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-2.22"
 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         logger.trace(ret)
 326         logger.trace(stdout)
 327         logger.trace(stderr)
 328
 329         if int(ret) != 0:
 330             raise RuntimeError('T-rex stateless runtime error')
 331
 332     def trex_stl_start_remote_exec(self, duration, rate, framesize,
 333                                    traffic_type, async_call=False,
 334                                    latency=True, warmup_time=5):
 335         """Execute script on remote node over ssh to start traffic.
 336
 337         :param duration: Time expresed in seconds for how long to send traffic.
 338         :param rate: Traffic rate expressed with units (pps, %)
 339         :param framesize: L2 frame size to send (without padding and IPG).
 340         :param traffic_type: Traffic profile.
 341         :param async_call: If enabled then don't wait for all incomming trafic.
 342         :param latency: With latency measurement.
 343         :param warmup_time: Warmup time period.
 344         :type duration: int
 345         :type rate: str
 346         :type framesize: int
 347         :type traffic_type: str
 348         :type async_call: bool
 349         :type latency: bool
 350         :type warmup_time: int
 351         :returns: Nothing
 352         :raises: NotImplementedError if traffic type is not supported.
 353         :raises: RuntimeError in case of TG driver issue.
 354         """
 355         ssh = SSH()
 356         ssh.connect(self._node)
 357
 358         _p0 = 1
 359         _p1 = 2
 360         _async = "--async" if async_call else ""
 361         _latency = "--latency" if latency else ""
 362
 363         if self._ifaces_reordered != 0:
 364             _p0, _p1 = _p1, _p0
 365
 366         if traffic_type in ["3-node-xconnect", "3-node-bridge"]:
 367             (ret, stdout, stderr) = ssh.exec_command(
 368                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 369                 "--duration={1} -r {2} -s {3} "
 370                 "--p{4}_src_start_ip 10.10.10.1 "
 371                 "--p{4}_src_end_ip 10.10.10.254 "
 372                 "--p{4}_dst_start_ip 20.20.20.1 "
 373                 "--p{5}_src_start_ip 20.20.20.1 "
 374                 "--p{5}_src_end_ip 20.20.20.254 "
 375                 "--p{5}_dst_start_ip 10.10.10.1 "
 376                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 377                                                     duration, rate, framesize,
 378                                                     _p0, _p1, _async, _latency,
 379                                                     warmup_time),
 380                 timeout=int(duration)+60)
 381         elif traffic_type in ["3-node-IPv4"]:
 382             (ret, stdout, stderr) = ssh.exec_command(
 383                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 384                 "--duration={1} -r {2} -s {3} "
 385                 "--p{4}_src_start_ip 10.10.10.2 "
 386                 "--p{4}_src_end_ip 10.10.10.254 "
 387                 "--p{4}_dst_start_ip 20.20.20.2 "
 388                 "--p{5}_src_start_ip 20.20.20.2 "
 389                 "--p{5}_src_end_ip 20.20.20.254 "
 390                 "--p{5}_dst_start_ip 10.10.10.2 "
 391                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 392                                                     duration, rate, framesize,
 393                                                     _p0, _p1, _async, _latency,
 394                                                     warmup_time),
 395                 timeout=int(duration)+60)
 396         elif traffic_type in ["3-node-IPv4-dst-1"]:
 397             (ret, stdout, stderr) = ssh.exec_command(
 398                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 399                 "--duration={1} -r {2} -s {3} "
 400                 "--p{4}_src_start_ip 10.0.0.1 "
 401                 "--p{4}_dst_start_ip 20.0.0.0 "
 402                 "--p{4}_dst_end_ip 20.0.0.0 "
 403                 "--p{5}_src_start_ip 20.0.0.1 "
 404                 "--p{5}_dst_start_ip 10.0.0.0 "
 405                 "--p{5}_dst_end_ip 10.0.0.0 "
 406                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 407                                                     duration, rate, framesize,
 408                                                     _p0, _p1, _async, _latency,
 409                                                     warmup_time),
 410                 timeout=int(duration)+60)
 411         elif traffic_type in ["3-node-IPv4-dst-100"]:
 412             (ret, stdout, stderr) = ssh.exec_command(
 413                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 414                 "--duration={1} -r {2} -s {3} "
