306 lines
12 KiB
Python
306 lines
12 KiB
Python
# Copyright (c) 2014 Red Hat, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import collections
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import netaddr
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from neutron_lib import constants
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from neutron_lib.utils import net
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import importutils
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import testtools
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from neutron.agent.linux import ip_lib
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from neutron.common import utils
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from neutron.conf.agent import common as config
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from neutron.tests.common import net_helpers
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from neutron.tests.functional import base as functional_base
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LOG = logging.getLogger(__name__)
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Device = collections.namedtuple('Device',
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'name ip_cidrs mac_address namespace')
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WRONG_IP = '0.0.0.0'
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TEST_IP = '240.0.0.1'
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TEST_IP_NEIGH = '240.0.0.2'
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class IpLibTestFramework(functional_base.BaseSudoTestCase):
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def setUp(self):
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super(IpLibTestFramework, self).setUp()
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self._configure()
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def _configure(self):
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config.register_interface_driver_opts_helper(cfg.CONF)
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cfg.CONF.set_override(
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'interface_driver',
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'neutron.agent.linux.interface.OVSInterfaceDriver')
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config.register_interface_opts()
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self.driver = importutils.import_object(cfg.CONF.interface_driver,
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cfg.CONF)
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def generate_device_details(self, name=None, ip_cidrs=None,
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mac_address=None, namespace=None):
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return Device(name or utils.get_rand_name(),
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ip_cidrs or ["%s/24" % TEST_IP],
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mac_address or
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net.get_random_mac('fa:16:3e:00:00:00'.split(':')),
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namespace or utils.get_rand_name())
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def _safe_delete_device(self, device):
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try:
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device.link.delete()
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except RuntimeError:
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LOG.debug('Could not delete %s, was it already deleted?', device)
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def manage_device(self, attr):
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"""Create a tuntap with the specified attributes.
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The device is cleaned up at the end of the test.
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:param attr: A Device namedtuple
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:return: A tuntap ip_lib.IPDevice
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"""
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ip = ip_lib.IPWrapper(namespace=attr.namespace)
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if attr.namespace:
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ip.netns.add(attr.namespace)
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self.addCleanup(ip.netns.delete, attr.namespace)
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tap_device = ip.add_tuntap(attr.name)
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self.addCleanup(self._safe_delete_device, tap_device)
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tap_device.link.set_address(attr.mac_address)
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self.driver.init_l3(attr.name, attr.ip_cidrs,
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namespace=attr.namespace)
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tap_device.link.set_up()
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return tap_device
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class IpLibTestCase(IpLibTestFramework):
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def test_device_exists(self):
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attr = self.generate_device_details()
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self.assertFalse(
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ip_lib.device_exists(attr.name, namespace=attr.namespace))
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device = self.manage_device(attr)
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self.assertTrue(
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ip_lib.device_exists(device.name, namespace=attr.namespace))
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self.assertFalse(
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ip_lib.device_exists(attr.name, namespace='wrong_namespace'))
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device.link.delete()
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self.assertFalse(
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ip_lib.device_exists(attr.name, namespace=attr.namespace))
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def test_ipdevice_exists(self):
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attr = self.generate_device_details()
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device = self.manage_device(attr)
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self.assertTrue(device.exists())
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device.link.delete()
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self.assertFalse(device.exists())
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def test_vxlan_exists(self):
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attr = self.generate_device_details()
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ip = ip_lib.IPWrapper(namespace=attr.namespace)
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ip.netns.add(attr.namespace)
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self.addCleanup(ip.netns.delete, attr.namespace)
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self.assertFalse(ip_lib.vxlan_in_use(9999, namespace=attr.namespace))
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device = ip.add_vxlan(attr.name, 9999)
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self.addCleanup(self._safe_delete_device, device)
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self.assertTrue(ip_lib.vxlan_in_use(9999, namespace=attr.namespace))
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device.link.delete()
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self.assertFalse(ip_lib.vxlan_in_use(9999, namespace=attr.namespace))
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def test_ipwrapper_get_device_by_ip_None(self):
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ip_wrapper = ip_lib.IPWrapper(namespace=None)
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self.assertIsNone(ip_wrapper.get_device_by_ip(ip=None))
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def test_ipwrapper_get_device_by_ip(self):
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attr = self.generate_device_details()
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self.manage_device(attr)
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ip_wrapper = ip_lib.IPWrapper(namespace=attr.namespace)
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self.assertEqual(attr.name, ip_wrapper.get_device_by_ip(TEST_IP).name)
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self.assertIsNone(ip_wrapper.get_device_by_ip(WRONG_IP))
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def test_device_exists_with_ips_and_mac(self):
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attr = self.generate_device_details()
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device = self.manage_device(attr)
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self.assertTrue(
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ip_lib.device_exists_with_ips_and_mac(*attr))
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wrong_ip_cidr = '10.0.0.1/8'
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wrong_mac_address = 'aa:aa:aa:aa:aa:aa'
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attr = self.generate_device_details(name='wrong_name')
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self.assertFalse(
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ip_lib.device_exists_with_ips_and_mac(*attr))
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attr = self.generate_device_details(ip_cidrs=[wrong_ip_cidr])
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self.assertFalse(ip_lib.device_exists_with_ips_and_mac(*attr))
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attr = self.generate_device_details(mac_address=wrong_mac_address)
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self.assertFalse(ip_lib.device_exists_with_ips_and_mac(*attr))
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attr = self.generate_device_details(namespace='wrong_namespace')
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self.assertFalse(ip_lib.device_exists_with_ips_and_mac(*attr))
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device.link.delete()
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def test_get_device_mac(self):
