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neutron/neutron/tests/unit/agent/linux/openvswitch_firewall/test_firewall.py

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# Copyright 2015 Red Hat, Inc.
#
# 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
import testtools
from neutron.agent.common import ovs_lib
from neutron.agent import firewall
from neutron.agent.linux.openvswitch_firewall import constants as ovsfw_consts
from neutron.agent.linux.openvswitch_firewall import firewall as ovsfw
from neutron.common import constants
from neutron.plugins.ml2.drivers.openvswitch.agent.common import constants \
as ovs_consts
from neutron.tests import base
TESTING_VLAN_TAG = 1
def create_ofport(port_dict):
ovs_port = mock.Mock(vif_mac='00:00:00:00:00:00', port_name="port-name")
return ovsfw.OFPort(port_dict, ovs_port, vlan_tag=TESTING_VLAN_TAG)
class TestCreateRegNumbers(base.BaseTestCase):
def test_no_registers_defined(self):
flow = {'foo': 'bar'}
ovsfw.create_reg_numbers(flow)
self.assertEqual({'foo': 'bar'}, flow)
def test_both_registers_defined(self):
flow = {'foo': 'bar', 'reg_port': 1, 'reg_net': 2}
expected_flow = {'foo': 'bar',
'reg{:d}'.format(ovsfw_consts.REG_PORT): 1,
'reg{:d}'.format(ovsfw_consts.REG_NET): 2}
ovsfw.create_reg_numbers(flow)
self.assertEqual(expected_flow, flow)
class TestSecurityGroup(base.BaseTestCase):
def setUp(self):
super(TestSecurityGroup, self).setUp()
self.sg = ovsfw.SecurityGroup('123')
self.sg.members = {'type': [1, 2, 3, 4]}
def test_update_rules(self):
rules = [
{'foo': 'bar', 'rule': 'all'}, {'bar': 'foo'},
{'remote_group_id': '123456', 'foo': 'bar'}]
expected_raw_rules = [{'foo': 'bar', 'rule': 'all'}, {'bar': 'foo'}]
expected_remote_rules = [{'remote_group_id': '123456', 'foo': 'bar'}]
self.sg.update_rules(rules)
self.assertEqual(expected_raw_rules, self.sg.raw_rules)
self.assertEqual(expected_remote_rules, self.sg.remote_rules)
def get_ethertype_filtered_addresses(self):
addresses = self.sg.get_ethertype_filtered_addresses('type')
expected_addresses = [1, 2, 3, 4]
self.assertEqual(expected_addresses, addresses)
def get_ethertype_filtered_addresses_with_excluded_addresses(self):
addresses = self.sg.get_ethertype_filtered_addresses('type', [2, 3])
expected_addresses = [1, 4]
self.assertEqual(expected_addresses, addresses)
class TestOFPort(base.BaseTestCase):
def setUp(self):
super(TestOFPort, self).setUp()
self.ipv4_addresses = ['10.0.0.1', '192.168.0.1']
self.ipv6_addresses = ['fe80::f816:3eff:fe2e:1']
port_dict = {'device': 1,
'fixed_ips': self.ipv4_addresses + self.ipv6_addresses}
self.port = create_ofport(port_dict)
def test_ipv4_address(self):
ipv4_addresses = self.port.ipv4_addresses
self.assertEqual(self.ipv4_addresses, ipv4_addresses)
def test_ipv6_address(self):
ipv6_addresses = self.port.ipv6_addresses
self.assertEqual(self.ipv6_addresses, ipv6_addresses)
def test__get_allowed_pairs(self):
port = {
'allowed_address_pairs': [
{'mac_address': 'foo', 'ip_address': '10.0.0.1'},
{'mac_address': 'bar', 'ip_address': '192.168.0.1'},
{'mac_address': 'baz', 'ip_address': '2003::f'},
]}
