111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
# Copyright 2014 Mellanox Technologies, Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import enum
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from oslo_log import log as logging
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from neutron.agent.linux import ip_lib
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LOG = logging.getLogger(__name__)
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class LinkState(enum.Enum):
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auto = 0
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enable = 1
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disable = 2
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class PciDeviceIPWrapper(ip_lib.IPWrapper):
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"""Wrapper class for ip link commands related to virtual functions."""
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def __init__(self, dev_name):
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super(PciDeviceIPWrapper, self).__init__()
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self.dev_name = dev_name
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def get_assigned_macs(self, vf_list):
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"""Get assigned mac addresses for vf list.
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@param vf_list: list of vf indexes
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@return: dict mapping of vf to mac
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"""
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ip = self.device(self.dev_name)
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vfs = ip.link.get_vfs()
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vf_to_mac_mapping = {}
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for vf_num in vf_list:
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if vfs.get(vf_num):
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vf_to_mac_mapping[vf_num] = vfs[vf_num]['mac']
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return vf_to_mac_mapping
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def get_vf_state(self, vf_index):
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"""Get vf state {enable/disable/auto}
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@param vf_index: vf index
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"""
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ip = self.device(self.dev_name)
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vfs = ip.link.get_vfs()
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vf = vfs.get(vf_index)
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if vf:
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return LinkState(int(vf['link_state'])).name
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return LinkState.disable.name
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def set_vf_state(self, vf_index, state, auto=False):
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"""sets vf state.
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@param vf_index: vf index
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@param state: required state {True: enable (1)
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False: disable (2)}
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@param auto: set link_state to auto (0)
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"""
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ip = self.device(self.dev_name)
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if auto:
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link_state = 0
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else:
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link_state = 1 if state else 2
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vf_config = {'vf': vf_index, 'link_state': link_state}
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ip.link.set_vf_feature(vf_config)
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def set_vf_spoofcheck(self, vf_index, enabled):
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"""sets vf spoofcheck
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@param vf_index: vf index
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@param enabled: True to enable (1) spoof checking,
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False to disable (0)
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"""
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ip = self.device(self.dev_name)
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vf_config = {'vf': vf_index, 'spoofchk': int(enabled)}
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ip.link.set_vf_feature(vf_config)
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def set_vf_rate(self, vf_index, rate_type, rate_value):
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"""sets vf rate.
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@param vf_index: vf index
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@param rate_type: vf rate type ('max_tx_rate', 'min_tx_rate')
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@param rate_value: vf rate in Mbps
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"""
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ip = self.device(self.dev_name)
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vf_config = {'vf': vf_index, 'rate': {rate_type: int(rate_value)}}
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try:
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ip.link.set_vf_feature(vf_config)
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except ip_lib.InvalidArgument:
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# NOTE(ralonsoh): some NICs do not support "min_tx_rate" parameter.
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# https://bugs.launchpad.net/neutron/+bug/1918464
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LOG.error('Device %(device)s does not support ip-link vf '
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'"%(rate_type)s" parameter.',
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{'device': self.dev_name, 'rate_type': rate_type})
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