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neutron/neutron/tests/functional/agent/test_l2_ovs_agent.py

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# Copyright (c) 2015 Red Hat, Inc.
# Copyright (c) 2015 SUSE Linux Products GmbH
# 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 time
import mock
from neutron_lib.callbacks import events
from neutron_lib.callbacks import registry
from neutron_lib.callbacks import resources
from neutron.common import utils
from neutron.plugins.ml2.drivers.openvswitch.agent.common import constants
from neutron.tests.common import net_helpers
from neutron.tests.functional.agent.l2 import base
class TestOVSAgent(base.OVSAgentTestFramework):
def test_port_creation_and_deletion(self):
self.setup_agent_and_ports(
port_dicts=self.create_test_ports())
self.wait_until_ports_state(self.ports, up=True)
for port in self.ports:
self.agent.int_br.delete_port(port['vif_name'])
self.wait_until_ports_state(self.ports, up=False)
def test_no_stale_flows_after_port_delete(self):
def find_drop_flow(ofport, flows):
for flow in flows.split("\n"):
if "in_port=%d" % ofport in flow and "actions=drop" in flow:
return True
return False
def num_ports_with_drop_flows(ofports, flows):
count = 0
for ofport in ofports:
if find_drop_flow(ofport, flows):
count = count + 1
return count
# setup
self.setup_agent_and_ports(
port_dicts=self.create_test_ports())
self.wait_until_ports_state(self.ports, up=True)
# call port_delete first
for port in self.ports:
self.agent.port_delete([], port_id=port['id'])
portnames = [port["vif_name"] for port in self.ports]
ofports = [port.ofport for port in self.agent.int_br.get_vif_ports()
if port.port_name in portnames]
#wait until ports are marked dead, with drop flow
utils.wait_until_true(
lambda: num_ports_with_drop_flows(
ofports,
self.agent.int_br.dump_flows(
constants.LOCAL_SWITCHING
)) == len(ofports))
#delete the ports on bridge
for port in self.ports:
self.agent.int_br.delete_port(port['vif_name'])
self.wait_until_ports_state(self.ports, up=False)
#verify no stale drop flows
self.assertEqual(0,
num_ports_with_drop_flows(
ofports,
self.agent.int_br.dump_flows(
constants.LOCAL_SWITCHING
)
))
def _check_datapath_type_netdev(self, expected, default=False):
if not default:
self.config.set_override('datapath_type',
expected,
"OVS")
agent = self.create_agent()
self.start_agent(agent)
for br_name in (getattr(self, br) for br in
('br_int', 'br_tun', 'br_phys')):
actual = self.ovs.db_get_val('Bridge', br_name, 'datapath_type')
self.assertEqual(expected, actual)
def test_datapath_type_change(self):
self._check_datapath_type_netdev('system')
self._check_datapath_type_netdev('netdev')
def test_datapath_type_netdev(self):
self._check_datapath_type_netdev(
constants.OVS_DATAPATH_NETDEV)
def test_datapath_type_system(self):
self._check_datapath_type_netdev(
constants.OVS_DATAPATH_SYSTEM)
def test_datapath_type_default(self):
self._check_datapath_type_netdev(
constants.OVS_DATAPATH_SYSTEM, default=True)
def test_resync_devices_set_up_after_exception(self):
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
trigger_resync=True)
self.wait_until_ports_state(self.ports, up=True)
def test_reprocess_port_when_ovs_restarts(self):
self.setup_agent_and_ports(
port_dicts=self.create_test_ports())
self.wait_until_ports_state(self.ports, up=True)
self.agent.check_ovs_status.return_value = constants.OVS_RESTARTED
# OVS restarted, the agent should reprocess all the ports
self.agent.plugin_rpc.update_device_list.reset_mock()
self.wait_until_ports_state(self.ports, up=True)
def test_resync_dev_up_after_failure(self):
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
failed_dev_up=True)
# in the RPC mock the first port fails and should
# be re-synced
expected_ports = self.ports + [self.ports[0]]
self.wait_until_ports_state(expected_ports, up=True)