 415                 "--p{4}_src_start_ip 10.0.0.1 "
 416                 "--p{4}_dst_start_ip 20.0.0.0 "
 417                 "--p{4}_dst_end_ip 20.0.0.99 "
 418                 "--p{5}_src_start_ip 20.0.0.1 "
 419                 "--p{5}_dst_start_ip 10.0.0.0 "
 420                 "--p{5}_dst_end_ip 10.0.0.99 "
 421                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 422                                                     duration, rate, framesize,
 423                                                     _p0, _p1, _async, _latency,
 424                                                     warmup_time),
 425                 timeout=int(duration)+60)
 426         elif traffic_type in ["3-node-IPv4-dst-1000"]:
 427             (ret, stdout, stderr) = ssh.exec_command(
 428                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 429                 "--duration={1} -r {2} -s {3} "
 430                 "--p{4}_src_start_ip 10.0.0.1 "
 431                 "--p{4}_dst_start_ip 20.0.0.0 "
 432                 "--p{4}_dst_end_ip 20.0.3.231 "
 433                 "--p{5}_src_start_ip 20.0.0.1 "
 434                 "--p{5}_dst_start_ip 10.0.0.0 "
 435                 "--p{5}_dst_end_ip 10.0.3.231 "
 436                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 437                                                     duration, rate, framesize,
 438                                                     _p0, _p1, _async, _latency,
 439                                                     warmup_time),
 440                 timeout=int(duration)+60)
 441
 442         elif traffic_type in ["3-node-IPv4-SNAT-1u-1p"]:
 443             (ret, stdout, stderr) = ssh.exec_command(
 444                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 445                 "--duration={1} -r {2} -s {3} "
 446                 "--p{4}_src_start_ip 20.0.0.0 "
 447                 "--p{4}_src_end_ip 20.0.0.0 "
 448                 "--p{4}_dst_start_ip 12.0.0.2 "
 449                 "--p{5}_src_start_ip 12.0.0.2 "
 450                 "--p{5}_src_end_ip 12.0.0.2 "
 451                 "--p{5}_dst_start_ip 200.0.0.0 "
 452                 "--p{4}_src_start_udp_port 1024 "
 453                 "--p{4}_src_end_udp_port 1024 "
 454                 "--p{4}_dst_start_udp_port 1024 "
 455                 "--p{5}_src_start_udp_port 1024 "
 456                 "--p{5}_dst_start_udp_port 1028 "
 457                 "--p{5}_dst_end_udp_port 1028 "
 458                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 459                                                     duration, rate, framesize,
 460                                                     _p0, _p1, _async, _latency,
 461                                                     warmup_time),
 462                 timeout=int(duration)+60)
 463
 464         elif traffic_type in ["3-node-IPv4-SNAT-1u-15p"]:
 465             (ret, stdout, stderr) = ssh.exec_command(
 466                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 467                 "--duration={1} -r {2} -s {3} "
 468                 "--p{4}_src_start_ip 20.0.0.0 "
 469                 "--p{4}_src_end_ip 20.0.0.0 "
 470                 "--p{4}_dst_start_ip 12.0.0.2 "
 471                 "--p{5}_src_start_ip 12.0.0.2 "
 472                 "--p{5}_src_end_ip 12.0.0.2 "
 473                 "--p{5}_dst_start_ip 200.0.0.0 "
 474                 "--p{4}_src_start_udp_port 1024 "
 475                 "--p{4}_src_end_udp_port 1038 "
 476                 "--p{4}_dst_start_udp_port 1024 "
 477                 "--p{5}_src_start_udp_port 1024 "
 478                 "--p{5}_dst_start_udp_port 1024 "
 479                 "--p{5}_dst_end_udp_port 1038 "
 480                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 481                                                     duration, rate, framesize,
 482                                                     _p0, _p1, _async, _latency,
 483                                                     warmup_time),
 484                 timeout=int(duration)+60)
 485
 486         elif traffic_type in ["3-node-IPv4-SNAT-10u-15p"]:
 487             (ret, stdout, stderr) = ssh.exec_command(
 488                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 489                 "--duration={1} -r {2} -s {3} "
 490                 "--p{4}_src_start_ip 20.0.0.0 "
 491                 "--p{4}_src_end_ip 20.0.0.9 "
 492                 "--p{4}_dst_start_ip 12.0.0.2 "
 493                 "--p{5}_src_start_ip 12.0.0.2 "
 494                 "--p{5}_src_end_ip 12.0.0.2 "
 495                 "--p{5}_dst_start_ip 200.0.0.0 "
 496                 "--p{4}_src_start_udp_port 1024 "