allowed_pairs_v4 = ovsfw.OFPort._get_allowed_pairs(port, version=4)
allowed_pairs_v6 = ovsfw.OFPort._get_allowed_pairs(port, version=6)
expected_aap_v4 = {('foo', '10.0.0.1'), ('bar', '192.168.0.1')}
expected_aap_v6 = {('baz', '2003::f')}
self.assertEqual(expected_aap_v4, allowed_pairs_v4)
self.assertEqual(expected_aap_v6, allowed_pairs_v6)
def test__get_allowed_pairs_empty(self):
port = {}
allowed_pairs = ovsfw.OFPort._get_allowed_pairs(port, version=4)
self.assertFalse(allowed_pairs)
def test_update(self):
old_port_dict = self.port.neutron_port_dict
new_port_dict = old_port_dict.copy()
added_ips = [1, 2, 3]
new_port_dict.update({
'fixed_ips': added_ips,
'allowed_address_pairs': [
{'mac_address': '00:00:00:00:00:01',
'ip_address': '192.168.0.1'},
{'mac_address': '00:00:00:00:00:01',
'ip_address': '2003::f'}],
})
self.port.update(new_port_dict)
self.assertEqual(new_port_dict, self.port.neutron_port_dict)
self.assertIsNot(new_port_dict, self.port.neutron_port_dict)
self.assertEqual(added_ips, self.port.fixed_ips)
self.assertEqual({('00:00:00:00:00:01', '192.168.0.1')},
self.port.allowed_pairs_v4)
self.assertIn(('00:00:00:00:00:01', '2003::f'),
self.port.allowed_pairs_v6)
class TestSGPortMap(base.BaseTestCase):
def setUp(self):
super(TestSGPortMap, self).setUp()
self.map = ovsfw.SGPortMap()
def test_get_or_create_sg_existing_sg(self):
self.map.sec_groups['id'] = mock.sentinel
sg = self.map.get_or_create_sg('id')
self.assertIs(mock.sentinel, sg)
def test_get_or_create_sg_nonexisting_sg(self):
with mock.patch.object(ovsfw, 'SecurityGroup') as sg_mock:
sg = self.map.get_or_create_sg('id')
self.assertEqual(sg_mock.return_value, sg)
def _check_port(self, port_id, expected_sg_ids):
port = self.map.ports[port_id]
expected_sgs = [self.map.sec_groups[sg_id]
for sg_id in expected_sg_ids]
self.assertEqual(port.sec_groups, expected_sgs)
def _check_sg(self, sg_id, expected_port_ids):
sg = self.map.sec_groups[sg_id]
expected_ports = {self.map.ports[port_id]
for port_id in expected_port_ids}
self.assertEqual(sg.ports, expected_ports)
def _create_ports_and_sgroups(self):
sg_1 = ovsfw.SecurityGroup(1)
sg_2 = ovsfw.SecurityGroup(2)
sg_3 = ovsfw.SecurityGroup(3)
port_a = create_ofport({'device': 'a'})
port_b = create_ofport({'device': 'b'})
self.map.ports = {'a': port_a, 'b': port_b}
self.map.sec_groups = {1: sg_1, 2: sg_2, 3: sg_3}
port_a.sec_groups = [sg_1, sg_2]
port_b.sec_groups = [sg_2, sg_3]
sg_1.ports = {port_a}
sg_2.ports = {port_a, port_b}
sg_3.ports = {port_b}
def test_create_port(self):
port = create_ofport({'device': 'a'})
sec_groups = ['1', '2']
port_dict = {'security_groups': sec_groups}
self.map.create_port(port, port_dict)
self._check_port('a', sec_groups)
self._check_sg('1', ['a'])
self._check_sg('2', ['a'])
def test_update_port_sg_added(self):
self._create_ports_and_sgroups()
port_dict = {'security_groups': [1, 2, 3]}
self.map.update_port(self.map.ports['b'], port_dict)
self._check_port('a', [1, 2])
self._check_port('b', [1, 2, 3])
self._check_sg(1, ['a', 'b'])
self._check_sg(2, ['a', 'b'])
self._check_sg(3, ['b'])
def test_update_port_sg_removed(self):
