OpenStack Compute (Nova)
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# Copyright (C) 2011 Midokura KK
# Copyright (C) 2011 Nicira, Inc
# Copyright 2011 OpenStack Foundation
# All Rights Reserved.
# Copyright 2016 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""VIF drivers for libvirt."""
import os
import os_vif
from os_vif import exception as osv_exception
from os_vif.objects import fields as osv_fields
from os_vif.objects import vif as osv_vifs
from oslo_concurrency import processutils
from oslo_log import log as logging
from oslo_utils import strutils
import nova.conf
from nova import exception
from nova.i18n import _
from nova.network import model as network_model
from nova.network import os_vif_util
from nova import objects
from nova.pci import utils as pci_utils
import nova.privsep.linux_net
from nova import profiler
from nova import utils
from nova.virt.libvirt import config as vconfig
from nova.virt.libvirt import designer
from nova.virt import osinfo
LOG = logging.getLogger(__name__)
CONF = nova.conf.CONF
SUPPORTED_VIF_MODELS = {
'qemu': [
network_model.VIF_MODEL_VIRTIO,
network_model.VIF_MODEL_NE2K_PCI,
network_model.VIF_MODEL_PCNET,
network_model.VIF_MODEL_RTL8139,
network_model.VIF_MODEL_E1000,
network_model.VIF_MODEL_E1000E,
network_model.VIF_MODEL_LAN9118,
network_model.VIF_MODEL_SPAPR_VLAN,
network_model.VIF_MODEL_VMXNET3],
'kvm': [
network_model.VIF_MODEL_VIRTIO,
network_model.VIF_MODEL_NE2K_PCI,
network_model.VIF_MODEL_PCNET,
network_model.VIF_MODEL_RTL8139,
network_model.VIF_MODEL_E1000,
network_model.VIF_MODEL_E1000E,
network_model.VIF_MODEL_SPAPR_VLAN,
network_model.VIF_MODEL_VMXNET3],
'xen': [
network_model.VIF_MODEL_NETFRONT,
network_model.VIF_MODEL_NE2K_PCI,
network_model.VIF_MODEL_PCNET,
network_model.VIF_MODEL_RTL8139,
network_model.VIF_MODEL_E1000],
'lxc': [],
'uml': [],
'parallels': [
network_model.VIF_MODEL_VIRTIO,
network_model.VIF_MODEL_RTL8139,
network_model.VIF_MODEL_E1000],
}
def is_vif_model_valid_for_virt(virt_type, vif_model):
if vif_model is None:
return True
if virt_type not in SUPPORTED_VIF_MODELS:
raise exception.UnsupportedVirtType(virt=virt_type)
return vif_model in SUPPORTED_VIF_MODELS[virt_type]
def set_vf_interface_vlan(pci_addr, mac_addr, vlan=0):
vlan_id = int(vlan)
pf_ifname = pci_utils.get_ifname_by_pci_address(pci_addr,
pf_interface=True)
vf_ifname = pci_utils.get_ifname_by_pci_address(pci_addr)
vf_num = pci_utils.get_vf_num_by_pci_address(pci_addr)
nova.privsep.linux_net.set_device_macaddr_and_vlan(
pf_ifname, vf_num, mac_addr, vlan_id)
# Bring up/down the VF's interface
# TODO(edand): The mac is assigned as a workaround for the following issue
# https://bugzilla.redhat.com/show_bug.cgi?id=1372944
# once resolved it will be removed
port_state = 'up' if vlan_id > 0 else 'down'
nova.privsep.linux_net.set_device_macaddr(vf_ifname, mac_addr,
port_state=port_state)
def set_vf_trusted(pci_addr, trusted):
"""Configures the VF to be trusted or not
:param pci_addr: PCI slot of the device
:param trusted: Boolean value to indicate whether to
enable/disable 'trusted' capability
"""
pf_ifname = pci_utils.get_ifname_by_pci_address(pci_addr,
pf_interface=True)
vf_num = pci_utils.get_vf_num_by_pci_address(pci_addr)
nova.privsep.linux_net.set_device_trust(
pf_ifname, vf_num, trusted)
@utils.synchronized('lock_vlan', external=True)
def ensure_vlan(vlan_num, bridge_interface, mac_address=None, mtu=None,
interface=None):
"""Create a vlan unless it already exists."""
