535 lines
21 KiB
Python
535 lines
21 KiB
Python
# Copyright 2015 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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from unittest import mock
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from neutron_lib import constants
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from neutron.agent.linux.openvswitch_firewall import constants as ovsfw_consts
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from neutron.agent.linux.openvswitch_firewall import firewall as ovsfw
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from neutron.agent.linux.openvswitch_firewall import rules
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from neutron.plugins.ml2.drivers.openvswitch.agent.common import constants \
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as ovs_consts
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from neutron.tests import base
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TESTING_VLAN_TAG = 1
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class TestIsValidPrefix(base.BaseTestCase):
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def test_valid_prefix_ipv4(self):
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is_valid = rules.is_valid_prefix('10.0.0.0/0')
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self.assertTrue(is_valid)
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def test_invalid_prefix_ipv4(self):
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is_valid = rules.is_valid_prefix('0.0.0.0/0')
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self.assertFalse(is_valid)
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def test_valid_prefix_ipv6(self):
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is_valid = rules.is_valid_prefix('ffff::0/0')
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self.assertTrue(is_valid)
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def test_invalid_prefix_ipv6(self):
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is_valid = rules.is_valid_prefix('0000:0::0/0')
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self.assertFalse(is_valid)
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is_valid = rules.is_valid_prefix('::0/0')
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self.assertFalse(is_valid)
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is_valid = rules.is_valid_prefix('::/0')
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self.assertFalse(is_valid)
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class TestCreateFlowsFromRuleAndPort(base.BaseTestCase):
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def setUp(self):
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super(TestCreateFlowsFromRuleAndPort, self).setUp()
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ovs_port = mock.Mock(vif_mac='00:00:00:00:00:00')
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ovs_port.ofport = 1
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port_dict = {'device': 'port_id'}
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self.port = ovsfw.OFPort(
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port_dict, ovs_port, vlan_tag=TESTING_VLAN_TAG)
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self.create_flows_mock = mock.patch.object(
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rules, 'create_protocol_flows').start()
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@property
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def passed_flow_template(self):
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return self.create_flows_mock.call_args[0][1]
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def _test_create_flows_from_rule_and_port_helper(
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self, rule, expected_template):
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rules.create_flows_from_rule_and_port(rule, self.port)
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self.assertEqual(expected_template, self.passed_flow_template)
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def test_create_flows_from_rule_and_port_no_ip_ipv4(self):
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rule = {
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'ethertype': constants.IPv4,
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'direction': constants.INGRESS_DIRECTION,
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}
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expected_template = {
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'priority': 74,
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'dl_type': constants.ETHERTYPE_IP,
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'reg_port': self.port.ofport,
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}
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self._test_create_flows_from_rule_and_port_helper(rule,
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expected_template)
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def test_create_flows_from_rule_and_port_src_and_dst_ipv4(self):
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rule = {
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'ethertype': constants.IPv4,
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'direction': constants.INGRESS_DIRECTION,
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'source_ip_prefix': '192.168.0.0/24',
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'dest_ip_prefix': '10.0.0.1/32',
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}
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expected_template = {
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'priority': 74,
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'dl_type': constants.ETHERTYPE_IP,
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'reg_port': self.port.ofport,
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'nw_src': '192.168.0.0/24',
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'nw_dst': '10.0.0.1/32',
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}
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self._test_create_flows_from_rule_and_port_helper(rule,
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expected_template)
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def test_create_flows_from_rule_and_port_src_and_dst_with_zero_ipv4(self):
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rule = {
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'ethertype': constants.IPv4,
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'direction': constants.INGRESS_DIRECTION,
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'source_ip_prefix': '192.168.0.0/24',
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'dest_ip_prefix': '0.0.0.0/0',
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}
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expected_template = {
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'priority': 74,
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'dl_type': constants.ETHERTYPE_IP,
