138 lines
5.2 KiB
Python
138 lines
5.2 KiB
Python
# Copyright (c) 2016 OVH SAS
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# All Rights Reserved.
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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 oslo_utils import uuidutils
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from neutron.agent.linux import ip_lib
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from neutron.agent.linux import tc_lib
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from neutron.privileged.agent.linux import ip_lib as priv_ip_lib
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from neutron.tests.common import net_helpers
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from neutron.tests.functional import base as functional_base
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TEST_HZ_VALUE = 250
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LATENCY = 50
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BW_LIMIT = 1024
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BURST = 512
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BASE_DEV_NAME = "test_tap"
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class TcLibTestCase(functional_base.BaseSudoTestCase):
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def create_device(self, name):
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"""Create a tuntap with the specified name.
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The device is cleaned up at the end of the test.
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"""
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ip = ip_lib.IPWrapper()
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tap_device = ip.add_tuntap(name)
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self.addCleanup(tap_device.link.delete)
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tap_device.link.set_up()
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def test_filters_bandwidth_limit(self):
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device_name = "%s_filters" % BASE_DEV_NAME
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self.create_device(device_name)
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tc = tc_lib.TcCommand(device_name, TEST_HZ_VALUE)
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tc.set_filters_bw_limit(BW_LIMIT, BURST)
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bw_limit, burst = tc.get_filters_bw_limits()
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self.assertEqual(BW_LIMIT, bw_limit)
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self.assertEqual(BURST, burst)
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new_bw_limit = BW_LIMIT + 500
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new_burst = BURST + 50
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tc.update_filters_bw_limit(new_bw_limit, new_burst)
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bw_limit, burst = tc.get_filters_bw_limits()
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self.assertEqual(new_bw_limit, bw_limit)
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self.assertEqual(new_burst, burst)
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tc.delete_filters_bw_limit()
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bw_limit, burst = tc.get_filters_bw_limits()
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self.assertIsNone(bw_limit)
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self.assertIsNone(burst)
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def test_tbf_bandwidth_limit(self):
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device_name = "%s_tbf" % BASE_DEV_NAME
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self.create_device(device_name)
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tc = tc_lib.TcCommand(device_name, TEST_HZ_VALUE)
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tc.set_tbf_bw_limit(BW_LIMIT, BURST, LATENCY)
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bw_limit, burst = tc.get_tbf_bw_limits()
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self.assertEqual(BW_LIMIT, bw_limit)
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self.assertEqual(BURST, burst)
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new_bw_limit = BW_LIMIT + 500
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new_burst = BURST + 50
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tc.set_tbf_bw_limit(new_bw_limit, new_burst, LATENCY)
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bw_limit, burst = tc.get_tbf_bw_limits()
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self.assertEqual(new_bw_limit, bw_limit)
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self.assertEqual(new_burst, burst)
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tc.delete_tbf_bw_limit()
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bw_limit, burst = tc.get_tbf_bw_limits()
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self.assertIsNone(bw_limit)
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self.assertIsNone(burst)
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class TcPolicyClassTestCase(functional_base.BaseSudoTestCase):
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def _remove_ns(self, namespace):
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priv_ip_lib.remove_netns(namespace)
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def _create_two_namespaces(self):
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self.ns = ['ns1_' + uuidutils.generate_uuid(),
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'ns2_' + uuidutils.generate_uuid()]
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self.device = ['int1', 'int2']
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self.mac = []
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self.ip = ['10.100.0.1/24', '10.100.0.2/24']
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list(map(priv_ip_lib.create_netns, self.ns))
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ip_wrapper = ip_lib.IPWrapper(self.ns[0])
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ip_wrapper.add_veth(self.device[0], self.device[1], self.ns[1])
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for i in range(2):
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self.addCleanup(self._remove_ns, self.ns[i])
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ip_device = ip_lib.IPDevice(self.device[i], self.ns[i])
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self.mac.append(ip_device.link.address)
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ip_device.link.set_up()
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ip_device.addr.add(self.ip[i])
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def test_list_tc_policy_class_retrieve_statistics(self):
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statistics = {'bytes', 'packets', 'drop', 'overlimits', 'bps', 'pps',
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'qlen', 'backlog'}
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self._create_two_namespaces()
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tc_lib.add_tc_qdisc(self.device[0], 'htb', parent='root', handle='1:',
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namespace=self.ns[0])
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tc_lib.add_tc_policy_class(self.device[0], '1:', '1:10',
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max_kbps=1000, burst_kb=900, min_kbps=500,
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namespace=self.ns[0])
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tc_lib.add_tc_filter_match_mac(self.device[0], '1:', '1:10',
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self.mac[1], namespace=self.ns[0])
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tc_classes = tc_lib.list_tc_policy_class(self.device[0],
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namespace=self.ns[0])
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self.assertEqual(1, len(tc_classes))
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self.assertEqual(statistics, set(tc_classes[0]['stats']))
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bytes = tc_classes[0]['stats']['bytes']
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packets = tc_classes[0]['stats']['packets']
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net_helpers.assert_ping(self.ns[1], netaddr.IPNetwork(self.ip[0]).ip,
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count=1)
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tc_classes = tc_lib.list_tc_policy_class(self.device[0],
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namespace=self.ns[0])
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self.assertGreater(tc_classes[0]['stats']['bytes'], bytes)
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self.assertGreater(tc_classes[0]['stats']['packets'], packets)
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