diff options
Diffstat (limited to 'resources/libraries/python/TrafficGenerator.py')
| -rw-r--r-- | resources/libraries/python/TrafficGenerator.py | 185 |
1 files changed, 60 insertions, 125 deletions
diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py index 6123b8753a..10fee9afbf 100644 --- a/resources/libraries/python/TrafficGenerator.py +++ b/resources/libraries/python/TrafficGenerator.py @@ -1,4 +1,4 @@ -# Copyright (c) 2018 Cisco and/or its affiliates. +# Copyright (c) 2019 Cisco and/or its affiliates. # 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: @@ -168,13 +168,14 @@ class TrafficGenerator(AbstractMeasurer): """ return self._latency - def initialize_traffic_generator(self, tg_node, tg_if1, tg_if2, - tg_if1_adj_node, tg_if1_adj_if, - tg_if2_adj_node, tg_if2_adj_if, - test_type, - tg_if1_dst_mac=None, tg_if2_dst_mac=None): + def initialize_traffic_generator( + self, tg_node, tg_if1, tg_if2, tg_if1_adj_node, tg_if1_adj_if, + tg_if2_adj_node, tg_if2_adj_if, test_type, tg_if1_dst_mac=None, + tg_if2_dst_mac=None): """TG initialization. + TODO: Document why do we need (and how do we use) _ifaces_reordered. + :param tg_node: Traffic generator node. :param tg_if1: TG - name of first interface. :param tg_if2: TG - name of second interface. @@ -386,9 +387,10 @@ class TrafficGenerator(AbstractMeasurer): if int(ret) != 0: raise RuntimeError('TRex stateless runtime error') - def trex_stl_start_remote_exec(self, duration, rate, framesize, - traffic_type, async_call=False, - latency=True, warmup_time=5.0): + def trex_stl_start_remote_exec( + self, duration, rate, framesize, traffic_type, async_call=False, + latency=True, warmup_time=5.0, unidirection=False, tx_port=0, + rx_port=1): """Execute script on remote node over ssh to start traffic. :param duration: Time expresed in seconds for how long to send traffic. @@ -399,6 +401,11 @@ class TrafficGenerator(AbstractMeasurer): :param async_call: If enabled then don't wait for all incomming trafic. :param latency: With latency measurement. :param warmup_time: Warmup time period. + :param unidirection: Traffic is unidirectional. Default: False + :param tx_port: Traffic generator transmit port for first flow. + Default: 0 + :param rx_port: Traffic generator receive port for first flow. + Default: 1 :type duration: float :type rate: str :type framesize: str @@ -406,34 +413,33 @@ class TrafficGenerator(AbstractMeasurer): :type async_call: bool :type latency: bool :type warmup_time: float - :returns: Nothing + :type unidirection: bool + :type tx_port: int + :type rx_port: int :raises RuntimeError: In case of TG driver issue. """ ssh = SSH() ssh.connect(self._node) + reorder = self._ifaces_reordered # Just to make the next line fit. + p_0, p_1 = (rx_port, tx_port) if reorder else (tx_port, rx_port) + command = ( + "sh -c '{tool}/resources/tools/trex/trex_stateless_profile.py" + " --profile {prof}/resources/traffic_profiles/trex/{traffic}.py" + " --duration {duration} --frame_size {framesize} --rate {rate}" + " --warmup_time {warmup} --port_0 {p_0} --port_1 {p_1}").format( + tool=Constants.REMOTE_FW_DIR, prof=Constants.REMOTE_FW_DIR, + traffic=traffic_type, duration=duration, framesize=framesize, + rate=rate, warmup=warmup_time, p_0=p_0, p_1=p_1) + if async_call: + command += " --async" + if latency: + command += " --latency" + if unidirection: + command += " --unidirection" + command += "'" - _async = "--async" if async_call else "" - _latency = "--latency" if latency else "" - _p0, _p1 = (2, 1) if self._ifaces_reordered else (1, 2) - - 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 - format(Constants.REMOTE_FW_DIR, profile_path, duration, framesize, - rate, warmup_time, _p0 - 1, _p1 - 1, _async, _latency), - timeout=float(duration) + 60) + command, timeout=float(duration) + 60) if int(ret) != 0: raise RuntimeError('TRex stateless runtime error') @@ -446,95 +452,15 @@ class TrafficGenerator(AbstractMeasurer): 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]) self._latency.append(self._result.split(', ')[5].split('=')[1]) - def trex_stl_start_unidirection( - self, duration, rate, framesize, traffic_type, async_call=False, - latency=False, warmup_time=5.0, tx_port=0, rx_port=1): - """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 latency: With latency measurement. - :param async_call: If enabled then don't wait for all incomming trafic. - :param warmup_time: Warmup time period. - :param tx_port: Traffic generator transmit port. - :param rx_port: Traffic generator receive port. - :type duration: float - :type rate: str - :type framesize: str - :type traffic_type: str - :type latency: bool - :type async_call: bool - :type warmup_time: float - :type tx_port: integer - :type rx_port: integer - :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]) - def stop_traffic_on_tg(self): """Stop all traffic on TG. @@ -552,6 +478,19 @@ class TrafficGenerator(AbstractMeasurer): rx_port=1): """Send traffic from all configured interfaces on TG. + Note that bidirectional traffic also contains flows + transmitted from rx_port and received in tx_port. + But some tests use asymmetric traffic, so those arguments are relevant. + + Also note that traffic generator uses DPDK driver which might + reorder port numbers based on wiring and PCI numbering. + This method handles that, so argument values are invariant, + but you can see swapped valued in debug logs. + + TODO: Is it better to have less descriptive argument names + just to make them less probable to be viewed as misleading or confusing? + See https://gerrit.fd.io/r/#/c/17625/11/resources/libraries/python/TrafficGenerator.py@406 + :param duration: Duration of test traffic generation in seconds. :param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...). :param framesize: Frame size (L2) in Bytes. @@ -560,9 +499,11 @@ class TrafficGenerator(AbstractMeasurer): :param warmup_time: Warmup phase in seconds. :param async_call: Async mode. :param latency: With latency measurement. - :param unidirection: Traffic is unidirectional. - :param tx_port: Traffic generator transmit port. - :param rx_port: Traffic generator receive port. + :param unidirection: Traffic is unidirectional. Default: False + :param tx_port: Traffic generator transmit port for first flow. + Default: 0 + :param rx_port: Traffic generator receive port for first flow. + Default: 1 :type duration: str :type rate: str :type framesize: str @@ -571,8 +512,8 @@ class TrafficGenerator(AbstractMeasurer): :type async_call: bool :type latency: bool :type unidirection: bool - :type tx_port: integer - :type rx_port: integer + :type tx_port: int + :type rx_port: int :returns: TG output. :rtype: str :raises RuntimeError: If TG is not set, or if node is not TG, @@ -590,15 +531,9 @@ class TrafficGenerator(AbstractMeasurer): if node['subtype'] is None: raise RuntimeError('TG subtype not defined') elif node['subtype'] == NodeSubTypeTG.TREX: - if unidirection: - self.trex_stl_start_unidirection(duration, rate, framesize, - traffic_type, tx_port, - rx_port, async_call, latency, - warmup_time) - else: - self.trex_stl_start_remote_exec(duration, rate, framesize, - traffic_type, async_call, - latency, warmup_time) + self.trex_stl_start_remote_exec( + duration, rate, framesize, traffic_type, async_call, latency, + warmup_time, unidirection, tx_port, rx_port) else: raise NotImplementedError("TG subtype not supported") |