def _generate_port(self):
"""Get a free TCP port from the Operating System and return it.
This might fail if some other process occupies this port after this
function finished but before the neutron-server process started.
"""
return str(helpers.get_free_namespace_port())
def _generate_port(self):
"""Get a free TCP port from the Operating System and return it.
This might fail if some other process occupies this port after this
function finished but before the neutron-server process started.
"""
return str(helpers.get_free_namespace_port())
def setUp(self):
super(IptablesManagerTestCase, self).setUp()
self.client_ns, self.server_ns = self.prepare_veth_pairs()
self.client_fw, self.server_fw = self.create_firewalls()
# The port is used in isolated namespace that precludes possibility of
# port conflicts
self.port = helpers.get_free_namespace_port(self.server_ns.namespace)
def setUp(self):
super(IptablesManagerTestCase, self).setUp()
self.client_ns, self.server_ns = self.prepare_veth_pairs()
self.client_fw, self.server_fw = self.create_firewalls()
# The port is used in isolated namespace that precludes possibility of
# port conflicts
self.port = helpers.get_free_namespace_port(self.server_ns.namespace)
def setUp(self):
super(IptablesManagerTestCase, self).setUp()
bridge = self.useFixture(net_helpers.VethBridgeFixture()).bridge
self.client, self.server = self.useFixture(
machine_fixtures.PeerMachines(bridge)).machines
self.client_fw, self.server_fw = self.create_firewalls()
# The port is used in isolated namespace that precludes possibility of
# port conflicts
self.port = helpers.get_free_namespace_port(self.server.namespace)
def setUp(self):
super(IptablesManagerTestCase, self).setUp()
bridge = self.useFixture(net_helpers.VethBridgeFixture()).bridge
self.client, self.server = self.useFixture(
machine_fixtures.PeerMachines(bridge)).machines
self.client_fw, self.server_fw = self.create_firewalls()
# The port is used in isolated namespace that precludes possibility of
# port conflicts
self.port = helpers.get_free_namespace_port(self.server.namespace)
def test_conntrack_disassociate_fip(self):
'''Test that conntrack immediately drops stateful connection
that uses floating IP once it's disassociated.
'''
router_info = self.generate_router_info(enable_ha=False)
router = self.manage_router(self.agent, router_info)
port = helpers.get_free_namespace_port(router.ns_name)
client_address = '19.4.4.3'
server_address = '35.4.0.4'
def clean_fips(router):
router.router[l3_constants.FLOATINGIP_KEY] = []
clean_fips(router)
self._add_fip(router, client_address, fixed_address=server_address)
router.process(self.agent)
router_ns = ip_lib.IPWrapper(namespace=router.ns_name)
netcat = helpers.NetcatTester(router_ns,
router_ns,
server_address,
port,
client_address=client_address,
run_as_root=True,
udp=False)
self.addCleanup(netcat.stop_processes)
def assert_num_of_conntrack_rules(n):
out = router_ns.netns.execute(
["conntrack", "-L", "--orig-src", client_address])
self.assertEqual(
n, len([line for line in out.strip().split('\n') if line]))
with self.assert_max_execution_time(100):
assert_num_of_conntrack_rules(0)
self.assertTrue(netcat.test_connectivity())
assert_num_of_conntrack_rules(1)
clean_fips(router)
router.process(self.agent)
assert_num_of_conntrack_rules(0)
with testtools.ExpectedException(RuntimeError):
netcat.test_connectivity()
def test_conntrack_disassociate_fip(self):
'''Test that conntrack immediately drops stateful connection
that uses floating IP once it's disassociated.
'''
router_info = self.generate_router_info(enable_ha=False)
router = self.manage_router(self.agent, router_info)
port = helpers.get_free_namespace_port(router.ns_name)
client_address = '19.4.4.3'
server_address = '35.4.0.4'
def clean_fips(router):
router.router[l3_constants.FLOATINGIP_KEY] = []
clean_fips(router)
self._add_fip(router, client_address, fixed_address=server_address)
self.agent.process_router(router)
router_ns = ip_lib.IPWrapper(self.root_helper,
namespace=router.ns_name)
netcat = helpers.NetcatTester(router_ns, router_ns,
server_address, port,
client_address=client_address,
root_helper=self.root_helper,
udp=False)
self.addCleanup(netcat.stop_processes)
def assert_num_of_conntrack_rules(n):
out = router_ns.netns.execute(["conntrack", "-L",
"--orig-src", client_address])
self.assertEqual(
n, len([line for line in out.strip().split('\n') if line]))
with self.assert_max_execution_time(100):
assert_num_of_conntrack_rules(0)
self.assertTrue(netcat.test_connectivity())
assert_num_of_conntrack_rules(1)
clean_fips(router)
self.agent.process_router(router)
assert_num_of_conntrack_rules(0)
with testtools.ExpectedException(RuntimeError):
netcat.test_connectivity()
def test_fip_connection_from_same_subnet(self):
'''Test connection to floatingip which is associated with
fixed_ip on the same subnet of the source fixed_ip.
In other words it confirms that return packets surely
go through the router.
'''
router_info = self.generate_router_info(enable_ha=False)
router = self.manage_router(self.agent, router_info)
router_ip_cidr = self._port_first_ip_cidr(router.internal_ports[0])
router_ip = router_ip_cidr.partition('/')[0]
src_ip_cidr = net_helpers.increment_ip_cidr(router_ip_cidr)
dst_ip_cidr = net_helpers.increment_ip_cidr(src_ip_cidr)
dst_ip = dst_ip_cidr.partition('/')[0]
dst_fip = '19.4.4.10'
router.router[l3_constants.FLOATINGIP_KEY] = []
self._add_fip(router, dst_fip, fixed_address=dst_ip)
router.process(self.agent)
br_int = get_ovs_bridge(self.agent.conf.ovs_integration_bridge)
# FIXME(cbrandily): temporary, will be replaced by fake machines
src_ns = self._create_namespace(prefix='test-src-')
src_port = self.useFixture(
net_helpers.OVSPortFixture(br_int, src_ns.namespace)).port
src_port.addr.add(src_ip_cidr)
net_helpers.set_namespace_gateway(src_port, router_ip)
dst_ns = self._create_namespace(prefix='test-dst-')
dst_port = self.useFixture(
net_helpers.OVSPortFixture(br_int, dst_ns.namespace)).port
dst_port.addr.add(dst_ip_cidr)
net_helpers.set_namespace_gateway(dst_port, router_ip)
protocol_port = helpers.get_free_namespace_port(dst_ns)
# client sends to fip
netcat = helpers.NetcatTester(src_ns,
dst_ns,
dst_ip,
protocol_port,
client_address=dst_fip,
run_as_root=True,
udp=False)
self.addCleanup(netcat.stop_processes)
self.assertTrue(netcat.test_connectivity())
def test_fip_connection_from_same_subnet(self):
'''Test connection to floatingip which is associated with
fixed_ip on the same subnet of the source fixed_ip.
In other words it confirms that return packets surely
go through the router.
'''
router_info = self.generate_router_info(enable_ha=False)
router = self.manage_router(self.agent, router_info)
router_ip_cidr = self._port_first_ip_cidr(router.internal_ports[0])
router_ip = router_ip_cidr.partition('/')[0]
src_ip_cidr = net_helpers.increment_ip_cidr(router_ip_cidr)
dst_ip_cidr = net_helpers.increment_ip_cidr(src_ip_cidr)
dst_ip = dst_ip_cidr.partition('/')[0]
dst_fip = '19.4.4.10'
router.router[l3_constants.FLOATINGIP_KEY] = []
self._add_fip(router, dst_fip, fixed_address=dst_ip)
router.process(self.agent)
br_int = get_ovs_bridge(self.agent.conf.ovs_integration_bridge)
# FIXME(cbrandily): temporary, will be replaced by fake machines
src_ns = self._create_namespace(prefix='test-src-')
src_port = self.useFixture(
net_helpers.OVSPortFixture(br_int, src_ns.namespace)).port
src_port.addr.add(src_ip_cidr)
net_helpers.set_namespace_gateway(src_port, router_ip)
dst_ns = self._create_namespace(prefix='test-dst-')
dst_port = self.useFixture(
net_helpers.OVSPortFixture(br_int, dst_ns.namespace)).port
dst_port.addr.add(dst_ip_cidr)
net_helpers.set_namespace_gateway(dst_port, router_ip)
protocol_port = helpers.get_free_namespace_port(dst_ns)
# client sends to fip
netcat = helpers.NetcatTester(src_ns, dst_ns, dst_ip,
protocol_port,
client_address=dst_fip,
run_as_root=True,
udp=False)
self.addCleanup(netcat.stop_processes)
self.assertTrue(netcat.test_connectivity())
