197 lines
7.3 KiB
Python
197 lines
7.3 KiB
Python
|
#!/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 VppTestCase, VppTestRunner, running_extended_tests
|
||
|
|
from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
|
||
|
|
from scapy.all import bind_layers, Packet, ByteEnumField, ShortField, \
|
||
|
|
IPField, IntField, LongField, XByteField, FlagsField, FieldLenField, \
|
||
|
|
PacketListField
|
||
|
|
from scapy.data import IP_PROTOS
|
||
|
|
from scapy.layers.inet import IP, TCP, UDP, ICMP
|
||
|
|
from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
|
||
|
|
from scapy.layers.inet6 import ICMPv6DestUnreach, IPerror6, IPv6ExtHdrFragment
|
||
|
|
from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply, \
|
||
|
|
ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, fragment6
|
||
|
|
from scapy.layers.l2 import Ether, ARP, GRE
|
||
|
|
from scapy.packet import Raw
|
||
|
|
from syslog_rfc5424_parser import SyslogMessage, ParseError
|
||
|
|
from syslog_rfc5424_parser.constants import SyslogSeverity
|
||
|
|
from util import ip4_range
|
||
|
|
from util import ppc, ppp
|
||
|
|
from vpp_acl import AclRule, VppAcl, VppAclInterface
|
||
|
|
from vpp_ip_route import VppIpRoute, VppRoutePath
|
||
|
|
from vpp_neighbor import VppNeighbor
|
||
|
|
from vpp_papi import VppEnum
|
||
|
|
|
||
|
|
|
||
|
|
class MethodHolder(VppTestCase):
|
||
|
|
""" NAT create capture and verify method holder """
|
||
|
|
@property
|
||
|
|
def config_flags(self):
|
||
|
|
return VppEnum.vl_api_nat_config_flags_t
|
||
|
|
|
||
|
|
|
||
|
|
class TestNAT66(MethodHolder):
|
||
|
|
""" NAT66 Test Cases """
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def setUpClass(cls):
|
||
|
|
super(TestNAT66, cls).setUpClass()
|
||
|
|
|
||
|
|
cls.nat_addr = 'fd01:ff::2'
|
||
|
|
|
||
|
|
cls.create_pg_interfaces(range(2))
|
||
|
|
cls.interfaces = list(cls.pg_interfaces)
|
||
|
|
|
||
|
|
for i in cls.interfaces:
|
||
|
|
i.admin_up()
|
||
|
|
i.config_ip6()
|
||
|
|
i.configure_ipv6_neighbors()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def tearDownClass(cls):
|
||
|
|
super(TestNAT66, cls).tearDownClass()
|
||
|
|
|
||
|
|
def test_static(self):
|
||
|
|
""" 1:1 NAT66 test """
|
||
|
|
flags = self.config_flags.NAT_IS_INSIDE
|
||
|
|
self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
|
||
|
|
sw_if_index=self.pg0.sw_if_index)
|
||
|
|
self.vapi.nat66_add_del_interface(is_add=1,
|
||
|
|
sw_if_index=self.pg1.sw_if_index)
|
||
|
|
self.vapi.nat66_add_del_static_mapping(
|
||
|
|
local_ip_address=self.pg0.remote_ip6,
|
||
|
|
external_ip_address=self.nat_addr,
|
||
|
|
is_add=1)
|
||
|
|
|
||
|
|
# in2out
|
||
|
|
pkts = []
|
||
|
|
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
|
||
|
|
IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
|
||
|
|
TCP())
|
||
|
|
pkts.append(p)
|
||
|
|
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
|
||
|
|
IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
|
||
|
|
UDP())
|
||
|
|
pkts.append(p)
|
||
|
|
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
|
||
|
|
IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
|
||
|
|
ICMPv6EchoRequest())
|
||
|
|
pkts.append(p)
|
||
|
|
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
|
||
|
|
IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
|
||
|
|
GRE() / IP() / TCP())
|
||
|
|
pkts.append(p)
|
||
|
|
self.pg0.add_stream(pkts)
|
||
|
|
self.pg_enable_capture(self.pg_interfaces)
|
||
|
|
self.pg_start()
|
||
|
|
capture = self.pg1.get_capture(len(pkts))
|
||
|
|
|
||
|
|
for packet in capture:
|
||
|
|
try:
|
||
|
|
