self.assertEqual(new['ICMPv6EchoReply'].cksum,
pkt['ICMPv6EchoReply'].cksum)
- def create_stream_in(self, in_if, out_if, ttl=64):
+ def create_stream_in(self, in_if, out_if, dst_ip=None, ttl=64):
"""
Create packet stream for inside network
:param in_if: Inside interface
:param out_if: Outside interface
+ :param dst_ip: Destination address
:param ttl: TTL of generated packets
"""
+ if dst_ip is None:
+ dst_ip = out_if.remote_ip4
+
pkts = []
# TCP
p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+ IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
TCP(sport=self.tcp_port_in, dport=20))
pkts.append(p)
# UDP
p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+ IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
UDP(sport=self.udp_port_in, dport=20))
pkts.append(p)
# ICMP
p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
+ IP(src=in_if.remote_ip4, dst=dst_ip, ttl=ttl) /
ICMP(id=self.icmp_id_in, type='echo-request'))
pkts.append(p)
pref_n[15] = ip4_n[3]
return socket.inet_ntop(socket.AF_INET6, ''.join(pref_n))
+ def extract_ip4(self, ip6, plen):
+ """
+ Extract IPv4 address embedded in IPv6 addresses
+
+ :param ip6: IPv6 address
+ :param plen: IPv6 prefix length
+ :returns: extracted IPv4 address
+ """
+ ip6_n = list(socket.inet_pton(socket.AF_INET6, ip6))
+ ip4_n = [None] * 4
+ if plen == 32:
+ ip4_n[0] = ip6_n[4]
+ ip4_n[1] = ip6_n[5]
+ ip4_n[2] = ip6_n[6]
+ ip4_n[3] = ip6_n[7]
+ elif plen == 40:
+ ip4_n[0] = ip6_n[5]
+ ip4_n[1] = ip6_n[6]
+ ip4_n[2] = ip6_n[7]
+ ip4_n[3] = ip6_n[9]
+ elif plen == 48:
+ ip4_n[0] = ip6_n[6]
+ ip4_n[1] = ip6_n[7]
+ ip4_n[2] = ip6_n[9]
+ ip4_n[3] = ip6_n[10]
+ elif plen == 56:
+ ip4_n[0] = ip6_n[7]
+ ip4_n[1] = ip6_n[9]
+ ip4_n[2] = ip6_n[10]
+ ip4_n[3] = ip6_n[11]
+ elif plen == 64:
+ ip4_n[0] = ip6_n[9]
+ ip4_n[1] = ip6_n[10]
+ ip4_n[2] = ip6_n[11]
+ ip4_n[3] = ip6_n[12]
+ elif plen == 96:
+ ip4_n[0] = ip6_n[12]
+ ip4_n[1] = ip6_n[13]
+ ip4_n[2] = ip6_n[14]
+ ip4_n[3] = ip6_n[15]
+ return socket.inet_ntop(socket.AF_INET, ''.join(ip4_n))
+
def create_stream_in_ip6(self, in_if, out_if, hlim=64, pref=None, plen=0):
"""
Create IPv6 packet stream for inside network
return pkts
- def create_stream_out(self, out_if, dst_ip=None, ttl=64):
+ 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=self.tcp_port_out, sport=20))
+ TCP(dport=tcp_port, sport=20))
pkts.append(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=self.udp_port_out, sport=20))
+ 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=self.icmp_id_out, type='echo-reply'))
+ ICMP(id=icmp_id, type='echo-reply'))
+ pkts.append(p)
+
+ return pkts
+
+ def create_stream_out_ip6(self, out_if, src_ip, dst_ip, hl=64):
+ """
+ Create packet stream for outside network
+
+ :param out_if: Outside interface
+ :param dst_ip: Destination IP address (Default use global NAT address)
+ :param hl: HL of generated packets
+ """
+ pkts = []
+ # TCP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IPv6(src=src_ip, dst=dst_ip, hlim=hl) /
+ TCP(dport=self.tcp_port_out, sport=20))
+ pkts.append(p)
+
+ # UDP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IPv6(src=src_ip, dst=dst_ip, hlim=hl) /
+ UDP(dport=self.udp_port_out, sport=20))
+ pkts.append(p)
+
+ # ICMP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IPv6(src=src_ip, dst=dst_ip, hlim=hl) /
+ ICMPv6EchoReply(id=self.icmp_id_out))
pkts.append(p)
return pkts
def verify_capture_out(self, capture, nat_ip=None, same_port=False,
- packet_num=3, dst_ip=None):
+ packet_num=3, dst_ip=None, is_ip6=False):
"""
Verify captured packets on outside network
:param same_port: Sorce port number is not translated (Default False)
:param packet_num: Expected number of packets (Default 3)
: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
self.assertEqual(packet_num, len(capture))
