75 lines
2.8 KiB
Python
75 lines
2.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Isaku Yamahata <yamahata at private email ne jp>
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# <yamahata at valinux co jp>
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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 ryu.app.client import OFPClient
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from nova import flags
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from nova.network import linux_net
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from nova.openstack.common import cfg
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from nova.openstack.common import log as logging
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from nova import utils
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LOG = logging.getLogger(__name__)
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ryu_linux_net_opt = cfg.StrOpt('linuxnet_ovs_ryu_api_host',
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default='127.0.0.1:8080',
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help='Openflow Ryu REST API host:port')
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FLAGS = flags.FLAGS
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FLAGS.register_opt(ryu_linux_net_opt)
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def _get_datapath_id(bridge_name):
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out, _err = utils.execute('ovs-vsctl', 'get', 'Bridge',
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bridge_name, 'datapath_id', run_as_root=True)
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return out.strip().strip('"')
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def _get_port_no(dev):
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out, _err = utils.execute('ovs-vsctl', 'get', 'Interface', dev,
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'ofport', run_as_root=True)
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return int(out.strip())
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class LinuxOVSRyuInterfaceDriver(linux_net.LinuxOVSInterfaceDriver):
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def __init__(self):
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super(LinuxOVSRyuInterfaceDriver, self).__init__()
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LOG.debug('ryu rest host %s', FLAGS.linuxnet_ovs_ryu_api_host)
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self.ryu_client = OFPClient(FLAGS.linuxnet_ovs_ryu_api_host)
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self.datapath_id = _get_datapath_id(
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FLAGS.linuxnet_ovs_integration_bridge)
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if linux_net.binary_name == 'nova-network':
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for tables in [linux_net.iptables_manager.ipv4,
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linux_net.iptables_manager.ipv6]:
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tables['filter'].add_rule(
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'FORWARD',
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'--in-interface gw-+ --out-interface gw-+ -j DROP')
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linux_net.iptables_manager.apply()
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def plug(self, network, mac_address, gateway=True):
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LOG.debug("network %s mac_adress %s gateway %s",
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network, mac_address, gateway)
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ret = super(LinuxOVSRyuInterfaceDriver, self).plug(
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network, mac_address, gateway)
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port_no = _get_port_no(self.get_dev(network))
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self.ryu_client.create_port(network['uuid'], self.datapath_id, port_no)
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return ret
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