80 lines
2.6 KiB
Python
80 lines
2.6 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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from neutron.agent.linux import ip_lib
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from neutron.agent.linux import tc_lib
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from neutron.tests.functional import base as functional_base
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BW_LIMIT = 100
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BURST = 50
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BW_MIN = 25
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DIRECTION_EGRESS = 'egress'
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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_bandwidth_limit(self):
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device_name = "tap_testmax"
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self.create_device(device_name)
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tc = tc_lib.TcCommand(device_name)
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tc.set_bw(BW_LIMIT, BURST, None, DIRECTION_EGRESS)
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bw_limit, burst, _ = tc.get_limits(DIRECTION_EGRESS)
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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 + 100
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new_burst = BURST + 50
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tc.set_bw(new_bw_limit, new_burst, None, DIRECTION_EGRESS)
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bw_limit, burst, _ = tc.get_limits(DIRECTION_EGRESS)
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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_bw(DIRECTION_EGRESS)
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bw_limit, burst, _ = tc.get_limits(DIRECTION_EGRESS)
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self.assertIsNone(bw_limit)
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self.assertIsNone(burst)
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def test_minimum_bandwidth(self):
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device_name = "tap_testmin"
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self.create_device(device_name)
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tc = tc_lib.TcCommand(device_name)
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tc.set_bw(None, None, BW_MIN, DIRECTION_EGRESS)
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_, _, bw_min = tc.get_limits(DIRECTION_EGRESS)
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self.assertEqual(BW_MIN, bw_min)
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new_bw_min = BW_MIN + 50
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tc.set_bw(None, None, new_bw_min, DIRECTION_EGRESS)
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_, _, bw_min = tc.get_limits(DIRECTION_EGRESS)
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self.assertEqual(new_bw_min, bw_min)
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tc.delete_bw(DIRECTION_EGRESS)
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_, _, bw_min = tc.get_limits(DIRECTION_EGRESS)
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self.assertIsNone(bw_min)
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