aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/cnat
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins/cnat')
-rw-r--r--src/plugins/cnat/test/test_cnat.py975
1 files changed, 0 insertions, 975 deletions
diff --git a/src/plugins/cnat/test/test_cnat.py b/src/plugins/cnat/test/test_cnat.py
deleted file mode 100644
index ff4c44033cb..00000000000
--- a/src/plugins/cnat/test/test_cnat.py
+++ /dev/null
@@ -1,975 +0,0 @@
-#!/usr/bin/env python3
-
-import unittest
-
-from framework import VppTestCase, VppTestRunner
-from vpp_ip import DpoProto, INVALID_INDEX
-from itertools import product
-
-from scapy.packet import Raw
-from scapy.layers.l2 import Ether
-from scapy.layers.inet import IP, UDP, TCP, ICMP
-from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
-from scapy.layers.inet6 import IPv6, IPerror6, ICMPv6DestUnreach
-from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply
-
-import struct
-
-from ipaddress import ip_address, ip_network, \
- IPv4Address, IPv6Address, IPv4Network, IPv6Network
-
-from vpp_object import VppObject
-from vpp_papi import VppEnum
-
-N_PKTS = 15
-
-
-class Ep(object):
- """ CNat endpoint """
-
- def __init__(self, ip=None, port=0, l4p=TCP,
- sw_if_index=INVALID_INDEX, is_v6=False):
- self.ip = ip
- if ip is None:
- self.ip = "::" if is_v6 else "0.0.0.0"
- self.port = port
- self.l4p = l4p
- self.sw_if_index = sw_if_index
- if is_v6:
- self.if_af = VppEnum.vl_api_address_family_t.ADDRESS_IP6
- else:
- self.if_af = VppEnum.vl_api_address_family_t.ADDRESS_IP4
-
- def encode(self):
- return {'addr': self.ip,
- 'port': self.port,
- 'sw_if_index': self.sw_if_index,
- 'if_af': self.if_af}
-
- @classmethod
- def from_pg(cls, pg, is_v6=False):
- if pg is None:
- return cls(is_v6=is_v6)
- else:
- return cls(sw_if_index=pg.sw_if_index, is_v6=is_v6)
-
- @property
- def isV6(self):
- return ":" in self.ip
-
- def __str__(self):
- return ("%s:%d" % (self.ip, self.port))
-
-
-class EpTuple(object):
- """ CNat endpoint """
-
- def __init__(self, src, dst):
- self.src = src
- self.dst = dst
-
- def encode(self):
- return {'src_ep': self.src.encode(),
- 'dst_ep': self.dst.encode()}
-
- def __str__(self):
- return ("%s->%s" % (self.src, self.dst))
-
-
-class VppCNatTranslation(VppObject):
-
- def __init__(self, test, iproto, vip, paths):
- self._test = test
- self.vip = vip
- self.iproto = iproto
- self.paths = paths
- self.encoded_paths = []
- for path in self.paths:
- self.encoded_paths.append(path.encode())
-
- def __str__(self):
- return ("%s %s %s" % (self.vip, self.iproto, self.paths))
-
- @property
- def vl4_proto(self):
- ip_proto = VppEnum.vl_api_ip_proto_t
- return {
- UDP: ip_proto.IP_API_PROTO_UDP,
- TCP: ip_proto.IP_API_PROTO_TCP,
- }[self.iproto]
-
- def add_vpp_config(self):
- r = self._test.vapi.cnat_translation_update(
- {'vip': self.vip.encode(),
- 'ip_proto': self.vl4_proto,
- 'n_paths': len(self.paths),
- 'paths': self.encoded_paths})
- self._test.registry.register(self, self._test.logger)
- self.id = r.id
-
- def modify_vpp_config(self, paths):
- self.paths = paths
- self.encoded_paths = []
- for path in self.paths:
- self.encoded_paths.append(path.encode())
-
- r = self._test.vapi.cnat_translation_update(
- {'vip': self.vip.encode(),
- 'ip_proto': self.vl4_proto,
- 'n_paths': len(self.paths),
