OpenStack Networking (Neutron)
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# Copyright (c) 2015 OpenStack Foundation
#
# 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 mock
from neutron_lib.api.definitions import portbindings
from neutron_lib import constants as lib_constants
from oslo_config import cfg
from oslo_log import log
from oslo_utils import uuidutils
from neutron.agent.l3 import agent as l3_agent
from neutron.agent.l3 import dvr_edge_ha_router as dvr_edge_ha_rtr
from neutron.agent.l3 import dvr_edge_router as dvr_edge_rtr
from neutron.agent.l3 import dvr_local_router as dvr_router
from neutron.agent.l3 import link_local_allocator as lla
from neutron.agent.l3 import router_info
from neutron.agent.linux import interface
from neutron.agent.linux import ip_lib
from neutron.common import constants as n_const
from neutron.common import utils as common_utils
from neutron.conf.agent import common as agent_config
from neutron.conf.agent.l3 import config as l3_config
from neutron.conf.agent.l3 import ha as ha_conf
from neutron.conf import common as base_config
from neutron.tests import base
from neutron.tests.common import l3_test_common
_uuid = uuidutils.generate_uuid
FIP_PRI = 32768
HOSTNAME = 'myhost'
class TestDvrRouterOperations(base.BaseTestCase):
def setUp(self):
super(TestDvrRouterOperations, self).setUp()
mock.patch('eventlet.spawn').start()
self.conf = agent_config.setup_conf()
self.conf.register_opts(base_config.core_opts)
log.register_options(self.conf)
self.conf.register_opts(agent_config.AGENT_STATE_OPTS, 'AGENT')
l3_config.register_l3_agent_config_opts(l3_config.OPTS, self.conf)
ha_conf.register_l3_agent_ha_opts(self.conf)
agent_config.register_interface_driver_opts_helper(self.conf)
agent_config.register_process_monitor_opts(self.conf)
agent_config.register_interface_opts(self.conf)
agent_config.register_external_process_opts(self.conf)
self.conf.set_override('interface_driver',
'neutron.agent.linux.interface.NullDriver')
self.conf.set_override('state_path', cfg.CONF.state_path)
self.device_exists_p = mock.patch(
'neutron.agent.linux.ip_lib.device_exists')
self.device_exists = self.device_exists_p.start()
self.ensure_dir = mock.patch(
'oslo_utils.fileutils.ensure_tree').start()
mock.patch('neutron.agent.linux.keepalived.KeepalivedManager'
'.get_full_config_file_path').start()
self.utils_exec_p = mock.patch(
'neutron.agent.linux.utils.execute')
self.utils_exec = self.utils_exec_p.start()
self.utils_replace_file_p = mock.patch(
'neutron_lib.utils.file.replace_file')
self.utils_replace_file = self.utils_replace_file_p.start()
self.external_process_p = mock.patch(
'neutron.agent.linux.external_process.ProcessManager')
self.external_process = self.external_process_p.start()
self.process_monitor = mock.patch(
'neutron.agent.linux.external_process.ProcessMonitor').start()
self.send_adv_notif_p = mock.patch(
'neutron.agent.linux.ip_lib.send_ip_addr_adv_notif')
self.send_adv_notif = self.send_adv_notif_p.start()
self.dvr_cls_p = mock.patch('neutron.agent.linux.interface.NullDriver')
driver_cls = self.dvr_cls_p.start()
self.mock_driver = mock.MagicMock()
self.mock_driver.DEV_NAME_LEN = (
interface.LinuxInterfaceDriver.DEV_NAME_LEN)
driver_cls.return_value = self.mock_driver
self.ip_cls_p = mock.patch('neutron.agent.linux.ip_lib.IPWrapper')
ip_cls = self.ip_cls_p.start()
self.mock_ip = mock.MagicMock()
ip_cls.return_value = self.mock_ip
self.mock_delete_ip_rule = mock.patch.object(ip_lib,
'delete_ip_rule').start()
ip_dev = mock.patch('neutron.agent.linux.ip_lib.IPDevice').start()
self.mock_ip_dev = mock.MagicMock()
ip_dev.return_value = self.mock_ip_dev
self.l3pluginApi_cls_p = mock.patch(
'neutron.agent.l3.agent.L3PluginApi')
l3pluginApi_cls = self.l3pluginApi_cls_p.start()
self.plugin_api = mock.MagicMock()
l3pluginApi_cls.return_value = self.plugin_api
self.looping_call_p = mock.patch(
'oslo_service.loopingcall.FixedIntervalLoopingCall')
self.looping_call_p.start()
subnet_id_1 = _uuid()
subnet_id_2 = _uuid()
self.snat_ports = [{'subnets': [{'cidr': '152.2.0.0/16',
'gateway_ip': '152.2.0.1',
'id': subnet_id_1}],
'network_id': _uuid(),
'device_owner':
lib_constants.DEVICE_OWNER_ROUTER_SNAT,
'mac_address': 'fa:16:3e:80:8d:80',
'fixed_ips': [{'subnet_id': subnet_id_1,