for packet in capture:
try:
- self.check_ip_checksum(packet)
- self.assertEqual(packet[IP].src, nat_ip)
+ if not is_ip6:
+ self.check_ip_checksum(packet)
+ self.assertEqual(packet[IP46].src, nat_ip)
if dst_ip is not None:
- self.assertEqual(packet[IP].dst, dst_ip)
+ self.assertEqual(packet[IP46].dst, dst_ip)
if packet.haslayer(TCP):
if same_port:
self.assertEqual(packet[TCP].sport, self.tcp_port_in)
self.udp_port_out = packet[UDP].sport
else:
if same_port:
- self.assertEqual(packet[ICMP].id, self.icmp_id_in)
+ self.assertEqual(packet[ICMP46].id, self.icmp_id_in)
else:
- self.assertNotEqual(packet[ICMP].id, self.icmp_id_in)
- self.icmp_id_out = packet[ICMP].id
- self.check_icmp_checksum(packet)
+ self.assertNotEqual(packet[ICMP46].id, self.icmp_id_in)
+ self.icmp_id_out = packet[ICMP46].id
+ if is_ip6:
+ self.check_icmpv6_checksum(packet)
+ else:
+ self.check_icmp_checksum(packet)
except:
self.logger.error(ppp("Unexpected or invalid packet "
"(outside network):", packet))
raise
+ def verify_capture_out_ip6(self, capture, nat_ip, same_port=False,
+ packet_num=3, dst_ip=None):
+ """
+ Verify captured packets on outside network
+
+ :param capture: Captured packets
+ :param nat_ip: Translated IP address
+ :param same_port: Sorce port number is not translated (Default False)
+ :param packet_num: Expected number of packets (Default 3)
+ :param dst_ip: Destination IP address (Default do not verify)
+ """
+ return self.verify_capture_out(capture, nat_ip, same_port, packet_num,
+ dst_ip, True)
+
def verify_capture_in(self, capture, in_if, packet_num=3):
"""
Verify captured packets on inside network
# natPoolID
self.assertEqual(struct.pack("!I", 0), record[283])
+ 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(ord(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 1), record[466])
+ # maxSessionEntries
+ self.assertEqual(struct.pack("I", limit), record[471])
+
+ 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(ord(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 2), record[466])
+ # maxBIBEntries
+ self.assertEqual(struct.pack("I", limit), record[472])
+
+ def verify_ipfix_max_fragments_ip6(self, data, limit, src_addr):
+ """
+ Verify IPFIX maximum IPv6 fragments pending reassembly exceeded event
+
+ :param data: Decoded IPFIX data records
+ :param limit: Number of maximum fragments pending reassembly
+ :param src_addr: IPv6 source address
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ self.assertEqual(ord(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 5), record[466])
+ # maxFragmentsPendingReassembly
+ self.assertEqual(struct.pack("I", limit), record[475])
+ # sourceIPv6Address
+ self.assertEqual(src_addr, record[27])
+
+ def verify_ipfix_max_fragments_ip4(self, data, limit, src_addr):
+ """
+ Verify IPFIX maximum IPv4 fragments pending reassembly exceeded event
+
+ :param data: Decoded IPFIX data records
+ :param limit: Number of maximum fragments pending reassembly
+ :param src_addr: IPv4 source address
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ self.assertEqual(ord(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 5), record[466])
+ # maxFragmentsPendingReassembly
+ self.assertEqual(struct.pack("I", limit), record[475])
+ # sourceIPv4Address
+ self.assertEqual(src_addr, record[8])
+
+ 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(ord(record[230]), 10)
+ else:
+ self.assertEqual(ord(record[230]), 11)
+ # sourceIPv6Address
+ self.assertEqual(src_addr, record[27])
+ # postNATSourceIPv4Address
+ self.assertEqual(self.nat_addr_n, record[225])
+ # protocolIdentifier
+ self.assertEqual(IP_PROTOS.tcp, ord(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(ord(record[230]), 6)
+ else:
+ self.assertEqual(ord(record[230]), 7)
+ # sourceIPv6Address
