OpenStack Networking (Neutron)
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# Copyright (c) 2014 OpenStack Foundation, 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 mock
from neutron_lib import constants as p_const
from neutron_lib import context
from neutron_lib import exceptions as exc
from neutron_lib.plugins.ml2 import api
from oslo_config import cfg
from six import moves
import testtools
from testtools import matchers
from neutron.plugins.ml2.drivers import type_tunnel
TUNNEL_IP_ONE = "10.10.10.10"
TUNNEL_IP_TWO = "10.10.10.20"
TUNNEL_IPV6_ONE = "2001:db8:1::10"
HOST_ONE = 'fake_host_one'
HOST_TWO = 'fake_host_two'
TUN_MIN = 100
TUN_MAX = 109
TUNNEL_RANGES = [(TUN_MIN, TUN_MAX)]
UPDATED_TUNNEL_RANGES = [(TUN_MIN + 5, TUN_MAX + 5)]
class TunnelTypeTestMixin(object):
DRIVER_CLASS = None
TYPE = None
def setUp(self):
super(TunnelTypeTestMixin, self).setUp()
self.driver = self.DRIVER_CLASS()
self.driver.tunnel_ranges = TUNNEL_RANGES
self.driver.sync_allocations()
self.context = context.Context()
def test_tunnel_type(self):
self.assertEqual(self.TYPE, self.driver.get_type())
def test_validate_provider_segment(self):
segment = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: 'phys_net',
api.SEGMENTATION_ID: None}
with testtools.ExpectedException(exc.InvalidInput):
self.driver.validate_provider_segment(segment)
segment[api.PHYSICAL_NETWORK] = None
self.driver.validate_provider_segment(segment)
segment[api.SEGMENTATION_ID] = 1
self.driver.validate_provider_segment(segment)
def test_sync_tunnel_allocations(self):
self.assertIsNone(
self.driver.get_allocation(self.context, (TUN_MIN - 1)))
self.assertFalse(
self.driver.get_allocation(self.context, (TUN_MIN)).allocated)
self.assertFalse(
self.driver.get_allocation(self.context, (TUN_MIN + 1)).allocated)
self.assertFalse(
self.driver.get_allocation(self.context, (TUN_MAX - 1)).allocated)
self.assertFalse(
self.driver.get_allocation(self.context, (TUN_MAX)).allocated)
self.assertIsNone(
self.driver.get_allocation(self.context, (TUN_MAX + 1)))
self.driver.tunnel_ranges = UPDATED_TUNNEL_RANGES
self.driver.sync_allocations()
self.assertIsNone(
self.driver.get_allocation(self.context, (TUN_MIN + 5 - 1)))
self.assertFalse(
self.driver.get_allocation(self.context, (TUN_MIN + 5)).allocated)
self.assertFalse(
self.driver.get_allocation(self.context,
(TUN_MIN + 5 + 1)).allocated)
self.assertFalse(
self.driver.get_allocation(self.context,
(TUN_MAX + 5 - 1)).allocated)
self.assertFalse(
self.driver.get_allocation(self.context, (TUN_MAX + 5)).allocated)
self.assertIsNone(
self.driver.get_allocation(self.context, (TUN_MAX + 5 + 1)))
def _test_sync_allocations_and_allocated(self, tunnel_id):
segment = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: None,
api.SEGMENTATION_ID: tunnel_id}
self.driver.reserve_provider_segment(self.context, segment)
self.driver.tunnel_ranges = UPDATED_TUNNEL_RANGES
self.driver.sync_allocations()
self.assertTrue(
self.driver.get_allocation(self.context, tunnel_id).allocated)
def test_sync_allocations_and_allocated_in_initial_range(self):
self._test_sync_allocations_and_allocated(TUN_MIN + 2)
def test_sync_allocations_and_allocated_in_final_range(self):
self._test_sync_allocations_and_allocated(TUN_MAX + 2)
def test_sync_allocations_no_op(self):
def verify_no_chunk(iterable, chunk_size):
# no segment removed/added
self.assertEqual(0, len(list(iterable)))
return []
with mock.patch.object(
type_tunnel, 'chunks', side_effect=verify_no_chunk) as chunks:
self.driver.sync_allocations()
self.assertEqual(2, len(chunks.mock_calls))
def test_partial_segment_is_partial_segment(self):
