()
-
- self.vapi.nat44_forwarding_enable_disable(enable=0)
-
- interfaces = self.vapi.nat44_interface_addr_dump()
- for intf in interfaces:
- self.vapi.nat44_add_del_interface_addr(
- is_add=0,
- sw_if_index=intf.sw_if_index,
- flags=intf.flags)
-
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=0)
- self.ipfix_src_port = 4739
- self.ipfix_domain_id = 1
-
- self.vapi.syslog_set_filter(
- self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_EMERG)
-
- self.vapi.nat_ha_set_listener(ip_address='0.0.0.0', port=0,
- path_mtu=512)
- self.vapi.nat_ha_set_failover(ip_address='0.0.0.0', port=0,
- session_refresh_interval=10)
-
- interfaces = self.vapi.nat44_interface_dump()
- for intf in interfaces:
- if intf.flags & self.config_flags.NAT_IS_INSIDE and \
- intf.flags & self.config_flags.NAT_IS_OUTSIDE:
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=intf.sw_if_index)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=intf.sw_if_index,
- flags=intf.flags)
-
- interfaces = self.vapi.nat44_interface_output_feature_dump()
- for intf in interfaces:
- self.vapi.nat44_interface_add_del_output_feature(
- is_add=0,
- flags=intf.flags,
- sw_if_index=intf.sw_if_index)
- static_mappings = self.vapi.nat44_static_mapping_dump()
- for sm in static_mappings:
- self.vapi.nat44_add_del_static_mapping(
- is_add=0,
- local_ip_address=sm.local_ip_address,
- external_ip_address=sm.external_ip_address,
- external_sw_if_index=sm.external_sw_if_index,
- local_port=sm.local_port,
- external_port=sm.external_port,
- vrf_id=sm.vrf_id,
- protocol=sm.protocol,
- flags=sm.flags, tag=sm.tag)
-
- lb_static_mappings = self.vapi.nat44_lb_static_mapping_dump()
- for lb_sm in lb_static_mappings:
- self.vapi.nat44_add_del_lb_static_mapping(
- is_add=0,
- flags=lb_sm.flags,
- external_addr=lb_sm.external_addr,
- external_port=lb_sm.external_port,
- protocol=lb_sm.protocol,
- local_num=0, locals=[],
- tag=lb_sm.tag)
-
- identity_mappings = self.vapi.nat44_identity_mapping_dump()
- for id_m in identity_mappings:
- self.vapi.nat44_add_del_identity_mapping(
- ip_address=id_m.ip_address,
- sw_if_index=id_m.sw_if_index,
- port=id_m.port,
- flags=id_m.flags,
- vrf_id=id_m.vrf_id,
- protocol=id_m.protocol)
-
- addresses = self.vapi.nat44_address_dump()
- for addr in addresses:
- self.vapi.nat44_add_del_address_range(
- first_ip_address=addr.ip_address,
- last_ip_address=addr.ip_address,
- vrf_id=0xFFFFFFFF, flags=addr.flags)
-
- self.verify_no_nat44_user()
- self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
- tcp_transitory=240, icmp=60)
- self.vapi.nat_set_addr_and_port_alloc_alg()
- self.vapi.nat_set_mss_clamping(enable=0, mss_value=1500)
-
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,
ip4_n[3] = ip6_n[15]
return socket.inet_ntop(socket.AF_INET, ''.join(ip4_n))
- def create_stream_in_ip6(self, in_if, out_if, hlim=64, pref=None, plen=0):
- """
- Create IPv6 packet stream for inside network
-
- :param in_if: Inside interface
- :param out_if: Outside interface
- :param ttl: Hop Limit of generated packets
- :param pref: NAT64 prefix
- :param plen: NAT64 prefix length
- """
- pkts = []
- if pref is None:
- dst = ''.join(['64:ff9b::', out_if.remote_ip4])
- else:
- dst = self.compose_ip6(out_if.remote_ip4, pref, plen)
-
- # TCP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- TCP(sport=self.tcp_port_in, dport=20))
- pkts.append(p)
-
- # UDP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- UDP(sport=self.udp_port_in, dport=20))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- ICMPv6EchoRequest(id=self.icmp_id_in))
- pkts.append(p)
-
- return pkts
-
def create_stream_out(self, out_if, dst_ip=None, ttl=64,
use_inside_ports=False):
"""
return pkts
def verify_capture_out(self, capture, nat_ip=None, same_port=False,
- dst_ip=None, is_ip6=False):
+ dst_ip=None, is_ip6=False, ignore_port=False):
"""
Verify captured packets on outside network
if dst_ip is not None:
self.assertEqual(packet[IP46].dst, dst_ip)
if packet.haslayer(TCP):
- if same_port:
- self.assertEqual(packet[TCP].sport, self.tcp_port_in)
- else:
- self.assertNotEqual(
- packet[TCP].sport, self.tcp_port_in)
+ if not ignore_port:
+ if same_port:
+ self.assertEqual(
+ packet[TCP].sport, self.tcp_port_in)
+ else:
+ self.assertNotEqual(
+ packet[TCP].sport, self.tcp_port_in)
self.tcp_port_out = packet[TCP].sport
self.assert_packet_checksums_valid(packet)
elif packet.haslayer(UDP):
- if same_port:
- self.assertEqual(packet[UDP].sport, self.udp_port_in)
- else:
- self.assertNotEqual(
- packet[UDP].sport, self.udp_port_in)
+ if not ignore_port:
+ if same_port:
+ self.assertEqual(
+ packet[UDP].sport, self.udp_port_in)
+ else:
+ self.assertNotEqual(
+ packet[UDP].sport, self.udp_port_in)
self.udp_port_out = packet[UDP].sport
else:
- if same_port:
- self.assertEqual(packet[ICMP46].id, self.icmp_id_in)
- else:
- self.assertNotEqual(packet[ICMP46].id, self.icmp_id_in)
+ if not ignore_port:
+ if same_port:
+ self.assertEqual(
+ packet[ICMP46].id, self.icmp_id_in)
+ else:
+ self.assertNotEqual(
+ packet[ICMP46].id, self.icmp_id_in)
self.icmp_id_out = packet[ICMP46].id
self.assert_packet_checksums_valid(packet)
except:
pkts.append(p)
return pkts
- def create_stream_frag_ip6(self, src_if, dst, sport, dport, data,
- pref=None, plen=0, frag_size=128):
- """
- Create fragmented packet stream
-
- :param src_if: Source interface
- :param dst: Destination IPv4 address
- :param sport: Source TCP port
- :param dport: Destination TCP port
- :param data: Payload data
- :param pref: NAT64 prefix
- :param plen: NAT64 prefix length
- :param fragsize: size of fragments
- :returns: Fragments
- """
- if pref is None:
- dst_ip6 = ''.join(['64:ff9b::', dst])
- else:
- dst_ip6 = self.compose_ip6(dst, pref, plen)
-
- p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
- IPv6(src=src_if.remote_ip6, dst=dst_ip6) /
- IPv6ExtHdrFragment(id=random.randint(0, 65535)) /
- TCP(sport=sport, dport=dport) /
- Raw(data))
-
- return fragment6(p, frag_size)
-
def reass_frags_and_verify(self, frags, src, dst):
"""
Reassemble and verify fragmented packet
# maxBIBEntries
self.assertEqual(struct.pack("I", limit), record[472])
- def verify_ipfix_bib(self, data, is_create, src_addr):
- """
- Verify IPFIX NAT64 BIB create and delete events
-
- :param data: Decoded IPFIX data records
- :param is_create: Create event if nonzero value otherwise delete event
- :param src_addr: IPv6 source address
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- if is_create:
- self.assertEqual(scapy.compat.orb(record[230]), 10)
- else:
- self.assertEqual(scapy.compat.orb(record[230]), 11)
- # sourceIPv6Address
- self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
- # postNATSourceIPv4Address
- self.assertEqual(self.nat_addr_n, record[225])
- # protocolIdentifier
- self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
- # ingressVRFID
- self.assertEqual(struct.pack("!I", 0), record[234])
- # sourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
- # postNAPTSourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
-
- def verify_ipfix_nat64_ses(self, data, is_create, src_addr, dst_addr,
- dst_port):
- """
- Verify IPFIX NAT64 session create and delete events
-
- :param data: Decoded IPFIX data records
- :param is_create: Create event if nonzero value otherwise delete event
- :param src_addr: IPv6 source address
- :param dst_addr: IPv4 destination address
- :param dst_port: destination TCP port
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- if is_create:
- self.assertEqual(scapy.compat.orb(record[230]), 6)
- else:
- self.assertEqual(scapy.compat.orb(record[230]), 7)
- # sourceIPv6Address
- self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
- # destinationIPv6Address
- self.assertEqual(socket.inet_pton(socket.AF_INET6,
- self.compose_ip6(dst_addr,
- '64:ff9b::',
- 96)),
- record[28])
- # postNATSourceIPv4Address
- self.assertEqual(self.nat_addr_n, record[225])
- # postNATDestinationIPv4Address
- self.assertEqual(socket.inet_pton(socket.AF_INET, dst_addr),
- record[226])
- # protocolIdentifier
- self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
- # ingressVRFID
- self.assertEqual(struct.pack("!I", 0), record[234])
- # sourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
- # postNAPTSourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
- # destinationTransportPort
- self.assertEqual(struct.pack("!H", dst_port), record[11])
- # postNAPTDestinationTransportPort
- self.assertEqual(struct.pack("!H", dst_port), record[228])
-
def verify_no_nat44_user(self):
""" Verify that there is no NAT44 user """
users = self.vapi.nat44_user_dump()
else:
raise Exception("Unsupported protocol")
- def frag_in_order(self, proto=IP_PROTOS.tcp, dont_translate=False):
+ def frag_in_order(self, proto=IP_PROTOS.tcp, dont_translate=False,
+ ignore_port=False):
layer = self.proto2layer(proto)
if proto == IP_PROTOS.tcp:
if proto != IP_PROTOS.icmp:
if not dont_translate:
self.assertEqual(p[layer].dport, 20)
- self.assertNotEqual(p[layer].sport, self.port_in)
+ if not ignore_port:
+ self.assertNotEqual(p[layer].sport, self.port_in)
else:
self.assertEqual(p[layer].sport, self.port_in)
else:
- if not dont_translate:
- self.assertNotEqual(p[layer].id, self.port_in)
- else:
- self.assertEqual(p[layer].id, self.port_in)
+ if not ignore_port:
+ if not dont_translate:
+ self.assertNotEqual(p[layer].id, self.port_in)
+ else:
+ self.assertEqual(p[layer].id, self.port_in)
self.assertEqual(data, p[Raw].load)
# out2in
self.assertEqual(p[layer].id, self.port_in)
self.assertEqual(data, p[Raw].load)
- def reass_hairpinning(self, proto=IP_PROTOS.tcp):
+ def reass_hairpinning(self, proto=IP_PROTOS.tcp, ignore_port=False):