 497                 "--p{4}_src_end_udp_port 1038 "
 498                 "--p{4}_dst_start_udp_port 1024 "
 499                 "--p{5}_src_start_udp_port 1024 "
 500                 "--p{5}_dst_start_udp_port 1024 "
 501                 "--p{5}_dst_end_udp_port 1173 "
 502                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 503                                                     duration, rate, framesize,
 504                                                     _p0, _p1, _async, _latency,
 505                                                     warmup_time),
 506                 timeout=int(duration)+60)
 507
 508         elif traffic_type in ["3-node-IPv4-SNAT-100u-15p"]:
 509             (ret, stdout, stderr) = ssh.exec_command(
 510                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 511                 "--duration={1} -r {2} -s {3} "
 512                 "--p{4}_src_start_ip 20.0.0.0 "
 513                 "--p{4}_src_end_ip 20.0.0.99 "
 514                 "--p{4}_dst_start_ip 12.0.0.2 "
 515                 "--p{5}_src_start_ip 12.0.0.2 "
 516                 "--p{5}_src_end_ip 12.0.0.2 "
 517                 "--p{5}_dst_start_ip 200.0.0.0 "
 518                 "--p{4}_src_start_udp_port 1024 "
 519                 "--p{4}_src_end_udp_port 1038 "
 520                 "--p{4}_dst_start_udp_port 1024 "
 521                 "--p{5}_src_start_udp_port 1024 "
 522                 "--p{5}_dst_start_udp_port 1024 "
 523                 "--p{5}_dst_end_udp_port 2523 "
 524                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 525                                                     duration, rate, framesize,
 526                                                     _p0, _p1, _async, _latency,
 527                                                     warmup_time),
 528                 timeout=int(duration) + 60)
 529
 530         elif traffic_type in ["3-node-IPv4-SNAT-1000u-15p"]:
 531             (ret, stdout, stderr) = ssh.exec_command(
 532                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 533                 "--duration={1} -r {2} -s {3} "
 534                 "--p{4}_src_start_ip 20.0.0.0 "
 535                 "--p{4}_src_end_ip 20.0.3.231 "
 536                 "--p{4}_dst_start_ip 12.0.0.2 "
 537                 "--p{5}_src_start_ip 12.0.0.2 "
 538                 "--p{5}_src_end_ip 12.0.0.2 "
 539                 "--p{5}_dst_start_ip 200.0.0.0 "
 540                 "--p{4}_src_start_udp_port 1024 "
 541                 "--p{4}_src_end_udp_port 1038 "
 542                 "--p{4}_dst_start_udp_port 1024 "
 543                 "--p{5}_src_start_udp_port 1024 "
 544                 "--p{5}_dst_start_udp_port 1024 "
 545                 "--p{5}_dst_end_udp_port 16023 "
 546                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 547                                                     duration, rate, framesize,
 548                                                     _p0, _p1, _async, _latency,
 549                                                     warmup_time),
 550                 timeout=int(duration)+60)
 551
 552         elif traffic_type in ["3-node-IPv4-SNAT-2000u-15p"]:
 553             (ret, stdout, stderr) = ssh.exec_command(
 554                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 555                 "--duration={1} -r {2} -s {3} "
 556                 "--p{4}_src_start_ip 20.0.0.0 "
 557                 "--p{4}_src_end_ip 20.0.7.207 "
 558                 "--p{4}_dst_start_ip 12.0.0.2 "
 559                 "--p{5}_src_start_ip 12.0.0.2 "
 560                 "--p{5}_src_end_ip 12.0.0.2 "
 561                 "--p{5}_dst_start_ip 200.0.0.0 "
 562                 "--p{4}_src_start_udp_port 1024 "
 563                 "--p{4}_src_end_udp_port 1038 "
 564                 "--p{4}_dst_start_udp_port 1024 "
 565                 "--p{5}_src_start_udp_port 1024 "
 566                 "--p{5}_dst_start_udp_port 1024 "
 567                 "--p{5}_dst_end_udp_port 31022 "
 568                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 569                                                     duration, rate, framesize,
 570                                                     _p0, _p1, _async, _latency,
 571                                                     warmup_time),
 572                 timeout=int(duration)+60)
 573
 574         elif traffic_type in ["3-node-IPv4-SNAT-4000u-15p"]:
 575             (ret, stdout, stderr) = ssh.exec_command(
 576                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 577                 "--duration={1} -r {2} -s {3} "
 578                 "--p{4}_src_start_ip 20.0.0.0 "
 579                 "--p{4}_src_end_ip 20.0.15.159 "
