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intel_qat.py
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intel_qat.py
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#!/usr/bin/env python3
#
# Copyright (C) 2019-2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import re
from sys import exit
from vyos.config import Config
from vyos.util import popen, run
from vyos import ConfigError
from vyos import airbag
airbag.enable()
qat_init_script = '/etc/init.d/qat_service'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
data = {}
if conf.exists(['system', 'acceleration', 'qat']):
data.update({'qat_enable' : ''})
if conf.exists(['vpn', 'ipsec']):
data.update({'ipsec' : ''})
if conf.exists(['interfaces', 'openvpn']):
data.update({'openvpn' : ''})
return data
def vpn_control(action, force_ipsec=False):
# XXX: Should these commands report failure?
if action == 'restore' and force_ipsec:
return run('ipsec start')
return run(f'ipsec {action}')
def verify(qat):
if 'qat_enable' not in qat:
return
# Check if QAT service installed
if not os.path.exists(qat_init_script):
raise ConfigError('QAT init script not found')
# Check if QAT device exist
output, err = popen('lspci -nn', decode='utf-8')
if not err:
# PCI id | Chipset
# 19e2 -> C3xx
# 37c8 -> C62x
# 0435 -> DH895
# 6f54 -> D15xx
# 18ee -> QAT_200XX
data = re.findall(
'(8086:19e2)|(8086:37c8)|(8086:0435)|(8086:6f54)|(8086:18ee)', output)
# If QAT devices found
if not data:
raise ConfigError('No QAT acceleration device found')
def apply(qat):
# Shutdown VPN service which can use QAT
if 'ipsec' in qat:
vpn_control('stop')
# Enable/Disable QAT service
if 'qat_enable' in qat:
run(f'{qat_init_script} start')
else:
run(f'{qat_init_script} stop')
# Recover VPN service
if 'ipsec' in qat:
vpn_control('start')
if __name__ == '__main__':
try:
c = get_config()
verify(c)
apply(c)
except ConfigError as e:
print(e)
vpn_control('restore', force_ipsec=('ipsec' in c))
exit(1)

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intel_qat.py (2 KB)

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