def test_resync_dev_down_after_failure(self):
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
failed_dev_down=True)
self.wait_until_ports_state(self.ports, up=True)
for port in self.ports:
self.agent.int_br.delete_port(port['vif_name'])
# in the RPC mock the first port fails and should
# be re-synced
expected_ports = self.ports + [self.ports[0]]
self.wait_until_ports_state(expected_ports, up=False)
def test_ancillary_port_creation_and_deletion(self):
external_bridge = self.useFixture(
net_helpers.OVSBridgeFixture()).bridge
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
ancillary_bridge=external_bridge)
self.wait_until_ports_state(self.ports, up=True)
for port in self.ports:
external_bridge.delete_port(port['vif_name'])
self.wait_until_ports_state(self.ports, up=False)
def test_resync_ancillary_devices(self):
external_bridge = self.useFixture(
net_helpers.OVSBridgeFixture()).bridge
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
ancillary_bridge=external_bridge,
trigger_resync=True)
self.wait_until_ports_state(self.ports, up=True)
def test_resync_ancillary_dev_up_after_failure(self):
external_bridge = self.useFixture(
net_helpers.OVSBridgeFixture()).bridge
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
ancillary_bridge=external_bridge,
failed_dev_up=True)
# in the RPC mock the first port fails and should
# be re-synced
expected_ports = self.ports + [self.ports[0]]
self.wait_until_ports_state(expected_ports, up=True)
def test_resync_ancillary_dev_down_after_failure(self):
external_bridge = self.useFixture(
net_helpers.OVSBridgeFixture()).bridge
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
ancillary_bridge=external_bridge,
failed_dev_down=True)
self.wait_until_ports_state(self.ports, up=True)
for port in self.ports:
external_bridge.delete_port(port['vif_name'])
# in the RPC mock the first port fails and should
# be re-synced
expected_ports = self.ports + [self.ports[0]]
self.wait_until_ports_state(expected_ports, up=False)
def test_port_vlan_tags(self):
self.setup_agent_and_ports(
port_dicts=self.create_test_ports(),
trigger_resync=True)
self.wait_until_ports_state(self.ports, up=True)
self.assert_vlan_tags(self.ports, self.agent)
def _test_assert_bridges_ports_vxlan(self, local_ip=None):
agent = self.create_agent(local_ip=local_ip)
self.assertTrue(self.ovs.bridge_exists(self.br_int))
self.assertTrue(self.ovs.bridge_exists(self.br_tun))
self.assert_bridge_ports()
self.assert_patch_ports(agent)
def test_assert_bridges_ports_vxlan_ipv4(self):
self._test_assert_bridges_ports_vxlan()
def test_assert_bridges_ports_vxlan_ipv6(self):
self._test_assert_bridges_ports_vxlan(local_ip='2001:db8:100::1')
def test_assert_bridges_ports_no_tunnel(self):
self.create_agent(create_tunnels=False)
self.assertTrue(self.ovs.bridge_exists(self.br_int))
self.assertFalse(self.ovs.bridge_exists(self.br_tun))
def test_assert_pings_during_br_int_setup_not_lost(self):
self.setup_agent_and_ports(port_dicts=self.create_test_ports(),
create_tunnels=False)
self.wait_until_ports_state(self.ports, up=True)
ips = [port['fixed_ips'][0]['ip_address'] for port in self.ports]
with net_helpers.async_ping(self.namespace, ips) as done:
while not done():
self.agent.setup_integration_br()
time.sleep(0.25)
def test_assert_br_int_patch_port_ofports_dont_change(self):
# When the integration bridge is setup, it should reuse the existing
# patch ports between br-int and br-tun.
self.setup_agent_and_ports(port_dicts=[], create_tunnels=True)
patch_int_ofport_before = self.agent.patch_int_ofport
patch_tun_ofport_before = self.agent.patch_tun_ofport
self.setup_agent_and_ports(port_dicts=[], create_tunnels=True)
self.assertEqual(patch_int_ofport_before, self.agent.patch_int_ofport)
self.assertEqual(patch_tun_ofport_before, self.agent.patch_tun_ofport)
def test_assert_br_phys_patch_port_ofports_dont_change(self):
