resources/libraries/python/TrafficGenerator.py

   1 # Copyright (c) 2016 Cisco and/or its affiliates.
   2 # Licensed under the Apache License, Version 2.0 (the "License");
   3 # you may not use this file except in compliance with the License.
   4 # You may obtain a copy of the License at:
   5 #
   6 #     http://www.apache.org/licenses/LICENSE-2.0
   7 #
   8 # Unless required by applicable law or agreed to in writing, software
   9 # distributed under the License is distributed on an "AS IS" BASIS,
  10 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  11 # See the License for the specific language governing permissions and
  12 # limitations under the License.
  13
  14 """Performance testing traffic generator library."""
  15
  16 from robot.api import logger
  17 from robot.libraries.BuiltIn import BuiltIn
  18
  19 from resources.libraries.python.constants import Constants
  20 from resources.libraries.python.ssh import SSH
  21 from resources.libraries.python.topology import NodeType
  22 from resources.libraries.python.topology import NodeSubTypeTG
  23 from resources.libraries.python.topology import Topology
  24 from resources.libraries.python.DropRateSearch import DropRateSearch
  25
  26 __all__ = ['TrafficGenerator', 'TGDropRateSearchImpl']
  27
  28
  29 class TGDropRateSearchImpl(DropRateSearch):
  30     """Drop Rate Search implementation."""
  31
  32     def __init__(self):
  33         super(TGDropRateSearchImpl, self).__init__()
  34
  35     def measure_loss(self, rate, frame_size, loss_acceptance,
  36                      loss_acceptance_type, traffic_type):
  37         """Runs the traffic and evaluate the measured results.
  38
  39         :param rate: Offered traffic load.
  40         :param frame_size: Size of frame.
  41         :param loss_acceptance: Permitted drop ratio or frames count.
  42         :param loss_acceptance_type: Type of permitted loss.
  43         :param traffic_type: Traffic profile ([2,3]-node-L[2,3], ...).
  44         :type rate: int
  45         :type frame_size: str
  46         :type loss_acceptance: float
  47         :type loss_acceptance_type: LossAcceptanceType
  48         :type traffic_type: str
  49         :returns: Drop threshold exceeded? (True/False)
  50         :rtype: bool
  51         :raises: NotImplementedError if TG is not supported.
  52         :raises: RuntimeError if TG is not specified.
  53         """
  54         # we need instance of TrafficGenerator instantiated by Robot Framework
  55         # to be able to use trex_stl-*()
  56         tg_instance = BuiltIn().get_library_instance(
  57             'resources.libraries.python.TrafficGenerator')
  58
  59         if tg_instance.node['subtype'] is None:
  60             raise RuntimeError('TG subtype not defined')
  61         elif tg_instance.node['subtype'] == NodeSubTypeTG.TREX:
  62             unit_rate = str(rate) + self.get_rate_type_str()
  63             tg_instance.trex_stl_start_remote_exec(self.get_duration(),
  64                                                    unit_rate, frame_size,
  65                                                    traffic_type)
  66             loss = tg_instance.get_loss()
  67             sent = tg_instance.get_sent()
  68             if self.loss_acceptance_type_is_percentage():
  69                 loss = (float(loss) / float(sent)) * 100
  70
  71             logger.trace("comparing: {} < {} {}".format(loss,
  72                                                         loss_acceptance,
  73                                                         loss_acceptance_type))
  74             if float(loss) > float(loss_acceptance):
  75                 return False
  76             else:
  77                 return True
  78         else:
  79             raise NotImplementedError("TG subtype not supported")
  80
  81     def get_latency(self):
  82         """Returns min/avg/max latency.
  83
  84         :returns: Latency stats.
  85         :rtype: list
  86         """
  87         tg_instance = BuiltIn().get_library_instance(
  88             'resources.libraries.python.TrafficGenerator')
  89         return tg_instance.get_latency_int()
  90
  91
  92 class TrafficGenerator(object):
  93     """Traffic Generator."""
  94
  95     # use one instance of TrafficGenerator for all tests in test suite
  96     ROBOT_LIBRARY_SCOPE = 'TEST SUITE'
  97
  98     def __init__(self):
  99         self._result = None
 100         self._loss = None
 101         self._sent = None
 102         self._latency = None
 103         self._received = None
 104         self._node = None
 105         # T-REX interface order mapping
 106         self._ifaces_reordered = 0
 107
 108     @property
 109     def node(self):
 110         """Getter.
 111
 112         :returns: Traffic generator node.
 113         :rtype: dict
 114         """
 115         return self._node
 116
 117     def get_loss(self):
 118         """Return number of lost packets.
 119
 120         :returns: Number of lost packets.
 121         :rtype: str
 122         """
 123         return self._loss
 124
 125     def get_sent(self):
 126         """Return number of sent packets.
 127
 128         :returns: Number of sent packets.