'ip_address': '152.2.0.13',
'prefixlen': 16}],
'id': _uuid(), 'device_id': _uuid()},
{'subnets': [{'cidr': '152.10.0.0/16',
'gateway_ip': '152.10.0.1',
'id': subnet_id_2}],
'network_id': _uuid(),
'device_owner':
lib_constants.DEVICE_OWNER_ROUTER_SNAT,
'mac_address': 'fa:16:3e:80:8d:80',
'fixed_ips': [{'subnet_id': subnet_id_2,
'ip_address': '152.10.0.13',
'prefixlen': 16}],
'id': _uuid(), 'device_id': _uuid()}]
self.ri_kwargs = {'agent_conf': self.conf,
'interface_driver': self.mock_driver}
def _create_router(self, router=None, **kwargs):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self.router_id = _uuid()
if not router:
router = mock.MagicMock()
kwargs['agent'] = agent
kwargs['router_id'] = self.router_id
kwargs['router'] = router
kwargs['agent_conf'] = self.conf
kwargs['interface_driver'] = mock.Mock()
with mock.patch.object(dvr_router.DvrLocalRouter,
'load_used_fip_information'):
return dvr_router.DvrLocalRouter(HOSTNAME, **kwargs)
def _set_ri_kwargs(self, agent, router_id, router):
self.ri_kwargs['agent'] = agent
self.ri_kwargs['router_id'] = router_id
self.ri_kwargs['router'] = router
def test_gw_ns_name(self):
ri = self._create_router()
self.assertEqual(ri.ns_name, ri.get_gw_ns_name())
def test_create_dvr_fip_interfaces_update(self):
ri = self._create_router()
fip_agent_port = {'subnets': []}
ri.get_floating_agent_gw_interface = mock.Mock(
return_value=fip_agent_port)
ri.get_floating_ips = mock.Mock(return_value=True)
ri.fip_ns = mock.Mock()
ri.fip_ns.subscribe.return_value = False
ri.rtr_fip_connect = True
ex_gw_port = {'network_id': 'fake_net_id'}
ri.create_dvr_external_gateway_on_agent(ex_gw_port)
ri.fip_ns.create_or_update_gateway_port.assert_called_once_with(
fip_agent_port)
def test_create_dvr_fip_interfaces_with_matching_address_scope(self):
self._setup_create_dvr_fip_interfaces_for_setting_routing_rules(
address_scopes_match=True)
def test_create_dvr_fip_interfaces_with_address_scope_mismatch(self):
self._setup_create_dvr_fip_interfaces_for_setting_routing_rules()
def _setup_create_dvr_fip_interfaces_for_setting_routing_rules(
self, address_scopes_match=False):
ri = self._create_router()
ri.get_floating_agent_gw_interface = mock.Mock()
ri.fip_ns = mock.Mock()
ri._add_interface_routing_rule_to_router_ns = mock.Mock()
ri._add_interface_route_to_fip_ns = mock.Mock()
ri.fip_ns._create_rtr_2_fip_link = mock.Mock()
ri.internal_ports = ['moke_port_1', 'moke_port_2']
if address_scopes_match:
ri._check_if_address_scopes_match = mock.Mock(
return_value=True)
else:
ri._check_if_address_scopes_match = mock.Mock(
return_value=False)
ri.rtr_fip_connect = False
ex_gw_port = {'network_id': 'fake_net_id'}
ri.create_dvr_external_gateway_on_agent(ex_gw_port)
ri._check_rtr_2_fip_connect = mock.Mock()
ri.connect_rtr_2_fip()
self.assertTrue(ri._check_if_address_scopes_match.called)
if address_scopes_match:
self.assertTrue(
ri.fip_ns.create_rtr_2_fip_link.called)
self.assertTrue(
ri._add_interface_routing_rule_to_router_ns.called)
self.assertTrue(
ri._add_interface_route_to_fip_ns.called)
else:
self.assertFalse(
ri._add_interface_routing_rule_to_router_ns.called)
self.assertFalse(
ri._add_interface_route_to_fip_ns.called)
self.assertTrue(
ri.fip_ns.create_rtr_2_fip_link.called)
def test_load_used_fip_information(self):
router = mock.MagicMock()
with mock.patch.object(dvr_router.DvrLocalRouter,
'get_floating_ips') as mock_get_floating_ips:
with mock.patch.object(dvr_router.DvrLocalRouter,
'get_ex_gw_port') as mock_ext_port:
mock_ext_port.return_value = {'network_id': _uuid()}
fip = {'id': _uuid(),
'host': HOSTNAME,
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1',
'floating_network_id': _uuid(),
'port_id': _uuid()}
fip_ns = mock.MagicMock()
fip_ns.lookup_rule_priority.return_value = 1234
mock_get_floating_ips.return_value = [fip]
mock_agent = mock.MagicMock()
mock_agent.get_fip_ns.return_value = fip_ns
kwargs = {'agent': mock_agent,
'router_id': _uuid(),
'router': mock.Mock(),
'agent_conf': self.conf,
'interface_driver': mock.Mock()}
router = dvr_router.DvrLocalRouter(HOSTNAME, **kwargs)
self.assertEqual({'15.1.2.3': ('192.168.0.1', 1234)},
router.floating_ips_dict)
def test_get_floating_ips_dvr(self):
router = mock.MagicMock()
router.get.return_value = [{'host': HOSTNAME},