# When the integration bridge is setup, it should reuse the existing
# patch ports between br-int and br-phys.
self.setup_agent_and_ports(port_dicts=[])
patch_int_ofport_before = self.agent.int_ofports['physnet']
patch_phys_ofport_before = self.agent.phys_ofports['physnet']
self.setup_agent_and_ports(port_dicts=[])
self.assertEqual(patch_int_ofport_before,
self.agent.int_ofports['physnet'])
self.assertEqual(patch_phys_ofport_before,
self.agent.phys_ofports['physnet'])
def test_assert_pings_during_br_phys_setup_not_lost_in_vlan_to_flat(self):
provider_net = self._create_test_network_dict()
provider_net['network_type'] = 'flat'
self._test_assert_pings_during_br_phys_setup_not_lost(provider_net)
def test_assert_pings_during_br_phys_setup_not_lost_in_vlan_to_vlan(self):
provider_net = self._create_test_network_dict()
provider_net['network_type'] = 'vlan'
provider_net['segmentation_id'] = 876
self._test_assert_pings_during_br_phys_setup_not_lost(provider_net)
def _test_assert_pings_during_br_phys_setup_not_lost(self, provider_net):
# Separate namespace is needed when pinging from one port to another,
# otherwise Linux ping uses loopback instead for sending and receiving
# ping, hence ignoring flow setup.
ns_phys = self.useFixture(net_helpers.NamespaceFixture()).name
ports = self.create_test_ports(amount=2)
port_int = ports[0]
port_phys = ports[1]
ip_int = port_int['fixed_ips'][0]['ip_address']
ip_phys = port_phys['fixed_ips'][0]['ip_address']
self.setup_agent_and_ports(port_dicts=[port_int], create_tunnels=False,
network=provider_net)
self.plug_ports_to_phys_br(provider_net, [port_phys],
namespace=ns_phys)
# The OVS agent doesn't monitor the physical bridges, no notification
# is sent when a port is up on a physical bridge, hence waiting only
# for the ports connected to br-int
self.wait_until_ports_state([port_int], up=True)
# sanity pings before we start
net_helpers.assert_ping(ns_phys, ip_int)
net_helpers.assert_ping(self.namespace, ip_phys)
with net_helpers.async_ping(ns_phys, [ip_int]) as done:
while not done():
self.agent.setup_physical_bridges(self.agent.bridge_mappings)
time.sleep(0.25)
with net_helpers.async_ping(self.namespace, [ip_phys]) as done:
while not done():
self.agent.setup_physical_bridges(self.agent.bridge_mappings)
time.sleep(0.25)
def test_noresync_after_port_gone(self):
'''This will test the scenario where a port is removed after listing
it but before getting vif info about it.
'''
self.ports = self.create_test_ports(amount=2)
self.agent = self.create_agent(create_tunnels=False)
self.network = self._create_test_network_dict()
self._plug_ports(self.network, self.ports, self.agent)
self.start_agent(self.agent, ports=self.ports,
unplug_ports=[self.ports[1]])
self.wait_until_ports_state([self.ports[0]], up=True)
self.assertRaises(
utils.WaitTimeout, self.wait_until_ports_state, [self.ports[1]],
up=True, timeout=10)
def test_ovs_restarted_event(self):
callback = mock.Mock()
self.setup_agent_and_ports(
port_dicts=self.create_test_ports())
registry.subscribe(callback,
resources.AGENT,
events.OVS_RESTARTED)
self.agent.check_ovs_status.return_value = constants.OVS_RESTARTED
utils.wait_until_true(lambda: callback.call_count, timeout=10)
callback.assert_called_with(resources.AGENT,
events.OVS_RESTARTED,
mock.ANY)
class TestOVSAgentExtensionConfig(base.OVSAgentTestFramework):
def setUp(self):
super(TestOVSAgentExtensionConfig, self).setUp()
self.config.set_override('extensions', ['qos'], 'agent')
self.agent = self.create_agent(create_tunnels=False)
def test_report_loaded_extension(self):
self.agent._report_state()
agent_state = self.agent.state_rpc.report_state.call_args[0][1]
self.assertEqual(['qos'], agent_state['configurations']['extensions'])