81e793d9f1
This patch introduces VXLAN support for Linuxbridge agent alongside with ml2 plugin support in linubridge mechnism driver. A new vxlan configuration section is added for vxlan related parameters. The agent also implements l2population RPC callbacks which allows ml2 plugin using l2population mechnism driver to populate vxlan forwarding and neighbor tables following portbinding events. It allows agent to respond locally to ARP requests for remote VMs and avoid dataplane based learning. This should help limiting the use of multicast or flooding for broadcast emulation in vxlan networks. These changes should anyway have a limited risk, as agent behaviour shouldn't be affected, except when vxlan is enabled alongside ml2 plugin. Implements: blueprint l2-population Change-Id: I99a961c53f9e451409f1affb079042936d8ae5c6
58 lines
2.2 KiB
Python
58 lines
2.2 KiB
Python
# Copyright (c) 2013 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"); 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 neutron.common import constants
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from neutron.extensions import portbindings
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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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LOG = log.getLogger(__name__)
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class LinuxbridgeMechanismDriver(mech_agent.AgentMechanismDriverBase):
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"""Attach to networks using linuxbridge L2 agent.
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The LinuxbridgeMechanismDriver integrates the ml2 plugin with the
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linuxbridge L2 agent. Port binding with this driver requires the
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linuxbridge 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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super(LinuxbridgeMechanismDriver, self).__init__(
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constants.AGENT_TYPE_LINUXBRIDGE,
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portbindings.VIF_TYPE_BRIDGE,
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True)
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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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tunnel_types = agent['configurations'].get('tunnel_types', [])
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LOG.debug(_("Checking segment: %(segment)s "
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"for mappings: %(mappings)s "
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"with tunnel_types: %(tunnel_types)s"),
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{'segment': segment, 'mappings': mappings,
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'tunnel_types': tunnel_types})
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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 tunnel_types:
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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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