self._create_ports_and_sgroups()
port_dict = {'security_groups': [1]}
self.map.update_port(self.map.ports['b'], port_dict)
self._check_port('a', [1, 2])
self._check_port('b', [1])
self._check_sg(1, ['a', 'b'])
self._check_sg(2, ['a'])
self._check_sg(3, [])
def test_remove_port(self):
self._create_ports_and_sgroups()
self.map.remove_port(self.map.ports['a'])
self._check_port('b', [2, 3])
self._check_sg(1, [])
self._check_sg(2, ['b'])
self._check_sg(3, ['b'])
self.assertNotIn('a', self.map.ports)
def test_update_rules(self):
"""Just make sure it doesn't crash"""
self.map.update_rules(1, [])
def test_update_members(self):
"""Just make sure we doesn't crash"""
self.map.update_members(1, [])
class FakeOVSPort(object):
def __init__(self, name, port, mac):
self.port_name = name
self.ofport = port
self.vif_mac = mac
class TestOVSFirewallDriver(base.BaseTestCase):
def setUp(self):
super(TestOVSFirewallDriver, self).setUp()
mock_bridge = mock.patch.object(
ovs_lib, 'OVSBridge', autospec=True).start()
self.firewall = ovsfw.OVSFirewallDriver(mock_bridge)
self.mock_bridge = self.firewall.int_br
self.mock_bridge.reset_mock()
self.fake_ovs_port = FakeOVSPort('port', 1, '00:00:00:00:00:00')
self.mock_bridge.br.get_vif_port_by_id.return_value = \
self.fake_ovs_port
def _prepare_security_group(self):
security_group_rules = [
{'ethertype': constants.IPv4,
'protocol': constants.PROTO_NAME_TCP,
'direction': firewall.INGRESS_DIRECTION,
'port_range_min': 123,
'port_range_max': 123}]
self.firewall.update_security_group_rules(1, security_group_rules)
security_group_rules = [
{'ethertype': constants.IPv4,
'protocol': constants.PROTO_NAME_UDP,
'direction': firewall.EGRESS_DIRECTION}]
self.firewall.update_security_group_rules(2, security_group_rules)
@property
def port_ofport(self):
return self.mock_bridge.br.get_vif_port_by_id.return_value.ofport
@property
def port_mac(self):
return self.mock_bridge.br.get_vif_port_by_id.return_value.vif_mac
def test_initialize_bridge(self):
br = self.firewall.initialize_bridge(self.mock_bridge)
self.assertEqual(br, self.mock_bridge.deferred.return_value)
def test__add_flow_dl_type_formatted_to_string(self):
dl_type = 0x0800
self.firewall._add_flow(dl_type=dl_type)
def test__add_flow_registers_are_replaced(self):
self.firewall._add_flow(in_port=1, reg_port=1, reg_net=2)
expected_calls = {'in_port': 1,
'reg{:d}'.format(ovsfw_consts.REG_PORT): 1,
'reg{:d}'.format(ovsfw_consts.REG_NET): 2}
self.mock_bridge.br.add_flow.assert_called_once_with(
**expected_calls)
def test__drop_all_unmatched_flows(self):
self.firewall._drop_all_unmatched_flows()
expected_calls = [
mock.call(actions='drop', priority=0,
table=ovs_consts.BASE_EGRESS_TABLE),
mock.call(actions='drop', priority=0,
table=ovs_consts.RULES_EGRESS_TABLE),
mock.call(actions='drop', priority=0,
table=ovs_consts.ACCEPT_OR_INGRESS_TABLE),
mock.call(actions='drop', priority=0,
table=ovs_consts.BASE_INGRESS_TABLE),
mock.call(actions='drop', priority=0,
table=ovs_consts.RULES_INGRESS_TABLE)]
actual_calls = self.firewall.int_br.br.add_flow.call_args_list
self.assertEqual(expected_calls, actual_calls)
