lb_sm.external_addr,
lb_sm.external_port,
lb_sm.protocol,
- vrf_id=lb_sm.vrf_id,
twice_nat=lb_sm.twice_nat,
self_twice_nat=lb_sm.self_twice_nat,
out2in_only=lb_sm.out2in_only,
self.vapi.nat_set_reass()
self.vapi.nat_set_reass(is_ip6=1)
+ self.verify_no_nat44_user()
+ self.vapi.nat_set_timeouts()
def nat44_add_static_mapping(self, local_ip, external_ip='0.0.0.0',
local_port=0, external_port=0, vrf_id=0,
# 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()
+ self.assertEqual(len(users), 0)
+
+ def verify_ipfix_max_entries_per_user(self, data, limit, src_addr):
+ """
+ Verify IPFIX maximum entries per user exceeded event
+
+ :param data: Decoded IPFIX data records
+ :param limit: Number of maximum entries per user
+ :param src_addr: IPv4 source address
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ self.assertEqual(ord(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 3), record[466])
+ # maxEntriesPerUser
+ self.assertEqual(struct.pack("I", limit), record[473])
+ # sourceIPv4Address
+ self.assertEqual(src_addr, record[8])
+
class TestNAT44(MethodHolder):
""" NAT44 Test Cases """
self.verify_capture_out(capture, same_port=True, packet_num=1)
self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp)
- def _test_forwarding(self):
+ def test_forwarding(self):
""" NAT44 forwarding test """
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
external_ip=alias_ip)
try:
- # in2out - static mapping match
+ # static mapping match
pkts = self.create_stream_out(self.pg1)
self.pg1.add_stream(pkts)
capture = self.pg1.get_capture(len(pkts))
self.verify_capture_out(capture, same_port=True)
- # in2out - no static mapping match
+ # no static mapping match
host0 = self.pg0.remote_hosts[0]
self.pg0.remote_hosts[0] = self.pg0.remote_hosts[1]
finally:
self.pg0.remote_hosts[0] = host0
- user = self.pg0.remote_hosts[1]
- sessions = self.vapi.nat44_user_session_dump(user.ip4n, 0)
- self.assertEqual(len(sessions), 3)
- self.assertTrue(sessions[0].ext_host_valid)
- self.vapi.nat44_del_session(
- sessions[0].inside_ip_address,
- sessions[0].inside_port,
- sessions[0].protocol,
- ext_host_address=sessions[0].ext_host_address,
- ext_host_port=sessions[0].ext_host_port)
- sessions = self.vapi.nat44_user_session_dump(user.ip4n, 0)
- self.assertEqual(len(sessions), 2)
-
finally:
self.vapi.nat44_forwarding_enable_disable(0)
self.vapi.nat44_add_del_static_mapping(local_ip=real_ip,
self.pg1.set_table_ip4(vrf_id2)
self.pg0.config_ip4()
self.pg1.config_ip4()
+ self.pg0.resolve_arp()
+ self.pg1.resolve_arp()
self.nat44_add_address(nat_ip1, vrf_id=vrf_id1)
self.nat44_add_address(nat_ip2, vrf_id=vrf_id2)
self.vapi.nat44_interface_add_del_feature(self.pg2.sw_if_index,
is_inside=0)
- # first VRF
- pkts = self.create_stream_in(self.pg0, self.pg2)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip1)
+ try:
+ # first VRF
+ pkts = self.create_stream_in(self.pg0, self.pg2)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg2.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip1)
- # second VRF
- pkts = self.create_stream_in(self.pg1, self.pg2)
- 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_out(capture, nat_ip2)
+ # second VRF
+ pkts = self.create_stream_in(self.pg1, self.pg2)
+ 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_out(capture, nat_ip2)
- self.pg0.unconfig_ip4()
- self.pg1.unconfig_ip4()
- self.pg0.set_table_ip4(0)
- self.pg1.set_table_ip4(0)
- self.vapi.ip_table_add_del(vrf_id1, is_add=0)
- self.vapi.ip_table_add_del(vrf_id2, is_add=0)
+ finally:
+ self.pg0.unconfig_ip4()
+ self.pg1.unconfig_ip4()
+ self.pg0.set_table_ip4(0)
+ self.pg1.set_table_ip4(0)
+ self.pg0.config_ip4()
+ self.pg1.config_ip4()
+ self.pg0.resolve_arp()
+ self.pg1.resolve_arp()
+ self.vapi.ip_table_add_del(vrf_id1, is_add=0)
+ self.vapi.ip_table_add_del(vrf_id2, is_add=0)
def test_vrf_feature_independent(self):
""" NAT44 tenant VRF independent address pool mode """
sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4n, 0)
self.assertEqual(nsessions - len(sessions), 2)
+ self.vapi.nat44_del_session(sessions[0].inside_ip_address,
+ sessions[0].inside_port,
+ sessions[0].protocol)
+
+ 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.verify_ipfix_max_fragments_ip4(data, 0,
self.pg0.remote_ip4n)
