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# Copyright (c) 2015 Intel Research and Development Ireland Ltd.
#
# 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.
from __future__ import absolute_import
from six.moves import range
from experimental_framework.benchmarks import benchmark_base_class
from experimental_framework.packet_generators \
import dpdk_packet_generator as dpdk
import experimental_framework.common as common
from experimental_framework.constants import framework_parameters as fp
PACKET_SIZE = 'packet_size'
VLAN_SENDER = 'vlan_sender'
VLAN_RECEIVER = 'vlan_receiver'
class RFC2544ThroughputBenchmark(benchmark_base_class.BenchmarkBaseClass):
"""
Calculates the throughput of the VNF under test according to the RFC2544.
"""
def __init__(self, name, params):
benchmark_base_class.BenchmarkBaseClass.__init__(self, name, params)
self.base_dir = common.get_base_dir() + \
fp.EXPERIMENTAL_FRAMEWORK_DIR + fp.DPDK_PKTGEN_DIR
self.results_file = self.base_dir + 'experiment.res'
self.lua_file = self.base_dir + 'rfc2544.lua'
def init(self):
"""
Initialize the benchmark
:return: None
"""
pass
def finalize(self):
"""
:return: None
"""
pass
def get_features(self):
"""
Returns the features associated to the benchmark
:return:
"""
features = dict()
features['description'] = 'RFC 2544 Throughput calculation'
features['parameters'] = [PACKET_SIZE, VLAN_SENDER, VLAN_RECEIVER]
features['allowed_values'] = dict()
features['allowed_values'][PACKET_SIZE] = ['64', '128', '256', '512',
'1024', '1280', '1514']
features['allowed_values'][VLAN_SENDER] = [str(x) for x in
range(-1, 4096)]
features['allowed_values'][VLAN_RECEIVER] = [str(x) for x in
range(-1, 4096)]
features['default_values'] = dict()
features['default_values'][PACKET_SIZE] = '1280'
features['default_values'][VLAN_SENDER] = '1007'
features['default_values'][VLAN_RECEIVER] = '1006'
return features
def run(self):
"""
Sends and receive traffic according to the RFC methodology in order
to measure the throughput of the workload
:return: Results of the testcase (type: dict)
"""
packet_size = self._extract_packet_size_from_params()
# Packetgen management
packetgen = dpdk.DpdkPacketGenerator()
self._configure_lua_file()
packetgen.init_dpdk_pktgen(dpdk_interfaces=2,
pcap_file_0='packet_' +
packet_size + '.pcap',
pcap_file_1='igmp.pcap',
lua_script='rfc2544.lua',
vlan_0=self.params[VLAN_SENDER],
vlan_1=self.params[VLAN_RECEIVER])
common.LOG.debug('Start the packet generator - packet size: ' +
str(packet_size))
packetgen.send_traffic()
common.LOG.debug('Stop the packet generator')
return self._get_results()
def _extract_packet_size_from_params(self):
"""
Extracts packet sizes from parameters
:return: packet_sizes (list)
"""
packet_size = '1280' # default value
if PACKET_SIZE in list(self.params.keys()) and \
isinstance(self.params[PACKET_SIZE], str):
packet_size = self.params[PACKET_SIZE]
return packet_size
def _configure_lua_file(self):
"""
Configure the packet gen to write the results into the right file
:return: None
"""
common.replace_in_file(self.lua_file, 'local out_file = ""',
'local out_file = "' +
self.results_file + '"')
def _reset_lua_file(self):
"""
Sets back the configuration of the local file var to the default
:return:
"""
common.replace_in_file(self.lua_file, 'local out_file = "' +
self.results_file + '"',
'local out_file = ""')
def _get_results(self):
"""
Returns the results of the experiment
:return: None
"""
throughput = common.get_file_first_line(self.results_file)
ret_val = dict()
try:
ret_val['throughput'] = int(throughput)
except:
ret_val['throughput'] = 0
return ret_val
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