 580                 "--p{4}_dst_start_ip 12.0.0.2 "
 581                 "--p{5}_src_start_ip 12.0.0.2 "
 582                 "--p{5}_src_end_ip 12.0.0.2 "
 583                 "--p{5}_dst_start_ip 200.0.0.0 "
 584                 "--p{4}_src_start_udp_port 1024 "
 585                 "--p{4}_src_end_udp_port 1038 "
 586                 "--p{4}_dst_start_udp_port 1024 "
 587                 "--p{5}_src_start_udp_port 1024 "
 588                 "--p{5}_dst_start_udp_port 1024 "
 589                 "--p{5}_dst_end_udp_port 61022 "
 590                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 591                                                     duration, rate, framesize,
 592                                                     _p0, _p1, _async, _latency,
 593                                                     warmup_time),
 594                 timeout=int(duration)+60)
 595
 596         elif traffic_type in ["3-node-IPv4-dst-10000"]:
 597             (ret, stdout, stderr) = ssh.exec_command(
 598                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 599                 "--duration={1} -r {2} -s {3} "
 600                 "--p{4}_src_start_ip 10.0.0.1 "
 601                 "--p{4}_dst_start_ip 20.0.0.0 "
 602                 "--p{4}_dst_end_ip 20.0.39.15 "
 603                 "--p{5}_src_start_ip 20.0.0.1 "
 604                 "--p{5}_dst_start_ip 10.0.0.0 "
 605                 "--p{5}_dst_end_ip 10.0.39.15 "
 606                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 607                                                     duration, rate, framesize,
 608                                                     _p0, _p1, _async, _latency,
 609                                                     warmup_time),
 610                 timeout=int(duration)+60)
 611         elif traffic_type in ["3-node-IPv4-dst-100000"]:
 612             (ret, stdout, stderr) = ssh.exec_command(
 613                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 614                 "--duration={1} -r {2} -s {3} "
 615                 "--p{4}_src_start_ip 10.0.0.1 "
 616                 "--p{4}_dst_start_ip 20.0.0.0 "
 617                 "--p{4}_dst_end_ip 20.1.134.159 "
 618                 "--p{5}_src_start_ip 20.0.0.1 "
 619                 "--p{5}_dst_start_ip 10.0.0.0 "
 620                 "--p{5}_dst_end_ip 10.1.134.159 "
 621                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 622                                                     duration, rate, framesize,
 623                                                     _p0, _p1, _async, _latency,
 624                                                     warmup_time),
 625                 timeout=int(duration)+60)
 626         elif traffic_type in ["3-node-IPv4-dst-1000000"]:
 627             (ret, stdout, stderr) = ssh.exec_command(
 628                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 629                 "--duration={1} -r {2} -s {3} "
 630                 "--p{4}_src_start_ip 10.0.0.1 "
 631                 "--p{4}_dst_start_ip 20.0.0.0 "
 632                 "--p{4}_dst_end_ip 20.15.66.63 "
 633                 "--p{5}_src_start_ip 20.0.0.1 "
 634                 "--p{5}_dst_start_ip 10.0.0.0 "
 635                 "--p{5}_dst_end_ip 10.15.66.63 "
 636                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 637                                                     duration, rate, framesize,
 638                                                     _p0, _p1, _async, _latency,
 639                                                     warmup_time),
 640                 timeout=int(duration)+60)
 641         elif traffic_type in ["3-node-IPv6"]:
 642             (ret, stdout, stderr) = ssh.exec_command(
 643                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 644                 "--duration={1} -r {2} -s {3} -6 "
 645                 "--p{4}_src_start_ip 2001:1::2 "
 646                 "--p{4}_src_end_ip 2001:1::FE "
 647                 "--p{4}_dst_start_ip 2001:2::2 "
 648                 "--p{5}_src_start_ip 2001:2::2 "
 649                 "--p{5}_src_end_ip 2001:2::FE "
 650                 "--p{5}_dst_start_ip 2001:1::2 "
 651                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 652                                                     duration, rate, framesize,
 653                                                     _p0, _p1, _async, _latency,
 654                                                     warmup_time),
 655                 timeout=int(duration)+60)
 656         elif traffic_type in ["3-node-IPv6-dst-10000"]:
 657             (ret, stdout, stderr) = ssh.exec_command(
 658                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 659                 "--duration={1} -r {2} -s {3} -6 "