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'reg_port': self.port.ofport,
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'nw_src': '192.168.0.0/24',
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}
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self._test_create_flows_from_rule_and_port_helper(rule,
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expected_template)
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def test_create_flows_from_rule_and_port_no_ip_ipv6(self):
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rule = {
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'ethertype': constants.IPv6,
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'direction': constants.INGRESS_DIRECTION,
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}
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expected_template = {
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'priority': 74,
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'dl_type': constants.ETHERTYPE_IPV6,
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'reg_port': self.port.ofport,
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}
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self._test_create_flows_from_rule_and_port_helper(rule,
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expected_template)
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def test_create_flows_from_rule_and_port_src_and_dst_ipv6(self):
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rule = {
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'ethertype': constants.IPv6,
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'direction': constants.INGRESS_DIRECTION,
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'source_ip_prefix': '2001:db8:bbbb::1/64',
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'dest_ip_prefix': '2001:db8:aaaa::1/64',
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}
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expected_template = {
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'priority': 74,
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'dl_type': constants.ETHERTYPE_IPV6,
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'reg_port': self.port.ofport,
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'ipv6_src': '2001:db8:bbbb::1/64',
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'ipv6_dst': '2001:db8:aaaa::1/64',
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}
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self._test_create_flows_from_rule_and_port_helper(rule,
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expected_template)
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def test_create_flows_from_rule_and_port_src_and_dst_with_zero_ipv6(self):
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rule = {
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'ethertype': constants.IPv6,
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'direction': constants.INGRESS_DIRECTION,
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'source_ip_prefix': '2001:db8:bbbb::1/64',
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'dest_ip_prefix': '::/0',
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}
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expected_template = {
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'priority': 74,
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'dl_type': constants.ETHERTYPE_IPV6,
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'reg_port': self.port.ofport,
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'ipv6_src': '2001:db8:bbbb::1/64',
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}
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self._test_create_flows_from_rule_and_port_helper(rule,
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expected_template)
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class TestCreateProtocolFlows(base.BaseTestCase):
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def setUp(self):
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super(TestCreateProtocolFlows, self).setUp()
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ovs_port = mock.Mock(vif_mac='00:00:00:00:00:00')
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ovs_port.ofport = 1
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port_dict = {'device': 'port_id'}
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self.port = ovsfw.OFPort(
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port_dict, ovs_port, vlan_tag=TESTING_VLAN_TAG)
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def _test_create_protocol_flows_helper(self, direction, rule,
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expected_flows):
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flow_template = {'some_settings': 'foo'}
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for flow in expected_flows:
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flow.update(flow_template)
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flows = rules.create_protocol_flows(
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direction, flow_template, self.port, rule)
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self.assertEqual(expected_flows, flows)
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def test_create_protocol_flows_ingress(self):
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rule = {'protocol': constants.PROTO_NUM_TCP}
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expected_flows = [{
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'table': ovs_consts.RULES_INGRESS_TABLE,
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'actions': 'output:1',
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'nw_proto': constants.PROTO_NUM_TCP,
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}]
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self._test_create_protocol_flows_helper(
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constants.INGRESS_DIRECTION, rule, expected_flows)
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def test_create_protocol_flows_egress(self):
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rule = {'protocol': constants.PROTO_NUM_TCP}
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expected_flows = [{
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'table': ovs_consts.RULES_EGRESS_TABLE,
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'actions': 'resubmit(,{:d})'.format(
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ovs_consts.ACCEPT_OR_INGRESS_TABLE),
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'nw_proto': constants.PROTO_NUM_TCP,
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}]
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self._test_create_protocol_flows_helper(
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constants.EGRESS_DIRECTION, rule, expected_flows)
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def test_create_protocol_flows_no_protocol(self):
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rule = {}
