# Copyright (C) 2011 Midokura KK # Copyright (C) 2011 Nicira, Inc # Copyright 2011 OpenStack Foundation # All Rights Reserved. # # 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 copy import os from oslo_concurrency import processutils from oslo_config import cfg from oslo_log import log as logging from nova import exception from nova.i18n import _ from nova.i18n import _LE from nova.network import linux_net from nova.network import model as network_model from nova import objects 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__) libvirt_vif_opts = [ cfg.BoolOpt('use_virtio_for_bridges', default=True, help='Use virtio for bridge interfaces with KVM/QEMU'), ] CONF = cfg.CONF CONF.register_opts(libvirt_vif_opts, 'libvirt') CONF.import_opt('use_ipv6', 'nova.netconf') # vhostuser queues support MIN_LIBVIRT_VHOSTUSER_MQ = (1, 2, 17) def is_vif_model_valid_for_virt(virt_type, vif_model): valid_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_SPAPR_VLAN], '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_SPAPR_VLAN], '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': [], } if vif_model is None: return True if virt_type not in valid_models: raise exception.UnsupportedVirtType(virt=virt_type) return vif_model in valid_models[virt_type] class LibvirtGenericVIFDriver(object): """Generic VIF driver for libvirt networking.""" def _normalize_vif_type(self, vif_type): return vif_type.replace('2.1q', '2q') 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_devname_with_prefix(self, vif, prefix): devname = self.get_vif_devname(vif) return prefix + devname[3:] def get_base_config(self, instance, vif, image_meta, inst_type, virt_type): conf = vconfig.LibvirtConfigGuestInterface() # Default to letting libvirt / the hypervisor choose the model model = None driver = None vhost_queues = None # 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 # Else if the virt type is KVM/QEMU, use virtio according # to the global config parameter if (model is None and virt_type in ('kvm', 'qemu') and CONF.libvirt.use_virtio_for_bridges): model = network_model.VIF_MODEL_VIRTIO # Workaround libvirt bug, where it mistakenly # enables vhost mode, even for non-KVM guests if (model == network_model.VIF_MODEL_VIRTIO and virt_type == "qemu"): driver = "qemu" if not is_vif_model_valid_for_virt(virt_type, model): raise exception.UnsupportedHardware(model=model, virt=virt_type) if (virt_type == 'kvm' and model == network_model.VIF_MODEL_VIRTIO): vhost_drv, vhost_queues = self._get_virtio_mq_settings(image_meta, inst_type) driver = vhost_drv or driver designer.set_vif_guest_frontend_config( conf, vif['address'], model, driver, vhost_queues) 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 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'): driver = 'vhost' vhost_queues = flavor.vcpus return (driver, vhost_queues) def get_bridge_name(self, vif): return vif['network']['bridge'] def get_ovs_interfaceid(self, vif): return vif.get('ovs_interfaceid') or vif['id'] def get_br_name(self, iface_id): return ("qbr" + iface_id)[:network_model.NIC_NAME_LEN] 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_firewall_required(self, vif): if vif.is_neutron_filtering_enabled(): return False if CONF.firewall_driver != "nova.virt.firewall.NoopFirewallDriver": return True return False def get_config_bridge(self, instance, vif, image_meta, inst_type, virt_type, host): """Get VIF configurations for bridge type.""" conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_type) designer.set_vif_host_backend_bridge_config( conf, self.get_bridge_name(vif), self.get_vif_devname(vif)) mac_id = vif['address'].replace(':', '') name = "nova-instance-" + instance.name + "-" + mac_id if self.get_firewall_required(vif): conf.filtername = name