+ self.assertEqual(src_addr, 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, ord(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])
+
class TestNAT44(MethodHolder):
""" NAT44 Test Cases """
cls.icmp_id_in = 6305
cls.icmp_id_out = 6305
cls.nat_addr = '10.0.0.3'
+ cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
cls.ipfix_src_port = 4739
cls.ipfix_domain_id = 1
interfaces = self.vapi.nat44_interface_addr_dump()
for intf in interfaces:
- self.vapi.nat44_add_interface_addr(intf.sw_if_index, is_add=0)
+ self.vapi.nat44_add_interface_addr(intf.sw_if_index,
+ twice_nat=intf.twice_nat,
+ is_add=0)
self.vapi.nat_ipfix(enable=0, src_port=self.ipfix_src_port,
domain_id=self.ipfix_domain_id)
addr_only=sm.addr_only,
vrf_id=sm.vrf_id,
protocol=sm.protocol,
+ twice_nat=sm.twice_nat,
is_add=0)
lb_static_mappings = self.vapi.nat44_lb_static_mapping_dump()
lb_sm.external_addr,
lb_sm.external_port,
lb_sm.protocol,
- lb_sm.vrf_id,
+ vrf_id=lb_sm.vrf_id,
+ twice_nat=lb_sm.twice_nat,
is_add=0,
local_num=0,
locals=[])
for addr in adresses:
self.vapi.nat44_add_del_address_range(addr.ip_address,
addr.ip_address,
+ twice_nat=addr.twice_nat,
is_add=0)
self.vapi.nat_set_reass()
def nat44_add_static_mapping(self, local_ip, external_ip='0.0.0.0',
local_port=0, external_port=0, vrf_id=0,
is_add=1, external_sw_if_index=0xFFFFFFFF,
- proto=0):
+ proto=0, twice_nat=0):
"""
Add/delete NAT44 static mapping
:param is_add: 1 if add, 0 if delete (Default add)
:param external_sw_if_index: External interface instead of IP address
:param proto: IP protocol (Mandatory if port specified)
+ :param twice_nat: 1 if translate external host address and port
"""
addr_only = 1
if local_port and external_port:
addr_only,
vrf_id,
proto,
+ twice_nat,
is_add)
- def nat44_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF):
+ def nat44_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF, twice_nat=0):
"""
Add/delete NAT44 address
:param ip: IP address
:param is_add: 1 if add, 0 if delete (Default add)
+ :param twice_nat: twice NAT address for extenal hosts
"""
nat_addr = socket.inet_pton(socket.AF_INET, ip)
self.vapi.nat44_add_del_address_range(nat_addr, nat_addr, is_add,
- vrf_id=vrf_id)
+ vrf_id=vrf_id,
+ twice_nat=twice_nat)
def test_dynamic(self):
""" NAT44 dynamic translation test """
self.verify_capture_out(capture, same_port=True, packet_num=1)
self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp)
+ def test_forwarding(self):
+ """ NAT44 forwarding test """
+
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_forwarding_enable_disable(1)
+
+ real_ip = self.pg0.remote_ip4n
+ alias_ip = self.nat_addr_n
+ self.vapi.nat44_add_del_static_mapping(local_ip=real_ip,
+ external_ip=alias_ip)
+
+ 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)
+
+ # 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
+
+ finally:
+ self.vapi.nat44_forwarding_enable_disable(0)
+ self.vapi.nat44_add_del_static_mapping(local_ip=real_ip,
+ external_ip=alias_ip,
+ is_add=0)
+
def test_static_in(self):
""" 1:1 NAT initialized from inside network """
self.verify_capture_out(capture)
self.nat44_add_address(self.nat_addr, is_add=0)
self.vapi.cli("ipfix flush") # FIXME this should be an API call
- capture = self.pg3.get_capture(3)
+ capture = self.pg3.get_capture(9)
ipfix = IPFIXDecoder()
# first load template
for p in capture:
self.pg_start()
capture = self.pg1.get_capture(0)
self.vapi.cli("ipfix flush") # FIXME this should be an API call
- capture = self.pg3.get_capture(3)
+ capture = self.pg3.get_capture(9)
ipfix = IPFIXDecoder()
# first load template
for p in capture:
data = ipfix.decode_data_set(p.getlayer(Set))
self.verify_ipfix_addr_exhausted(data)
+ @unittest.skipUnless(running_extended_tests(), "part of extended tests")
+ def test_ipfix_max_sessions(self):