+ def test_multiple_outside_vrf(self):
+ """ Multiple outside VRF """
+ vrf_id1 = 1
+ vrf_id2 = 2
+
+ self.pg1.unconfig_ip4()
+ self.pg2.unconfig_ip4()
+ self.vapi.ip_table_add_del(vrf_id1, is_add=1)
+ self.vapi.ip_table_add_del(vrf_id2, is_add=1)
+ self.pg1.set_table_ip4(vrf_id1)
+ self.pg2.set_table_ip4(vrf_id2)
+ self.pg1.config_ip4()
+ self.pg2.config_ip4()
+ self.pg1.resolve_arp()
+ self.pg2.resolve_arp()
+
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_interface_add_del_feature(self.pg2.sw_if_index,
+ is_inside=0)
+
+ try:
+ # first VRF
+ 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.nat_addr)
+
+ pkts = self.create_stream_out(self.pg1, 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(capture, self.pg0)
+
+ self.tcp_port_in = 60303
+ self.udp_port_in = 60304
+ self.icmp_id_in = 60305
+
+ # second VRF
+ pkts = self.create_stream_in(self.pg0, self.pg2)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg2.get_capture(len(pkts))
+ self.verify_capture_out(capture, self.nat_addr)
+
+ pkts = self.create_stream_out(self.pg2, self.nat_addr)
+ self.pg2.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ self.verify_capture_in(capture, self.pg0)
+
+ finally:
+ self.pg1.unconfig_ip4()
+ self.pg2.unconfig_ip4()
+ self.pg1.set_table_ip4(0)
+ self.pg2.set_table_ip4(0)
+ self.pg1.config_ip4()
+ self.pg2.config_ip4()
+ self.pg1.resolve_arp()
+ self.pg2.resolve_arp()
+
+ @unittest.skipUnless(running_extended_tests(), "part of extended tests")
+ def test_session_timeout(self):
+ """ NAT44 session timeouts """
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat_set_timeouts(udp=5)
+
+ max_sessions = 1000
+ pkts = []
+ for i in range(0, max_sessions):
+ src = "10.10.%u.%u" % ((i & 0xFF00) >> 8, i & 0xFF)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=src, dst=self.pg1.remote_ip4) /
+ UDP(sport=1025, dport=53))
+ pkts.append(p)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(max_sessions)
+
+ sleep(6)
+
+ pkts = []
+ for i in range(0, max_sessions):
+ src = "10.10.%u.%u" % ((i & 0xFF00) >> 8, i & 0xFF)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=src, dst=self.pg1.remote_ip4) /
+ UDP(sport=1026, dport=53))
+ pkts.append(p)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(max_sessions)
+
+ nsessions = 0
+ users = self.vapi.nat44_user_dump()
+ for user in users:
+ nsessions = nsessions + user.nsessions
+ self.assertLess(nsessions, 2 * max_sessions)
+
def tearDown(self):
super(TestNAT44, self).tearDown()
if not self.vpp_dead:
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.vapi.cli("nat addr-port-assignment-alg default")
self.clear_nat44()
self.vapi.cli("clear logging")
cls.ipfix_domain_id = 1
cls.tcp_external_port = 80
- cls.create_pg_interfaces(range(5))
+ cls.create_pg_interfaces(range(7))
cls.interfaces = list(cls.pg_interfaces[0:3])
for i in cls.interfaces:
cls.pg4._remote_hosts[1]._ip4 = cls.pg4._remote_hosts[0]._ip4
cls.pg4.resolve_arp()
+ zero_ip4n = socket.inet_pton(socket.AF_INET, "0.0.0.0")
+ cls.vapi.ip_table_add_del(1, is_add=1)
+
+ cls.pg5._local_ip4 = "10.1.1.1"
+ cls.pg5._local_ip4n = socket.inet_pton(socket.AF_INET,
+ cls.pg5.local_ip4)
+ cls.pg5._remote_hosts[0]._ip4 = "10.1.1.2"
+ cls.pg5._remote_hosts[0]._ip4n = socket.inet_pton(
+ socket.AF_INET, cls.pg5.remote_ip4)
+ cls.pg5.set_table_ip4(1)
+ cls.pg5.config_ip4()
+ cls.pg5.admin_up()
+ cls.vapi.ip_add_del_route(dst_address=cls.pg5.remote_ip4n,
+ dst_address_length=32,
+ table_id=1,
+ next_hop_sw_if_index=cls.pg5.sw_if_index,
+ next_hop_address=zero_ip4n)
+
+ cls.pg6._local_ip4 = "10.1.2.1"
+ cls.pg6._local_ip4n = socket.inet_pton(socket.AF_INET,
+ cls.pg6.local_ip4)
+ cls.pg6._remote_hosts[0]._ip4 = "10.1.2.2"
+ cls.pg6._remote_hosts[0]._ip4n = socket.inet_pton(
+ socket.AF_INET, cls.pg6.remote_ip4)
+ cls.pg6.set_table_ip4(1)
+ cls.pg6.config_ip4()
+ cls.pg6.admin_up()
+ cls.vapi.ip_add_del_route(dst_address=cls.pg6.remote_ip4n,
+ dst_address_length=32,
+ table_id=1,
+ next_hop_sw_if_index=cls.pg6.sw_if_index,
+ next_hop_address=zero_ip4n)
+
+ cls.vapi.ip_add_del_route(dst_address=cls.pg6.remote_ip4n,
+ dst_address_length=16,
+ next_hop_address=zero_ip4n,
+ table_id=0,
+ next_hop_table_id=1)
+ cls.vapi.ip_add_del_route(dst_address=zero_ip4n,
+ dst_address_length=0,