layer = self.proto2layer(proto)
if proto == IP_PROTOS.tcp:
self.nat_addr,
self.server.ip4)
if proto != IP_PROTOS.icmp:
- self.assertNotEqual(p[layer].sport, self.host_in_port)
+ if not ignore_port:
+ self.assertNotEqual(p[layer].sport, self.host_in_port)
self.assertEqual(p[layer].dport, self.server_in_port)
else:
- self.assertNotEqual(p[layer].id, self.host_in_port)
+ if not ignore_port:
+ self.assertNotEqual(p[layer].id, self.host_in_port)
self.assertEqual(data, p[Raw].load)
- def frag_out_of_order(self, proto=IP_PROTOS.tcp, dont_translate=False):
+ def frag_out_of_order(self, proto=IP_PROTOS.tcp, dont_translate=False,
+ ignore_port=False):
layer = self.proto2layer(proto)
if proto == IP_PROTOS.tcp:
if proto != IP_PROTOS.icmp:
if not dont_translate:
self.assertEqual(p[layer].dport, 20)
- self.assertNotEqual(p[layer].sport, self.port_in)
+ if not ignore_port:
+ self.assertNotEqual(p[layer].sport, self.port_in)
else:
self.assertEqual(p[layer].sport, self.port_in)
else:
- if not dont_translate:
- self.assertNotEqual(p[layer].id, self.port_in)
- else:
- self.assertEqual(p[layer].id, self.port_in)
+ if not ignore_port:
+ if not dont_translate:
+ self.assertNotEqual(p[layer].id, self.port_in)
+ else:
+ self.assertEqual(p[layer].id, self.port_in)
self.assertEqual(data, p[Raw].load)
# out2in
self.assertEqual(data, p[Raw].load)
+class TestNATMisc(MethodHolder):
+ """ NAT misc Test Cases """
+
+ max_translations = 10240
+ max_users = 10240
+
+ def setUp(self):
+ super(TestNATMisc, self).setUp()
+ self.vapi.nat44_plugin_enable_disable(
+ sessions=self.max_translations,
+ users=self.max_users, enable=1)
+
+ def tearDown(self):
+ super(TestNATMisc, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.nat44_plugin_enable_disable(enable=0)
+ self.vapi.cli("clear logging")
+
+ def test_show_config(self):
+ """ NAT config translation memory """
+
+ nat_config = self.vapi.nat_show_config()
+ mem = nat_config.translation_memory_size
+ self.assertTrue(mem > 0)
+ self.logger.info("max translation memory: %d" % mem)
+
+ def test_show_config_2(self):
+ """ NAT config2 translation memory """
+
+ nat_config = self.vapi.nat_show_config_2()
+ mem = nat_config.translation_memory_size
+ self.assertTrue(mem > 0)
+ self.logger.info("max translation memory: %d" % mem)
+
+ def test_show_max_translations(self):
+ """ API test - max translations per thread """
+ nat_config = self.vapi.nat_show_config_2()
+ self.assertEqual(self.max_translations,
+ nat_config.max_translations_per_thread)
+
+
class TestNAT44(MethodHolder):
""" NAT44 Test Cases """
+ max_translations = 10240
+ max_users = 10240
+
@classmethod
def setUpClass(cls):
super(TestNAT44, cls).setUpClass()
cls.pg4._remote_ip4 = cls.pg9._remote_hosts[0]._ip4 = "10.0.0.2"
cls.pg9.resolve_arp()
+ def setUp(self):
+ super(TestNAT44, self).setUp()
+ self.vapi.nat44_plugin_enable_disable(
+ sessions=self.max_translations,
+ users=self.max_users, enable=1)
+
@classmethod
def tearDownClass(cls):
super(TestNAT44, cls).tearDownClass()
+ def tearDown(self):
+ super(TestNAT44, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port,
+ enable=0)
+ self.ipfix_src_port = 4739
+ self.ipfix_domain_id = 1
+
+ self.vapi.nat44_plugin_enable_disable(enable=0)
+ self.vapi.cli("clear logging")
+
def test_clear_sessions(self):
""" NAT44 session clearing test """
is_add=1)
# in2out
- tcpn = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/TCP packets')
- udpn = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/good in2out packets processed')
+ tcpn = self.statistics.get_counter('/nat44/in2out/slowpath/tcp')[0]
+ udpn = self.statistics.get_counter('/nat44/in2out/slowpath/udp')[0]
+ icmpn = self.statistics.get_counter('/nat44/in2out/slowpath/icmp')[0]
+ drops = self.statistics.get_counter('/nat44/in2out/slowpath/drops')[0]
pkts = self.create_stream_in(self.pg0, self.pg1)
self.pg0.add_stream(pkts)
capture = self.pg1.get_capture(len(pkts))
self.verify_capture_out(capture)
- err = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/TCP packets')
- self.assertEqual(err - tcpn, 2)
- err = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-in2out-slowpath/good in2out packets processed')
- self.assertEqual(err - totaln, 4)
+ if_idx = self.pg0.sw_if_index
+ cnt = self.statistics.get_counter('/nat44/in2out/slowpath/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+ cnt = self.statistics.get_counter('/nat44/in2out/slowpath/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/in2out/slowpath/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/in2out/slowpath/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
# out2in
- tcpn = self.statistics.get_err_counter('/err/nat44-out2in/TCP packets')
- udpn = self.statistics.get_err_counter('/err/nat44-out2in/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat44-out2in/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat44-out2in/good out2in packets processed')
+ tcpn = self.statistics.get_counter('/nat44/out2in/slowpath/tcp')[0]
+ udpn = self.statistics.get_counter('/nat44/out2in/slowpath/udp')[0]
+ icmpn = self.statistics.get_counter('/nat44/out2in/slowpath/icmp')[0]
+ drops = self.statistics.get_counter('/nat44/out2in/slowpath/drops')[0]
pkts = self.create_stream_out(self.pg1)
self.pg1.add_stream(pkts)
capture = self.pg0.get_capture(len(pkts))
self.verify_capture_in(capture, self.pg0)
- err = self.statistics.get_err_counter('/err/nat44-out2in/TCP packets')
- self.assertEqual(err - tcpn, 2)
- err = self.statistics.get_err_counter('/err/nat44-out2in/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter('/err/nat44-out2in/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-out2in/good out2in packets processed')
- self.assertEqual(err - totaln, 4)
+ if_idx = self.pg1.sw_if_index
+ cnt = self.statistics.get_counter('/nat44/out2in/slowpath/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+ cnt = self.statistics.get_counter('/nat44/out2in/slowpath/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/out2in/slowpath/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/out2in/slowpath/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
users = self.statistics.get_counter('/nat44/total-users')
self.assertEqual(users[0][0], 1)
server_in_port, server_out_port,
proto=IP_PROTOS.tcp)
+ cnt = self.statistics.get_counter('/nat44/hairpinning')[0]
# send packet from host to server
p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
IP(src=host.ip4, dst=self.nat_addr) /
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
+ after = self.statistics.get_counter('/nat44/hairpinning')[0]
+ if_idx = self.pg0.sw_if_index
+ self.assertEqual(after[if_idx] - cnt[if_idx], 1)
+
# send reply from server to host
p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
IP(src=server.ip4, dst=self.nat_addr) /
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
+ after = self.statistics.get_counter('/nat44/hairpinning')[0]
+ if_idx = self.pg0.sw_if_index
+ self.assertEqual(after[if_idx] - cnt[if_idx], 2)
+
def test_hairpinning2(self):
""" NAT44 hairpinning - 1:1 NAT"""
sw_if_index=self.pg1.sw_if_index,
is_add=1)
- nat44_config = self.vapi.nat_show_config()
- max_sessions = 10 * nat44_config.translation_buckets
+ max_sessions = self.max_translations
pkts = []
for i in range(0, max_sessions):
self.assertEqual(tcp.sport, self.tcp_external_port)
self.assertEqual(tcp.dport, self.tcp_port_in)
- def tearDown(self):
- super(TestNAT44, self).tearDown()
- self.clear_nat44()
- self.vapi.cli("clear logging")
-
def show_commands_at_teardown(self):
self.logger.info(self.vapi.cli("show nat44 addresses"))
self.logger.info(self.vapi.cli("show nat44 interfaces"))
class TestNAT44EndpointDependent2(MethodHolder):
""" Endpoint-Dependent mapping and filtering test cases """
- @classmethod
- def setUpConstants(cls):
- super(TestNAT44EndpointDependent2, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "endpoint-dependent", "}"])
-
@classmethod
def tearDownClass(cls):
super(TestNAT44EndpointDependent2, cls).tearDownClass()
def setUp(self):
super(TestNAT44EndpointDependent2, self).setUp()
+ flags = self.nat44_config_flags.NAT44_IS_ENDPOINT_DEPENDENT
+ self.vapi.nat44_plugin_enable_disable(enable=1, flags=flags)
- nat_config = self.vapi.nat_show_config()
- self.assertEqual(1, nat_config.endpoint_dependent)
+ def tearDown(self):
+ super(TestNAT44EndpointDependent2, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.nat44_plugin_enable_disable(enable=0)
+ self.vapi.cli("clear logging")
def nat_add_inside_interface(self, i):
self.vapi.nat44_interface_add_del_feature(
class TestNAT44EndpointDependent(MethodHolder):
""" Endpoint-Dependent mapping and filtering test cases """
- @classmethod
- def setUpConstants(cls):
- super(TestNAT44EndpointDependent, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "endpoint-dependent", "}"])
-
@classmethod
def setUpClass(cls):
super(TestNAT44EndpointDependent, cls).setUpClass()
cls.pg8.config_ip4()
cls.pg8.resolve_arp()
+ @classmethod
+ def tearDownClass(cls):
+ super(TestNAT44EndpointDependent, cls).tearDownClass()
+
def setUp(self):
super(TestNAT44EndpointDependent, self).setUp()
+ flags = self.nat44_config_flags.NAT44_IS_ENDPOINT_DEPENDENT
+ self.vapi.nat44_plugin_enable_disable(enable=1, flags=flags)
self.vapi.nat_set_timeouts(
- udp=300, tcp_established=7440, tcp_transitory=240, icmp=60)
+ udp=300, tcp_established=7440,
+ tcp_transitory=240, icmp=60)
- @classmethod
- def tearDownClass(cls):
- super(TestNAT44EndpointDependent, cls).tearDownClass()
+ def tearDown(self):
+ super(TestNAT44EndpointDependent, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.nat44_plugin_enable_disable(enable=0)
