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neutron/neutron/agent/linux/ethtool.py

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# Copyright 2020 OpenStack Foundation
# All Rights Reserved.
#
# 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.
from neutron.agent.linux import ip_lib
class Ethtool(object):
COMMAND = 'ethtool'
@staticmethod
def _cmd(cmd, namespace, **kwargs):
ip_wrapper = ip_lib.IPWrapper(namespace)
return ip_wrapper.netns.execute(cmd, run_as_root=True, **kwargs)
@classmethod
def offload(cls, device, rx, tx, namespace=None):
rx = 'on' if rx else 'off'
tx = 'on' if tx else 'off'
cmd = ['--offload', device, 'rx', rx, 'tx', tx]
cmd = [cls.COMMAND] + cmd
cls._cmd(cmd, namespace)