d239c85197
The following patch adds the concept of allowed address pairs. This allows one to add additional ip/mac address pairs on a port to allow traffic that matches those specified values. This is useful in order to leverage dataplane failover mechanisms like vrrp. This patch adds support for the NVP plugin, the OVS plugin, and Ml2. DocImpact implements blueprint: allowed-address-pairs Change-Id: Ie73b3886c5be8e1fc4ade86a0cfb854267f345ac
540 lines
24 KiB
Python
540 lines
24 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
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# 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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from oslo.config import cfg
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from neutron.agent import securitygroups_rpc as sg_rpc
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from neutron.api.rpc.agentnotifiers import dhcp_rpc_agent_api
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from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
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from neutron.api.v2 import attributes
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from neutron.common import constants as const
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from neutron.common import exceptions as exc
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from neutron.common import topics
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from neutron.db import agentschedulers_db
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from neutron.db import allowedaddresspairs_db as addr_pair_db
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from neutron.db import db_base_plugin_v2
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from neutron.db import extraroute_db
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from neutron.db import l3_gwmode_db
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from neutron.db import models_v2
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from neutron.db import quota_db # noqa
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from neutron.db import securitygroups_rpc_base as sg_db_rpc
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from neutron.extensions import allowedaddresspairs as addr_pair
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from neutron.extensions import multiprovidernet as mpnet
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from neutron.extensions import portbindings
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from neutron.extensions import providernet as provider
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from neutron.openstack.common import excutils
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from neutron.openstack.common import importutils
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from neutron.openstack.common import log
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from neutron.openstack.common import rpc as c_rpc
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from neutron.plugins.ml2.common import exceptions as ml2_exc
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from neutron.plugins.ml2 import config # noqa
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from neutron.plugins.ml2 import db
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from neutron.plugins.ml2 import driver_api as api
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from neutron.plugins.ml2 import driver_context
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from neutron.plugins.ml2 import managers
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from neutron.plugins.ml2 import models
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from neutron.plugins.ml2 import rpc
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LOG = log.getLogger(__name__)
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# REVISIT(rkukura): Move this and other network_type constants to
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# providernet.py?
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TYPE_MULTI_SEGMENT = 'multi-segment'
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class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
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extraroute_db.ExtraRoute_db_mixin,
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l3_gwmode_db.L3_NAT_db_mixin,
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sg_db_rpc.SecurityGroupServerRpcMixin,
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agentschedulers_db.L3AgentSchedulerDbMixin,
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agentschedulers_db.DhcpAgentSchedulerDbMixin,
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addr_pair_db.AllowedAddressPairsMixin):
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"""Implement the Neutron L2 abstractions using modules.
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Ml2Plugin is a Neutron plugin based on separately extensible sets
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of network types and mechanisms for connecting to networks of
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those types. The network types and mechanisms are implemented as
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drivers loaded via Python entry points. Networks can be made up of
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multiple segments (not yet fully implemented).
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"""
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# This attribute specifies whether the plugin supports or not
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# bulk/pagination/sorting operations. Name mangling is used in
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# order to ensure it is qualified by class
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__native_bulk_support = True
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__native_pagination_support = True
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__native_sorting_support = True
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# List of supported extensions
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_supported_extension_aliases = ["provider", "router", "extraroute",
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"binding", "quotas", "security-group",
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"agent", "l3_agent_scheduler",
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"dhcp_agent_scheduler", "ext-gw-mode",
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"multi-provider", "allowed-address-pairs"]
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@property
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def supported_extension_aliases(self):
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if not hasattr(self, '_aliases'):
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aliases = self._supported_extension_aliases[:]
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sg_rpc.disable_security_group_extension_if_noop_driver(aliases)
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self._aliases = aliases
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return self._aliases
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def __init__(self):
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# First load drivers, then initialize DB, then initialize drivers
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self.type_manager = managers.TypeManager()
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self.mechanism_manager = managers.MechanismManager()
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db.initialize()
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self.type_manager.initialize()
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self.mechanism_manager.initialize()
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self._setup_rpc()
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# REVISIT(rkukura): Use stevedore for these?
