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authorDave Wallace <dwallacelf@gmail.com>2021-05-12 21:43:59 -0400
committerDamjan Marion <dmarion@me.com>2021-05-13 09:33:06 +0000
commiteddd8e3588561039985b27edf059db6033bfdfab (patch)
tree44896887d6070853ea77a18cae218f5d4ef4d93a /src/plugins/nat/test/test_nat64.py
parentfd77f8c00c8e9d528d91a9cefae1878e383582ed (diff)
tests: move test source to vpp/test
- Generate copyright year and version instead of using hard-coded data Type: refactor Signed-off-by: Dave Wallace <dwallacelf@gmail.com> Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e
Diffstat (limited to 'src/plugins/nat/test/test_nat64.py')
-rw-r--r--src/plugins/nat/test/test_nat64.py1937
1 files changed, 0 insertions, 1937 deletions
diff --git a/src/plugins/nat/test/test_nat64.py b/src/plugins/nat/test/test_nat64.py
deleted file mode 100644
index 9a10b9fc380..00000000000
--- a/src/plugins/nat/test/test_nat64.py
+++ /dev/null
@@ -1,1937 +0,0 @@
-#!/usr/bin/env python3
-
-import ipaddress
-import random
-import socket
-import struct
-import unittest
-from io import BytesIO
-from time import sleep
-
-import scapy.compat
-from framework import tag_fixme_vpp_workers
-from framework import VppTestCase, VppTestRunner, running_extended_tests
-from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
-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.l2 import Ether, GRE
-from scapy.packet import Raw
-from syslog_rfc5424_parser import SyslogMessage, ParseError
-from syslog_rfc5424_parser.constants import SyslogSeverity
-from util import ppc, ppp
-from vpp_papi import VppEnum
-
-
-@tag_fixme_vpp_workers
-class TestNAT64(VppTestCase):
- """ NAT64 Test Cases """
-
- @property
- def SYSLOG_SEVERITY(self):
- return VppEnum.vl_api_syslog_severity_t
-
- @property
- def config_flags(self):
- return VppEnum.vl_api_nat_config_flags_t
-
- @classmethod
- def setUpClass(cls):
- super(TestNAT64, cls).setUpClass()
-
- cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
- cls.udp_port_in = 6304
- cls.udp_port_out = 6304
- cls.icmp_id_in = 6305
- cls.icmp_id_out = 6305
- cls.tcp_external_port = 80
- cls.nat_addr = '10.0.0.3'
- cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
- cls.vrf1_id = 10
- cls.vrf1_nat_addr = '10.0.10.3'
- cls.ipfix_src_port = 4739
- cls.ipfix_domain_id = 1
-
- cls.create_pg_interfaces(range(6))
- cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
- cls.ip6_interfaces.append(cls.pg_interfaces[2])
- cls.ip4_interfaces = list(cls.pg_interfaces[1:2])
-
- cls.vapi.ip_table_add_del(is_add=1,
- table={'table_id': cls.vrf1_id,
- 'is_ip6': 1})
-
- cls.pg_interfaces[2].set_table_ip6(cls.vrf1_id)
-
- cls.pg0.generate_remote_hosts(2)
-
- for i in cls.ip6_interfaces:
- i.admin_up()
- i.config_ip6()
- i.configure_ipv6_neighbors()
-
- for i in cls.ip4_interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
-
- cls.pg3.admin_up()
- cls.pg3.config_ip4()
- cls.pg3.resolve_arp()
- cls.pg3.config_ip6()
- cls.pg3.configure_ipv6_neighbors()
-
- cls.pg5.admin_up()
- cls.pg5.config_ip6()
-
- @classmethod
- def tearDownClass(cls):
- super(TestNAT64, cls).tearDownClass()
-
- def setUp(self):
- super(TestNAT64, self).setUp()
- self.vapi.nat64_plugin_enable_disable(enable=1,
- bib_buckets=128, st_buckets=256)
-
- def tearDown(self):
- super(TestNAT64, self).tearDown()
- if not self.vpp_dead:
- self.vapi.nat64_plugin_enable_disable(enable=0)
-
- def show_commands_at_teardown(self):
- self.logger.info(self.vapi.cli("show nat64 pool"))
- self.logger.info(self.vapi.cli("show nat64 interfaces"))
- self.logger.info(self.vapi.cli("show nat64 prefix"))
- self.logger.info(self.vapi.cli("show nat64 bib all"))
- self.logger.info(self.vapi.cli("show nat64 session table all"))
-
- def create_stream_in_ip6(self, in_if, out_if, hlim=64, pref=None, plen=0):
- """
- Create IPv6 packet stream for inside network
-
- :param in_if: Inside interface
- :param out_if: Outside interface
- :param ttl: Hop Limit of generated packets
- :param pref: NAT64 prefix
- :param plen: NAT64 prefix length
- """
- pkts = []
- if pref is None:
- dst = ''.join(['64:ff9b::', out_if.remote_ip4])
- else:
- dst = self.compose_ip6(out_if.remote_ip4, pref, plen)
-
- # TCP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- TCP(sport=self.tcp_port_in, dport=20))
- pkts.append(p)
-
- # UDP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- UDP(sport=self.udp_port_in, dport=20))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- ICMPv6EchoRequest(id=self.icmp_id_in))
- pkts.append(p)
-
- return pkts
-
- def create_stream_out(self, out_if, dst_ip=None, ttl=64,
- use_inside_ports=False):
- """
- Create packet stream for outside network
-
- :param out_if: Outside interface
- :param dst_ip: Destination IP address (Default use global NAT address)
- :param ttl: TTL of generated packets
- :param use_inside_ports: Use inside NAT ports as destination ports
- instead of outside ports
- """
- if dst_ip is None:
- dst_ip = self.nat_addr
- if not use_inside_ports:
- tcp_port = self.tcp_port_out
- udp_port = self.udp_port_out
- icmp_id = self.icmp_id_out
- else:
- tcp_port = self.tcp_port_in
- udp_port = self.udp_port_in
- icmp_id = self.icmp_id_in
- pkts = []
- # TCP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- TCP(dport=tcp_port, sport=20))
- pkts.extend([p, p])
-
- # UDP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- UDP(dport=udp_port, sport=20))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
- IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- ICMP(id=icmp_id, type='echo-reply'))
- pkts.append(p)
-
- return pkts
-
- def verify_capture_out(self, capture, nat_ip=None, same_port=False,
- dst_ip=None, is_ip6=False, ignore_port=False):
- """
- Verify captured packets on outside network
-
- :param capture: Captured packets
- :param nat_ip: Translated IP address (Default use global NAT address)
- :param same_port: Source port number is not translated (Default False)
- :param dst_ip: Destination IP address (Default do not verify)
- :param is_ip6: If L3 protocol is IPv6 (Default False)
- """
- if is_ip6:
- IP46 = IPv6
- ICMP46 = ICMPv6EchoRequest
- else:
- IP46 = IP
- ICMP46 = ICMP
- if nat_ip is None:
- nat_ip = self.nat_addr
- for packet in capture:
- try:
- if not is_ip6:
- self.assert_packet_checksums_valid(packet)
- self.assertEqual(packet[IP46].src, nat_ip)
- if dst_ip is not None:
- self.assertEqual(packet[IP46].dst, dst_ip)
- if packet.haslayer(TCP):
- 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 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 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:
- self.logger.error(ppp("Unexpected or invalid packet "
- "(outside network):", packet))
- raise
-
- def verify_capture_in_ip6(self, capture, src_ip, dst_ip):
- """
- Verify captured IPv6 packets on inside network
-
- :param capture: Captured packets
- :param src_ip: Source IP
- :param dst_ip: Destination IP address
- """
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, src_ip)
- self.assertEqual(packet[IPv6].dst, dst_ip)
- self.assert_packet_checksums_valid(packet)
- if packet.haslayer(TCP):
- self.assertEqual(packet[TCP].dport, self.tcp_port_in)
- elif packet.haslayer(UDP):
- self.assertEqual(packet[UDP].dport, self.udp_port_in)
- else:
- self.assertEqual(packet[ICMPv6EchoReply].id,
- self.icmp_id_in)
- except:
- self.logger.error(ppp("Unexpected or invalid packet "
- "(inside network):", packet))
- raise
-
- def create_stream_frag(self, src_if, dst, sport, dport, data,
- proto=IP_PROTOS.tcp, echo_reply=False):
- """
- Create fragmented packet stream
-
- :param src_if: Source interface
- :param dst: Destination IPv4 address
- :param sport: Source port
- :param dport: Destination port
- :param data: Payload data
- :param proto: protocol (TCP, UDP, ICMP)
- :param echo_reply: use echo_reply if protocol is ICMP
- :returns: Fragments
- """
- if proto == IP_PROTOS.tcp:
- p = (IP(src=src_if.remote_ip4, dst=dst) /
- TCP(sport=sport, dport=dport) /
- Raw(data))
- p = p.__class__(scapy.compat.raw(p))
- chksum = p[TCP].chksum
- proto_header = TCP(sport=sport, dport=dport, chksum=chksum)
- elif proto == IP_PROTOS.udp:
- proto_header = UDP(sport=sport, dport=dport)
- elif proto == IP_PROTOS.icmp:
- if not echo_reply:
- proto_header = ICMP(id=sport, type='echo-request')
- else:
- proto_header = ICMP(id=sport, type='echo-reply')
- else:
- raise Exception("Unsupported protocol")
- id = random.randint(0, 65535)
- pkts = []
- if proto == IP_PROTOS.tcp:
- raw = Raw(data[0:4])
- else:
- raw = Raw(data[0:16])
- p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
- IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=0, id=id) /
- proto_header /
- raw)
- pkts.append(p)
- if proto == IP_PROTOS.tcp:
- raw = Raw(data[4:20])
- else:
- raw = Raw(data[16:32])
- p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
- IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=3, id=id,
- proto=proto) /
- raw)
- pkts.append(p)
- if proto == IP_PROTOS.tcp:
- raw = Raw(data[20:])
- else:
- raw = Raw(data[32:])
- p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
- IP(src=src_if.remote_ip4, dst=dst, frag=5, proto=proto,
- id=id) /
- raw)
- pkts.append(p)
- return pkts
-
- def create_stream_frag_ip6(self, src_if, dst, sport, dport, data,
- pref=None, plen=0, frag_size=128):
- """
- Create fragmented packet stream
-
- :param src_if: Source interface
- :param dst: Destination IPv4 address
- :param sport: Source TCP port
- :param dport: Destination TCP port
- :param data: Payload data
- :param pref: NAT64 prefix
- :param plen: NAT64 prefix length
- :param fragsize: size of fragments
- :returns: Fragments
- """
- if pref is None:
- dst_ip6 = ''.join(['64:ff9b::', dst])
- else:
- dst_ip6 = self.compose_ip6(dst, pref, plen)
-
- p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
- IPv6(src=src_if.remote_ip6, dst=dst_ip6) /
- IPv6ExtHdrFragment(id=random.randint(0, 65535)) /
- TCP(sport=sport, dport=dport) /
- Raw(data))
-
- return fragment6(p, frag_size)
-
- def reass_frags_and_verify(self, frags, src, dst):
- """
- Reassemble and verify fragmented packet
-
- :param frags: Captured fragments
- :param src: Source IPv4 address to verify
- :param dst: Destination IPv4 address to verify
-
- :returns: Reassembled IPv4 packet
- """
- buffer = BytesIO()
- for p in frags:
- self.assertEqual(p[IP].src, src)
- self.assertEqual(p[IP].dst, dst)
- self.assert_ip_checksum_valid(p)
- buffer.seek(p[IP].frag * 8)
- buffer.write(bytes(p[IP].payload))
- ip = IP(src=frags[0][IP].src, dst=frags[0][IP].dst,
- 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]) /
- Raw(buffer.getvalue()[8:]))
- elif ip.proto == IP_PROTOS.icmp:
- p = (ip / ICMP(buffer.getvalue()))
- return p
-
- def reass_frags_and_verify_ip6(self, frags, src, dst):
- """
- Reassemble and verify fragmented packet
-
- :param frags: Captured fragments
- :param src: Source IPv6 address to verify
- :param dst: Destination IPv6 address to verify
-
