#!/usr/bin/env python3
+import ipaddress
+import random
import socket
-import unittest
import struct
-import random
-
-from framework import VppTestCase, VppTestRunner, running_extended_tests
+import unittest
+from io import BytesIO
+from time import sleep
import scapy.compat
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from scapy.all import bind_layers, Packet, ByteEnumField, ShortField, \
+ IPField, IntField, LongField, XByteField, FlagsField, FieldLenField, \
+ PacketListField
+from scapy.data import IP_PROTOS
from scapy.layers.inet import IP, TCP, UDP, ICMP
from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import ICMPv6DestUnreach, IPerror6, IPv6ExtHdrFragment
from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply, \
ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, fragment6
-from scapy.layers.inet6 import ICMPv6DestUnreach, IPerror6, IPv6ExtHdrFragment
from scapy.layers.l2 import Ether, ARP, GRE
-from scapy.data import IP_PROTOS
-from scapy.packet import bind_layers, Raw
-from util import ppp
-from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
-from time import sleep
-from util import ip4_range
-from vpp_papi import mac_pton
+from scapy.packet import Raw
from syslog_rfc5424_parser import SyslogMessage, ParseError
-from syslog_rfc5424_parser.constants import SyslogFacility, SyslogSeverity
-from io import BytesIO
-from vpp_papi import VppEnum
-from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathType
-from vpp_neighbor import VppNeighbor
-from scapy.all import bind_layers, Packet, ByteEnumField, ShortField, \
- IPField, IntField, LongField, XByteField, FlagsField, FieldLenField, \
- PacketListField
-from ipaddress import IPv6Network
+from syslog_rfc5424_parser.constants import SyslogSeverity
+from util import ip4_range
from util import ppc, ppp
-from socket import inet_pton, AF_INET
from vpp_acl import AclRule, VppAcl, VppAclInterface
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_neighbor import VppNeighbor
+from vpp_papi import VppEnum
# NAT HA protocol event data
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),
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:
else:
nat44_ses_delete_num += 1
# sourceIPv4Address
- self.assertEqual(self.pg0.remote_ip4n, record[8])
+ self.assertEqual(self.pg0.remote_ip4,
+ str(ipaddress.IPv4Address(record[8])))
# postNATSourceIPv4Address
self.assertEqual(socket.inet_pton(socket.AF_INET, self.nat_addr),
record[225])
else:
self.assertEqual(scapy.compat.orb(record[230]), 11)
# sourceIPv6Address
- self.assertEqual(src_addr, record[27])
+ self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
# postNATSourceIPv4Address
self.assertEqual(self.nat_addr_n, record[225])
# protocolIdentifier
else:
self.assertEqual(scapy.compat.orb(record[230]), 7)
# sourceIPv6Address
- self.assertEqual(src_addr, record[27])
+ self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
# destinationIPv6Address
self.assertEqual(socket.inet_pton(socket.AF_INET6,
self.compose_ip6(dst_addr,
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
def tearDownClass(cls):
super(TestNAT44, cls).tearDownClass()
+ def test_clear_sessions(self):
+ """ NAT44 session clearing test """
+
+ 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)
+
+ nat_config = self.vapi.nat_show_config()
+ self.assertEqual(0, nat_config.endpoint_dependent)
+
+ 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)
+
+ sessions = self.statistics.get_counter('/nat44/total-sessions')
+ self.assertTrue(sessions[0][0] > 0)
+ self.logger.info("sessions before clearing: %s" % sessions[0][0])
+
+ self.vapi.cli("clear nat44 sessions")
+
+ sessions = self.statistics.get_counter('/nat44/total-sessions')
+ self.assertEqual(sessions[0][0], 0)
+ self.logger.info("sessions after clearing: %s" % sessions[0][0])
+
def test_dynamic(self):
""" NAT44 dynamic translation test """
self.nat44_add_address(self.nat_addr)
self.logger.info(self.vapi.cli("show nat ha"))
+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 tearDown(self):
+ super(TestNAT44EndpointDependent2, self).tearDown()
+
+ @classmethod
+ def create_and_add_ip4_table(cls, i, table_id):
+ cls.vapi.ip_table_add_del(is_add=1, table={'table_id': table_id})
+ i.set_table_ip4(table_id)
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestNAT44EndpointDependent2, cls).setUpClass()
+
+ cls.create_pg_interfaces(range(3))
+ cls.interfaces = list(cls.pg_interfaces)
+
+ cls.create_and_add_ip4_table(cls.pg1, 10)
+
+ for i in cls.interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ i.generate_remote_hosts(1)
+ i.configure_ipv4_neighbors()
+
+ def setUp(self):
+ super(TestNAT44EndpointDependent2, self).setUp()
+
+ nat_config = self.vapi.nat_show_config()
+ self.assertEqual(1, nat_config.endpoint_dependent)
+
+ def nat_add_inside_interface(self, i):
+ self.vapi.nat44_interface_add_del_feature(
+ flags=self.config_flags.NAT_IS_INSIDE,
+ sw_if_index=i.sw_if_index, is_add=1)
+
+ def nat_add_outside_interface(self, i):
+ self.vapi.nat44_interface_add_del_feature(
+ flags=self.config_flags.NAT_IS_OUTSIDE,
+ sw_if_index=i.sw_if_index, is_add=1)
+
+ def nat_add_interface_address(self, i):
