89 lines
3.7 KiB
Python
89 lines
3.7 KiB
Python
# Copyright (c) 2014 OpenStack Foundation
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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");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from oslo.config import cfg
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from neutron.common import constants
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from neutron.extensions import portbindings
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from neutron.openstack.common import jsonutils
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from neutron.openstack.common import log
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from neutron.plugins.ml2 import driver_api as api
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from neutron.plugins.ml2.drivers import mech_agent
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from neutron.plugins.ml2.drivers.mlnx import config # noqa
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LOG = log.getLogger(__name__)
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class MlnxMechanismDriver(mech_agent.SimpleAgentMechanismDriverBase):
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"""Attach to networks using Mellanox eSwitch L2 agent.
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The MellanoxMechanismDriver integrates the ml2 plugin with the
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Mellanox eswitch L2 agent. Port binding with this driver requires the
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Mellanox eswitch agent to be running on the port's host, and that agent
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to have connectivity to at least one segment of the port's
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network.
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"""
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def __init__(self):
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# REVISIT(irenab): update supported_vnic_types to contain
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# only VNIC_DIRECT and VNIC_MACVTAP once its possible to specify
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# vnic_type via nova API/GUI. Currently VNIC_NORMAL is included
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# to enable VM creation via GUI. It should be noted, that if
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# several MDs are capable to bing bind port on chosen host, the
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# first listed MD will bind the port for VNIC_NORMAL.
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super(MlnxMechanismDriver, self).__init__(
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constants.AGENT_TYPE_MLNX,
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cfg.CONF.ESWITCH.vnic_type,
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{portbindings.CAP_PORT_FILTER: False},
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portbindings.VNIC_TYPES)
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self.update_profile = cfg.CONF.ESWITCH.apply_profile_patch
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def check_segment_for_agent(self, segment, agent):
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mappings = agent['configurations'].get('interface_mappings', {})
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LOG.debug(_("Checking segment: %(segment)s "
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"for mappings: %(mappings)s "),
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{'segment': segment, 'mappings': mappings})
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network_type = segment[api.NETWORK_TYPE]
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if network_type == 'local':
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return True
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elif network_type in ['flat', 'vlan']:
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return segment[api.PHYSICAL_NETWORK] in mappings
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else:
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return False
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def try_to_bind_segment_for_agent(self, context, segment, agent):
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if self.check_segment_for_agent(segment, agent):
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vif_type = self._get_vif_type(
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context.current[portbindings.VNIC_TYPE])
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context.set_binding(segment[api.ID],
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vif_type,
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self.vif_details)
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# REVISIT(irenab): Temporary solution till nova support
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# will be merged for physical_network propagation
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# via VIF object to VIFDriver (required by mlnx vif plugging).
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if self.update_profile:
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profile = {'physical_network':
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segment['physical_network']}
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context._binding.profile = jsonutils.dumps(profile)
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def _get_vif_type(self, requested_vnic_type):
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if requested_vnic_type == portbindings.VNIC_MACVTAP:
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return portbindings.VIF_TYPE_MLNX_DIRECT
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elif requested_vnic_type == portbindings.VNIC_DIRECT:
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return portbindings.VIF_TYPE_MLNX_HOSTDEV
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return self.vif_type
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