--- /dev/null
+# Copyright (c) 2015 Red Hat, Inc.
+# All Rights Reserved.
+#
+# 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 os.path
+
+import eventlet
+import fixtures
+import mock
+import netaddr
+from oslo_config import fixture as fixture_config
+from oslo_utils import uuidutils
+
+from neutron.agent.common import config
+from neutron.agent.common import ovs_lib
+from neutron.agent.dhcp import agent
+from neutron.agent import dhcp_agent
+from neutron.agent.linux import dhcp
+from neutron.agent.linux import interface
+from neutron.agent.linux import ip_lib
+from neutron.agent.linux import utils
+from neutron.common import constants
+from neutron.common import utils as common_utils
+from neutron.tests.common import net_helpers
+from neutron.tests.functional.agent.linux import helpers
+from neutron.tests.functional import base
+
+
+class DHCPAgentOVSTestFramework(base.BaseSudoTestCase):
+
+ _DHCP_PORT_MAC_ADDRESS = netaddr.EUI("24:77:03:7d:00:4c")
+ _DHCP_PORT_MAC_ADDRESS.dialect = netaddr.mac_unix
+ _TENANT_PORT_MAC_ADDRESS = netaddr.EUI("24:77:03:7d:00:3a")
+ _TENANT_PORT_MAC_ADDRESS.dialect = netaddr.mac_unix
+
+ _IP_ADDRS = {
+ 4: {'addr': '192.168.10.11',
+ 'cidr': '192.168.10.0/24',
+ 'gateway': '192.168.10.1'},
+ 6: {'addr': '0:0:0:0:0:ffff:c0a8:a0b',
+ 'cidr': '0:0:0:0:0:ffff:c0a8:a00/120',
+ 'gateway': '0:0:0:0:0:ffff:c0a8:a01'}, }
+
+ def setUp(self):
+ super(DHCPAgentOVSTestFramework, self).setUp()
+ config.setup_logging()
+ self.conf_fixture = self.useFixture(fixture_config.Config())
+ self.conf = self.conf_fixture.conf
+ dhcp_agent.register_options(self.conf)
+
+ # NOTE(cbrandily): TempDir fixture creates a folder with 0o700
+ # permissions but agent dir must be readable by dnsmasq user (nobody)
+ agent_config_dir = self.useFixture(fixtures.TempDir()).path
+ self.useFixture(
+ helpers.RecursivePermDirFixture(agent_config_dir, 0o555))
+
+ self.conf.set_override("dhcp_confs", agent_config_dir)
+ self.conf.set_override(
+ 'interface_driver',
+ 'neutron.agent.linux.interface.OVSInterfaceDriver')
+ self.conf.set_override('report_interval', 0, 'AGENT')
+ br_int = self.useFixture(net_helpers.OVSBridgeFixture()).bridge
+ self.conf.set_override('ovs_integration_bridge', br_int.br_name)
+
+ self.mock_plugin_api = mock.patch(
+ 'neutron.agent.dhcp.agent.DhcpPluginApi').start().return_value
+ mock.patch('neutron.agent.rpc.PluginReportStateAPI').start()
+ self.agent = agent.DhcpAgentWithStateReport('localhost')
+
+ self.ovs_driver = interface.OVSInterfaceDriver(self.conf)
+
+ def network_dict_for_dhcp(self, dhcp_enabled=True, ip_version=4):
+ net_id = uuidutils.generate_uuid()
+ subnet_dict = self.create_subnet_dict(
+ net_id, dhcp_enabled, ip_version)
+ port_dict = self.create_port_dict(
+ net_id, subnet_dict.id,
+ mac_address=str(self._DHCP_PORT_MAC_ADDRESS),
+ ip_version=ip_version)
+ port_dict.device_id = common_utils.get_dhcp_agent_device_id(
+ net_id, self.conf.host)
+ net_dict = self.create_network_dict(
+ net_id, [subnet_dict], [port_dict])
+ return net_dict
+
+ def create_subnet_dict(self, net_id, dhcp_enabled=True, ip_version=4):
+ sn_dict = dhcp.DictModel({
+ "id": uuidutils.generate_uuid(),
+ "network_id": net_id,
+ "ip_version": ip_version,
+ "cidr": self._IP_ADDRS[ip_version]['cidr'],
+ "gateway_ip": (self.
