def _handleBondings(bondings, configurator, in_rollback):
""" Add/Edit/Remove bond interface """
logger = logging.getLogger("_handleBondings")
_netinfo = CachingNetInfo()
edition = []
addition = []
for name, attrs in bondings.items():
if 'remove' in attrs:
if name not in _netinfo.bondings:
if in_rollback:
logger.error(
'Cannot remove bonding %s during rollback: '
'does not exist', name)
continue
else:
raise ConfigNetworkError(
ne.ERR_BAD_BONDING,
"Cannot remove bonding %s: does not exist" % name)
bond_users = _netinfo.ifaceUsers(name)
# networks removal takes place before bondings handling, therefore
# all assigned networks (bond_users) should be already removed
if bond_users:
raise ConfigNetworkError(
ne.ERR_USED_BOND,
"Cannot remove bonding %s: used by another interfaces %s" %
(name, bond_users))
bond = Bond.objectivize(name, configurator, attrs.get('options'),
attrs.get('nics'), mtu=None,
_netinfo=_netinfo,
destroyOnMasterRemoval='remove' in attrs)
bond.remove()
_netinfo.del_bonding(name)
elif name in _netinfo.bondings:
edition.append((name, attrs))
else:
addition.append((name, attrs))
for name, attrs in edition:
bond = Bond.objectivize(name, configurator, attrs.get('options'),
attrs.get('nics'), mtu=None, _netinfo=_netinfo,
destroyOnMasterRemoval='remove' in attrs)
if len(bond.slaves) == 0:
raise ConfigNetworkError(ne.ERR_BAD_PARAMS, 'Missing required nics'
' for bonding device.')
logger.debug("Editing bond %r with options %s", bond, bond.options)
configurator.editBonding(bond, _netinfo)
for name, attrs in addition:
bond = Bond.objectivize(name, configurator, attrs.get('options'),
attrs.get('nics'), mtu=None, _netinfo=_netinfo,
destroyOnMasterRemoval='remove' in attrs)
if len(bond.slaves) == 0:
raise ConfigNetworkError(ne.ERR_BAD_PARAMS, 'Missing required nics'
' for bonding device.')
logger.debug("Creating bond %r with options %s", bond, bond.options)
configurator.configureBond(bond)
def __init__(self, name, configurator, ipv4=None, ipv6=None,
blockingdhcp=False, mtu=None, _netinfo=None):
if _netinfo is None:
_netinfo = CachingNetInfo()
if name not in _netinfo.nics:
raise ConfigNetworkError(ne.ERR_BAD_NIC, 'unknown nic: %s' % name)
if _netinfo.ifaceUsers(name):
mtu = max(mtu, mtus.getMtu(name))
super(Nic, self).__init__(name, configurator, ipv4, ipv6, blockingdhcp,
mtu)
def testIterNetworkHierarchy(self):
_netinfo = {
'networks': {},
'vlans': {},
'nics': ['testnic1', 'testnic2'],
'bondings': {},
'bridges': {}
}
fakeInfo = CachingNetInfo(_netinfo)
# Vlanned and bonded VM network
nic1 = Nic('testnic1', configurator=None, _netinfo=fakeInfo)
nic2 = Nic('testnic2', configurator=None, _netinfo=fakeInfo)
bond1 = Bond('bond42', configurator=None, slaves=(nic1, nic2))
vlan1 = Vlan(bond1, 4, configurator=None)
bridge1 = Bridge('testbridge', configurator=None, port=vlan1)
self.assertEqual([dev for dev in bridge1],
[bridge1, vlan1, bond1, nic1, nic2])
self.assertEqual(bond1, hierarchy_backing_device(bridge1))
self.assertEqual(4, hierarchy_vlan_tag(bridge1))
# Nic-less VM net
bridge2 = Bridge('testbridge', configurator=None, port=None)
self.assertEqual([dev for dev in bridge2], [bridge2])
self.assertEqual(None, hierarchy_backing_device(bridge2))
self.assertEqual(None, hierarchy_vlan_tag(bridge2))
# vlan-less VM net
bridge3 = Bridge('testbridge', configurator=None, port=bond1)
self.assertEqual([dev for dev in bridge3],
[bridge3, bond1, nic1, nic2])
self.assertEqual(bond1, hierarchy_backing_device(bridge3))
self.assertEqual(None, hierarchy_vlan_tag(bridge3))
# Bond-less VM net
bridge4 = Bridge('testbridge', configurator=None, port=nic1)