{'host': mock.sentinel.otherhost}]
ri = self._create_router(router)
fips = ri.get_floating_ips()
self.assertEqual(
[{'host': HOSTNAME}, {'host': mock.sentinel.otherhost}], fips)
def test_floating_forward_rules_no_fip_ns(self):
router = mock.MagicMock()
router.get.return_value = [{'host': HOSTNAME},
{'host': mock.sentinel.otherhost}]
fip = {'id': _uuid()}
ri = self._create_router(router)
self.assertFalse(ri.floating_forward_rules(fip))
def test_floating_forward_rules(self):
router = mock.MagicMock()
router.get.return_value = [{'host': HOSTNAME},
{'host': mock.sentinel.otherhost}]
ri = self._create_router(router)
floating_ip = '15.1.2.3'
rtr_2_fip_name = 'fake_router'
fixed_ip = '192.168.0.1'
fip = {'id': _uuid(),
'fixed_ip_address': '192.168.0.1',
'floating_ip_address': '15.1.2.3'}
instance = mock.Mock()
instance.get_rtr_ext_device_name = mock.Mock(
return_value=rtr_2_fip_name)
ri.fip_ns = instance
dnat_from_floatingip_to_fixedip = (
'PREROUTING', '-d %s/32 -i %s -j DNAT --to-destination %s' % (
floating_ip, rtr_2_fip_name, fixed_ip))
to_source = '-s %s/32 -j SNAT --to-source %s' % (fixed_ip, floating_ip)
if ri.iptables_manager.random_fully:
to_source += ' --random-fully'
snat_from_fixedip_to_floatingip = ('float-snat', to_source)
actual = ri.floating_forward_rules(fip)
expected = [dnat_from_floatingip_to_fixedip,
snat_from_fixedip_to_floatingip]
self.assertEqual(expected, actual)
def test_floating_mangle_rules_no_fip_ns(self):
router = mock.MagicMock()
router.get.return_value = [{'host': HOSTNAME},
{'host': mock.sentinel.otherhost}]
ri = self._create_router(router)
floating_ip = mock.Mock()
fixed_ip = mock.Mock()
internal_mark = mock.Mock()
self.assertFalse(ri.floating_mangle_rules(floating_ip, fixed_ip,
internal_mark))
def test_floating_mangle_rules(self):
router = mock.MagicMock()
router.get.return_value = [{'host': HOSTNAME},
{'host': mock.sentinel.otherhost}]
ri = self._create_router(router)
floating_ip = '15.1.2.3'
fixed_ip = '192.168.0.1'
internal_mark = 'fake_mark'
rtr_2_fip_name = 'fake_router'
instance = mock.Mock()
instance.get_rtr_ext_device_name = mock.Mock(
return_value=rtr_2_fip_name)
ri.fip_ns = instance
mark_traffic_to_floating_ip = (
'floatingip', '-d %s/32 -i %s -j MARK --set-xmark %s' % (
floating_ip, rtr_2_fip_name, internal_mark))
mark_traffic_from_fixed_ip = (
'FORWARD', '-s %s/32 -j $float-snat' % fixed_ip)
actual = ri.floating_mangle_rules(floating_ip, fixed_ip, internal_mark)
expected = [mark_traffic_to_floating_ip, mark_traffic_from_fixed_ip]
self.assertEqual(expected, actual)
@mock.patch.object(ip_lib, 'send_ip_addr_adv_notif')
@mock.patch.object(ip_lib, 'IPDevice')
@mock.patch.object(ip_lib, 'add_ip_rule')
def test_floating_ip_added_dist(self, mock_add_ip_rule, mIPDevice,
mock_adv_notif):
router = mock.MagicMock()
ri = self._create_router(router)
ri.ex_gw_port = ri.router['gw_port']
ext_net_id = _uuid()
subnet_id = _uuid()
agent_gw_port = {'fixed_ips': [{'ip_address': '20.0.0.30',
'prefixlen': 24,
'subnet_id': subnet_id}],
'subnets': [{'id': subnet_id,
'cidr': '20.0.0.0/24',
'gateway_ip': '20.0.0.1'}],
'id': _uuid(),
'network_id': ext_net_id,
'mac_address': 'ca:fe:de:ad:be:ef'}
fip = {'id': _uuid(),
'host': HOSTNAME,
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1',
'floating_network_id': ext_net_id,
'port_id': _uuid()}
ri.fip_ns = mock.Mock()
ri.fip_ns.agent_gateway_port = agent_gw_port
ri.create_dvr_external_gateway_on_agent(ri.ex_gw_port)
ri._check_rtr_2_fip_connect = mock.Mock()
ri.connect_rtr_2_fip()
self.assertTrue(ri.rtr_fip_connect)
ri.fip_ns.allocate_rule_priority.return_value = FIP_PRI
subnet = lla.LinkLocalAddressPair('169.254.30.42/31')
ri.rtr_fip_subnet = subnet
ri.fip_ns.local_subnets = mock.Mock()
ri.fip_ns.local_subnets.allocate.return_value = subnet
ip_cidr = common_utils.ip_to_cidr(fip['floating_ip_address'])
ri.floating_ip_added_dist(fip, ip_cidr)
mock_add_ip_rule.assert_called_with(
namespace=ri.router_namespace.name, ip='192.168.0.1',
table=16, priority=FIP_PRI)
ri.fip_ns.local_subnets.allocate.assert_not_called()
# Validate that fip_ns.local_subnets is called when
# ri.rtr_fip_subnet is None
ri.rtr_fip_subnet = None
ri.floating_ip_added_dist(fip, ip_cidr)
mock_add_ip_rule.assert_called_with(
namespace=ri.router_namespace.name, ip='192.168.0.1',