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attr = self.generate_device_details()
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device = self.manage_device(attr)
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mac_address = ip_lib.get_device_mac(attr.name,
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namespace=attr.namespace)
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self.assertEqual(attr.mac_address, mac_address)
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device.link.delete()
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def test_get_device_mac_too_long_name(self):
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name = utils.get_rand_name(
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max_length=constants.DEVICE_NAME_MAX_LEN + 5)
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attr = self.generate_device_details(name=name)
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device = self.manage_device(attr)
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mac_address = ip_lib.get_device_mac(attr.name,
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namespace=attr.namespace)
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self.assertEqual(attr.mac_address, mac_address)
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device.link.delete()
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def test_get_routing_table(self):
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attr = self.generate_device_details(
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ip_cidrs=["%s/24" % TEST_IP, "fd00::1/64"]
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)
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device = self.manage_device(attr)
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device_ip = attr.ip_cidrs[0].split('/')[0]
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destination = '8.8.8.0/24'
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device.route.add_route(destination, device_ip)
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destination6 = 'fd01::/64'
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device.route.add_route(destination6, "fd00::2")
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expected_routes = [{'nexthop': device_ip,
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'device': attr.name,
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'destination': destination,
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'scope': 'universe'},
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{'nexthop': None,
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'device': attr.name,
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'destination': str(
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netaddr.IPNetwork(attr.ip_cidrs[0]).cidr),
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'scope': 'link'}]
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routes = ip_lib.get_routing_table(4, namespace=attr.namespace)
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self.assertItemsEqual(expected_routes, routes)
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self.assertIsInstance(routes, list)
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expected_routes6 = [{'nexthop': "fd00::2",
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'device': attr.name,
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'destination': destination6,
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'scope': 'universe'},
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{'nexthop': None,
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'device': attr.name,
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'destination': str(
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netaddr.IPNetwork(attr.ip_cidrs[1]).cidr),
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'scope': 'universe'}]
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routes6 = ip_lib.get_routing_table(6, namespace=attr.namespace)
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self.assertItemsEqual(expected_routes6, routes6)
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self.assertIsInstance(routes6, list)
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def test_get_routing_table_no_namespace(self):
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with testtools.ExpectedException(ip_lib.NetworkNamespaceNotFound):
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ip_lib.get_routing_table(4, namespace="nonexistent-netns")
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def test_get_neigh_entries(self):
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attr = self.generate_device_details(
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ip_cidrs=["%s/24" % TEST_IP, "fd00::1/64"]
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)
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mac_address = net.get_random_mac('fa:16:3e:00:00:00'.split(':'))
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device = self.manage_device(attr)
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device.neigh.add(TEST_IP_NEIGH, mac_address)
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expected_neighs = [{'dst': TEST_IP_NEIGH,
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'lladdr': mac_address,
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'device': attr.name}]
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neighs = device.neigh.dump(4)
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self.assertItemsEqual(expected_neighs, neighs)
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self.assertIsInstance(neighs, list)
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device.neigh.delete(TEST_IP_NEIGH, mac_address)
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neighs = device.neigh.dump(4, dst=TEST_IP_NEIGH, lladdr=mac_address)
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self.assertEqual([], neighs)
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def test_get_neigh_entries_no_namespace(self):
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with testtools.ExpectedException(ip_lib.NetworkNamespaceNotFound):
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ip_lib.dump_neigh_entries(4, namespace="nonexistent-netns")
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def test_get_neigh_entries_no_interface(self):
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attr = self.generate_device_details(
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ip_cidrs=["%s/24" % TEST_IP, "fd00::1/64"]
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)
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self.manage_device(attr)
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with testtools.ExpectedException(ip_lib.NetworkInterfaceNotFound):
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ip_lib.dump_neigh_entries(4, device="nosuchdevice",
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namespace=attr.namespace)
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def test_delete_neigh_entries(self):
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attr = self.generate_device_details(
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ip_cidrs=["%s/24" % TEST_IP, "fd00::1/64"]
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)
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mac_address = net.get_random_mac('fa:16:3e:00:00:00'.split(':'))
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device = self.manage_device(attr)
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# trying to delete a non-existent entry shouldn't raise an error
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device.neigh.delete(TEST_IP_NEIGH, mac_address)
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def _check_for_device_name(self, ip, name, should_exist):
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exist = any(d for d in ip.get_devices() if d.name == name)
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self.assertEqual(should_exist, exist)
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def test_dummy_exists(self):
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namespace = self.useFixture(net_helpers.NamespaceFixture())
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dev_name = utils.get_rand_name()
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device = namespace.ip_wrapper.add_dummy(dev_name)
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self.addCleanup(self._safe_delete_device, device)
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self._check_for_device_name(namespace.ip_wrapper, dev_name, True)
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device.link.delete()
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self._check_for_device_name(namespace.ip_wrapper, dev_name, False)
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class TestSetIpNonlocalBind(functional_base.BaseSudoTestCase):
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def test_assigned_value(self):
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namespace = self.useFixture(net_helpers.NamespaceFixture())
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for expected in (0, 1):
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failed = ip_lib.set_ip_nonlocal_bind(expected, namespace.name)
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try:
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observed = ip_lib.get_ip_nonlocal_bind(namespace.name)
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except RuntimeError as rte:
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stat_message = (
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'cannot stat /proc/sys/net/ipv4/ip_nonlocal_bind')
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if stat_message in str(rte):
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raise self.skipException(
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"This kernel doesn't support %s in network "
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"namespaces." % ip_lib.IP_NONLOCAL_BIND)
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raise
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self.assertFalse(failed)
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self.assertEqual(expected, observed)
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