ee3fe4e836
This change renames everything to Neutron while providing backwards compatible adjustments for Grizzly configuration files. implements blueprint: remove-use-of-quantum Change-Id: Ie7d07ba7c89857e13d4ddc8f0e9b68de020a3d19
386 lines
14 KiB
Python
386 lines
14 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2012 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.
|
|
|
|
import abc
|
|
|
|
import netaddr
|
|
from oslo.config import cfg
|
|
|
|
from neutron.agent.common import config
|
|
from neutron.agent.linux import ip_lib
|
|
from neutron.agent.linux import ovs_lib
|
|
from neutron.agent.linux import utils
|
|
from neutron.common import exceptions
|
|
from neutron.extensions.flavor import (FLAVOR_NETWORK)
|
|
from neutron.openstack.common import importutils
|
|
from neutron.openstack.common import log as logging
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
OPTS = [
|
|
cfg.StrOpt('ovs_integration_bridge',
|
|
default='br-int',
|
|
help=_('Name of Open vSwitch bridge to use')),
|
|
cfg.BoolOpt('ovs_use_veth',
|
|
default=False,
|
|
help=_('Uses veth for an interface or not')),
|
|
cfg.IntOpt('network_device_mtu',
|
|
help=_('MTU setting for device.')),
|
|
cfg.StrOpt('meta_flavor_driver_mappings',
|
|
help=_('Mapping between flavor and LinuxInterfaceDriver')),
|
|
cfg.StrOpt('admin_user',
|
|
help=_("Admin username")),
|
|
cfg.StrOpt('admin_password',
|
|
help=_("Admin password"),
|
|
secret=True),
|
|
cfg.StrOpt('admin_tenant_name',
|
|
help=_("Admin tenant name")),
|
|
cfg.StrOpt('auth_url',
|
|
help=_("Authentication URL")),
|
|
cfg.StrOpt('auth_strategy', default='keystone',
|
|
help=_("The type of authentication to use")),
|
|
cfg.StrOpt('auth_region',
|
|
help=_("Authentication region")),
|
|
]
|
|
|
|
|
|
class LinuxInterfaceDriver(object):
|
|
__metaclass__ = abc.ABCMeta
|
|
|
|
# from linux IF_NAMESIZE
|
|
DEV_NAME_LEN = 14
|
|
DEV_NAME_PREFIX = 'tap'
|
|
|
|
def __init__(self, conf):
|
|
self.conf = conf
|
|
self.root_helper = config.get_root_helper(conf)
|
|
|
|
def init_l3(self, device_name, ip_cidrs, namespace=None):
|
|
"""Set the L3 settings for the interface using data from the port.
|
|
|
|
ip_cidrs: list of 'X.X.X.X/YY' strings
|
|
"""
|
|
device = ip_lib.IPDevice(device_name,
|
|
self.root_helper,
|
|
namespace=namespace)
|
|
|
|
previous = {}
|
|
for address in device.addr.list(scope='global', filters=['permanent']):
|
|
previous[address['cidr']] = address['ip_version']
|
|
|
|
# add new addresses
|
|
for ip_cidr in ip_cidrs:
|
|
|
|
net = netaddr.IPNetwork(ip_cidr)
|
|
if ip_cidr in previous:
|
|
del previous[ip_cidr]
|
|
continue
|
|
|
|
device.addr.add(net.version, ip_cidr, str(net.broadcast))
|
|
|
|
# clean up any old addresses
|
|
for ip_cidr, ip_version in previous.items():
|
|
device.addr.delete(ip_version, ip_cidr)
|
|
|
|
def check_bridge_exists(self, bridge):
|
|
if not ip_lib.device_exists(bridge):
|
|
raise exceptions.BridgeDoesNotExist(bridge=bridge)
|
|
|
|
def get_device_name(self, port):
|
|
return (self.DEV_NAME_PREFIX + port.id)[:self.DEV_NAME_LEN]
|
|
|
|
@abc.abstractmethod
|
|
def plug(self, network_id, port_id, device_name, mac_address,
|
|
bridge=None, namespace=None, prefix=None):
|
|
"""Plug in the interface."""