table=16, priority=FIP_PRI)
ri.fip_ns.local_subnets.allocate.assert_called_once_with(ri.router_id)
# TODO(mrsmith): add more asserts
@mock.patch.object(ip_lib, 'IPWrapper')
@mock.patch.object(ip_lib, 'IPDevice')
def test_floating_ip_removed_dist(self, mIPDevice, mIPWrapper):
router = mock.MagicMock()
ri = self._create_router(router)
ri.ex_gw_port = ri.router['gw_port']
subnet_id = _uuid()
fixed_ip = '20.0.0.30'
agent_gw_port = {'fixed_ips': [{'ip_address': fixed_ip,
'prefixlen': 24,
'subnet_id': subnet_id}],
'subnets': [{'id': subnet_id,
'cidr': '20.0.0.0/24',
'gateway_ip': '20.0.0.1'}],
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef'}
fip_cidr = '11.22.33.44/24'
ri.fip_ns = mock.Mock()
ri.fip_ns.get_name.return_value = 'fip_ns_name'
ri.floating_ips_dict['11.22.33.44'] = (fixed_ip, FIP_PRI)
ri.fip_2_rtr = '11.22.33.42'
ri.rtr_2_fip = '11.22.33.40'
ri.fip_ns.agent_gateway_port = agent_gw_port
s = lla.LinkLocalAddressPair('169.254.30.42/31')
ri.rtr_fip_subnet = s
ri.fip_ns.local_subnets = mock.Mock()
ri.floating_ip_removed_dist(fip_cidr)
self.mock_delete_ip_rule.assert_called_with(
ri.router_namespace.name, ip=fixed_ip, table=16, priority=FIP_PRI)
mIPDevice().route.delete_route.assert_called_with(fip_cidr, str(s.ip))
ri.fip_ns.local_subnets.allocate.assert_not_called()
@mock.patch.object(ip_lib, 'add_ip_rule')
def test_floating_ip_moved_dist(self, mock_add_ip_rule):
router = mock.MagicMock()
ri = self._create_router(router)
floating_ip_address = '15.1.2.3'
fixed_ip = '192.168.0.1'
fip = {'floating_ip_address': floating_ip_address,
'fixed_ip_address': fixed_ip}
ri.floating_ips_dict['15.1.2.3'] = (fixed_ip, FIP_PRI)
ri.fip_ns = mock.Mock()
ri.fip_ns.allocate_rule_priority.return_value = FIP_PRI
ri.floating_ip_moved_dist(fip)
self.mock_delete_ip_rule.assert_called_once_with(
ri.router_namespace.name, ip=fixed_ip, table=16, priority=FIP_PRI)
ri.fip_ns.deallocate_rule_priority.assert_called_once_with(
floating_ip_address)
ri.fip_ns.allocate_rule_priority.assert_called_once_with(
floating_ip_address)
mock_add_ip_rule.assert_called_with(
namespace=ri.router_namespace.name, ip=fixed_ip,
table=16, priority=FIP_PRI)
def _test_add_floating_ip(self, ri, fip, is_failure=False):
if not is_failure:
ri.floating_ip_added_dist = mock.Mock(
return_value=lib_constants.FLOATINGIP_STATUS_ACTIVE)
else:
ri.floating_ip_added_dist = mock.Mock(
return_value=lib_constants.FLOATINGIP_STATUS_ERROR)
result = ri.add_floating_ip(fip,
mock.sentinel.interface_name,
mock.sentinel.device)
ri.floating_ip_added_dist.assert_called_once_with(
fip, mock.ANY)
return result
def test_add_floating_ip(self):
ri = self._create_router(mock.MagicMock())
ip = '15.1.2.3'
fip = {'floating_ip_address': ip}
result = self._test_add_floating_ip(ri, fip)
ri.floating_ip_added_dist.assert_called_once_with(fip, ip + '/32')
self.assertEqual(lib_constants.FLOATINGIP_STATUS_ACTIVE, result)
def test_add_floating_ip_failure(self):
ri = self._create_router(mock.MagicMock())
ip = '15.1.2.3'
fip = {'floating_ip_address': ip}
result = self._test_add_floating_ip(ri, fip, True)
ri.floating_ip_added_dist.assert_called_once_with(fip, ip + '/32')
self.assertEqual(lib_constants.FLOATINGIP_STATUS_ERROR, result)
@mock.patch.object(router_info.RouterInfo, 'remove_floating_ip')
def test_remove_floating_ip(self, super_remove_floating_ip):
ri = self._create_router(mock.MagicMock())
ri.floating_ip_removed_dist = mock.Mock()
ri.remove_floating_ip(mock.sentinel.device, mock.sentinel.ip_cidr)
self.assertFalse(super_remove_floating_ip.called)
ri.floating_ip_removed_dist.assert_called_once_with(
mock.sentinel.ip_cidr)
def test__get_internal_port(self):
ri = self._create_router()
port = {'fixed_ips': [{'subnet_id': mock.sentinel.subnet_id}]}
router_ports = [port]
ri.router.get.return_value = router_ports
self.assertEqual(port, ri._get_internal_port(mock.sentinel.subnet_id))
def test__get_internal_port_not_found(self):
ri = self._create_router()
port = {'fixed_ips': [{'subnet_id': mock.sentinel.subnet_id}]}
router_ports = [port]
ri.router.get.return_value = router_ports
self.assertIsNone(ri._get_internal_port(mock.sentinel.subnet_id2))
def test__get_snat_idx_ipv4(self):
ip_cidr = '101.12.13.00/24'
ri = self._create_router(mock.MagicMock())
snat_idx = ri._get_snat_idx(ip_cidr)
