+ def trex_stl_start_unidirection(self, duration, rate, framesize,
+ traffic_type, tx_port=0, rx_port=1,
+ async_call=False, latency=False,
+ warmup_time=5.0):
+ """Execute script on remote node over ssh to start unidirection traffic.
+ The purpose of this function is to support performance test that need to
+ measure unidirectional traffic, e.g. Load balancer maglev mode and l3dsr
+ mode test.
+
+ :param duration: Time expresed in seconds for how long to send traffic.
+ :param rate: Traffic rate expressed with units (pps, %)
+ :param framesize: L2 frame size to send (without padding and IPG).
+ :param traffic_type: Module name as a traffic type identifier.
+ See resources/traffic_profiles/trex for implemented modules.
+ :param tx_port: Traffic generator transmit port.
+ :param rx_port: Traffic generator receive port.
+ :param latency: With latency measurement.
+ :param async_call: If enabled then don't wait for all incomming trafic.
+ :param warmup_time: Warmup time period.
+ :type duration: float
+ :type rate: str
+ :type framesize: str
+ :type traffic_type: str
+ :type tx_port: integer
+ :type rx_port: integer
+ :type latency: bool
+ :type async_call: bool
+ :type warmup_time: float
+ :returns: Nothing
+ :raises RuntimeError: In case of TG driver issue.
+ """
+ ssh = SSH()
+ ssh.connect(self._node)
+
+ _latency = "--latency" if latency else ""
+ _async = "--async" if async_call else ""
+
+ profile_path = ("{0}/resources/traffic_profiles/trex/"
+ "{1}.py".format(Constants.REMOTE_FW_DIR,
+ traffic_type))
+ (ret, stdout, _) = ssh.exec_command(
+ "sh -c "
+ "'{0}/resources/tools/trex/trex_stateless_profile.py "
+ "--profile {1} "
+ "--duration {2} "
+ "--frame_size {3} "
+ "--rate {4} "
+ "--warmup_time {5} "
+ "--port_0 {6} "
+ "--port_1 {7} "
+ "{8} " # --async
+ "{9} " # --latency
+ "{10}'". # --unidirection
+ format(Constants.REMOTE_FW_DIR, profile_path, duration, framesize,
+ rate, warmup_time, tx_port, rx_port, _async, _latency,
+ "--unidirection"),
+ timeout=float(duration) + 60)
+
+ if int(ret) != 0:
+ raise RuntimeError('TRex unidirection runtime error')
+ elif async_call:
+ #no result
+ self._received = None
+ self._sent = None
+ self._loss = None
+ self._latency = None
+ else:
+ # last line from console output
+ line = stdout.splitlines()[-1]
+
+ self._result = line
+ logger.info('TrafficGen result: {0}'.format(self._result))
+
+ self._received = self._result.split(', ')[1].split('=')[1]
+ self._sent = self._result.split(', ')[2].split('=')[1]
+ self._loss = self._result.split(', ')[3].split('=')[1]
+ self._latency = []
+ self._latency.append(self._result.split(', ')[4].split('=')[1])
+