designer.set_vif_bandwidth_config(conf, inst_type) return conf def get_config_ovs_bridge(self, instance, vif, image_meta, inst_type, virt_type, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_type) designer.set_vif_host_backend_ovs_config( conf, self.get_bridge_name(vif), self.get_ovs_interfaceid(vif), self.get_vif_devname(vif)) designer.set_vif_bandwidth_config(conf, inst_type) return conf def get_config_ovs_hybrid(self, instance, vif, image_meta, inst_type, virt_type, host): newvif = copy.deepcopy(vif) newvif['network']['bridge'] = self.get_br_name(vif['id']) return self.get_config_bridge(instance, newvif, image_meta, inst_type, virt_type, host) def get_config_ovs(self, instance, vif, image_meta, inst_type, virt_type, host): if self.get_firewall_required(vif) or vif.is_hybrid_plug_enabled(): return self.get_config_ovs_hybrid(instance, vif, image_meta, inst_type, virt_type, host) else: return self.get_config_ovs_bridge(instance, vif, image_meta, inst_type, virt_type, host) def get_config_ivs_hybrid(self, instance, vif, image_meta, inst_type, virt_type, host): newvif = copy.deepcopy(vif) newvif['network']['bridge'] = self.get_br_name(vif['id']) return self.get_config_bridge(instance, newvif, image_meta, inst_type, virt_type, host) def get_config_ivs_ethernet(self, instance, vif, image_meta, inst_type, virt_type, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_type) dev = self.get_vif_devname(vif) designer.set_vif_host_backend_ethernet_config(conf, dev) return conf def get_config_ivs(self, instance, vif, image_meta, inst_type, virt_type, host): if self.get_firewall_required(vif) or vif.is_hybrid_plug_enabled(): return self.get_config_ivs_hybrid(instance, vif, image_meta, inst_type, virt_type, host) else: return self.get_config_ivs_ethernet(instance, vif, image_meta, inst_type, virt_type, host) def get_config_802qbg(self, instance, vif, image_meta, inst_type, virt_type, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_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, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_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, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_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_macvtap(self, instance, vif, image_meta, inst_type, virt_type, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_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, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_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, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_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, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_type) dev = self.get_vif_devname(vif) designer.set_vif_host_backend_ethernet_config(conf, dev) return conf def _get_vhostuser_settings(self, vif): vif_details = vif['details'] mode = vif_details.get(network_model.VIF_DETAILS_VHOSTUSER_MODE, 'server') sock_path = vif_details.get(network_model.VIF_DETAILS_VHOSTUSER_SOCKET) if sock_path is None: raise exception.VifDetailsMissingVhostuserSockPath( vif_id=vif['id']) return mode, sock_path def get_config_vhostuser(self, instance, vif, image_meta, inst_type, virt_type, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_type) mode, sock_path = self._get_vhostuser_settings(vif) designer.set_vif_host_backend_vhostuser_config(conf, mode, sock_path) # (vladikr) Not setting up driver and queues for vhostuser # as queues are not supported in Libvirt until version 1.2.17 if not host.has_min_version(MIN_LIBVIRT_VHOSTUSER_MQ): LOG.debug('Queues are not a vhostuser supported feature.') conf.driver_name = None conf.vhost_queues = None return conf def get_config_ib_hostdev(self, instance, vif, image_meta, inst_type, virt_type, host): conf = vconfig.LibvirtConfigGuestHostdevPCI() pci_slot = vif['profile']['pci_slot'] designer.set_vif_host_backend_ib_hostdev_config(conf, pci_slot) return conf def get_config_vrouter(self, instance, vif, image_meta, inst_type, virt_type, host): conf = self.get_base_config(instance, vif, image_meta, inst_type, virt_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(self, instance, vif, image_meta, inst_type, virt_type, host): vif_type = vif['type'] LOG.debug('vif_type=%(vif_type)s instance=%(instance)s ' 'vif=%(vif)s virt_type%(virt_type)s', {'vif_type': vif_type, 'instance': instance, 'vif': vif, 'virt_type': virt_type}) if vif_type is None: raise exception.NovaException( _("vif_type parameter must be present " "for this vif_driver implementation")) vif_slug = self._normalize_vif_type(vif_type) func = getattr(self, 'get_config_%s' % vif_slug, None) if not func: raise exception.NovaException( _("Unexpected vif_type=%s") % vif_type) return func(instance, vif, image_meta, inst_type, virt_type, host) def plug_bridge(self, instance, vif): """Ensure that the bridge exists, and add VIF to it.""" network = vif['network'] if (not network.get_meta('multi_host', False) and network.get_meta('should_create_bridge', False)): if network.get_meta('should_create_vlan', False): iface = CONF.vlan_interface or \ network.get_meta('bridge_interface') LOG.debug('Ensuring vlan %(vlan)s and bridge %(bridge)s', {'vlan': network.get_meta('vlan'), 'bridge': self.get_bridge_name(vif)}, instance=instance) linux_net.LinuxBridgeInterfaceDriver.ensure_vlan_bridge( network.get_meta('vlan'), self.get_bridge_name(vif), iface) else: iface = CONF.flat_interface or \ network.get_meta('bridge_interface') LOG.debug("Ensuring bridge %s", self.get_bridge_name(vif), instance=instance) linux_net.LinuxBridgeInterfaceDriver.ensure_bridge( self.get_bridge_name(vif), iface) def plug_ovs_bridge(self, instance, vif): """No manual plugging required.""" pass def _plug_bridge_with_port(self, instance, vif, port): iface_id = self.get_ovs_interfaceid(vif) br_name = self.get_br_name(vif['id']) v1_name, v2_name = self.get_veth_pair_names(vif['id']) if not linux_net.device_exists(br_name): utils.execute('brctl', 'addbr', br_name, run_as_root=True) utils.execute('brctl', 'setfd', br_name, 0, run_as_root=True) utils.execute('brctl', 'stp', br_name, 'off', run_as_root=True) utils.execute('tee', ('/sys/class/net/%s/bridge/multicast_snooping' % br_name), process_input='0', run_as_root=True, check_exit_code=[0, 1]) disv6 = '/proc/sys/net/ipv6/conf/%s/disable_ipv6' % br_name if os.path.exists(disv6): utils.execute('tee', disv6, process_input='1', run_as_root=True, check_exit_code=[0, 1]) if not linux_net.device_exists(v2_name): mtu = vif['network'].get_meta('mtu') linux_net._create_veth_pair(v1_name, v2_name, mtu) utils.execute('ip', 'link', 'set', br_name, 'up', run_as_root=True) utils.execute('brctl', 'addif', br_name, v1_name, run_as_root=True) if port == 'ovs': linux_net.create_ovs_vif_port(self.get_bridge_name(vif), v2_name, iface_id, vif['address'], instance.uuid, mtu) elif port == 'ivs': linux_net.create_ivs_vif_port(v2_name, iface_id, vif['address'], instance.uuid) def plug_ovs_hybrid(self, instance, vif): """Plug using hybrid strategy Create a per-VIF linux bridge, then link that bridge to the OVS integration bridge via a veth device, setting up the other end of the veth device just like a normal OVS port. Then boot the VIF on the linux bridge using standard libvirt mechanisms. """ self._plug_bridge_with_port(instance, vif, port='ovs') def plug_ovs(self, instance, vif): if self.get_firewall_required(vif) or vif.is_hybrid_plug_enabled(): self.plug_ovs_hybrid(instance, vif) else: self.plug_ovs_bridge(instance, vif) def plug_ivs_ethernet(self, instance, vif): iface_id = self.get_ovs_interfaceid(vif) dev = self.get_vif_devname(vif) linux_net.create_tap_dev(dev) linux_net.create_ivs_vif_port(dev, iface_id, vif['address'], instance.uuid) def plug_ivs_hybrid(self, instance, vif): """Plug using hybrid strategy (same as OVS) Create a per-VIF linux bridge, then link that bridge to the OVS integration bridge via a veth device, setting up the other end of the veth device just like a normal IVS port. Then boot the VIF on the linux bridge using standard libvirt mechanisms. """ self._plug_bridge_with_port(instance, vif, port='ivs') def plug_ivs(self, instance, vif): if self.get_firewall_required(vif) or vif.is_hybrid_plug_enabled(): self.plug_ivs_hybrid(instance, vif) else: self.plug_ivs_ethernet(instance, vif) 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: utils.execute('ebrctl', 'add-port', vnic_mac, device_id, fabric, network_model.VIF_TYPE_IB_HOSTDEV, pci_slot, run_as_root=True) except processutils.ProcessExecutionError: LOG.exception( _LE("Failed while plugging ib hostdev vif"), instance=instance ) def plug_802qbg(self, instance, vif): pass def plug_802qbh(self, instance, vif): pass def plug_hw_veb(self, instance, vif): if vif['vnic_type'] == network_model.VNIC_TYPE_MACVTAP: linux_net.set_vf_interface_vlan( vif['profile']['pci_slot'], mac_addr=vif['address'], vlan=vif['details'][network_model.VIF_DETAILS_VLAN]) 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) linux_net.LinuxBridgeInterfaceDriver.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: linux_net.create_tap_dev(dev) utils.execute('mm-ctl', '--bind-port', port_id, dev, run_as_root=True) except processutils.ProcessExecutionError: LOG.exception(_LE("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'] linux_net.create_tap_dev(dev) net_id = vif['network']['id'] tenant_id = instance.project_id try: utils.execute('ifc_ctl', 'gateway', 'add_port', dev, run_as_root=True) utils.execute('ifc_ctl', 'gateway', 'ifup', dev, 'access_vm', vif['network']['label'] + "_" + iface_id, vif['address'], 'pgtag2=%s' % net_id, 'pgtag1=%s' % tenant_id, run_as_root=True) except processutils.ProcessExecutionError: LOG.exception(_LE("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) linux_net.create_tap_dev(dev, mac) network = vif.get('network') mtu = network.get_meta('mtu') if network else None linux_net._set_device_mtu(dev, mtu) def plug_vhostuser_fp(self, instance, vif): """Create a fp netdevice interface with a vhostuser socket""" dev = self.get_vif_devname(vif) if linux_net.device_exists(dev): return ovs_plug = vif['details'].get( network_model.VIF_DETAILS_VHOSTUSER_OVS_PLUG, False) sockmode_qemu, sockpath = self._get_vhostuser_settings(vif) sockmode_port = 'client' if sockmode_qemu == 'server' else 'server' try: linux_net.create_fp_dev(dev, sockpath, sockmode_port) if ovs_plug: if vif.is_hybrid_plug_enabled(): self.plug_ovs_hybrid(instance, vif) utils.execute('brctl', 'addif', self.get_br_name(vif['id']), dev, run_as_root=True) else: iface_id = self.get_ovs_interfaceid(vif) mtu = vif['network'].get_meta('mtu') linux_net.create_ovs_vif_port(self.get_bridge_name(vif), dev, iface_id, vif['address'], instance.uuid, mtu) except processutils.ProcessExecutionError: LOG.exception(_LE("Failed while plugging vif"), instance=instance) def plug_vhostuser_ovs(self, instance, vif): """Plug a VIF_TYPE_VHOSTUSER into an ovs bridge""" iface_id = self.get_ovs_interfaceid(vif) port_name = os.path.basename( vif['details'][network_model.VIF_DETAILS_VHOSTUSER_SOCKET]) mtu = vif['network'].get_meta('mtu') linux_net.create_ovs_vif_port( self.get_bridge_name(vif), port_name, iface_id, vif['address'], instance.uuid, mtu, interface_type=network_model.OVS_VHOSTUSER_INTERFACE_TYPE) def plug_vhostuser(self, instance, vif): fp_plug = vif['details'].get( network_model.VIF_DETAILS_VHOSTUSER_FP_PLUG, False) ovs_plug = vif['details'].get( network_model.VIF_DETAILS_VHOSTUSER_OVS_PLUG, False) if fp_plug: self.plug_vhostuser_fp(instance, vif) elif ovs_plug: self.plug_vhostuser_ovs(instance, vif) def plug_vrouter(self, instance, vif): """Plug into Contrail's network port Bind the vif to a Contrail virtual port. """ dev = self.get_vif_devname(vif) ip_addr = '0.0.0.0' ip6_addr = None subnets = vif['network']['subnets'] for subnet in subnets: if not subnet['ips']: continue ips = subnet['ips'][0] if not ips['address']: continue if (ips['version'] == 4): if ips['address'] is not None: ip_addr = ips['address'] if (ips['version'] == 6): if ips['address'] is not None: ip6_addr = ips['address'] ptype = 'NovaVMPort' if (cfg.CONF.libvirt.virt_type == 'lxc'): ptype = 'NameSpacePort' cmd_args = ("--oper=add --uuid=%s --instance_uuid=%s --vn_uuid=%s " "--vm_project_uuid=%s --ip_address=%s --ipv6_address=%s" " --vm_name=%s --mac=%s --tap_name=%s --port_type=%s " "--tx_vlan_id=%d --rx_vlan_id=%d" % (vif['id'], instance.uuid, vif['network']['id'], instance.project_id, ip_addr, ip6_addr, instance.display_name, vif['address'], vif['devname'], ptype, -1, -1)) try: linux_net.create_tap_dev(dev) utils.execute('vrouter-port-control', cmd_args, run_as_root=True) except processutils.ProcessExecutionError: LOG.exception(_LE("Failed while plugging vif"), instance=instance) def plug(self, instance, vif): vif_type = vif['type'] LOG.debug('vif_type=%(vif_type)s instance=%(instance)s ' 'vif=%(vif)s', {'vif_type': vif_type, 'instance': instance, 'vif': vif}) if vif_type is None: raise exception.VirtualInterfacePlugException( _("vif_type parameter must be present " "for this vif_driver implementation")) vif_slug = self._normalize_vif_type(vif_type) func = getattr(self, 'plug_%s' % vif_slug, None) if not func: raise exception.VirtualInterfacePlugException( _("Plug vif failed because of unexpected " "vif_type=%s") % vif_type) func(instance, vif) def unplug_bridge(self, instance, vif): """No manual unplugging required.""" pass def unplug_ovs_bridge(self, instance, vif): """No manual unplugging required.""" pass def unplug_ovs_hybrid(self, instance, vif): """UnPlug using hybrid strategy Unhook port from OVS, unhook port from bridge, delete bridge, and delete both veth devices. """ try: br_name = self.get_br_name(vif['id']) v1_name, v2_name = self.get_veth_pair_names(vif['id']) if linux_net.device_exists(br_name): utils.execute('brctl', 'delif', br_name, v1_name, run_as_root=True) utils.execute('ip', 'link', 'set', br_name, 'down', run_as_root=True) utils.execute('brctl', 'delbr', br_name, run_as_root=True) linux_net.delete_ovs_vif_port(self.get_bridge_name(vif), v2_name) except processutils.ProcessExecutionError: LOG.exception(_LE("Failed while unplugging vif"), instance=instance) def unplug_ovs(self, instance, vif): if self.get_firewall_required(vif) or vif.is_hybrid_plug_enabled(): self.unplug_ovs_hybrid(instance, vif) else: self.unplug_ovs_bridge(instance, vif) def unplug_ivs_ethernet(self, instance, vif): """Unplug the VIF by deleting the port from the bridge.""" try: linux_net.delete_ivs_vif_port(self.get_vif_devname(vif)) except processutils.ProcessExecutionError: LOG.exception(_LE("Failed while unplugging vif"), instance=instance) def unplug_ivs_hybrid(self, instance, vif): """UnPlug using hybrid strategy (same as OVS) Unhook port from IVS, unhook port from bridge, delete bridge, and delete both veth devices. """ try: br_name = self.get_br_name(vif['id']) v1_name, v2_name = self.get_veth_pair_names(vif['id']) utils.execute('brctl', 'delif', br_name, v1_name, run_as_root=True) utils.execute('ip', 'link', 'set', br_name, 'down', run_as_root=True) utils.execute('brctl', 'delbr', br_name, run_as_root=True) linux_net.delete_ivs_vif_port(v2_name) except processutils.ProcessExecutionError: LOG.exception(_LE("Failed while