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expected_flows = [{
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'table': ovs_consts.RULES_EGRESS_TABLE,
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'actions': 'resubmit(,{:d})'.format(
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ovs_consts.ACCEPT_OR_INGRESS_TABLE),
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}]
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self._test_create_protocol_flows_helper(
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constants.EGRESS_DIRECTION, rule, expected_flows)
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def test_create_protocol_flows_icmp6(self):
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rule = {'ethertype': constants.IPv6,
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'protocol': constants.PROTO_NUM_IPV6_ICMP}
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expected_flows = [{
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'table': ovs_consts.RULES_EGRESS_TABLE,
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'actions': 'resubmit(,{:d})'.format(
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ovs_consts.ACCEPT_OR_INGRESS_TABLE),
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'nw_proto': constants.PROTO_NUM_IPV6_ICMP,
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}]
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self._test_create_protocol_flows_helper(
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constants.EGRESS_DIRECTION, rule, expected_flows)
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def test_create_protocol_flows_port_range(self):
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rule = {'ethertype': constants.IPv4,
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'protocol': constants.PROTO_NUM_TCP,
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'port_range_min': 22,
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'port_range_max': 23}
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expected_flows = [{
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'table': ovs_consts.RULES_EGRESS_TABLE,
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'actions': 'resubmit(,{:d})'.format(
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ovs_consts.ACCEPT_OR_INGRESS_TABLE),
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'nw_proto': constants.PROTO_NUM_TCP,
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'tcp_dst': '0x0016/0xfffe'
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}]
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self._test_create_protocol_flows_helper(
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constants.EGRESS_DIRECTION, rule, expected_flows)
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def test_create_protocol_flows_icmp(self):
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rule = {'ethertype': constants.IPv4,
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'protocol': constants.PROTO_NUM_ICMP,
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'port_range_min': 0}
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expected_flows = [{
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'table': ovs_consts.RULES_EGRESS_TABLE,
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'actions': 'resubmit(,{:d})'.format(
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ovs_consts.ACCEPT_OR_INGRESS_TABLE),
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'nw_proto': constants.PROTO_NUM_ICMP,
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'icmp_type': 0
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}]
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self._test_create_protocol_flows_helper(
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constants.EGRESS_DIRECTION, rule, expected_flows)
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def test_create_protocol_flows_ipv6_icmp(self):
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rule = {'ethertype': constants.IPv6,
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'protocol': constants.PROTO_NUM_IPV6_ICMP,
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'port_range_min': 5,
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'port_range_max': 0}
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expected_flows = [{
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'table': ovs_consts.RULES_EGRESS_TABLE,
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'actions': 'resubmit(,{:d})'.format(
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ovs_consts.ACCEPT_OR_INGRESS_TABLE),
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'nw_proto': constants.PROTO_NUM_IPV6_ICMP,
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'icmp_type': 5,
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'icmp_code': 0,
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}]
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self._test_create_protocol_flows_helper(
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constants.EGRESS_DIRECTION, rule, expected_flows)
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class TestCreatePortRangeFlows(base.BaseTestCase):
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def _test_create_port_range_flows_helper(self, expected_flows, rule):
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flow_template = {'some_settings': 'foo'}
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for flow in expected_flows:
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flow.update(flow_template)
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port_range_flows = rules.create_port_range_flows(flow_template, rule)
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self.assertEqual(expected_flows, port_range_flows)
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def test_create_port_range_flows_with_source_and_destination(self):
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rule = {
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'protocol': constants.PROTO_NUM_TCP,
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'source_port_range_min': 123,
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'source_port_range_max': 124,
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'port_range_min': 10,
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'port_range_max': 11,
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}
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expected_flows = [
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{'tcp_src': '0x007b', 'tcp_dst': '0x000a/0xfffe'},
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{'tcp_src': '0x007c', 'tcp_dst': '0x000a/0xfffe'},
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]
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self._test_create_port_range_flows_helper(expected_flows, rule)
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def test_create_port_range_flows_with_source(self):
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rule = {
