9feff9047b
This set of changes introduces SRIOV NIC Agent to run with
ML2 mechanism driver for SR-IOV capable NIC based switching.
This is the second part of a 2 part commit.
The review is submitted in two parts:
- Part 1
The Mechanism Driver to support port binding for SR-IOV virtual
functions of SRIOV capable switching NICs.
- Part2 (this part)
The SRIOV NIC Based L2 Agent.
Use configurable list of mappings physical_networks to PF
interfaces and configurable list of mappings PF interfaces
to list of excluded VFs to get list of Virtual Functions that agent should manage.
Current implementation supports admin state updates.
Co-authored-by: Samer Deeb <samerd@mellanox.com>
Partially implements: blueprint ml2-sriov-nic-switch
Change-Id: I533ccee067935326d5837f90ba321a962e8dc2a6
89 lines
3.6 KiB
Python
89 lines
3.6 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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from oslo.config import cfg
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from neutron.agent.common import config
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def parse_exclude_devices(exclude_list):
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"""Parse Exclude devices list
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parses excluded device list in the form:
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dev_name:pci_dev_1;pci_dev_2
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@param exclude list: list of string pairs in "key:value" format
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the key part represents the network device name
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the value part is a list of PCI slots separated by ";"
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"""
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exclude_mapping = {}
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for dev_mapping in exclude_list:
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try:
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dev_name, exclude_devices = dev_mapping.split(":", 1)
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except ValueError:
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raise ValueError(_("Invalid mapping: '%s'") % dev_mapping)
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dev_name = dev_name.strip()
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if not dev_name:
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raise ValueError(_("Missing key in mapping: '%s'") % dev_mapping)
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if dev_name in exclude_mapping:
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raise ValueError(_("Device %(dev_name)s in mapping: %(mapping)s "
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"not unique") % {'dev_name': dev_name,
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'mapping': dev_mapping})
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exclude_devices_list = exclude_devices.split(";")
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exclude_devices_set = set()
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for dev in exclude_devices_list:
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dev = dev.strip()
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if dev:
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exclude_devices_set.add(dev)
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exclude_mapping[dev_name] = exclude_devices_set
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return exclude_mapping
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DEFAULT_DEVICE_MAPPINGS = []
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DEFAULT_EXCLUDE_DEVICES = []
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agent_opts = [
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cfg.IntOpt('polling_interval', default=2,
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help=_("The number of seconds the agent will wait between "
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"polling for local device changes.")),
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]
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sriov_nic_opts = [
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cfg.ListOpt('physical_device_mappings',
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default=DEFAULT_DEVICE_MAPPINGS,
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help=_("List of <physical_network>:<network_device> mapping "
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"physical network names to the agent's node-specific "
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"physical network device of SR-IOV physical "
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"function to be used for VLAN networks. "
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"All physical networks listed in network_vlan_ranges "
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"on the server should have mappings to appropriate "
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"interfaces on each agent")),
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cfg.ListOpt('exclude_devices',
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default=DEFAULT_EXCLUDE_DEVICES,
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help=_("List of <network_device>:<excluded_devices> "
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"mapping network_device to the agent's node-specific "
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"list of virtual functions that should not be used "
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"for virtual networking. excluded_devices is a "
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"semicolon separated list of virtual functions "
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"(BDF format).to exclude from network_device. "
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"The network_device in the mapping should appear in "
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"the physical_device_mappings list.")),
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]
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cfg.CONF.register_opts(agent_opts, 'AGENT')
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cfg.CONF.register_opts(sriov_nic_opts, 'SRIOV_NIC')
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config.register_agent_state_opts_helper(cfg.CONF)
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config.register_root_helper(cfg.CONF)
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