+ """ IPFIX logging maximum session entries exceeded """
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ nat44_config = self.vapi.nat_show_config()
+ max_sessions = 10 * nat44_config.translation_buckets
+
+ pkts = []
+ for i in range(0, max_sessions):
+ src = "10.10.%u.%u" % ((i & 0xFF00) >> 8, i & 0xFF)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=src, dst=self.pg1.remote_ip4) /
+ TCP(sport=1025))
+ 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_ip4n,
+ src_address=self.pg3.local_ip4n,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port)
+
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=1025))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(0)
+ self.vapi.cli("ipfix flush") # FIXME this should be an API call
+ capture = self.pg3.get_capture(9)
+ ipfix = IPFIXDecoder()
+ # first load template
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Template):
+ ipfix.add_template(p.getlayer(Template))
+ # verify events in data set
+ for p in capture:
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ self.verify_ipfix_max_sessions(data, max_sessions)
+
def test_pool_addr_fib(self):
""" NAT44 add pool addresses to FIB """
static_addr = '10.0.0.10'
nat_ip2 = "10.0.0.11"
self.nat44_add_address(nat_ip1)
- self.nat44_add_address(nat_ip2)
+ self.nat44_add_address(nat_ip2, vrf_id=99)
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index)
self.vapi.nat44_interface_add_del_feature(self.pg2.sw_if_index,
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
- self.vapi.cli("nat44 addr-port-assignment-alg map-e psid 10 "
+ self.vapi.cli("nat addr-port-assignment-alg map-e psid 10 "
"psid-offset 6 psid-len 6")
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
- def tearDown(self):
- super(TestNAT44, self).tearDown()
- if not self.vpp_dead:
- self.logger.info(self.vapi.cli("show nat44 verbose"))
- self.logger.info(self.vapi.cli("show nat virtual-reassembly"))
- self.vapi.cli("nat44 addr-port-assignment-alg default")
- self.clear_nat44()
+ def test_twice_nat(self):
+ """ Twice NAT44 """
+ twice_nat_addr = '10.0.1.3'
+ port_in = 8080
+ port_out = 80
+ eh_port_out = 4567
+ eh_port_in = 0
+ self.nat44_add_address(self.nat_addr)
+ self.nat44_add_address(twice_nat_addr, twice_nat=1)
+ self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+ port_in, port_out, proto=IP_PROTOS.tcp,
+ twice_nat=1)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=eh_port_out, dport=port_out))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg0.remote_ip4)
+ self.assertEqual(ip.src, twice_nat_addr)
+ self.assertEqual(tcp.dport, port_in)
+ self.assertNotEqual(tcp.sport, eh_port_out)
+ eh_port_in = tcp.sport
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
-class TestDeterministicNAT(MethodHolder):
- """ Deterministic NAT Test Cases """
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
+ TCP(sport=port_in, dport=eh_port_in))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg1.remote_ip4)
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(tcp.dport, eh_port_out)
+ self.assertEqual(tcp.sport, port_out)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
- @classmethod
- def setUpConstants(cls):
- super(TestDeterministicNAT, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "deterministic", "}"])
+ def test_twice_nat_lb(self):
+ """ Twice NAT44 local service load balancing """
+ external_addr_n = socket.inet_pton(socket.AF_INET, self.nat_addr)
+ twice_nat_addr = '10.0.1.3'
+ local_port = 8080
+ external_port = 80
+ eh_port_out = 4567
+ eh_port_in = 0
+ server1 = self.pg0.remote_hosts[0]
+ server2 = self.pg0.remote_hosts[1]
- @classmethod
- def setUpClass(cls):
- super(TestDeterministicNAT, cls).setUpClass()
+ locals = [{'addr': server1.ip4n,
+ 'port': local_port,
+ 'probability': 50},
+ {'addr': server2.ip4n,