segment = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: None,
api.SEGMENTATION_ID: None}
self.assertTrue(self.driver.is_partial_segment(segment))
def test_specific_segment_is_not_partial_segment(self):
segment = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: None,
api.SEGMENTATION_ID: 101}
self.assertFalse(self.driver.is_partial_segment(segment))
def test_reserve_provider_segment_full_specs(self):
segment = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: None,
api.SEGMENTATION_ID: 101}
observed = self.driver.reserve_provider_segment(self.context, segment)
alloc = self.driver.get_allocation(self.context,
observed[api.SEGMENTATION_ID])
self.assertTrue(alloc.allocated)
with testtools.ExpectedException(exc.TunnelIdInUse):
self.driver.reserve_provider_segment(self.context, segment)
self.driver.release_segment(self.context, segment)
alloc = self.driver.get_allocation(self.context,
observed[api.SEGMENTATION_ID])
self.assertFalse(alloc.allocated)
segment[api.SEGMENTATION_ID] = 1000
observed = self.driver.reserve_provider_segment(self.context, segment)
alloc = self.driver.get_allocation(self.context,
observed[api.SEGMENTATION_ID])
self.assertTrue(alloc.allocated)
self.driver.release_segment(self.context, segment)
alloc = self.driver.get_allocation(self.context,
observed[api.SEGMENTATION_ID])
self.assertIsNone(alloc)
def test_reserve_provider_segment(self):
tunnel_ids = set()
specs = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: 'None',
api.SEGMENTATION_ID: None}
for x in moves.range(TUN_MIN, TUN_MAX + 1):
segment = self.driver.reserve_provider_segment(self.context,
specs)
self.assertEqual(self.TYPE, segment[api.NETWORK_TYPE])
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.GreaterThan(TUN_MIN - 1))
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.LessThan(TUN_MAX + 1))
tunnel_ids.add(segment[api.SEGMENTATION_ID])
with testtools.ExpectedException(exc.NoNetworkAvailable):
segment = self.driver.reserve_provider_segment(self.context,
specs)
segment = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: 'None',
api.SEGMENTATION_ID: tunnel_ids.pop()}
self.driver.release_segment(self.context, segment)
segment = self.driver.reserve_provider_segment(self.context, specs)
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.GreaterThan(TUN_MIN - 1))
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.LessThan(TUN_MAX + 1))
tunnel_ids.add(segment[api.SEGMENTATION_ID])
for tunnel_id in tunnel_ids:
segment[api.SEGMENTATION_ID] = tunnel_id
self.driver.release_segment(self.context, segment)
def test_allocate_tenant_segment(self):
tunnel_ids = set()
for x in moves.range(TUN_MIN, TUN_MAX + 1):
segment = self.driver.allocate_tenant_segment(self.context)
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.GreaterThan(TUN_MIN - 1))
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.LessThan(TUN_MAX + 1))
tunnel_ids.add(segment[api.SEGMENTATION_ID])
segment = self.driver.allocate_tenant_segment(self.context)
self.assertIsNone(segment)
segment = {api.NETWORK_TYPE: self.TYPE,
api.PHYSICAL_NETWORK: 'None',
api.SEGMENTATION_ID: tunnel_ids.pop()}
self.driver.release_segment(self.context, segment)
segment = self.driver.allocate_tenant_segment(self.context)
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.GreaterThan(TUN_MIN - 1))
self.assertThat(segment[api.SEGMENTATION_ID],
matchers.LessThan(TUN_MAX + 1))
tunnel_ids.add(segment[api.SEGMENTATION_ID])
for tunnel_id in tunnel_ids:
segment[api.SEGMENTATION_ID] = tunnel_id
self.driver.release_segment(self.context, segment)
def add_endpoint(self, ip=TUNNEL_IP_ONE, host=HOST_ONE):
return self.driver.add_endpoint(ip, host)