- 'paths': self.encoded_paths})
- self._test.registry.register(self, self._test.logger)
-
- def remove_vpp_config(self):
- self._test.vapi.cnat_translation_del(id=self.id)
-
- def query_vpp_config(self):
- for t in self._test.vapi.cnat_translation_dump():
- if self.id == t.translation.id:
- return t.translation
- return None
-
- def object_id(self):
- return ("cnat-translation-%s" % (self.vip))
-
- def get_stats(self):
- c = self._test.statistics.get_counter("/net/cnat-translation")
- return c[0][self.id]
-
-
-class TestCNatTranslation(VppTestCase):
- """ CNat Translation """
- extra_vpp_punt_config = ["cnat", "{",
- "session-db-buckets", "64",
- "session-cleanup-timeout", "0.1",
- "session-max-age", "1",
- "tcp-max-age", "1",
- "scanner", "off", "}"]
-
- @classmethod
- def setUpClass(cls):
- super(TestCNatTranslation, cls).setUpClass()
-
- @classmethod
- def tearDownClass(cls):
- super(TestCNatTranslation, cls).tearDownClass()
-
- def setUp(self):
- super(TestCNatTranslation, self).setUp()
-
- self.create_pg_interfaces(range(3))
-
- for i in self.pg_interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
- i.config_ip6()
- i.resolve_ndp()
-
- def tearDown(self):
- for i in self.pg_interfaces:
- i.unconfig_ip4()
- i.unconfig_ip6()
- i.admin_down()
- super(TestCNatTranslation, self).tearDown()
-
- def cnat_create_translation(self, vip, nbr):
- ip_v = "ip6" if vip.isV6 else "ip4"
- dep = Ep(getattr(self.pg1.remote_hosts[nbr], ip_v), 4000 + nbr)
- sep = Ep("::", 0) if vip.isV6 else Ep("0.0.0.0", 0)
- t1 = VppCNatTranslation(
- self, vip.l4p, vip,
- [EpTuple(sep, dep), EpTuple(sep, dep)])
- t1.add_vpp_config()
- return t1
-
- def cnat_test_translation(self, t1, nbr, sports, isV6=False):
- ip_v = "ip6" if isV6 else "ip4"
- ip_class = IPv6 if isV6 else IP
- vip = t1.vip
-
- #
- # Flows
- #
- for src in self.pg0.remote_hosts:
- for sport in sports:
- # from client to vip
- p1 = (Ether(dst=self.pg0.local_mac,
- src=src.mac) /
- ip_class(src=getattr(src, ip_v), dst=vip.ip) /
- vip.l4p(sport=sport, dport=vip.port) /
- Raw())
-
- self.vapi.cli("trace add pg-input 1")
- rxs = self.send_and_expect(self.pg0,
- p1 * N_PKTS,
- self.pg1)
- self.logger.info(self.vapi.cli("show trace max 1"))
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(
- rx[ip_class].dst,
- getattr(self.pg1.remote_hosts[nbr], ip_v))
- self.assertEqual(rx[vip.l4p].dport, 4000 + nbr)
- self.assertEqual(
- rx[ip_class].src,
- getattr(src, ip_v))
- self.assertEqual(rx[vip.l4p].sport, sport)
-
- # from vip to client
- p1 = (Ether(dst=self.pg1.local_mac,
- src=self.pg1.remote_mac) /
- ip_class(src=getattr(
- self.pg1.remote_hosts[nbr],
- ip_v),
- dst=getattr(src, ip_v)) /
- vip.l4p(sport=4000 + nbr, dport=sport) /
- Raw())
-
- rxs = self.send_and_expect(self.pg1,
- p1 * N_PKTS,
- self.pg0)
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(
- rx[ip_class].dst,
- getattr(src, ip_v))
- self.assertEqual(rx[vip.l4p].dport, sport)
- self.assertEqual(rx[ip_class].src, vip.ip)
- self.assertEqual(rx[vip.l4p].sport, vip.port)
-
- #
- # packets to the VIP that do not match a
- # translation are dropped
- #
- p1 = (Ether(dst=self.pg0.local_mac,
- src=src.mac) /
- ip_class(src=getattr(src, ip_v), dst=vip.ip) /
- vip.l4p(sport=sport, dport=6666) /
- Raw())
-
- self.send_and_assert_no_replies(self.pg0,
- p1 * N_PKTS,