self.assertEqual([dev for dev in bridge4], [bridge4, nic1])
self.assertEqual(nic1, hierarchy_backing_device(bridge4))
self.assertEqual(None, hierarchy_vlan_tag(bridge4))
# vlanned and bonded non-VM net
self.assertEqual([dev for dev in vlan1], [vlan1, bond1, nic1, nic2])
self.assertEqual(bond1, hierarchy_backing_device(vlan1))
self.assertEqual(4, hierarchy_vlan_tag(vlan1))
# vlanned, bond-less non-VM net
vlan2 = Vlan(nic1, 5, configurator=None)
self.assertEqual([dev for dev in vlan2], [vlan2, nic1])
self.assertEqual(nic1, hierarchy_backing_device(vlan2))
self.assertEqual(5, hierarchy_vlan_tag(vlan2))
# non-vlanned and bonded non-VM net
self.assertEqual([dev for dev in bond1], [bond1, nic1, nic2])
self.assertEqual(bond1, hierarchy_backing_device(bond1))
self.assertEqual(None, hierarchy_vlan_tag(bond1))
# non-vlanned and bond-less non-VM net
self.assertEqual([dev for dev in nic2], [nic2])
self.assertEqual(nic2, hierarchy_backing_device(nic2))
self.assertEqual(None, hierarchy_vlan_tag(nic2))
def __init__(self,
name,
configurator,
ipv4=None,
ipv6=None,
blockingdhcp=False,
mtu=None,
_netinfo=None):
if _netinfo is None:
_netinfo = CachingNetInfo()
if name not in _netinfo.nics:
raise ConfigNetworkError(ne.ERR_BAD_NIC, 'unknown nic: %s' % name)
if _netinfo.ifaceUsers(name):
mtu = max(mtu, mtus.getMtu(name))
super(Nic, self).__init__(name, configurator, ipv4, ipv6, blockingdhcp,
mtu)
def _delBrokenNetwork(network, netAttr, configurator):
'''Adapts the network information of broken networks so that they can be
deleted via _delNetwork.'''
_netinfo = CachingNetInfo()
_netinfo.networks[network] = netAttr
_netinfo.networks[network]['dhcpv4'] = False
if _netinfo.networks[network]['bridged']:
try:
nets = configurator.runningConfig.networks
except AttributeError:
nets = {} # ifcfg does not need net definitions
_netinfo.networks[network]['ports'] = persistence.configuredPorts(
nets, network)
elif not os.path.exists('/sys/class/net/' + netAttr['iface']):
# Bridgeless broken network without underlying device
libvirt.removeNetwork(network)
configurator.runningConfig.removeNetwork(network)
return
_delNetwork(network, configurator=configurator, bypassValidation=True,
implicitBonding=False, _netinfo=_netinfo)
def _add_missing_networks(configurator, networks, bondings, logger,
_netinfo=None):
# We need to use the newest host info
if _netinfo is None:
_netinfo = CachingNetInfo()
else:
_netinfo.updateDevices()
for network, attrs in networks.iteritems():
if 'remove' in attrs:
continue
d = dict(attrs)
if 'bonding' in d:
d.update(_buildBondOptions(d['bonding'], bondings, _netinfo))
else:
d['nics'] = [d.pop('nic')] if 'nic' in d else []
logger.debug("Adding network %r", network)
try:
_addNetwork(network, configurator=configurator,
implicitBonding=True, _netinfo=_netinfo, **d)
except ConfigNetworkError as cne:
if cne.errCode == ne.ERR_FAILED_IFUP:
logger.debug("Adding network %r failed. Running "
"orphan-devices cleanup", network)
_emergencyNetworkCleanup(network, attrs,
configurator)
raise
_netinfo.updateDevices() # Things like a bond mtu can change
def showNetwork(network):
_netinfo = CachingNetInfo()
if network not in _netinfo.networks:
print("Network %r doesn't exist" % network)
return
bridged = _netinfo.networks[network]['bridged']
print("Network %s(Bridged: %s):" % (network, bridged))
nics, vlan, vlan_id, bonding = _netinfo.getNicsVlanAndBondingForNetwork(
network)
if bridged:
ipaddr = _netinfo.networks[network]['addr']
netmask = _netinfo.networks[network]['netmask']
gateway = _netinfo.networks[network]['gateway']