if interface is None:
interface = 'vlan%s' % vlan_num
if not nova.privsep.linux_net.device_exists(interface):
LOG.debug('Starting VLAN interface %s', interface)
nova.privsep.linux_net.add_vlan(bridge_interface, interface,
vlan_num)
# (danwent) the bridge will inherit this address, so we want to
# make sure it is the value set from the NetworkManager
if mac_address:
nova.privsep.linux_net.set_device_macaddr(
interface, mac_address)
nova.privsep.linux_net.set_device_enabled(interface)
# NOTE(vish): set mtu every time to ensure that changes to mtu get
# propagated
nova.privsep.linux_net.set_device_mtu(interface, mtu)
return interface
@profiler.trace_cls("vif_driver")
class LibvirtGenericVIFDriver(object):
"""Generic VIF driver for libvirt networking."""
def get_vif_devname(self, vif):
if 'devname' in vif:
return vif['devname']
return ("nic" + vif['id'])[:network_model.NIC_NAME_LEN]
def get_vif_model(self, image_meta=None, vif_model=None):
model = vif_model
# If the user has specified a 'vif_model' against the
# image then honour that model
if image_meta:
model = osinfo.HardwareProperties(image_meta).network_model
# If the virt type is KVM/QEMU/VZ(Parallels), then use virtio according
# to the global config parameter
if (model is None and CONF.libvirt.virt_type in
('kvm', 'qemu', 'parallels') and
CONF.libvirt.use_virtio_for_bridges):
model = network_model.VIF_MODEL_VIRTIO
return model
def get_base_config(self, instance, mac, image_meta,
inst_type, virt_type, vnic_type):
# TODO(sahid): We should rewrite it. This method handles too
# many unrelated things. We probably need to have a specific
# virtio, vhost, vhostuser functions.
conf = vconfig.LibvirtConfigGuestInterface()
# Default to letting libvirt / the hypervisor choose the model
model = None
driver = None
vhost_queues = None
rx_queue_size = None
# NOTE(stephenfin): Skip most things here as only apply to virtio
# devices
if vnic_type in network_model.VNIC_TYPES_DIRECT_PASSTHROUGH:
designer.set_vif_guest_frontend_config(
conf, mac, model, driver, vhost_queues, rx_queue_size)
return conf
rx_queue_size = CONF.libvirt.rx_queue_size
# if model has already been defined,
# image_meta contents will override it
model = self.get_vif_model(image_meta=image_meta, vif_model=model)
if not is_vif_model_valid_for_virt(virt_type, model):
raise exception.UnsupportedHardware(model=model, virt=virt_type)
# The rest of this only applies to virtio
if model != network_model.VIF_MODEL_VIRTIO:
designer.set_vif_guest_frontend_config(
conf, mac, model, driver, vhost_queues, rx_queue_size)
return conf
# Workaround libvirt bug, where it mistakenly enables vhost mode, even
# for non-KVM guests
if virt_type == 'qemu':
driver = 'qemu'
if virt_type in ('kvm', 'parallels'):
vhost_drv, vhost_queues = self._get_virtio_mq_settings(image_meta,
inst_type)
# TODO(sahid): It seems that we return driver 'vhost' even
# for vhostuser interface where for vhostuser interface
# the driver should be 'vhost-user'. That currently does
# not create any issue since QEMU ignores the driver
# argument for vhostuser interface but we should probably
# fix that anyway. Also we should enforce that the driver
# use vhost and not None.
driver = vhost_drv or driver
if driver == 'vhost' or driver is None:
# vhost backend only supports update of RX queue size
if rx_queue_size:
# TODO(sahid): Specifically force driver to be vhost
# that because if None we don't generate the XML
# driver element needed to set the queue size
# attribute. This can be removed when get_base_config
# will be fixed and rewrite to set the correct
# backend.
driver = 'vhost'
designer.set_vif_guest_frontend_config(
conf, mac, model, driver, vhost_queues, rx_queue_size)
return conf
def get_base_hostdev_pci_config(self, vif):
conf = vconfig.LibvirtConfigGuestHostdevPCI()
pci_slot = vif['profile']['pci_slot']
designer.set_vif_host_backend_hostdev_pci_config(conf, pci_slot)
return conf
def _get_virtio_mq_settings(self, image_meta, flavor):
"""A methods to set the number of virtio queues,
if it has been requested in extra specs.
"""
driver = None
vhost_queues = None
if self._requests_multiqueue(image_meta):
driver = 'vhost'
max_tap_queues = self._get_max_tap_queues()
if max_tap_queues:
vhost_queues = (max_tap_queues if flavor.vcpus > max_tap_queues
else flavor.vcpus)
else:
vhost_queues = flavor.vcpus
return (driver, vhost_queues)
def _requests_multiqueue(self, image_meta):
"""Check if multiqueue property is set in the image metadata."""
if not isinstance(image_meta, objects.ImageMeta):
image_meta = objects.ImageMeta.from_dict(image_meta)
img_props = image_meta.properties
if img_props.get('hw_vif_multiqueue_enabled'):
return True
return False
def _get_max_tap_queues(self):
# Note(sean-k-mooney): some linux distros have backported
# changes for newer kernels which make the kernel version
# number unreliable to determine the max queues supported
# To address this without making the code distro dependent
# we introduce a new config option and prefer it if set.
if CONF.libvirt.max_queues:
return CONF.libvirt.max_queues
# NOTE(kengo.sakai): In kernels prior to 3.0,
# multiple queues on a tap interface is not supported.
# In kernels 3.x, the number of queues on a tap interface
# is limited to 8. From 4.0, the number is 256.
# See: https://bugs.launchpad.net/nova/+bug/1570631
kernel_version = int(os.uname()[2].split(".")[0])
if kernel_version <= 2:
return 1
elif kernel_version == 3:
return 8
elif kernel_version == 4:
return 256
else:
return None
def get_bridge_name(self, vif):
return vif['network']['bridge']
def get_veth_pair_names(self, iface_id):
return (("qvb%s" % iface_id)[:network_model.NIC_NAME_LEN],
("qvo%s" % iface_id)[:network_model.NIC_NAME_LEN])
def get_config_802qbg(self, instance, vif, image_meta,
inst_type, virt_type):
conf = self.get_base_config(instance, vif['address'], image_meta,
inst_type, virt_type, vif['vnic_type'])
params = vif["qbg_params"]
designer.set_vif_host_backend_802qbg_config(
conf, vif['network'].get_meta('interface'),
params['managerid'],
params['typeid'],
params['typeidversion'],
params['instanceid'])
designer.set_vif_bandwidth_config(conf, inst_type)
return conf
def get_config_802qbh(self, instance, vif, image_meta,
inst_type, virt_type):
conf = self.get_base_config(instance, vif['address'], image_meta,
inst_type, virt_type, vif['vnic_type'])
profile = vif["profile"]
vif_details = vif["details"]
net_type = 'direct'
if vif['vnic_type'] == network_model.VNIC_TYPE_DIRECT:
net_type = 'hostdev'
designer.set_vif_host_backend_802qbh_config(
conf, net_type, profile['pci_slot'],
vif_details[network_model.VIF_DETAILS_PROFILEID])
designer.set_vif_bandwidth_config(conf, inst_type)
return conf
def get_config_hw_veb(self, instance, vif, image_meta,
inst_type, virt_type):
conf = self.get_base_config(instance, vif['address'], image_meta,
inst_type, virt_type, vif['vnic_type'])
profile = vif["profile"]
vif_details = vif["details"]