+ next_hop_address=zero_ip4n,
+ table_id=1,
+ next_hop_table_id=0)
+ cls.vapi.ip_add_del_route(dst_address=zero_ip4n,
+ dst_address_length=0,
+ table_id=0,
+ next_hop_sw_if_index=cls.pg1.sw_if_index,
+ next_hop_address=cls.pg1.local_ip4n)
+
+ cls.pg5.resolve_arp()
+ cls.pg6.resolve_arp()
+
except Exception:
super(TestNAT44EndpointDependent, cls).tearDownClass()
raise
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
+ nat_config = self.vapi.nat_show_config()
+ self.assertEqual(1, nat_config.endpoint_dependent)
+
# in2out
pkts = self.create_stream_in(self.pg0, self.pg1)
self.pg0.add_stream(pkts)
locals = [{'addr': server1.ip4n,
'port': local_port,
- 'probability': 70},
+ 'probability': 70,
+ 'vrf_id': 0},
{'addr': server2.ip4n,
'port': local_port,
- 'probability': 30}]
+ 'probability': 30,
+ 'vrf_id': 0}]
self.nat44_add_address(self.nat_addr)
self.vapi.nat44_add_del_lb_static_mapping(external_addr_n,
locals = [{'addr': server1.ip4n,
'port': local_port,
- 'probability': 90},
+ 'probability': 90,
+ 'vrf_id': 0},
{'addr': server2.ip4n,
'port': local_port,
- 'probability': 10}]
+ 'probability': 10,
+ 'vrf_id': 0}]
self.nat44_add_address(self.nat_addr)
self.vapi.nat44_add_del_lb_static_mapping(external_addr_n,
locals = [{'addr': server1.ip4n,
'port': local_port,
- 'probability': 70},
+ 'probability': 70,
+ 'vrf_id': 0},
{'addr': server2.ip4n,
'port': local_port,
- 'probability': 30}]
+ 'probability': 30,
+ 'vrf_id': 0}]
self.vapi.nat44_forwarding_enable_disable(1)
self.vapi.nat44_add_del_lb_static_mapping(external_addr_n,
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
+ def test_next_src_nat(self):
+ """ On way back forward packet to nat44-in2out node. """
+ twice_nat_addr = '10.0.1.3'
+ external_port = 80
+ local_port = 8080
+ post_twice_nat_port = 0
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(twice_nat_addr, twice_nat=1)
+ self.nat44_add_static_mapping(self.pg6.remote_ip4, self.pg1.remote_ip4,
+ local_port, external_port,
+ proto=IP_PROTOS.tcp, out2in_only=1,
+ self_twice_nat=1, vrf_id=1)
+ self.vapi.nat44_interface_add_del_feature(self.pg6.sw_if_index,
+ is_inside=0)
+
+ p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+ IP(src=self.pg6.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=12345, dport=external_port))
+ self.pg6.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, twice_nat_addr)
+ self.assertNotEqual(tcp.sport, 12345)
+ post_twice_nat_port = tcp.sport
+ self.assertEqual(ip.dst, self.pg6.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+ IP(src=self.pg6.remote_ip4, dst=twice_nat_addr) /
+ TCP(sport=local_port, dport=post_twice_nat_port))
+ self.pg6.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg1.remote_ip4)
+ self.assertEqual(tcp.sport, external_port)
+ self.assertEqual(ip.dst, self.pg6.remote_ip4)
+ self.assertEqual(tcp.dport, 12345)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
def twice_nat_common(self, self_twice_nat=False, same_pg=False, lb=False,
client_id=None):
twice_nat_addr = '10.0.1.3'
else:
locals = [{'addr': server1.ip4n,
'port': port_in1,
- 'probability': 50},
+ 'probability': 50,
+ 'vrf_id': 0},
{'addr': server2.ip4n,
'port': port_in2,
- 'probability': 50}]
+ 'probability': 50,
+ 'vrf_id': 0}]
out_addr_n = socket.inet_pton(socket.AF_INET, self.nat_addr)
self.vapi.nat44_add_del_lb_static_mapping(out_addr_n,
port_out,
capture = self.pg0.get_capture(len(pkts))
self.verify_capture_in(capture, self.pg0)
+ def test_multiple_vrf(self):
+ """ Multiple VRF setup """
+ external_addr = '1.2.3.4'
+ external_port = 80
+ local_port = 8080
+ port = 0
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_interface_add_del_output_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_interface_add_del_feature(self.pg5.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg5.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_interface_add_del_feature(self.pg6.sw_if_index,
+ is_inside=0)
+ self.nat44_add_static_mapping(self.pg5.remote_ip4, external_addr,
+ local_port, external_port, vrf_id=1,
+ proto=IP_PROTOS.tcp, out2in_only=1)
+ self.nat44_add_static_mapping(
+ self.pg0.remote_ip4, external_sw_if_index=self.pg0.sw_if_index,
+ local_port=local_port, vrf_id=0, external_port=external_port,
+ proto=IP_PROTOS.tcp, out2in_only=1)
+