# 0x650C0D00 is numerical value of 101.12.13.00
self.assertEqual(0x650C0D00, snat_idx)
def test__get_snat_idx_ipv6(self):
ip_cidr = '2620:0:a03:e100::/64'
ri = self._create_router(mock.MagicMock())
snat_idx = ri._get_snat_idx(ip_cidr)
# 0x3D345705 is 30 bit xor folded crc32 of the ip_cidr
self.assertEqual(0x3D345705, snat_idx)
def test__get_snat_idx_ipv6_below_32768(self):
ip_cidr = 'd488::/30'
# crc32 of this ip_cidr is 0x1BD7
ri = self._create_router(mock.MagicMock())
snat_idx = ri._get_snat_idx(ip_cidr)
# 0x1BD7 + 0x3FFFFFFF = 0x40001BD6
self.assertEqual(0x40001BD6, snat_idx)
def test__set_subnet_arp_info(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = l3_test_common.prepare_router_data(num_internal_ports=2)
router['distributed'] = True
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_router.DvrLocalRouter(HOSTNAME, **self.ri_kwargs)
ports = ri.router.get(lib_constants.INTERFACE_KEY, [])
subnet_id = l3_test_common.get_subnet_id(ports[0])
test_ports = [{'mac_address': '00:11:22:33:44:55',
'device_owner': lib_constants.DEVICE_OWNER_DHCP,
'fixed_ips': [{'ip_address': '1.2.3.4',
'prefixlen': 24,
'subnet_id': subnet_id}],
'allowed_address_pairs': [
{'ip_address': '10.20.30.40',
'mac_address': '00:11:22:33:44:55'}]},
{'mac_address': '11:22:33:44:55:66',
'device_owner': lib_constants.DEVICE_OWNER_LOADBALANCER,
'fixed_ips': [{'ip_address': '1.2.3.5',
'prefixlen': 24,
'subnet_id': subnet_id}]},
{'mac_address': '22:33:44:55:66:77',
'device_owner':
lib_constants.DEVICE_OWNER_LOADBALANCERV2,
'fixed_ips': [{'ip_address': '1.2.3.6',
'prefixlen': 24,
'subnet_id': subnet_id}]}]
self.plugin_api.get_ports_by_subnet.return_value = test_ports
# Test basic case
ports[0]['subnets'] = [{'id': subnet_id,
'cidr': '1.2.3.0/24'}]
with mock.patch.object(ri,
'_process_arp_cache_for_internal_port') as parp:
ri._set_subnet_arp_info(subnet_id)
self.assertEqual(1, parp.call_count)
self.mock_ip_dev.neigh.add.assert_has_calls([
mock.call('1.2.3.4', '00:11:22:33:44:55'),
mock.call('10.20.30.40', '00:11:22:33:44:55')])
# Test negative case
router['distributed'] = False
ri._set_subnet_arp_info(subnet_id)
self.mock_ip_dev.neigh.add.never_called()
def test_add_arp_entry(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = l3_test_common.prepare_router_data(num_internal_ports=2)
router['distributed'] = True
subnet_id = l3_test_common.get_subnet_id(
router[lib_constants.INTERFACE_KEY][0])
arp_table = {'ip_address': '1.7.23.11',
'mac_address': '00:11:22:33:44:55',
'subnet_id': subnet_id}
payload = {'arp_table': arp_table, 'router_id': router['id']}
agent._router_added(router['id'], router)
agent.add_arp_entry(None, payload)
agent.router_deleted(None, router['id'])
self.mock_ip_dev.neigh.add.assert_called_once_with(
'1.7.23.11', '00:11:22:33:44:55')
def test_add_arp_entry_no_routerinfo(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = l3_test_common.prepare_router_data(num_internal_ports=2)
subnet_id = l3_test_common.get_subnet_id(
router[lib_constants.INTERFACE_KEY][0])
arp_table = {'ip_address': '1.7.23.11',
'mac_address': '00:11:22:33:44:55',
'subnet_id': subnet_id}
payload = {'arp_table': arp_table, 'router_id': router['id']}
agent.add_arp_entry(None, payload)
def test__update_arp_entry_with_no_subnet(self):
self._set_ri_kwargs(mock.sentinel.agent,
'foo_router_id',
{'distributed': True, 'gw_port_host': HOSTNAME})
ri = dvr_router.DvrLocalRouter(HOSTNAME, **self.ri_kwargs)
ri.get_internal_device_name = mock.Mock()
ri._update_arp_entry(mock.ANY, mock.ANY, 'foo_subnet_id', 'add')
self.assertFalse(ri.get_internal_device_name.call_count)
def _setup_test_for_arp_entry_cache(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = l3_test_common.prepare_router_data(num_internal_ports=2)
router['distributed'] = True
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_router.DvrLocalRouter(HOSTNAME, **self.ri_kwargs)
subnet_id = l3_test_common.get_subnet_id(
ri.router[lib_constants.INTERFACE_KEY][0])
return ri, subnet_id
def test__update_arp_entry_calls_arp_cache_with_no_device(self):
ri, subnet_id = self._setup_test_for_arp_entry_cache()
state = True
with mock.patch('neutron.agent.linux.ip_lib.IPDevice') as rtrdev,\
mock.patch.object(ri, '_cache_arp_entry') as arp_cache:
rtrdev.return_value.exists.return_value = False