net_type = 'direct'
if vif['vnic_type'] == network_model.VNIC_TYPE_DIRECT:
net_type = 'hostdev'
designer.set_vif_host_backend_hw_veb(
conf, net_type, profile['pci_slot'],
vif_details[network_model.VIF_DETAILS_VLAN])
designer.set_vif_bandwidth_config(conf, inst_type)
return conf
def get_config_hostdev_physical(self, instance, vif, image_meta,
inst_type, virt_type):
return self.get_base_hostdev_pci_config(vif)
def get_config_macvtap(self, instance, vif, image_meta,
inst_type, virt_type):
conf = self.get_base_config(instance, vif['address'], image_meta,
inst_type, virt_type, vif['vnic_type'])
vif_details = vif['details']
macvtap_src = vif_details.get(network_model.VIF_DETAILS_MACVTAP_SOURCE)
macvtap_mode = vif_details.get(network_model.VIF_DETAILS_MACVTAP_MODE)
phys_interface = vif_details.get(
network_model.VIF_DETAILS_PHYS_INTERFACE)
missing_params = []
if macvtap_src is None:
missing_params.append(network_model.VIF_DETAILS_MACVTAP_SOURCE)
if macvtap_mode is None:
missing_params.append(network_model.VIF_DETAILS_MACVTAP_MODE)
if phys_interface is None:
missing_params.append(network_model.VIF_DETAILS_PHYS_INTERFACE)
if len(missing_params) > 0:
raise exception.VifDetailsMissingMacvtapParameters(
vif_id=vif['id'],
missing_params=missing_params)
designer.set_vif_host_backend_direct_config(
conf, macvtap_src, macvtap_mode)
designer.set_vif_bandwidth_config(conf, inst_type)
return conf
def get_config_iovisor(self, instance, vif, image_meta,
inst_type, virt_type):
conf = self.get_base_config(instance, vif['address'], image_meta,
inst_type, virt_type, vif['vnic_type'])
dev = self.get_vif_devname(vif)
designer.set_vif_host_backend_ethernet_config(conf, dev)
designer.set_vif_bandwidth_config(conf, inst_type)
return conf
def get_config_midonet(self, instance, vif, image_meta,
inst_type, virt_type):
conf = self.get_base_config(instance, vif['address'], image_meta,
inst_type, virt_type, vif['vnic_type'])
dev = self.get_vif_devname(vif)
designer.set_vif_host_backend_ethernet_config(conf, dev)
return conf
def get_config_tap(self, instance, vif, image_meta, inst_type, virt_type):
conf = self.get_base_config(instance, vif['address'], image_meta,
inst_type, virt_type, vif['vnic_type'])
dev = self.get_vif_devname(vif)
designer.set_vif_host_backend_ethernet_config(conf, dev)
network = vif.get('network')
if network and network.get_meta('mtu'):
designer.set_vif_mtu_config(conf, network.get_meta("mtu"))
return conf
def get_config_ib_hostdev(self, instance, vif, image_meta,
inst_type, virt_type):
return self.get_base_hostdev_pci_config(vif)
def _set_config_VIFGeneric(self, instance, vif, conf):
dev = vif.vif_name
designer.set_vif_host_backend_ethernet_config(conf, dev)
def _set_config_VIFBridge(self, instance, vif, conf):
conf.net_type = "bridge"
conf.source_dev = vif.bridge_name
conf.target_dev = vif.vif_name
def _set_config_VIFOpenVSwitch(self, instance, vif, conf):
conf.net_type = "bridge"
conf.source_dev = vif.bridge_name
conf.target_dev = vif.vif_name
self._set_config_VIFPortProfile(instance, vif, conf)
def _set_config_VIFVHostUser(self, instance, vif, conf):
# TODO(sahid): We should never configure a driver backend for
# vhostuser interface. Specifically override driver to use
# None. This can be removed when get_base_config will be fixed
# and rewrite to set the correct backend.
conf.driver_name = None
designer.set_vif_host_backend_vhostuser_config(
conf, vif.mode, vif.path, CONF.libvirt.rx_queue_size,
CONF.libvirt.tx_queue_size)
def _set_config_VIFHostDevice(self, instance, vif, conf):
if vif.dev_type == osv_fields.VIFHostDeviceDevType.ETHERNET:
# This sets the required fields for an <interface type='hostdev'>
# section in a libvirt domain (by using a subset of hw_veb's
# options).
designer.set_vif_host_backend_hw_veb(
conf, 'hostdev', vif.dev_address, None)
else:
# TODO(jangutter): dev_type == VIFHostDeviceDevType.GENERIC
# is currently unsupported under os-vif. The corresponding conf
# class would be: LibvirtConfigGuestHostdevPCI
# but os-vif only returns a LibvirtConfigGuestInterface object
raise exception.InternalError(
_("Unsupported os-vif VIFHostDevice dev_type %(type)s") %
{'type': vif.dev_type})
def _set_config_VIFPortProfileOpenVSwitch(self, profile, conf):
conf.vporttype = "openvswitch"
conf.add_vport_param("interfaceid",
profile.interface_id)
def _set_config_VIFPortProfile(self, instance, vif, conf):
# Set any port profile that may be required
profile_name = vif.port_profile.obj_name()
if profile_name == 'VIFPortProfileOpenVSwitch':
self._set_config_VIFPortProfileOpenVSwitch(vif.port_profile, conf)
else:
raise exception.InternalError(
_('Unsupported VIF port profile type %s') % profile_name)
def _get_config_os_vif(self, instance, vif, image_meta, inst_type,
virt_type, vnic_type):
"""Get the domain config for a VIF
:param instance: nova.objects.Instance
:param vif: os_vif.objects.vif.VIFBase subclass
:param image_meta: nova.objects.ImageMeta
:param inst_type: nova.objects.Flavor
:param virt_type: virtualization type
:param vnic_type: vnic type
:returns: nova.virt.libvirt.config.LibvirtConfigGuestInterface
"""
# Do the config that's common to all vif types
conf = self.get_base_config(instance, vif.address, image_meta,
inst_type, virt_type, vnic_type)
# Do the VIF type specific config
if isinstance(vif, osv_vifs.VIFGeneric):
self._set_config_VIFGeneric(instance, vif, conf)
elif isinstance(vif, osv_vifs.VIFBridge):
self._set_config_VIFBridge(instance, vif, conf)
elif isinstance(vif, osv_vifs.VIFOpenVSwitch):
self._set_config_VIFOpenVSwitch(instance, vif, conf)
elif isinstance(vif, osv_vifs.VIFVHostUser):
self._set_config_VIFVHostUser(instance, vif, conf)
elif isinstance(vif, osv_vifs.VIFHostDevice):
self._set_config_VIFHostDevice(instance, vif, conf)
else:
raise exception.InternalError(
_("Unsupported VIF type %s") % vif.obj_name())
# not all VIF types support bandwidth configuration
# https://github.com/libvirt/libvirt/blob/568a41722/src/conf/netdev_bandwidth_conf.h#L38
if vif.obj_name() not in ('VIFVHostUser', 'VIFHostDevice'):
designer.set_vif_bandwidth_config(conf, inst_type)
if 'network' in vif and 'mtu' in vif.network:
designer.set_vif_mtu_config(conf, vif.network.mtu)
return conf
def get_config(self, instance, vif, image_meta, inst_type, virt_type):
vif_type = vif['type']
vnic_type = vif['vnic_type']
# instance.display_name could be unicode
instance_repr = utils.get_obj_repr_unicode(instance)
LOG.debug('vif_type=%(vif_type)s instance=%(instance)s '
'vif=%(vif)s virt_type=%(virt_type)s',
{'vif_type': vif_type, 'instance': instance_repr,
'vif': vif, 'virt_type': virt_type})
if vif_type is None:
raise exception.InternalError(
_("vif_type parameter must be present "
"for this vif_driver implementation"))
# Try os-vif codepath first
vif_obj = os_vif_util.nova_to_osvif_vif(vif)
if vif_obj is not None:
return self._get_config_os_vif(instance, vif_obj, image_meta,
inst_type, virt_type, vnic_type)
# Legacy non-os-vif codepath
args = (instance, vif, image_meta, inst_type, virt_type)
if vif_type == network_model.VIF_TYPE_IOVISOR:
return self.get_config_iovisor(*args)
elif vif_type == network_model.VIF_TYPE_802_QBG:
return self.get_config_802qbg(*args)
elif vif_type == network_model.VIF_TYPE_802_QBH:
return self.get_config_802qbh(*args)
elif vif_type == network_model.VIF_TYPE_HW_VEB:
return self.get_config_hw_veb(*args)
elif vif_type == network_model.VIF_TYPE_HOSTDEV:
return self.get_config_hostdev_physical(*args)
elif vif_type == network_model.VIF_TYPE_MACVTAP:
return self.get_config_macvtap(*args)
elif vif_type == network_model.VIF_TYPE_MIDONET:
return self.get_config_midonet(*args)
elif vif_type == network_model.VIF_TYPE_TAP:
return self.get_config_tap(*args)
elif vif_type == network_model.VIF_TYPE_IB_HOSTDEV:
return self.get_config_ib_hostdev(*args)
raise exception.InternalError(_('Unexpected vif_type=%s') % vif_type)
def plug_ib_hostdev(self, instance, vif):
fabric = vif.get_physical_network()
if not fabric:
raise exception.NetworkMissingPhysicalNetwork(
network_uuid=vif['network']['id']
)
pci_slot = vif['profile']['pci_slot']
device_id = instance['uuid']
vnic_mac = vif['address']
try:
nova.privsep.libvirt.plug_infiniband_vif(
vnic_mac, device_id, fabric,
network_model.VIF_TYPE_IB_HOSTDEV, pci_slot)
except processutils.ProcessExecutionError:
LOG.exception("Failed while plugging ib hostdev vif",
instance=instance)
def plug_hw_veb(self, instance, vif):
# TODO(adrianc): The piece of code for MACVTAP can be removed once:
# 1. neutron SR-IOV agent does not rely on the administrative mac
# as depicted in https://bugs.launchpad.net/neutron/+bug/1841067
# 2. libvirt driver does not change mac address for macvtap VNICs
# or Alternatively does not rely on recreating libvirt's nodev
# name from the current mac address set on the netdevice.
# See: virt.libvrit.driver.LibvirtDriver._get_pcinet_info
if vif['vnic_type'] == network_model.VNIC_TYPE_MACVTAP:
set_vf_interface_vlan(
vif['profile']['pci_slot'],
mac_addr=vif['address'],
vlan=vif['details'][network_model.VIF_DETAILS_VLAN])
elif vif['vnic_type'] == network_model.VNIC_TYPE_DIRECT:
trusted = strutils.bool_from_string(
vif['profile'].get('trusted', "False"))
if trusted:
set_vf_trusted(vif['profile']['pci_slot'], True)
def plug_macvtap(self, instance, vif):
vif_details = vif['details']
vlan = vif_details.get(network_model.VIF_DETAILS_VLAN)
if vlan:
vlan_name = vif_details.get(
network_model.VIF_DETAILS_MACVTAP_SOURCE)
phys_if = vif_details.get(network_model.VIF_DETAILS_PHYS_INTERFACE)
ensure_vlan(vlan, phys_if, interface=vlan_name)
def plug_midonet(self, instance, vif):
"""Plug into MidoNet's network port
Bind the vif to a MidoNet virtual port.
"""
dev = self.get_vif_devname(vif)
port_id = vif['id']
try:
nova.privsep.linux_net.create_tap_dev(dev)
nova.privsep.libvirt.plug_midonet_vif(port_id, dev)
except processutils.ProcessExecutionError:
LOG.exception("Failed while plugging vif", instance=instance)
def plug_iovisor(self, instance, vif):
"""Plug using PLUMgrid IO Visor Driver
Connect a network device to their respective
Virtual Domain in PLUMgrid Platform.