+ self.vapi.cli("clear logging")
def test_frag_in_order(self):
""" NAT44 translate fragments arriving in order """
self.vapi.nat44_interface_add_del_feature(
sw_if_index=self.pg1.sw_if_index,
is_add=1)
- self.frag_in_order(proto=IP_PROTOS.tcp)
- self.frag_in_order(proto=IP_PROTOS.udp)
- self.frag_in_order(proto=IP_PROTOS.icmp)
+ self.frag_in_order(proto=IP_PROTOS.tcp, ignore_port=True)
+ self.frag_in_order(proto=IP_PROTOS.udp, ignore_port=True)
+ self.frag_in_order(proto=IP_PROTOS.icmp, ignore_port=True)
def test_frag_in_order_dont_translate(self):
""" NAT44 don't translate fragments arriving in order """
self.vapi.nat44_interface_add_del_feature(
sw_if_index=self.pg1.sw_if_index,
is_add=1)
- self.frag_out_of_order(proto=IP_PROTOS.tcp)
- self.frag_out_of_order(proto=IP_PROTOS.udp)
- self.frag_out_of_order(proto=IP_PROTOS.icmp)
+ self.frag_out_of_order(proto=IP_PROTOS.tcp, ignore_port=True)
+ self.frag_out_of_order(proto=IP_PROTOS.udp, ignore_port=True)
+ self.frag_out_of_order(proto=IP_PROTOS.icmp, ignore_port=True)
def test_frag_out_of_order_dont_translate(self):
""" NAT44 don't translate fragments arriving out of order """
proto=IP_PROTOS.udp)
self.nat44_add_static_mapping(self.server.ip4, self.nat_addr)
- self.reass_hairpinning(proto=IP_PROTOS.tcp)
- self.reass_hairpinning(proto=IP_PROTOS.udp)
- self.reass_hairpinning(proto=IP_PROTOS.icmp)
+ self.reass_hairpinning(proto=IP_PROTOS.tcp, ignore_port=True)
+ self.reass_hairpinning(proto=IP_PROTOS.udp, ignore_port=True)
+ self.reass_hairpinning(proto=IP_PROTOS.icmp, ignore_port=True)
def test_clear_sessions(self):
""" NAT44 ED session clearing test """
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture)
+ self.verify_capture_out(capture, ignore_port=True)
sessions = self.statistics.get_counter('/nat44/total-sessions')
self.assertTrue(sessions[0][0] > 0)
self.assertEqual(1, nat_config.endpoint_dependent)
# in2out
- tcpn = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/TCP packets')
- udpn = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/good in2out packets processed')
+ tcpn = self.statistics.get_counter('/nat44/ed/in2out/slowpath/tcp')[0]
+ udpn = self.statistics.get_counter('/nat44/ed/in2out/slowpath/udp')[0]
+ icmpn = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/icmp')[0]
+ drops = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/drops')[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)
-
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/TCP packets')
- self.assertEqual(err - tcpn, 2)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/good in2out packets processed')
- self.assertEqual(err - totaln, 4)
+ self.verify_capture_out(capture, ignore_port=True)
+
+ if_idx = self.pg0.sw_if_index
+ cnt = self.statistics.get_counter('/nat44/ed/in2out/slowpath/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+ cnt = self.statistics.get_counter('/nat44/ed/in2out/slowpath/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/ed/in2out/slowpath/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/ed/in2out/slowpath/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
# out2in
- tcpn = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/TCP packets')
- udpn = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in-slowpath/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/good out2in packets processed')
+ tcpn = self.statistics.get_counter('/nat44/ed/out2in/fastpath/tcp')[0]
+ udpn = self.statistics.get_counter('/nat44/ed/out2in/fastpath/udp')[0]
+ icmpn = self.statistics.get_counter(
+ '/nat44/ed/out2in/slowpath/icmp')[0]
+ drops = self.statistics.get_counter(
+ '/nat44/ed/out2in/fastpath/drops')[0]
pkts = self.create_stream_out(self.pg1)
self.pg1.add_stream(pkts)
capture = self.pg0.get_capture(len(pkts))
self.verify_capture_in(capture, self.pg0)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/TCP packets')
- self.assertEqual(err - tcpn, 2)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in-slowpath/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/good out2in packets processed')
- self.assertEqual(err - totaln, 3)
+ if_idx = self.pg1.sw_if_index
+ cnt = self.statistics.get_counter('/nat44/ed/out2in/fastpath/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+ cnt = self.statistics.get_counter('/nat44/ed/out2in/fastpath/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/ed/out2in/slowpath/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat44/ed/out2in/fastpath/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
sessions = self.statistics.get_counter('/nat44/total-sessions')
self.assertEqual(sessions[0][0], 3)
+ def test_dynamic_out_of_ports(self):
+ """ NAT44 dynamic translation test: out of ports """
+
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ flags=flags, is_add=1)
+ self.vapi.nat44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1)
+
+ nat_config = self.vapi.nat_show_config()
+ self.assertEqual(1, nat_config.endpoint_dependent)
+
+ # in2out and no NAT addresses added
+ err_old = self.statistics.get_err_counter(
+ '/err/nat44-ed-in2out-slowpath/out of ports')
+
+ pkts = self.create_stream_in(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(0, timeout=1)
+
+ err_new = self.statistics.get_err_counter(
+ '/err/nat44-ed-in2out-slowpath/out of ports')
+
+ self.assertEqual(err_new - err_old, len(pkts))
+
+ # in2out after NAT addresses added
+ self.nat44_add_address(self.nat_addr)
+
+ err_old = self.statistics.get_err_counter(
+ '/err/nat44-ed-in2out-slowpath/out of ports')
+
+ 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, ignore_port=True)
+
+ err_new = self.statistics.get_err_counter(
+ '/err/nat44-ed-in2out-slowpath/out of ports')
+
+ self.assertEqual(err_new, err_old)
+
def test_dynamic_output_feature_vrf(self):
""" NAT44 dynamic translation test: output-feature, VRF"""
self.assertEqual(1, nat_config.endpoint_dependent)
# in2out
- tcpn = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/TCP packets')
- udpn = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/good in2out packets processed')
+ tcpn = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/tcp')[0]
+ udpn = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/udp')[0]
+ icmpn = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/icmp')[0]
+ drops = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/drops')[0]
pkts = self.create_stream_in(self.pg7, self.pg8)
self.pg7.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = self.pg8.get_capture(len(pkts))
- self.verify_capture_out(capture)
-
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/TCP packets')
- self.assertEqual(err - tcpn, 2)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-in2out-slowpath/good in2out packets processed')
- self.assertEqual(err - totaln, 4)
+ self.verify_capture_out(capture, ignore_port=True)
+
+ if_idx = self.pg7.sw_if_index
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/in2out/slowpath/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
# out2in
- tcpn = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/TCP packets')
- udpn = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in-slowpath/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/good out2in packets processed')
+ tcpn = self.statistics.get_counter(
+ '/nat44/ed/out2in/fastpath/tcp')[0]
+ udpn = self.statistics.get_counter(
+ '/nat44/ed/out2in/fastpath/udp')[0]
+ icmpn = self.statistics.get_counter(
+ '/nat44/ed/out2in/slowpath/icmp')[0]
+ drops = self.statistics.get_counter(
+ '/nat44/ed/out2in/fastpath/drops')[0]
pkts = self.create_stream_out(self.pg8)
self.pg8.add_stream(pkts)
capture = self.pg7.get_capture(len(pkts))
self.verify_capture_in(capture, self.pg7)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/TCP packets')
- self.assertEqual(err - tcpn, 2)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in-slowpath/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat44-ed-out2in/good out2in packets processed')
- self.assertEqual(err - totaln, 3)
+ if_idx = self.pg8.sw_if_index
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/out2in/fastpath/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/out2in/fastpath/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/out2in/slowpath/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter(
+ '/nat44/ed/out2in/fastpath/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
sessions = self.statistics.get_counter('/nat44/total-sessions')
self.assertEqual(sessions[0][0], 3)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture)
+ self.verify_capture_out(capture, ignore_port=True)
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)
+ self.verify_capture_out(capture, ignore_port=True)
# from external network back to local network host
pkts = self.create_stream_out(self.pg1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture)
+ self.verify_capture_out(capture, ignore_port=True)
pkts = self.create_stream_out(self.pg1)
self.pg1.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)
+ self.verify_capture_out(capture, ignore_port=True)
# out2in
pkts = self.create_stream_out(self.pg1)
pkts_in2out = self.create_stream_in(self.pg0, self.pg1)
capture = self.send_and_expect(self.pg0, pkts_in2out, self.pg1,
len(pkts_in2out))
- self.verify_capture_out(capture)
+ self.verify_capture_out(capture, ignore_port=True)
# send out2in again, with sessions created it should work now
pkts_out2in = self.create_stream_out(self.pg1)
# send in2out to generate ACL state (NAT state was created earlier)
capture = self.send_and_expect(self.pg0, pkts_in2out, self.pg1,
len(pkts_in2out))
- self.verify_capture_out(capture)
+ self.verify_capture_out(capture, ignore_port=True)
