54 lines
2.0 KiB
Python
54 lines
2.0 KiB
Python
# 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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"""Helper module for bindings that usually happen inside OSt instances"""
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import pyroute2
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from oslo_config import cfg
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from kuryr.lib.binding.drivers import utils
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from kuryr.lib import exceptions
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def get_link_iface(port):
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"""Gets the name of the interface to link the container virtual devices"""
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link = cfg.CONF.binding.link_iface
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if not link:
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# Guess the name from the port hwaddr
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ip = utils.get_ipdb()
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for name, data in ip.interfaces.items():
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if data['address'] == port[utils.MAC_ADDRESS_KEY]:
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link = data['ifname']
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break
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return link
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def port_unbind(endpoint_id, neutron_port, **kwargs):
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"""Unbinds the Neutron port from the network interface on the host.
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:param endpoint_id: the ID of the Docker container as string
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:param neutron_port: a port dictionary returned from python-neutronclient
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:param kwargs: Additional driver-specific arguments
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:returns: the tuple of stdout and stderr returned by processutils.execute
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invoked with the executable script for unbinding
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:raises: processutils.ProcessExecutionError, pyroute2.NetlinkError
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"""
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port_id = neutron_port['id']
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_, devname = utils.get_veth_pair_names(port_id)
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try:
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utils.remove_device(devname)
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except pyroute2.NetlinkError:
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raise exceptions.VethDeletionFailure(
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'Failed to delete the container device.')
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return '', None
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