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# Copyright 2016 Intel Corporation.
#
# 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.
"""VSPERF TestPMD implementation
"""
import logging
import pexpect
from conf import settings
from src.dpdk import dpdk
from src.dpdk import TestPMDProcess
from tools.pkt_fwd.pkt_fwd import IPktFwd
_LOGGER = logging.getLogger(__name__)
_VSWITCHD_CONST_ARGS = ['--', '-i']
class TestPMD(IPktFwd):
"""TestPMD implementation (only phy2phy deployment is supported)
This is wrapper for functionality implemented in ${DPDK}/app/test-pmd.
The method docstrings document only considerations specific to this
implementation. For generic information of the nature of the methods,
see the interface definition.
"""
_logger = logging.getLogger()
def __init__(self):
vswitchd_args = settings.getValue('VSWITCHD_DPDK_ARGS')
vswitchd_args += _VSWITCHD_CONST_ARGS
vswitchd_args += settings.getValue('TESTPMD_ARGS')
self._nports = len(settings.getValue('WHITELIST_NICS'))
self._fwdmode = settings.getValue('TESTPMD_FWD_MODE')
self._csum_layer = settings.getValue('TESTPMD_CSUM_LAYER')
self._csum_calc = settings.getValue('TESTPMD_CSUM_CALC')
self._csum_tunnel = settings.getValue('TESTPMD_CSUM_PARSE_TUNNEL')
self._testpmd = TestPMDProcess(testpmd_args=vswitchd_args)
def start(self):
"""See IPktFwd for general description
Activates testpmd.
"""
self._logger.info("Starting TestPMD...")
dpdk.init()
self._testpmd.start()
self._logger.info("TestPMD...Started.")
self._testpmd.send('set fwd {}'.format(self._fwdmode), 1)
for port in range(self._nports):
self._testpmd.send('csum set {} {} {}'.format(
self._csum_layer, self._csum_calc, port), 1)
self._testpmd.send('csum parse_tunnel {} {}'.format(
self._csum_tunnel, port), 1)
self._testpmd.send('start', 1)
def stop(self):
"""See IPktFwd for general description
Kills testpmd.
"""
try:
self._testpmd.send('stop')
self._testpmd.wait('Done.', 5)
self._testpmd.send('quit', 2)
self._testpmd.kill()
except pexpect.EOF:
pass
dpdk.cleanup()
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