--- /dev/null
+#!/usr/bin/env python3
+
+import socket
+import unittest
+import struct
+import random
+
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+
+import scapy.compat
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+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 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
+
+
+class TestDSlite(VppTestCase):
+ """ 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():
+ """ 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"))
Code Review / vpp.git / blobdiff