def test_add_endpoint(self):
endpoint = self.add_endpoint()
self.assertEqual(TUNNEL_IP_ONE, endpoint.ip_address)
self.assertEqual(HOST_ONE, endpoint.host)
return endpoint
def test_add_endpoint_for_existing_tunnel_ip(self):
self.add_endpoint()
with mock.patch.object(type_tunnel.LOG, 'warning') as log_warn:
self.add_endpoint()
log_warn.assert_called_once_with(mock.ANY, TUNNEL_IP_ONE)
def test_get_endpoint_by_host(self):
self.add_endpoint()
host_endpoint = self.driver.get_endpoint_by_host(HOST_ONE)
self.assertEqual(TUNNEL_IP_ONE, host_endpoint.ip_address)
return host_endpoint
def test_get_endpoint_by_host_for_not_existing_host(self):
ip_endpoint = self.driver.get_endpoint_by_host(HOST_TWO)
self.assertIsNone(ip_endpoint)
def test_get_endpoint_by_ip(self):
self.add_endpoint()
ip_endpoint = self.driver.get_endpoint_by_ip(TUNNEL_IP_ONE)
self.assertEqual(HOST_ONE, ip_endpoint.host)
return ip_endpoint
def test_get_endpoint_by_ip_for_not_existing_tunnel_ip(self):
ip_endpoint = self.driver.get_endpoint_by_ip(TUNNEL_IP_TWO)
self.assertIsNone(ip_endpoint)
def test_delete_endpoint(self):
self.add_endpoint()
self.assertIsNone(self.driver.delete_endpoint(TUNNEL_IP_ONE))
# Get all the endpoints and verify its empty
endpoints = self.driver.get_endpoints()
self.assertNotIn(TUNNEL_IP_ONE, endpoints)
class TunnelTypeMultiRangeTestMixin(object):
DRIVER_CLASS = None
TUN_MIN0 = 100
TUN_MAX0 = 101
TUN_MIN1 = 200
TUN_MAX1 = 201
TUNNEL_MULTI_RANGES = [(TUN_MIN0, TUN_MAX0), (TUN_MIN1, TUN_MAX1)]
def setUp(self):
super(TunnelTypeMultiRangeTestMixin, self).setUp()
self.driver = self.DRIVER_CLASS()
self.driver.tunnel_ranges = self.TUNNEL_MULTI_RANGES
self.driver.sync_allocations()
self.context = context.Context()
def test_release_segment(self):
segments = [self.driver.allocate_tenant_segment(self.context)
for i in range(4)]
# Release them in random order. No special meaning.
for i in (0, 2, 1, 3):
self.driver.release_segment(self.context, segments[i])
for key in (self.TUN_MIN0, self.TUN_MAX0,
self.TUN_MIN1, self.TUN_MAX1):
alloc = self.driver.get_allocation(self.context, key)
self.assertFalse(alloc.allocated)
class TunnelRpcCallbackTestMixin(object):
DRIVER_CLASS = None
TYPE = None
def setUp(self):
super(TunnelRpcCallbackTestMixin, self).setUp()
self.driver = self.DRIVER_CLASS()
def _test_tunnel_sync(self, kwargs, delete_tunnel=False):
with mock.patch.object(self.notifier,
'tunnel_update') as tunnel_update,\
mock.patch.object(self.notifier,
'tunnel_delete') as tunnel_delete:
details = self.callbacks.tunnel_sync('fake_context', **kwargs)
tunnels = details['tunnels']
for tunnel in tunnels:
self.assertEqual(kwargs['tunnel_ip'], tunnel['ip_address'])
self.assertEqual(kwargs['host'], tunnel['host'])
self.assertTrue(tunnel_update.called)
if delete_tunnel:
self.assertTrue(tunnel_delete.called)
else:
self.assertFalse(tunnel_delete.called)
def _test_tunnel_sync_raises(self, kwargs):
with mock.patch.object(self.notifier,
'tunnel_update') as tunnel_update,\
mock.patch.object(self.notifier,
'tunnel_delete') as tunnel_delete:
self.assertRaises(exc.InvalidInput,
self.callbacks.tunnel_sync,
'fake_context', **kwargs)
self.assertFalse(tunnel_update.called)
self.assertFalse(tunnel_delete.called)
def test_tunnel_sync_called_without_host_passed(self):
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'tunnel_type': self.TYPE,
'host': None}
self._test_tunnel_sync(kwargs)
def test_tunnel_sync_called_with_host_passed_for_existing_tunnel_ip(self):
self.driver.add_endpoint(TUNNEL_IP_ONE, None)
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'tunnel_type': self.TYPE,
'host': HOST_ONE}
self._test_tunnel_sync(kwargs)
