a2ed2a6b8b
This change is used to derive the pci_passthrough_whitelist parameters
automatically for all the SR-IOV nodes.
Change-Id: I3bd57d10580fc303201dc7516480ecf237bc98a5
Closes-Bug: #1841041
(cherry picked from commit a7ed27c30d)
126 lines
4.5 KiB
Python
126 lines
4.5 KiB
Python
#!/usr/bin/env python
|
|
|
|
#
|
|
# Copyright 2019 Red Hat Inc.
|
|
#
|
|
# 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.
|
|
|
|
import json
|
|
import os
|
|
import re
|
|
import yaml
|
|
|
|
|
|
def get_sriov_configs():
|
|
configs = []
|
|
try:
|
|
with open('/var/lib/os-net-config/sriov_config.yaml') as sriov_config:
|
|
configs = yaml.safe_load(sriov_config)
|
|
except IOError:
|
|
configs = []
|
|
return configs
|
|
|
|
|
|
def get_sriov_nic_partition_pfs(configs):
|
|
pfs = []
|
|
for config in configs:
|
|
device_type = config.get('device_type', None)
|
|
if device_type and 'vf' in device_type:
|
|
device = config.get('device', None)
|
|
if device:
|
|
dev_name = device.get('name', None)
|
|
if dev_name and dev_name not in pfs:
|
|
pfs.append(dev_name)
|
|
return pfs
|
|
|
|
|
|
def get_pci_device_info_by_ifname(pci_dir, sub_dir):
|
|
if not os.path.isdir(os.path.join(pci_dir, sub_dir)):
|
|
return None
|
|
try:
|
|
# ids located in files inside PCI devices
|
|
# directory are stored in hex format (0x1234 for example)
|
|
with open(os.path.join(pci_dir, sub_dir,
|
|
'vendor')) as vendor_file:
|
|
vendor = vendor_file.read().strip()
|
|
with open(os.path.join(pci_dir, sub_dir,
|
|
'device')) as product_file:
|
|
product = product_file.read().strip()
|
|
return (vendor, product)
|
|
except IOError as exc:
|
|
return None
|
|
|
|
|
|
def get_pci_addresses_by_ifname(pfs, allocated_pci):
|
|
pci_addresses = {}
|
|
device_info = {}
|
|
pci_dir = '/sys/bus/pci/devices'
|
|
if os.path.isdir(pci_dir):
|
|
for sub_dir in os.listdir(pci_dir):
|
|
if sub_dir in allocated_pci:
|
|
continue
|
|
pci_phyfn_dir = os.path.join(pci_dir, sub_dir, 'physfn/net')
|
|
if os.path.isdir(pci_phyfn_dir):
|
|
phyfn_dirs = os.listdir(pci_phyfn_dir)
|
|
for phyfn in phyfn_dirs:
|
|
if phyfn in pfs:
|
|
if phyfn not in pci_addresses:
|
|
pci_addresses[phyfn] = [sub_dir]
|
|
else:
|
|
pci_addresses[phyfn].append(sub_dir)
|
|
if phyfn not in device_info:
|
|
dev_info = get_pci_device_info_by_ifname(pci_dir, sub_dir)
|
|
if dev_info:
|
|
device_info[phyfn] = dev_info
|
|
return (pci_addresses, device_info)
|
|
|
|
|
|
def get_allocated_pci_addresses(configs):
|
|
alloc_pci_info = []
|
|
for config in configs:
|
|
pci = config.get('pci_address', None)
|
|
if pci:
|
|
alloc_pci_info.append(pci)
|
|
return alloc_pci_info
|
|
|
|
|
|
def get_pci_passthrough_whitelist(pci_addresses, device_info):
|
|
pci_passthrough_whitelist = {}
|
|
pci_passthrough_list = []
|
|
for pf, pci_list in pci_addresses.items():
|
|
for pci in pci_list:
|
|
pci_passthrough = {}
|
|
address = {}
|
|
pci_params = re.split('[:.]+', pci)
|
|
address['domain'] = '.*'
|
|
address['bus'] = pci_params[1]
|
|
address['slot'] = pci_params[2]
|
|
address['function'] = pci_params[3]
|
|
pci_passthrough['address'] = address
|
|
pci_passthrough['vendor_id'] = device_info[pf][0]
|
|
pci_passthrough['product_id'] = device_info[pf][1]
|
|
pci_passthrough_list.append(pci_passthrough)
|
|
pci_passthrough_whitelist['nova::compute::pci::passthrough'] = str(json.dumps(pci_passthrough_list))
|
|
return pci_passthrough_whitelist
|
|
|
|
|
|
if __name__ == "__main__":
|
|
pci_file_path = '/etc/puppet/hieradata/pci_passthrough_whitelist.json'
|
|
configs = get_sriov_configs()
|
|
nic_partition_pfs = get_sriov_nic_partition_pfs(configs)
|
|
allocated_pci = get_allocated_pci_addresses(configs)
|
|
pci_addresses, device_info = get_pci_addresses_by_ifname(nic_partition_pfs, allocated_pci)
|
|
pci_passthrough = get_pci_passthrough_whitelist(pci_addresses, device_info)
|
|
with open(pci_file_path, 'w') as pci_file:
|
|
json.dump(pci_passthrough, pci_file)
|