- :returns: Reassembled IPv6 packet
- """
- buffer = BytesIO()
- for p in frags:
- self.assertEqual(p[IPv6].src, src)
- self.assertEqual(p[IPv6].dst, dst)
- buffer.seek(p[IPv6ExtHdrFragment].offset * 8)
- buffer.write(bytes(p[IPv6ExtHdrFragment].payload))
- ip = IPv6(src=frags[0][IPv6].src, dst=frags[0][IPv6].dst,
- nh=frags[0][IPv6ExtHdrFragment].nh)
- if ip.nh == IP_PROTOS.tcp:
- 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
-
- def verify_ipfix_max_bibs(self, data, limit):
- """
- Verify IPFIX maximum BIB entries exceeded event
-
- :param data: Decoded IPFIX data records
- :param limit: Number of maximum BIB entries that can be created.
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- self.assertEqual(scapy.compat.orb(record[230]), 13)
- # natQuotaExceededEvent
- self.assertEqual(struct.pack("I", 2), record[466])
- # maxBIBEntries
- self.assertEqual(struct.pack("I", limit), record[472])
-
- def verify_ipfix_bib(self, data, is_create, src_addr):
- """
- Verify IPFIX NAT64 BIB create and delete events
-
- :param data: Decoded IPFIX data records
- :param is_create: Create event if nonzero value otherwise delete event
- :param src_addr: IPv6 source address
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- if is_create:
- self.assertEqual(scapy.compat.orb(record[230]), 10)
- else:
- self.assertEqual(scapy.compat.orb(record[230]), 11)
- # sourceIPv6Address
- self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
- # postNATSourceIPv4Address
- self.assertEqual(self.nat_addr_n, record[225])
- # protocolIdentifier
- self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
- # ingressVRFID
- self.assertEqual(struct.pack("!I", 0), record[234])
- # sourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
- # postNAPTSourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
-
- def verify_ipfix_nat64_ses(self, data, is_create, src_addr, dst_addr,
- dst_port):
- """
- Verify IPFIX NAT64 session create and delete events
-
- :param data: Decoded IPFIX data records
- :param is_create: Create event if nonzero value otherwise delete event
- :param src_addr: IPv6 source address
- :param dst_addr: IPv4 destination address
- :param dst_port: destination TCP port
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- if is_create:
- self.assertEqual(scapy.compat.orb(record[230]), 6)
- else:
- self.assertEqual(scapy.compat.orb(record[230]), 7)
- # sourceIPv6Address
- self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
- # destinationIPv6Address
- self.assertEqual(socket.inet_pton(socket.AF_INET6,
- self.compose_ip6(dst_addr,
- '64:ff9b::',
- 96)),
- record[28])
- # postNATSourceIPv4Address
- self.assertEqual(self.nat_addr_n, record[225])
- # postNATDestinationIPv4Address
- self.assertEqual(socket.inet_pton(socket.AF_INET, dst_addr),
- record[226])
- # protocolIdentifier
- self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
- # ingressVRFID
- self.assertEqual(struct.pack("!I", 0), record[234])
- # sourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
- # postNAPTSourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
- # destinationTransportPort
- self.assertEqual(struct.pack("!H", dst_port), record[11])
- # postNAPTDestinationTransportPort
- self.assertEqual(struct.pack("!H", dst_port), record[228])
-
- def verify_syslog_sess(self, data, is_add=True, is_ip6=False):
- message = data.decode('utf-8')
- try:
- message = SyslogMessage.parse(message)
- except ParseError as e:
- self.logger.error(e)
- raise
- else:
- self.assertEqual(message.severity, SyslogSeverity.info)
- self.assertEqual(message.appname, 'NAT')
- self.assertEqual(message.msgid, 'SADD' if is_add else 'SDEL')
- sd_params = message.sd.get('nsess')
- self.assertTrue(sd_params is not None)
- if is_ip6:
- self.assertEqual(sd_params.get('IATYP'), 'IPv6')
- self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip6)
- else:
- self.assertEqual(sd_params.get('IATYP'), 'IPv4')
- self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip4)
- self.assertTrue(sd_params.get('SSUBIX') is not None)
- self.assertEqual(sd_params.get('ISPORT'), "%d" % self.tcp_port_in)
- self.assertEqual(sd_params.get('XATYP'), 'IPv4')
- self.assertEqual(sd_params.get('XSADDR'), self.nat_addr)
- self.assertEqual(sd_params.get('XSPORT'), "%d" % self.tcp_port_out)
- self.assertEqual(sd_params.get('PROTO'), "%d" % IP_PROTOS.tcp)
- self.assertEqual(sd_params.get('SVLAN'), '0')
- self.assertEqual(sd_params.get('XDADDR'), self.pg1.remote_ip4)
- self.assertEqual(sd_params.get('XDPORT'),
- "%d" % self.tcp_external_port)
-
- def compose_ip6(self, ip4, pref, plen):
- """
- Compose IPv4-embedded IPv6 addresses
-
- :param ip4: IPv4 address
- :param pref: IPv6 prefix
- :param plen: IPv6 prefix length
- :returns: IPv4-embedded IPv6 addresses
- """
- pref_n = list(socket.inet_pton(socket.AF_INET6, pref))
- ip4_n = list(socket.inet_pton(socket.AF_INET, ip4))
- if plen == 32:
- pref_n[4] = ip4_n[0]
- pref_n[5] = ip4_n[1]
- pref_n[6] = ip4_n[2]
- pref_n[7] = ip4_n[3]
- elif plen == 40:
- pref_n[5] = ip4_n[0]
- pref_n[6] = ip4_n[1]
- pref_n[7] = ip4_n[2]
- pref_n[9] = ip4_n[3]
- elif plen == 48:
- pref_n[6] = ip4_n[0]
- pref_n[7] = ip4_n[1]
- pref_n[9] = ip4_n[2]
- pref_n[10] = ip4_n[3]
- elif plen == 56:
- pref_n[7] = ip4_n[0]
- pref_n[9] = ip4_n[1]
- pref_n[10] = ip4_n[2]
- pref_n[11] = ip4_n[3]
- elif plen == 64:
- pref_n[9] = ip4_n[0]
- pref_n[10] = ip4_n[1]
- pref_n[11] = ip4_n[2]
- pref_n[12] = ip4_n[3]
- elif plen == 96:
- pref_n[12] = ip4_n[0]
