-#!/usr/bin/env python
+#!/usr/bin/env python3
import socket
import unittest
from vpp_papi import VppEnum
from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathType
from vpp_neighbor import VppNeighbor
-from vpp_ip import VppIpAddress, VppIpPrefix
from scapy.all import bind_layers, Packet, ByteEnumField, ShortField, \
IPField, IntField, LongField, XByteField, FlagsField, FieldLenField, \
PacketListField
from ipaddress import IPv6Network
+from util import ppc, ppp
+from socket import inet_pton, AF_INET
+from vpp_acl import AclRule, VppAcl, VppAclInterface
# NAT HA protocol event data
last_ip_address=addr.ip_address,
vrf_id=0xFFFFFFFF, flags=addr.flags)
- self.vapi.nat_set_reass(timeout=2, max_reass=1024, max_frag=5,
- drop_frag=0)
- self.vapi.nat_set_reass(timeout=2, max_reass=1024, max_frag=5,
- drop_frag=0, is_ip6=1)
self.verify_no_nat44_user()
self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
tcp_transitory=240, icmp=60)
proto=frags[0][IP].proto)
if ip.proto == IP_PROTOS.tcp:
p = (ip / TCP(buffer.getvalue()))
+ self.logger.debug(ppp("Reassembled:", p))
self.assert_tcp_checksum_valid(p)
elif ip.proto == IP_PROTOS.udp:
p = (ip / UDP(buffer.getvalue()[:8]) /
p = (ip / TCP(buffer.getvalue()))
elif ip.nh == IP_PROTOS.udp:
p = (ip / UDP(buffer.getvalue()))
+ self.logger.debug(ppp("Reassembled:", p))
self.assert_packet_checksums_valid(p)
return p
data = b"A" * 16 + b"B" * 16 + b"C" * 3
self.port_in = random.randint(1025, 65535)
- reass = self.vapi.nat_reass_dump()
- reass_n_start = len(reass)
-
# in2out
- pkts = self.create_stream_frag(self.pg0,
- self.pg1.remote_ip4,
- self.port_in,
- 20,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+ self.port_in, 20, data, proto)
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
else:
sport = p[layer].id
dport = 0
- pkts = self.create_stream_frag(self.pg1,
- dst_addr,
- sport,
- dport,
- data,
- proto,
- echo_reply=True)
+ pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport, data,
+ proto, echo_reply=True)
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.assertEqual(p[layer].id, self.port_in)
self.assertEqual(data, p[Raw].load)
- reass = self.vapi.nat_reass_dump()
- reass_n_end = len(reass)
-
- self.assertEqual(reass_n_end - reass_n_start, 2)
-
def frag_in_order_in_plus_out(self, proto=IP_PROTOS.tcp):
layer = self.proto2layer(proto)
self.port_in = random.randint(1025, 65535)
for i in range(2):
- reass = self.vapi.nat_reass_dump()
- reass_n_start = len(reass)
-
# out2in
- pkts = self.create_stream_frag(self.pg0,
- self.server_out_addr,
- self.port_in,
- self.server_out_port,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.server_out_addr,
+ self.port_in, self.server_out_port,
+ data, proto)
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# in2out
if proto != IP_PROTOS.icmp:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
self.server_in_port,
- p[layer].sport,
- data,
- proto)
+ p[layer].sport, data, proto)
else:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
- p[layer].id,
- 0,
- data,
- proto,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+ p[layer].id, 0, data, proto,
echo_reply=True)
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.assertEqual(p[layer].id, self.port_in)
self.assertEqual(data, p[Raw].load)
- reass = self.vapi.nat_reass_dump()
- reass_n_end = len(reass)
-
- self.assertEqual(reass_n_end - reass_n_start, 2)
-
def reass_hairpinning(self, proto=IP_PROTOS.tcp):
layer = self.proto2layer(proto)
for i in range(2):
# in2out
- pkts = self.create_stream_frag(self.pg0,
- self.pg1.remote_ip4,
- self.port_in,
- 20,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+ self.port_in, 20, data, proto)
pkts.reverse()
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
else:
sport = p[layer].id
dport = 0
- pkts = self.create_stream_frag(self.pg1,
- dst_addr,
- sport,
- dport,
- data,
- proto,
- echo_reply=True)
+ pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport,
+ data, proto, echo_reply=True)
pkts.reverse()
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
for i in range(2):
# out2in
- pkts = self.create_stream_frag(self.pg0,
- self.server_out_addr,
- self.port_in,
- self.server_out_port,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.server_out_addr,
+ self.port_in, self.server_out_port,
+ data, proto)
pkts.reverse()
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
# in2out
if proto != IP_PROTOS.icmp:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
self.server_in_port,
- p[layer].sport,
- data,
- proto)
+ p[layer].sport, data, proto)
else:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
- p[layer].id,
- 0,
- data,
- proto,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+ p[layer].id, 0, data, proto,
echo_reply=True)
pkts.reverse()
self.pg1.add_stream(pkts)
super(TestNAT44, cls).setUpClass()
cls.vapi.cli("set log class nat level debug")
- try:
- cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
- cls.udp_port_in = 6304
- cls.udp_port_out = 6304
- cls.icmp_id_in = 6305
- cls.icmp_id_out = 6305
- cls.nat_addr = '10.0.0.3'
- cls.ipfix_src_port = 4739
- cls.ipfix_domain_id = 1
- cls.tcp_external_port = 80
- cls.udp_external_port = 69
-
- cls.create_pg_interfaces(range(10))
- cls.interfaces = list(cls.pg_interfaces[0:4])
-
- for i in cls.interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
-
- cls.pg0.generate_remote_hosts(3)
- cls.pg0.configure_ipv4_neighbors()
-
- cls.pg1.generate_remote_hosts(1)
- cls.pg1.configure_ipv4_neighbors()
-
- cls.overlapping_interfaces = list(list(cls.pg_interfaces[4:7]))
- cls.vapi.ip_table_add_del(is_add=1, table_id=10)
- cls.vapi.ip_table_add_del(is_add=1, table_id=20)