+ # from client to service (both VRF1)
+ p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+ IP(src=self.pg6.remote_ip4, dst=external_addr) /
+ TCP(sport=12345, dport=external_port))
+ self.pg6.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg5.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg5.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service back to client (both VRF1)
+ p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+ IP(src=self.pg5.remote_ip4, dst=self.pg6.remote_ip4) /
+ TCP(sport=local_port, dport=12345))
+ self.pg5.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, external_addr)
+ self.assertEqual(tcp.sport, external_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # dynamic NAT from VRF1 to VRF0 (output-feature)
+ p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+ IP(src=self.pg5.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=2345, dport=22))
+ self.pg5.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertNotEqual(tcp.sport, 2345)
+ self.assert_packet_checksums_valid(p)
+ port = tcp.sport
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=22, dport=port))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg5.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg5.remote_ip4)
+ self.assertEqual(tcp.dport, 2345)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from client VRF1 to service VRF0
+ p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+ IP(src=self.pg6.remote_ip4, dst=self.pg0.local_ip4) /
+ TCP(sport=12346, dport=external_port))
+ self.pg6.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg0.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service VRF0 back to client VRF1
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg6.remote_ip4) /
+ TCP(sport=local_port, dport=12346))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg0.local_ip4)
+ self.assertEqual(tcp.sport, external_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from client VRF0 to service VRF1
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=external_addr) /
+ TCP(sport=12347, dport=external_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg5.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg5.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from service VRF1 back to client VRF0
+ p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+ IP(src=self.pg5.remote_ip4, dst=self.pg0.remote_ip4) /
+ TCP(sport=local_port, dport=12347))
+ self.pg5.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, external_addr)
+ self.assertEqual(tcp.sport, external_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from client to server (both VRF1, no translation)
+ p = (Ether(src=self.pg6.remote_mac, dst=self.pg6.local_mac) /
+ IP(src=self.pg6.remote_ip4, dst=self.pg5.remote_ip4) /
+ TCP(sport=12348, dport=local_port))
+ self.pg6.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg5.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg5.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from server back to client (both VRF1, no translation)
+ p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+ IP(src=self.pg5.remote_ip4, dst=self.pg6.remote_ip4) /
+ TCP(sport=local_port, dport=12348))
+ self.pg5.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg5.remote_ip4)
+ self.assertEqual(tcp.sport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from client VRF1 to server VRF0 (no translation)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg6.remote_ip4) /
+ TCP(sport=local_port, dport=12349))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg0.remote_ip4)
+ self.assertEqual(tcp.sport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from server VRF0 back to client VRF1 (no translation)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg6.remote_ip4) /
+ TCP(sport=local_port, dport=12349))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg6.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.pg0.remote_ip4)
+ self.assertEqual(tcp.sport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from client VRF0 to server VRF1 (no translation)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg5.remote_ip4) /