|
|
|
|
@abc.abstractmethod
|
|
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
|
|
"""Unplug the interface."""
|
|
|
|
|
|
class NullDriver(LinuxInterfaceDriver):
|
|
def plug(self, network_id, port_id, device_name, mac_address,
|
|
bridge=None, namespace=None, prefix=None):
|
|
pass
|
|
|
|
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
|
|
pass
|
|
|
|
|
|
class OVSInterfaceDriver(LinuxInterfaceDriver):
|
|
"""Driver for creating an internal interface on an OVS bridge."""
|
|
|
|
DEV_NAME_PREFIX = 'tap'
|
|
|
|
def __init__(self, conf):
|
|
super(OVSInterfaceDriver, self).__init__(conf)
|
|
if self.conf.ovs_use_veth:
|
|
self.DEV_NAME_PREFIX = 'ns-'
|
|
|
|
def _get_tap_name(self, dev_name, prefix=None):
|
|
if self.conf.ovs_use_veth:
|
|
dev_name = dev_name.replace(prefix or self.DEV_NAME_PREFIX, 'tap')
|
|
return dev_name
|
|
|
|
def _ovs_add_port(self, bridge, device_name, port_id, mac_address,
|
|
internal=True):
|
|
cmd = ['ovs-vsctl', '--', '--may-exist',
|
|
'add-port', bridge, device_name]
|
|
if internal:
|
|
cmd += ['--', 'set', 'Interface', device_name, 'type=internal']
|
|
cmd += ['--', 'set', 'Interface', device_name,
|
|
'external-ids:iface-id=%s' % port_id,
|
|
'--', 'set', 'Interface', device_name,
|
|
'external-ids:iface-status=active',
|
|
'--', 'set', 'Interface', device_name,
|
|
'external-ids:attached-mac=%s' % mac_address]
|
|
utils.execute(cmd, self.root_helper)
|
|
|
|
def plug(self, network_id, port_id, device_name, mac_address,
|
|
bridge=None, namespace=None, prefix=None):
|
|
"""Plug in the interface."""
|
|
if not bridge:
|
|
bridge = self.conf.ovs_integration_bridge
|
|
|
|
self.check_bridge_exists(bridge)
|
|
|
|
if not ip_lib.device_exists(device_name,
|
|
self.root_helper,
|
|
namespace=namespace):
|
|
|
|
ip = ip_lib.IPWrapper(self.root_helper)
|
|
tap_name = self._get_tap_name(device_name, prefix)
|
|
|
|
if self.conf.ovs_use_veth:
|
|
# Create ns_dev in a namespace if one is configured.
|
|
root_dev, ns_dev = ip.add_veth(tap_name,
|
|
device_name,
|
|
namespace2=namespace)
|
|
else:
|
|
ns_dev = ip.device(device_name)
|
|
|
|
internal = not self.conf.ovs_use_veth
|
|
self._ovs_add_port(bridge, tap_name, port_id, mac_address,
|
|
internal=internal)
|
|
|
|
ns_dev.link.set_address(mac_address)
|
|
|
|
if self.conf.network_device_mtu:
|
|
ns_dev.link.set_mtu(self.conf.network_device_mtu)
|
|
if self.conf.ovs_use_veth:
|
|
root_dev.link.set_mtu(self.conf.network_device_mtu)
|
|
|
|
# Add an interface created by ovs to the namespace.
|
|
if not self.conf.ovs_use_veth and namespace:
|
|
namespace_obj = ip.ensure_namespace(namespace)
|
|
namespace_obj.add_device_to_namespace(ns_dev)
|
|
|
|
ns_dev.link.set_up()
|
|
if self.conf.ovs_use_veth:
|
|
root_dev.link.set_up()
|
|
else:
|
|
LOG.warn(_("Device %s already exists"), device_name)
|
|
|
|
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
|
|
"""Unplug the interface."""