-
- cls.pg4._local_ip4 = VppIpPrefix("172.16.255.1",
- cls.pg4.local_ip4_prefix.len)
- cls.pg4._remote_hosts[0]._ip4 = "172.16.255.2"
- cls.pg4.set_table_ip4(10)
- cls.pg5._local_ip4 = VppIpPrefix("172.17.255.3",
- cls.pg5.local_ip4_prefix.len)
- cls.pg5._remote_hosts[0]._ip4 = "172.17.255.4"
- cls.pg5.set_table_ip4(10)
- cls.pg6._local_ip4 = VppIpPrefix("172.16.255.1",
- cls.pg6.local_ip4_prefix.len)
- cls.pg6._remote_hosts[0]._ip4 = "172.16.255.2"
- cls.pg6.set_table_ip4(20)
- for i in cls.overlapping_interfaces:
- i.config_ip4()
- i.admin_up()
- i.resolve_arp()
-
- cls.pg7.admin_up()
- cls.pg8.admin_up()
-
- cls.pg9.generate_remote_hosts(2)
- cls.pg9.config_ip4()
- cls.vapi.sw_interface_add_del_address(
- sw_if_index=cls.pg9.sw_if_index,
- prefix=VppIpPrefix("10.0.0.1", 24).encode())
-
- cls.pg9.admin_up()
- cls.pg9.resolve_arp()
- cls.pg9._remote_hosts[1]._ip4 = cls.pg9._remote_hosts[0]._ip4
- cls.pg4._remote_ip4 = cls.pg9._remote_hosts[0]._ip4 = "10.0.0.2"
- cls.pg9.resolve_arp()
-
- except Exception:
- super(TestNAT44, cls).tearDownClass()
- raise
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.nat_addr = '10.0.0.3'
+ cls.ipfix_src_port = 4739
+ cls.ipfix_domain_id = 1
+ cls.tcp_external_port = 80
+ cls.udp_external_port = 69
+
+ cls.create_pg_interfaces(range(10))
+ cls.interfaces = list(cls.pg_interfaces[0:4])
+
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ cls.pg0.generate_remote_hosts(3)
+ cls.pg0.configure_ipv4_neighbors()
+
+ cls.pg1.generate_remote_hosts(1)
+ cls.pg1.configure_ipv4_neighbors()
+
+ cls.overlapping_interfaces = list(list(cls.pg_interfaces[4:7]))
+ cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 10})
+ cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 20})
+
+ cls.pg4._local_ip4 = "172.16.255.1"
+ cls.pg4._remote_hosts[0]._ip4 = "172.16.255.2"
+ cls.pg4.set_table_ip4(10)
+ cls.pg5._local_ip4 = "172.17.255.3"
+ cls.pg5._remote_hosts[0]._ip4 = "172.17.255.4"
+ cls.pg5.set_table_ip4(10)
+ cls.pg6._local_ip4 = "172.16.255.1"
+ cls.pg6._remote_hosts[0]._ip4 = "172.16.255.2"
+ cls.pg6.set_table_ip4(20)
+ for i in cls.overlapping_interfaces:
+ i.config_ip4()
+ i.admin_up()
+ i.resolve_arp()
+
+ cls.pg7.admin_up()
+ cls.pg8.admin_up()
+
+ cls.pg9.generate_remote_hosts(2)
+ cls.pg9.config_ip4()
+ cls.vapi.sw_interface_add_del_address(
+ sw_if_index=cls.pg9.sw_if_index,
+ prefix="10.0.0.1/24")
+
+ cls.pg9.admin_up()
+ cls.pg9.resolve_arp()
+ cls.pg9._remote_hosts[1]._ip4 = cls.pg9._remote_hosts[0]._ip4
+ cls.pg4._remote_ip4 = cls.pg9._remote_hosts[0]._ip4 = "10.0.0.2"
+ cls.pg9.resolve_arp()
@classmethod
def tearDownClass(cls):
self.logger.error(ppp("Unexpected or invalid packet:", packet))
raise
- def test_max_translations_per_user(self):
- """ MAX translations per user - recycle the least recently used """
-
- 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)
-
- # get maximum number of translations per user
- nat44_config = self.vapi.nat_show_config()
-
- # send more than maximum number of translations per user packets
- pkts_num = nat44_config.max_translations_per_user + 5
- pkts = []
- for port in range(0, pkts_num):
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=1025 + port))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # verify number of translated packet
- self.pg1.get_capture(pkts_num)
-
- users = self.vapi.nat44_user_dump()
- for user in users:
- if user.ip_address == self.pg0.remote_ip4:
- self.assertEqual(user.nsessions,
- nat44_config.max_translations_per_user)
- self.assertEqual(user.nstaticsessions, 0)
-
- tcp_port = 22
- self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
- tcp_port, tcp_port,
- proto=IP_PROTOS.tcp)
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=tcp_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(1)
- users = self.vapi.nat44_user_dump()
- for user in users:
- if user.ip_address == self.pg0.remote_ip4:
- self.assertEqual(user.nsessions,
- nat44_config.max_translations_per_user - 1)
- self.assertEqual(user.nstaticsessions, 1)
-
def test_interface_addr(self):
""" Acquire NAT44 addresses from interface """
self.vapi.nat44_add_del_interface_addr(
self.pg0.unconfig_ip4()
self.pg1.unconfig_ip4()
- self.vapi.ip_table_add_del(is_add=1, table_id=vrf_id1)
- self.vapi.ip_table_add_del(is_add=1, table_id=vrf_id2)
+ self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id1})
+ self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id2})
self.pg0.set_table_ip4(vrf_id1)
self.pg1.set_table_ip4(vrf_id2)
self.pg0.config_ip4()
self.pg1.config_ip4()
self.pg0.resolve_arp()
self.pg1.resolve_arp()
- self.vapi.ip_table_add_del(is_add=0, table_id=vrf_id1)
- self.vapi.ip_table_add_del(is_add=0, table_id=vrf_id2)
+ self.vapi.ip_table_add_del(is_add=0, table={'table_id': vrf_id1})
+ self.vapi.ip_table_add_del(is_add=0, table={'table_id': vrf_id2})
def test_vrf_feature_independent(self):
""" NAT44 tenant VRF independent address pool mode """
self.verify_no_nat44_user()
- def test_set_get_reass(self):
- """ NAT44 set/get virtual fragmentation reassembly """
- reas_cfg1 = self.vapi.nat_get_reass()
-
- self.vapi.nat_set_reass(timeout=reas_cfg1.ip4_timeout + 5,
- max_reass=reas_cfg1.ip4_max_reass * 2,
- max_frag=reas_cfg1.ip4_max_frag * 2,
- drop_frag=0)
-
- reas_cfg2 = self.vapi.nat_get_reass()
-
- self.assertEqual(reas_cfg1.ip4_timeout + 5, reas_cfg2.ip4_timeout)
- self.assertEqual(reas_cfg1.ip4_max_reass * 2, reas_cfg2.ip4_max_reass)
- self.assertEqual(reas_cfg1.ip4_max_frag * 2, reas_cfg2.ip4_max_frag)
-
- self.vapi.nat_set_reass(timeout=2, max_reass=1024, max_frag=5,
- drop_frag=1)
- self.assertTrue(self.vapi.nat_get_reass().ip4_drop_frag)
-