# send out2in again. ACL state exists so it should work now.
# TCP packets with the syn flag set also need the ack flag
is_add=1)
self.vapi.nat44_interface_add_del_feature(
sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
+ is_add=1, flags=flags)
self.vapi.nat44_interface_add_del_output_feature(
- is_add=1,
- sw_if_index=self.pg1.sw_if_index)
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1)
self.vapi.nat44_interface_add_del_feature(
sw_if_index=self.pg5.sw_if_index,
is_add=1)
self.vapi.nat44_interface_add_del_feature(
sw_if_index=self.pg5.sw_if_index,
- flags=flags, is_add=1)
+ is_add=1, flags=flags)
self.vapi.nat44_interface_add_del_feature(
sw_if_index=self.pg6.sw_if_index,
is_add=1)
ip = p[IP]
tcp = p[TCP]
self.assertEqual(ip.src, self.nat_addr)
- self.assertNotEqual(tcp.sport, 2345)
self.assert_packet_checksums_valid(p)
port = tcp.sport
except:
capture = self.pg2.get_capture(1)
self.verify_syslog_sess(capture[0][Raw].load, False)
- def tearDown(self):
- super(TestNAT44EndpointDependent, self).tearDown()
- if not self.vpp_dead:
- self.clear_nat44()
- self.vapi.cli("clear logging")
-
- def show_commands_at_teardown(self):
- 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 nat44 hash tables detail"))
- self.logger.info(self.vapi.cli("show nat timeouts"))
+ def test_ed_users_dump(self):
+ """ API test - nat44_user_dump """
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ flags=flags, is_add=1)
+ self.vapi.nat44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ is_add=1)
+ self.vapi.nat44_forwarding_enable_disable(enable=1)
+ real_ip = self.pg0.remote_ip4
+ alias_ip = self.nat_addr
+ flags = self.config_flags.NAT_IS_ADDR_ONLY
+ self.vapi.nat44_add_del_static_mapping(is_add=1,
+ local_ip_address=real_ip,
+ external_ip_address=alias_ip,
+ external_sw_if_index=0xFFFFFFFF,
+ flags=flags)
-class TestNAT44Out2InDPO(MethodHolder):
- """ NAT44 Test Cases using out2in DPO """
+ users = self.vapi.nat44_user_dump()
+ self.assertEqual(len(users), 0)
+ try:
+ # in2out - static mapping match
+
+ 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)
+
+ 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, same_port=True)
+
+ users = self.vapi.nat44_user_dump()
+ self.assertEqual(len(users), 1)
+ static_user = users[0]
+ self.assertEqual(static_user.nstaticsessions, 3)
+ self.assertEqual(static_user.nsessions, 0)
+
+ # in2out - no static mapping match
+
+ host0 = self.pg0.remote_hosts[0]
+ self.pg0.remote_hosts[0] = self.pg0.remote_hosts[1]
+ try:
+ pkts = self.create_stream_out(self.pg1,
+ dst_ip=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)
+ finally:
+ self.pg0.remote_hosts[0] = host0
+
+ users = self.vapi.nat44_user_dump()
+ self.assertEqual(len(users), 2)
+ if str(users[0].ip_address) == self.pg0.remote_hosts[0].ip4:
+ non_static_user = users[1]
+ static_user = users[0]
+ else:
+ non_static_user = users[0]
+ static_user = users[1]
+ self.assertEqual(static_user.nstaticsessions, 3)
+ self.assertEqual(static_user.nsessions, 0)
+ self.assertEqual(non_static_user.nstaticsessions, 0)
+ self.assertEqual(non_static_user.nsessions, 3)
+
+ users = self.vapi.nat44_user_dump()
+ self.assertEqual(len(users), 2)
+ if str(users[0].ip_address) == self.pg0.remote_hosts[0].ip4:
+ non_static_user = users[1]
+ static_user = users[0]
+ else:
+ non_static_user = users[0]
+ static_user = users[1]
+ self.assertEqual(static_user.nstaticsessions, 3)
+ self.assertEqual(static_user.nsessions, 0)
+ self.assertEqual(non_static_user.nstaticsessions, 0)
+ self.assertEqual(non_static_user.nsessions, 3)
+
+ finally:
+ self.vapi.nat44_forwarding_enable_disable(enable=0)
+ flags = self.config_flags.NAT_IS_ADDR_ONLY
+ self.vapi.nat44_add_del_static_mapping(
+ is_add=0,
+ local_ip_address=real_ip,
+ external_ip_address=alias_ip,
+ external_sw_if_index=0xFFFFFFFF,
+ flags=flags)
+
+ def show_commands_at_teardown(self):
+ self.logger.info(self.vapi.cli("show errors"))
+ 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 nat44 hash tables detail"))
+ self.logger.info(self.vapi.cli("show nat timeouts"))
+ self.logger.info(self.vapi.cli("debug nat44 fib registration"))
+
+
+class TestNAT44EndpointDependent3(MethodHolder):
+ """ Endpoint-Dependent mapping and filtering extra test cases """
+
+ max_translations = 50
@classmethod
- def setUpConstants(cls):
- super(TestNAT44Out2InDPO, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "out2in dpo", "}"])
+ def setUpClass(cls):
+ super(TestNAT44EndpointDependent3, cls).setUpClass()
+ cls.vapi.cli("set log class nat level debug")
+
+ cls.nat_addr = '10.0.0.3'
+
+ cls.create_pg_interfaces(range(2))
+
+ for i in cls.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ def setUp(self):
+ super(TestNAT44EndpointDependent3, self).setUp()
+ flags = self.nat44_config_flags.NAT44_IS_ENDPOINT_DEPENDENT
+ self.vapi.nat44_plugin_enable_disable(
+ sessions=self.max_translations,
+ flags=flags, enable=1)
+ self.vapi.nat_set_timeouts(
+ udp=1, tcp_established=7440, tcp_transitory=30, icmp=1)
+
+ self.nat44_add_address(self.nat_addr)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat44_interface_add_del_feature(
+ sw_if_index=self.pg0.sw_if_index, flags=flags, is_add=1)
+ self.vapi.nat44_interface_add_del_feature(
+ sw_if_index=self.pg1.sw_if_index, is_add=1)
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestNAT44EndpointDependent3, cls).tearDownClass()
+
+ def tearDown(self):
+ super(TestNAT44EndpointDependent3, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.nat44_plugin_enable_disable(enable=0)
+ self.vapi.cli("clear logging")
+
+ def init_tcp_session(self, in_if, out_if, sport, ext_dport):
+ # SYN packet in->out
+ p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+ TCP(sport=sport, dport=ext_dport, flags="S"))
+ in_if.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = out_if.get_capture(1)
+ p = capture[0]
+ tcp_port_out = p[TCP].sport
+
+ # SYN + ACK packet out->in
+ p = (Ether(src=out_if.remote_mac, dst=out_if.local_mac) /
+ IP(src=out_if.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=ext_dport, dport=tcp_port_out, flags="SA"))
+ out_if.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ in_if.get_capture(1)
+
+ # ACK packet in->out
+ p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
+ TCP(sport=sport, dport=ext_dport, flags="A"))
+ in_if.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ out_if.get_capture(1)
+
+ return tcp_port_out
+
+ def test_lru_cleanup(self):
+ """ LRU cleanup algorithm """
+ tcp_port_out = self.init_tcp_session(self.pg0, self.pg1, 2000, 80)
+ pkts = []
+ for i in range(0, self.max_translations - 1):
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, ttl=64) /
+ UDP(sport=7000+i, dport=80))
+ pkts.append(p)
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(len(pkts))
+ self.sleep(1.5, "wait for timeouts")
+
+ pkts = []
+ for i in range(0, self.max_translations - 1):
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, ttl=64) /
+ ICMP(id=8000+i, type='echo-request'))
+ pkts.append(p)
+
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(len(pkts))
+
+
+class TestNAT44Out2InDPO(MethodHolder):
+ """ NAT44 Test Cases using out2in DPO """
@classmethod
def setUpClass(cls):
def tearDownClass(cls):
super(TestNAT44Out2InDPO, cls).tearDownClass()
+ def setUp(self):
+ super(TestNAT44Out2InDPO, self).setUp()
+ flags = self.nat44_config_flags.NAT44_API_IS_OUT2IN_DPO
+ self.vapi.nat44_plugin_enable_disable(enable=1, flags=flags)
+
+ def tearDown(self):
+ super(TestNAT44Out2InDPO, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.nat44_plugin_enable_disable(enable=0)
+ self.vapi.cli("clear logging")
+
def configure_xlat(self):
self.dst_ip6_pfx = '1:2:3::'
self.dst_ip6_pfx_n = socket.inet_pton(socket.AF_INET6,
self.verify_capture_in(capture, self.pg0)
-class TestDeterministicNAT(MethodHolder):
- """ Deterministic NAT Test Cases """
-
- @classmethod
- def setUpConstants(cls):
- super(TestDeterministicNAT, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "deterministic", "}"])
-
- @classmethod
- def setUpClass(cls):
- super(TestDeterministicNAT, cls).setUpClass()
- cls.vapi.cli("set log class nat level debug")
-
- cls.tcp_port_in = 6303
- cls.tcp_external_port = 6303
- cls.udp_port_in = 6304
- cls.udp_external_port = 6304
- cls.icmp_id_in = 6305
- cls.nat_addr = '10.0.0.3'
-
- cls.create_pg_interfaces(range(3))
- cls.interfaces = list(cls.pg_interfaces)
-
- for i in cls.interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
-
- cls.pg0.generate_remote_hosts(2)
- cls.pg0.configure_ipv4_neighbors()
-
- @classmethod
- def tearDownClass(cls):
- super(TestDeterministicNAT, cls).tearDownClass()
-
- def create_stream_in(self, in_if, out_if, ttl=64):
- """
- Create packet stream for inside network
-
- :param in_if: Inside interface
- :param out_if: Outside interface
- :param ttl: TTL of generated packets
- """
- pkts = []
- # TCP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
- pkts.append(p)
-
- # UDP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- UDP(sport=self.udp_port_in, dport=self.udp_external_port))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- ICMP(id=self.icmp_id_in, type='echo-request'))
- pkts.append(p)
-
- return pkts
-
- def create_stream_out(self, out_if, dst_ip=None, ttl=64):
- """
- Create packet stream for outside network
-
- :param out_if: Outside interface
- :param dst_ip: Destination IP address (Default use global NAT address)
- :param ttl: TTL of generated packets
- """
- if dst_ip is None:
- dst_ip = self.nat_addr
- pkts = []
- # TCP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- TCP(dport=self.tcp_port_out, sport=self.tcp_external_port))
- pkts.append(p)
-
- # UDP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- UDP(dport=self.udp_port_out, sport=self.udp_external_port))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- ICMP(id=self.icmp_external_id, type='echo-reply'))
- pkts.append(p)
-
- return pkts
-
- def verify_capture_out(self, capture, nat_ip=None):
- """
- Verify captured packets on outside network
-
- :param capture: Captured packets
- :param nat_ip: Translated IP address (Default use global NAT address)
- :param same_port: Source port number is not translated (Default False)
- """