|
|
if not bridge:
|
|
bridge = self.conf.ovs_integration_bridge
|
|
|
|
tap_name = self._get_tap_name(device_name, prefix)
|
|
self.check_bridge_exists(bridge)
|
|
ovs = ovs_lib.OVSBridge(bridge, self.root_helper)
|
|
|
|
try:
|
|
ovs.delete_port(tap_name)
|
|
if self.conf.ovs_use_veth:
|
|
device = ip_lib.IPDevice(device_name,
|
|
self.root_helper,
|
|
namespace)
|
|
device.link.delete()
|
|
LOG.debug(_("Unplugged interface '%s'"), device_name)
|
|
except RuntimeError:
|
|
LOG.error(_("Failed unplugging interface '%s'"),
|
|
device_name)
|
|
|
|
|
|
class IVSInterfaceDriver(LinuxInterfaceDriver):
|
|
"""Driver for creating an internal interface on an IVS bridge."""
|
|
|
|
DEV_NAME_PREFIX = 'tap'
|
|
|
|
def __init__(self, conf):
|
|
super(IVSInterfaceDriver, self).__init__(conf)
|
|
self.DEV_NAME_PREFIX = 'ns-'
|
|
|
|
def _get_tap_name(self, dev_name, prefix=None):
|
|
dev_name = dev_name.replace(prefix or self.DEV_NAME_PREFIX, 'tap')
|
|
return dev_name
|
|
|
|
def _ivs_add_port(self, device_name, port_id, mac_address):
|
|
cmd = ['ivs-ctl', 'add-port', device_name]
|
|
utils.execute(cmd, self.root_helper)
|
|
|
|
def plug(self, network_id, port_id, device_name, mac_address,
|
|
bridge=None, namespace=None, prefix=None):
|
|
"""Plug in the interface."""
|
|
if not ip_lib.device_exists(device_name,
|
|
self.root_helper,
|
|
namespace=namespace):
|
|
|
|
ip = ip_lib.IPWrapper(self.root_helper)
|
|
tap_name = self._get_tap_name(device_name, prefix)
|
|
|
|
root_dev, ns_dev = ip.add_veth(tap_name, device_name)
|
|
|
|
self._ivs_add_port(tap_name, port_id, mac_address)
|
|
|
|
ns_dev = ip.device(device_name)
|
|
ns_dev.link.set_address(mac_address)
|
|
|
|
if self.conf.network_device_mtu:
|
|
ns_dev.link.set_mtu(self.conf.network_device_mtu)
|
|
root_dev.link.set_mtu(self.conf.network_device_mtu)
|
|
|
|
if namespace:
|
|
namespace_obj = ip.ensure_namespace(namespace)
|
|
namespace_obj.add_device_to_namespace(ns_dev)
|
|
|
|
ns_dev.link.set_up()
|
|
root_dev.link.set_up()
|
|
else:
|
|
LOG.warn(_("Device %s already exists"), device_name)
|
|
|
|
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
|
|
"""Unplug the interface."""
|
|
tap_name = self._get_tap_name(device_name, prefix)
|
|
try:
|
|
cmd = ['ivs-ctl', 'del-port', tap_name]
|
|
utils.execute(cmd, self.root_helper)
|
|
device = ip_lib.IPDevice(device_name,
|
|
self.root_helper,
|
|
namespace)
|
|
device.link.delete()
|
|
LOG.debug(_("Unplugged interface '%s'"), device_name)
|
|
except RuntimeError:
|
|
LOG.error(_("Failed unplugging interface '%s'"),
|
|
device_name)
|
|
|
|
|
|
class BridgeInterfaceDriver(LinuxInterfaceDriver):
|
|
"""Driver for creating bridge interfaces."""
|
|
|
|
DEV_NAME_PREFIX = 'ns-'
|
|
|
|
def plug(self, network_id, port_id, device_name, mac_address,
|
|
bridge=None, namespace=None, prefix=None):
|
|
"""Plugin the interface."""