def test_frag_in_order(self):
""" NAT44 translate fragments arriving in order """
sw_if_index=self.pg1.sw_if_index,
is_add=1)
- reas_cfg1 = self.vapi.nat_get_reass()
- # this test was intermittently failing in some cases
- # until we temporarily bump the reassembly timeouts
- self.vapi.nat_set_reass(timeout=20, max_reass=1024, max_frag=5,
- drop_frag=0)
-
self.frag_in_order(proto=IP_PROTOS.tcp)
self.frag_in_order(proto=IP_PROTOS.udp)
self.frag_in_order(proto=IP_PROTOS.icmp)
- # restore the reassembly timeouts
- self.vapi.nat_set_reass(timeout=reas_cfg1.ip4_timeout,
- max_reass=reas_cfg1.ip4_max_reass,
- max_frag=reas_cfg1.ip4_max_frag,
- drop_frag=reas_cfg1.ip4_drop_frag)
-
def test_frag_forwarding(self):
""" NAT44 forwarding fragment test """
self.vapi.nat44_add_del_interface_addr(
self.assertGreaterEqual(tcp.sport, 1025)
self.assertLessEqual(tcp.sport, 1027)
- def test_ipfix_max_frags(self):
- """ IPFIX logging maximum fragments pending reassembly exceeded """
- 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)
- self.vapi.nat_set_reass(timeout=2, max_reass=1024, max_frag=1,
- drop_frag=0)
- 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)
-
- data = b"A" * 4 + b"B" * 16 + b"C" * 3
- self.tcp_port_in = random.randint(1025, 65535)
- pkts = self.create_stream_frag(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()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(9)
- 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_fragments_ip4(data, 1,
- self.pg0.remote_ip4n)
-
def test_multiple_outside_vrf(self):
""" Multiple outside VRF """
vrf_id1 = 1
self.pg1.unconfig_ip4()
self.pg2.unconfig_ip4()
- self.vapi.ip_table_add_del(is_add=1, table_id=vrf_id1)
- self.vapi.ip_table_add_del(is_add=1, table_id=vrf_id2)
+ self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id1})
+ self.vapi.ip_table_add_del(is_add=1, table={'table_id': vrf_id2})
self.pg1.set_table_ip4(vrf_id1)
self.pg2.set_table_ip4(vrf_id2)
self.pg1.config_ip4()
self.logger.info(self.vapi.cli("show nat44 static mappings"))
self.logger.info(self.vapi.cli("show nat44 interface address"))
self.logger.info(self.vapi.cli("show nat44 sessions detail"))
- self.logger.info(self.vapi.cli("show nat virtual-reassembly"))
self.logger.info(self.vapi.cli("show nat44 hash tables detail"))
self.logger.info(self.vapi.cli("show nat timeouts"))
self.logger.info(
self.logger.info(self.vapi.cli("show nat ha"))
+class TestNAT44EndpointDependent2(MethodHolder):
+ """ Endpoint-Dependent session test cases """
+
+ icmp_timeout = 2
+
+ @classmethod
+ def setUpConstants(cls):
+ super(TestNAT44EndpointDependent2, cls).setUpConstants()
+ cls.vpp_cmdline.extend(["nat", "{", "endpoint-dependent",
+ "translation", "hash", "buckets", "1",
+ "icmp", "timeout", str(cls.icmp_timeout), "}"])
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestNAT44EndpointDependent2, cls).setUpClass()
+ translation_buckets = 1
+ cls.max_translations = 10 * translation_buckets
+
+ cls.create_pg_interfaces(range(2))
+ cls.interfaces = list(cls.pg_interfaces[0:2])
+
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ cls.pg0.generate_remote_hosts(1)
+ cls.pg0.configure_ipv4_neighbors()
+
+ cls.pg1.generate_remote_hosts(1)
+ cls.pg1.configure_ipv4_neighbors()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestNAT44EndpointDependent2, cls).tearDownClass()
+
+ def create_icmp_stream(self, in_if, out_if, count):
+ """
+ Create ICMP packet stream for inside network
+
+ :param in_if: Inside interface
+ :param out_if: Outside interface
+ :param count: Number of packets
+ """
+
+ self.assertTrue(count > 0)
+ icmp_id = random.randint(0, 65535 - (count - 1))
+
+ pkts = list()
+ for i in range(count):
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=64) /
+ ICMP(id=icmp_id + i, type='echo-request'))
+ pkts.append(p)
+ return pkts
+
+ def send_pkts(self, pkts, expected=None):
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ return self.pg1.get_capture(
+ len(pkts) if expected is None else expected)
+
+ def test_session_cleanup(self):
+ """ NAT44 session cleanup test """
+
+ self.nat44_add_address(self.pg1.local_ip4)
+ 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)
+
+ pkts = self.create_icmp_stream(self.pg0, self.pg1,
+ self.max_translations + 2)
+ sz = len(pkts)
+
+ # positive test
+ self.send_pkts(pkts[0:self.max_translations])
+
+ # false positive test
+ self.send_pkts(pkts[self.max_translations:sz - 1], 0)
+
+ sleep(self.icmp_timeout)
+
+ # positive test
+ self.send_pkts(pkts[self.max_translations + 1:sz])
+
+
class TestNAT44EndpointDependent(MethodHolder):
""" Endpoint-Dependent mapping and filtering test cases """
def setUpClass(cls):
super(TestNAT44EndpointDependent, cls).setUpClass()
cls.vapi.cli("set log class nat level debug")
- try:
- cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
- cls.udp_port_in = 6304
- cls.udp_port_out = 6304
- cls.icmp_id_in = 6305
- cls.icmp_id_out = 6305
- cls.nat_addr = '10.0.0.3'
- cls.ipfix_src_port = 4739
- cls.ipfix_domain_id = 1
- cls.tcp_external_port = 80
-
- cls.create_pg_interfaces(range(9))
- cls.interfaces = list(cls.pg_interfaces[0:3])
-
- for i in cls.interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
-
- cls.pg0.generate_remote_hosts(3)
- cls.pg0.configure_ipv4_neighbors()
-
- cls.pg3.admin_up()
-
- cls.pg4.generate_remote_hosts(2)
- cls.pg4.config_ip4()
- cls.vapi.sw_interface_add_del_address(
- sw_if_index=cls.pg4.sw_if_index,
- prefix=VppIpPrefix("10.0.0.1", 24).encode())
-
- cls.pg4.admin_up()
- cls.pg4.resolve_arp()
- cls.pg4._remote_hosts[1]._ip4 = cls.pg4._remote_hosts[0]._ip4
- cls.pg4.resolve_arp()
-
- zero_ip4 = socket.inet_pton(socket.AF_INET, "0.0.0.0")