- pref_n[13] = ip4_n[1]
- pref_n[14] = ip4_n[2]
- pref_n[15] = ip4_n[3]
- packed_pref_n = b''.join([scapy.compat.chb(x) for x in pref_n])
- return socket.inet_ntop(socket.AF_INET6, packed_pref_n)
-
- def verify_ipfix_max_sessions(self, data, limit):
- """
- Verify IPFIX maximum session entries exceeded event
-
- :param data: Decoded IPFIX data records
- :param limit: Number of maximum session entries that can be created.
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- self.assertEqual(scapy.compat.orb(record[230]), 13)
- # natQuotaExceededEvent
- self.assertEqual(struct.pack("I", 1), record[466])
- # maxSessionEntries
- self.assertEqual(struct.pack("I", limit), record[471])
-
- def test_nat64_inside_interface_handles_neighbor_advertisement(self):
- """ NAT64 inside interface handles Neighbor Advertisement """
-
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg5.sw_if_index)
-
- # Try to send ping
- ping = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
- IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
- ICMPv6EchoRequest())
- pkts = [ping]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Wait for Neighbor Solicitation
- capture = self.pg5.get_capture(len(pkts))
- packet = capture[0]
- try:
- self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
- self.assertEqual(packet.haslayer(ICMPv6ND_NS), 1)
- tgt = packet[ICMPv6ND_NS].tgt
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # Send Neighbor Advertisement
- p = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
- IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
- ICMPv6ND_NA(tgt=tgt) /
- ICMPv6NDOptDstLLAddr(lladdr=self.pg5.remote_mac))
- pkts = [p]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Try to send ping again
- pkts = [ping]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Wait for ping reply
- capture = self.pg5.get_capture(len(pkts))
- packet = capture[0]
- try:
- self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
- self.assertEqual(packet[IPv6].dst, self.pg5.remote_ip6)
- self.assertEqual(packet.haslayer(ICMPv6EchoReply), 1)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_pool(self):
- """ Add/delete address to NAT64 pool """
- nat_addr = '1.2.3.4'
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
- end_addr=nat_addr,
- vrf_id=0xFFFFFFFF, is_add=1)
-
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 1)
- self.assertEqual(str(addresses[0].address), nat_addr)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
- end_addr=nat_addr,
- vrf_id=0xFFFFFFFF, is_add=0)
-
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 0)
-
- def test_interface(self):
- """ Enable/disable NAT64 feature on the interface """
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- interfaces = self.vapi.nat64_interface_dump()
- self.assertEqual(len(interfaces), 2)
- pg0_found = False
- pg1_found = False
- for intf in interfaces:
- if intf.sw_if_index == self.pg0.sw_if_index:
- self.assertEqual(intf.flags, self.config_flags.NAT_IS_INSIDE)
- pg0_found = True
- elif intf.sw_if_index == self.pg1.sw_if_index:
- self.assertEqual(intf.flags, self.config_flags.NAT_IS_OUTSIDE)
- pg1_found = True
- self.assertTrue(pg0_found)
- self.assertTrue(pg1_found)
-
- features = self.vapi.cli("show interface features pg0")
- self.assertIn('nat64-in2out', features)
- features = self.vapi.cli("show interface features pg1")
- self.assertIn('nat64-out2in', features)
-
- self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
- sw_if_index=self.pg1.sw_if_index)
-
- interfaces = self.vapi.nat64_interface_dump()
- self.assertEqual(len(interfaces), 0)
-
- def test_static_bib(self):
- """ Add/delete static BIB entry """
- in_addr = '2001:db8:85a3::8a2e:370:7334'
- out_addr = '10.1.1.3'
- in_port = 1234
- out_port = 5678
- proto = IP_PROTOS.tcp
-
- self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
- i_port=in_port, o_port=out_port,
- proto=proto, vrf_id=0, is_add=1)
- bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
- static_bib_num = 0
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- static_bib_num += 1
- self.assertEqual(str(bibe.i_addr), in_addr)
- self.assertEqual(str(bibe.o_addr), out_addr)
- self.assertEqual(bibe.i_port, in_port)
- self.assertEqual(bibe.o_port, out_port)
- self.assertEqual(static_bib_num, 1)
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
- i_port=in_port, o_port=out_port,
- proto=proto, vrf_id=0, is_add=0)
- bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
- static_bib_num = 0
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- static_bib_num += 1
- self.assertEqual(static_bib_num, 0)
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 0)
-
- def test_set_timeouts(self):
- """ Set NAT64 timeouts """
- # verify default values
- timeouts = self.vapi.nat64_get_timeouts()
- self.assertEqual(timeouts.udp, 300)
- self.assertEqual(timeouts.icmp, 60)
- self.assertEqual(timeouts.tcp_transitory, 240)
- self.assertEqual(timeouts.tcp_established, 7440)
-
- # set and verify custom values
- self.vapi.nat64_set_timeouts(udp=200, tcp_established=7450,
- tcp_transitory=250, icmp=30)
- timeouts = self.vapi.nat64_get_timeouts()
- self.assertEqual(timeouts.udp, 200)
- self.assertEqual(timeouts.icmp, 30)
- self.assertEqual(timeouts.tcp_transitory, 250)
- self.assertEqual(timeouts.tcp_established, 7450)
-
- def test_dynamic(self):
- """ NAT64 dynamic translation test """
- self.tcp_port_in = 6303
- self.udp_port_in = 6304
- self.icmp_id_in = 6305
-
- ses_num_start = self.nat64_get_ses_num()