 129         :rtype: str
 130         """
 131         return self._sent
 132
 133     def get_received(self):
 134         """Return number of received packets.
 135
 136         :returns: Number of received packets.
 137         :rtype: str
 138         """
 139         return self._received
 140
 141     def get_latency_int(self):
 142         """Return rounded min/avg/max latency.
 143
 144         :returns: Latency stats.
 145         :rtype: list
 146         """
 147         return self._latency
 148
 149     def initialize_traffic_generator(self, tg_node, tg_if1, tg_if2,
 150                                      tg_if1_adj_node, tg_if1_adj_if,
 151                                      tg_if2_adj_node, tg_if2_adj_if,
 152                                      test_type,
 153                                      tg_if1_dst_mac=None, tg_if2_dst_mac=None):
 154         """TG initialization.
 155
 156         :param tg_node: Traffic generator node.
 157         :param tg_if1: TG - name of first interface.
 158         :param tg_if2: TG - name of second interface.
 159         :param tg_if1_adj_node: TG if1 adjecent node.
 160         :param tg_if1_adj_if: TG if1 adjecent interface.
 161         :param tg_if2_adj_node: TG if2 adjecent node.
 162         :param tg_if2_adj_if: TG if2 adjecent interface.
 163         :param test_type: 'L2' or 'L3' - src/dst MAC address.
 164         :param tg_if1_dst_mac: Interface 1 destination MAC address.
 165         :param tg_if2_dst_mac: Interface 2 destination MAC address.
 166         :type tg_node: dict
 167         :type tg_if1: str
 168         :type tg_if2: str
 169         :type tg_if1_adj_node: dict
 170         :type tg_if1_adj_if: str
 171         :type tg_if2_adj_node: dict
 172         :type tg_if2_adj_if: str
 173         :type test_type: str
 174         :type tg_if1_dst_mac: str
 175         :type tg_if2_dst_mac: str
 176         :returns: nothing
 177         :raises: RuntimeError in case of issue during initialization.
 178         """
 179
 180         topo = Topology()
 181
 182         if tg_node['type'] != NodeType.TG:
 183             raise RuntimeError('Node type is not a TG')
 184         self._node = tg_node
 185
 186         if tg_node['subtype'] == NodeSubTypeTG.TREX:
 187             trex_path = "/opt/trex-core-2.25"
 188
 189             ssh = SSH()
 190             ssh.connect(tg_node)
 191
 192             (ret, stdout, stderr) = ssh.exec_command(
 193                 "sudo -E sh -c '{}/resources/tools/t-rex/"
 194                 "t-rex-installer.sh'".format(Constants.REMOTE_FW_DIR),
 195                 timeout=1800)
 196             if int(ret) != 0:
 197                 logger.error('trex installation failed: {0}'.format(
 198                     stdout + stderr))
 199                 raise RuntimeError('Installation of TG failed')
 200
 201             if1_pci = topo.get_interface_pci_addr(tg_node, tg_if1)
 202             if2_pci = topo.get_interface_pci_addr(tg_node, tg_if2)
 203             if1_mac = topo.get_interface_mac(tg_node, tg_if1)
 204             if2_mac = topo.get_interface_mac(tg_node, tg_if2)
 205
 206             if test_type == 'L2':
 207                 if1_adj_mac = if2_mac
 208                 if2_adj_mac = if1_mac
 209             elif test_type == 'L3':
 210                 if1_adj_mac = topo.get_interface_mac(tg_if1_adj_node,
 211                                                      tg_if1_adj_if)
 212                 if2_adj_mac = topo.get_interface_mac(tg_if2_adj_node,
 213                                                      tg_if2_adj_if)
 214             else:
 215                 raise ValueError("test_type unknown")
 216
 217             if tg_if1_dst_mac is not None and tg_if2_dst_mac is not None:
 218                 if1_adj_mac = tg_if1_dst_mac
 219                 if2_adj_mac = tg_if2_dst_mac
 220
 221             if min(if1_pci, if2_pci) != if1_pci:
 222                 if1_mac, if2_mac = if2_mac, if1_mac
 223                 if1_pci, if2_pci = if2_pci, if1_pci
 224                 if1_adj_mac, if2_adj_mac = if2_adj_mac, if1_adj_mac
 225                 self._ifaces_reordered = 1
 226
 227             if1_mac_hex = "0x"+if1_mac.replace(":", ",0x")
 228             if2_mac_hex = "0x"+if2_mac.replace(":", ",0x")
 229             if1_adj_mac_hex = "0x"+if1_adj_mac.replace(":", ",0x")
 230             if2_adj_mac_hex = "0x"+if2_adj_mac.replace(":", ",0x")
 231
 232             (ret, stdout, stderr) = ssh.exec_command(
 233                 "sudo sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
 234                 "- port_limit      : 2\n"
 235                 "  version         : 2\n"
 236                 "  interfaces      : [\"{}\",\"{}\"]\n"
 237                 "  port_info       :\n"
 238                 "          - dest_mac        :   [{}]\n"
