223 lines
9.5 KiB
Python
223 lines
9.5 KiB
Python
# Copyright 2014 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.
|
|
|
|
from neutron_lib import constants
|
|
from oslo_config import cfg
|
|
from oslo_log import log
|
|
|
|
from neutron._i18n import _, _LE, _LW
|
|
from neutron.extensions import portbindings
|
|
from neutron.plugins.common import constants as p_const
|
|
from neutron.plugins.ml2 import driver_api as api
|
|
from neutron.plugins.ml2.drivers import mech_agent
|
|
from neutron.plugins.ml2.drivers.mech_sriov.mech_driver \
|
|
import exceptions as exc
|
|
from neutron.services.qos import qos_consts
|
|
|
|
|
|
LOG = log.getLogger(__name__)
|
|
VIF_TYPE_HW_VEB = 'hw_veb'
|
|
VIF_TYPE_HOSTDEV_PHY = 'hostdev_physical'
|
|
FLAT_VLAN = 0
|
|
|
|
sriov_opts = [
|
|
cfg.ListOpt('supported_pci_vendor_devs',
|
|
help=_("Comma-separated list of supported PCI vendor devices, "
|
|
"as defined by vendor_id:product_id according to the "
|
|
"PCI ID Repository. Default None accept all PCI vendor "
|
|
"devices"
|
|
"DEPRECATED: This option is deprecated in the Newton "
|
|
"release and will be removed in the Ocata release. "
|
|
"Starting from Ocata the mechanism driver will accept "
|
|
"all PCI vendor devices."),
|
|
deprecated_for_removal=True),
|
|
|
|
]
|
|
|
|
cfg.CONF.register_opts(sriov_opts, "ml2_sriov")
|
|
|
|
|
|
class SriovNicSwitchMechanismDriver(mech_agent.SimpleAgentMechanismDriverBase):
|
|
"""Mechanism Driver for SR-IOV capable NIC based switching.
|
|
|
|
The SriovNicSwitchMechanismDriver integrates the ml2 plugin with the
|
|
sriovNicSwitch L2 agent depending on configuration option.
|
|
Port binding with this driver may require the sriovNicSwitch agent
|
|
to be running on the port's host, and that agent to have connectivity
|
|
to at least one segment of the port's network.
|
|
L2 agent is not essential for port binding; port binding is handled by
|
|
VIF Driver via libvirt domain XML.
|
|
L2 Agent presents in order to manage port update events.
|
|
"""
|
|
|
|
supported_qos_rule_types = [
|
|
qos_consts.RULE_TYPE_BANDWIDTH_LIMIT,
|
|
qos_consts.RULE_TYPE_MINIMUM_BANDWIDTH,
|
|
]
|
|
|
|
def __init__(self,
|
|
agent_type=constants.AGENT_TYPE_NIC_SWITCH,
|
|
vif_details={portbindings.CAP_PORT_FILTER: False},
|
|
supported_vnic_types=[portbindings.VNIC_DIRECT,
|
|
portbindings.VNIC_MACVTAP,
|
|
portbindings.VNIC_DIRECT_PHYSICAL]):
|
|
"""Initialize base class for SriovNicSwitch L2 agent type.
|
|
|
|
:param agent_type: Constant identifying agent type in agents_db
|
|
:param vif_details: Dictionary with details for VIF driver when bound
|
|
:param supported_vnic_types: The binding:vnic_type values we can bind
|
|
"""
|
|
self.agent_type = agent_type
|
|
self.supported_vnic_types = supported_vnic_types
|
|
# NOTE(ndipanov): PF passthrough requires a different vif type
|
|
self.vnic_type_for_vif_type = (
|
|
{vtype: VIF_TYPE_HOSTDEV_PHY
|
|
if vtype == portbindings.VNIC_DIRECT_PHYSICAL
|
|
else VIF_TYPE_HW_VEB
|
|
for vtype in self.supported_vnic_types})
|
|
self.vif_details = vif_details
|
|
|
|
def get_allowed_network_types(self, agent):
|
|
return (p_const.TYPE_FLAT, p_const.TYPE_VLAN)
|
|
|
|
def get_mappings(self, agent):
|
|
return agent['configurations'].get('device_mappings', {})
|
|
|
|
def initialize(self):
|
|
try:
|
|
self.pci_vendor_info = cfg.CONF.ml2_sriov.supported_pci_vendor_devs
|
|
if self.pci_vendor_info is not None:
|
|
self._check_pci_vendor_config(self.pci_vendor_info)
|
|
except ValueError:
|
|
LOG.exception(_LE("Failed to parse supported PCI vendor devices"))
|
|
raise cfg.Error(_("Parsing supported pci_vendor_devs failed"))
|
|
|
|
def bind_port(self, context):
|
|
LOG.debug("Attempting to bind port %(port)s on "
|
|
"network %(network)s",
|
|
{'port': context.current['id'],
|
|
'network': context.network.current['id']})
|
|
vnic_type = context.current.get(portbindings.VNIC_TYPE,
|
|
portbindings.VNIC_NORMAL)
|
|
if vnic_type not in self.supported_vnic_types:
|
|
LOG.debug("Refusing to bind due to unsupported vnic_type: %s",
|
|
vnic_type)
|
|
return
|
|
|
|
if not self._check_supported_pci_vendor_device(context):
|
|
LOG.debug("Refusing to bind due to unsupported pci_vendor device")
|
|
return
|
|
|
|
if vnic_type == portbindings.VNIC_DIRECT_PHYSICAL:
|
|
# Physical functions don't support things like QoS properties,
|
|
# spoof checking, etc. so we might as well side-step the agent
|
|
# for now. The agent also doesn't currently recognize non-VF
|
|
# PCI devices so we won't get port status change updates
|
|
# either. This should be changed in the future so physical
|
|
# functions can use device mapping checks and the plugin can
|
|
# get port status updates.
|
|
for segment in context.segments_to_bind:
|
|
if self.try_to_bind_segment_for_agent(context, segment,
|
|
agent=None):
|
|
break
|
|
return
|
|
|
|
for agent in context.host_agents(self.agent_type):
|
|
LOG.debug("Checking agent: %s", agent)
|
|
if agent['alive']:
|
|
for segment in context.segments_to_bind:
|
|
if self.try_to_bind_segment_for_agent(context, segment,
|
|
agent):
|
|
return
|
|
else:
|
|
LOG.warning(_LW("Attempting to bind with dead agent: %s"),
|
|
agent)
|
|
|
|
def try_to_bind_segment_for_agent(self, context, segment, agent):
|
|
vnic_type = context.current.get(portbindings.VNIC_TYPE,
|
|
portbindings.VNIC_DIRECT)
|
|
vif_type = self.vnic_type_for_vif_type.get(vnic_type,
|
|
VIF_TYPE_HW_VEB)
|
|
if not self.check_segment_for_agent(segment, agent):
|
|
return False
|
|
port_status = (constants.PORT_STATUS_ACTIVE if agent is None
|
|
else constants.PORT_STATUS_DOWN)
|
|
context.set_binding(segment[api.ID],
|
|
vif_type,
|
|
self._get_vif_details(segment),
|
|
port_status)
|
|
LOG.debug("Bound using segment: %s", segment)
|
|
return True
|
|
|
|
def check_segment_for_agent(self, segment, agent=None):
|
|
"""Check if segment can be bound.
|
|
|
|
:param segment: segment dictionary describing segment to bind
|
|
:param agent: agents_db entry describing agent to bind or None
|
|
:returns: True if segment can be bound for agent
|
|
"""
|
|
network_type = segment[api.NETWORK_TYPE]
|
|
if network_type in self.get_allowed_network_types(agent):
|
|
if agent:
|
|
mappings = self.get_mappings(agent)
|
|
LOG.debug("Checking segment: %(segment)s "
|
|
"for mappings: %(mappings)s ",
|
|
{'segment': segment, 'mappings': mappings})
|
|
return segment[api.PHYSICAL_NETWORK] in mappings
|
|
return True
|
|
return False
|
|
|
|
def _check_supported_pci_vendor_device(self, context):
|
|
if self.pci_vendor_info is None:
|
|
return True
|
|
if self.pci_vendor_info:
|
|
profile = context.current.get(portbindings.PROFILE, {})
|
|
if not profile:
|
|
LOG.debug("Missing profile in port binding")
|
|
return False
|
|
pci_vendor_info = profile.get('pci_vendor_info')
|
|
if not pci_vendor_info:
|
|
LOG.debug("Missing pci vendor info in profile")
|
|
return False
|
|
if pci_vendor_info not in self.pci_vendor_info:
|
|
LOG.debug("Unsupported pci_vendor %s", pci_vendor_info)
|
|
return False
|
|
return True
|
|
return False
|
|
|
|
def _get_vif_details(self, segment):
|
|
network_type = segment[api.NETWORK_TYPE]
|
|
if network_type == p_const.TYPE_FLAT:
|
|
vlan_id = FLAT_VLAN
|
|
elif network_type == p_const.TYPE_VLAN:
|
|
vlan_id = segment[api.SEGMENTATION_ID]
|
|
else:
|
|
raise exc.SriovUnsupportedNetworkType(net_type=network_type)
|
|
vif_details = self.vif_details.copy()
|
|
vif_details[portbindings.VIF_DETAILS_VLAN] = str(vlan_id)
|
|
return vif_details
|
|
|
|
@staticmethod
|
|
def _check_pci_vendor_config(pci_vendor_list):
|
|
for pci_vendor_info in pci_vendor_list:
|
|
try:
|
|
vendor_id, product_id = [
|
|
item.strip() for item in pci_vendor_info.split(':')
|
|
if item.strip()]
|
|
except ValueError:
|
|
raise ValueError(_('Incorrect pci_vendor_info: "%s", should be'
|
|
' pair vendor_id:product_id') %
|
|
pci_vendor_info)
|