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- tcpn = self.statistics.get_counter('/nat64/in2out/tcp')[0]
- udpn = self.statistics.get_counter('/nat64/in2out/udp')[0]
- icmpn = self.statistics.get_counter('/nat64/in2out/icmp')[0]
- drops = self.statistics.get_counter('/nat64/in2out/drops')[0]
-
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- if_idx = self.pg0.sw_if_index
- cnt = self.statistics.get_counter('/nat64/in2out/tcp')[0]
- self.assertEqual(cnt[if_idx] - tcpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/in2out/udp')[0]
- self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/in2out/icmp')[0]
- self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/in2out/drops')[0]
- self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
-
- # out2in
- tcpn = self.statistics.get_counter('/nat64/out2in/tcp')[0]
- udpn = self.statistics.get_counter('/nat64/out2in/udp')[0]
- icmpn = self.statistics.get_counter('/nat64/out2in/icmp')[0]
- drops = self.statistics.get_counter('/nat64/out2in/drops')[0]
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- if_idx = self.pg1.sw_if_index
- cnt = self.statistics.get_counter('/nat64/out2in/tcp')[0]
- self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
- cnt = self.statistics.get_counter('/nat64/out2in/udp')[0]
- self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/out2in/icmp')[0]
- self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/out2in/drops')[0]
- self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
-
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 3)
- sessions = self.statistics.get_counter('/nat64/total-sessions')
- self.assertEqual(sessions[0][0], 3)
-
- # in2out
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- ses_num_end = self.nat64_get_ses_num()
-
- self.assertEqual(ses_num_end - ses_num_start, 3)
-
- # tenant with specific VRF
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
- end_addr=self.vrf1_nat_addr,
- vrf_id=self.vrf1_id, is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg2.sw_if_index)
-
- pkts = self.create_stream_in_ip6(self.pg2, self.pg1)
- self.pg2.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg2.remote_ip6)
-
- def test_static(self):
- """ NAT64 static translation test """
- self.tcp_port_in = 60303
- self.udp_port_in = 60304
- self.icmp_id_in = 60305
- self.tcp_port_out = 60303
- self.udp_port_out = 60304
- self.icmp_id_out = 60305
-
- ses_num_start = self.nat64_get_ses_num()
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.tcp_port_in,
- o_port=self.tcp_port_out,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.udp_port_in,
- o_port=self.udp_port_out,
- proto=IP_PROTOS.udp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.icmp_id_in,
- o_port=self.icmp_id_out,
- proto=IP_PROTOS.icmp, vrf_id=0,
- is_add=1)
-
- # in2out
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4, same_port=True)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- ses_num_end = self.nat64_get_ses_num()
-
- self.assertEqual(ses_num_end - ses_num_start, 3)
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_timeout(self):
- """ NAT64 session timeout """
- self.icmp_id_in = 1234
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat64_set_timeouts(udp=300, tcp_established=5,
- tcp_transitory=5,
- icmp=5)
-
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
-
- ses_num_before_timeout = self.nat64_get_ses_num()
-
- sleep(15)
-
- # ICMP and TCP session after timeout
- ses_num_after_timeout = self.nat64_get_ses_num()
- self.assertEqual(ses_num_before_timeout - ses_num_after_timeout, 2)
-
- def test_icmp_error(self):
- """ NAT64 ICMP Error message translation """
- self.tcp_port_in = 6303
- self.udp_port_in = 6304
- self.icmp_id_in = 6305
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # send some packets to create sessions
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture_ip4 = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture_ip4,
- nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture_ip6 = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture_ip6, ip[IPv6].src,
- self.pg0.remote_ip6)
-
- # in2out
- pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=ip[IPv6].src) /
- ICMPv6DestUnreach(code=1) /
- packet[IPv6] for packet in capture_ip6]
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IP].src, self.nat_addr)
- self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
- self.assertEqual(packet[ICMP].type, 3)
- self.assertEqual(packet[ICMP].code, 13)
- inner = packet[IPerror]
- self.assertEqual(inner.src, self.pg1.remote_ip4)
- self.assertEqual(inner.dst, self.nat_addr)
- self.assert_packet_checksums_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].dport, self.tcp_port_out)
- elif inner.haslayer(UDPerror):
- self.assertEqual(inner[UDPerror].dport, self.udp_port_out)
- else:
- self.assertEqual(inner[ICMPerror].id, self.icmp_id_out)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # out2in
- pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- ICMP(type=3, code=13) /
- packet[IP] for packet in capture_ip4]
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, ip.src)
- self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
- icmp = packet[ICMPv6DestUnreach]
- self.assertEqual(icmp.code, 1)
- inner = icmp[IPerror6]
- self.assertEqual(inner.src, self.pg0.remote_ip6)
- self.assertEqual(inner.dst, ip.src)
- self.assert_icmpv6_checksum_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].sport, self.tcp_port_in)