 239                 "            src_mac         :   [{}]\n"
 240                 "          - dest_mac        :   [{}]\n"
 241                 "            src_mac         :   [{}]\n"
 242                 "EOF'"\
 243                 .format(if1_pci, if2_pci,
 244                         if1_adj_mac_hex, if1_mac_hex,
 245                         if2_adj_mac_hex, if2_mac_hex))
 246             if int(ret) != 0:
 247                 logger.error("failed to create t-rex config: {}"\
 248                 .format(stdout + stderr))
 249                 raise RuntimeError('trex config generation error')
 250
 251             max_startup_retries = 3
 252             while max_startup_retries > 0:
 253                 # kill T-rex only if it is already running
 254                 (ret, _, _) = ssh.exec_command(
 255                     "sh -c 'pgrep t-rex && sudo pkill t-rex && sleep 3'")
 256
 257                 # configure T-rex
 258                 (ret, stdout, stderr) = ssh.exec_command(
 259                     "sh -c 'cd {0}/scripts/ && sudo ./trex-cfg'"\
 260                     .format(trex_path))
 261                 if int(ret) != 0:
 262                     logger.error('trex-cfg failed: {0}'.format(stdout + stderr))
 263                     raise RuntimeError('trex-cfg failed')
 264
 265                 # start T-rex
 266                 (ret, _, _) = ssh.exec_command(
 267                     "sh -c 'cd {0}/scripts/ && "
 268                     "sudo nohup ./t-rex-64 -i -c 7 --iom 0 > /dev/null 2>&1 &'"
 269                     "> /dev/null"\
 270                     .format(trex_path))
 271                 if int(ret) != 0:
 272                     raise RuntimeError('t-rex-64 startup failed')
 273
 274                 # get T-rex server info
 275                 (ret, _, _) = ssh.exec_command(
 276                     "sh -c 'sleep 3; "
 277                     "{0}/resources/tools/t-rex/t-rex-server-info.py'"\
 278                     .format(Constants.REMOTE_FW_DIR),
 279                     timeout=120)
 280                 if int(ret) == 0:
 281                     # If we get info T-rex is running
 282                     return
 283                 # try again
 284                 max_startup_retries -= 1
 285             # after max retries T-rex is still not responding to API
 286             # critical error occured
 287             raise RuntimeError('t-rex-64 startup failed')
 288
 289     @staticmethod
 290     def teardown_traffic_generator(node):
 291         """TG teardown.
 292
 293         :param node: Traffic generator node.
 294         :type node: dict
 295         :returns: nothing
 296         :raises: RuntimeError if T-rex teardown failed.
 297         :raises: RuntimeError if node type is not a TG.
 298         """
 299         if node['type'] != NodeType.TG:
 300             raise RuntimeError('Node type is not a TG')
 301         if node['subtype'] == NodeSubTypeTG.TREX:
 302             ssh = SSH()
 303             ssh.connect(node)
 304             (ret, stdout, stderr) = ssh.exec_command(
 305                 "sh -c 'sudo pkill t-rex && sleep 3'")
 306             if int(ret) != 0:
 307                 logger.error('pkill t-rex failed: {0}'.format(stdout + stderr))
 308                 raise RuntimeError('pkill t-rex failed')
 309
 310     @staticmethod
 311     def trex_stl_stop_remote_exec(node):
 312         """Execute script on remote node over ssh to stop running traffic.
 313
 314         :param node: T-REX generator node.
 315         :type node: dict
 316         :returns: Nothing
 317         :raises: RuntimeError if stop traffic script fails.
 318         """
 319         ssh = SSH()
 320         ssh.connect(node)
 321
 322         (ret, stdout, stderr) = ssh.exec_command(
 323             "sh -c '{}/resources/tools/t-rex/"
 324             "t-rex-stateless-stop.py'".format(Constants.REMOTE_FW_DIR))
 325
 326         if int(ret) != 0:
 327             raise RuntimeError('T-rex stateless runtime error')
 328
 329     def trex_stl_start_remote_exec(self, duration, rate, framesize,
 330                                    traffic_type, async_call=False,
 331                                    latency=True, warmup_time=5):
 332         """Execute script on remote node over ssh to start traffic.
 333
 334         :param duration: Time expresed in seconds for how long to send traffic.
 335         :param rate: Traffic rate expressed with units (pps, %)
 336         :param framesize: L2 frame size to send (without padding and IPG).
 337         :param traffic_type: Traffic profile.
 338         :param async_call: If enabled then don't wait for all incomming trafic.
 339         :param latency: With latency measurement.
 340         :param warmup_time: Warmup time period.