print("ipaddr=%s, netmask=%s, gateway=%s" % (ipaddr, netmask, gateway))
else:
iface = _netinfo.networks[network]['iface']
ipaddr = _netinfo.nics[iface]['addr']
netmask = _netinfo.nics[iface]['netmask']
print("ipaddr=%s, netmask=%s" % (ipaddr, netmask))
print("vlan=%s, bonding=%s, nics=%s" % (vlan_id, bonding, nics))
def testTextualRepr(self):
_netinfo = {
'networks': {},
'vlans': {},
'nics': ['testnic1', 'testnic2'],
'bondings': {},
'bridges': {}
}
fakeInfo = CachingNetInfo(_netinfo)
nic1 = Nic('testnic1', None, _netinfo=fakeInfo)
nic2 = Nic('testnic2', None, _netinfo=fakeInfo)
bond1 = Bond('bond42', None, slaves=(nic1, nic2))
vlan1 = Vlan(bond1, '4', None)
bridge1 = Bridge('testbridge', None, port=vlan1)
self.assertEqual(
'%r' % bridge1, 'Bridge(testbridge: Vlan(bond42.4: '
'Bond(bond42: (Nic(testnic1), Nic(testnic2)))))')
def _handle_setup(nets, bonds, running_config, nets_by_nic):
commands = []
netinfo = CachingNetInfo()
for bond, attrs in six.iteritems(bonds):
if 'remove' not in attrs:
_validate_bond_configuration(attrs, netinfo)
if bond in running_config.bonds:
commands.extend(_edit_ovs_bond(bond, attrs, running_config))
else:
commands.extend(_setup_ovs_bond(bond, attrs, running_config))
for net, attrs in six.iteritems(nets):
if 'remove' not in attrs:
_validate_net_configuration(net, attrs, running_config, netinfo)
if net in running_config.networks:
commands.extend(
_edit_ovs_net(net, attrs, running_config, nets_by_nic))
else:
commands.extend(
_setup_ovs_net(net, attrs, running_config, nets_by_nic))
return commands
def _emergencyNetworkCleanup(network, networkAttrs, configurator):
"""Remove all leftovers after failed setupNetwork"""
_netinfo = CachingNetInfo()
topNetDev = None
if 'bonding' in networkAttrs:
if networkAttrs['bonding'] in _netinfo.bondings:
topNetDev = Bond.objectivize(networkAttrs['bonding'], configurator,
None, None, None, _netinfo, True)
elif 'nic' in networkAttrs:
if networkAttrs['nic'] in _netinfo.nics:
topNetDev = Nic(networkAttrs['nic'], configurator,
_netinfo=_netinfo)
if 'vlan' in networkAttrs and topNetDev:
vlan_name = '%s.%s' % (topNetDev.name, networkAttrs['vlan'])
if vlan_name in _netinfo.vlans:
topNetDev = Vlan(topNetDev, networkAttrs['vlan'], configurator)
if networkAttrs.get('bridged', True):
if network in _netinfo.bridges:
topNetDev = Bridge(network, configurator, port=topNetDev)
if topNetDev:
topNetDev.remove()
def _objectivizeNetwork(bridge=None, vlan=None, vlan_id=None, bonding=None,
bondingOptions=None, nics=None, mtu=None, ipaddr=None,
netmask=None, gateway=None, bootproto=None,
ipv6addr=None, ipv6gateway=None, ipv6autoconf=None,
dhcpv6=None, defaultRoute=None, _netinfo=None,
configurator=None, blockingdhcp=None,
implicitBonding=None, opts=None):
"""
Constructs an object hierarchy that describes the network configuration
that is passed in the parameters.
:param bridge: name of the bridge.
:param vlan: vlan device name.
:param vlan_id: vlan tag id.
:param bonding: name of the bond.
:param bondingOptions: bonding options separated by spaces.
:param nics: list of nic names.
:param mtu: the desired network maximum transmission unit.
:param ipaddr: IPv4 address in dotted decimal format.
:param netmask: IPv4 mask in dotted decimal format.
:param gateway: IPv4 address in dotted decimal format.
:param bootproto: protocol for getting IP config for the net, e.g., 'dhcp'
:param ipv6addr: IPv6 address in format address[/prefixlen].
:param ipv6gateway: IPv6 address in format address[/prefixlen].
:param ipv6autoconf: whether to use IPv6's stateless autoconfiguration.
:param dhcpv6: whether to use DHCPv6.