unplugging vif"), instance=instance) def unplug_ivs(self, instance, vif): if self.get_firewall_required(vif) or vif.is_hybrid_plug_enabled(): self.unplug_ivs_hybrid(instance, vif) else: self.unplug_ivs_ethernet(instance, vif) 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: utils.execute('ebrctl', 'del-port', fabric, vnic_mac, run_as_root=True) except Exception: LOG.exception(_LE("Failed while unplugging ib hostdev vif")) def unplug_802qbg(self, instance, vif): pass def unplug_802qbh(self, instance, vif): pass def unplug_hw_veb(self, instance, vif): if vif['vnic_type'] == network_model.VNIC_TYPE_MACVTAP: # The ip utility doesn't accept the MAC 00:00:00:00:00:00. # Therefore, keep the MAC unchanged. Later operations on # the same VF will not be affected by the existing MAC. linux_net.set_vf_interface_vlan(vif['profile']['pci_slot'], mac_addr=vif['address']) def unplug_macvtap(self, instance, vif): pass 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: utils.execute('mm-ctl', '--unbind-port', port_id, run_as_root=True) linux_net.delete_net_dev(dev) except processutils.ProcessExecutionError: LOG.exception(_LE("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: linux_net.delete_net_dev(dev) except processutils.ProcessExecutionError: LOG.exception(_LE("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. """ iface_id = vif['id'] dev = self.get_vif_devname(vif) try: utils.execute('ifc_ctl', 'gateway', 'ifdown', dev, 'access_vm', vif['network']['label'] + "_" + iface_id, vif['address'], run_as_root=True) utils.execute('ifc_ctl', 'gateway', 'del_port', dev, run_as_root=True) linux_net.delete_net_dev(dev) except processutils.ProcessExecutionError: LOG.exception(_LE("Failed while unplugging vif"), instance=instance) def unplug_vhostuser_fp(self, instance, vif): """Delete a fp netdevice interface with a vhostuser socket""" dev = self.get_vif_devname(vif) ovs_plug = vif['details'].get( network_model.VIF_DETAILS_VHOSTUSER_OVS_PLUG, False) try: if ovs_plug: if vif.is_hybrid_plug_enabled(): self.unplug_ovs_hybrid(instance, vif) else: linux_net.delete_ovs_vif_port(self.get_bridge_name(vif), dev, False) linux_net.delete_fp_dev(dev) except processutils.ProcessExecutionError: LOG.exception(_LE("Failed while unplugging vif"), instance=instance) def unplug_vhostuser_ovs(self, instance, vif): """Unplug a VIF_TYPE_VHOSTUSER into an ovs bridge""" port_name = os.path.basename( vif['details'][network_model.VIF_DETAILS_VHOSTUSER_SOCKET]) linux_net.delete_ovs_vif_port(self.get_bridge_name(vif), port_name) def unplug_vhostuser(self, instance, vif): fp_plug = vif['details'].get( network_model.VIF_DETAILS_VHOSTUSER_FP_PLUG, False) ovs_plug = vif['details'].get( network_model.VIF_DETAILS_VHOSTUSER_OVS_PLUG, False) if fp_plug: self.unplug_vhostuser_fp(instance, vif) elif ovs_plug: self.unplug_vhostuser_ovs(instance, vif) def unplug_vrouter(self, instance, vif): """Unplug Contrail's network port Unbind the vif from a Contrail virtual port. """ dev = self.get_vif_devname(vif) cmd_args = ("--oper=delete --uuid=%s" % (vif['id'])) try: utils.execute('vrouter-port-control', cmd_args, run_as_root=True) linux_net.delete_net_dev(dev) except processutils.ProcessExecutionError: LOG.exception( _LE("Failed while unplugging vif"), instance=instance) def unplug(self, instance, vif): vif_type = vif['type'] LOG.debug('vif_type=%(vif_type)s instance=%(instance)s ' 'vif=%(vif)s', {'vif_type': vif_type, 'instance': instance, 'vif': vif}) if vif_type is None: raise exception.NovaException( _("vif_type parameter must be present " "for this vif_driver implementation")) vif_slug = self._normalize_vif_type(vif_type) func = getattr(self, 'unplug_%s' % vif_slug, None) if not func: raise exception.NovaException( _("Unexpected vif_type=%s") % vif_type) func(instance, vif)