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