:param _netinfo: network information snapshot.
:param configurator: instance to use to apply the network configuration.
:param blockingdhcp: whether to acquire dhcp IP config in a synced manner.
:param implicitBonding: whether the bond's existance is tied to it's
master's.
:param defaultRoute: Should this network's gateway be set in the main
routing table?
:param opts: misc options received by the callee, e.g., {'stp': True}. this
function can modify the dictionary.
:returns: the top object of the hierarchy.
"""
if configurator is None:
configurator = ConfiguratorClass()
if _netinfo is None:
_netinfo = CachingNetInfo()
if opts is None:
opts = {}
if bootproto == 'none':
bootproto = None
if bondingOptions and not bonding:
raise ConfigNetworkError(ne.ERR_BAD_BONDING, 'Bonding options '
'specified without bonding')
topNetDev = None
if bonding:
topNetDev = Bond.objectivize(bonding, configurator, bondingOptions,
nics, mtu, _netinfo, implicitBonding)
elif nics:
try:
nic, = nics
except ValueError:
raise ConfigNetworkError(ne.ERR_BAD_BONDING, 'Multiple nics '
'require a bonding device')
else:
bond = _netinfo.getBondingForNic(nic)
if bond:
raise ConfigNetworkError(ne.ERR_USED_NIC, 'nic %s already '
'enslaved to %s' % (nic, bond))
topNetDev = Nic(nic, configurator, mtu=mtu, _netinfo=_netinfo)
if vlan is not None:
tag = _netinfo.vlans[vlan]['vlanid'] if vlan_id is None else vlan_id
topNetDev = Vlan(topNetDev, tag, configurator, mtu=mtu, name=vlan)
elif vlan_id is not None:
topNetDev = Vlan(topNetDev, vlan_id, configurator, mtu=mtu)
if bridge is not None:
stp = None
if 'stp' in opts:
stp = opts.pop('stp')
elif 'STP' in opts:
stp = opts.pop('STP')
try:
stp = bridges.stp_booleanize(stp)
except ValueError:
raise ConfigNetworkError(ne.ERR_BAD_PARAMS, '"%s" is not a valid '
'bridge STP value.' % stp)
topNetDev = Bridge(bridge, configurator, port=topNetDev, mtu=mtu,
stp=stp)
# inherit DUID from the port's existing DHCP lease (BZ#1219429)
if topNetDev.port and bootproto == 'dhcp':
_inherit_dhcp_unique_identifier(topNetDev, _netinfo)
if topNetDev is None:
raise ConfigNetworkError(ne.ERR_BAD_PARAMS, 'Network defined without '
'devices.')
topNetDev.ipv4 = IPv4(ipaddr, netmask, gateway, defaultRoute, bootproto)
topNetDev.ipv6 = IPv6(ipv6addr, ipv6gateway, defaultRoute, ipv6autoconf,
dhcpv6)
topNetDev.blockingdhcp = (configurator._inRollback or
utils.tobool(blockingdhcp))
return topNetDev
def setupNetworks(networks, bondings, **options):
"""Add/Edit/Remove configuration for networks and bondings.
Params:
networks - dict of key=network, value=attributes
where 'attributes' is a dict with the following optional items:
vlan=<id>
bonding="<name>" | nic="<name>"
(bonding and nics are mutually exclusive)
ipaddr="<ipv4>"
netmask="<ipv4>"
gateway="<ipv4>"
bootproto="..."
ipv6addr="<ipv6>[/<prefixlen>]"
ipv6gateway="<ipv6>"
ipv6autoconf="0|1"
dhcpv6="0|1"
defaultRoute=True|False
(other options will be passed to the config file AS-IS)
-- OR --
remove=True (other attributes can't be specified)
bondings - dict of key=bonding, value=attributes
where 'attributes' is a dict with the following optional items:
nics=["<nic1>" , "<nic2>", ...]
options="<bonding-options>"
-- OR --
remove=True (other attributes can't be specified)
options - dict of options, such as:
connectivityCheck=0|1
connectivityTimeout=<int>
_inRollback=True|False
Notes:
When you edit a network that is attached to a bonding, it's not
necessary to re-specify the bonding (you need only to note
the attachment in the network's attributes). Similarly, if you edit
a bonding, it's not necessary to specify its networks.