- elif inner.haslayer(UDPerror):
- self.assertEqual(inner[UDPerror].sport, self.udp_port_in)
- else:
- self.assertEqual(inner[ICMPv6EchoRequest].id,
- self.icmp_id_in)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_hairpinning(self):
- """ NAT64 hairpinning """
-
- client = self.pg0.remote_hosts[0]
- server = self.pg0.remote_hosts[1]
- server_tcp_in_port = 22
- server_tcp_out_port = 4022
- server_udp_in_port = 23
- server_udp_out_port = 4023
- client_tcp_in_port = 1234
- client_udp_in_port = 1235
- client_tcp_out_port = 0
- client_udp_out_port = 0
- ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
- nat_addr_ip6 = ip.src
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_tcp_in_port,
- o_port=server_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_udp_in_port,
- o_port=server_udp_out_port,
- proto=IP_PROTOS.udp, vrf_id=0,
- is_add=1)
-
- # client to server
- pkts = []
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
- pkts.append(p)
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- UDP(sport=client_udp_in_port, dport=server_udp_out_port))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- self.assert_packet_checksums_valid(packet)
- if packet.haslayer(TCP):
- self.assertNotEqual(packet[TCP].sport, client_tcp_in_port)
- self.assertEqual(packet[TCP].dport, server_tcp_in_port)
- client_tcp_out_port = packet[TCP].sport
- else:
- self.assertNotEqual(packet[UDP].sport, client_udp_in_port)
- self.assertEqual(packet[UDP].dport, server_udp_in_port)
- client_udp_out_port = packet[UDP].sport
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # server to client
- pkts = []
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=nat_addr_ip6) /
- TCP(sport=server_tcp_in_port, dport=client_tcp_out_port))
- pkts.append(p)
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=nat_addr_ip6) /
- UDP(sport=server_udp_in_port, dport=client_udp_out_port))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, client.ip6)
- self.assert_packet_checksums_valid(packet)
- if packet.haslayer(TCP):
- self.assertEqual(packet[TCP].sport, server_tcp_out_port)
- self.assertEqual(packet[TCP].dport, client_tcp_in_port)
- else:
- self.assertEqual(packet[UDP].sport, server_udp_out_port)
- self.assertEqual(packet[UDP].dport, client_udp_in_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # ICMP error
- pkts = []
- pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- ICMPv6DestUnreach(code=1) /
- packet[IPv6] for packet in capture]
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- icmp = packet[ICMPv6DestUnreach]
- self.assertEqual(icmp.code, 1)
- inner = icmp[IPerror6]
- self.assertEqual(inner.src, server.ip6)
- self.assertEqual(inner.dst, nat_addr_ip6)
- self.assert_packet_checksums_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].sport, server_tcp_in_port)
- self.assertEqual(inner[TCPerror].dport,
- client_tcp_out_port)
- else:
- self.assertEqual(inner[UDPerror].sport, server_udp_in_port)
- self.assertEqual(inner[UDPerror].dport,
- client_udp_out_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_prefix(self):
- """ NAT64 Network-Specific Prefix """
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
- end_addr=self.vrf1_nat_addr,
- vrf_id=self.vrf1_id, is_add=1)
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg2.sw_if_index)
-
- # Add global prefix
- global_pref64 = "2001:db8::"
- global_pref64_len = 32
- global_pref64_str = "{}/{}".format(global_pref64, global_pref64_len)
- self.vapi.nat64_add_del_prefix(prefix=global_pref64_str, vrf_id=0,
- is_add=1)
-
- prefix = self.vapi.nat64_prefix_dump()
- self.assertEqual(len(prefix), 1)
- self.assertEqual(str(prefix[0].prefix), global_pref64_str)
- self.assertEqual(prefix[0].vrf_id, 0)
-
- # Add tenant specific prefix
- vrf1_pref64 = "2001:db8:122:300::"
- vrf1_pref64_len = 56
- vrf1_pref64_str = "{}/{}".format(vrf1_pref64, vrf1_pref64_len)
- self.vapi.nat64_add_del_prefix(prefix=vrf1_pref64_str,
- vrf_id=self.vrf1_id, is_add=1)
-
- prefix = self.vapi.nat64_prefix_dump()
- self.assertEqual(len(prefix), 2)
-
- # Global prefix
- pkts = self.create_stream_in_ip6(self.pg0,
- self.pg1,
- pref=global_pref64,
- plen=global_pref64_len)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- dst_ip = self.compose_ip6(self.pg1.remote_ip4,
- global_pref64,
- global_pref64_len)
- self.verify_capture_in_ip6(capture, dst_ip, self.pg0.remote_ip6)
-
- # Tenant specific prefix
- pkts = self.create_stream_in_ip6(self.pg2,
- self.pg1,
- pref=vrf1_pref64,
- plen=vrf1_pref64_len)
- self.pg2.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- dst_ip = self.compose_ip6(self.pg1.remote_ip4,
- vrf1_pref64,
- vrf1_pref64_len)
- self.verify_capture_in_ip6(capture, dst_ip, self.pg2.remote_ip6)
-
- def test_unknown_proto(self):
- """ NAT64 translate packet with unknown protocol """
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- remote_ip6 = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
-
- # in2out
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_ip6) /
- TCP(sport=self.tcp_port_in, dport=20))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_ip6, nh=47) /
- GRE() /
- IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IP].src, self.nat_addr)
- self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
- self.assertEqual(packet.haslayer(GRE), 1)
- self.assert_packet_checksums_valid(packet)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # out2in
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- GRE() /
- IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IPv6].src, remote_ip6)
- self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
- self.assertEqual(packet[IPv6].nh, 47)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_hairpinning_unknown_proto(self):
- """ NAT64 translate packet with unknown protocol - hairpinning """
-
- client = self.pg0.remote_hosts[0]
- server = self.pg0.remote_hosts[1]
- server_tcp_in_port = 22
- server_tcp_out_port = 4022
- client_tcp_in_port = 1234
- client_tcp_out_port = 1235
- server_nat_ip = "10.0.0.100"
- client_nat_ip = "10.0.0.110"
- server_nat_ip6 = self.compose_ip6(server_nat_ip, '64:ff9b::', 96)
- client_nat_ip6 = self.compose_ip6(client_nat_ip, '64:ff9b::', 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=server_nat_ip,
- end_addr=client_nat_ip,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=server_nat_ip,
- i_port=server_tcp_in_port,
- o_port=server_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=server_nat_ip, i_port=0,
- o_port=0,
- proto=IP_PROTOS.gre, vrf_id=0,
- is_add=1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=client.ip6n,
- o_addr=client_nat_ip,
- i_port=client_tcp_in_port,
- o_port=client_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- # client to server
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=server_nat_ip6) /
- TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=server_nat_ip6, nh=IP_PROTOS.gre) /
- GRE() /
- IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IPv6].src, client_nat_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # server to client
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=client_nat_ip6, nh=IP_PROTOS.gre) /
- GRE() /
- IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IPv6].src, server_nat_ip6)
- self.assertEqual(packet[IPv6].dst, client.ip6)
- self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_one_armed_nat64(self):
- """ One armed NAT64 """
- external_port = 0
- remote_host_ip6 = self.compose_ip6(self.pg3.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg3.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg3.sw_if_index)
-
- # in2out
- p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
- IPv6(src=self.pg3.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- self.pg3.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg3.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.src, self.nat_addr)
- self.assertEqual(ip.dst, self.pg3.remote_ip4)
- self.assertNotEqual(tcp.sport, 12345)
- external_port = tcp.sport
- self.assertEqual(tcp.dport, 80)
- self.assert_packet_checksums_valid(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- # out2in
- p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
- IP(src=self.pg3.remote_ip4, dst=self.nat_addr) /
- TCP(sport=80, dport=external_port))
- self.pg3.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg3.get_capture(1)
- p = capture[0]
- try:
- ip = p[IPv6]
- tcp = p[TCP]
- self.assertEqual(ip.src, remote_host_ip6)
- self.assertEqual(ip.dst, self.pg3.remote_ip6)
- self.assertEqual(tcp.sport, 80)
- self.assertEqual(tcp.dport, 12345)
- self.assert_packet_checksums_valid(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- def test_frag_in_order(self):
- """ NAT64 translate fragments arriving in order """
- self.tcp_port_in = random.randint(1025, 65535)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- data = b'a' * 200
- pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
- self.tcp_port_in, 20, data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
-
- # out2in
- data = b"A" * 4 + b"b" * 16 + b"C" * 3
- pkts = self.create_stream_frag(self.pg1,
- self.nat_addr,
- 20,
- self.tcp_port_out,
- data)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- self.logger.debug(ppc("Captured:", frags))
- src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
- p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
-
- def test_reass_hairpinning(self):
- """ NAT64 fragments hairpinning """
- data = b'a' * 200
- server = self.pg0.remote_hosts[1]
- server_in_port = random.randint(1025, 65535)
- server_out_port = random.randint(1025, 65535)
- client_in_port = random.randint(1025, 65535)
- ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
- nat_addr_ip6 = ip.src
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # add static BIB entry for server
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_in_port,
- o_port=server_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- # send packet from host to server
- pkts = self.create_stream_frag_ip6(self.pg0,
- self.nat_addr,
- client_in_port,
- server_out_port,
- data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- self.logger.debug(ppc("Captured:", frags))
- p = self.reass_frags_and_verify_ip6(frags, nat_addr_ip6, server.ip6)
- self.assertNotEqual(p[TCP].sport, client_in_port)
- self.assertEqual(p[TCP].dport, server_in_port)
- self.assertEqual(data, p[Raw].load)
-
- def test_frag_out_of_order(self):
- """ NAT64 translate fragments arriving out of order """
- self.tcp_port_in = random.randint(1025, 65535)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- data = b'a' * 200
- pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
- self.tcp_port_in, 20, data)
- pkts.reverse()
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
-
- # out2in
- data = b"A" * 4 + b"B" * 16 + b"C" * 3
- pkts = self.create_stream_frag(self.pg1,
- self.nat_addr,
- 20,
- self.tcp_port_out,
- data)
- pkts.reverse()