 660                 "--p{4}_src_start_ip 2001:1::1 "
 661                 "--p{4}_dst_start_ip 2001:2::0 "
 662                 "--p{4}_dst_end_ip 2001:2::270F "
 663                 "--p{5}_src_start_ip 2001:2::1 "
 664                 "--p{5}_dst_start_ip 2001:1::0 "
 665                 "--p{5}_dst_end_ip 2001:1::270F "
 666                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 667                                                     duration, rate, framesize,
 668                                                     _p0, _p1, _async, _latency,
 669                                                     warmup_time),
 670                 timeout=int(duration)+60)
 671         elif traffic_type in ["3-node-IPv6-dst-100000"]:
 672             (ret, stdout, stderr) = ssh.exec_command(
 673                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 674                 "--duration={1} -r {2} -s {3} -6 "
 675                 "--p{4}_src_start_ip 2001:1::1 "
 676                 "--p{4}_dst_start_ip 2001:2::0 "
 677                 "--p{4}_dst_end_ip 2001:2::1:869F "
 678                 "--p{5}_src_start_ip 2001:2::1 "
 679                 "--p{5}_dst_start_ip 2001:1::0 "
 680                 "--p{5}_dst_end_ip 2001:1::1:869F "
 681                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 682                                                     duration, rate, framesize,
 683                                                     _p0, _p1, _async, _latency,
 684                                                     warmup_time),
 685                 timeout=int(duration)+60)
 686         elif traffic_type in ["3-node-IPv6-dst-1000000"]:
 687             (ret, stdout, stderr) = ssh.exec_command(
 688                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 689                 "--duration={1} -r {2} -s {3} -6 "
 690                 "--p{4}_src_start_ip 2001:1::1 "
 691                 "--p{4}_dst_start_ip 2001:2::0 "
 692                 "--p{4}_dst_end_ip 2001:2::F:423F "
 693                 "--p{5}_src_start_ip 2001:2::1 "
 694                 "--p{5}_dst_start_ip 2001:1::0 "
 695                 "--p{5}_dst_end_ip 2001:1::F:423F "
 696                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 697                                                     duration, rate, framesize,
 698                                                     _p0, _p1, _async, _latency,
 699                                                     warmup_time),
 700                 timeout=int(duration)+60)
 701         elif traffic_type in ["2-node-bridge"]:
 702             (ret, stdout, stderr) = ssh.exec_command(
 703                 "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py "
 704                 "--duration={1} -r {2} -s {3} "
 705                 "--p{4}_src_start_ip 10.10.10.2 "
 706                 "--p{4}_src_end_ip 10.10.10.254 "
 707                 "--p{4}_dst_start_ip 20.20.20.2 "
 708                 "--p{5}_src_start_ip 20.20.20.2 "
 709                 "--p{5}_src_end_ip 20.20.20.254 "
 710                 "--p{5}_dst_start_ip 10.10.10.2 "
 711                 "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR,
 712                                                     duration, rate, framesize,
 713                                                     _p0, _p1, _async, _latency,
 714                                                     warmup_time),
 715                 timeout = int(duration) + 60)
 716         else:
 717             raise NotImplementedError('Unsupported traffic type')
 718
 719         logger.trace(ret)
 720         logger.trace(stdout)
 721         logger.trace(stderr)
 722
 723         if int(ret) != 0:
 724             raise RuntimeError('T-rex stateless runtime error')
 725         elif async_call:
 726             #no result
 727             self._received = None
 728             self._sent = None
 729             self._loss = None
 730             self._latency = None
 731         else:
 732             # last line from console output
 733             line = stdout.splitlines()[-1]
 734
 735             self._result = line
 736             logger.info('TrafficGen result: {0}'.format(self._result))
 737
 738             self._received = self._result.split(', ')[1].split('=')[1]
 739             self._sent = self._result.split(', ')[2].split('=')[1]
 740             self._loss = self._result.split(', ')[3].split('=')[1]
 741
 742             self._latency = []
 743             self._latency.append(self._result.split(', ')[4].split('=')[1])
 744             self._latency.append(self._result.split(', ')[5].split('=')[1])
 745
 746     def stop_traffic_on_tg(self):
 747         """Stop all traffic on TG.
