c5ebf8deec
Most of the Windows-specific plugins were able to work on other platforms as well, as long as osutils provides the relevant functionalities. This restructuring is an effort for helping future additions of other platforms. Change-Id: I21a35eb6eb8e2439cfdf861c59afc51c3618a779
56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
# Copyright 2014 Cloudbase Solutions Srl
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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 struct
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from oslo.config import cfg
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from cloudbaseinit.openstack.common import log as logging
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from cloudbaseinit.osutils import factory as osutils_factory
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from cloudbaseinit.plugins.common import base
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from cloudbaseinit.utils import dhcp
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opts = [
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cfg.BoolOpt('mtu_use_dhcp_config', default=True,
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help='Configures the network interfaces MTU based on the '
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'values provided via DHCP'),
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]
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CONF = cfg.CONF
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CONF.register_opts(opts)
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LOG = logging.getLogger(__name__)
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class MTUPlugin(base.BasePlugin):
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def execute(self, service, shared_data):
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if CONF.mtu_use_dhcp_config:
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osutils = osutils_factory.get_os_utils()
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dhcp_hosts = osutils.get_dhcp_hosts_in_use()
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for (mac_address, dhcp_host) in dhcp_hosts:
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options_data = dhcp.get_dhcp_options(dhcp_host,
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[dhcp.OPTION_MTU])
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if options_data:
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mtu_option_data = options_data.get(dhcp.OPTION_MTU)
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if mtu_option_data:
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mtu = struct.unpack('!H', mtu_option_data)[0]
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osutils.set_network_adapter_mtu(mac_address, mtu)
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else:
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LOG.debug('Could not obtain the MTU configuration '
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'via DHCP for interface "%s"' % mac_address)
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return (base.PLUGIN_EXECUTE_ON_NEXT_BOOT, False)
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