OpenStack Networking (Neutron)
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# Copyright (c) 2015 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import functools
from neutron_lib import exceptions
from neutron_lib.utils import net
from oslo_config import cfg
from oslo_utils import uuidutils
import testtools
from neutron.agent.linux import interface
from neutron.agent.linux import ip_lib
from neutron.common import utils
from neutron.conf.agent import common as config
from neutron.tests.common import net_helpers
from neutron.tests.functional.agent.linux import base as linux_base
from neutron.tests.functional import base
class InterfaceDriverTestCaseMixin(object):
def _test_mtu_set_after_action(self, device_name, br_name, namespace,
action=None):
mac_address = net.get_random_mac('fa:16:3e:00:00:00'.split(':'))
plug = functools.partial(
self.interface.plug,
network_id=uuidutils.generate_uuid(),
port_id=uuidutils.generate_uuid(),
device_name=device_name,
mac_address=mac_address,
bridge=self.bridge_name,
namespace=namespace)
plug(mtu=1500)
self.assertTrue(ip_lib.device_exists(device_name, namespace))
action = action or plug
for mtu in (1450, 1500, 9000, 9000, 1450):
action(mtu=mtu)
self.assertEqual(
mtu,
ip_lib.IPDevice(device_name, namespace=namespace).link.mtu)
def test_plug_multiple_calls_update_mtu(self):
device_name = utils.get_rand_name()
namespace = self.useFixture(net_helpers.NamespaceFixture()).name
self._test_mtu_set_after_action(
device_name, self.bridge_name, namespace)
def test_set_mtu(self):
device_name = utils.get_rand_name()
namespace = self.useFixture(net_helpers.NamespaceFixture()).name
self._test_mtu_set_after_action(
device_name, self.bridge_name, namespace,
functools.partial(
self.interface.set_mtu,
device_name=device_name, namespace=namespace))
def test_ipv6_lla_create_and_get(self):
lla_address = "fe80::f816:3eff:fe66:73bf/64"
global_address = "2001::1/64"
device_name = utils.get_rand_name()
namespace = self.useFixture(net_helpers.NamespaceFixture())
namespace.ip_wrapper.add_dummy(device_name)
self.interface.add_ipv6_addr(
device_name, lla_address, namespace.name, 'link')
self.interface.add_ipv6_addr(
device_name, global_address, namespace.name, 'global')
existing_addresses = [
a['cidr'] for a in self.interface.get_ipv6_llas(
device_name, namespace.name)]
self.assertIn(lla_address, existing_addresses)
self.assertNotIn(global_address, existing_addresses)
class OVSInterfaceDriverTestCase(linux_base.BaseOVSLinuxTestCase,
InterfaceDriverTestCaseMixin):
def setUp(self):
super(OVSInterfaceDriverTestCase, self).setUp()
conf = cfg.ConfigOpts()
config.register_interface_opts(conf)
self.interface = interface.OVSInterfaceDriver(conf)
self.bridge = self.useFixture(net_helpers.OVSBridgeFixture()).bridge
@property
def bridge_name(self):
return self.bridge.br_name
def test_plug_checks_if_bridge_exists(self):
with testtools.ExpectedException(exceptions.BridgeDoesNotExist):
self.interface.plug(network_id=42,
port_id=71,
device_name='not_a_device',
mac_address='',
bridge='not_a_bridge',
namespace='not_a_namespace')
def test_plug_succeeds(self):
device_name = utils.get_rand_name()
mac_address = net.get_random_mac('fa:16:3e:00:00:00'.split(':'))
namespace = self.useFixture(net_helpers.NamespaceFixture()).name
self.assertFalse(self.bridge.get_port_name_list())
self.interface.plug(network_id=uuidutils.generate_uuid(),
port_id=uuidutils.generate_uuid(),
device_name=device_name,
mac_address=mac_address,
bridge=self.bridge.br_name,
namespace=namespace)
self.assertIn(device_name, self.bridge.get_port_name_list())
self.assertTrue(ip_lib.device_exists(device_name, namespace))
def test_plug_with_namespace_sets_mtu_higher_than_bridge(self):
# First, add a new linuxbridge port with reduced MTU to OVS bridge
lb_bridge = self.useFixture(
net_helpers.LinuxBridgeFixture()).bridge
lb_bridge_port = self.useFixture(
net_helpers.LinuxBridgePortFixture(lb_bridge))
lb_bridge_port.port.link.set_mtu(1400)
self.bridge.add_port(lb_bridge_port.port.name)
device_name = utils.get_rand_name()
namespace = self.useFixture(net_helpers.NamespaceFixture()).name
# Now plug a device with intended MTU that is higher than for the port
# above and validate that its MTU is not reduced to the least MTU on
# the bridge
self._test_mtu_set_after_action(
device_name, self.bridge_name, namespace)
class BridgeInterfaceDriverTestCase(base.BaseSudoTestCase,
InterfaceDriverTestCaseMixin):
def setUp(self):
super(BridgeInterfaceDriverTestCase, self).setUp()
conf = cfg.ConfigOpts()
config.register_interface_opts(conf)
self.interface = interface.BridgeInterfaceDriver(conf)
self.bridge = self.useFixture(net_helpers.LinuxBridgeFixture()).bridge
@property
def bridge_name(self):
return self.bridge.name