 748
 749         :returns: Nothing
 750         :raises: RuntimeError if TG is not set.
 751         """
 752         if self._node is None:
 753             raise RuntimeError("TG is not set")
 754         if self._node['subtype'] == NodeSubTypeTG.TREX:
 755             self.trex_stl_stop_remote_exec(self._node)
 756
 757     def send_traffic_on_tg(self, duration, rate, framesize,
 758                            traffic_type, warmup_time=5, async_call=False,
 759                            latency=True):
 760         """Send traffic from all configured interfaces on TG.
 761
 762         :param duration: Duration of test traffic generation in seconds.
 763         :param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...).
 764         :param framesize: Frame size (L2) in Bytes.
 765         :param traffic_type: Traffic profile.
 766         :param warmup_time: Warmup phase in seconds.
 767         :param async_call: Async mode.
 768         :param latency: With latency measurement.
 769         :type duration: str
 770         :type rate: str
 771         :type framesize: str
 772         :type traffic_type: str
 773         :type warmup_time: int
 774         :type async_call: bool
 775         :type latency: bool
 776         :returns: TG output.
 777         :rtype: str
 778         :raises: RuntimeError if TG is not set.
 779         :raises: RuntimeError if node is not TG or subtype is not specified.
 780         :raises: NotImplementedError if TG is not supported.
 781         """
 782
 783         node = self._node
 784         if node is None:
 785             raise RuntimeError("TG is not set")
 786
 787         if node['type'] != NodeType.TG:
 788             raise RuntimeError('Node type is not a TG')
 789
 790         if node['subtype'] is None:
 791             raise RuntimeError('TG subtype not defined')
 792         elif node['subtype'] == NodeSubTypeTG.TREX:
 793             self.trex_stl_start_remote_exec(duration, rate, framesize,
 794                                             traffic_type, async_call, latency,
 795                                             warmup_time=warmup_time)
 796         else:
 797             raise NotImplementedError("TG subtype not supported")
 798
 799         return self._result
 800
 801     def no_traffic_loss_occurred(self):
 802         """Fail if loss occurred in traffic run.
 803
 804         :returns: nothing
 805         :raises: Exception if loss occured.
 806         """
 807         if self._loss is None:
 808             raise Exception('The traffic generation has not been issued')
 809         if self._loss != '0':
 810             raise Exception('Traffic loss occurred: {0}'.format(self._loss))
 811
 812     def partial_traffic_loss_accepted(self, loss_acceptance,
 813                                       loss_acceptance_type):
 814         """Fail if loss is higher then accepted in traffic run.
 815
 816         :param loss_acceptance: Permitted drop ratio or frames count.
 817         :param loss_acceptance_type: Type of permitted loss.
 818         :type loss_acceptance: float
 819         :type loss_acceptance_type: LossAcceptanceType
 820         :returns: nothing
 821         :raises: Exception if loss is above acceptance criteria.
 822         """
 823         if self._loss is None:
 824             raise Exception('The traffic generation has not been issued')
 825
 826         if loss_acceptance_type == 'percentage':
 827             loss = (float(self._loss) / float(self._sent)) * 100
 828         elif loss_acceptance_type == 'frames':
 829             loss = float(self._loss)
 830         else:
 831             raise Exception('Loss acceptance type not supported')
 832
 833         if loss > float(loss_acceptance):
 834             raise Exception("Traffic loss {} above loss acceptance: {}".format(
 835                 loss, loss_acceptance))