- if nat_ip is None:
- nat_ip = self.nat_addr
- for packet in capture:
- try:
- self.assertEqual(packet[IP].src, nat_ip)
- if packet.haslayer(TCP):
- self.tcp_port_out = packet[TCP].sport
- elif packet.haslayer(UDP):
- self.udp_port_out = packet[UDP].sport
- else:
- self.icmp_external_id = packet[ICMP].id
- except:
- self.logger.error(ppp("Unexpected or invalid packet "
- "(outside network):", packet))
- raise
-
- def test_deterministic_mode(self):
- """ NAT plugin run deterministic mode """
- in_addr = '172.16.255.0'
- out_addr = '172.17.255.50'
- in_addr_t = '172.16.255.20'
- in_plen = 24
- out_plen = 32
-
- nat_config = self.vapi.nat_show_config()
- self.assertEqual(1, nat_config.deterministic)
-
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=in_addr,
- in_plen=in_plen, out_addr=out_addr,
- out_plen=out_plen)
-
- rep1 = self.vapi.nat_det_forward(in_addr_t)
- self.assertEqual(str(rep1.out_addr), out_addr)
- rep2 = self.vapi.nat_det_reverse(rep1.out_port_hi, out_addr)
-
- self.assertEqual(str(rep2.in_addr), in_addr_t)
-
- deterministic_mappings = self.vapi.nat_det_map_dump()
- self.assertEqual(len(deterministic_mappings), 1)
- dsm = deterministic_mappings[0]
- self.assertEqual(in_addr, str(dsm.in_addr))
- self.assertEqual(in_plen, dsm.in_plen)
- self.assertEqual(out_addr, str(dsm.out_addr))
- self.assertEqual(out_plen, dsm.out_plen)
-
- self.clear_nat_det()
- deterministic_mappings = self.vapi.nat_det_map_dump()
- self.assertEqual(len(deterministic_mappings), 0)
-
- def test_set_timeouts(self):
- """ Set deterministic NAT timeouts """
- timeouts_before = self.vapi.nat_get_timeouts()
-
- self.vapi.nat_set_timeouts(
- udp=timeouts_before.udp + 10,
- tcp_established=timeouts_before.tcp_established + 10,
- tcp_transitory=timeouts_before.tcp_transitory + 10,
- icmp=timeouts_before.icmp + 10)
-
- timeouts_after = self.vapi.nat_get_timeouts()
-
- self.assertNotEqual(timeouts_before.udp, timeouts_after.udp)
- self.assertNotEqual(timeouts_before.icmp, timeouts_after.icmp)
- self.assertNotEqual(timeouts_before.tcp_established,
- timeouts_after.tcp_established)
- self.assertNotEqual(timeouts_before.tcp_transitory,
- timeouts_after.tcp_transitory)
-
- def test_det_in(self):
- """ Deterministic NAT translation test (TCP, UDP, ICMP) """
-
- nat_ip = "10.0.0.10"
-
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(nat_ip),
- out_plen=32)
-
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- # 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, nat_ip)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, nat_ip)
- 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)
-
- # session dump test
- sessions = self.vapi.nat_det_session_dump(self.pg0.remote_ip4)
- self.assertEqual(len(sessions), 3)
-
- # TCP session
- s = sessions[0]
- self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
- self.assertEqual(s.in_port, self.tcp_port_in)
- self.assertEqual(s.out_port, self.tcp_port_out)
- self.assertEqual(s.ext_port, self.tcp_external_port)
-
- # UDP session
- s = sessions[1]
- self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
- self.assertEqual(s.in_port, self.udp_port_in)
- self.assertEqual(s.out_port, self.udp_port_out)
- self.assertEqual(s.ext_port, self.udp_external_port)
-
- # ICMP session
- s = sessions[2]
- self.assertEqual(str(s.ext_addr), self.pg1.remote_ip4)
- self.assertEqual(s.in_port, self.icmp_id_in)
- self.assertEqual(s.out_port, self.icmp_external_id)
-
- def test_multiple_users(self):
- """ Deterministic NAT multiple users """
-
- nat_ip = "10.0.0.10"
- port_in = 80
- external_port = 6303
-
- host0 = self.pg0.remote_hosts[0]
- host1 = self.pg0.remote_hosts[1]
-
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=host0.ip4, in_plen=24,
- out_addr=socket.inet_aton(nat_ip),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- # host0 to out
- p = (Ether(src=host0.mac, dst=self.pg0.local_mac) /
- IP(src=host0.ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=port_in, 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, nat_ip)
- self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(tcp.dport, external_port)
- port_out0 = tcp.sport
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- # host1 to out
- p = (Ether(src=host1.mac, dst=self.pg0.local_mac) /
- IP(src=host1.ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=port_in, 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, nat_ip)
- self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(tcp.dport, external_port)
- port_out1 = tcp.sport
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(1, len(dms))
- self.assertEqual(2, dms[0].ses_num)
-
- # out to host0
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=nat_ip) /
- TCP(sport=external_port, dport=port_out0))
- 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, self.pg1.remote_ip4)
- self.assertEqual(ip.dst, host0.ip4)
- self.assertEqual(tcp.dport, port_in)
- self.assertEqual(tcp.sport, external_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- # out to host1
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=nat_ip) /
- TCP(sport=external_port, dport=port_out1))
- 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, self.pg1.remote_ip4)
- self.assertEqual(ip.dst, host1.ip4)
- self.assertEqual(tcp.dport, port_in)
- self.assertEqual(tcp.sport, external_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet", p))
- raise
-
- # session close api test
- self.vapi.nat_det_close_session_out(socket.inet_aton(nat_ip),
- port_out1,
- self.pg1.remote_ip4,
- external_port)
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(dms[0].ses_num, 1)
-
- self.vapi.nat_det_close_session_in(host0.ip4,
- port_in,
- self.pg1.remote_ip4,
- external_port)
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(dms[0].ses_num, 0)
-
- def test_tcp_session_close_detection_in(self):
- """ Deterministic NAT TCP session close from inside network """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- self.initiate_tcp_session(self.pg0, self.pg1)
-
- # close the session from inside
- try:
- # FIN packet in -> out
- 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=self.tcp_port_in, dport=self.tcp_external_port,
- flags="F"))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(1)
-
- pkts = []
-
- # ACK packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="A"))
- pkts.append(p)
-
- # FIN packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="F"))
- pkts.append(p)
-
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg0.get_capture(2)
-
- # ACK packet in -> out
- 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=self.tcp_port_in, dport=self.tcp_external_port,
- flags="A"))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(1)
-
- # Check if deterministic NAT44 closed the session
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(0, dms[0].ses_num)
- except:
- self.logger.error("TCP session termination failed")
- raise
-
- def test_tcp_session_close_detection_out(self):
- """ Deterministic NAT TCP session close from outside network """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- self.initiate_tcp_session(self.pg0, self.pg1)
-
- # close the session from outside
- try:
- # FIN packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="F"))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg0.get_capture(1)
-
- pkts = []
-
- # ACK packet in -> out
- 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=self.tcp_port_in, dport=self.tcp_external_port,
- flags="A"))
- pkts.append(p)
-
- # ACK packet in -> out
- 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=self.tcp_port_in, dport=self.tcp_external_port,
- flags="F"))
- pkts.append(p)
-
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(2)
-
- # ACK packet out -> in
- p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
- flags="A"))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg0.get_capture(1)
-
- # Check if deterministic NAT44 closed the session
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(0, dms[0].ses_num)
- except:
- self.logger.error("TCP session termination failed")
- raise
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_timeout(self):
- """ Deterministic NAT session timeouts """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
-
- self.initiate_tcp_session(self.pg0, self.pg1)
- self.vapi.nat_set_timeouts(udp=5, tcp_established=5, tcp_transitory=5,
- icmp=5)
- 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))
- sleep(15)
-
- dms = self.vapi.nat_det_map_dump()
- self.assertEqual(0, dms[0].ses_num)
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_limit_per_user(self):
- """ Deterministic NAT maximum sessions per user limit """
- self.vapi.nat_det_add_del_map(is_add=1, in_addr=self.pg0.remote_ip4,
- in_plen=32,
- out_addr=socket.inet_aton(self.nat_addr),
- out_plen=32)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg0.sw_if_index,
- flags=flags, is_add=1)
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=self.pg1.sw_if_index,
- is_add=1)
- self.vapi.set_ipfix_exporter(collector_address=self.pg2.remote_ip4,
- src_address=self.pg2.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
- enable=1)
-
- pkts = []
- for port in range(1025, 2025):
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- UDP(sport=port, dport=port))
- 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))
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- UDP(sport=3001, dport=3002))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.assert_nothing_captured()
-
- # verify ICMP error packet
- capture = self.pg0.get_capture(1)
- p = capture[0]
- self.assertTrue(p.haslayer(ICMP))
- icmp = p[ICMP]
- self.assertEqual(icmp.type, 3)
- self.assertEqual(icmp.code, 1)
- self.assertTrue(icmp.haslayer(IPerror))
- inner_ip = icmp[IPerror]
- self.assertEqual(inner_ip[UDPerror].sport, 3001)
- self.assertEqual(inner_ip[UDPerror].dport, 3002)
-
- dms = self.vapi.nat_det_map_dump()
-
- self.assertEqual(1000, dms[0].ses_num)
-
- # verify IPFIX logging
- self.vapi.ipfix_flush()
- sleep(1)
- capture = self.pg2.get_capture(2)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_entries_per_user(data,
- 1000,
- self.pg0.remote_ip4)
-
- def clear_nat_det(self):
- """
- Clear deterministic NAT configuration.