+ _IP_ADDRS[ip_version]['gateway']),
+ "enable_dhcp": dhcp_enabled,
+ "dns_nameservers": [],
+ "host_routes": [],
+ "ipv6_ra_mode": None,
+ "ipv6_address_mode": None})
+ if ip_version == 6:
+ sn_dict['ipv6_address_mode'] = constants.DHCPV6_STATEFUL
+ return sn_dict
+
+ def create_port_dict(self, network_id, subnet_id, mac_address,
+ ip_version=4, ip_address=None):
+ ip_address = (self._IP_ADDRS[ip_version]['addr']
+ if not ip_address else ip_address)
+ port_dict = dhcp.DictModel({
+ "id": uuidutils.generate_uuid(),
+ "name": "foo",
+ "mac_address": mac_address,
+ "network_id": network_id,
+ "admin_state_up": True,
+ "device_id": uuidutils.generate_uuid(),
+ "device_owner": "foo",
+ "fixed_ips": [{"subnet_id": subnet_id,
+ "ip_address": ip_address}], })
+ return port_dict
+
+ def create_network_dict(self, net_id, subnets=None, ports=None):
+ subnets = [] if not subnets else subnets
+ ports = [] if not ports else ports
+ net_dict = dhcp.NetModel(use_namespaces=True, d={
+ "id": net_id,
+ "subnets": subnets,
+ "ports": ports,
+ "admin_state_up": True,
+ "tenant_id": uuidutils.generate_uuid(), })
+ return net_dict
+
+ def get_interface_name(self, network, port):
+ device_manager = dhcp.DeviceManager(conf=self.conf, plugin=mock.Mock())
+ return device_manager.get_interface_name(network, port)
+
+ def configure_dhcp_for_network(self, network, dhcp_enabled=True):
+ self.agent.configure_dhcp_for_network(network)
+ self.addCleanup(self._cleanup_network, network, dhcp_enabled)
+
+ def _cleanup_network(self, network, dhcp_enabled):
+ self.mock_plugin_api.release_dhcp_port.return_value = None
+ if dhcp_enabled:
+ self.agent.call_driver('disable', network)
+
+ def assert_dhcp_resources(self, network, dhcp_enabled):
+ ovs = ovs_lib.BaseOVS()
+ port = network.ports[0]
+ iface_name = self.get_interface_name(network, port)
+ self.assertEqual(dhcp_enabled, ovs.port_exists(iface_name))
+ self.assert_dhcp_namespace(network.namespace, dhcp_enabled)
+ self.assert_dhcp_device(network.namespace, iface_name, dhcp_enabled)
+
+ def assert_dhcp_namespace(self, namespace, dhcp_enabled):
+ ip = ip_lib.IPWrapper()
+ self.assertEqual(dhcp_enabled, ip.netns.exists(namespace))
+
+ def assert_dhcp_device(self, namespace, dhcp_iface_name, dhcp_enabled):
+ dev = ip_lib.IPDevice(dhcp_iface_name, namespace)
+ self.assertEqual(dhcp_enabled, ip_lib.device_exists(
+ dhcp_iface_name, namespace))
+ if dhcp_enabled:
+ self.assertEqual(self._DHCP_PORT_MAC_ADDRESS, dev.link.address)
+
+ def _plug_port_for_dhcp_request(self, network, port):
+ namespace = network.namespace
+ vif_name = self.get_interface_name(network.id, port)
+
+ self.ovs_driver.plug(network.id, port.id, vif_name, port.mac_address,
+ self.conf['ovs_integration_bridge'],
+ namespace=namespace)
+
+ def _ip_list_for_vif(self, vif_name, namespace):
+ ip_device = ip_lib.IPDevice(vif_name, namespace)
+ return ip_device.addr.list(ip_version=4)
+
+ def _get_network_port_for_allocation_test(self):
+ network = self.network_dict_for_dhcp()
+ ip_addr = netaddr.IPNetwork(network.subnets[0].cidr)[1]