- cls.vapi.ip_table_add_del(is_add=1, table_id=1)
-
- cls.pg5._local_ip4 = VppIpPrefix("10.1.1.1",
- cls.pg5.local_ip4_prefix.len)
- cls.pg5._remote_hosts[0]._ip4 = "10.1.1.2"
- cls.pg5.set_table_ip4(1)
- cls.pg5.config_ip4()
- cls.pg5.admin_up()
- r1 = VppIpRoute(cls, cls.pg5.remote_ip4, 32,
- [VppRoutePath("0.0.0.0",
- cls.pg5.sw_if_index)],
- table_id=1,
- register=False)
- r1.add_vpp_config()
-
- cls.pg6._local_ip4 = VppIpPrefix("10.1.2.1",
- cls.pg6.local_ip4_prefix.len)
- cls.pg6._remote_hosts[0]._ip4 = "10.1.2.2"
- cls.pg6.set_table_ip4(1)
- cls.pg6.config_ip4()
- cls.pg6.admin_up()
-
- r2 = VppIpRoute(cls, cls.pg6.remote_ip4, 32,
- [VppRoutePath("0.0.0.0",
- cls.pg6.sw_if_index)],
- table_id=1,
- register=False)
- r3 = VppIpRoute(cls, cls.pg6.remote_ip4, 16,
- [VppRoutePath("0.0.0.0",
- 0xffffffff,
- nh_table_id=1)],
- table_id=0,
- register=False)
- r4 = VppIpRoute(cls, "0.0.0.0", 0,
- [VppRoutePath("0.0.0.0", 0xffffffff,
- nh_table_id=0)],
- table_id=1,
- register=False)
- r5 = VppIpRoute(cls, "0.0.0.0", 0,
- [VppRoutePath(cls.pg1.local_ip4,
- cls.pg1.sw_if_index)],
- register=False)
- r2.add_vpp_config()
- r3.add_vpp_config()
- r4.add_vpp_config()
- r5.add_vpp_config()
-
- cls.pg5.resolve_arp()
- cls.pg6.resolve_arp()
-
- cls.pg7.admin_up()
- cls.pg7.config_ip4()
- cls.pg7.resolve_arp()
- cls.pg7.generate_remote_hosts(3)
- cls.pg7.configure_ipv4_neighbors()
-
- cls.pg8.admin_up()
- cls.pg8.config_ip4()
- cls.pg8.resolve_arp()
-
- except Exception:
- super(TestNAT44EndpointDependent, cls).tearDownClass()
- raise
+
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.nat_addr = '10.0.0.3'
+ cls.ipfix_src_port = 4739
+ cls.ipfix_domain_id = 1
+ cls.tcp_external_port = 80
+
+ cls.create_pg_interfaces(range(9))
+ cls.interfaces = list(cls.pg_interfaces[0:3])
+
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ cls.pg0.generate_remote_hosts(3)
+ cls.pg0.configure_ipv4_neighbors()
+
+ cls.pg3.admin_up()
+
+ cls.pg4.generate_remote_hosts(2)
+ cls.pg4.config_ip4()
+ cls.vapi.sw_interface_add_del_address(
+ sw_if_index=cls.pg4.sw_if_index,
+ prefix="10.0.0.1/24")
+
+ cls.pg4.admin_up()
+ cls.pg4.resolve_arp()
+ cls.pg4._remote_hosts[1]._ip4 = cls.pg4._remote_hosts[0]._ip4
+ cls.pg4.resolve_arp()
+
+ zero_ip4 = socket.inet_pton(socket.AF_INET, "0.0.0.0")
+ cls.vapi.ip_table_add_del(is_add=1, table={'table_id': 1})
+
+ cls.pg5._local_ip4 = "10.1.1.1"
+ cls.pg5._remote_hosts[0]._ip4 = "10.1.1.2"
+ cls.pg5.set_table_ip4(1)
+ cls.pg5.config_ip4()
+ cls.pg5.admin_up()
+ r1 = VppIpRoute(cls, cls.pg5.remote_ip4, 32,
+ [VppRoutePath("0.0.0.0",
+ cls.pg5.sw_if_index)],
+ table_id=1,
+ register=False)
+ r1.add_vpp_config()
+
+ cls.pg6._local_ip4 = "10.1.2.1"
+ cls.pg6._remote_hosts[0]._ip4 = "10.1.2.2"
+ cls.pg6.set_table_ip4(1)
+ cls.pg6.config_ip4()
+ cls.pg6.admin_up()
+
+ r2 = VppIpRoute(cls, cls.pg6.remote_ip4, 32,
+ [VppRoutePath("0.0.0.0",
+ cls.pg6.sw_if_index)],
+ table_id=1,
+ register=False)
+ r3 = VppIpRoute(cls, cls.pg6.remote_ip4, 16,
+ [VppRoutePath("0.0.0.0",
+ 0xffffffff,
+ nh_table_id=1)],
+ table_id=0,
+ register=False)
+ r4 = VppIpRoute(cls, "0.0.0.0", 0,
+ [VppRoutePath("0.0.0.0", 0xffffffff,
+ nh_table_id=0)],
+ table_id=1,
+ register=False)
+ r5 = VppIpRoute(cls, "0.0.0.0", 0,
+ [VppRoutePath(cls.pg1.local_ip4,
+ cls.pg1.sw_if_index)],
+ register=False)
+ r2.add_vpp_config()
+ r3.add_vpp_config()
+ r4.add_vpp_config()
+ r5.add_vpp_config()
+
+ cls.pg5.resolve_arp()
+ cls.pg6.resolve_arp()
+
+ cls.pg7.admin_up()
+ cls.pg7.config_ip4()
+ cls.pg7.resolve_arp()
+ cls.pg7.generate_remote_hosts(3)
+ cls.pg7.configure_ipv4_neighbors()
+
+ cls.pg8.admin_up()
+ cls.pg8.config_ip4()
+ cls.pg8.resolve_arp()
+
+ def setUp(self):
+ super(TestNAT44EndpointDependent, self).setUp()
+ self.vapi.nat_set_timeouts(
+ udp=300, tcp_established=7440, tcp_transitory=240, icmp=60)
@classmethod
def tearDownClass(cls):
sw_if_index=self.pg1.sw_if_index,
is_add=1)
self.vapi.nat44_forwarding_enable_disable(enable=True)
- reas_cfg1 = self.vapi.nat_get_reass()
- # this test was intermittently failing in some cases
- # until we temporarily bump the reassembly timeouts
- self.vapi.nat_set_reass(timeout=20, max_reass=1024, max_frag=5,
- drop_frag=0)
self.frag_in_order(proto=IP_PROTOS.tcp, dont_translate=True)
- # restore the reassembly timeouts
- self.vapi.nat_set_reass(timeout=reas_cfg1.ip4_timeout,
- max_reass=reas_cfg1.ip4_max_reass,
- max_frag=reas_cfg1.ip4_max_frag,
- drop_frag=reas_cfg1.ip4_drop_frag)
def test_frag_out_of_order(self):
""" NAT44 translate fragments arriving out of order """
self.server_out_addr,
proto=IP_PROTOS.icmp)
- self.vapi.nat_set_reass(timeout=10, max_reass=1024, max_frag=5,
- drop_frag=0)
-
self.frag_in_order_in_plus_out(proto=IP_PROTOS.tcp)
self.frag_in_order_in_plus_out(proto=IP_PROTOS.udp)
self.frag_in_order_in_plus_out(proto=IP_PROTOS.icmp)
self.server_out_addr,
proto=IP_PROTOS.icmp)
- self.vapi.nat_set_reass(timeout=10, max_reass=1024, max_frag=5,
- drop_frag=0)
-
self.frag_out_of_order_in_plus_out(proto=IP_PROTOS.tcp)
self.frag_out_of_order_in_plus_out(proto=IP_PROTOS.udp)
self.frag_out_of_order_in_plus_out(proto=IP_PROTOS.icmp)
is_add=1)
try:
- self.vapi.ip_table_add_del(is_add=1, table_id=new_vrf_id)
+ self.vapi.ip_table_add_del(is_add=1,
+ table={'table_id': new_vrf_id})
self.pg7.unconfig_ip4()
self.pg7.set_table_ip4(new_vrf_id)
self.pg8.config_ip4()
self.pg8.resolve_arp()
- self.vapi.ip_table_add_del(is_add=0, table_id=new_vrf_id)
+ self.vapi.ip_table_add_del(is_add=0,
+ table={'table_id': new_vrf_id})
def test_forwarding(self):
""" NAT44 forwarding test """
sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