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'protocol': constants.PROTO_NUM_TCP,
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'source_port_range_min': 123,
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'source_port_range_max': 124,
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}
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expected_flows = [
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{'tcp_src': '0x007b'},
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{'tcp_src': '0x007c'},
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]
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self._test_create_port_range_flows_helper(expected_flows, rule)
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def test_create_port_range_flows_with_destination(self):
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rule = {
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'protocol': constants.PROTO_NUM_TCP,
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'port_range_min': 10,
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'port_range_max': 11,
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}
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expected_flows = [
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{'tcp_dst': '0x000a/0xfffe'},
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]
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self._test_create_port_range_flows_helper(expected_flows, rule)
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def test_create_port_range_flows_without_port_range(self):
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rule = {
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'protocol': constants.PROTO_NUM_TCP,
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}
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expected_flows = []
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self._test_create_port_range_flows_helper(expected_flows, rule)
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def test_create_port_range_with_icmp_protocol(self):
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# NOTE: such call is prevented by create_protocols_flows
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rule = {
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'protocol': constants.PROTO_NUM_ICMP,
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'port_range_min': 10,
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'port_range_max': 11,
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}
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expected_flows = []
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self._test_create_port_range_flows_helper(expected_flows, rule)
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class TestCreateFlowsForIpAddress(base.BaseTestCase):
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def _generate_conjuncion_actions(self, conj_ids, offset):
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return ','.join(
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["conjunction(%d,1/2)" % (c + offset)
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for c in conj_ids])
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def test_create_flows_for_ip_address_egress(self):
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expected_template = {
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'table': ovs_consts.RULES_EGRESS_TABLE,
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'priority': 72,
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'dl_type': constants.ETHERTYPE_IP,
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'reg_net': 0x123,
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'nw_dst': '192.168.0.1/32'
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}
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conj_ids = [12, 20]
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flows = rules.create_flows_for_ip_address(
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('192.168.0.1', 'fa:16:3e:aa:bb:cc'),
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constants.EGRESS_DIRECTION, constants.IPv4,
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0x123, conj_ids)
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self.assertEqual(2, len(flows))
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self.assertEqual(ovsfw_consts.OF_STATE_ESTABLISHED_NOT_REPLY,
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flows[0]['ct_state'])
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self.assertEqual(ovsfw_consts.OF_STATE_NEW_NOT_ESTABLISHED,
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flows[1]['ct_state'])
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for i in range(2):
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self.assertEqual(self._generate_conjuncion_actions(conj_ids, i),
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flows[i]['actions'])
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for f in flows:
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del f['actions']
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del f['ct_state']
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self.assertEqual(expected_template, f)
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class TestCreateConjFlows(base.BaseTestCase):
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def test_create_conj_flows(self):
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ovs_port = mock.Mock(ofport=1, vif_mac='00:00:00:00:00:00')
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port_dict = {'device': 'port_id'}
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port = ovsfw.OFPort(
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port_dict, ovs_port, vlan_tag=TESTING_VLAN_TAG)
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conj_id = 1234
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expected_template = {
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'table': ovs_consts.RULES_INGRESS_TABLE,
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'dl_type': constants.ETHERTYPE_IPV6,
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'priority': 71,
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'conj_id': conj_id,
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'reg_port': port.ofport
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}
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flows = rules.create_conj_flows(port, conj_id,
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constants.INGRESS_DIRECTION,
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constants.IPv6)
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self.assertEqual(ovsfw_consts.OF_STATE_ESTABLISHED_NOT_REPLY,
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flows[0]['ct_state'])
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self.assertEqual(ovsfw_consts.OF_STATE_NEW_NOT_ESTABLISHED,
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flows[1]['ct_state'])
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self.assertEqual("output:{:d}".format(port.ofport),