- """
- self.vapi.nat_ipfix_enable_disable(domain_id=1, src_port=4739,
- enable=0)
- self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
- tcp_transitory=240, icmp=60)
- deterministic_mappings = self.vapi.nat_det_map_dump()
- for dsm in deterministic_mappings:
- self.vapi.nat_det_add_del_map(is_add=0, in_addr=dsm.in_addr,
- in_plen=dsm.in_plen,
- out_addr=dsm.out_addr,
- out_plen=dsm.out_plen)
-
- interfaces = self.vapi.nat44_interface_dump()
- for intf in interfaces:
- self.vapi.nat44_interface_add_del_feature(
- sw_if_index=intf.sw_if_index,
- flags=intf.flags)
-
- def tearDown(self):
- super(TestDeterministicNAT, self).tearDown()
- if not self.vpp_dead:
- self.clear_nat_det()
-
- def show_commands_at_teardown(self):
- self.logger.info(self.vapi.cli("show nat44 interfaces"))
- self.logger.info(self.vapi.cli("show nat timeouts"))
- self.logger.info(
- self.vapi.cli("show nat44 deterministic mappings"))
- self.logger.info(
- self.vapi.cli("show nat44 deterministic sessions"))
-
-
-class TestNAT64(MethodHolder):
- """ NAT64 Test Cases """
-
- @classmethod
- def setUpConstants(cls):
- super(TestNAT64, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "nat64 bib hash buckets 128",
- "nat64 st hash buckets 256", "}"])
-
- @classmethod
- def setUpClass(cls):
- super(TestNAT64, cls).setUpClass()
-
- 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.tcp_external_port = 80
- cls.nat_addr = '10.0.0.3'
- cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
- cls.vrf1_id = 10
- cls.vrf1_nat_addr = '10.0.10.3'
- cls.ipfix_src_port = 4739
- cls.ipfix_domain_id = 1
-
- cls.create_pg_interfaces(range(6))
- cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
- cls.ip6_interfaces.append(cls.pg_interfaces[2])
- cls.ip4_interfaces = list(cls.pg_interfaces[1:2])
-
- cls.vapi.ip_table_add_del(is_add=1,
- table={'table_id': cls.vrf1_id,
- 'is_ip6': 1})
-
- cls.pg_interfaces[2].set_table_ip6(cls.vrf1_id)
-
- cls.pg0.generate_remote_hosts(2)
-
- for i in cls.ip6_interfaces:
- i.admin_up()
- i.config_ip6()
- i.configure_ipv6_neighbors()
-
- for i in cls.ip4_interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
-
- cls.pg3.admin_up()
- cls.pg3.config_ip4()
- cls.pg3.resolve_arp()
- cls.pg3.config_ip6()
- cls.pg3.configure_ipv6_neighbors()
-
- cls.pg5.admin_up()
- cls.pg5.config_ip6()
-
- @classmethod
- def tearDownClass(cls):
- super(TestNAT64, cls).tearDownClass()
-
- def test_nat64_inside_interface_handles_neighbor_advertisement(self):
- """ NAT64 inside interface handles Neighbor Advertisement """
-
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg5.sw_if_index)
-
- # Try to send ping
- ping = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
- IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
- ICMPv6EchoRequest())
- pkts = [ping]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Wait for Neighbor Solicitation
- capture = self.pg5.get_capture(len(pkts))
- packet = capture[0]
- try:
- self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
- self.assertEqual(packet.haslayer(ICMPv6ND_NS), 1)
- tgt = packet[ICMPv6ND_NS].tgt
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # Send Neighbor Advertisement
- p = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
- IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
- ICMPv6ND_NA(tgt=tgt) /
- ICMPv6NDOptDstLLAddr(lladdr=self.pg5.remote_mac))
- pkts = [p]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Try to send ping again
- pkts = [ping]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Wait for ping reply
- capture = self.pg5.get_capture(len(pkts))
- packet = capture[0]
- try:
- self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
- self.assertEqual(packet[IPv6].dst, self.pg5.remote_ip6)
- self.assertEqual(packet.haslayer(ICMPv6EchoReply), 1)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_pool(self):
- """ Add/delete address to NAT64 pool """
- nat_addr = '1.2.3.4'
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
- end_addr=nat_addr,
- vrf_id=0xFFFFFFFF, is_add=1)
-
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 1)
- self.assertEqual(str(addresses[0].address), nat_addr)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
- end_addr=nat_addr,
- vrf_id=0xFFFFFFFF, is_add=0)
-
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 0)
-
- def test_interface(self):
- """ Enable/disable NAT64 feature on the interface """
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- interfaces = self.vapi.nat64_interface_dump()
- self.assertEqual(len(interfaces), 2)
- pg0_found = False
- pg1_found = False
- for intf in interfaces:
- if intf.sw_if_index == self.pg0.sw_if_index:
- self.assertEqual(intf.flags, self.config_flags.NAT_IS_INSIDE)
- pg0_found = True
- elif intf.sw_if_index == self.pg1.sw_if_index:
- self.assertEqual(intf.flags, self.config_flags.NAT_IS_OUTSIDE)
- pg1_found = True
- self.assertTrue(pg0_found)
- self.assertTrue(pg1_found)
-
- features = self.vapi.cli("show interface features pg0")
- self.assertIn('nat64-in2out', features)
- features = self.vapi.cli("show interface features pg1")
- self.assertIn('nat64-out2in', features)
-
- self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
- sw_if_index=self.pg1.sw_if_index)
-
- interfaces = self.vapi.nat64_interface_dump()
- self.assertEqual(len(interfaces), 0)
-
- def test_static_bib(self):
- """ Add/delete static BIB entry """
- in_addr = '2001:db8:85a3::8a2e:370:7334'
- out_addr = '10.1.1.3'
- in_port = 1234
- out_port = 5678
- proto = IP_PROTOS.tcp
-
- self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
- i_port=in_port, o_port=out_port,
- proto=proto, vrf_id=0, is_add=1)
- bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
- static_bib_num = 0
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- static_bib_num += 1
- self.assertEqual(str(bibe.i_addr), in_addr)
- self.assertEqual(str(bibe.o_addr), out_addr)
- self.assertEqual(bibe.i_port, in_port)
- self.assertEqual(bibe.o_port, out_port)
- self.assertEqual(static_bib_num, 1)
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
- i_port=in_port, o_port=out_port,
- proto=proto, vrf_id=0, is_add=0)
- bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
- static_bib_num = 0
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- static_bib_num += 1
- self.assertEqual(static_bib_num, 0)
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 0)
-
- def test_set_timeouts(self):
- """ Set NAT64 timeouts """
- # verify default values
- timeouts = self.vapi.nat_get_timeouts()
- self.assertEqual(timeouts.udp, 300)
- self.assertEqual(timeouts.icmp, 60)
- self.assertEqual(timeouts.tcp_transitory, 240)
- self.assertEqual(timeouts.tcp_established, 7440)
-
- # set and verify custom values
- self.vapi.nat_set_timeouts(udp=200, tcp_established=7450,
- tcp_transitory=250, icmp=30)
- timeouts = self.vapi.nat_get_timeouts()
- self.assertEqual(timeouts.udp, 200)
- self.assertEqual(timeouts.icmp, 30)
- self.assertEqual(timeouts.tcp_transitory, 250)
- self.assertEqual(timeouts.tcp_established, 7450)
-
- def test_dynamic(self):
- """ NAT64 dynamic translation test """
- self.tcp_port_in = 6303
- self.udp_port_in = 6304
- self.icmp_id_in = 6305
-
- ses_num_start = self.nat64_get_ses_num()
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- tcpn = self.statistics.get_err_counter('/err/nat64-in2out/TCP packets')
- udpn = self.statistics.get_err_counter('/err/nat64-in2out/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat64-in2out/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat64-in2out/good in2out packets processed')
-
- pkts = self.create_stream_in_ip6(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.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- err = self.statistics.get_err_counter('/err/nat64-in2out/TCP packets')
- self.assertEqual(err - tcpn, 1)
- err = self.statistics.get_err_counter('/err/nat64-in2out/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter('/err/nat64-in2out/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat64-in2out/good in2out packets processed')
- self.assertEqual(err - totaln, 3)
-
- # out2in
- tcpn = self.statistics.get_err_counter('/err/nat64-out2in/TCP packets')
- udpn = self.statistics.get_err_counter('/err/nat64-out2in/UDP packets')
- icmpn = self.statistics.get_err_counter(
- '/err/nat64-out2in/ICMP packets')
- totaln = self.statistics.get_err_counter(
- '/err/nat64-out2in/good out2in packets processed')
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- err = self.statistics.get_err_counter('/err/nat64-out2in/TCP packets')
- self.assertEqual(err - tcpn, 2)
- err = self.statistics.get_err_counter('/err/nat64-out2in/UDP packets')
- self.assertEqual(err - udpn, 1)
- err = self.statistics.get_err_counter('/err/nat64-out2in/ICMP packets')
- self.assertEqual(err - icmpn, 1)
- err = self.statistics.get_err_counter(
- '/err/nat64-out2in/good out2in packets processed')
- self.assertEqual(err - totaln, 4)
-
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 3)
- sessions = self.statistics.get_counter('/nat64/total-sessions')
- self.assertEqual(sessions[0][0], 3)
-
- # in2out
- pkts = self.create_stream_in_ip6(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.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- 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_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- ses_num_end = self.nat64_get_ses_num()
-
- self.assertEqual(ses_num_end - ses_num_start, 3)
-
- # tenant with specific VRF
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
- end_addr=self.vrf1_nat_addr,
- vrf_id=self.vrf1_id, is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg2.sw_if_index)
-
- pkts = self.create_stream_in_ip6(self.pg2, self.pg1)
- self.pg2.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.vrf1_nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg2.remote_ip6)
-
- def test_static(self):
- """ NAT64 static translation test """
- self.tcp_port_in = 60303
- self.udp_port_in = 60304
- self.icmp_id_in = 60305
- self.tcp_port_out = 60303
- self.udp_port_out = 60304
- self.icmp_id_out = 60305
-
