165 lines
7.4 KiB
Python
165 lines
7.4 KiB
Python
# Copyright 2019 Red Hat, Inc.
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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 netaddr
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from neutron_lib import constants
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from neutronclient.common import exceptions as nclient_exceptions
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from oslo_utils import uuidutils
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from neutron.tests.common.exclusive_resources import ip_network
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from neutron.tests.fullstack import base
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from neutron.tests.fullstack.resources import environment
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from neutron.tests.fullstack.resources import machine
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class TestSubnet(base.BaseFullStackTestCase):
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def setUp(self):
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host_descriptions = [
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environment.HostDescription(l3_agent=True, dhcp_agent=True),
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environment.HostDescription()]
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env = environment.Environment(
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environment.EnvironmentDescription(network_type='vlan',
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l2_pop=False),
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host_descriptions)
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super(TestSubnet, self).setUp(env)
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self._project_id = uuidutils.generate_uuid()
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self._network = self._create_network(self._project_id)
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def _create_network(self, project_id, name='test_network'):
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return self.safe_client.create_network(project_id, name=name)
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def _create_subnetpool(self, project_id, min_prefixlen, max_prefixlen,
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default_prefixlen, prefixes):
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return self.safe_client.create_subnetpool(
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project_id=project_id, min_prefixlen=min_prefixlen,
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max_prefixlen=max_prefixlen,
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default_prefixlen=default_prefixlen, prefixes=prefixes)
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def _create_subnet(self, project_id, network_id, cidr=None,
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ipv6_address_mode=None, ipv6_ra_mode=None,
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subnetpool_id=None, ip_version=None, gateway_ip=None):
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if ipv6_address_mode or ipv6_ra_mode:
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ip_version = constants.IP_VERSION_6
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return self.safe_client.create_subnet(
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project_id, network_id, cidr=cidr, enable_dhcp=True,
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ipv6_address_mode=ipv6_address_mode, ipv6_ra_mode=ipv6_ra_mode,
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subnetpool_id=subnetpool_id, ip_version=ip_version,
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gateway_ip=gateway_ip)
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def _show_subnet(self, subnet_id):
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return self.client.show_subnet(subnet_id)
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def test_create_subnet_ipv4(self):
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cidr = self.useFixture(
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ip_network.ExclusiveIPNetwork(
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'240.0.0.0', '240.255.255.255', '24')).network
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subnet = self._create_subnet(self._project_id, self._network['id'],
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cidr)
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subnet = self._show_subnet(subnet['id'])
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self.assertEqual(subnet['subnet']['gateway_ip'],
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str(netaddr.IPNetwork(cidr).network + 1))
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def test_create_subnet_ipv6_slaac(self):
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cidr = self.useFixture(
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ip_network.ExclusiveIPNetwork(
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'2001:db8::', '2001:db8::ffff', '64')).network
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subnet = self._create_subnet(self._project_id, self._network['id'],
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cidr, ipv6_address_mode='slaac',
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ipv6_ra_mode='slaac')
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subnet = self._show_subnet(subnet['id'])
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self.assertEqual(subnet['subnet']['gateway_ip'],
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str(netaddr.IPNetwork(cidr).network))
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def test_create_subnet_ipv6_prefix_delegation(self):
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subnet = self._create_subnet(self._project_id, self._network['id'],
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None, ipv6_address_mode='slaac',
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ipv6_ra_mode='slaac',
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subnetpool_id='prefix_delegation')
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subnet = self._show_subnet(subnet['id'])
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self.assertIsNone(subnet['subnet']['gateway_ip'])
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def test_create_subnet_ipv4_with_subnetpool(self):
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subnetpool_cidr = self.useFixture(
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ip_network.ExclusiveIPNetwork(
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'240.0.0.0', '240.255.255.255', '16')).network
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subnetpool = self._create_subnetpool(self._project_id, 8, 24, 24,
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[subnetpool_cidr])
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subnets = list(subnetpool_cidr.subnet(24))
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# Request from subnetpool.
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subnet = self._create_subnet(self._project_id, self._network['id'],
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subnetpool_id=subnetpool['id'],
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ip_version=4)
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subnet = self._show_subnet(subnet['id'])
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self.assertEqual(subnet['subnet']['cidr'], str(subnets[0].cidr))
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self.assertEqual(subnet['subnet']['gateway_ip'],
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str(subnets[0].network + 1))
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# Request from subnetpool with gateway_ip.
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gateway_ip = subnets[1].ip + 10
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subnet = self._create_subnet(self._project_id, self._network['id'],
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subnetpool_id=subnetpool['id'],
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ip_version=4, gateway_ip=gateway_ip)
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subnet = self._show_subnet(subnet['id'])
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self.assertEqual(subnet['subnet']['cidr'], str(subnets[1].cidr))
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self.assertEqual(subnet['subnet']['gateway_ip'], str(gateway_ip))
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# Request from subnetpool with incorrect gateway_ip (cannot be the
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# network broadcast IP).
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gateway_ip = subnets[2].ip
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self.assertRaises(nclient_exceptions.Conflict,
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self._create_subnet, self._project_id,
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self._network['id'], subnetpool_id=subnetpool['id'],
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ip_version=4, gateway_ip=gateway_ip)
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# Request from subnetpool using a correct gateway_ip from the same
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# CIDR; that means this subnet has not been allocated yet.
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gateway_ip += 1
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subnet = self._create_subnet(self._project_id, self._network['id'],
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subnetpool_id=subnetpool['id'],
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ip_version=4, gateway_ip=gateway_ip)
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subnet = self._show_subnet(subnet['id'])
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self.assertEqual(subnet['subnet']['cidr'], str(subnets[2].cidr))
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self.assertEqual(subnet['subnet']['gateway_ip'], str(gateway_ip))
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def test_subnet_with_prefixlen_31_connectivity(self):
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network = self._create_network(self._project_id)
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self.safe_client.create_subnet(
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self._project_id, network['id'],
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cidr='10.14.0.20/31',
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gateway_ip='10.14.0.19',
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name='subnet-test',
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enable_dhcp=False)
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vms = self._prepare_vms_in_net(self._project_id, network, False)
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vms.ping_all()
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def test_subnet_with_prefixlen_32_vm_spawn(self):
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network = self._create_network(self._project_id)
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self.safe_client.create_subnet(
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self._project_id, network['id'],
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cidr='10.14.0.20/32',
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gateway_ip='10.14.0.19',
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name='subnet-test',
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enable_dhcp=False)
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vm = self.useFixture(
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machine.FakeFullstackMachine(
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self.environment.hosts[0],
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network['id'],
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self._project_id,
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self.safe_client))
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vm.block_until_boot()
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