 341         :type duration: int
 342         :type rate: str
 343         :type framesize: int
 344         :type traffic_type: str
 345         :type async_call: bool
 346         :type latency: bool
 347         :type warmup_time: int
 348         :returns: Nothing
 349         :raises: NotImplementedError if traffic type is not supported.
 350         :raises: RuntimeError in case of TG driver issue.
 351         """
 352         ssh = SSH()
 353         ssh.connect(self._node)
 354
 355         _p0 = 1
 356         _p1 = 2
 357         _async = "--async" if async_call else ""
 358         _latency = "--latency" if latency else ""
 359
 360         if self._ifaces_reordered != 0:
 361             _p0, _p1 = _p1, _p0
 362
 363         if traffic_type in ["3-node-xconnect", "3-node-bridge"]:
 364             (ret, stdout, stderr) = ssh.exec_command(
 365                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 366                 "--duration={1} -r {2} -s {3} "
 367                 "--p{4}_src_start_ip 10.10.10.1 "
 368                 "--p{4}_src_end_ip 10.10.10.254 "
 369                 "--p{4}_dst_start_ip 20.20.20.1 "
 370                 "--p{5}_src_start_ip 20.20.20.1 "
 371                 "--p{5}_src_end_ip 20.20.20.254 "
 372                 "--p{5}_dst_start_ip 10.10.10.1 "
 373                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 374                                                     duration, rate, framesize,
 375                                                     _p0, _p1, _async, _latency,
 376                                                     warmup_time),
 377                 timeout=int(duration)+60)
 378         elif traffic_type in ["3-node-IPv4"]:
 379             (ret, stdout, stderr) = ssh.exec_command(
 380                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 381                 "--duration={1} -r {2} -s {3} "
 382                 "--p{4}_src_start_ip 10.10.10.2 "
 383                 "--p{4}_src_end_ip 10.10.10.254 "
 384                 "--p{4}_dst_start_ip 20.20.20.2 "
 385                 "--p{5}_src_start_ip 20.20.20.2 "
 386                 "--p{5}_src_end_ip 20.20.20.254 "
 387                 "--p{5}_dst_start_ip 10.10.10.2 "
 388                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 389                                                     duration, rate, framesize,
 390                                                     _p0, _p1, _async, _latency,
 391                                                     warmup_time),
 392                 timeout=int(duration)+60)
 393         elif traffic_type in ["3-node-IPv4-dst-1"]:
 394             (ret, stdout, stderr) = ssh.exec_command(
 395                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 396                 "--duration={1} -r {2} -s {3} "
 397                 "--p{4}_src_start_ip 10.0.0.1 "
 398                 "--p{4}_dst_start_ip 20.0.0.0 "
 399                 "--p{4}_dst_end_ip 20.0.0.0 "
 400                 "--p{5}_src_start_ip 20.0.0.1 "
 401                 "--p{5}_dst_start_ip 10.0.0.0 "
 402                 "--p{5}_dst_end_ip 10.0.0.0 "
 403                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 404                                                     duration, rate, framesize,
 405                                                     _p0, _p1, _async, _latency,
 406                                                     warmup_time),
 407                 timeout=int(duration)+60)
 408         elif traffic_type in ["3-node-IPv4-dst-100"]:
 409             (ret, stdout, stderr) = ssh.exec_command(
 410                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 411                 "--duration={1} -r {2} -s {3} "
 412                 "--p{4}_src_start_ip 10.0.0.1 "
 413                 "--p{4}_dst_start_ip 20.0.0.0 "
 414                 "--p{4}_dst_end_ip 20.0.0.99 "
 415                 "--p{5}_src_start_ip 20.0.0.1 "
 416                 "--p{5}_dst_start_ip 10.0.0.0 "
 417                 "--p{5}_dst_end_ip 10.0.0.99 "
 418                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 419                                                     duration, rate, framesize,
 420                                                     _p0, _p1, _async, _latency,
 421                                                     warmup_time),
 422                 timeout=int(duration)+60)
 423         elif traffic_type in ["3-node-IPv4-dst-1000"]:
 424             (ret, stdout, stderr) = ssh.exec_command(
 425                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 426                 "--duration={1} -r {2} -s {3} "
 427                 "--p{4}_src_start_ip 10.0.0.1 "
 428                 "--p{4}_dst_start_ip 20.0.0.0 "
 429                 "--p{4}_dst_end_ip 20.0.3.231 "
 430                 "--p{5}_src_start_ip 20.0.0.1 "
 431                 "--p{5}_dst_start_ip 10.0.0.0 "
 432                 "--p{5}_dst_end_ip 10.0.3.231 "
 433                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 434                                                     duration, rate, framesize,
 435                                                     _p0, _p1, _async, _latency,
 436                                                     warmup_time),
 437                 timeout=int(duration)+60)
 438
 439         elif traffic_type in ["3-node-IPv4-SNAT-1u-1p"]:
 440             (ret, stdout, stderr) = ssh.exec_command(
 441                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 442                 "--duration={1} -r {2} -s {3} "
 443                 "--p{4}_src_start_ip 20.0.0.0 "
 444                 "--p{4}_src_end_ip 20.0.0.0 "
 445                 "--p{4}_dst_start_ip 12.0.0.2 "
 446                 "--p{5}_src_start_ip 12.0.0.2 "
 447                 "--p{5}_src_end_ip 12.0.0.2 "
 448                 "--p{5}_dst_start_ip 200.0.0.0 "
 449                 "--p{4}_src_start_udp_port 1024 "
 450                 "--p{4}_src_end_udp_port 1024 "
 451                 "--p{4}_dst_start_udp_port 1024 "
 452                 "--p{5}_src_start_udp_port 1024 "
 453                 "--p{5}_dst_start_udp_port 1028 "
 454                 "--p{5}_dst_end_udp_port 1028 "
 455                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 456                                                     duration, rate, framesize,
 457                                                     _p0, _p1, _async, _latency,
 458                                                     warmup_time),
 459                 timeout=int(duration)+60)
 460
 461         elif traffic_type in ["3-node-IPv4-SNAT-1u-15p"]:
 462             (ret, stdout, stderr) = ssh.exec_command(
 463                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 464                 "--duration={1} -r {2} -s {3} "
 465                 "--p{4}_src_start_ip 20.0.0.0 "
 466                 "--p{4}_src_end_ip 20.0.0.0 "
 467                 "--p{4}_dst_start_ip 12.0.0.2 "
 468                 "--p{5}_src_start_ip 12.0.0.2 "
 469                 "--p{5}_src_end_ip 12.0.0.2 "
 470                 "--p{5}_dst_start_ip 200.0.0.0 "
 471                 "--p{4}_src_start_udp_port 1024 "
 472                 "--p{4}_src_end_udp_port 1038 "
 473                 "--p{4}_dst_start_udp_port 1024 "
 474                 "--p{5}_src_start_udp_port 1024 "
 475                 "--p{5}_dst_start_udp_port 1024 "
 476                 "--p{5}_dst_end_udp_port 1038 "
 477                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 478                                                     duration, rate, framesize,
 479                                                     _p0, _p1, _async, _latency,
 480                                                     warmup_time),
 481                 timeout=int(duration)+60)
 482
 483         elif traffic_type in ["3-node-IPv4-SNAT-10u-15p"]:
 484             (ret, stdout, stderr) = ssh.exec_command(
 485                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 486                 "--duration={1} -r {2} -s {3} "
 487                 "--p{4}_src_start_ip 20.0.0.0 "
 488                 "--p{4}_src_end_ip 20.0.0.9 "
 489                 "--p{4}_dst_start_ip 12.0.0.2 "
 490                 "--p{5}_src_start_ip 12.0.0.2 "
 491                 "--p{5}_src_end_ip 12.0.0.2 "
 492                 "--p{5}_dst_start_ip 200.0.0.0 "
 493                 "--p{4}_src_start_udp_port 1024 "
 494                 "--p{4}_src_end_udp_port 1038 "
 495                 "--p{4}_dst_start_udp_port 1024 "
 496                 "--p{5}_src_start_udp_port 1024 "
 497                 "--p{5}_dst_start_udp_port 1024 "
 498                 "--p{5}_dst_end_udp_port 1173 "
 499                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 500                                                     duration, rate, framesize,
 501                                                     _p0, _p1, _async, _latency,
 502                                                     warmup_time),
 503                 timeout=int(duration)+60)
 504
 505         elif traffic_type in ["3-node-IPv4-SNAT-100u-15p"]:
 506             (ret, stdout, stderr) = ssh.exec_command(
 507                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 508                 "--duration={1} -r {2} -s {3} "
 509                 "--p{4}_src_start_ip 20.0.0.0 "
 510                 "--p{4}_src_end_ip 20.0.0.99 "
 511                 "--p{4}_dst_start_ip 12.0.0.2 "
 512                 "--p{5}_src_start_ip 12.0.0.2 "
 513                 "--p{5}_src_end_ip 12.0.0.2 "
 514                 "--p{5}_dst_start_ip 200.0.0.0 "
 515                 "--p{4}_src_start_udp_port 1024 "
 516                 "--p{4}_src_end_udp_port 1038 "
 517                 "--p{4}_dst_start_udp_port 1024 "
 518                 "--p{5}_src_start_udp_port 1024 "
 519                 "--p{5}_dst_start_udp_port 1024 "
 520                 "--p{5}_dst_end_udp_port 2523 "
 521                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 522                                                     duration, rate, framesize,
 523                                                     _p0, _p1, _async, _latency,
 524                                                     warmup_time),
 525                 timeout=int(duration) + 60)
 526
 527         elif traffic_type in ["3-node-IPv4-SNAT-1000u-15p"]:
 528             (ret, stdout, stderr) = ssh.exec_command(
 529                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 530                 "--duration={1} -r {2} -s {3} "
 531                 "--p{4}_src_start_ip 20.0.0.0 "
 532                 "--p{4}_src_end_ip 20.0.3.231 "
 533                 "--p{4}_dst_start_ip 12.0.0.2 "
 534                 "--p{5}_src_start_ip 12.0.0.2 "
 535                 "--p{5}_src_end_ip 12.0.0.2 "
 536                 "--p{5}_dst_start_ip 200.0.0.0 "
 537                 "--p{4}_src_start_udp_port 1024 "
 538                 "--p{4}_src_end_udp_port 1038 "
 539                 "--p{4}_dst_start_udp_port 1024 "
 540                 "--p{5}_src_start_udp_port 1024 "
 541                 "--p{5}_dst_start_udp_port 1024 "
 542                 "--p{5}_dst_end_udp_port 16023 "
 543                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 544                                                     duration, rate, framesize,
 545                                                     _p0, _p1, _async, _latency,
 546                                                     warmup_time),
 547                 timeout=int(duration)+60)
 548
 549         elif traffic_type in ["3-node-IPv4-SNAT-2000u-15p"]:
 550             (ret, stdout, stderr) = ssh.exec_command(
 551                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 552                 "--duration={1} -r {2} -s {3} "
 553                 "--p{4}_src_start_ip 20.0.0.0 "
 554                 "--p{4}_src_end_ip 20.0.7.207 "
 555                 "--p{4}_dst_start_ip 12.0.0.2 "
 556                 "--p{5}_src_start_ip 12.0.0.2 "
 557                 "--p{5}_src_end_ip 12.0.0.2 "
 558                 "--p{5}_dst_start_ip 200.0.0.0 "
 559                 "--p{4}_src_start_udp_port 1024 "
 560                 "--p{4}_src_end_udp_port 1038 "
 561                 "--p{4}_dst_start_udp_port 1024 "
 562                 "--p{5}_src_start_udp_port 1024 "
 563                 "--p{5}_dst_start_udp_port 1024 "
 564                 "--p{5}_dst_end_udp_port 31022 "
 565                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 566                                                     duration, rate, framesize,
 567                                                     _p0, _p1, _async, _latency,
 568                                                     warmup_time),
 569                 timeout=int(duration)+60)
 570
 571         elif traffic_type in ["3-node-IPv4-SNAT-4000u-15p"]:
 572             (ret, stdout, stderr) = ssh.exec_command(
 573                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 574                 "--duration={1} -r {2} -s {3} "
 575                 "--p{4}_src_start_ip 20.0.0.0 "
 576                 "--p{4}_src_end_ip 20.0.15.159 "
 577                 "--p{4}_dst_start_ip 12.0.0.2 "
 578                 "--p{5}_src_start_ip 12.0.0.2 "
 579                 "--p{5}_src_end_ip 12.0.0.2 "
 580                 "--p{5}_dst_start_ip 200.0.0.0 "
 581                 "--p{4}_src_start_udp_port 1024 "
 582                 "--p{4}_src_end_udp_port 1038 "
 583                 "--p{4}_dst_start_udp_port 1024 "
 584                 "--p{5}_src_start_udp_port 1024 "
 585                 "--p{5}_dst_start_udp_port 1024 "
 586                 "--p{5}_dst_end_udp_port 61022 "
 587                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 588                                                     duration, rate, framesize,
 589                                                     _p0, _p1, _async, _latency,
 590                                                     warmup_time),
 591                 timeout=int(duration)+60)
 592
 593         elif traffic_type in ["3-node-IPv4-dst-10000"]:
 594             (ret, stdout, stderr) = ssh.exec_command(
 595                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 596                 "--duration={1} -r {2} -s {3} "
 597                 "--p{4}_src_start_ip 10.0.0.1 "
 598                 "--p{4}_dst_start_ip 20.0.0.0 "
 599                 "--p{4}_dst_end_ip 20.0.39.15 "
 600                 "--p{5}_src_start_ip 20.0.0.1 "
 601                 "--p{5}_dst_start_ip 10.0.0.0 "
 602                 "--p{5}_dst_end_ip 10.0.39.15 "
 603                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 604                                                     duration, rate, framesize,
 605                                                     _p0, _p1, _async, _latency,
 606                                                     warmup_time),
 607                 timeout=int(duration)+60)
 608         elif traffic_type in ["3-node-IPv4-dst-100000"]:
 609             (ret, stdout, stderr) = ssh.exec_command(
 610                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 611                 "--duration={1} -r {2} -s {3} "
 612                 "--p{4}_src_start_ip 10.0.0.1 "
 613                 "--p{4}_dst_start_ip 20.0.0.0 "
 614                 "--p{4}_dst_end_ip 20.1.134.159 "
 615                 "--p{5}_src_start_ip 20.0.0.1 "
 616                 "--p{5}_dst_start_ip 10.0.0.0 "
 617                 "--p{5}_dst_end_ip 10.1.134.159 "
 618                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 619                                                     duration, rate, framesize,
 620                                                     _p0, _p1, _async, _latency,
 621                                                     warmup_time),
 622                 timeout=int(duration)+60)
 623         elif traffic_type in ["3-node-IPv4-dst-1000000"]:
 624             (ret, stdout, stderr) = ssh.exec_command(
 625                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 626                 "--duration={1} -r {2} -s {3} "
 627                 "--p{4}_src_start_ip 10.0.0.1 "
 628                 "--p{4}_dst_start_ip 20.0.0.0 "
 629                 "--p{4}_dst_end_ip 20.15.66.63 "
 630                 "--p{5}_src_start_ip 20.0.0.1 "
 631                 "--p{5}_dst_start_ip 10.0.0.0 "
 632                 "--p{5}_dst_end_ip 10.15.66.63 "
 633                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 634                                                     duration, rate, framesize,
 635                                                     _p0, _p1, _async, _latency,
 636                                                     warmup_time),
 637                 timeout=int(duration)+60)
 638         elif traffic_type in ["3-node-IPv6"]:
 639             (ret, stdout, stderr) = ssh.exec_command(
 640                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 641                 "--duration={1} -r {2} -s {3} -6 "
 642                 "--p{4}_src_start_ip 2001:1::2 "
 643                 "--p{4}_src_end_ip 2001:1::FE "
 644                 "--p{4}_dst_start_ip 2001:2::2 "
 645                 "--p{5}_src_start_ip 2001:2::2 "
 646                 "--p{5}_src_end_ip 2001:2::FE "
 647                 "--p{5}_dst_start_ip 2001:1::2 "
 648                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 649                                                     duration, rate, framesize,
 650                                                     _p0, _p1, _async, _latency,
 651                                                     warmup_time),
 652                 timeout=int(duration)+60)
 653         elif traffic_type in ["3-node-IPv6-dst-10000"]:
 654             (ret, stdout, stderr) = ssh.exec_command(
 655                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 656                 "--duration={1} -r {2} -s {3} -6 "
 657                 "--p{4}_src_start_ip 2001:1::1 "
 658                 "--p{4}_dst_start_ip 2001:2::0 "
 659                 "--p{4}_dst_end_ip 2001:2::270F "
 660                 "--p{5}_src_start_ip 2001:2::1 "
 661                 "--p{5}_dst_start_ip 2001:1::0 "
 662                 "--p{5}_dst_end_ip 2001:1::270F "
 663                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 664                                                     duration, rate, framesize,
 665                                                     _p0, _p1, _async, _latency,
 666                                                     warmup_time),
 667                 timeout=int(duration)+60)
 668         elif traffic_type in ["3-node-IPv6-dst-100000"]:
 669             (ret, stdout, stderr) = ssh.exec_command(
 670                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 671                 "--duration={1} -r {2} -s {3} -6 "
 672                 "--p{4}_src_start_ip 2001:1::1 "
 673                 "--p{4}_dst_start_ip 2001:2::0 "
 674                 "--p{4}_dst_end_ip 2001:2::1:869F "
 675                 "--p{5}_src_start_ip 2001:2::1 "
 676                 "--p{5}_dst_start_ip 2001:1::0 "
 677                 "--p{5}_dst_end_ip 2001:1::1:869F "
 678                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 679                                                     duration, rate, framesize,
 680                                                     _p0, _p1, _async, _latency,
 681                                                     warmup_time),
 682                 timeout=int(duration)+60)
 683         elif traffic_type in ["3-node-IPv6-dst-1000000"]:
 684             (ret, stdout, stderr) = ssh.exec_command(
 685                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 686                 "--duration={1} -r {2} -s {3} -6 "
 687                 "--p{4}_src_start_ip 2001:1::1 "
 688                 "--p{4}_dst_start_ip 2001:2::0 "
 689                 "--p{4}_dst_end_ip 2001:2::F:423F "
 690                 "--p{5}_src_start_ip 2001:2::1 "
 691                 "--p{5}_dst_start_ip 2001:1::0 "
 692                 "--p{5}_dst_end_ip 2001:1::F:423F "
 693                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 694                                                     duration, rate, framesize,
 695                                                     _p0, _p1, _async, _latency,
 696                                                     warmup_time),
 697                 timeout=int(duration)+60)
 698         elif traffic_type in ["2-node-bridge"]:
 699             (ret, stdout, stderr) = ssh.exec_command(
 700                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 701                 "--duration={1} -r {2} -s {3} "
 702                 "--p{4}_src_start_ip 10.10.10.2 "
 703                 "--p{4}_src_end_ip 10.10.10.254 "
 704                 "--p{4}_dst_start_ip 20.20.20.2 "
 705                 "--p{5}_src_start_ip 20.20.20.2 "
 706                 "--p{5}_src_end_ip 20.20.20.254 "
 707                 "--p{5}_dst_start_ip 10.10.10.2 "
 708                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 709                                                     duration, rate, framesize,
 710                                                     _p0, _p1, _async, _latency,
 711                                                     warmup_time),
 712                 timeout=int(duration) + 60)
 713         else:
 714             raise NotImplementedError('Unsupported traffic type')
 715
 716         if int(ret) != 0:
 717             raise RuntimeError('T-rex stateless runtime error')
 718         elif async_call:
 719             #no result
 720             self._received = None
 721             self._sent = None
 722             self._loss = None
 723             self._latency = None
 724         else:
 725             # last line from console output
 726             line = stdout.splitlines()[-1]
 727
 728             self._result = line
 729             logger.info('TrafficGen result: {0}'.format(self._result))
 730
 731             self._received = self._result.split(', ')[1].split('=')[1]
 732             self._sent = self._result.split(', ')[2].split('=')[1]
 733             self._loss = self._result.split(', ')[3].split('=')[1]
 734
 735             self._latency = []
 736             self._latency.append(self._result.split(', ')[4].split('=')[1])
 737             self._latency.append(self._result.split(', ')[5].split('=')[1])
 738
 739     def stop_traffic_on_tg(self):
 740         """Stop all traffic on TG.
 741
 742         :returns: Nothing
 743         :raises: RuntimeError if TG is not set.
 744         """
 745         if self._node is None:
 746             raise RuntimeError("TG is not set")
 747         if self._node['subtype'] == NodeSubTypeTG.TREX:
 748             self.trex_stl_stop_remote_exec(self._node)
 749
 750     def send_traffic_on_tg(self, duration, rate, framesize,
 751                            traffic_type, warmup_time=5, async_call=False,
 752                            latency=True):
 753         """Send traffic from all configured interfaces on TG.
 754
 755         :param duration: Duration of test traffic generation in seconds.
 756         :param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...).
 757         :param framesize: Frame size (L2) in Bytes.
 758         :param traffic_type: Traffic profile.
 759         :param warmup_time: Warmup phase in seconds.
 760         :param async_call: Async mode.
 761         :param latency: With latency measurement.
 762         :type duration: str
 763         :type rate: str
 764         :type framesize: str
 765         :type traffic_type: str
 766         :type warmup_time: int
 767         :type async_call: bool
 768         :type latency: bool
 769         :returns: TG output.
 770         :rtype: str
 771         :raises: RuntimeError if TG is not set.
 772         :raises: RuntimeError if node is not TG or subtype is not specified.
 773         :raises: NotImplementedError if TG is not supported.
 774         """
 775
 776         node = self._node
 777         if node is None:
 778             raise RuntimeError("TG is not set")
 779
 780         if node['type'] != NodeType.TG:
 781             raise RuntimeError('Node type is not a TG')
 782
 783         if node['subtype'] is None:
 784             raise RuntimeError('TG subtype not defined')
 785         elif node['subtype'] == NodeSubTypeTG.TREX:
 786             self.trex_stl_start_remote_exec(duration, rate, framesize,
 787                                             traffic_type, async_call, latency,
 788                                             warmup_time=warmup_time)
 789         else:
 790             raise NotImplementedError("TG subtype not supported")
 791
 792         return self._result
 793
 794     def no_traffic_loss_occurred(self):
 795         """Fail if loss occurred in traffic run.
 796
 797         :returns: nothing
 798         :raises: Exception if loss occured.
 799         """
 800         if self._loss is None:
 801             raise Exception('The traffic generation has not been issued')
 802         if self._loss != '0':
 803             raise Exception('Traffic loss occurred: {0}'.format(self._loss))
 804
 805     def partial_traffic_loss_accepted(self, loss_acceptance,
 806                                       loss_acceptance_type):
 807         """Fail if loss is higher then accepted in traffic run.
 808
 809         :param loss_acceptance: Permitted drop ratio or frames count.
 810         :param loss_acceptance_type: Type of permitted loss.
 811         :type loss_acceptance: float
 812         :type loss_acceptance_type: LossAcceptanceType
 813         :returns: nothing
 814         :raises: Exception if loss is above acceptance criteria.
 815         """
 816         if self._loss is None:
 817             raise Exception('The traffic generation has not been issued')
 818
 819         if loss_acceptance_type == 'percentage':
 820             loss = (float(self._loss) / float(self._sent)) * 100
 821         elif loss_acceptance_type == 'frames':
 822             loss = float(self._loss)
 823         else:
 824             raise Exception('Loss acceptance type not supported')
 825
 826         if loss > float(loss_acceptance):
 827             raise Exception("Traffic loss {} above loss acceptance: {}".format(
 828                 loss, loss_acceptance))