+ port = self.create_port_dict(
+ network.id, network.subnets[0].id,
+ mac_address=str(self._TENANT_PORT_MAC_ADDRESS),
+ ip_address=str(ip_addr))
+ return network, port
+
+ def assert_good_allocation_for_port(self, network, port):
+ vif_name = self.get_interface_name(network.id, port)
+ self._run_dhclient(vif_name, network)
+
+ predicate = lambda: len(
+ self._ip_list_for_vif(vif_name, network.namespace))
+ utils.wait_until_true(predicate, 10)
+
+ ip_list = self._ip_list_for_vif(vif_name, network.namespace)
+ cidr = ip_list[0].get('cidr')
+ ip_addr = str(netaddr.IPNetwork(cidr).ip)
+ self.assertEqual(port.fixed_ips[0].ip_address, ip_addr)
+
+ def assert_bad_allocation_for_port(self, network, port):
+ vif_name = self.get_interface_name(network.id, port)
+ self._run_dhclient(vif_name, network)
+ # we need wait some time (10 seconds is enough) and check
+ # that dhclient not configured ip-address for interface
+ eventlet.sleep(10)
+
+ ip_list = self._ip_list_for_vif(vif_name, network.namespace)
+ self.assertEqual([], ip_list)
+
+ def _run_dhclient(self, vif_name, network):
+ # NOTE: Before run dhclient we should create resolv.conf file
+ # in namespace, where we will run dhclient for testing address
+ # allocation for port, otherwise, dhclient will override
+ # system /etc/resolv.conf
+ # By default, folder for dhcp-agent's namespace doesn't exist
+ # that's why we use AdminDirFixture for create directory
+ # with admin permissions in /etc/netns/ and touch resolv.conf in it.
+ etc_dir = '/etc/netns/%s' % network.namespace
+ self.useFixture(helpers.AdminDirFixture(etc_dir))
+ cmd = ['touch', os.path.join(etc_dir, 'resolv.conf')]
+ utils.execute(cmd, run_as_root=True)
+ dhclient_cmd = ['dhclient', '--no-pid', '-d', '-1', vif_name]
+ proc = net_helpers.RootHelperProcess(
+ cmd=dhclient_cmd, namespace=network.namespace)
+ self.addCleanup(proc.wait)
+ self.addCleanup(proc.kill)
+
+
+class DHCPAgentOVSTestCase(DHCPAgentOVSTestFramework):
+
+ def test_create_subnet_with_dhcp(self):
+ dhcp_enabled = True
+ for version in [4, 6]:
+ network = self.network_dict_for_dhcp(
+ dhcp_enabled, ip_version=version)
+ self.configure_dhcp_for_network(network=network,
+ dhcp_enabled=dhcp_enabled)
+ self.assert_dhcp_resources(network, dhcp_enabled)
+
+ def test_good_address_allocation(self):
+ network, port = self._get_network_port_for_allocation_test()
+ network.ports.append(port)
+ self.configure_dhcp_for_network(network=network)
+ self._plug_port_for_dhcp_request(network, port)
+ self.assert_good_allocation_for_port(network, port)
+
+ def test_bad_address_allocation(self):
+ network, port = self._get_network_port_for_allocation_test()
+ network.ports.append(port)
+ self.configure_dhcp_for_network(network=network)
+ bad_mac_address = netaddr.EUI(self._TENANT_PORT_MAC_ADDRESS.value + 1)
+ bad_mac_address.dialect = netaddr.mac_unix
+ port.mac_address = str(bad_mac_address)
+ self._plug_port_for_dhcp_request(network, port)
+ self.assert_bad_allocation_for_port(network, port)
Code Review / openstack-build / neutron-build.git / commitdiff