start_sessnum = len(sessions)
+ self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+ tcp_transitory=2, icmp=5)
+
self.initiate_tcp_session(self.pg0, self.pg1)
# FIN packet in -> out
self.pg_start()
self.pg1.get_capture(1)
- sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4,
- 0)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 1)
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ out2in_drops = stats[0]
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ in2out_drops = stats[0]
+
+ # extra FIN packet out -> in - this should be dropped
+ 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="FA", seq=300, ack=101))
+
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.assert_nothing_captured()
+
+ # extra ACK packet in -> out - this should be dropped
+ 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", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - out2in_drops, 1)
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - in2out_drops, 1)
+
+ self.sleep(3)
+ # extra ACK packet in -> out - this will cause session to be wiped
+ 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", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
self.assertEqual(len(sessions) - start_sessnum, 0)
def test_tcp_session_close_out(self):
sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
start_sessnum = len(sessions)
+ self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+ tcp_transitory=2, icmp=5)
+
self.initiate_tcp_session(self.pg0, self.pg1)
# FIN packet out -> in
self.pg_start()
self.pg0.get_capture(1)
- sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4,
- 0)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 1)
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ out2in_drops = stats[0]
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ in2out_drops = stats[0]
+
+ # extra FIN packet out -> in - this should be dropped
+ 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="FA", seq=300, ack=101))
+
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.assert_nothing_captured()
+
+ # extra ACK packet in -> out - this should be dropped
+ 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", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - out2in_drops, 1)
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - in2out_drops, 1)
+
+ self.sleep(3)
+ # extra ACK packet in -> out - this will cause session to be wiped
+ 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", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
self.assertEqual(len(sessions) - start_sessnum, 0)
def test_tcp_session_close_simultaneous(self):
sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
start_sessnum = len(sessions)
+ self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+ tcp_transitory=2, icmp=5)
+
self.initiate_tcp_session(self.pg0, self.pg1)
# FIN packet in -> out
self.pg_start()
self.pg0.get_capture(1)
- sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4,
- 0)
- self.assertEqual(len(sessions) - start_sessnum, 0)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 1)
- def test_one_armed_nat44_static(self):
- """ One armed NAT44 and 1:1 NAPT asymmetrical rule """
- remote_host = self.pg4.remote_hosts[0]
- local_host = self.pg4.remote_hosts[1]
- external_port = 80
- local_port = 8080
- eh_port_in = 0
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ out2in_drops = stats[0]
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ in2out_drops = stats[0]
- self.vapi.nat44_forwarding_enable_disable(enable=1)
- self.nat44_add_address(self.nat_addr, twice_nat=1)
- flags = (self.config_flags.NAT_IS_OUT2IN_ONLY |
- self.config_flags.NAT_IS_TWICE_NAT)
- self.nat44_add_static_mapping(local_host.ip4, self.nat_addr,
- local_port, external_port,
- proto=IP_PROTOS.tcp, flags=flags)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat44_interface_add_del_feature(
+ # extra FIN packet out -> in - this should be dropped
+ 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="FA", seq=300, ack=101))
+
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.assert_nothing_captured()
+
+ # extra ACK packet in -> out - this should be dropped
+ 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", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - out2in_drops, 1)
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - in2out_drops, 1)
+
+ self.sleep(3)
+ # extra ACK packet in -> out - this will cause session to be wiped
+ 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", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 0)
+
+ def test_one_armed_nat44_static(self):
+ """ One armed NAT44 and 1:1 NAPT asymmetrical rule """
+ remote_host = self.pg4.remote_hosts[0]
+ local_host = self.pg4.remote_hosts[1]
+ external_port = 80
+ local_port = 8080
+ eh_port_in = 0
+
+ self.vapi.nat44_forwarding_enable_disable(enable=1)
+ self.nat44_add_address(self.nat_addr, twice_nat=1)
+ flags = (self.config_flags.NAT_IS_OUT2IN_ONLY |
+ self.config_flags.NAT_IS_TWICE_NAT)
+ self.nat44_add_static_mapping(local_host.ip4, self.nat_addr,
+ local_port, external_port,
+ proto=IP_PROTOS.tcp, flags=flags)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat44_interface_add_del_feature(
sw_if_index=self.pg4.sw_if_index,
is_add=1)
self.vapi.nat44_interface_add_del_feature(
capture = self.pg0.get_capture(len(pkts))
self.verify_capture_in(capture, self.pg0)
+ def test_output_feature_stateful_acl(self):
+ """ NAT44 endpoint-dependent output feature works with stateful ACL """
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_output_feature(
+ sw_if_index=self.pg0.sw_if_index,
+ flags=self.config_flags.NAT_IS_INSIDE,
