104 lines
4.2 KiB
Python
104 lines
4.2 KiB
Python
# 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_linux as qos
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from neutron.plugins.ml2.drivers.mech_sriov.agent import eswitch_manager as esm
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from neutron.privileged.agent.linux import ip_lib as priv_ip_lib
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from neutron.services.qos.drivers.sriov import driver
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LOG = logging.getLogger(__name__)
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class QosSRIOVAgentDriver(qos.QosLinuxAgentDriver):
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SUPPORTED_RULES = driver.SUPPORTED_RULES
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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_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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if port.get('device_owner') is None:
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self.eswitch_mgr.clear_max_rate(pci_slot)
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else:
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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 (priv_ip_lib.InterfaceOperationNotSupported,
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priv_ip_lib.InvalidArgument):
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LOG.exception("Failed to set device %s max rate", device)
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else:
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LOG.info("No device with MAC %s defined on agent.", device)
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# TODO(ihrachys): those handlers are pretty similar, probably could make
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# use of some code deduplication
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def create_minimum_bandwidth(self, port, rule):
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self.update_minimum_bandwidth(port, rule)
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def update_minimum_bandwidth(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_min_tx_rate(device, pci_slot, rule.min_kbps)
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def delete_minimum_bandwidth(self, port):
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pci_slot = port['profile'].get('pci_slot')
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if port.get('device_owner') is None:
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self.eswitch_mgr.clear_min_tx_rate(pci_slot)
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else:
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device = port['device']
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self._set_vf_min_tx_rate(device, pci_slot)
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# Note(lajoskatona): As minimum bandwidth rule was allowed to be used by
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# OVS and SRIOV even with ingress direction for the placement based
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# enforcement, but the dataplane enforcement implementation is not yet
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# ready this method is empty.
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# For details see:
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# RFE for placement based enforcement:
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# https://bugs.launchpad.net/neutron/+bug/1578989
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# RFE for dataplane based enforcement:
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# https://bugs.launchpad.net/neutron/+bug/1560963
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def delete_minimum_bandwidth_ingress(self, port):
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LOG.debug("Minimum bandwidth rule for ingress direction was deleted "
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"for port %s", port['port_id'])
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def _set_vf_min_tx_rate(self, device, pci_slot, min_tx_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_min_tx_rate(
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device, pci_slot, min_tx_kbps)
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except (priv_ip_lib.InterfaceOperationNotSupported,
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priv_ip_lib.InvalidArgument):
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LOG.exception("Failed to set device %s min_tx_rate", device)
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else:
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LOG.info("No device with MAC %s defined on agent.", device)
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