self.assertEqual(packet[IPv6].src, self.nat_addr)
|
||
|
|
self.assertEqual(packet[IPv6].dst, self.pg1.remote_ip6)
|
||
|
|
self.assert_packet_checksums_valid(packet)
|
||
|
|
except:
|
||
|
|
self.logger.error(ppp("Unexpected or invalid packet:", packet))
|
||
|
|
raise
|
||
|
|
|
||
|
|
# out2in
|
||
|
|
pkts = []
|
||
|
|
p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
|
||
|
|
IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
|
||
|
|
TCP())
|
||
|
|
pkts.append(p)
|
||
|
|
p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
|
||
|
|
IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
|
||
|
|
UDP())
|
||
|
|
pkts.append(p)
|
||
|
|
p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
|
||
|
|
IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
|
||
|
|
ICMPv6EchoReply())
|
||
|
|
pkts.append(p)
|
||
|
|
p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
|
||
|
|
IPv6(src=self.pg1.remote_ip6, dst=self.nat_addr) /
|
||
|
|
GRE() / IP() / TCP())
|
||
|
|
pkts.append(p)
|
||
|
|
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, self.pg1.remote_ip6)
|
||
|
|
self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
|
||
|
|
self.assert_packet_checksums_valid(packet)
|
||
|
|
except:
|
||
|
|
self.logger.error(ppp("Unexpected or invalid packet:", packet))
|
||
|
|
raise
|
||
|
|
|
||
|
|
sm = self.vapi.nat66_static_mapping_dump()
|
||
|
|
self.assertEqual(len(sm), 1)
|
||
|
|
self.assertEqual(sm[0].total_pkts, 8)
|
||
|
|
|
||
|
|
def test_check_no_translate(self):
|
||
|
|
""" NAT66 translate only when egress interface is outside interface """
|
||
|
|
flags = self.config_flags.NAT_IS_INSIDE
|
||
|
|
self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
|
||
|
|
sw_if_index=self.pg0.sw_if_index)
|
||
|
|
self.vapi.nat66_add_del_interface(is_add=1, flags=flags,
|
||
|
|
sw_if_index=self.pg1.sw_if_index)
|
||
|
|
self.vapi.nat66_add_del_static_mapping(
|
||
|
|
local_ip_address=self.pg0.remote_ip6,
|
||
|
|
external_ip_address=self.nat_addr,
|
||
|
|
is_add=1)
|
||
|
|
|
||
|
|
# in2out
|
||
|
|
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
|
||
|
|
IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
|
||
|
|
UDP())
|
||
|
|
self.pg0.add_stream([p])
|
||
|
|
self.pg_enable_capture(self.pg_interfaces)
|
||
|
|
self.pg_start()
|
||
|
|
capture = self.pg1.get_capture(1)
|
||
|
|
packet = capture[0]
|
||
|
|
try:
|
||
|
|
self.assertEqual(packet[IPv6].src, self.pg0.remote_ip6)
|
||
|
|
self.assertEqual(packet[IPv6].dst, self.pg1.remote_ip6)
|
||
|
|
except:
|
||
|
|
self.logger.error(ppp("Unexpected or invalid packet:", packet))
|
||
|
|
raise
|
||
|
|
|
||
|
|
def clear_nat66(self):
|
||
|
|
"""
|
||
|
|
Clear NAT66 configuration.
|
||
|
|
"""
|
||
|
|
interfaces = self.vapi.nat66_interface_dump()
|
||
|
|
for intf in interfaces:
|
||
|
|
self.vapi.nat66_add_del_interface(is_add=0, flags=intf.flags,
|
||
|
|
sw_if_index=intf.sw_if_index)
|
||
|
|
|
||
|
|
static_mappings = self.vapi.nat66_static_mapping_dump()
|
||
|
|
for sm in static_mappings:
|
||
|
|
self.vapi.nat66_add_del_static_mapping(
|
||
|
|
local_ip_address=sm.local_ip_address,
|
||
|
|
external_ip_address=sm.external_ip_address, vrf_id=sm.vrf_id,
|
||
|
|
is_add=0)
|
||
|
|
|
||
|
|
def tearDown(self):
|
||
|
|
super(TestNAT66, self).tearDown()
|
||
|
|
self.clear_nat66()
|
||
|
|
|
||
|
|
def show_commands_at_teardown(self):
|
||
|
|
self.logger.info(self.vapi.cli("show nat66 interfaces"))
|
||
|
|
self.logger.info(self.vapi.cli("show nat66 static mappings"))
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
unittest.main(testRunner=VppTestRunner)
|