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self.network_scheduler = importutils.import_object(
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cfg.CONF.network_scheduler_driver
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)
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self.router_scheduler = importutils.import_object(
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cfg.CONF.router_scheduler_driver
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)
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LOG.info(_("Modular L2 Plugin initialization complete"))
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def _setup_rpc(self):
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self.notifier = rpc.AgentNotifierApi(topics.AGENT)
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self.agent_notifiers[const.AGENT_TYPE_DHCP] = (
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dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
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)
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self.agent_notifiers[const.AGENT_TYPE_L3] = (
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l3_rpc_agent_api.L3AgentNotify
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)
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self.callbacks = rpc.RpcCallbacks(self.notifier, self.type_manager)
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self.topic = topics.PLUGIN
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self.conn = c_rpc.create_connection(new=True)
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self.dispatcher = self.callbacks.create_rpc_dispatcher()
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self.conn.create_consumer(self.topic, self.dispatcher,
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fanout=False)
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self.conn.consume_in_thread()
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def _process_provider_segment(self, segment):
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network_type = self._get_attribute(segment, provider.NETWORK_TYPE)
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physical_network = self._get_attribute(segment,
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provider.PHYSICAL_NETWORK)
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segmentation_id = self._get_attribute(segment,
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provider.SEGMENTATION_ID)
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if attributes.is_attr_set(network_type):
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segment = {api.NETWORK_TYPE: network_type,
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api.PHYSICAL_NETWORK: physical_network,
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api.SEGMENTATION_ID: segmentation_id}
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self.type_manager.validate_provider_segment(segment)
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return segment
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msg = _("network_type required")
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raise exc.InvalidInput(error_message=msg)
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def _process_provider_create(self, network):
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segments = []
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if any(attributes.is_attr_set(network.get(f))
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for f in (provider.NETWORK_TYPE, provider.PHYSICAL_NETWORK,
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provider.SEGMENTATION_ID)):
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# Verify that multiprovider and provider attributes are not set
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# at the same time.
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if attributes.is_attr_set(network.get(mpnet.SEGMENTS)):
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raise mpnet.SegmentsSetInConjunctionWithProviders()
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network_type = self._get_attribute(network, provider.NETWORK_TYPE)
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physical_network = self._get_attribute(network,
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provider.PHYSICAL_NETWORK)
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segmentation_id = self._get_attribute(network,
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provider.SEGMENTATION_ID)
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segments = [{provider.NETWORK_TYPE: network_type,
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provider.PHYSICAL_NETWORK: physical_network,
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provider.SEGMENTATION_ID: segmentation_id}]
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elif attributes.is_attr_set(network.get(mpnet.SEGMENTS)):
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segments = network[mpnet.SEGMENTS]
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else:
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return
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return [self._process_provider_segment(s) for s in segments]
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def _get_attribute(self, attrs, key):
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value = attrs.get(key)
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if value is attributes.ATTR_NOT_SPECIFIED:
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value = None
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return value
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def _extend_network_dict_provider(self, context, network):
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id = network['id']
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segments = db.get_network_segments(context.session, id)
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if not segments:
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LOG.error(_("Network %s has no segments"), id)
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network[provider.NETWORK_TYPE] = None
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network[provider.PHYSICAL_NETWORK] = None
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network[provider.SEGMENTATION_ID] = None
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elif len(segments) > 1:
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network[mpnet.SEGMENTS] = [
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{provider.NETWORK_TYPE: segment[api.NETWORK_TYPE],
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provider.PHYSICAL_NETWORK: segment[api.PHYSICAL_NETWORK],
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provider.SEGMENTATION_ID: segment[api.SEGMENTATION_ID]}
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for segment in segments]
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else:
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segment = segments[0]
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network[provider.NETWORK_TYPE] = segment[api.NETWORK_TYPE]
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network[provider.PHYSICAL_NETWORK] = segment[api.PHYSICAL_NETWORK]
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network[provider.SEGMENTATION_ID] = segment[api.SEGMENTATION_ID]
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def _filter_nets_provider(self, context, nets, filters):
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# TODO(rkukura): Implement filtering.