+ is_add=1)
+ self.vapi.nat44_interface_add_del_output_feature(
+ sw_if_index=self.pg1.sw_if_index,
+ flags=self.config_flags.NAT_IS_OUTSIDE,
+ is_add=1)
+
+ # First ensure that the NAT is working sans ACL
+
+ # send packets out2in, no sessions yet so packets should drop
+ pkts_out2in = self.create_stream_out(self.pg1)
+ self.send_and_assert_no_replies(self.pg1, pkts_out2in)
+
+ # send packets into inside intf, ensure received via outside intf
+ 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)
+
+ # send out2in again, with sessions created it should work now
+ pkts_out2in = self.create_stream_out(self.pg1)
+ capture = self.send_and_expect(self.pg1, pkts_out2in, self.pg0,
+ len(pkts_out2in))
+ self.verify_capture_in(capture, self.pg0)
+
+ # Create an ACL blocking everything
+ out2in_deny_rule = AclRule(is_permit=0)
+ out2in_acl = VppAcl(self, rules=[out2in_deny_rule])
+ out2in_acl.add_vpp_config()
+
+ # create an ACL to permit/reflect everything
+ in2out_reflect_rule = AclRule(is_permit=2)
+ in2out_acl = VppAcl(self, rules=[in2out_reflect_rule])
+ in2out_acl.add_vpp_config()
+
+ # apply as input acl on interface and confirm it blocks everything
+ acl_if = VppAclInterface(self, sw_if_index=self.pg1.sw_if_index,
+ n_input=1, acls=[out2in_acl])
+ acl_if.add_vpp_config()
+ self.send_and_assert_no_replies(self.pg1, pkts_out2in)
+
+ # apply output acl
+ acl_if.acls = [out2in_acl, in2out_acl]
+ acl_if.add_vpp_config()
+ # 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)
+
+ # send out2in again. ACL state exists so it should work now.
+ # TCP packets with the syn flag set also need the ack flag
+ for p in pkts_out2in:
+ if p.haslayer(TCP) and p[TCP].flags & 0x02:
+ p[TCP].flags |= 0x10
+ capture = self.send_and_expect(self.pg1, pkts_out2in, self.pg0,
+ len(pkts_out2in))
+ self.verify_capture_in(capture, self.pg0)
+ self.logger.info(self.vapi.cli("show trace"))
+
def test_multiple_vrf(self):
""" Multiple VRF setup """
external_addr = '1.2.3.4'
self.pg0.remote_ip4)
self.assertEqual(users[0].nsessions, 1)
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_limit_per_user(self):
- """ Maximum sessions per user limit """
- 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)
- 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_set_timeouts(udp=5, tcp_established=7440,
- tcp_transitory=240, icmp=60)
-
- # get maximum number of translations per user
- nat44_config = self.vapi.nat_show_config()
-
- pkts = []
- for port in range(0, nat44_config.max_translations_per_user):
- 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=1025 + port, dport=1025 + 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))
-
- 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) /
- 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 IPFIX logging
- self.vapi.ipfix_flush()
- sleep(1)
- capture = self.pg2.get_capture(10)
- 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,
- nat44_config.max_translations_per_user,
- self.pg0.remote_ip4)
-
- sleep(6)
- 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()
- self.pg1.get_capture(1)
-
def test_syslog_sess(self):
""" Test syslog session creation and deletion """
self.vapi.syslog_set_filter(
super(TestNAT44Out2InDPO, cls).setUpClass()
cls.vapi.cli("set log class nat level debug")
- try:
- cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
- cls.udp_port_in = 6304
- cls.udp_port_out = 6304
- cls.icmp_id_in = 6305
- cls.icmp_id_out = 6305
- cls.nat_addr = '10.0.0.3'
- cls.dst_ip4 = '192.168.70.1'
-
- cls.create_pg_interfaces(range(2))
-
- cls.pg0.admin_up()
- cls.pg0.config_ip4()
- cls.pg0.resolve_arp()
-
- cls.pg1.admin_up()
- cls.pg1.config_ip6()
- cls.pg1.resolve_ndp()
-
- r1 = VppIpRoute(cls, "::", 0,
- [VppRoutePath(cls.pg1.remote_ip6,
- cls.pg1.sw_if_index)],
- register=False)
- r1.add_vpp_config()
-
- except Exception:
- super(TestNAT44Out2InDPO, cls).tearDownClass()
- raise
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.nat_addr = '10.0.0.3'
+ cls.dst_ip4 = '192.168.70.1'
+
+ cls.create_pg_interfaces(range(2))
+
+ cls.pg0.admin_up()
+ cls.pg0.config_ip4()
+ cls.pg0.resolve_arp()
+
+ cls.pg1.admin_up()
+ cls.pg1.config_ip6()
+ cls.pg1.resolve_ndp()
+
+ r1 = VppIpRoute(cls, "::", 0,
+ [VppRoutePath(cls.pg1.remote_ip6,
+ cls.pg1.sw_if_index)],
+ register=False)
+ r1.add_vpp_config()
@classmethod
def tearDownClass(cls):
super(TestDeterministicNAT, cls).setUpClass()
cls.vapi.cli("set log class nat level debug")
- try:
- 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()
-
- except Exception:
- super(TestDeterministicNAT, cls).tearDownClass()
- raise
+ 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):
def setUpClass(cls):
super(TestNAT64, cls).setUpClass()
- try:
- cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
- cls.udp_port_in = 6304
- cls.udp_port_out = 6304
- cls.icmp_id_in = 6305
- cls.icmp_id_out = 6305
- cls.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_ipv6=1, is_add=1,
- table_id=cls.vrf1_id)
-
- 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()
-
- except Exception:
- super(TestNAT64, cls).tearDownClass()
- raise
+ 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):
self.vapi.nat64_add_del_interface(is_add=1, flags=0,
sw_if_index=self.pg1.sw_if_index)
- reass = self.vapi.nat_reass_dump()
- reass_n_start = len(reass)
-
# in2out
data = b'a' * 200
pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
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)
- reass = self.vapi.nat_reass_dump()
- reass_n_end = len(reass)
-
- self.assertEqual(reass_n_end - reass_n_start, 2)
-
def test_reass_hairpinning(self):
""" NAT64 fragments hairpinning """
