74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
# 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 abc
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import six
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from kuryr_kubernetes.cni.binding import base as b_base
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from kuryr_kubernetes import config
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VLAN_KIND = 'vlan'
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MACVLAN_KIND = 'macvlan'
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MACVLAN_MODE_BRIDGE = 'bridge'
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@six.add_metaclass(abc.ABCMeta)
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class NestedDriver(object):
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@abc.abstractmethod
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def _get_iface_create_args(self, vif):
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raise NotImplementedError()
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def connect(self, vif, ifname, netns):
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with b_base.get_ipdb() as h_ipdb:
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# NOTE(vikasc): Ideally 'ifname' should be used here but instead a
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# temporary name is being used while creating the device for
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# container in host network namespace. This is because cni expects
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# only 'eth0' as interface name and if host already has an
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# interface named 'eth0', device creation will fail with 'already
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# exists' error.
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temp_name = vif.vif_name
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# TODO(vikasc): evaluate whether we should have stevedore
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# driver for getting the link device.
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vm_iface_name = config.CONF.binding.link_iface
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args = self._get_iface_create_args(vif)
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with h_ipdb.create(ifname=temp_name,
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link=h_ipdb.interfaces[vm_iface_name],
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**args) as iface:
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iface.net_ns_fd = netns
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with b_base.get_ipdb(netns) as c_ipdb:
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with c_ipdb.interfaces[temp_name] as iface:
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iface.ifname = ifname
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iface.mtu = vif.network.mtu
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iface.address = str(vif.address)
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iface.up()
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def disconnect(self, vif, ifname, netns):
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# NOTE(vikasc): device will get deleted with container namespace, so
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# nothing to be done here.
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pass
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class VlanDriver(NestedDriver):
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def _get_iface_create_args(self, vif):
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return {'kind': VLAN_KIND, 'vlan_id': vif.vlan_id}
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class MacvlanDriver(NestedDriver):
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def _get_iface_create_args(self, vif):
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return {'kind': MACVLAN_KIND, 'macvlan_mode': MACVLAN_MODE_BRIDGE}
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