- ses_num_start = self.nat64_get_ses_num()
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.tcp_port_in,
- o_port=self.tcp_port_out,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.udp_port_in,
- o_port=self.udp_port_out,
- proto=IP_PROTOS.udp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.icmp_id_in,
- o_port=self.icmp_id_out,
- proto=IP_PROTOS.icmp, vrf_id=0,
- is_add=1)
-
- # in2out
- pkts = self.create_stream_in_ip6(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.nat_addr,
- dst_ip=self.pg1.remote_ip4, same_port=True)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- ses_num_end = self.nat64_get_ses_num()
-
- self.assertEqual(ses_num_end - ses_num_start, 3)
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_timeout(self):
- """ NAT64 session timeout """
- self.icmp_id_in = 1234
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat_set_timeouts(udp=300, tcp_established=5,
- tcp_transitory=5,
- icmp=5)
-
- pkts = self.create_stream_in_ip6(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))
-
- ses_num_before_timeout = self.nat64_get_ses_num()
-
- sleep(15)
-
- # ICMP and TCP session after timeout
- ses_num_after_timeout = self.nat64_get_ses_num()
- self.assertEqual(ses_num_before_timeout - ses_num_after_timeout, 2)
-
- def test_icmp_error(self):
- """ NAT64 ICMP Error message translation """
- self.tcp_port_in = 6303
- self.udp_port_in = 6304
- self.icmp_id_in = 6305
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # send some packets to create sessions
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture_ip4 = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture_ip4,
- nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture_ip6 = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture_ip6, ip[IPv6].src,
- self.pg0.remote_ip6)
-
- # in2out
- pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=ip[IPv6].src) /
- ICMPv6DestUnreach(code=1) /
- packet[IPv6] for packet in capture_ip6]
- 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[IP].src, self.nat_addr)
- self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
- self.assertEqual(packet[ICMP].type, 3)
- self.assertEqual(packet[ICMP].code, 13)
- inner = packet[IPerror]
- self.assertEqual(inner.src, self.pg1.remote_ip4)
- self.assertEqual(inner.dst, self.nat_addr)
- self.assert_packet_checksums_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].dport, self.tcp_port_out)
- elif inner.haslayer(UDPerror):
- self.assertEqual(inner[UDPerror].dport, self.udp_port_out)
- else:
- self.assertEqual(inner[ICMPerror].id, self.icmp_id_out)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # out2in
- pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- ICMP(type=3, code=13) /
- packet[IP] for packet in capture_ip4]
- 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, ip.src)
- self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
- icmp = packet[ICMPv6DestUnreach]
- self.assertEqual(icmp.code, 1)
- inner = icmp[IPerror6]
- self.assertEqual(inner.src, self.pg0.remote_ip6)
- self.assertEqual(inner.dst, ip.src)
- self.assert_icmpv6_checksum_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].sport, self.tcp_port_in)
- elif inner.haslayer(UDPerror):
- self.assertEqual(inner[UDPerror].sport, self.udp_port_in)
- else:
- self.assertEqual(inner[ICMPv6EchoRequest].id,
- self.icmp_id_in)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_hairpinning(self):
- """ NAT64 hairpinning """
-
- client = self.pg0.remote_hosts[0]
- server = self.pg0.remote_hosts[1]
- server_tcp_in_port = 22
- server_tcp_out_port = 4022
- server_udp_in_port = 23
- server_udp_out_port = 4023
- client_tcp_in_port = 1234
- client_udp_in_port = 1235
- client_tcp_out_port = 0
- client_udp_out_port = 0
- ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
- nat_addr_ip6 = ip.src
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_tcp_in_port,
- o_port=server_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_udp_in_port,
- o_port=server_udp_out_port,
- proto=IP_PROTOS.udp, vrf_id=0,
- is_add=1)
-
- # client to server
- pkts = []
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
- pkts.append(p)
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- UDP(sport=client_udp_in_port, dport=server_udp_out_port))
- pkts.append(p)
- self.pg0.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, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- self.assert_packet_checksums_valid(packet)
- if packet.haslayer(TCP):
- self.assertNotEqual(packet[TCP].sport, client_tcp_in_port)
- self.assertEqual(packet[TCP].dport, server_tcp_in_port)
- client_tcp_out_port = packet[TCP].sport
- else:
- self.assertNotEqual(packet[UDP].sport, client_udp_in_port)
- self.assertEqual(packet[UDP].dport, server_udp_in_port)
- client_udp_out_port = packet[UDP].sport
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # server to client
- pkts = []
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=nat_addr_ip6) /
- TCP(sport=server_tcp_in_port, dport=client_tcp_out_port))
- pkts.append(p)
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=nat_addr_ip6) /
- UDP(sport=server_udp_in_port, dport=client_udp_out_port))
- pkts.append(p)
- self.pg0.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, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, client.ip6)
- self.assert_packet_checksums_valid(packet)
- if packet.haslayer(TCP):
- self.assertEqual(packet[TCP].sport, server_tcp_out_port)
- self.assertEqual(packet[TCP].dport, client_tcp_in_port)
- else:
- self.assertEqual(packet[UDP].sport, server_udp_out_port)
- self.assertEqual(packet[UDP].dport, client_udp_in_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # ICMP error
- pkts = []
- pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- ICMPv6DestUnreach(code=1) /
- packet[IPv6] for packet in capture]
- self.pg0.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, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- icmp = packet[ICMPv6DestUnreach]
- self.assertEqual(icmp.code, 1)
- inner = icmp[IPerror6]
- self.assertEqual(inner.src, server.ip6)
- self.assertEqual(inner.dst, nat_addr_ip6)
- self.assert_packet_checksums_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].sport, server_tcp_in_port)
- self.assertEqual(inner[TCPerror].dport,
- client_tcp_out_port)
- else:
- self.assertEqual(inner[UDPerror].sport, server_udp_in_port)
- self.assertEqual(inner[UDPerror].dport,
- client_udp_out_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_prefix(self):
- """ NAT64 Network-Specific Prefix """
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
- end_addr=self.vrf1_nat_addr,
- vrf_id=self.vrf1_id, is_add=1)
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg2.sw_if_index)
-
- # Add global prefix
- global_pref64 = "2001:db8::"
- global_pref64_len = 32
- global_pref64_str = "{}/{}".format(global_pref64, global_pref64_len)
- self.vapi.nat64_add_del_prefix(prefix=global_pref64_str, vrf_id=0,
- is_add=1)
-
- prefix = self.vapi.nat64_prefix_dump()
- self.assertEqual(len(prefix), 1)
- self.assertEqual(str(prefix[0].prefix), global_pref64_str)
- self.assertEqual(prefix[0].vrf_id, 0)
-
- # Add tenant specific prefix
- vrf1_pref64 = "2001:db8:122:300::"
- vrf1_pref64_len = 56
- vrf1_pref64_str = "{}/{}".format(vrf1_pref64, vrf1_pref64_len)
- self.vapi.nat64_add_del_prefix(prefix=vrf1_pref64_str,
- vrf_id=self.vrf1_id, is_add=1)
-
- prefix = self.vapi.nat64_prefix_dump()
- self.assertEqual(len(prefix), 2)
-
- # Global prefix
- pkts = self.create_stream_in_ip6(self.pg0,
- self.pg1,
- pref=global_pref64,
- plen=global_pref64_len)
- 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.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- dst_ip = self.compose_ip6(self.pg1.remote_ip4,
- global_pref64,
- global_pref64_len)
- self.verify_capture_in_ip6(capture, dst_ip, self.pg0.remote_ip6)
-
- # Tenant specific prefix
- pkts = self.create_stream_in_ip6(self.pg2,
- self.pg1,
- pref=vrf1_pref64,
- plen=vrf1_pref64_len)
- self.pg2.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.vrf1_nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- dst_ip = self.compose_ip6(self.pg1.remote_ip4,
- vrf1_pref64,
- 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(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- 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.assertEqual(packet.haslayer(GRE), 1)
- self.assert_packet_checksums_valid(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_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(start_addr=server_nat_ip,
- end_addr=client_nat_ip,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=server_nat_ip,
- i_port=server_tcp_in_port,
- o_port=server_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=server_nat_ip, i_port=0,
- o_port=0,
- proto=IP_PROTOS.gre, vrf_id=0,
- is_add=1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=client.ip6n,
- o_addr=client_nat_ip,
- i_port=client_tcp_in_port,
- o_port=client_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- # 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 test_one_armed_nat64(self):
- """ One armed NAT64 """
- external_port = 0
- remote_host_ip6 = self.compose_ip6(self.pg3.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg3.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg3.sw_if_index)
-
- # in2out
- p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
- IPv6(src=self.pg3.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- self.pg3.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg3.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.src, self.nat_addr)
- self.assertEqual(ip.dst, self.pg3.remote_ip4)
- self.assertNotEqual(tcp.sport, 12345)
- external_port = tcp.sport
- self.assertEqual(tcp.dport, 80)
- self.assert_packet_checksums_valid(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- # out2in
- p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
- IP(src=self.pg3.remote_ip4, dst=self.nat_addr) /
- TCP(sport=80, dport=external_port))
- self.pg3.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg3.get_capture(1)
- p = capture[0]
- try:
- ip = p[IPv6]