data = b'a' * 200
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)
data = ipfix.decode_data_set(p.getlayer(Set))
self.verify_ipfix_max_bibs(data, max_bibs)
- def test_ipfix_max_frags(self):
- """ IPFIX logging maximum fragments pending reassembly exceeded """
- 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_reass(timeout=2, max_reass=1024, max_frag=1,
- drop_frag=0, is_ip6=1)
- 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)
-
- 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()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(9)
- 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_fragments_ip6(data, 1,
- self.pg0.remote_ip6n)
-
def test_ipfix_bib_ses(self):
""" IPFIX logging NAT64 BIB/session create and delete events """
self.tcp_port_in = random.randint(1025, 65535)
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"))
- self.logger.info(self.vapi.cli("show nat virtual-reassembly"))
-
-
-class TestDSlite(MethodHolder):
- """ DS-Lite Test Cases """
-
- @classmethod
- def setUpClass(cls):
- super(TestDSlite, cls).setUpClass()
-
- try:
- cls.nat_addr = '10.0.0.3'
-
- cls.create_pg_interfaces(range(3))
- cls.pg0.admin_up()
- cls.pg0.config_ip4()
- cls.pg0.resolve_arp()
- cls.pg1.admin_up()
- cls.pg1.config_ip6()
- cls.pg1.generate_remote_hosts(2)
- cls.pg1.configure_ipv6_neighbors()
- cls.pg2.admin_up()
- cls.pg2.config_ip4()
- cls.pg2.resolve_arp()
-
- except Exception:
- super(TestDSlite, cls).tearDownClass()
- raise
-
- @classmethod
- def tearDownClass(cls):
- super(TestDSlite, cls).tearDownClass()
-
- def verify_syslog_apmadd(self, data, isaddr, isport, xsaddr, xsport,
- sv6enc, proto):
- message = data.decode('utf-8')
- try:
- message = SyslogMessage.parse(message)
- except ParseError as e:
- self.logger.error(e)
- else:
- self.assertEqual(message.severity, SyslogSeverity.info)
- self.assertEqual(message.appname, 'NAT')
- self.assertEqual(message.msgid, 'APMADD')
- sd_params = message.sd.get('napmap')
- self.assertTrue(sd_params is not None)
- self.assertEqual(sd_params.get('IATYP'), 'IPv4')
- self.assertEqual(sd_params.get('ISADDR'), isaddr)
- self.assertEqual(sd_params.get('ISPORT'), "%d" % isport)
- self.assertEqual(sd_params.get('XATYP'), 'IPv4')
- self.assertEqual(sd_params.get('XSADDR'), xsaddr)
- self.assertEqual(sd_params.get('XSPORT'), "%d" % xsport)
- self.assertEqual(sd_params.get('PROTO'), "%d" % proto)
- self.assertTrue(sd_params.get('SSUBIX') is not None)
- self.assertEqual(sd_params.get('SV6ENC'), sv6enc)
-
- def test_dslite(self):
- """ Test DS-Lite """
- nat_config = self.vapi.nat_show_config()
- self.assertEqual(0, nat_config.dslite_ce)
-
- self.vapi.dslite_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- is_add=1)
- aftr_ip4 = '192.0.0.1'
- aftr_ip6 = '2001:db8:85a3::8a2e:370:1'
- self.vapi.dslite_set_aftr_addr(ip4_addr=aftr_ip4, ip6_addr=aftr_ip6)
- self.vapi.syslog_set_sender(self.pg2.local_ip4, self.pg2.remote_ip4)
-
- # UDP
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IPv6(dst=aftr_ip6, src=self.pg1.remote_hosts[0].ip6) /
- IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
- UDP(sport=20000, dport=10000))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(1)
- capture = capture[0]
- self.assertFalse(capture.haslayer(IPv6))
- self.assertEqual(capture[IP].src, self.nat_addr)
- self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
- self.assertNotEqual(capture[UDP].sport, 20000)
- self.assertEqual(capture[UDP].dport, 10000)
- self.assert_packet_checksums_valid(capture)
- out_port = capture[UDP].sport
- capture = self.pg2.get_capture(1)
- self.verify_syslog_apmadd(capture[0][Raw].load, '192.168.1.1',
- 20000, self.nat_addr, out_port,
- self.pg1.remote_hosts[0].ip6, IP_PROTOS.udp)
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(dst=self.nat_addr, src=self.pg0.remote_ip4) /
- UDP(sport=10000, dport=out_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- capture = capture[0]
- self.assertEqual(capture[IPv6].src, aftr_ip6)
- self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[0].ip6)
- self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
- self.assertEqual(capture[IP].dst, '192.168.1.1')
- self.assertEqual(capture[UDP].sport, 10000)
- self.assertEqual(capture[UDP].dport, 20000)
- self.assert_packet_checksums_valid(capture)
-
- # TCP
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IPv6(dst=aftr_ip6, src=self.pg1.remote_hosts[1].ip6) /
- IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
- TCP(sport=20001, dport=10001))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(1)
- capture = capture[0]
- self.assertFalse(capture.haslayer(IPv6))
- self.assertEqual(capture[IP].src, self.nat_addr)
- self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
- self.assertNotEqual(capture[TCP].sport, 20001)
- self.assertEqual(capture[TCP].dport, 10001)
- self.assert_packet_checksums_valid(capture)
- out_port = capture[TCP].sport
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(dst=self.nat_addr, src=self.pg0.remote_ip4) /
- TCP(sport=10001, dport=out_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- capture = capture[0]
- self.assertEqual(capture[IPv6].src, aftr_ip6)
- self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[1].ip6)
- self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
- self.assertEqual(capture[IP].dst, '192.168.1.1')
- self.assertEqual(capture[TCP].sport, 10001)
- self.assertEqual(capture[TCP].dport, 20001)
- self.assert_packet_checksums_valid(capture)
-
- # ICMP
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IPv6(dst=aftr_ip6, src=self.pg1.remote_hosts[1].ip6) /
- IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