"""
dev = self.get_vif_devname(vif)
iface_id = vif['id']
nova.privsep.linux_net.create_tap_dev(dev)
net_id = vif['network']['id']
tenant_id = instance.project_id
try:
nova.privsep.libvirt.plug_plumgrid_vif(
dev, iface_id, vif['address'], net_id, tenant_id)
except processutils.ProcessExecutionError:
LOG.exception("Failed while plugging vif", instance=instance)
def plug_tap(self, instance, vif):
"""Plug a VIF_TYPE_TAP virtual interface."""
dev = self.get_vif_devname(vif)
mac = vif['details'].get(network_model.VIF_DETAILS_TAP_MAC_ADDRESS)
image_meta = instance.image_meta
vif_model = self.get_vif_model(image_meta=image_meta)
# TODO(ganso): explore whether multiqueue works for other vif models
# that go through this code path.
multiqueue = (self._requests_multiqueue(image_meta) and
vif_model == network_model.VIF_MODEL_VIRTIO)
nova.privsep.linux_net.create_tap_dev(dev, mac, multiqueue=multiqueue)
network = vif.get('network')
mtu = network.get_meta('mtu') if network else None
nova.privsep.linux_net.set_device_mtu(dev, mtu)
def _plug_os_vif(self, instance, vif):
instance_info = os_vif_util.nova_to_osvif_instance(instance)
try:
os_vif.plug(vif, instance_info)
except osv_exception.ExceptionBase as ex:
msg = (_("Failure running os_vif plugin plug method: %(ex)s")
% {'ex': ex})
raise exception.InternalError(msg)
def plug(self, instance, vif):
vif_type = vif['type']
# instance.display_name could be unicode
instance_repr = utils.get_obj_repr_unicode(instance)
LOG.debug('vif_type=%(vif_type)s instance=%(instance)s '
'vif=%(vif)s',
{'vif_type': vif_type, 'instance': instance_repr,
'vif': vif})
if vif_type is None:
raise exception.VirtualInterfacePlugException(
_("vif_type parameter must be present "
"for this vif_driver implementation"))
# Try os-vif codepath first
vif_obj = os_vif_util.nova_to_osvif_vif(vif)
if vif_obj is not None:
self._plug_os_vif(instance, vif_obj)
return
# Legacy non-os-vif codepath
if vif_type == network_model.VIF_TYPE_IB_HOSTDEV:
self.plug_ib_hostdev(instance, vif)
elif vif_type == network_model.VIF_TYPE_HW_VEB:
self.plug_hw_veb(instance, vif)
elif vif_type == network_model.VIF_TYPE_MACVTAP:
self.plug_macvtap(instance, vif)
elif vif_type == network_model.VIF_TYPE_MIDONET:
self.plug_midonet(instance, vif)
elif vif_type == network_model.VIF_TYPE_IOVISOR:
self.plug_iovisor(instance, vif)
elif vif_type == network_model.VIF_TYPE_TAP:
self.plug_tap(instance, vif)
elif vif_type in {network_model.VIF_TYPE_802_QBG,
network_model.VIF_TYPE_802_QBH,
network_model.VIF_TYPE_HOSTDEV}:
# These are no-ops
pass
else:
raise exception.VirtualInterfacePlugException(
_("Plug VIF failed because of unexpected "
"vif_type=%s") % vif_type)
def unplug_ib_hostdev(self, instance, vif):
fabric = vif.get_physical_network()
if not fabric:
raise exception.NetworkMissingPhysicalNetwork(
network_uuid=vif['network']['id']
)
vnic_mac = vif['address']
try:
nova.privsep.libvirt.unplug_infiniband_vif(fabric, vnic_mac)
except Exception:
LOG.exception("Failed while unplugging ib hostdev vif")
def unplug_hw_veb(self, instance, vif):
# TODO(sean-k-mooney): remove in Train after backporting 0 mac
# change as this should no longer be needed with libvirt >= 3.2.0.
if vif['vnic_type'] == network_model.VNIC_TYPE_MACVTAP:
# NOTE(sean-k-mooney): Retaining the vm mac on the vf
# after unplugging the vif prevents the PF from transmitting
# a packet with that destination address. This would create a
# a network partition in the event a vm is migrated or the neuton
# port is reused for another vm before the VF is reused.
# The ip utility accepts the MAC 00:00:00:00:00:00 which can
# be used to reset the VF mac when no longer in use by a vm.
# As such we hardcode the 00:00:00:00:00:00 mac.
set_vf_interface_vlan(vif['profile']['pci_slot'],
mac_addr='00:00:00:00:00:00')
elif vif['vnic_type'] == network_model.VNIC_TYPE_DIRECT:
if "trusted" in vif['profile']:
set_vf_trusted(vif['profile']['pci_slot'], False)
def unplug_midonet(self, instance, vif):
"""Unplug from MidoNet network port
Unbind the vif from a MidoNet virtual port.
"""
dev = self.get_vif_devname(vif)
port_id = vif['id']
try:
nova.privsep.libvirt.unplug_midonet_vif(port_id)
nova.privsep.linux_net.delete_net_dev(dev)
except processutils.ProcessExecutionError:
LOG.exception("Failed while unplugging vif", instance=instance)
def unplug_tap(self, instance, vif):
"""Unplug a VIF_TYPE_TAP virtual interface."""
dev = self.get_vif_devname(vif)
try:
nova.privsep.linux_net.delete_net_dev(dev)
except processutils.ProcessExecutionError:
LOG.exception("Failed while unplugging vif", instance=instance)
def unplug_iovisor(self, instance, vif):
"""Unplug using PLUMgrid IO Visor Driver
Delete network device and to their respective
connection to the Virtual Domain in PLUMgrid Platform.
"""
dev = self.get_vif_devname(vif)
try:
nova.privsep.libvirt.unplug_plumgrid_vif(dev)
nova.privsep.linux_net.delete_net_dev(dev)
except processutils.ProcessExecutionError:
LOG.exception("Failed while unplugging vif", instance=instance)
def _unplug_os_vif(self, instance, vif):
instance_info = os_vif_util.nova_to_osvif_instance(instance)
try:
os_vif.unplug(vif, instance_info)
except osv_exception.ExceptionBase as ex:
msg = (_("Failure running os_vif plugin unplug method: %(ex)s")
% {'ex': ex})
raise exception.InternalError(msg)
def unplug(self, instance, vif):
vif_type = vif['type']
# instance.display_name could be unicode
instance_repr = utils.get_obj_repr_unicode(instance)
LOG.debug('vif_type=%(vif_type)s instance=%(instance)s '
'vif=%(vif)s',
{'vif_type': vif_type, 'instance': instance_repr,
'vif': vif})
if vif_type is None:
msg = _("vif_type parameter must be present for this vif_driver "
"implementation")
raise exception.InternalError(msg)
# Try os-vif codepath first
vif_obj = os_vif_util.nova_to_osvif_vif(vif)
if vif_obj is not None:
self._unplug_os_vif(instance, vif_obj)
return
# Legacy non-os-vif codepath
if vif_type == network_model.VIF_TYPE_IB_HOSTDEV:
self.unplug_ib_hostdev(instance, vif)
elif vif_type == network_model.VIF_TYPE_HW_VEB:
self.unplug_hw_veb(instance, vif)
elif vif_type == network_model.VIF_TYPE_MIDONET:
self.unplug_midonet(instance, vif)
elif vif_type == network_model.VIF_TYPE_IOVISOR:
self.unplug_iovisor(instance, vif)
elif vif_type == network_model.VIF_TYPE_TAP:
self.unplug_tap(instance, vif)
elif vif_type in {network_model.VIF_TYPE_802_QBG,
network_model.VIF_TYPE_802_QBH,
network_model.VIF_TYPE_HOSTDEV,
network_model.VIF_TYPE_MACVTAP}:
# These are no-ops
pass
else:
# TODO(stephenfin): This should probably raise
# VirtualInterfaceUnplugException
raise exception.InternalError(
_("Unplug VIF failed because of unexpected "
"vif_type=%s") % vif_type)