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return nets
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def _process_port_binding(self, mech_context, attrs):
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binding = mech_context._binding
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port = mech_context.current
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self._update_port_dict_binding(port, binding)
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host = attrs and attrs.get(portbindings.HOST_ID)
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host_set = attributes.is_attr_set(host)
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if binding.vif_type != portbindings.VIF_TYPE_UNBOUND:
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if (not host_set and binding.segment and
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self.mechanism_manager.validate_port_binding(mech_context)):
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return False
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self.mechanism_manager.unbind_port(mech_context)
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self._update_port_dict_binding(port, binding)
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if host_set:
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binding.host = host
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port[portbindings.HOST_ID] = host
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if binding.host:
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self.mechanism_manager.bind_port(mech_context)
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self._update_port_dict_binding(port, binding)
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return True
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def _update_port_dict_binding(self, port, binding):
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port[portbindings.HOST_ID] = binding.host
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port[portbindings.VIF_TYPE] = binding.vif_type
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port[portbindings.CAPABILITIES] = {
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portbindings.CAP_PORT_FILTER: binding.cap_port_filter}
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def _delete_port_binding(self, mech_context):
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binding = mech_context._binding
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port = mech_context.current
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self._update_port_dict_binding(port, binding)
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self.mechanism_manager.unbind_port(mech_context)
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self._update_port_dict_binding(port, binding)
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def _extend_port_dict_binding(self, port_res, port_db):
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# None when called during unit tests for other plugins.
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if port_db.port_binding:
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self._update_port_dict_binding(port_res, port_db.port_binding)
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db_base_plugin_v2.NeutronDbPluginV2.register_dict_extend_funcs(
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attributes.PORTS, [_extend_port_dict_binding])
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# Note - The following hook methods have "ml2" in their names so
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# that they are not called twice during unit tests due to global
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# registration of hooks in portbindings_db.py used by other
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# plugins.
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def _ml2_port_model_hook(self, context, original_model, query):
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query = query.outerjoin(models.PortBinding,
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(original_model.id ==
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models.PortBinding.port_id))
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return query
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def _ml2_port_result_filter_hook(self, query, filters):
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values = filters and filters.get(portbindings.HOST_ID, [])
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if not values:
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return query
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return query.filter(models.PortBinding.host.in_(values))
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db_base_plugin_v2.NeutronDbPluginV2.register_model_query_hook(
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models_v2.Port,
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"ml2_port_bindings",
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'_ml2_port_model_hook',
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None,
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'_ml2_port_result_filter_hook')
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def _notify_port_updated(self, mech_context):
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port = mech_context._port
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segment = mech_context.bound_segment
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if not segment:
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# REVISIT(rkukura): This should notify agent to unplug port
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network = mech_context.network.current
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LOG.warning(_("In _notify_port_updated(), no bound segment for "
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"port %(port_id)s on network %(network_id)s"),
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{'port_id': port['id'],
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'network_id': network['id']})
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return
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self.notifier.port_update(mech_context._plugin_context, port,
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segment[api.NETWORK_TYPE],
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segment[api.SEGMENTATION_ID],
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segment[api.PHYSICAL_NETWORK])
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# TODO(apech): Need to override bulk operations
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def create_network(self, context, network):
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net_data = network['network']
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segments = self._process_provider_create(net_data)
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tenant_id = self._get_tenant_id_for_create(context, net_data)
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session = context.session
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with session.begin(subtransactions=True):
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self._ensure_default_security_group(context, tenant_id)
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result = super(Ml2Plugin, self).create_network(context, network)
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network_id = result['id']
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self._process_l3_create(context, result, net_data)
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# REVISIT(rkukura): Consider moving all segment management
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# to TypeManager.
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if segments:
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for segment in segments:
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self.type_manager.reserve_provider_segment(session,
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segment)
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db.add_network_segment(session, network_id, segment)
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else:
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segment = self.type_manager.allocate_tenant_segment(session)
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db.add_network_segment(session, network_id, segment)
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self._extend_network_dict_provider(context, result)
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mech_context = driver_context.NetworkContext(self, context,
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result)
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self.mechanism_manager.create_network_precommit(mech_context)
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try:
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self.mechanism_manager.create_network_postcommit(mech_context)
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except ml2_exc.MechanismDriverError:
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with excutils.save_and_reraise_exception():
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LOG.error(_("mechanism_manager.create_network failed, "
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"deleting network '%s'"), result['id'])
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self.delete_network(context, result['id'])
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return result
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def update_network(self, context, id, network):
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provider._raise_if_updates_provider_attributes(network['network'])
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session = context.session
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with session.begin(subtransactions=True):
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original_network = super(Ml2Plugin, self).get_network(context, id)
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updated_network = super(Ml2Plugin, self).update_network(context,
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id,
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network)
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self._process_l3_update(context, updated_network,
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network['network'])
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self._extend_network_dict_provider(context, updated_network)
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mech_context = driver_context.NetworkContext(
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self, context, updated_network,
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original_network=original_network)
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self.mechanism_manager.update_network_precommit(mech_context)
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# TODO(apech) - handle errors raised by update_network, potentially
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# by re-calling update_network with the previous attributes. For
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# now the error is propogated to the caller, which is expected to
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# either undo/retry the operation or delete the resource.
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self.mechanism_manager.update_network_postcommit(mech_context)
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return updated_network
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def get_network(self, context, id, fields=None):
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session = context.session
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with session.begin(subtransactions=True):
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result = super(Ml2Plugin, self).get_network(context, id, None)
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self._extend_network_dict_provider(context, result)
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return self._fields(result, fields)
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def get_networks(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None, page_reverse=False):
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session = context.session
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with session.begin(subtransactions=True):
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nets = super(Ml2Plugin,
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self).get_networks(context, filters, None, sorts,
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limit, marker, page_reverse)
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for net in nets:
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self._extend_network_dict_provider(context, net)
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nets = self._filter_nets_provider(context, nets, filters)
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nets = self._filter_nets_l3(context, nets, filters)
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return [self._fields(net, fields) for net in nets]
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def delete_network(self, context, id):
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session = context.session
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with session.begin(subtransactions=True):
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network = self.get_network(context, id)
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mech_context = driver_context.NetworkContext(self, context,
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network)
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self.mechanism_manager.delete_network_precommit(mech_context)
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super(Ml2Plugin, self).delete_network(context, id)
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for segment in mech_context.network_segments:
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self.type_manager.release_segment(session, segment)
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# The segment records are deleted via cascade from the
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# network record, so explicit removal is not necessary.
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try:
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self.mechanism_manager.delete_network_postcommit(mech_context)
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except ml2_exc.MechanismDriverError:
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# TODO(apech) - One or more mechanism driver failed to
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# delete the network. Ideally we'd notify the caller of
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# the fact that an error occurred.
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pass
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self.notifier.network_delete(context, id)
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def create_subnet(self, context, subnet):
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session = context.session
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with session.begin(subtransactions=True):
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result = super(Ml2Plugin, self).create_subnet(context, subnet)
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mech_context = driver_context.SubnetContext(self, context, result)
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self.mechanism_manager.create_subnet_precommit(mech_context)
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try:
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self.mechanism_manager.create_subnet_postcommit(mech_context)
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except ml2_exc.MechanismDriverError:
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with excutils.save_and_reraise_exception():
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LOG.error(_("mechanism_manager.create_subnet failed, "
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"deleting subnet '%s'"), result['id'])
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self.delete_subnet(context, result['id'])
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return result
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def update_subnet(self, context, id, subnet):
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session = context.session
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with session.begin(subtransactions=True):
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original_subnet = super(Ml2Plugin, self).get_subnet(context, id)
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updated_subnet = super(Ml2Plugin, self).update_subnet(
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context, id, subnet)
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mech_context = driver_context.SubnetContext(
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self, context, updated_subnet, original_subnet=original_subnet)
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self.mechanism_manager.update_subnet_precommit(mech_context)
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# TODO(apech) - handle errors raised by update_subnet, potentially
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# by re-calling update_subnet with the previous attributes. For
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# now the error is propogated to the caller, which is expected to
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# either undo/retry the operation or delete the resource.
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self.mechanism_manager.update_subnet_postcommit(mech_context)
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return updated_subnet
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def delete_subnet(self, context, id):
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session = context.session
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with session.begin(subtransactions=True):
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subnet = self.get_subnet(context, id)
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mech_context = driver_context.SubnetContext(self, context, subnet)
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self.mechanism_manager.delete_subnet_precommit(mech_context)
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super(Ml2Plugin, self).delete_subnet(context, id)
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try:
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self.mechanism_manager.delete_subnet_postcommit(mech_context)
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except ml2_exc.MechanismDriverError:
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# TODO(apech) - One or more mechanism driver failed to
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# delete the subnet. Ideally we'd notify the caller of
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# the fact that an error occurred.
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pass
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def create_port(self, context, port):
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attrs = port['port']
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|
attrs['status'] = const.PORT_STATUS_DOWN
|
|
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
self._ensure_default_security_group_on_port(context, port)
|
|
sgids = self._get_security_groups_on_port(context, port)
|
|
result = super(Ml2Plugin, self).create_port(context, port)
|
|
self._process_port_create_security_group(context, result, sgids)
|
|
network = self.get_network(context, result['network_id'])
|
|
mech_context = driver_context.PortContext(self, context, result,
|
|
network)
|
|
self._process_port_binding(mech_context, attrs)
|
|
result[addr_pair.ADDRESS_PAIRS] = (
|
|
self._process_create_allowed_address_pairs(
|
|
context, result,
|
|
attrs.get(addr_pair.ADDRESS_PAIRS)))
|
|
self.mechanism_manager.create_port_precommit(mech_context)
|
|
|
|
try:
|
|
self.mechanism_manager.create_port_postcommit(mech_context)
|
|
except ml2_exc.MechanismDriverError:
|
|
with excutils.save_and_reraise_exception():
|
|
LOG.error(_("mechanism_manager.create_port failed, "
|
|
"deleting port '%s'"), result['id'])
|
|
self.delete_port(context, result['id'])
|
|
self.notify_security_groups_member_updated(context, result)
|
|
return result
|
|
|
|
def update_port(self, context, id, port):
|
|
attrs = port['port']
|
|
need_port_update_notify = False
|
|
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
original_port = super(Ml2Plugin, self).get_port(context, id)
|
|
updated_port = super(Ml2Plugin, self).update_port(context, id,
|
|
port)
|
|
if addr_pair.ADDRESS_PAIRS in port['port']:
|
|
self._delete_allowed_address_pairs(context, id)
|
|
self._process_create_allowed_address_pairs(
|
|
context, updated_port,
|
|
port['port'][addr_pair.ADDRESS_PAIRS])
|
|
need_port_update_notify = True
|
|
need_port_update_notify |= self.update_security_group_on_port(
|
|
context, id, port, original_port, updated_port)
|
|
network = self.get_network(context, original_port['network_id'])
|
|
mech_context = driver_context.PortContext(
|
|
self, context, updated_port, network,
|
|
original_port=original_port)
|
|
need_port_update_notify |= self._process_port_binding(
|
|
mech_context, attrs)
|
|
self.mechanism_manager.update_port_precommit(mech_context)
|
|
|
|
# TODO(apech) - handle errors raised by update_port, potentially
|
|
# by re-calling update_port with the previous attributes. For
|
|
# now the error is propogated to the caller, which is expected to
|
|
# either undo/retry the operation or delete the resource.
|
|
self.mechanism_manager.update_port_postcommit(mech_context)
|
|
|
|
need_port_update_notify |= self.is_security_group_member_updated(
|
|
context, original_port, updated_port)
|
|
|
|
if original_port['admin_state_up'] != updated_port['admin_state_up']:
|
|
need_port_update_notify = True
|
|
|
|
if need_port_update_notify:
|
|
self._notify_port_updated(mech_context)
|
|
|
|
return updated_port
|
|
|
|
def delete_port(self, context, id, l3_port_check=True):
|
|
if l3_port_check:
|
|
self.prevent_l3_port_deletion(context, id)
|
|
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
self.disassociate_floatingips(context, id)
|
|
port = self.get_port(context, id)
|
|
network = self.get_network(context, port['network_id'])
|
|
mech_context = driver_context.PortContext(self, context, port,
|
|
network)
|
|
self._delete_port_binding(mech_context)
|
|
self.mechanism_manager.delete_port_precommit(mech_context)
|
|
self._delete_port_security_group_bindings(context, id)
|
|
super(Ml2Plugin, self).delete_port(context, id)
|
|
|
|
try:
|
|
self.mechanism_manager.delete_port_postcommit(mech_context)
|
|
except ml2_exc.MechanismDriverError:
|
|
# TODO(apech) - One or more mechanism driver failed to
|
|
# delete the port. Ideally we'd notify the caller of the
|
|
# fact that an error occurred.
|
|
pass
|
|
self.notify_security_groups_member_updated(context, port)
|