- ICMP(id=4000, type='echo-request'))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(1)
- capture = capture[0]
- self.assertFalse(capture.haslayer(IPv6))
- self.assertEqual(capture[IP].src, self.nat_addr)
- self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
- self.assertNotEqual(capture[ICMP].id, 4000)
- self.assert_packet_checksums_valid(capture)
- out_id = capture[ICMP].id
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(dst=self.nat_addr, src=self.pg0.remote_ip4) /
- ICMP(id=out_id, type='echo-reply'))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- capture = capture[0]
- self.assertEqual(capture[IPv6].src, aftr_ip6)
- self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[1].ip6)
- self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
- self.assertEqual(capture[IP].dst, '192.168.1.1')
- self.assertEqual(capture[ICMP].id, 4000)
- self.assert_packet_checksums_valid(capture)
-
- # ping DS-Lite AFTR tunnel endpoint address
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IPv6(src=self.pg1.remote_hosts[1].ip6, dst=aftr_ip6) /
- ICMPv6EchoRequest())
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- capture = capture[0]
- self.assertEqual(capture[IPv6].src, aftr_ip6)
- self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[1].ip6)
- self.assertTrue(capture.haslayer(ICMPv6EchoReply))
-
- b4s = self.statistics.get_counter('/dslite/total-b4s')
- self.assertEqual(b4s[0][0], 2)
- sessions = self.statistics.get_counter('/dslite/total-sessions')
- self.assertEqual(sessions[0][0], 3)
-
- def tearDown(self):
- super(TestDSlite, self).tearDown()
-
- def show_commands_at_teardown(self):
- self.logger.info(self.vapi.cli("show dslite pool"))
- self.logger.info(
- self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
- self.logger.info(self.vapi.cli("show dslite sessions"))
-
-
-class TestDSliteCE(MethodHolder):
- """ DS-Lite CE Test Cases """
-
- @classmethod
- def setUpConstants(cls):
- super(TestDSliteCE, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "dslite ce", "}"])
-
- @classmethod
- def setUpClass(cls):
- super(TestDSliteCE, cls).setUpClass()
-
- try:
- cls.create_pg_interfaces(range(2))
- cls.pg0.admin_up()
- cls.pg0.config_ip4()
- cls.pg0.resolve_arp()
- cls.pg1.admin_up()
- cls.pg1.config_ip6()
- cls.pg1.generate_remote_hosts(1)
- cls.pg1.configure_ipv6_neighbors()
-
- except Exception:
- super(TestDSliteCE, cls).tearDownClass()
- raise
-
- @classmethod
- def tearDownClass(cls):
- super(TestDSliteCE, cls).tearDownClass()
-
- def test_dslite_ce(self):
- """ Test DS-Lite CE """
-
- nat_config = self.vapi.nat_show_config()
- self.assertEqual(1, nat_config.dslite_ce)
-
- b4_ip4 = '192.0.0.2'
- b4_ip6 = '2001:db8:62aa::375e:f4c1:1'
- self.vapi.dslite_set_b4_addr(ip4_addr=b4_ip4, ip6_addr=b4_ip6)
-
- aftr_ip4 = '192.0.0.1'
- aftr_ip6 = '2001:db8:85a3::8a2e:370:1'
- aftr_ip6_n = socket.inet_pton(socket.AF_INET6, aftr_ip6)
- self.vapi.dslite_set_aftr_addr(ip4_addr=aftr_ip4, ip6_addr=aftr_ip6)
-
- r1 = VppIpRoute(self, aftr_ip6, 128,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index)])
- r1.add_vpp_config()
-
- # UDP encapsulation
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(dst=self.pg1.remote_ip4, src=self.pg0.remote_ip4) /
- UDP(sport=10000, dport=20000))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- capture = capture[0]
- self.assertEqual(capture[IPv6].src, b4_ip6)
- self.assertEqual(capture[IPv6].dst, aftr_ip6)
- self.assertEqual(capture[IP].src, self.pg0.remote_ip4)
- self.assertEqual(capture[IP].dst, self.pg1.remote_ip4)
- self.assertEqual(capture[UDP].sport, 10000)
- self.assertEqual(capture[UDP].dport, 20000)
- self.assert_packet_checksums_valid(capture)
-
- # UDP decapsulation
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IPv6(dst=b4_ip6, src=aftr_ip6) /
- IP(dst=self.pg0.remote_ip4, src=self.pg1.remote_ip4) /
- UDP(sport=20000, dport=10000))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(1)
- capture = capture[0]
- self.assertFalse(capture.haslayer(IPv6))
- self.assertEqual(capture[IP].src, self.pg1.remote_ip4)
- self.assertEqual(capture[IP].dst, self.pg0.remote_ip4)
- self.assertEqual(capture[UDP].sport, 20000)
- self.assertEqual(capture[UDP].dport, 10000)
- self.assert_packet_checksums_valid(capture)
-
- # ping DS-Lite B4 tunnel endpoint address
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IPv6(src=self.pg1.remote_hosts[0].ip6, dst=b4_ip6) /
- ICMPv6EchoRequest())
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(1)
- capture = capture[0]
- self.assertEqual(capture[IPv6].src, b4_ip6)
- self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[0].ip6)
- self.assertTrue(capture.haslayer(ICMPv6EchoReply))
-
- def tearDown(self):
- super(TestDSliteCE, self).tearDown()
-
- def show_commands_at_teardown(self):
- self.logger.info(
- self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
- self.logger.info(
- self.vapi.cli("show dslite b4-tunnel-endpoint-address"))
class TestNAT66(MethodHolder):
def setUpClass(cls):
super(TestNAT66, cls).setUpClass()
- try:
- cls.nat_addr = 'fd01:ff::2'
-
- cls.create_pg_interfaces(range(2))
- cls.interfaces = list(cls.pg_interfaces)
+ cls.nat_addr = 'fd01:ff::2'
- for i in cls.interfaces:
- i.admin_up()
- i.config_ip6()
- i.configure_ipv6_neighbors()
+ cls.create_pg_interfaces(range(2))
+ cls.interfaces = list(cls.pg_interfaces)
- except Exception:
- super(TestNAT66, cls).tearDownClass()
- raise
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.configure_ipv6_neighbors()
@classmethod
def tearDownClass(cls):
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)
Code Review / vpp.git / blobdiff