+ 'port': local_port,
+ 'probability': 50}]
- try:
- cls.tcp_port_in = 6303
- cls.tcp_external_port = 6303
- cls.udp_port_in = 6304
- cls.udp_external_port = 6304
- cls.icmp_id_in = 6305
- cls.nat_addr = '10.0.0.3'
+ self.nat44_add_address(self.nat_addr)
+ self.nat44_add_address(twice_nat_addr, twice_nat=1)
- cls.create_pg_interfaces(range(3))
- cls.interfaces = list(cls.pg_interfaces)
+ self.vapi.nat44_add_del_lb_static_mapping(external_addr_n,
+ external_port,
+ IP_PROTOS.tcp,
+ twice_nat=1,
+ local_num=len(locals),
+ locals=locals)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=eh_port_out, dport=external_port))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ server = None
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, twice_nat_addr)
+ self.assertIn(ip.dst, [server1.ip4, server2.ip4])
+ if ip.dst == server1.ip4:
+ server = server1
+ else:
+ server = server2
+ self.assertNotEqual(tcp.sport, eh_port_out)
+ eh_port_in = tcp.sport
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
+ IP(src=server.ip4, dst=twice_nat_addr) /
+ TCP(sport=local_port, dport=eh_port_in))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(ip.dst, self.pg1.remote_ip4)
+ self.assertEqual(tcp.sport, external_port)
+ self.assertEqual(tcp.dport, eh_port_out)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ def test_twice_nat_interface_addr(self):
+ """ Acquire twice NAT44 addresses from interface """
+ self.vapi.nat44_add_interface_addr(self.pg7.sw_if_index, twice_nat=1)
+
+ # no address in NAT pool
+ adresses = self.vapi.nat44_address_dump()
+ self.assertEqual(0, len(adresses))
+
+ # configure interface address and check NAT address pool
+ self.pg7.config_ip4()
+ adresses = self.vapi.nat44_address_dump()
+ self.assertEqual(1, len(adresses))
+ self.assertEqual(adresses[0].ip_address[0:4], self.pg7.local_ip4n)
+ self.assertEqual(adresses[0].twice_nat, 1)
+
+ # remove interface address and check NAT address pool
+ self.pg7.unconfig_ip4()
+ adresses = self.vapi.nat44_address_dump()
+ self.assertEqual(0, len(adresses))
+
+ def test_ipfix_max_frags(self):
+ """ IPFIX logging maximum fragments pending reassembly exceeded """
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat_set_reass(max_frag=0)
+ self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4n,
+ src_address=self.pg3.local_ip4n,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port)
+
+ data = "A" * 4 + "B" * 16 + "C" * 3
+ self.tcp_port_in = random.randint(1025, 65535)
+ pkts = self.create_stream_frag(self.pg0,
+ self.pg1.remote_ip4,
+ self.tcp_port_in,
+ 20,
+ data)
+ self.pg0.add_stream(pkts[-1])
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ frags = self.pg1.get_capture(0)
+ self.vapi.cli("ipfix flush") # FIXME this should be an API call
+ capture = self.pg3.get_capture(9)
+ ipfix = IPFIXDecoder()
+ # first load template
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Template):
+ ipfix.add_template(p.getlayer(Template))
+ # verify events in data set
+ for p in capture:
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ self.verify_ipfix_max_fragments_ip4(data, 0,
+ self.pg0.remote_ip4n)
+
+ def tearDown(self):
+ super(TestNAT44, self).tearDown()
+ if not self.vpp_dead:
+ self.logger.info(self.vapi.cli("show nat44 verbose"))
+ self.logger.info(self.vapi.cli("show nat virtual-reassembly"))
+ self.vapi.cli("nat addr-port-assignment-alg default")
+ self.clear_nat44()
+
+
+class TestNAT44Out2InDPO(MethodHolder):
+ """ NAT44 Test Cases using out2in DPO """
+
+ @classmethod
+ def setUpConstants(cls):
+ super(TestNAT44Out2InDPO, cls).setUpConstants()
+ cls.vpp_cmdline.extend(["nat", "{", "out2in dpo", "}"])
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestNAT44Out2InDPO, cls).setUpClass()
+
+ try:
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.nat_addr = '10.0.0.3'
+ cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
+ cls.dst_ip4 = '192.168.70.1'
+
+ cls.create_pg_interfaces(range(2))
+
+ cls.pg0.admin_up()
+ cls.pg0.config_ip4()
+ cls.pg0.resolve_arp()
+
+ cls.pg1.admin_up()
+ cls.pg1.config_ip6()
+ cls.pg1.resolve_ndp()
+
+ cls.vapi.ip_add_del_route(is_ipv6=True, dst_address='\x00'*16,
+ dst_address_length=0,
+ next_hop_address=cls.pg1.remote_ip6n,
+ next_hop_sw_if_index=cls.pg1.sw_if_index)
+
+ except Exception:
+ super(TestNAT44Out2InDPO, cls).tearDownClass()
+ raise
+
+ def configure_xlat(self):
+ self.dst_ip6_pfx = '1:2:3::'
+ self.dst_ip6_pfx_n = socket.inet_pton(socket.AF_INET6,
+ self.dst_ip6_pfx)
+ self.dst_ip6_pfx_len = 96
+ self.src_ip6_pfx = '4:5:6::'
+ self.src_ip6_pfx_n = socket.inet_pton(socket.AF_INET6,
+ self.src_ip6_pfx)
+ self.src_ip6_pfx_len = 96
+ self.vapi.map_add_domain(self.dst_ip6_pfx_n, self.dst_ip6_pfx_len,
+ self.src_ip6_pfx_n, self.src_ip6_pfx_len,
+ '\x00\x00\x00\x00', 0, is_translation=1,
+ is_rfc6052=1)
+
+ def test_464xlat_ce(self):
+ """ Test 464XLAT CE with NAT44 """
+
+ self.configure_xlat()
+
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_add_del_address_range(self.nat_addr_n, self.nat_addr_n)
+
+ out_src_ip6 = self.compose_ip6(self.dst_ip4, self.dst_ip6_pfx,
+ self.dst_ip6_pfx_len)
+ out_dst_ip6 = self.compose_ip6(self.nat_addr, self.src_ip6_pfx,
+ self.src_ip6_pfx_len)
+
+ try:
+ pkts = self.create_stream_in(self.pg0, self.pg1, self.dst_ip4)
+ 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_ip6(capture, nat_ip=out_dst_ip6,
+ dst_ip=out_src_ip6)
+
+ pkts = self.create_stream_out_ip6(self.pg1, out_src_ip6,
+ out_dst_ip6)
+ 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)
+ finally:
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index,
+ is_add=0)
+ self.vapi.nat44_add_del_address_range(self.nat_addr_n,
+ self.nat_addr_n, is_add=0)
+
+ def test_464xlat_ce_no_nat(self):
+ """ Test 464XLAT CE without NAT44 """
+
+ self.configure_xlat()
+
+ out_src_ip6 = self.compose_ip6(self.dst_ip4, self.dst_ip6_pfx,
+ self.dst_ip6_pfx_len)
+ out_dst_ip6 = self.compose_ip6(self.pg0.remote_ip4, self.src_ip6_pfx,
+ self.src_ip6_pfx_len)
+
+ pkts = self.create_stream_in(self.pg0, self.pg1, self.dst_ip4)
+ 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_ip6(capture, dst_ip=out_src_ip6,
+ nat_ip=out_dst_ip6, same_port=True)
+
+ pkts = self.create_stream_out_ip6(self.pg1, out_src_ip6, out_dst_ip6)
+ 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)
+
+
+class TestDeterministicNAT(MethodHolder):
+ """ Deterministic NAT Test Cases """
+
+ @classmethod
+ def setUpConstants(cls):
+ super(TestDeterministicNAT, cls).setUpConstants()
+ cls.vpp_cmdline.extend(["nat", "{", "deterministic", "}"])
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestDeterministicNAT, cls).setUpClass()
+
+ try:
+ cls.tcp_port_in = 6303
+ cls.tcp_external_port = 6303
+ cls.udp_port_in = 6304
+ cls.udp_external_port = 6304
+ cls.icmp_id_in = 6305
+ cls.nat_addr = '10.0.0.3'
+
+ cls.create_pg_interfaces(range(3))
+ cls.interfaces = list(cls.pg_interfaces)
for i in cls.interfaces:
i.admin_up()
self.assertEqual(ord(record[230]), 13)
# natQuotaExceededEvent
self.assertEqual('\x03\x00\x00\x00', record[466])
+ # maxEntriesPerUser
+ self.assertEqual('\xe8\x03\x00\x00', record[473])
# sourceIPv4Address
self.assertEqual(self.pg0.remote_ip4n, record[8])
class TestNAT64(MethodHolder):
""" NAT64 Test Cases """
+ @classmethod
+ def setUpConstants(cls):
+ super(TestNAT64, cls).setUpConstants()
+ cls.vpp_cmdline.extend(["nat", "{", "nat64 bib hash buckets 128",
+ "nat64 st hash buckets 256", "}"])
+
@classmethod
def setUpClass(cls):
super(TestNAT64, cls).setUpClass()
cls.vrf1_nat_addr = '10.0.10.3'
