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OpenStack Study: mlnx_plugin.py**** CubicPower OpenStack Study ****
# vim: tabstop=4 shiftwidth=4 softtabstop=4 # # Copyright 2013 Mellanox Technologies, Ltd # # 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 sys from oslo.config import cfg from neutron.agent import securitygroups_rpc as sg_rpc from neutron.api.rpc.agentnotifiers import dhcp_rpc_agent_api from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api from neutron.api.v2 import attributes from neutron.common import constants as q_const from neutron.common import exceptions as n_exc from neutron.common import topics from neutron.common import utils from neutron.db import agentschedulers_db from neutron.db import db_base_plugin_v2 from neutron.db import external_net_db from neutron.db import extraroute_db from neutron.db import l3_agentschedulers_db from neutron.db import l3_gwmode_db from neutron.db import portbindings_db from neutron.db import quota_db # noqa from neutron.db import securitygroups_rpc_base as sg_db_rpc from neutron.extensions import portbindings from neutron.extensions import providernet as provider from neutron.openstack.common import importutils from neutron.openstack.common import log as logging from neutron.openstack.common import rpc from neutron.plugins.common import constants as svc_constants from neutron.plugins.common import utils as plugin_utils from neutron.plugins.mlnx import agent_notify_api from neutron.plugins.mlnx.common import constants from neutron.plugins.mlnx.db import mlnx_db_v2 as db from neutron.plugins.mlnx import rpc_callbacks LOG = logging.getLogger(__name__)
**** CubicPower OpenStack Study **** class MellanoxEswitchPlugin(db_base_plugin_v2.NeutronDbPluginV2,
external_net_db.External_net_db_mixin,
extraroute_db.ExtraRoute_db_mixin,
l3_gwmode_db.L3_NAT_db_mixin,
sg_db_rpc.SecurityGroupServerRpcMixin,
l3_agentschedulers_db.L3AgentSchedulerDbMixin,
agentschedulers_db.DhcpAgentSchedulerDbMixin,
portbindings_db.PortBindingMixin): """Realization of Neutron API on Mellanox HCA embedded switch technology. Current plugin provides embedded HCA Switch connectivity. Code is based on the Linux Bridge plugin content to support consistency with L3 & DHCP Agents. A new VLAN is created for each network. An agent is relied upon to perform the actual HCA configuration on each host. The provider extension is also supported. The port binding extension enables an external application relay information to and from the plugin. """ # This attribute specifies whether the plugin supports or not # bulk operations. Name mangling is used in order to ensure it # is qualified by class __native_bulk_support = True _supported_extension_aliases = ["provider", "external-net", "router", "ext-gw-mode", "binding", "quotas", "security-group", "agent", "extraroute", "l3_agent_scheduler", "dhcp_agent_scheduler"] @property
**** CubicPower OpenStack Study **** def supported_extension_aliases(self): if not hasattr(self, '_aliases'): aliases = self._supported_extension_aliases[:] sg_rpc.disable_security_group_extension_by_config(aliases) self._aliases = aliases return self._aliases
**** CubicPower OpenStack Study **** def __init__(self): """Start Mellanox Neutron Plugin.""" super(MellanoxEswitchPlugin, self).__init__() self._parse_network_config() db.sync_network_states(self.network_vlan_ranges) self._set_tenant_network_type() self.vnic_type = cfg.CONF.ESWITCH.vnic_type self.base_binding_dict = { portbindings.VIF_TYPE: self.vnic_type, portbindings.VIF_DETAILS: { # TODO(rkukura): Replace with new VIF security details portbindings.CAP_PORT_FILTER: 'security-group' in self.supported_extension_aliases}} self._setup_rpc() self.network_scheduler = importutils.import_object( cfg.CONF.network_scheduler_driver ) self.router_scheduler = importutils.import_object( cfg.CONF.router_scheduler_driver ) LOG.debug(_("Mellanox Embedded Switch Plugin initialisation complete"))
**** CubicPower OpenStack Study **** def _setup_rpc(self): # RPC support self.service_topics = {svc_constants.CORE: topics.PLUGIN, svc_constants.L3_ROUTER_NAT: topics.L3PLUGIN} self.conn = rpc.create_connection(new=True) self.callbacks = rpc_callbacks.MlnxRpcCallbacks() self.dispatcher = self.callbacks.create_rpc_dispatcher() for svc_topic in self.service_topics.values(): self.conn.create_consumer(svc_topic, self.dispatcher, fanout=False) # Consume from all consumers in a thread self.conn.consume_in_thread() self.notifier = agent_notify_api.AgentNotifierApi(topics.AGENT) self.agent_notifiers[q_const.AGENT_TYPE_DHCP] = ( dhcp_rpc_agent_api.DhcpAgentNotifyAPI() ) self.agent_notifiers[q_const.AGENT_TYPE_L3] = ( l3_rpc_agent_api.L3AgentNotify )
**** CubicPower OpenStack Study **** def _parse_network_config(self): self._parse_physical_network_types() self._parse_network_vlan_ranges() for network in self.network_vlan_ranges.keys(): if not self.phys_network_type_maps.get(network): self.phys_network_type_maps[network] = self.physical_net_type
**** CubicPower OpenStack Study **** def _parse_physical_network_types(self): """Parse physical network types configuration. Verify default physical network type is valid. Parse physical network mappings. """ self.physical_net_type = cfg.CONF.MLNX.physical_network_type if self.physical_net_type not in (constants.TYPE_ETH, constants.TYPE_IB): LOG.error(_("Invalid physical network type %(type)s." "Server terminated!"), {'type': self.physical_net_type}) raise SystemExit(1) try: self.phys_network_type_maps = utils.parse_mappings( cfg.CONF.MLNX.physical_network_type_mappings) except ValueError as e: LOG.error(_("Parsing physical_network_type failed: %s." " Server terminated!"), e) raise SystemExit(1) for network, type in self.phys_network_type_maps.iteritems(): if type not in (constants.TYPE_ETH, constants.TYPE_IB): LOG.error(_("Invalid physical network type %(type)s " " for network %(net)s. Server terminated!"), {'net': network, 'type': type}) raise SystemExit(1) LOG.info(_("Physical Network type mappings: %s"), self.phys_network_type_maps)
**** CubicPower OpenStack Study **** def _parse_network_vlan_ranges(self): try: self.network_vlan_ranges = plugin_utils.parse_network_vlan_ranges( cfg.CONF.MLNX.network_vlan_ranges) except Exception as ex: LOG.error(_("%s. Server terminated!"), ex) sys.exit(1) LOG.info(_("Network VLAN ranges: %s"), self.network_vlan_ranges)
**** CubicPower OpenStack Study **** def _extend_network_dict_provider(self, context, network): binding = db.get_network_binding(context.session, network['id']) network[provider.NETWORK_TYPE] = binding.network_type if binding.network_type == svc_constants.TYPE_FLAT: network[provider.PHYSICAL_NETWORK] = binding.physical_network network[provider.SEGMENTATION_ID] = None elif binding.network_type == svc_constants.TYPE_LOCAL: network[provider.PHYSICAL_NETWORK] = None network[provider.SEGMENTATION_ID] = None else: network[provider.PHYSICAL_NETWORK] = binding.physical_network network[provider.SEGMENTATION_ID] = binding.segmentation_id
**** CubicPower OpenStack Study **** def _set_tenant_network_type(self): self.tenant_network_type = cfg.CONF.MLNX.tenant_network_type if self.tenant_network_type not in [svc_constants.TYPE_VLAN, svc_constants.TYPE_LOCAL, svc_constants.TYPE_NONE]: LOG.error(_("Invalid tenant_network_type: %s. " "Service terminated!"), self.tenant_network_type) sys.exit(1)
**** CubicPower OpenStack Study **** def _process_provider_create(self, context, attrs): network_type = attrs.get(provider.NETWORK_TYPE) physical_network = attrs.get(provider.PHYSICAL_NETWORK) segmentation_id = attrs.get(provider.SEGMENTATION_ID) network_type_set = attributes.is_attr_set(network_type) physical_network_set = attributes.is_attr_set(physical_network) segmentation_id_set = attributes.is_attr_set(segmentation_id) if not (network_type_set or physical_network_set or segmentation_id_set): return (None, None, None) if not network_type_set: msg = _("provider:network_type required") raise n_exc.InvalidInput(error_message=msg) elif network_type == svc_constants.TYPE_FLAT: self._process_flat_net(segmentation_id_set) segmentation_id = constants.FLAT_VLAN_ID elif network_type == svc_constants.TYPE_VLAN: self._process_vlan_net(segmentation_id, segmentation_id_set) elif network_type == svc_constants.TYPE_LOCAL: self._process_local_net(physical_network_set, segmentation_id_set) segmentation_id = constants.LOCAL_VLAN_ID physical_network = None else: msg = _("provider:network_type %s not supported") % network_type raise n_exc.InvalidInput(error_message=msg) physical_network = self._process_net_type(network_type, physical_network, physical_network_set) return (network_type, physical_network, segmentation_id)
**** CubicPower OpenStack Study **** def _process_flat_net(self, segmentation_id_set): if segmentation_id_set: msg = _("provider:segmentation_id specified for flat network") raise n_exc.InvalidInput(error_message=msg)
**** CubicPower OpenStack Study **** def _process_vlan_net(self, segmentation_id, segmentation_id_set): if not segmentation_id_set: msg = _("provider:segmentation_id required") raise n_exc.InvalidInput(error_message=msg) if not utils.is_valid_vlan_tag(segmentation_id): msg = (_("provider:segmentation_id out of range " "(%(min_id)s through %(max_id)s)") % {'min_id': q_const.MIN_VLAN_TAG, 'max_id': q_const.MAX_VLAN_TAG}) raise n_exc.InvalidInput(error_message=msg)
**** CubicPower OpenStack Study **** def _process_local_net(self, physical_network_set, segmentation_id_set): if physical_network_set: msg = _("provider:physical_network specified for local " "network") raise n_exc.InvalidInput(error_message=msg) if segmentation_id_set: msg = _("provider:segmentation_id specified for local " "network") raise n_exc.InvalidInput(error_message=msg)
**** CubicPower OpenStack Study **** def _process_net_type(self, network_type, physical_network, physical_network_set): if network_type in [svc_constants.TYPE_VLAN, svc_constants.TYPE_FLAT]: if physical_network_set: if physical_network not in self.network_vlan_ranges: msg = _("Unknown provider:physical_network " "%s") % physical_network raise n_exc.InvalidInput(error_message=msg) elif 'default' in self.network_vlan_ranges: physical_network = 'default' else: msg = _("provider:physical_network required") raise n_exc.InvalidInput(error_message=msg) return physical_network
**** CubicPower OpenStack Study **** def _check_port_binding_for_net_type(self, vnic_type, net_type): """ VIF_TYPE_DIRECT is valid only for Ethernet fabric """ if net_type == constants.TYPE_ETH: return vnic_type in (constants.VIF_TYPE_DIRECT, constants.VIF_TYPE_HOSTDEV) elif net_type == constants.TYPE_IB: return vnic_type == constants.VIF_TYPE_HOSTDEV return False
**** CubicPower OpenStack Study **** def _process_port_binding_create(self, context, attrs): binding_profile = attrs.get(portbindings.PROFILE) binding_profile_set = attributes.is_attr_set(binding_profile) net_binding = db.get_network_binding(context.session, attrs.get('network_id')) phy_net = net_binding.physical_network if not binding_profile_set: return self.vnic_type if constants.VNIC_TYPE in binding_profile: vnic_type = binding_profile[constants.VNIC_TYPE] phy_net_type = self.phys_network_type_maps[phy_net] if vnic_type in (constants.VIF_TYPE_DIRECT, constants.VIF_TYPE_HOSTDEV): if self._check_port_binding_for_net_type(vnic_type, phy_net_type): self.base_binding_dict[portbindings.VIF_TYPE] = vnic_type return vnic_type else: msg = (_("Unsupported vnic type %(vnic_type)s " "for physical network type %(net_type)s") % {'vnic_type': vnic_type, 'net_type': phy_net_type}) else: msg = _("Invalid vnic_type on port_create") else: msg = _("vnic_type is not defined in port profile") raise n_exc.InvalidInput(error_message=msg)
**** CubicPower OpenStack Study **** def create_network(self, context, network): (network_type, physical_network, vlan_id) = self._process_provider_create(context, network['network']) session = context.session with session.begin(subtransactions=True): #set up default security groups tenant_id = self._get_tenant_id_for_create( context, network['network']) self._ensure_default_security_group(context, tenant_id) if not network_type: # tenant network network_type = self.tenant_network_type if network_type == svc_constants.TYPE_NONE: raise n_exc.TenantNetworksDisabled() elif network_type == svc_constants.TYPE_VLAN: physical_network, vlan_id = db.reserve_network(session) else: # TYPE_LOCAL vlan_id = constants.LOCAL_VLAN_ID else: # provider network if network_type in [svc_constants.TYPE_VLAN, svc_constants.TYPE_FLAT]: db.reserve_specific_network(session, physical_network, vlan_id) net = super(MellanoxEswitchPlugin, self).create_network(context, network) db.add_network_binding(session, net['id'], network_type, physical_network, vlan_id) self._process_l3_create(context, net, network['network']) self._extend_network_dict_provider(context, net) # note - exception will rollback entire transaction LOG.debug(_("Created network: %s"), net['id']) return net
**** CubicPower OpenStack Study **** def update_network(self, context, net_id, network): LOG.debug(_("Update network")) provider._raise_if_updates_provider_attributes(network['network']) session = context.session with session.begin(subtransactions=True): net = super(MellanoxEswitchPlugin, self).update_network(context, net_id, network) self._process_l3_update(context, net, network['network']) self._extend_network_dict_provider(context, net) return net
**** CubicPower OpenStack Study **** def delete_network(self, context, net_id): LOG.debug(_("Delete network")) session = context.session with session.begin(subtransactions=True): binding = db.get_network_binding(session, net_id) super(MellanoxEswitchPlugin, self).delete_network(context, net_id) if binding.segmentation_id != constants.LOCAL_VLAN_ID: db.release_network(session, binding.physical_network, binding.segmentation_id, self.network_vlan_ranges) # the network_binding record is deleted via cascade from # the network record, so explicit removal is not necessary self.notifier.network_delete(context, net_id)
**** CubicPower OpenStack Study **** def get_network(self, context, net_id, fields=None): session = context.session with session.begin(subtransactions=True): net = super(MellanoxEswitchPlugin, self).get_network(context, net_id, None) self._extend_network_dict_provider(context, net) return self._fields(net, fields)
**** CubicPower OpenStack Study **** def get_networks(self, context, filters=None, fields=None, sorts=None, limit=None, marker=None, page_reverse=False): session = context.session with session.begin(subtransactions=True): nets = super(MellanoxEswitchPlugin, self).get_networks(context, filters, None, sorts, limit, marker, page_reverse) for net in nets: self._extend_network_dict_provider(context, net) return [self._fields(net, fields) for net in nets]
**** CubicPower OpenStack Study **** def _extend_port_dict_binding(self, context, port): port_binding = db.get_port_profile_binding(context.session, port['id']) if port_binding: port[portbindings.VIF_TYPE] = port_binding.vnic_type binding = db.get_network_binding(context.session, port['network_id']) fabric = binding.physical_network port[portbindings.PROFILE] = {'physical_network': fabric} return port
**** CubicPower OpenStack Study **** def create_port(self, context, port): LOG.debug(_("create_port with %s"), port) session = context.session port_data = port['port'] with session.begin(subtransactions=True): self._ensure_default_security_group_on_port(context, port) sgids = self._get_security_groups_on_port(context, port) # Set port status as 'DOWN'. This will be updated by agent port['port']['status'] = q_const.PORT_STATUS_DOWN vnic_type = self._process_port_binding_create(context, port['port']) port = super(MellanoxEswitchPlugin, self).create_port(context, port) self._process_portbindings_create_and_update(context, port_data, port) db.add_port_profile_binding(context.session, port['id'], vnic_type) self._process_port_create_security_group( context, port, sgids) self.notify_security_groups_member_updated(context, port) return self._extend_port_dict_binding(context, port)
**** CubicPower OpenStack Study **** def get_port(self, context, id, fields=None): port = super(MellanoxEswitchPlugin, self).get_port(context, id, fields) self._extend_port_dict_binding(context, port) return self._fields(port, fields)
**** CubicPower OpenStack Study **** def get_ports(self, context, filters=None, fields=None, sorts=None, limit=None, marker=None, page_reverse=False): res_ports = [] ports = super(MellanoxEswitchPlugin, self).get_ports(context, filters, fields, sorts, limit, marker, page_reverse) for port in ports: port = self._extend_port_dict_binding(context, port) res_ports.append(self._fields(port, fields)) return res_ports
**** CubicPower OpenStack Study **** def update_port(self, context, port_id, port): original_port = self.get_port(context, port_id) session = context.session need_port_update_notify = False with session.begin(subtransactions=True): updated_port = super(MellanoxEswitchPlugin, self).update_port( context, port_id, port) self._process_portbindings_create_and_update(context, port['port'], updated_port) need_port_update_notify = self.update_security_group_on_port( context, port_id, port, original_port, updated_port) 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: binding = db.get_network_binding(context.session, updated_port['network_id']) self.notifier.port_update(context, updated_port, binding.physical_network, binding.network_type, binding.segmentation_id) return self._extend_port_dict_binding(context, updated_port)
**** CubicPower OpenStack Study **** def delete_port(self, context, port_id, l3_port_check=True): # if needed, check to see if this is a port owned by # and l3-router. If so, we should prevent deletion. if l3_port_check: self.prevent_l3_port_deletion(context, port_id) session = context.session with session.begin(subtransactions=True): self.disassociate_floatingips(context, port_id) port = self.get_port(context, port_id) self._delete_port_security_group_bindings(context, port_id) super(MellanoxEswitchPlugin, self).delete_port(context, port_id) self.notify_security_groups_member_updated(context, port)
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