state = ri._update_arp_entry(
mock.ANY, mock.ANY, subnet_id, 'add')
self.assertFalse(state)
self.assertTrue(arp_cache.called)
arp_cache.assert_called_once_with(mock.ANY, mock.ANY,
subnet_id, 'add')
self.assertFalse(rtrdev.neigh.add.called)
def test__process_arp_cache_for_internal_port(self):
ri, subnet_id = self._setup_test_for_arp_entry_cache()
ri._cache_arp_entry('1.7.23.11', '00:11:22:33:44:55',
subnet_id, 'add')
self.assertEqual(1, len(ri._pending_arp_set))
with mock.patch.object(ri, '_update_arp_entry') as update_arp:
update_arp.return_value = True
ri._process_arp_cache_for_internal_port(subnet_id)
self.assertEqual(0, len(ri._pending_arp_set))
def test__delete_arp_cache_for_internal_port(self):
ri, subnet_id = self._setup_test_for_arp_entry_cache()
ri._cache_arp_entry('1.7.23.11', '00:11:22:33:44:55',
subnet_id, 'add')
self.assertEqual(1, len(ri._pending_arp_set))
ri._delete_arp_cache_for_internal_port(subnet_id)
self.assertEqual(0, len(ri._pending_arp_set))
def test_del_arp_entry(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
router = l3_test_common.prepare_router_data(num_internal_ports=2)
router['distributed'] = True
subnet_id = l3_test_common.get_subnet_id(
router[lib_constants.INTERFACE_KEY][0])
arp_table = {'ip_address': '1.5.25.15',
'mac_address': '00:44:33:22:11:55',
'subnet_id': subnet_id}
payload = {'arp_table': arp_table, 'router_id': router['id']}
agent._router_added(router['id'], router)
# first add the entry
agent.add_arp_entry(None, payload)
# now delete it
agent.del_arp_entry(None, payload)
self.mock_ip_dev.neigh.delete.assert_called_once_with(
'1.5.25.15', '00:44:33:22:11:55')
agent.router_deleted(None, router['id'])
def test_get_floating_agent_gw_interfaces(self):
fake_network_id = _uuid()
subnet_id = _uuid()
agent_gateway_port = (
[{'fixed_ips': [{'ip_address': '20.0.0.30',
'prefixlen': 24,
'subnet_id': subnet_id}],
'subnets': [{'id': subnet_id,
'cidr': '20.0.0.0/24',
'gateway_ip': '20.0.0.1'}],
'id': _uuid(),
portbindings.HOST_ID: 'myhost',
'device_owner': lib_constants.DEVICE_OWNER_AGENT_GW,
'network_id': fake_network_id,
'mac_address': 'ca:fe:de:ad:be:ef'}]
)
router = l3_test_common.prepare_router_data(enable_snat=True)
router[n_const.FLOATINGIP_AGENT_INTF_KEY] = agent_gateway_port
router['distributed'] = True
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_router.DvrLocalRouter(HOSTNAME, **self.ri_kwargs)
self.assertEqual(
agent_gateway_port[0],
ri.get_floating_agent_gw_interface(fake_network_id))
def test_process_router_dist_floating_ip_add(self):
fake_floatingips = {'floatingips': [
{'id': _uuid(),
'host': HOSTNAME,
'floating_ip_address': '15.1.2.3',
'fixed_ip_address': '192.168.0.1',
'floating_network_id': mock.sentinel.ext_net_id,
'port_id': _uuid()},
{'id': _uuid(),
'host': 'some-other-host',
'floating_ip_address': '15.1.2.4',
'fixed_ip_address': '192.168.0.10',
'floating_network_id': mock.sentinel.ext_net_id,
'port_id': _uuid()}]}
router = l3_test_common.prepare_router_data(enable_snat=True)
router[lib_constants.FLOATINGIP_KEY] = fake_floatingips['floatingips']
router['distributed'] = True
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_router.DvrLocalRouter(HOSTNAME, **self.ri_kwargs)
ri.iptables_manager.ipv4['nat'] = mock.MagicMock()
fip_ns = agent.get_fip_ns(mock.sentinel.ext_net_id)
subnet_id = _uuid()
fip_ns.agent_gateway_port = (
{'fixed_ips': [{'ip_address': '20.0.0.30',
'subnet_id': subnet_id}],
'subnets': [{'id': subnet_id,
'cidr': '20.0.0.0/24',
'gateway_ip': '20.0.0.1'}],
'id': _uuid(),
'network_id': _uuid(),
'mac_address': 'ca:fe:de:ad:be:ef'}
)
def _test_ext_gw_updated_dvr_agent_mode(self, host,
agent_mode, expected_call_count):
router = l3_test_common.prepare_router_data(num_internal_ports=2)
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_router.DvrLocalRouter(HOSTNAME, **self.ri_kwargs)
interface_name, ex_gw_port = l3_test_common.prepare_ext_gw_test(self,
ri)
ri._external_gateway_added = mock.Mock()
# test agent mode = dvr (compute node)
router['gw_port_host'] = host
agent.conf.agent_mode = agent_mode
ri.external_gateway_updated(ex_gw_port, interface_name)
# no gateway should be added on dvr node
self.assertEqual(expected_call_count,
ri._external_gateway_added.call_count)
def test_ext_gw_updated_dvr_agent_mode(self):