cls.vrf1_nat_addr_n = socket.inet_pton(socket.AF_INET,
cls.vrf1_nat_addr)
+ cls.ipfix_src_port = 4739
+ cls.ipfix_domain_id = 1
cls.create_pg_interfaces(range(5))
cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
addresses = self.vapi.nat64_pool_addr_dump()
self.assertEqual(0, len(adresses))
+ @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(self.nat_addr_n,
+ self.nat_addr_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+
+ 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_ip4n,
+ src_address=self.pg3.local_ip4n,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port)
+
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ 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.get_capture(0)
+ self.vapi.cli("ipfix flush") # FIXME this should be an API call
+ capture = self.pg3.get_capture(9)
+ ipfix = IPFIXDecoder()
+ # first load template
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Template):
+ ipfix.add_template(p.getlayer(Template))
+ # verify events in data set
+ for p in capture:
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ self.verify_ipfix_max_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.get_capture(0)
+ self.vapi.cli("ipfix flush") # FIXME this should be an API call
+ 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_max_frags(self):
+ """ IPFIX logging maximum fragments pending reassembly exceeded """
+ self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n,
+ self.nat_addr_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+ self.vapi.nat_set_reass(max_frag=0, is_ip6=1)
+ self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4n,
+ src_address=self.pg3.local_ip4n,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port)
+
+ data = '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[-1])
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(0)
+ self.vapi.cli("ipfix flush") # FIXME this should be an API call
+ capture = self.pg3.get_capture(9)
+ ipfix = IPFIXDecoder()
+ # first load template
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Template):
+ ipfix.add_template(p.getlayer(Template))
+ # verify events in data set
+ for p in capture:
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ self.verify_ipfix_max_fragments_ip6(data, 0,
+ self.pg0.remote_ip6n)
+
+ def test_ipfix_bib_ses(self):
+ """ IPFIX logging NAT64 BIB/session create and delete events """
+ self.tcp_port_in = random.randint(1025, 65535)
+ remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
+ '64:ff9b::',
+ 96)
+
+ self.vapi.nat64_add_del_pool_addr_range(self.nat_addr_n,
+ self.nat_addr_n)
+ self.vapi.nat64_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(self.pg1.sw_if_index, is_inside=0)
+ self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4n,
+ src_address=self.pg3.local_ip4n,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port)
+
+ # 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.cli("ipfix flush") # FIXME this should be an API call
+ capture = self.pg3.get_capture(10)
+ 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 ord(data[0][230]) == 10:
+ self.verify_ipfix_bib(data, 1, self.pg0.remote_ip6n)
+ elif ord(data[0][230]) == 6:
+ self.verify_ipfix_nat64_ses(data,
+ 1,
+ self.pg0.remote_ip6n,
+ 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(self.nat_addr_n,
+ self.nat_addr_n,
+ is_add=0)
+ self.vapi.cli("ipfix flush") # FIXME this should be an API call
+ 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 ord(data[0][230]) == 11:
+ self.verify_ipfix_bib(data, 0, self.pg0.remote_ip6n)
+ elif ord(data[0][230]) == 7:
+ self.verify_ipfix_nat64_ses(data,
+ 0,
+ self.pg0.remote_ip6n,
+ self.pg1.remote_ip4,
+ 25)
+ else:
+ self.logger.error(ppp("Unexpected or invalid packet: ", p))
+
def nat64_get_ses_num(self):
"""
Return number of active NAT64 sessions.