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flows[0]['actions'])
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self.assertEqual("ct(commit,zone=NXM_NX_REG{:d}[0..15]),{:s},"
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"resubmit(,{:d})".format(
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ovsfw_consts.REG_NET, flows[0]['actions'],
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ovs_consts.ACCEPTED_INGRESS_TRAFFIC_TABLE),
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flows[1]['actions'])
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for f in flows:
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del f['actions']
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del f['ct_state']
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self.assertEqual(expected_template, f)
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expected_template['conj_id'] += 1
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class TestMergeRules(base.BaseTestCase):
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def setUp(self):
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super(TestMergeRules, self).setUp()
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self.rule_tmpl = [('direction', 'ingress'), ('ethertype', 'IPv4'),
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('protocol', 6)]
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def _test_merge_port_ranges_helper(self, expected, result):
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"""Take a list of (port_range_min, port_range_max, conj_ids)
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and an output from rules.merge_port_ranges and check if they
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are identical, ignoring the other rule fields.
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"""
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self.assertEqual(len(expected), len(result))
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for (range_min, range_max, conj_ids), result1 in zip(
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expected, result):
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self.assertEqual(range_min, result1[0].get('port_range_min'))
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self.assertEqual(range_max, result1[0].get('port_range_max'))
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self.assertEqual(conj_ids, set(result1[1]))
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def test__assert_mergeable_rules(self):
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self.assertRaises(RuntimeError,
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rules._assert_mergeable_rules,
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[({'direction': 'ingress', 'ethertype': 'IPv4',
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'protocol': 1}, 8),
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({'direction': 'ingress', 'ethertype': 'IPv6'},
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16)])
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def test_merge_common_rules_single(self):
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rule_conj_tuple = ({'direction': 'egress', 'ethertype': 'IPv4',
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'protocol': 1}, 8)
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result = rules.merge_common_rules([rule_conj_tuple])
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self.assertEqual([(rule_conj_tuple[0], [rule_conj_tuple[1]])],
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result)
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def test_merge_common_rules(self):
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rule_conj_list = [({'direction': 'ingress', 'ethertype': 'IPv4',
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'protocol': 1}, 8),
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({'direction': 'ingress', 'ethertype': 'IPv4',
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'protocol': 1, 'port_range_min': 3}, 16),
|
|
({'direction': 'ingress', 'ethertype': 'IPv4',
|
|
'protocol': 1, 'port_range_min': 3,
|
|
'port_range_max': 0}, 40),
|
|
({'direction': 'ingress', 'ethertype': 'IPv4',
|
|
'protocol': 1}, 24)]
|
|
result = rules.merge_common_rules(rule_conj_list)
|
|
self.assertItemsEqual(
|
|
[({'direction': 'ingress', 'ethertype': 'IPv4',
|
|
'protocol': 1}, [8, 24]),
|
|
({'direction': 'ingress', 'ethertype': 'IPv4',
|
|
'protocol': 1, 'port_range_min': 3}, [16]),
|
|
({'direction': 'ingress', 'ethertype': 'IPv4',
|
|
'protocol': 1, 'port_range_min': 3, 'port_range_max': 0},
|
|
[40])],
|
|
result)
|
|
|
|
def test_merge_port_ranges_overlapping(self):
|
|
result = rules.merge_port_ranges(
|
|
[(dict([('port_range_min', 20), ('port_range_max', 30)] +
|
|
self.rule_tmpl), 6),
|
|
(dict([('port_range_min', 30), ('port_range_max', 40)] +
|
|
self.rule_tmpl), 14),
|
|
(dict([('port_range_min', 35), ('port_range_max', 40)] +
|
|
self.rule_tmpl), 22),
|
|
(dict([('port_range_min', 20), ('port_range_max', 20)] +
|
|
self.rule_tmpl), 30)])
|
|
self._test_merge_port_ranges_helper([
|
|
# port_range_min, port_range_max, conj_ids
|
|
(20, 20, {6, 30}),
|
|
(21, 29, {6}),
|
|
(30, 30, {6, 14}),
|
|
(31, 34, {14}),
|
|
(35, 40, {14, 22})], result)
|
|
|
|
def test_merge_port_ranges_no_port_ranges(self):
|
|
result = rules.merge_port_ranges(
|
|
[(dict(self.rule_tmpl), 10),
|
|
(dict(self.rule_tmpl), 12),
|
|
(dict([('port_range_min', 30), ('port_range_max', 40)] +
|
|
self.rule_tmpl), 4)])
|
|
self._test_merge_port_ranges_helper([
|
|
(1, 29, {10, 12}),
|
|
(30, 40, {10, 12, 4}),
|
|
(41, 65535, {10, 12})], result)
|
|
|
|
def test_merge_port_ranges_no_port_ranges_same_conj_id(self):
|
|
result = rules.merge_port_ranges(
|
|
[(dict(self.rule_tmpl), 10),
|
|
(dict(self.rule_tmpl), 12),
|
|
(dict([('port_range_min', 30), ('port_range_max', 30)] +
|
|
self.rule_tmpl), 10)])
|
|
self._test_merge_port_ranges_helper([
|
|
(None, None, {10, 12})], result)
|
|
|
|
def test_merge_port_ranges_nonoverlapping(self):
|
|
result = rules.merge_port_ranges(
|
|
[(dict([('port_range_min', 30), ('port_range_max', 40)] +
|
|
self.rule_tmpl), 32),
|
|
(dict([('port_range_min', 100), ('port_range_max', 140)] +
|
|
self.rule_tmpl), 40)])
|
|
self._test_merge_port_ranges_helper(
|
|
[(30, 40, {32}), (100, 140, {40})], result)
|
|
|
|
|
|
class TestFlowPriority(base.BaseTestCase):
|
|
def test_flow_priority_offset(self):
|
|
self.assertEqual(0,
|
|
rules.flow_priority_offset(
|
|
{'foo': 'bar',
|
|
'remote_group_id': 'hoge'}))
|
|
self.assertEqual(4,
|
|
rules.flow_priority_offset({'foo': 'bar'}))
|
|
self.assertEqual(5,
|
|
rules.flow_priority_offset(
|
|
{'protocol': constants.PROTO_NUM_ICMP}))
|
|
self.assertEqual(7,
|
|
rules.flow_priority_offset(
|
|
{'protocol': constants.PROTO_NUM_TCP}))
|
|
|
|
self.assertEqual(6,
|
|
rules.flow_priority_offset(
|
|
{'protocol': constants.PROTO_NUM_ICMP,
|
|
'port_range_min': 0}))
|
|
self.assertEqual(7,
|
|
rules.flow_priority_offset(
|
|
{'protocol': constants.PROTO_NUM_IPV6_ICMP,
|
|
'port_range_min': 0, 'port_range_max': 0}))
|