# no gateway should be added on dvr node
self._test_ext_gw_updated_dvr_agent_mode('any-foo', 'dvr', 0)
def test_ext_gw_updated_dvr_agent_mode_host(self):
# no gateway should be added on dvr node
self._test_ext_gw_updated_dvr_agent_mode(HOSTNAME,
'dvr', 0)
def test_external_gateway_removed_ext_gw_port_and_fip(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.conf.agent_mode = lib_constants.L3_AGENT_MODE_DVR_SNAT
router = l3_test_common.prepare_router_data(num_internal_ports=2)
router['gw_port_host'] = HOSTNAME
self.mock_driver.unplug.reset_mock()
external_net_id = router['gw_port']['network_id']
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_edge_rtr.DvrEdgeRouter(HOSTNAME, **self.ri_kwargs)
ri.remove_floating_ip = mock.Mock()
agent._fetch_external_net_id = mock.Mock(return_value=external_net_id)
ri.ex_gw_port = ri.router['gw_port']
del ri.router['gw_port']
ri.external_gateway_added(
ri.ex_gw_port,
ri.get_external_device_name(ri.ex_gw_port['id']))
ri.fip_ns = None
nat = ri.iptables_manager.ipv4['nat']
nat.clear_rules_by_tag = mock.Mock()
nat.add_rule = mock.Mock()
ri.fip_ns = agent.get_fip_ns(external_net_id)
subnet_id = _uuid()
ri.fip_ns.agent_gateway_port = {
'fixed_ips': [{
'ip_address': '20.0.0.30',
'prefixlen': 24,
'subnet_id': subnet_id
}],
'subnets': [{'id': subnet_id,
'cidr': '20.0.0.0/24',
'gateway_ip': '20.0.0.1'}],
'id': _uuid(),
'network_id': external_net_id,
'mac_address': 'ca:fe:de:ad:be:ef'}
vm_floating_ip = '19.4.4.2'
ri.floating_ips_dict[vm_floating_ip] = FIP_PRI
ri.rtr_fip_subnet = ri.fip_ns.local_subnets.allocate(ri.router_id)
_, fip_to_rtr = ri.rtr_fip_subnet.get_pair()
self.mock_ip.get_devices.return_value = [
l3_test_common.FakeDev(ri.fip_ns.get_ext_device_name(_uuid()))]
ri.get_router_cidrs = mock.Mock(
return_value={vm_floating_ip + '/32', '19.4.4.1/24'})
self.device_exists.return_value = True
ri.external_gateway_removed(
ri.ex_gw_port,
ri.get_external_device_name(ri.ex_gw_port['id']))
ri.remove_floating_ip.assert_called_once_with(self.mock_ip_dev,
'19.4.4.2/32')
def test_get_router_cidrs_no_fip_ns(self):
router = mock.MagicMock()
router.get.return_value = [{'host': HOSTNAME},
{'host': mock.sentinel.otherhost}]
ri = self._create_router(router)
device = mock.Mock()
self.assertFalse(ri.get_router_cidrs(device))
def test_get_router_cidrs_no_device_exists(self):
router = mock.MagicMock()
router.get.return_value = [{'host': HOSTNAME},
{'host': mock.sentinel.otherhost}]
ri = self._create_router(router)
fake_fip_ns = mock.Mock(return_value=True)
fake_fip_ns.get_name = mock.Mock(return_value=None)
fake_fip_ns.get_int_device_name = mock.Mock(return_value=None)
ri.fip_ns = fake_fip_ns
device = mock.Mock()
device.exists = mock.Mock(return_value=False)
with mock.patch.object(ip_lib, 'IPDevice', return_value=device):
self.assertFalse(ri.get_router_cidrs(device))
@mock.patch.object(router_info.RouterInfo, '_add_snat_rules')
@mock.patch.object(dvr_router.DvrLocalRouter, '_handle_router_snat_rules')
def test_handle_snat_rule_for_centralized_fip(
self, _add_snat_rules, _handle_router_snat_rules):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.conf.agent_mode = lib_constants.L3_AGENT_MODE_DVR_SNAT
self.mock_driver.unplug.reset_mock()
router = l3_test_common.prepare_router_data(enable_floating_ip=True)
router['gw_port_host'] = HOSTNAME
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_edge_rtr.DvrEdgeRouter(HOSTNAME, **self.ri_kwargs)
ri.snat_iptables_manager = mock.MagicMock()
ipv4_nat = ri.snat_iptables_manager.ipv4['nat']
interface_name, ex_gw_port = l3_test_common.prepare_ext_gw_test(self,
ri)
ri._handle_router_snat_rules(ex_gw_port, interface_name)
ipv4_nat.add_rule.assert_called_once_with('snat', '-j $float-snat')
@mock.patch.object(dvr_edge_rtr.DvrEdgeRouter,
'add_centralized_floatingip')
def test_add_centralized_floatingip_dvr_ha(
self,
super_add_centralized_floatingip):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.conf.agent_mode = lib_constants.L3_AGENT_MODE_DVR_SNAT
router = l3_test_common.prepare_router_data(
num_internal_ports=2, enable_ha=True)
router['gw_port_host'] = HOSTNAME
self.mock_driver.unplug.reset_mock()
self._set_ri_kwargs(agent, router['id'], router)
fip = {'id': _uuid()}
fip_cidr = '11.22.33.44/24'