"""
Clear NAT64 configuration.
"""
+ self.vapi.nat_ipfix(enable=0, src_port=self.ipfix_src_port,
+ domain_id=self.ipfix_domain_id)
+ self.ipfix_src_port = 4739
+ self.ipfix_domain_id = 1
+
self.vapi.nat64_set_timeouts()
interfaces = self.vapi.nat64_interface_dump()
intf.is_inside,
is_add=0)
- bib = self.vapi.nat64_bib_dump(IP_PROTOS.tcp)
- for bibe in bib:
- if bibe.is_static:
- self.vapi.nat64_add_del_static_bib(bibe.i_addr,
- bibe.o_addr,
- bibe.i_port,
- bibe.o_port,
- bibe.proto,
- bibe.vrf_id,
- is_add=0)
-
- bib = self.vapi.nat64_bib_dump(IP_PROTOS.udp)
- for bibe in bib:
- if bibe.is_static:
- self.vapi.nat64_add_del_static_bib(bibe.i_addr,
- bibe.o_addr,
- bibe.i_port,
- bibe.o_port,
- bibe.proto,
- bibe.vrf_id,
- is_add=0)
-
- bib = self.vapi.nat64_bib_dump(IP_PROTOS.icmp)
+ bib = self.vapi.nat64_bib_dump(255)
for bibe in bib:
if bibe.is_static:
self.vapi.nat64_add_del_static_bib(bibe.i_addr,
self.check_ip_checksum(capture)
self.check_icmp_checksum(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)
+ self.assertEqual(1, len(capture))
+ 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))
+
def tearDown(self):
super(TestDSlite, self).tearDown()
if not self.vpp_dead:
self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
self.logger.info(self.vapi.cli("show dslite sessions"))
+
+class TestDSliteCE(MethodHolder):
+ """ DS-Lite CE Test Cases """
+
+ @classmethod
+ def setUpConstants(cls):
+ super(TestDSliteCE, cls).setUpConstants()
+ cls.vpp_cmdline.extend(["nat", "{", "dslite ce", "}"])
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestDSliteCE, cls).setUpClass()
+
+ try:
+ cls.create_pg_interfaces(range(2))
+ cls.pg0.admin_up()
+ cls.pg0.config_ip4()
+ cls.pg0.resolve_arp()
+ cls.pg1.admin_up()
+ cls.pg1.config_ip6()
+ cls.pg1.generate_remote_hosts(1)
+ cls.pg1.configure_ipv6_neighbors()
+
+ except Exception:
+ super(TestDSliteCE, cls).tearDownClass()
+ raise
+
+ def test_dslite_ce(self):
+ """ Test DS-Lite CE """
+
+ b4_ip4 = '192.0.0.2'
+ b4_ip4_n = socket.inet_pton(socket.AF_INET, b4_ip4)
+ b4_ip6 = '2001:db8:62aa::375e:f4c1:1'
+ b4_ip6_n = socket.inet_pton(socket.AF_INET6, b4_ip6)
+ self.vapi.dslite_set_b4_addr(b4_ip6_n, b4_ip4_n)
+
+ aftr_ip4 = '192.0.0.1'
+ aftr_ip4_n = socket.inet_pton(socket.AF_INET, aftr_ip4)
+ 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(aftr_ip6_n, aftr_ip4_n)
+
+ self.vapi.ip_add_del_route(dst_address=aftr_ip6_n,
+ dst_address_length=128,
+ next_hop_address=self.pg1.remote_ip6n,
+ next_hop_sw_if_index=self.pg1.sw_if_index,
+ is_ipv6=1)
+
+ # 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.check_ip_checksum(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.check_ip_checksum(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)
+ self.assertEqual(1, len(capture))
+ 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()
+ if not self.vpp_dead:
+ self.logger.info(
+ self.vapi.cli("show dslite aftr-tunnel-endpoint-address"))
+ self.logger.info(
+ self.vapi.cli("show dslite b4-tunnel-endpoint-address"))
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff