f3130fe8e2
This adds an MTU field to the network model and has the vif_plug_ovs and vif_plug_linux_bridge drivers check for it before referencing the global config variable. Closes-Bug: #1623876 Change-Id: I327c901a285bca23560f49a921a5d030f7f71cad
204 lines
7.9 KiB
Python
204 lines
7.9 KiB
Python
# Derived from nova/virt/libvirt/vif.py
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#
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# Copyright (C) 2011 Midokura KK
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# Copyright (C) 2011 Nicira, Inc
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# Copyright 2011 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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import sys
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from os_vif import objects
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from os_vif import plugin
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from oslo_config import cfg
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from vif_plug_ovs import constants
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from vif_plug_ovs import exception
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from vif_plug_ovs import linux_net
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class OvsPlugin(plugin.PluginBase):
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"""An OVS plugin that can setup VIFs in many ways
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The OVS plugin supports several different VIF types, VIFBridge
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and VIFOpenVSwitch, and will choose the appropriate plugging
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action depending on the type of VIF config it receives.
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If given a VIFBridge, then it will create connect the VM via
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a regular Linux bridge device to allow security group rules to
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be applied to VM traiffic.
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"""
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NIC_NAME_LEN = 14
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CONFIG_OPTS = (
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cfg.IntOpt('network_device_mtu',
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default=1500,
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help='MTU setting for network interface.',
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deprecated_group="DEFAULT"),
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cfg.IntOpt('ovs_vsctl_timeout',
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default=120,
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help='Amount of time, in seconds, that ovs_vsctl should '
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'wait for a response from the database. 0 is to wait '
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'forever.',
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deprecated_group="DEFAULT"),
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)
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@staticmethod
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def gen_port_name(prefix, id):
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return ("%s%s" % (prefix, id))[:OvsPlugin.NIC_NAME_LEN]
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@staticmethod
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def get_veth_pair_names(vif):
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return (OvsPlugin.gen_port_name("qvb", vif.id),
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OvsPlugin.gen_port_name("qvo", vif.id))
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def describe(self):
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return objects.host_info.HostPluginInfo(
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plugin_name="ovs",
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vif_info=[
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objects.host_info.HostVIFInfo(
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vif_object_name=objects.vif.VIFBridge.__name__,
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min_version="1.0",
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max_version="1.0"),
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objects.host_info.HostVIFInfo(
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vif_object_name=objects.vif.VIFOpenVSwitch.__name__,
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min_version="1.0",
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max_version="1.0"),
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objects.host_info.HostVIFInfo(
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vif_object_name=objects.vif.VIFVHostUser.__name__,
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min_version="1.0",
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max_version="1.0")
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])
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def _create_vif_port(self, vif, vif_name, instance_info, **kwargs):
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if vif.network and vif.network.mtu:
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mtu = vif.network.mtu
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else:
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mtu = self.config.network_device_mtu
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linux_net.create_ovs_vif_port(
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vif.network.bridge,
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vif_name,
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vif.port_profile.interface_id,
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vif.address, instance_info.uuid,
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mtu,
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timeout=self.config.ovs_vsctl_timeout,
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**kwargs)
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def _plug_vhostuser(self, vif, instance_info):
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linux_net.ensure_ovs_bridge(vif.network.bridge,
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constants.OVS_DATAPATH_NETDEV)
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vif_name = OvsPlugin.gen_port_name("vhu", vif.id)
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self._create_vif_port(
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vif, vif_name, instance_info,
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interface_type=constants.OVS_VHOSTUSER_INTERFACE_TYPE)
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def _plug_bridge(self, vif, instance_info):
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"""Plug using hybrid strategy
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Create a per-VIF linux bridge, then link that bridge to the OVS
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integration bridge via a veth device, setting up the other end
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of the veth device just like a normal OVS port. Then boot the
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VIF on the linux bridge using standard libvirt mechanisms.
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"""
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v1_name, v2_name = self.get_veth_pair_names(vif)
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linux_net.ensure_bridge(vif.bridge_name)
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if not linux_net.device_exists(v2_name):
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if vif.network and vif.network.mtu:
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mtu = vif.network.mtu
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else:
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mtu = self.config.network_device_mtu
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linux_net.create_veth_pair(v1_name, v2_name, mtu)
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linux_net.add_bridge_port(vif.bridge_name, v1_name)
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linux_net.ensure_ovs_bridge(vif.network.bridge,
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constants.OVS_DATAPATH_SYSTEM)
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self._create_vif_port(vif, v2_name, instance_info)
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def _plug_vif_windows(self, vif, instance_info):
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"""Create a per-VIF OVS port."""
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if not linux_net.device_exists(vif.id):
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linux_net.ensure_ovs_bridge(vif.network.bridge,
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constants.OVS_DATAPATH_SYSTEM)
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self._create_vif_port(vif, vif.id, instance_info)
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def plug(self, vif, instance_info):
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if not hasattr(vif, "port_profile"):
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raise exception.MissingPortProfile()
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if not isinstance(vif.port_profile,
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objects.vif.VIFPortProfileOpenVSwitch):
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raise exception.WrongPortProfile(
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profile=vif.port_profile.__class__.__name__)
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if isinstance(vif, objects.vif.VIFOpenVSwitch):
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if sys.platform != constants.PLATFORM_WIN32:
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linux_net.ensure_ovs_bridge(vif.network.bridge,
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constants.OVS_DATAPATH_SYSTEM)
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else:
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self._plug_vif_windows(vif, instance_info)
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elif isinstance(vif, objects.vif.VIFBridge):
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if sys.platform != constants.PLATFORM_WIN32:
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self._plug_bridge(vif, instance_info)
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else:
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self._plug_vif_windows(vif, instance_info)
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elif isinstance(vif, objects.vif.VIFVHostUser):
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self._plug_vhostuser(vif, instance_info)
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def _unplug_vhostuser(self, vif, instance_info):
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linux_net.delete_ovs_vif_port(vif.network.bridge,
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OvsPlugin.gen_port_name("vhu", vif.id),
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timeout=self.config.ovs_vsctl_timeout)
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def _unplug_bridge(self, vif, instance_info):
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"""UnPlug using hybrid strategy
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Unhook port from OVS, unhook port from bridge, delete
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bridge, and delete both veth devices.
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"""
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v1_name, v2_name = self.get_veth_pair_names(vif)
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linux_net.delete_bridge(vif.bridge_name, v1_name)
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linux_net.delete_ovs_vif_port(vif.network.bridge, v2_name,
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timeout=self.config.ovs_vsctl_timeout)
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def _unplug_vif_windows(self, vif, instance_info):
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"""Remove port from OVS."""
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linux_net.delete_ovs_vif_port(vif.network.bridge, vif.id,
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timeout=self.config.ovs_vsctl_timeout)
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def unplug(self, vif, instance_info):
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if not hasattr(vif, "port_profile"):
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raise exception.MissingPortProfile()
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if not isinstance(vif.port_profile,
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objects.vif.VIFPortProfileOpenVSwitch):
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raise exception.WrongPortProfile(
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profile=vif.port_profile.__class__.__name__)
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if isinstance(vif, objects.vif.VIFOpenVSwitch):
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if sys.platform == constants.PLATFORM_WIN32:
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self._unplug_vif_windows(vif, instance_info)
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elif isinstance(vif, objects.vif.VIFBridge):
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if sys.platform != constants.PLATFORM_WIN32:
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self._unplug_bridge(vif, instance_info)
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else:
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self._unplug_vif_windows(vif, instance_info)
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elif isinstance(vif, objects.vif.VIFVHostUser):
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self._unplug_vhostuser(vif, instance_info)
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