+ TCP(sport=12344, dport=local_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg5.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg5.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # from server VRF1 back to client VRF0 (no translation)
+ p = (Ether(src=self.pg5.remote_mac, dst=self.pg5.local_mac) /
+ IP(src=self.pg5.remote_ip4, dst=self.pg0.remote_ip4) /
+ TCP(sport=local_port, dport=12344))
+ self.pg5.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.pg5.remote_ip4)
+ self.assertEqual(tcp.sport, local_port)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ @unittest.skipUnless(running_extended_tests(), "part of extended tests")
+ def test_session_timeout(self):
+ """ NAT44 session timeouts """
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat_set_timeouts(icmp=5)
+
+ max_sessions = 1000
+ pkts = []
+ for i in range(0, max_sessions):
+ src = "10.10.%u.%u" % ((i & 0xFF00) >> 8, i & 0xFF)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=src, dst=self.pg1.remote_ip4) /
+ ICMP(id=1025, 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(max_sessions)
+
+ sleep(10)
+
+ pkts = []
+ for i in range(0, max_sessions):
+ src = "10.10.%u.%u" % ((i & 0xFF00) >> 8, i & 0xFF)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=src, dst=self.pg1.remote_ip4) /
+ ICMP(id=1026, 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(max_sessions)
+
+ nsessions = 0
+ users = self.vapi.nat44_user_dump()
+ for user in users:
+ nsessions = nsessions + user.nsessions
+ self.assertLess(nsessions, 2 * max_sessions)
+
+ @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)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.set_ipfix_exporter(collector_address=self.pg2.remote_ip4n,
+ src_address=self.pg2.local_ip4n,
+ path_mtu=512,
+ template_interval=10)
+
+ # 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(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port)
+
+ 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.cli("ipfix flush") # FIXME this should be an API call
+ 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_ip4n)
+
def tearDown(self):
super(TestNAT44EndpointDependent, self).tearDown()
if not self.vpp_dead:
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.clear_nat44()
self.vapi.cli("clear logging")
def test_464xlat_ce(self):
""" Test 464XLAT CE with NAT44 """
+ nat_config = self.vapi.nat_show_config()
+ self.assertEqual(1, nat_config.out2in_dpo)
+
self.configure_xlat()
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
"(outside network):", packet))
raise
- def verify_ipfix_max_entries_per_user(self, data):
- """
- Verify IPFIX maximum entries per user exceeded event
-
- :param data: Decoded IPFIX data records
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- self.assertEqual(ord(record[230]), 13)
- # natQuotaExceededEvent
- self.assertEqual('\x03\x00\x00\x00', record[466])
- # maxEntriesPerUser
- self.assertEqual('\xe8\x03\x00\x00', record[473])
- # sourceIPv4Address
- self.assertEqual(self.pg0.remote_ip4n, record[8])
-
def test_deterministic_mode(self):
""" NAT plugin run deterministic mode """
in_addr = '172.16.255.0'
def test_set_timeouts(self):
""" Set deterministic NAT timeouts """
- timeouts_before = self.vapi.nat_det_get_timeouts()
+ timeouts_before = self.vapi.nat_get_timeouts()
- self.vapi.nat_det_set_timeouts(timeouts_before.udp + 10,
- timeouts_before.tcp_established + 10,
- timeouts_before.tcp_transitory + 10,
- timeouts_before.icmp + 10)
+ self.vapi.nat_set_timeouts(timeouts_before.udp + 10,
+ timeouts_before.tcp_established + 10,
+ timeouts_before.tcp_transitory + 10,
+ timeouts_before.icmp + 10)
- timeouts_after = self.vapi.nat_det_get_timeouts()
+ timeouts_after = self.vapi.nat_get_timeouts()
self.assertNotEqual(timeouts_before.udp, timeouts_after.udp)
self.assertNotEqual(timeouts_before.icmp, timeouts_after.icmp)
is_inside=0)
self.initiate_tcp_session(self.pg0, self.pg1)
- self.vapi.nat_det_set_timeouts(5, 5, 5, 5)
+ self.vapi.nat_set_timeouts(5, 5, 5, 5)
pkts = self.create_stream_in(self.pg0, self.pg1)
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
for p in capture:
if p.haslayer(Data):
data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_entries_per_user(data)
+ self.verify_ipfix_max_entries_per_user(data,
+ 1000,
+ self.pg0.remote_ip4n)
def clear_nat_det(self):
"""
Clear deterministic NAT configuration.