- tcp = p[TCP]
- self.assertEqual(ip.src, remote_host_ip6)
- self.assertEqual(ip.dst, self.pg3.remote_ip6)
- self.assertEqual(tcp.sport, 80)
- self.assertEqual(tcp.dport, 12345)
- self.assert_packet_checksums_valid(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- def test_frag_in_order(self):
- """ NAT64 translate fragments arriving in order """
- self.tcp_port_in = random.randint(1025, 65535)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- data = b'a' * 200
- pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
- self.tcp_port_in, 20, data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
-
- # out2in
- data = b"A" * 4 + b"b" * 16 + b"C" * 3
- pkts = self.create_stream_frag(self.pg1,
- self.nat_addr,
- 20,
- self.tcp_port_out,
- data)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- self.logger.debug(ppc("Captured:", frags))
- src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
- p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
-
- def test_reass_hairpinning(self):
- """ NAT64 fragments hairpinning """
- data = b'a' * 200
- server = self.pg0.remote_hosts[1]
- server_in_port = random.randint(1025, 65535)
- server_out_port = random.randint(1025, 65535)
- client_in_port = random.randint(1025, 65535)
- ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
- nat_addr_ip6 = ip.src
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # add static BIB entry for server
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_in_port,
- o_port=server_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- # send packet from host to server
- pkts = self.create_stream_frag_ip6(self.pg0,
- self.nat_addr,
- client_in_port,
- server_out_port,
- data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- self.logger.debug(ppc("Captured:", frags))
- p = self.reass_frags_and_verify_ip6(frags, nat_addr_ip6, server.ip6)
- self.assertNotEqual(p[TCP].sport, client_in_port)
- self.assertEqual(p[TCP].dport, server_in_port)
- self.assertEqual(data, p[Raw].load)
-
- def test_frag_out_of_order(self):
- """ NAT64 translate fragments arriving out of order """
- self.tcp_port_in = random.randint(1025, 65535)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- data = b'a' * 200
- pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
- self.tcp_port_in, 20, data)
- pkts.reverse()
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
-
- # out2in
- data = b"A" * 4 + b"B" * 16 + b"C" * 3
- pkts = self.create_stream_frag(self.pg1,
- 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))
- src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
- p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
-
- def test_interface_addr(self):
- """ Acquire NAT64 pool addresses from interface """
- self.vapi.nat64_add_del_interface_addr(
- is_add=1,
- sw_if_index=self.pg4.sw_if_index)
-
- # no address in NAT64 pool
- addresses = self.vapi.nat44_address_dump()
- self.assertEqual(0, len(addresses))
-
- # configure interface address and check NAT64 address pool
- self.pg4.config_ip4()
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 1)
-
- self.assertEqual(str(addresses[0].address),
- self.pg4.local_ip4)
-
- # remove interface address and check NAT64 address pool
- self.pg4.unconfig_ip4()
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(0, len(addresses))
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_ipfix_max_bibs_sessions(self):
- """ IPFIX logging maximum session and BIB entries exceeded """
- max_bibs = 1280
- max_sessions = 2560
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- pkts = []
- src = ""
- for i in range(0, max_bibs):
- src = "fd01:aa::%x" % (i)
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- pkts.append(p)
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=22))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(max_sessions)
-
- self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
- src_address=self.pg3.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=1)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=25))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(7)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_sessions(data, max_sessions)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(1)
- # verify events in data set
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_bibs(data, max_bibs)
-
- def test_ipfix_bib_ses(self):
- """ IPFIX logging NAT64 BIB/session create and delete events """
- self.tcp_port_in = random.randint(1025, 65535)
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
- src_address=self.pg3.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=1)
-
- # Create
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=self.tcp_port_in, dport=25))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- self.tcp_port_out = p[0][TCP].sport
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(8)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- if scapy.compat.orb(data[0][230]) == 10:
- self.verify_ipfix_bib(data, 1, self.pg0.remote_ip6)
- elif scapy.compat.orb(data[0][230]) == 6:
- self.verify_ipfix_nat64_ses(data,
- 1,
- self.pg0.remote_ip6,
- self.pg1.remote_ip4,
- 25)
- else:
- self.logger.error(ppp("Unexpected or invalid packet: ", p))
-
- # Delete
- self.pg_enable_capture(self.pg_interfaces)
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=0)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(2)
- # verify events in data set
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- if scapy.compat.orb(data[0][230]) == 11:
- self.verify_ipfix_bib(data, 0, self.pg0.remote_ip6)
- elif scapy.compat.orb(data[0][230]) == 7:
- self.verify_ipfix_nat64_ses(data,
- 0,
- self.pg0.remote_ip6,
- self.pg1.remote_ip4,
- 25)
- else:
- self.logger.error(ppp("Unexpected or invalid packet: ", p))
-
- def test_syslog_sess(self):
- """ Test syslog session creation and deletion """
- self.tcp_port_in = random.randint(1025, 65535)
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.syslog_set_filter(
- self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_INFO)
- self.vapi.syslog_set_sender(self.pg3.local_ip4, self.pg3.remote_ip4)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- self.tcp_port_out = p[0][TCP].sport
- capture = self.pg3.get_capture(1)
- self.verify_syslog_sess(capture[0][Raw].load, is_ip6=True)
-
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=0)
- capture = self.pg3.get_capture(1)
- self.verify_syslog_sess(capture[0][Raw].load, False, True)
-
- def nat64_get_ses_num(self):
- """
- Return number of active NAT64 sessions.
- """
- st = self.vapi.nat64_st_dump(proto=255)
- return len(st)
-
- def clear_nat64(self):
- """
- Clear NAT64 configuration.
- """
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=0)
- self.ipfix_src_port = 4739
- self.ipfix_domain_id = 1
-
- self.vapi.syslog_set_filter(
- self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_EMERG)
-
- self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
- tcp_transitory=240, icmp=60)
-
- interfaces = self.vapi.nat64_interface_dump()
- for intf in interfaces:
- self.vapi.nat64_add_del_interface(is_add=0, flags=intf.flags,
- sw_if_index=intf.sw_if_index)
-
- bib = self.vapi.nat64_bib_dump(proto=255)
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- self.vapi.nat64_add_del_static_bib(i_addr=bibe.i_addr,
- o_addr=bibe.o_addr,
- i_port=bibe.i_port,
- o_port=bibe.o_port,
- proto=bibe.proto,
- vrf_id=bibe.vrf_id,
- is_add=0)
-
- adresses = self.vapi.nat64_pool_addr_dump()
- for addr in adresses:
- self.vapi.nat64_add_del_pool_addr_range(start_addr=addr.address,
- end_addr=addr.address,
- vrf_id=addr.vrf_id,
- is_add=0)
-
- prefixes = self.vapi.nat64_prefix_dump()
- for prefix in prefixes:
- self.vapi.nat64_add_del_prefix(prefix=str(prefix.prefix),
- vrf_id=prefix.vrf_id, is_add=0)
-
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 0)
- sessions = self.statistics.get_counter('/nat64/total-sessions')
- self.assertEqual(sessions[0][0], 0)
-
- def tearDown(self):
- super(TestNAT64, self).tearDown()
- if not self.vpp_dead:
- self.clear_nat64()
-
- def show_commands_at_teardown(self):
- self.logger.info(self.vapi.cli("show nat64 pool"))
- self.logger.info(self.vapi.cli("show nat64 interfaces"))
- self.logger.info(self.vapi.cli("show nat64 prefix"))
- self.logger.info(self.vapi.cli("show nat64 bib all"))
- self.logger.info(self.vapi.cli("show nat64 session table all"))
-
-
-class TestNAT66(MethodHolder):
- """ NAT66 Test Cases """
-
- @classmethod
- def setUpClass(cls):
- super(TestNAT66, cls).setUpClass()
-
- cls.nat_addr = 'fd01:ff::2'
-
- 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()
-
- @classmethod
- def tearDownClass(cls):
- super(TestNAT66, cls).tearDownClass()
-
- def test_static(self):
- """ 1:1 NAT66 test """
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat66_add_del_interface(is_add=1,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat66_add_del_static_mapping(
- local_ip_address=self.pg0.remote_ip6,
- external_ip_address=self.nat_addr,
- is_add=1)
-
- # 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)
- self.assert_packet_checksums_valid(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)
- self.assert_packet_checksums_valid(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 """
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat66_add_del_static_mapping(
- local_ip_address=self.pg0.remote_ip6,
- external_ip_address=self.nat_addr,
- is_add=1)
-
- # 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(is_add=0, flags=intf.flags,
- sw_if_index=intf.sw_if_index)
-
- static_mappings = self.vapi.nat66_static_mapping_dump()
- for sm in static_mappings:
- self.vapi.nat66_add_del_static_mapping(
- local_ip_address=sm.local_ip_address,
- external_ip_address=sm.external_ip_address, vrf_id=sm.vrf_id,
- is_add=0)
-
- def tearDown(self):
- super(TestNAT66, self).tearDown()
- self.clear_nat66()
-
- def show_commands_at_teardown(self):
- self.logger.info(self.vapi.cli("show nat66 interfaces"))
- self.logger.info(self.vapi.cli("show nat66 static mappings"))
-
-
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff