85 lines
3.2 KiB
Python
Executable File
85 lines
3.2 KiB
Python
Executable File
# Copyright 2015 Mellanox Technologies, Ltd
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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_log import log as logging
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from neutron.agent.l2.extensions import qos
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from neutron.i18n import _LE, _LI, _LW
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from neutron.plugins.ml2.drivers.mech_sriov.agent.common import (
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exceptions as exc)
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from neutron.plugins.ml2.drivers.mech_sriov.agent import eswitch_manager as esm
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from neutron.plugins.ml2.drivers.mech_sriov.mech_driver import (
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mech_driver)
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LOG = logging.getLogger(__name__)
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class QosSRIOVAgentDriver(qos.QosAgentDriver):
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_SUPPORTED_RULES = (
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mech_driver.SriovNicSwitchMechanismDriver.supported_qos_rule_types)
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def __init__(self):
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super(QosSRIOVAgentDriver, self).__init__()
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self.eswitch_mgr = None
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def initialize(self):
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self.eswitch_mgr = esm.ESwitchManager()
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def create(self, port, qos_policy):
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self._handle_rules('create', port, qos_policy)
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def update(self, port, qos_policy):
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self._handle_rules('update', port, qos_policy)
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def delete(self, port, qos_policy):
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# TODO(QoS): consider optimizing flushing of all QoS rules from the
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# port by inspecting qos_policy.rules contents
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self._delete_bandwidth_limit(port)
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def _handle_rules(self, action, port, qos_policy):
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for rule in qos_policy.rules:
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if rule.rule_type in self._SUPPORTED_RULES:
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handler_name = ("".join(("_", action, "_", rule.rule_type)))
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handler = getattr(self, handler_name)
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handler(port, rule)
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else:
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LOG.warning(_LW('Unsupported QoS rule type for %(rule_id)s: '
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'%(rule_type)s; skipping'),
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{'rule_id': rule.id, 'rule_type': rule.rule_type})
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def _create_bandwidth_limit(self, port, rule):
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self._update_bandwidth_limit(port, rule)
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def _update_bandwidth_limit(self, port, rule):
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pci_slot = port['profile'].get('pci_slot')
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device = port['device']
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self._set_vf_max_rate(device, pci_slot, rule.max_kbps)
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def _delete_bandwidth_limit(self, port):
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pci_slot = port['profile'].get('pci_slot')
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device = port['device']
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self._set_vf_max_rate(device, pci_slot)
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def _set_vf_max_rate(self, device, pci_slot, max_kbps=0):
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if self.eswitch_mgr.device_exists(device, pci_slot):
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try:
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self.eswitch_mgr.set_device_max_rate(
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device, pci_slot, max_kbps)
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except exc.SriovNicError:
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LOG.exception(
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_LE("Failed to set device %s max rate"), device)
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else:
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LOG.info(_LI("No device with MAC %s defined on agent."), device)
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