"""
logger = logging.getLogger("setupNetworks")
logger.debug("Setting up network according to configuration: "
"networks:%r, bondings:%r, options:%r" % (networks,
bondings, options))
_canonize_networks(networks)
# TODO: Add _canonize_bondings(bondings)
logging.debug("Validating configuration")
_validateNetworkSetup(networks, bondings)
bondings, networks, options = _apply_hook(bondings, networks, options)
libvirt_nets = netinfo_networks()
_netinfo = CachingNetInfo(_netinfo=netinfo_get(
libvirtNets2vdsm(libvirt_nets)))
connectivity_check_networks = set()
logger.debug("Applying...")
in_rollback = options.get('_inRollback', False)
kernel_config = kernelconfig.KernelConfig(_netinfo)
normalized_config = kernelconfig.normalize(
netconfpersistence.BaseConfig(networks, bondings))
with ConfiguratorClass(in_rollback) as configurator:
# Remove edited networks and networks with 'remove' attribute
for network, attrs in networks.items():
if network in _netinfo.networks:
logger.debug("Removing network %r", network)
keep_bridge = _should_keep_bridge(
network_attrs=normalized_config.networks[network],
currently_bridged=_netinfo.networks[network]['bridged'],
net_kernel_config=kernel_config.networks[network]
)
_delNetwork(network, configurator=configurator,
implicitBonding=False, _netinfo=_netinfo,
keep_bridge=keep_bridge)
_netinfo.del_network(network)
_netinfo.updateDevices()
elif network in libvirt_nets:
# If the network was not in _netinfo but is in the networks
# returned by libvirt, it means that we are dealing with
# a broken network.
logger.debug('Removing broken network %r', network)
_delBrokenNetwork(network, libvirt_nets[network],
configurator=configurator)
_netinfo.updateDevices()
elif 'remove' in attrs:
raise ConfigNetworkError(ne.ERR_BAD_BRIDGE, "Cannot delete "
"network %r: It doesn't exist in the "
"system" % network)
else:
connectivity_check_networks.add(network)
_handleBondings(bondings, configurator, in_rollback)
_add_missing_networks(configurator, networks, bondings,
logger, _netinfo)
_check_connectivity(connectivity_check_networks, networks, bondings,
options, logger)
hooks.after_network_setup(_buildSetupHookDict(networks, bondings, options))
def _delNetwork(network, vlan=None, bonding=None, nics=None,
bypassValidation=False,
configurator=None, implicitBonding=True,
_netinfo=None, keep_bridge=False, **options):
if _netinfo is None:
_netinfo = CachingNetInfo()
if configurator is None:
configurator = ConfiguratorClass()
if network not in _netinfo.networks:
logging.info("Network %r: doesn't exist in libvirt database", network)
vlan = _vlanToInternalRepresentation(vlan)
_delNonVdsmNetwork(network, vlan, bonding, nics, _netinfo,
configurator)
return
nics, vlan, vlan_id, bonding = _netinfo.getNicsVlanAndBondingForNetwork(
network)
bridged = _netinfo.networks[network]['bridged']
logging.info("Removing network %s with vlan=%s, bonding=%s, nics=%s,"
"keep_bridge=%s options=%s", network, vlan, bonding,
nics, keep_bridge, options)
if not bypassValidation:
_validateDelNetwork(network, vlan, bonding, nics,
bridged and not keep_bridge, _netinfo)
net_ent = _objectivizeNetwork(bridge=network if bridged else None,
vlan=vlan, vlan_id=vlan_id, bonding=bonding,
nics=nics, _netinfo=_netinfo,
configurator=configurator,
implicitBonding=implicitBonding)
net_ent.ipv4.bootproto = (
'dhcp' if _netinfo.networks[network]['dhcpv4'] else 'none')
if bridged and keep_bridge:
# we now leave the bridge intact but delete everything underneath it
net_ent_to_remove = net_ent.port
if net_ent_to_remove is not None:
# the configurator will not allow us to remove a bridge interface
# (be it vlan, bond or nic) unless it is not used anymore. Since
# we are interested to leave the bridge here, we have to disconnect
# it from the device so that the configurator will allow its
# removal.
_disconnect_bridge_port(net_ent_to_remove.name)
else:
net_ent_to_remove = net_ent
# We must first remove the libvirt network and then the network entity.
# Otherwise if we first remove the network entity while the libvirt
# network is still up, the network entity (In some flows) thinks that
# it still has users and thus does not allow its removal
configurator.removeLibvirtNetwork(network)
if net_ent_to_remove is not None:
logging.info('Removing network entity %s', net_ent_to_remove)
net_ent_to_remove.remove()
# We must remove the QoS last so that no devices nor networks mark the
# QoS as used
backing_device = hierarchy_backing_device(net_ent)
if (backing_device is not None and
os.path.exists(NET_PATH + '/' + backing_device.name)):
configurator.removeQoS(net_ent)
def listNetworks():
_netinfo = CachingNetInfo()
print("Networks:", _netinfo.networks.keys())
print("Vlans:", _netinfo.vlans.keys())
print("Nics:", _netinfo.nics.keys())
print("Bondings:", _netinfo.bondings.keys())
def _addNetwork(network, vlan=None, bonding=None, nics=None, ipaddr=None,
netmask=None, prefix=None, mtu=None, gateway=None, dhcpv6=None,
ipv6addr=None, ipv6gateway=None, ipv6autoconf=None,
configurator=None, bondingOptions=None,
bridged=True, _netinfo=None, hostQos=None,
defaultRoute=None, blockingdhcp=False, **options):
nics = nics or ()
if _netinfo is None:
_netinfo = CachingNetInfo()
bridged = utils.tobool(bridged)
if dhcpv6 is not None:
dhcpv6 = utils.tobool(dhcpv6)
if ipv6autoconf is not None:
ipv6autoconf = utils.tobool(ipv6autoconf)
vlan = _vlanToInternalRepresentation(vlan)
if network == '':
raise ConfigNetworkError(ne.ERR_BAD_BRIDGE,
'Empty network names are not valid')
if prefix:
if netmask:
raise ConfigNetworkError(ne.ERR_BAD_PARAMS,
'Both PREFIX and NETMASK supplied')
else:
try:
netmask = addresses.prefix2netmask(int(prefix))
except ValueError as ve:
raise ConfigNetworkError(ne.ERR_BAD_ADDR, "Bad prefix: %s" %
ve)
logging.debug('validating network...')
if network in _netinfo.networks:
raise ConfigNetworkError(
ne.ERR_USED_BRIDGE, 'Network already exists (%s)' % (network,))
if bonding:
_validateInterNetworkCompatibility(_netinfo, vlan, bonding)
else:
for nic in nics:
_validateInterNetworkCompatibility(_netinfo, vlan, nic)
# defaultRoute is set either explicitly by the client, OR if we're adding
# the management network.
# REQUIRED_FOR: clusterLevel<=3.3
# remove reference to constants.LEGACY_MANAGEMENT_NETWORKS
if defaultRoute is None:
defaultRoute = network in constants.LEGACY_MANAGEMENT_NETWORKS
logging.info("Adding network %s with vlan=%s, bonding=%s, nics=%s,"
" bondingOptions=%s, mtu=%s, bridged=%s, defaultRoute=%s,"
"options=%s", network, vlan, bonding, nics, bondingOptions,
mtu, bridged, defaultRoute, options)
if configurator is None:
configurator = ConfiguratorClass()
bootproto = options.pop('bootproto', None)
net_ent = _objectivizeNetwork(
bridge=network if bridged else None, vlan_id=vlan, bonding=bonding,
bondingOptions=bondingOptions, nics=nics, mtu=mtu, ipaddr=ipaddr,
netmask=netmask, gateway=gateway, bootproto=bootproto, dhcpv6=dhcpv6,
blockingdhcp=blockingdhcp, ipv6addr=ipv6addr, ipv6gateway=ipv6gateway,
ipv6autoconf=ipv6autoconf, defaultRoute=defaultRoute,
_netinfo=_netinfo, configurator=configurator, opts=options)
if bridged and network in _netinfo.bridges:
# The bridge already exists, update the configured entity to one level
# below and update the mtu of the bridge.
# The mtu is updated in the bridge configuration and on all the tap
# devices attached to it (for the VMs).
# (expecting the bridge running mtu to be updated by the kernel when
# the device attached under it has its mtu updated)
logging.info("Bridge %s already exists.", network)
net_ent_to_configure = net_ent.port
_update_mtu_for_an_existing_bridge(network, configurator, mtu)
else:
net_ent_to_configure = net_ent
if net_ent_to_configure is not None:
logging.info("Configuring device %s", net_ent_to_configure)
net_ent_to_configure.configure(**options)
configurator.configureLibvirtNetwork(network, net_ent)
if hostQos is not None:
configurator.configureQoS(hostQos, net_ent)