def test_get_or_create_ofport_non_existing(self):
port_dict = {
'device': 'port-id',
'security_groups': [123, 456]}
port = self.firewall.get_or_create_ofport(port_dict)
sg1, sg2 = sorted(
self.firewall.sg_port_map.sec_groups.values(),
key=lambda x: x.id)
self.assertIn(port, self.firewall.sg_port_map.ports.values())
self.assertEqual(
sorted(port.sec_groups, key=lambda x: x.id), [sg1, sg2])
self.assertIn(port, sg1.ports)
self.assertIn(port, sg2.ports)
def test_get_or_create_ofport_existing(self):
port_dict = {
'device': 'port-id',
'security_groups': [123, 456]}
of_port = create_ofport(port_dict)
self.firewall.sg_port_map.ports[of_port.id] = of_port
port = self.firewall.get_or_create_ofport(port_dict)
sg1, sg2 = sorted(
self.firewall.sg_port_map.sec_groups.values(),
key=lambda x: x.id)
self.assertIs(of_port, port)
self.assertIn(port, self.firewall.sg_port_map.ports.values())
self.assertEqual(
sorted(port.sec_groups, key=lambda x: x.id), [sg1, sg2])
self.assertIn(port, sg1.ports)
self.assertIn(port, sg2.ports)
def test_get_or_create_ofport_missing(self):
port_dict = {
'device': 'port-id',
'security_groups': [123, 456]}
self.mock_bridge.br.get_vif_port_by_id.return_value = None
with testtools.ExpectedException(ovsfw.OVSFWPortNotFound):
self.firewall.get_or_create_ofport(port_dict)
def test_get_or_create_ofport_not_tagged(self):
port_dict = {
'device': 'port-id',
'security_groups': [123, 456]}
self.mock_bridge.br.db_get_val.return_value = None
port = self.firewall.get_or_create_ofport(port_dict)
self.assertEqual(ovs_consts.DEAD_VLAN_TAG, port.vlan_tag)
def test_is_port_managed_managed_port(self):
port_dict = {'device': 'port-id'}
self.firewall.sg_port_map.ports[port_dict['device']] = object()
is_managed = self.firewall.is_port_managed(port_dict)
self.assertTrue(is_managed)
def test_is_port_managed_not_managed_port(self):
port_dict = {'device': 'port-id'}
is_managed = self.firewall.is_port_managed(port_dict)
self.assertFalse(is_managed)
def test_prepare_port_filter(self):
port_dict = {'device': 'port-id',
'security_groups': [1]}
self._prepare_security_group()
self.firewall.prepare_port_filter(port_dict)
exp_ingress_classifier = mock.call(
actions='set_field:{:d}->reg5,set_field:{:d}->reg6,'
'resubmit(,{:d})'.format(
self.port_ofport, TESTING_VLAN_TAG,
ovs_consts.BASE_EGRESS_TABLE),
in_port=self.port_ofport,
priority=100,
table=ovs_consts.LOCAL_SWITCHING)
exp_egress_classifier = mock.call(
actions='set_field:{:d}->reg5,set_field:{:d}->reg6,'
'resubmit(,{:d})'.format(
self.port_ofport, TESTING_VLAN_TAG,
ovs_consts.BASE_INGRESS_TABLE),
dl_dst=self.port_mac,
priority=90,
table=ovs_consts.LOCAL_SWITCHING)
filter_rule = mock.call(
actions='output:{:d},ct(commit,zone=NXM_NX_REG6[0..15])'.format(
self.port_ofport),
dl_dst=self.port_mac,
dl_type="0x{:04x}".format(constants.ETHERTYPE_IP),
nw_proto=constants.PROTO_NUM_TCP,
priority=70,
reg5=self.port_ofport,
ct_state=ovsfw_consts.OF_STATE_NEW_NOT_ESTABLISHED,
table=ovs_consts.RULES_INGRESS_TABLE,
tcp_dst='0x007b')
calls = self.mock_bridge.br.add_flow.call_args_list
for call in exp_ingress_classifier, exp_egress_classifier, filter_rule:
self.assertIn(call, calls)
def test_prepare_port_filter_port_security_disabled(self):
port_dict = {'device': 'port-id',
'security_groups': [1],
'port_security_enabled': False}
self._prepare_security_group()
self.firewall.prepare_port_filter(port_dict)
self.assertFalse(self.mock_bridge.br.add_flow.called)
def test_prepare_port_filter_initialized_port(self):
port_dict = {'device': 'port-id',
'security_groups': [1]}
self._prepare_security_group()
self.firewall.prepare_port_filter(port_dict)
self.assertFalse(self.mock_bridge.br.delete_flows.called)
self.firewall.prepare_port_filter(port_dict)
self.assertTrue(self.mock_bridge.br.delete_flows.called)
def test_update_port_filter(self):
port_dict = {'device': 'port-id',
'security_groups': [1]}
self._prepare_security_group()
self.firewall.prepare_port_filter(port_dict)
port_dict['security_groups'] = [2]
self.mock_bridge.reset_mock()
self.firewall.update_port_filter(port_dict)
self.assertTrue(self.mock_bridge.br.delete_flows.called)
add_calls = self.mock_bridge.br.add_flow.call_args_list
filter_rule = mock.call(
actions='resubmit(,{:d})'.format(
ovs_consts.ACCEPT_OR_INGRESS_TABLE),
dl_src=self.port_mac,
dl_type="0x{:04x}".format(constants.ETHERTYPE_IP),
nw_proto=constants.PROTO_NUM_UDP,
priority=70,
ct_state=ovsfw_consts.OF_STATE_NEW_NOT_ESTABLISHED,
reg5=self.port_ofport,
table=ovs_consts.RULES_EGRESS_TABLE)
self.assertIn(filter_rule, add_calls)
def test_update_port_filter_create_new_port_if_not_present(self):
port_dict = {'device': 'port-id',
'security_groups': [1]}
self._prepare_security_group()
with mock.patch.object(
self.firewall, 'prepare_port_filter') as prepare_mock:
self.firewall.update_port_filter(port_dict)
self.assertTrue(prepare_mock.called)
def test_update_port_filter_port_security_disabled(self):
port_dict = {'device': 'port-id',
'security_groups': [1]}
self._prepare_security_group()
self.firewall.prepare_port_filter(port_dict)
port_dict['port_security_enabled'] = False
self.firewall.update_port_filter(port_dict)
self.assertTrue(self.mock_bridge.br.delete_flows.called)
def test_remove_port_filter(self):
port_dict = {'device': 'port-id',
'security_groups': [1]}
self._prepare_security_group()
self.firewall.prepare_port_filter(port_dict)
self.firewall.remove_port_filter(port_dict)
self.assertTrue(self.mock_bridge.br.delete_flows.called)
def test_remove_port_filter_port_security_disabled(self):
port_dict = {'device': 'port-id',
'security_groups': [1]}
self.firewall.remove_port_filter(port_dict)
self.assertFalse(self.mock_bridge.br.delete_flows.called)
def test_update_security_group_rules(self):
"""Just make sure it doesn't crash"""
new_rules = [
{'ethertype': constants.IPv4,
'direction': firewall.INGRESS_DIRECTION,
'protocol': constants.PROTO_NAME_ICMP},
{'ethertype': constants.IPv4,
'direction': firewall.EGRESS_DIRECTION,
'remote_group_id': 2}]
self.firewall.update_security_group_rules(1, new_rules)
def test_update_security_group_members(self):
"""Just make sure it doesn't crash"""
new_members = {constants.IPv4: [1, 2, 3, 4]}
self.firewall.update_security_group_members(2, new_members)