- self.pg1)
-
- #
- # packets from the VIP that do not match a
- # session are forwarded
- #
- p1 = (Ether(dst=self.pg1.local_mac,
- src=self.pg1.remote_mac) /
- ip_class(src=getattr(
- self.pg1.remote_hosts[nbr],
- ip_v),
- dst=getattr(src, ip_v)) /
- vip.l4p(sport=6666, dport=sport) /
- Raw())
-
- rxs = self.send_and_expect(self.pg1,
- p1 * N_PKTS,
- self.pg0)
-
- def cnat_test_translation_update(self, t1, sports, isV6=False):
- ip_v = "ip6" if isV6 else "ip4"
- ip_class = IPv6 if isV6 else IP
- vip = t1.vip
-
- #
- # modify the translation to use a different backend
- #
- dep = Ep(getattr(self.pg2, 'remote_' + ip_v), 5000)
- sep = Ep("::", 0) if isV6 else Ep("0.0.0.0", 0)
- t1.modify_vpp_config([EpTuple(sep, dep)])
-
- #
- # existing flows follow the old path
- #
- for src in self.pg0.remote_hosts:
- for sport in sports:
- # from client to vip
- p1 = (Ether(dst=self.pg0.local_mac,
- src=src.mac) /
- ip_class(src=getattr(src, ip_v), dst=vip.ip) /
- vip.l4p(sport=sport, dport=vip.port) /
- Raw())
-
- rxs = self.send_and_expect(self.pg0,
- p1 * N_PKTS,
- self.pg1)
-
- #
- # new flows go to the new backend
- #
- for src in self.pg0.remote_hosts:
- p1 = (Ether(dst=self.pg0.local_mac,
- src=src.mac) /
- ip_class(src=getattr(src, ip_v), dst=vip.ip) /
- vip.l4p(sport=9999, dport=vip.port) /
- Raw())
-
- rxs = self.send_and_expect(self.pg0,
- p1 * N_PKTS,
- self.pg2)
-
- def cnat_translation(self, vips, isV6=False):
- """ CNat Translation """
-
- ip_class = IPv6 if isV6 else IP
- ip_v = "ip6" if isV6 else "ip4"
- sports = [1234, 1233]
-
- #
- # turn the scanner off whilst testing otherwise sessions
- # will time out
- #
- self.vapi.cli("test cnat scanner off")
-
- sessions = self.vapi.cnat_session_dump()
-
- trs = []
- for nbr, vip in enumerate(vips):
- trs.append(self.cnat_create_translation(vip, nbr))
-
- self.logger.info(self.vapi.cli("sh cnat client"))
- self.logger.info(self.vapi.cli("sh cnat translation"))
-
- #
- # translations
- #
- for nbr, vip in enumerate(vips):
- self.cnat_test_translation(trs[nbr], nbr, sports, isV6=isV6)
- self.cnat_test_translation_update(trs[nbr], sports, isV6=isV6)
- if isV6:
- self.logger.info(self.vapi.cli(
- "sh ip6 fib %s" % self.pg0.remote_ip6))
- else:
- self.logger.info(self.vapi.cli(
- "sh ip fib %s" % self.pg0.remote_ip4))
- self.logger.info(self.vapi.cli("sh cnat session verbose"))
-
- #
- # turn the scanner back on and wait until the sessions
- # all disapper
- #
- self.vapi.cli("test cnat scanner on")
-
- n_tries = 0
- sessions = self.vapi.cnat_session_dump()
- while (len(sessions) and n_tries < 100):
- n_tries += 1
- sessions = self.vapi.cnat_session_dump()
- self.sleep(2)
- self.logger.info(self.vapi.cli("show cnat session verbose"))
-
- self.assertTrue(n_tries < 100)
- self.vapi.cli("test cnat scanner off")
-
- #
- # load some flows again and purge
- #
- for vip in vips:
- for src in self.pg0.remote_hosts:
- for sport in sports:
- # from client to vip
- p1 = (Ether(dst=self.pg0.local_mac,
- src=src.mac) /
- ip_class(src=getattr(src, ip_v), dst=vip.ip) /
- vip.l4p(sport=sport, dport=vip.port) /
- Raw())
- self.send_and_expect(self.pg0,
- p1 * N_PKTS,
- self.pg2)
-
- for tr in trs:
- tr.remove_vpp_config()
-
- self.assertTrue(self.vapi.cnat_session_dump())
- self.vapi.cnat_session_purge()
- self.assertFalse(self.vapi.cnat_session_dump())
-
- def test_icmp(self):
- vips = [
- Ep("30.0.0.1", 5555),
- Ep("30.0.0.2", 5554),
- Ep("30.0.0.2", 5553, UDP),
- Ep("30::1", 6666),
- Ep("30::2", 5553, UDP),
- ]
- sport = 1234
-
- self.pg0.generate_remote_hosts(len(vips))
- self.pg0.configure_ipv6_neighbors()
- self.pg0.configure_ipv4_neighbors()
-
- self.pg1.generate_remote_hosts(len(vips))
- self.pg1.configure_ipv6_neighbors()
- self.pg1.configure_ipv4_neighbors()
-
- self.vapi.cli("test cnat scanner off")
- trs = []
- for nbr, vip in enumerate(vips):
- trs.append(self.cnat_create_translation(vip, nbr))
-
- self.logger.info(self.vapi.cli("sh cnat client"))
- self.logger.info(self.vapi.cli("sh cnat translation"))
-
- for nbr, vip in enumerate(vips):
- if vip.isV6:
- client_addr = self.pg0.remote_hosts[0].ip6
- remote_addr = self.pg1.remote_hosts[nbr].ip6
- remote2_addr = self.pg2.remote_hosts[0].ip6
- else:
- client_addr = self.pg0.remote_hosts[0].ip4
- remote_addr = self.pg1.remote_hosts[nbr].ip4
- remote2_addr = self.pg2.remote_hosts[0].ip4
- IP46 = IPv6 if vip.isV6 else IP
- # from client to vip
- p1 = (Ether(dst=self.pg0.local_mac,
- src=self.pg0.remote_hosts[0].mac) /
- IP46(src=client_addr, dst=vip.ip) /
- vip.l4p(sport=sport, dport=vip.port) /
- Raw())
-
- rxs = self.send_and_expect(self.pg0,
- p1 * N_PKTS,
- self.pg1)
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].dst, remote_addr)
- self.assertEqual(rx[vip.l4p].dport, 4000 + nbr)
- self.assertEqual(rx[IP46].src, client_addr)
- self.assertEqual(rx[vip.l4p].sport, sport)
-
- InnerIP = rxs[0][IP46]
-
- ICMP46 = ICMPv6DestUnreach if vip.isV6 else ICMP
- ICMPelem = ICMPv6DestUnreach(code=1) if vip.isV6 else ICMP(type=11)
- # from vip to client, ICMP error
- p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP46(src=remote_addr, dst=client_addr) /
- ICMPelem / InnerIP)
-
- rxs = self.send_and_expect(self.pg1,
- p1 * N_PKTS,
- self.pg0)
-
- TCPUDPError = TCPerror if vip.l4p == TCP else UDPerror
- IP46error = IPerror6 if vip.isV6 else IPerror
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].src, vip.ip)
- self.assertEqual(rx[ICMP46][IP46error].src, client_addr)
- self.assertEqual(rx[ICMP46][IP46error].dst, vip.ip)
- self.assertEqual(rx[ICMP46][IP46error]
- [TCPUDPError].sport, sport)
- self.assertEqual(rx[ICMP46][IP46error]
- [TCPUDPError].dport, vip.port)
-
- # from other remote to client, ICMP error
- # outside shouldn't be NAT-ed
- p1 = (Ether(dst=self.pg2.local_mac, src=self.pg2.remote_mac) /
- IP46(src=remote2_addr, dst=client_addr) /
- ICMPelem / InnerIP)
-
- rxs = self.send_and_expect(self.pg1,
- p1 * N_PKTS,
- self.pg0)
-
- TCPUDPError = TCPerror if vip.l4p == TCP else UDPerror
- IP46error = IPerror6 if vip.isV6 else IPerror
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].src, remote2_addr)
- self.assertEqual(rx[ICMP46][IP46error].src, client_addr)
- self.assertEqual(rx[ICMP46][IP46error].dst, vip.ip)
- self.assertEqual(rx[ICMP46][IP46error]
- [TCPUDPError].sport, sport)
- self.assertEqual(rx[ICMP46][IP46error]
- [TCPUDPError].dport, vip.port)
-
- self.vapi.cnat_session_purge()
-
- def test_cnat6(self):
- # """ CNat Translation ipv6 """
- vips = [
- Ep("30::1", 5555),
- Ep("30::2", 5554),
- Ep("30::2", 5553, UDP),
- ]
-
- self.pg0.generate_remote_hosts(len(vips))
- self.pg0.configure_ipv6_neighbors()
- self.pg1.generate_remote_hosts(len(vips))
- self.pg1.configure_ipv6_neighbors()
-
- self.cnat_translation(vips, isV6=True)
-
- def test_cnat4(self):
- # """ CNat Translation ipv4 """
-
- vips = [
- Ep("30.0.0.1", 5555),
- Ep("30.0.0.2", 5554),
- Ep("30.0.0.2", 5553, UDP),
- ]
-
- self.pg0.generate_remote_hosts(len(vips))
- self.pg0.configure_ipv4_neighbors()
- self.pg1.generate_remote_hosts(len(vips))
- self.pg1.configure_ipv4_neighbors()
-
- self.cnat_translation(vips)
-
-
-class TestCNatSourceNAT(VppTestCase):
- """ CNat Source NAT """
- extra_vpp_punt_config = ["cnat", "{",
- "session-cleanup-timeout", "0.1",
- "session-max-age", "1",
- "tcp-max-age", "1",
- "scanner", "off", "}"]
-
- @classmethod
- def setUpClass(cls):
- super(TestCNatSourceNAT, cls).setUpClass()
-
- @classmethod
- def tearDownClass(cls):
- super(TestCNatSourceNAT, cls).tearDownClass()
-
- def setUp(self):
- super(TestCNatSourceNAT, self).setUp()
-
- self.create_pg_interfaces(range(3))
-
- for i in self.pg_interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
- i.config_ip6()
- i.resolve_ndp()
-
- self.pg0.configure_ipv6_neighbors()
- self.pg0.configure_ipv4_neighbors()
- self.pg1.generate_remote_hosts(2)
- self.pg1.configure_ipv4_neighbors()
- self.pg1.configure_ipv6_neighbors()
-
- self.vapi.cnat_set_snat_addresses(
- snat_ip4=self.pg2.remote_hosts[0].ip4,
- snat_ip6=self.pg2.remote_hosts[0].ip6,
- sw_if_index=INVALID_INDEX)
- self.vapi.feature_enable_disable(
- enable=1,
- arc_name="ip6-unicast",
- feature_name="cnat-snat-ip6",
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.feature_enable_disable(
- enable=1,
- arc_name="ip4-unicast",
- feature_name="cnat-snat-ip4",
- sw_if_index=self.pg0.sw_if_index)
-
- policie_tbls = VppEnum.vl_api_cnat_snat_policy_table_t
- self.vapi.cnat_set_snat_policy(
- policy=VppEnum.vl_api_cnat_snat_policies_t.CNAT_POLICY_IF_PFX)
- for i in self.pg_interfaces:
- self.vapi.cnat_snat_policy_add_del_if(
- sw_if_index=i.sw_if_index, is_add=1,
- table=policie_tbls.CNAT_POLICY_INCLUDE_V6)
- self.vapi.cnat_snat_policy_add_del_if(
- sw_if_index=i.sw_if_index, is_add=1,
- table=policie_tbls.CNAT_POLICY_INCLUDE_V4)
-
- def tearDown(self):
- self.vapi.cnat_session_purge()
- for i in self.pg_interfaces:
- i.unconfig_ip4()
- i.unconfig_ip6()
- i.admin_down()
- super(TestCNatSourceNAT, self).tearDown()
-
- def test_snat_v6(self):
- # """ CNat Source Nat v6 """
- self.sourcenat_test_tcp_udp_conf(TCP, isV6=True)
- self.sourcenat_test_tcp_udp_conf(UDP, isV6=True)
- self.sourcenat_test_icmp_err_conf(isV6=True)
- self.sourcenat_test_icmp_echo6_conf()
-
- def test_snat_v4(self):
- # """ CNat Source Nat v4 """
- self.sourcenat_test_tcp_udp_conf(TCP)
- self.sourcenat_test_tcp_udp_conf(UDP)
- self.sourcenat_test_icmp_err_conf()
- self.sourcenat_test_icmp_echo4_conf()
-
- def sourcenat_test_icmp_echo6_conf(self):
- sports = [1234, 1235]
- dports = [6661, 6662]
-
- for nbr, remote_host in enumerate(self.pg1.remote_hosts):
- client_addr = self.pg0.remote_hosts[0].ip6
- remote_addr = self.pg1.remote_hosts[nbr].ip6
- src_nat_addr = self.pg2.remote_hosts[0].ip6
-
- # ping from pods to outside network
- p1 = (
- Ether(dst=self.pg0.local_mac,
- src=self.pg0.remote_hosts[0].mac) /
- IPv6(src=client_addr, dst=remote_addr) /
- ICMPv6EchoRequest(id=0xfeed) /
- Raw())
-
- rxs = self.send_and_expect(
- self.pg0,
- p1 * N_PKTS,
- self.pg1)
-
- for rx in rxs:
- self.assertEqual(rx[IPv6].src, src_nat_addr)
- self.assert_packet_checksums_valid(rx)
-
- received_id = rx[0][ICMPv6EchoRequest].id
- # ping reply from outside to pods
- p2 = (
- Ether(dst=self.pg1.local_mac,
- src=self.pg1.remote_hosts[nbr].mac) /
- IPv6(src=remote_addr, dst=src_nat_addr) /
- ICMPv6EchoReply(id=received_id))
- rxs = self.send_and_expect(
- self.pg1,
- p2 * N_PKTS,
- self.pg0)
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IPv6].src, remote_addr)
- self.assertEqual(rx[ICMPv6EchoReply].id, 0xfeed)
-
- def sourcenat_test_icmp_echo4_conf(self):
- sports = [1234, 1235]
- dports = [6661, 6662]
-
- for nbr, remote_host in enumerate(self.pg1.remote_hosts):
- IP46 = IP
- client_addr = self.pg0.remote_hosts[0].ip4
- remote_addr = self.pg1.remote_hosts[nbr].ip4
- src_nat_addr = self.pg2.remote_hosts[0].ip4
-
- # ping from pods to outside network
- p1 = (
- Ether(dst=self.pg0.local_mac,
- src=self.pg0.remote_hosts[0].mac) /
- IP46(src=client_addr, dst=remote_addr) /
- ICMP(type=8, id=0xfeed) /
- Raw())
-
- rxs = self.send_and_expect(
- self.pg0,
- p1 * N_PKTS,
- self.pg1)
-
- for rx in rxs:
- self.assertEqual(rx[IP46].src, src_nat_addr)
- self.assert_packet_checksums_valid(rx)
-
- received_id = rx[0][ICMP].id
- # ping reply from outside to pods
- p2 = (
- Ether(dst=self.pg1.local_mac,
- src=self.pg1.remote_hosts[nbr].mac) /
- IP46(src=remote_addr, dst=src_nat_addr) /
- ICMP(type=0, id=received_id))
- rxs = self.send_and_expect(
- self.pg1,
- p2 * N_PKTS,
- self.pg0)
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].src, remote_addr)
- self.assertEqual(rx[ICMP].id, 0xfeed)
-
- def sourcenat_test_icmp_err_conf(self, isV6=False):
- sports = [1234, 1235]
- dports = [6661, 6662]
-
- for nbr, remote_host in enumerate(self.pg1.remote_hosts):
- if isV6:
- IP46 = IPv6
- client_addr = self.pg0.remote_hosts[0].ip6
- remote_addr = self.pg1.remote_hosts[nbr].ip6
- src_nat_addr = self.pg2.remote_hosts[0].ip6
- ICMP46 = ICMPv6DestUnreach
- ICMPelem = ICMPv6DestUnreach(code=1)
- IP46error = IPerror6
- else:
- IP46 = IP
- client_addr = self.pg0.remote_hosts[0].ip4
- remote_addr = self.pg1.remote_hosts[nbr].ip4
- src_nat_addr = self.pg2.remote_hosts[0].ip4
- IP46error = IPerror
- ICMP46 = ICMP
- ICMPelem = ICMP(type=11)
-
- # from pods to outside network
- p1 = (
- Ether(dst=self.pg0.local_mac,
- src=self.pg0.remote_hosts[0].mac) /
- IP46(src=client_addr, dst=remote_addr) /
- TCP(sport=sports[nbr], dport=dports[nbr]) /
- Raw())
-
- rxs = self.send_and_expect(
- self.pg0,
- p1 * N_PKTS,
- self.pg1)
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].dst, remote_addr)
- self.assertEqual(rx[TCP].dport, dports[nbr])
- self.assertEqual(rx[IP46].src, src_nat_addr)
- sport = rx[TCP].sport
-
- InnerIP = rxs[0][IP46]
- # from outside to pods, ICMP error
- p2 = (
- Ether(dst=self.pg1.local_mac,
- src=self.pg1.remote_hosts[nbr].mac) /
- IP46(src=remote_addr, dst=src_nat_addr) /
- ICMPelem / InnerIP)
-
- rxs = self.send_and_expect(
- self.pg1,
- p2 * N_PKTS,
- self.pg0)
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].src, remote_addr)
- self.assertEqual(rx[ICMP46][IP46error].src, client_addr)
- self.assertEqual(rx[ICMP46][IP46error].dst, remote_addr)
- self.assertEqual(rx[ICMP46][IP46error]
- [TCPerror].sport, sports[nbr])
- self.assertEqual(rx[ICMP46][IP46error]
- [TCPerror].dport, dports[nbr])
-
- def sourcenat_test_tcp_udp_conf(self, l4p, isV6=False):
- sports = [1234, 1235]
- dports = [6661, 6662]
-
- for nbr, remote_host in enumerate(self.pg1.remote_hosts):
- if isV6:
- IP46 = IPv6
- client_addr = self.pg0.remote_hosts[0].ip6
- remote_addr = self.pg1.remote_hosts[nbr].ip6
- src_nat_addr = self.pg2.remote_hosts[0].ip6
- exclude_prefix = ip_network(
- "%s/100" % remote_addr, strict=False)
- else:
- IP46 = IP
- client_addr = self.pg0.remote_hosts[0].ip4
- remote_addr = self.pg1.remote_hosts[nbr].ip4
- src_nat_addr = self.pg2.remote_hosts[0].ip4
- exclude_prefix = ip_network(
- "%s/16" % remote_addr, strict=False)
- # from pods to outside network
- p1 = (
- Ether(dst=self.pg0.local_mac,
- src=self.pg0.remote_hosts[0].mac) /
- IP46(src=client_addr, dst=remote_addr) /
- l4p(sport=sports[nbr], dport=dports[nbr]) /
- Raw())
-
- self.vapi.cli("trace add pg-input 1")
- rxs = self.send_and_expect(
- self.pg0,
- p1 * N_PKTS,
- self.pg1)
- self.logger.info(self.vapi.cli("show trace max 1"))
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].dst, remote_addr)
- self.assertEqual(rx[l4p].dport, dports[nbr])
- self.assertEqual(rx[IP46].src, src_nat_addr)
- sport = rx[l4p].sport
-
- # from outside to pods
- p2 = (
- Ether(dst=self.pg1.local_mac,
- src=self.pg1.remote_hosts[nbr].mac) /
- IP46(src=remote_addr, dst=src_nat_addr) /
- l4p(sport=dports[nbr], dport=sport) /
- Raw())
-
- rxs = self.send_and_expect(
- self.pg1,
- p2 * N_PKTS,
- self.pg0)
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].dst, client_addr)
- self.assertEqual(rx[l4p].dport, sports[nbr])
- self.assertEqual(rx[l4p].sport, dports[nbr])
- self.assertEqual(rx[IP46].src, remote_addr)
-
- # add remote host to exclude list
- self.vapi.cnat_snat_policy_add_del_exclude_pfx(
- prefix=exclude_prefix, is_add=1)
- self.vapi.cnat_session_purge()
-
- rxs = self.send_and_expect(
- self.pg0,
- p1 * N_PKTS,
- self.pg1)
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].dst, remote_addr)
- self.assertEqual(rx[l4p].dport, dports[nbr])
- self.assertEqual(rx[IP46].src, client_addr)
-
- # remove remote host from exclude list
- self.vapi.cnat_snat_policy_add_del_exclude_pfx(
- prefix=exclude_prefix, is_add=0)
- self.vapi.cnat_session_purge()
-
- rxs = self.send_and_expect(
- self.pg0,
- p1 * N_PKTS,
- self.pg1)
-
- for rx in rxs:
- self.assert_packet_checksums_valid(rx)
- self.assertEqual(rx[IP46].dst, remote_addr)
- self.assertEqual(rx[l4p].dport, dports[nbr])
- self.assertEqual(rx[IP46].src, src_nat_addr)
-
- self.vapi.cnat_session_purge()
-
-
-class TestCNatDHCP(VppTestCase):
- """ CNat Translation """
- extra_vpp_punt_config = ["cnat", "{",
- "session-db-buckets", "64",
- "session-cleanup-timeout", "0.1",
- "session-max-age", "1",
- "tcp-max-age", "1",
- "scanner", "off", "}"]
-
- @classmethod
- def setUpClass(cls):
- super(TestCNatDHCP, cls).setUpClass()
-
- @classmethod
- def tearDownClass(cls):
- super(TestCNatDHCP, cls).tearDownClass()
-
- def tearDown(self):
- for i in self.pg_interfaces:
- i.admin_down()
- super(TestCNatDHCP, self).tearDown()
-
- def create_translation(self, vip_pg, *args, is_v6=False):
- vip = Ep(sw_if_index=vip_pg.sw_if_index, is_v6=is_v6)
- paths = []
- for (src_pg, dst_pg) in args:
- paths.append(EpTuple(
- Ep.from_pg(src_pg, is_v6=is_v6),
- Ep.from_pg(dst_pg, is_v6=is_v6)
- ))
- t1 = VppCNatTranslation(self, TCP, vip, paths)
- t1.add_vpp_config()
- return t1
-
- def make_addr(self, sw_if_index, i, is_v6):
- if is_v6:
- return "fd01:%x::%u" % (sw_if_index, i + 1)
- else:
- return "172.16.%u.%u" % (sw_if_index, i)
-
- def make_prefix(self, sw_if_index, i, is_v6):
- if is_v6:
- return "%s/128" % self.make_addr(sw_if_index, i, is_v6)
- else:
- return "%s/32" % self.make_addr(sw_if_index, i, is_v6)
-
- def check_resolved(self, tr, vip_pg, *args, i=0, is_v6=False):
- qt1 = tr.query_vpp_config()
- self.assertEqual(str(qt1.vip.addr), self.make_addr(
- vip_pg.sw_if_index, i, is_v6))
- for (src_pg, dst_pg), path in zip(args, qt1.paths):
- if src_pg:
- self.assertEqual(str(path.src_ep.addr), self.make_addr(
- src_pg.sw_if_index, i, is_v6))
- if dst_pg:
- self.assertEqual(str(path.dst_ep.addr), self.make_addr(
- dst_pg.sw_if_index, i, is_v6))
-
- def config_ips(self, rng, is_add=1, is_v6=False):
- for pg, i in product(self.pg_interfaces, rng):
- self.vapi.sw_interface_add_del_address(
- sw_if_index=pg.sw_if_index,
- prefix=self.make_prefix(pg.sw_if_index, i, is_v6),
- is_add=is_add)
-
- def test_dhcp_v4(self):
- self.create_pg_interfaces(range(5))
- for i in self.pg_interfaces:
- i.admin_up()
- pglist = (self.pg0, (self.pg1, self.pg2), (self.pg1, self.pg4))
- t1 = self.create_translation(*pglist)
- self.config_ips([0])
- self.check_resolved(t1, *pglist)
- self.config_ips([1])
- self.config_ips([0], is_add=0)
- self.check_resolved(t1, *pglist, i=1)
- self.config_ips([1], is_add=0)
- t1.remove_vpp_config()
-
- def test_dhcp_v6(self):
- self.create_pg_interfaces(range(5))
- for i in self.pg_interfaces:
- i.admin_up()
- pglist = (self.pg0, (self.pg1, self.pg2), (self.pg1, self.pg4))
- t1 = self.create_translation(*pglist, is_v6=True)
- self.config_ips([0], is_v6=True)
- self.check_resolved(t1, *pglist, is_v6=True)
- self.config_ips([1], is_v6=True)
- self.config_ips([0], is_add=0, is_v6=True)
- self.check_resolved(t1, *pglist, i=1, is_v6=True)
- self.config_ips([1], is_add=0, is_v6=True)
- t1.remove_vpp_config()
-
- def test_dhcp_snat(self):
- self.create_pg_interfaces(range(1))
- for i in self.pg_interfaces:
- i.admin_up()
- self.vapi.cnat_set_snat_addresses(sw_if_index=self.pg0.sw_if_index)
- self.config_ips([0], is_v6=False)
- self.config_ips([0], is_v6=True)
- r = self.vapi.cnat_get_snat_addresses()
- self.assertEqual(str(r.snat_ip4), self.make_addr(
- self.pg0.sw_if_index, 0, False))
- self.assertEqual(str(r.snat_ip6), self.make_addr(
- self.pg0.sw_if_index, 0, True))
- self.config_ips([1], is_v6=False)
- self.config_ips([1], is_v6=True)
- self.config_ips([0], is_add=0, is_v6=False)
- self.config_ips([0], is_add=0, is_v6=True)
- r = self.vapi.cnat_get_snat_addresses()
- self.assertEqual(str(r.snat_ip4), self.make_addr(
- self.pg0.sw_if_index, 1, False))
- self.assertEqual(str(r.snat_ip6), self.make_addr(
- self.pg0.sw_if_index, 1, True))
- self.config_ips([1], is_add=0, is_v6=False)
- self.config_ips([1], is_add=0, is_v6=True)
- self.vapi.cnat_set_snat_addresses(sw_if_index=INVALID_INDEX)
-
-
-if __name__ == '__main__':
- unittest.main(testRunner=VppTestRunner)