def test_tunnel_sync_called_with_host_passed(self):
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'tunnel_type': self.TYPE,
'host': HOST_ONE}
self._test_tunnel_sync(kwargs)
def test_tunnel_sync_called_with_host_passed_ipv6(self):
cfg.CONF.set_override('overlay_ip_version', 6, group='ml2')
kwargs = {'tunnel_ip': TUNNEL_IPV6_ONE, 'tunnel_type': self.TYPE,
'host': HOST_ONE}
self._test_tunnel_sync(kwargs)
def test_tunnel_sync_called_for_existing_endpoint(self):
self.driver.add_endpoint(TUNNEL_IP_ONE, HOST_ONE)
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'tunnel_type': self.TYPE,
'host': HOST_ONE}
self._test_tunnel_sync(kwargs)
def test_tunnel_sync_called_for_existing_host_with_tunnel_ip_changed(self):
self.driver.add_endpoint(TUNNEL_IP_ONE, HOST_ONE)
kwargs = {'tunnel_ip': TUNNEL_IP_TWO, 'tunnel_type': self.TYPE,
'host': HOST_ONE}
self._test_tunnel_sync(kwargs, True)
def test_tunnel_sync_called_with_used_tunnel_ip_host_roaming(self):
self.driver.add_endpoint(TUNNEL_IP_ONE, HOST_ONE)
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'tunnel_type': self.TYPE,
'host': HOST_TWO}
self._test_tunnel_sync(kwargs, False)
def test_tunnel_sync_called_with_used_tunnel_ip_roaming_case_two(self):
self.driver.add_endpoint(TUNNEL_IP_ONE, None)
self.driver.add_endpoint(TUNNEL_IP_TWO, HOST_TWO)
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'tunnel_type': self.TYPE,
'host': HOST_TWO}
self._test_tunnel_sync(kwargs, False)
def test_tunnel_sync_called_without_tunnel_ip(self):
kwargs = {'tunnel_type': self.TYPE, 'host': None}
self._test_tunnel_sync_raises(kwargs)
def test_tunnel_sync_called_without_tunnel_type(self):
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'host': None}
self._test_tunnel_sync_raises(kwargs)
def test_tunnel_sync_called_with_tunnel_overlay_mismatch(self):
cfg.CONF.set_override('overlay_ip_version', 6, group='ml2')
kwargs = {'tunnel_ip': TUNNEL_IP_ONE, 'tunnel_type': self.TYPE,
'host': HOST_ONE}
self._test_tunnel_sync_raises(kwargs)
def test_tunnel_sync_called_with_tunnel_overlay_mismatch_ipv6(self):
cfg.CONF.set_override('overlay_ip_version', 4, group='ml2')
kwargs = {'tunnel_ip': TUNNEL_IPV6_ONE, 'tunnel_type': self.TYPE,
'host': HOST_ONE}
self._test_tunnel_sync_raises(kwargs)
class TunnelTypeMTUTestMixin(object):
DRIVER_CLASS = None
TYPE = None
ENCAP_OVERHEAD = 0
def setUp(self):
super(TunnelTypeMTUTestMixin, self).setUp()
self.driver = self.DRIVER_CLASS()
def _test_get_mtu(self, ip_version):
cfg.CONF.set_override('overlay_ip_version', ip_version,
group='ml2')
ip_header_length = p_const.IP_HEADER_LENGTH[ip_version]
cfg.CONF.set_override('global_physnet_mtu', 1500)
cfg.CONF.set_override('path_mtu', 1475, group='ml2')
self.driver.physnet_mtus = {'physnet1': 1450, 'physnet2': 1400}
self.assertEqual(1475 - self.ENCAP_OVERHEAD - ip_header_length,
self.driver.get_mtu('physnet1'))
cfg.CONF.set_override('global_physnet_mtu', 1450)
cfg.CONF.set_override('path_mtu', 1475, group='ml2')
self.driver.physnet_mtus = {'physnet1': 1400, 'physnet2': 1425}
self.assertEqual(1450 - self.ENCAP_OVERHEAD - ip_header_length,
self.driver.get_mtu('physnet1'))
cfg.CONF.set_override('global_physnet_mtu', 0)
cfg.CONF.set_override('path_mtu', 1450, group='ml2')
self.driver.physnet_mtus = {'physnet1': 1425, 'physnet2': 1400}
self.assertEqual(1450 - self.ENCAP_OVERHEAD - ip_header_length,
self.driver.get_mtu('physnet1'))
cfg.CONF.set_override('global_physnet_mtu', 0)
cfg.CONF.set_override('path_mtu', 0, group='ml2')
self.driver.physnet_mtus = {}
self.assertEqual(0, self.driver.get_mtu('physnet1'))
def test_get_mtu_ipv4(self):
self._test_get_mtu(4)
def test_get_mtu_ipv6(self):
self._test_get_mtu(6)