ri = dvr_edge_ha_rtr.DvrEdgeHaRouter(HOSTNAME, [], **self.ri_kwargs)
ri.is_router_master = mock.Mock(return_value=False)
ri._add_vip = mock.Mock()
interface_name = ri.get_snat_external_device_interface_name(
ri.get_ex_gw_port())
ri.add_centralized_floatingip(fip, fip_cidr)
ri._add_vip.assert_called_once_with(fip_cidr, interface_name)
super_add_centralized_floatingip.assert_not_called()
router[lib_constants.HA_INTERFACE_KEY]['status'] = 'DOWN'
self._set_ri_kwargs(agent, router['id'], router)
ri_1 = dvr_edge_ha_rtr.DvrEdgeHaRouter(HOSTNAME, [], **self.ri_kwargs)
ri_1.is_router_master = mock.Mock(return_value=True)
ri_1._add_vip = mock.Mock()
interface_name = ri_1.get_snat_external_device_interface_name(
ri_1.get_ex_gw_port())
ri_1.add_centralized_floatingip(fip, fip_cidr)
ri_1._add_vip.assert_called_once_with(fip_cidr, interface_name)
super_add_centralized_floatingip.assert_not_called()
router[lib_constants.HA_INTERFACE_KEY]['status'] = 'ACTIVE'
self._set_ri_kwargs(agent, router['id'], router)
ri_2 = dvr_edge_ha_rtr.DvrEdgeHaRouter(HOSTNAME, [], **self.ri_kwargs)
ri_2.is_router_master = mock.Mock(return_value=True)
ri_2._add_vip = mock.Mock()
interface_name = ri_2.get_snat_external_device_interface_name(
ri_2.get_ex_gw_port())
ri_2.add_centralized_floatingip(fip, fip_cidr)
ri_2._add_vip.assert_called_once_with(fip_cidr, interface_name)
super_add_centralized_floatingip.assert_called_once_with(fip,
fip_cidr)
@mock.patch.object(dvr_edge_rtr.DvrEdgeRouter,
'remove_centralized_floatingip')
def test_remove_centralized_floatingip(self,
super_remove_centralized_floatingip):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.conf.agent_mode = lib_constants.L3_AGENT_MODE_DVR_SNAT
router = l3_test_common.prepare_router_data(num_internal_ports=2)
router['gw_port_host'] = HOSTNAME
self.mock_driver.unplug.reset_mock()
self._set_ri_kwargs(agent, router['id'], router)
fip_cidr = '11.22.33.44/24'
ri = dvr_edge_ha_rtr.DvrEdgeHaRouter(HOSTNAME, [], **self.ri_kwargs)
ri.is_router_master = mock.Mock(return_value=False)
ri._remove_vip = mock.Mock()
ri.remove_centralized_floatingip(fip_cidr)
ri._remove_vip.assert_called_once_with(fip_cidr)
super_remove_centralized_floatingip.assert_not_called()
ri1 = dvr_edge_ha_rtr.DvrEdgeHaRouter(HOSTNAME, [], **self.ri_kwargs)
ri1.is_router_master = mock.Mock(return_value=True)
ri1._remove_vip = mock.Mock()
ri1.remove_centralized_floatingip(fip_cidr)
ri1._remove_vip.assert_called_once_with(fip_cidr)
super_remove_centralized_floatingip.assert_called_once_with(fip_cidr)
def test_initialize_dvr_ha_router_snat_ns_once(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.conf.agent_mode = lib_constants.L3_AGENT_MODE_DVR_SNAT
router = l3_test_common.prepare_router_data(
num_internal_ports=2, enable_ha=True)
router['gw_port_host'] = HOSTNAME
router[lib_constants.HA_INTERFACE_KEY]['status'] = 'ACTIVE'
self.mock_driver.unplug.reset_mock()
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_edge_ha_rtr.DvrEdgeHaRouter(HOSTNAME, [], **self.ri_kwargs)
ri._ha_state_path = self.get_temp_file_path('router_ha_state')
ri._create_snat_namespace = mock.Mock()
ri.update_initial_state = mock.Mock()
ri._plug_external_gateway = mock.Mock()
ri.initialize(mock.Mock())
ri._create_dvr_gateway(mock.Mock(), mock.Mock())
ri._create_snat_namespace.assert_called_once_with()
def test_initialize_dvr_ha_router_reset_state(self):
agent = l3_agent.L3NATAgent(HOSTNAME, self.conf)
agent.conf.agent_mode = lib_constants.L3_AGENT_MODE_DVR_SNAT
router = l3_test_common.prepare_router_data(
num_internal_ports=2, enable_ha=True)
router['gw_port_host'] = HOSTNAME
router[lib_constants.HA_INTERFACE_KEY]['status'] = 'ACTIVE'
self.mock_driver.unplug.reset_mock()
self._set_ri_kwargs(agent, router['id'], router)
ri = dvr_edge_ha_rtr.DvrEdgeHaRouter(HOSTNAME, [], **self.ri_kwargs)
ri._ha_state_path = self.get_temp_file_path('router_ha_state')
with open(ri._ha_state_path, "w") as f:
f.write("master")
ri._create_snat_namespace = mock.Mock()
ri.update_initial_state = mock.Mock()
ri._plug_external_gateway = mock.Mock()
with mock.patch("neutron.agent.linux.keepalived."
"KeepalivedManager.check_processes",
return_value=False):
ri.initialize(mock.Mock())
with open(ri._ha_state_path, "r") as f:
state = f.readline()
self.assertEqual("backup", state)