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
- p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
-
- def test_interface_addr(self):
- """ Acquire NAT64 pool addresses from interface """
- self.vapi.nat64_add_del_interface_addr(
- is_add=1,
- sw_if_index=self.pg4.sw_if_index)
-
- # no address in NAT64 pool
- addresses = self.vapi.nat44_address_dump()
- self.assertEqual(0, len(addresses))
-
- # configure interface address and check NAT64 address pool
- self.pg4.config_ip4()
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 1)
-
- self.assertEqual(str(addresses[0].address),
- self.pg4.local_ip4)
-
- # remove interface address and check NAT64 address pool
- self.pg4.unconfig_ip4()
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(0, len(addresses))
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_ipfix_max_bibs_sessions(self):
- """ IPFIX logging maximum session and BIB entries exceeded """
- max_bibs = 1280
- max_sessions = 2560
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- pkts = []
- src = ""
- for i in range(0, max_bibs):
- src = "fd01:aa::%x" % (i)
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- pkts.append(p)
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=22))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(max_sessions)
-
- self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
- src_address=self.pg3.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=1)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=25))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(7)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_sessions(data, max_sessions)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(1)
- # verify events in data set
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_bibs(data, max_bibs)
-
- def test_ipfix_bib_ses(self):
- """ IPFIX logging NAT64 BIB/session create and delete events """
- self.tcp_port_in = random.randint(1025, 65535)
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
- src_address=self.pg3.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=1)
-
- # Create
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=self.tcp_port_in, dport=25))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- self.tcp_port_out = p[0][TCP].sport
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(8)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- if scapy.compat.orb(data[0][230]) == 10:
- self.verify_ipfix_bib(data, 1, self.pg0.remote_ip6)
- elif scapy.compat.orb(data[0][230]) == 6:
- self.verify_ipfix_nat64_ses(data,
- 1,
- self.pg0.remote_ip6,
- self.pg1.remote_ip4,
- 25)
- else:
- self.logger.error(ppp("Unexpected or invalid packet: ", p))
-
- # Delete
- self.pg_enable_capture(self.pg_interfaces)
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=0)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(2)
- # verify events in data set
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- if scapy.compat.orb(data[0][230]) == 11:
- self.verify_ipfix_bib(data, 0, self.pg0.remote_ip6)
- elif scapy.compat.orb(data[0][230]) == 7:
- self.verify_ipfix_nat64_ses(data,
- 0,
- self.pg0.remote_ip6,
- self.pg1.remote_ip4,
- 25)
- else:
- self.logger.error(ppp("Unexpected or invalid packet: ", p))
-
- def test_syslog_sess(self):
- """ Test syslog session creation and deletion """
- self.tcp_port_in = random.randint(1025, 65535)
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.syslog_set_filter(
- self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_INFO)
- self.vapi.syslog_set_sender(self.pg3.local_ip4, self.pg3.remote_ip4)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- self.tcp_port_out = p[0][TCP].sport
- capture = self.pg3.get_capture(1)
- self.verify_syslog_sess(capture[0][Raw].load, is_ip6=True)
-
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=0)
- capture = self.pg3.get_capture(1)
- self.verify_syslog_sess(capture[0][Raw].load, False, True)
-
- def nat64_get_ses_num(self):
- """
- Return number of active NAT64 sessions.
- """
- st = self.vapi.nat64_st_dump(proto=255)
- return len(st)
-
- def clear_nat64(self):
- """
- Clear NAT64 configuration.
- """
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=0)
- self.ipfix_src_port = 4739
- self.ipfix_domain_id = 1
-
- self.vapi.syslog_set_filter(
- self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_EMERG)
-
- self.vapi.nat64_set_timeouts(udp=300, tcp_established=7440,
- tcp_transitory=240, icmp=60)
-
- interfaces = self.vapi.nat64_interface_dump()
- for intf in interfaces:
- self.vapi.nat64_add_del_interface(is_add=0, flags=intf.flags,
- sw_if_index=intf.sw_if_index)
-
- bib = self.vapi.nat64_bib_dump(proto=255)
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- self.vapi.nat64_add_del_static_bib(i_addr=bibe.i_addr,
- o_addr=bibe.o_addr,
- i_port=bibe.i_port,
- o_port=bibe.o_port,
- proto=bibe.proto,
- vrf_id=bibe.vrf_id,
- is_add=0)
-
- adresses = self.vapi.nat64_pool_addr_dump()
- for addr in adresses:
- self.vapi.nat64_add_del_pool_addr_range(start_addr=addr.address,
- end_addr=addr.address,
- vrf_id=addr.vrf_id,
- is_add=0)
-
- prefixes = self.vapi.nat64_prefix_dump()
- for prefix in prefixes:
- self.vapi.nat64_add_del_prefix(prefix=str(prefix.prefix),
- vrf_id=prefix.vrf_id, is_add=0)
-
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 0)
- sessions = self.statistics.get_counter('/nat64/total-sessions')
- self.assertEqual(sessions[0][0], 0)
-
-
-if __name__ == '__main__':
- unittest.main(testRunner=VppTestRunner)