"""
self.vapi.nat_ipfix(enable=0)
- self.vapi.nat_det_set_timeouts()
+ self.vapi.nat_set_timeouts()
deterministic_mappings = self.vapi.nat_det_map_dump()
for dsm in deterministic_mappings:
self.vapi.nat_det_add_del_map(dsm.in_addr,
super(TestDeterministicNAT, self).tearDown()
if not self.vpp_dead:
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 timeouts"))
self.logger.info(
self.vapi.cli("show nat44 deterministic sessions"))
self.clear_nat_det()
def test_set_timeouts(self):
""" Set NAT64 timeouts """
# verify default values
- timeouts = self.vapi.nat64_get_timeouts()
+ timeouts = self.vapi.nat_get_timeouts()
self.assertEqual(timeouts.udp, 300)
self.assertEqual(timeouts.icmp, 60)
- self.assertEqual(timeouts.tcp_trans, 240)
- self.assertEqual(timeouts.tcp_est, 7440)
- self.assertEqual(timeouts.tcp_incoming_syn, 6)
+ self.assertEqual(timeouts.tcp_transitory, 240)
+ self.assertEqual(timeouts.tcp_established, 7440)
# set and verify custom values
- self.vapi.nat64_set_timeouts(udp=200, icmp=30, tcp_trans=250,
- tcp_est=7450, tcp_incoming_syn=10)
- timeouts = self.vapi.nat64_get_timeouts()
+ self.vapi.nat_set_timeouts(udp=200, icmp=30, tcp_transitory=250,
+ tcp_established=7450)
+ timeouts = self.vapi.nat_get_timeouts()
self.assertEqual(timeouts.udp, 200)
self.assertEqual(timeouts.icmp, 30)
- self.assertEqual(timeouts.tcp_trans, 250)
- self.assertEqual(timeouts.tcp_est, 7450)
- self.assertEqual(timeouts.tcp_incoming_syn, 10)
+ self.assertEqual(timeouts.tcp_transitory, 250)
+ self.assertEqual(timeouts.tcp_established, 7450)
def test_dynamic(self):
""" NAT64 dynamic translation test """
self.nat_addr_n)
self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
- self.vapi.nat64_set_timeouts(icmp=5)
+ self.vapi.nat_set_timeouts(icmp=5, tcp_transitory=5, tcp_established=5)
pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
self.pg0.add_stream(pkts)
sleep(15)
- # ICMP session after timeout
+ # ICMP and TCP session after timeout
ses_num_after_timeout = self.nat64_get_ses_num()
- self.assertNotEqual(ses_num_before_timeout, ses_num_after_timeout)
+ self.assertEqual(ses_num_before_timeout - ses_num_after_timeout, 2)
def test_icmp_error(self):
""" NAT64 ICMP Error message translation """
self.ipfix_src_port = 4739
self.ipfix_domain_id = 1
- self.vapi.nat64_set_timeouts()
+ self.vapi.nat_set_timeouts()
interfaces = self.vapi.nat64_interface_dump()
for intf in interfaces:
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(self.nat_addr_n,
self.nat_addr_n)
aftr_ip4 = '192.0.0.1'
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_ip4_n = socket.inet_pton(socket.AF_INET, b4_ip4)
b4_ip6 = '2001:db8:62aa::375e:f4c1:1'
Code Review / vpp.git / blobdiff