+ self.nat_addr = i.local_ip4
+ self.vapi.nat44_add_del_interface_addr(
+ sw_if_index=i.sw_if_index, is_add=1)
+
+ def nat_add_address(self, address, vrf_id=0xFFFFFFFF):
+ self.nat_addr = address
+ self.nat44_add_address(address, vrf_id=vrf_id)
+
+ def cli(self, command):
+ result = self.vapi.cli(command)
+ self.logger.info(result)
+ # print(result)
+
+ def show_configuration(self):
+ self.cli("show interface")
+ self.cli("show interface address")
+ self.cli("show nat44 addresses")
+ self.cli("show nat44 interfaces")
+
+ def create_tcp_stream(self, in_if, out_if, count):
+ """
+ Create tcp packet stream
+
+ :param in_if: Inside interface
+ :param out_if: Outside interface
+ :param count: count of packets to generate
+ """
+ pkts = []
+ port = 6303
+
+ 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) /
+ TCP(sport=port + i, dport=20))
+ pkts.append(p)
+
+ return pkts
+
+ def test_session_limit_per_vrf(self):
+
+ inside = self.pg0
+ inside_vrf10 = self.pg1
+ outside = self.pg2
+
+ limit = 5
+
+ # 2 interfaces pg0, pg1 (vrf10, limit 1 tcp session)
+ # non existing vrf_id makes process core dump
+ self.vapi.nat44_set_session_limit(session_limit=limit, vrf_id=10)
+
+ self.nat_add_inside_interface(inside)
+ self.nat_add_inside_interface(inside_vrf10)
+ self.nat_add_outside_interface(outside)
+
+ # vrf independent
+ self.nat_add_interface_address(outside)
+
+ # BUG: causing core dump - when bad vrf_id is specified
+ # self.nat44_add_address(outside.local_ip4, vrf_id=20)
+
+ self.show_configuration()
+
+ stream = self.create_tcp_stream(inside_vrf10, outside, limit * 2)
+ inside_vrf10.add_stream(stream)
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ capture = outside.get_capture(limit)
+
+ stream = self.create_tcp_stream(inside, outside, limit * 2)
+ inside.add_stream(stream)
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ capture = outside.get_capture(len(stream))
+
+
class TestNAT44EndpointDependent(MethodHolder):
""" Endpoint-Dependent mapping and filtering test cases """
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.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)
+
+ nat_config = self.vapi.nat_show_config()
+ self.assertEqual(1, nat_config.endpoint_dependent)
+
+ 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)
+
+ sessions = self.statistics.get_counter('/nat44/total-sessions')
+ self.assertTrue(sessions[0][0] > 0)
+ self.logger.info("sessions before clearing: %s" % sessions[0][0])
+
+ # just for testing purposes
+ self.logger.info(self.vapi.cli("show nat44 summary"))
+
+ self.vapi.cli("clear nat44 sessions")
+
+ self.logger.info(self.vapi.cli("show nat44 summary"))
+
+ sessions = self.statistics.get_counter('/nat44/total-sessions')
+ self.assertEqual(sessions[0][0], 0)
+ self.logger.info("sessions after clearing: %s" % sessions[0][0])
def test_dynamic(self):
""" NAT44 dynamic translation 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)
err = self.statistics.get_err_counter(
'/err/nat44-ed-in2out-slowpath/TCP packets')
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.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = self.pg8.get_capture(len(pkts))
- self.verify_capture_out(capture)
+ self.verify_capture_out(capture, ignore_port=True)
err = self.statistics.get_err_counter(
'/err/nat44-ed-in2out-slowpath/TCP packets')
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
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 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)
+
+ 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 tearDown(self):
super(TestNAT44EndpointDependent, self).tearDown()
if not self.vpp_dead:
self.logger.info(self.vapi.cli("show nat timeouts"))
+class TestNAT44EndpointDependent3(MethodHolder):
+ """ Endpoint-Dependent mapping and filtering extra test cases """
+
+ max_translations = 50
+
+ @classmethod
+ def setUpConstants(cls):
+ super(TestNAT44EndpointDependent3, cls).setUpConstants()
+ cls.vpp_cmdline.extend([
+ "nat", "{", "endpoint-dependent",
+ "max translations per thread %d" % cls.max_translations,
+ "}"
+ ])
+
+ @classmethod
+ 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()
+ 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 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 """
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_ip6n,
+ 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_ip6n,
+ 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_ip6n,
+ 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,
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_ip6n)
+ 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_ip6n,
+ self.pg0.remote_ip6,
self.pg1.remote_ip4,
25)
else:
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_ip6n)
+ 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_ip6n,
+ self.pg0.remote_ip6,
self.pg1.remote_ip4,
25)
else:
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_ip6n,
+ local_ip_address=self.pg0.remote_ip6,
external_ip_address=self.nat_addr,
is_add=1)
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_ip6n,
+ local_ip_address=self.pg0.remote_ip6,
external_ip_address=self.nat_addr,
is_add=1)