|
|
if not ip_lib.device_exists(device_name,
|
|
self.root_helper,
|
|
namespace=namespace):
|
|
ip = ip_lib.IPWrapper(self.root_helper)
|
|
|
|
# Enable agent to define the prefix
|
|
if prefix:
|
|
tap_name = device_name.replace(prefix, 'tap')
|
|
else:
|
|
tap_name = device_name.replace(self.DEV_NAME_PREFIX, 'tap')
|
|
# Create ns_veth in a namespace if one is configured.
|
|
root_veth, ns_veth = ip.add_veth(tap_name, device_name,
|
|
namespace2=namespace)
|
|
ns_veth.link.set_address(mac_address)
|
|
|
|
if self.conf.network_device_mtu:
|
|
root_veth.link.set_mtu(self.conf.network_device_mtu)
|
|
ns_veth.link.set_mtu(self.conf.network_device_mtu)
|
|
|
|
root_veth.link.set_up()
|
|
ns_veth.link.set_up()
|
|
|
|
else:
|
|
LOG.warn(_("Device %s already exists"), device_name)
|
|
|
|
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
|
|
"""Unplug the interface."""
|
|
device = ip_lib.IPDevice(device_name, self.root_helper, namespace)
|
|
try:
|
|
device.link.delete()
|
|
LOG.debug(_("Unplugged interface '%s'"), device_name)
|
|
except RuntimeError:
|
|
LOG.error(_("Failed unplugging interface '%s'"),
|
|
device_name)
|
|
|
|
|
|
class MetaInterfaceDriver(LinuxInterfaceDriver):
|
|
def __init__(self, conf):
|
|
super(MetaInterfaceDriver, self).__init__(conf)
|
|
from neutronclient.v2_0 import client
|
|
self.neutron = client.Client(
|
|
username=self.conf.admin_user,
|
|
password=self.conf.admin_password,
|
|
tenant_name=self.conf.admin_tenant_name,
|
|
auth_url=self.conf.auth_url,
|
|
auth_strategy=self.conf.auth_strategy,
|
|
auth_region=self.conf.auth_region
|
|
)
|
|
self.flavor_driver_map = {}
|
|
for flavor, driver_name in [
|
|
driver_set.split(':')
|
|
for driver_set in
|
|
self.conf.meta_flavor_driver_mappings.split(',')]:
|
|
self.flavor_driver_map[flavor] = self._load_driver(driver_name)
|
|
|
|
def _get_flavor_by_network_id(self, network_id):
|
|
network = self.neutron.show_network(network_id)
|
|
return network['network'][FLAVOR_NETWORK]
|
|
|
|
def _get_driver_by_network_id(self, network_id):
|
|
flavor = self._get_flavor_by_network_id(network_id)
|
|
return self.flavor_driver_map[flavor]
|
|
|
|
def _set_device_plugin_tag(self, network_id, device_name, namespace=None):
|
|
plugin_tag = self._get_flavor_by_network_id(network_id)
|
|
device = ip_lib.IPDevice(device_name, self.conf.root_helper, namespace)
|
|
device.link.set_alias(plugin_tag)
|
|
|
|
def _get_device_plugin_tag(self, device_name, namespace=None):
|
|
device = ip_lib.IPDevice(device_name, self.conf.root_helper, namespace)
|
|
return device.link.alias
|
|
|
|
def get_device_name(self, port):
|
|
driver = self._get_driver_by_network_id(port.network_id)
|
|
return driver.get_device_name(port)
|
|
|
|
def plug(self, network_id, port_id, device_name, mac_address,
|
|
bridge=None, namespace=None, prefix=None):
|
|
driver = self._get_driver_by_network_id(network_id)
|
|
ret = driver.plug(network_id, port_id, device_name, mac_address,
|
|
bridge=bridge, namespace=namespace, prefix=prefix)
|
|
self._set_device_plugin_tag(network_id, device_name, namespace)
|
|
return ret
|
|
|
|
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
|
|
plugin_tag = self._get_device_plugin_tag(device_name, namespace)
|
|
driver = self.flavor_driver_map[plugin_tag]
|
|
return driver.unplug(device_name, bridge, namespace, prefix)
|
|
|
|
def _load_driver(self, driver_provider):
|
|
LOG.debug(_("Driver location: %s"), driver_provider)
|
|
plugin_klass = importutils.import_class(driver_provider)
|
|
return plugin_klass(self.conf)
|