Add the DPDK l2fwd performance test cases.

Change-Id: I996847a4871ed994cd9b5edb459fb079ff39c86d
Signed-off-by: Fangyin Hu <fangyinx.hu@intel.com>

6 files changed, 517 insertions, 9 deletions

diff --git a/resources/libraries/python/DPDK/DPDKTools.py b/resources/libraries/python/DPDK/DPDKTools.py
new file mode 100644
index 0000000000..e7fa2f4e76
--- /dev/null
+++ b/resources/libraries/python/DPDK/DPDKTools.py
@@ -0,0 +1,83 @@
+# Copyright (c) 2016 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:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""
+This module exists to provide the init DPDK.
+"""
+
+from resources.libraries.python.ssh import SSH
+from resources.libraries.python.constants import Constants as con
+from resources.libraries.python.topology import Topology
+
+class DPDKTools(object):
+    """Test the DPDK l2fwd performance."""
+
+    @staticmethod
+    def initialize_dpdk_environment(dut_node, dut_if1, dut_if2):
+        """
+        Initialize the DPDK test environment on the dut_node.
+        Load the module uio and igb_uio, then bind the test NIC to the igb_uio.
+
+        :param dut_node: Will init the DPDK on this node.
+        :param dut_if1: DUT interface name.
+        :param dut_if2: DUT interface name.
+        :type dut_node: dict
+        :type dut_if1: str
+        :type dut_if2: str
+        :returns: none
+        """
+        pci_address1 = Topology.get_interface_pci_addr(dut_node, dut_if1)
+        pci_address2 = Topology.get_interface_pci_addr(dut_node, dut_if2)
+
+        ssh = SSH()
+        ssh.connect(dut_node)
+
+        cmd = 'cd {0}/dpdk-tests/dpdk_scripts/ && sudo ./init_dpdk.sh {1} {2}' \
+              .format(con.REMOTE_FW_DIR, pci_address1, pci_address2)
+
+        (ret_code, _, _) = ssh.exec_command(cmd, timeout=600)
+        if ret_code != 0:
+            raise Exception('Failed to bind the interfaces to igb_uio ' \
+                            'at node {0}'.format(dut_node['host']))
+
+    @staticmethod
+    def cleanup_dpdk_environment(dut_node, dut_if1, dut_if2):
+        """
+        Cleanup the DPDK test environment on the DUT node.
+        Unbind the NIC from the igb_uio and bind them to the kernel driver.
+
+        :param dut_node: Will cleanup the DPDK on this node.
+        :param dut_if1: DUT interface name.
+        :param dut_if2: DUT interface name.
+        :type dut_node: dict
+        :type dut_if1: str
+        :type dut_if2: str
+        :returns: none
+        """
+        pci_address1 = Topology.get_interface_pci_addr(dut_node, dut_if1)
+        if1_driver = Topology.get_interface_driver(dut_node, dut_if1)
+        pci_address2 = Topology.get_interface_pci_addr(dut_node, dut_if2)
+        if2_driver = Topology.get_interface_driver(dut_node, dut_if2)
+
+        ssh = SSH()
+        ssh.connect(dut_node)
+
+        cmd = 'cd {0}/dpdk-tests/dpdk_scripts/ && sudo ./cleanup_dpdk.sh ' \
+              '{1} {2} {3} {4}'.format(con.REMOTE_FW_DIR, if1_driver, \
+              pci_address1, if2_driver, pci_address2)
+
+        (ret_code, _, _) = ssh.exec_command(cmd, timeout=600)
+        if ret_code != 0:
+            raise Exception('Failed to cleanup the dpdk at node {0}'
+                            .format(dut_node['host']))
diff --git a/resources/libraries/python/DPDK/L2fwdTest.py b/resources/libraries/python/DPDK/L2fwdTest.py
new file mode 100644
index 0000000000..fa2f879492
--- /dev/null
+++ b/resources/libraries/python/DPDK/L2fwdTest.py
@@ -0,0 +1,54 @@
+# Copyright (c) 2016 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:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""
+This module exists to provide the l2fwd test for DPDK on topology nodes.
+"""
+
+from resources.libraries.python.ssh import SSH
+from resources.libraries.python.constants import Constants as con
+
+class L2fwdTest(object):
+    """Test the DPDK l2fwd performance."""
+
+    @staticmethod
+    def start_the_l2fwd_test(dut_node, cpu_coremask, nb_cores, queue_nums,
+                             jumbo_frames):
+        """
+        Execute the l2fwd on the dut_node.
+
+        :param dut_node: Will execute the l2fwd on this node.
+        :param cpu_coremask: The DPDK run core mask.
+        :param nb_cores: The cores number for the forwarding.
+        :param queue_nums: The queues number for the NIC.
+        :param jumbo_frames: Is jumbo frames or not.
+        :type dut_node: dict
+        :type cpu_coremask: str
+        :type nb_cores: str
+        :type queue_nums: str
+        :type jumbo_frames: str
+        :returns: none
+        """
+        ssh = SSH()
+        ssh.connect(dut_node)
+
+        cmd = 'cd {0}/dpdk-tests/dpdk_scripts/ && sudo ./run_l2fwd.sh ' \
+              '{1} {2} {3} {4}'.format(con.REMOTE_FW_DIR, cpu_coremask, \
+              nb_cores, queue_nums, jumbo_frames)
+
+        (ret_code, _, _) = ssh.exec_command(cmd, timeout=600)
+        if ret_code != 0:
+            raise Exception('Failed to execute l2fwd test at node {0}'
+                            .format(dut_node['host']))
+
diff --git a/resources/libraries/python/DPDK/SetupDPDKTest.py b/resources/libraries/python/DPDK/SetupDPDKTest.py
new file mode 100644
index 0000000000..06bb9ee9eb
--- /dev/null
+++ b/resources/libraries/python/DPDK/SetupDPDKTest.py
@@ -0,0 +1,218 @@
+# Copyright (c) 2016 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:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""This module exists to provide setup utilities for the framework on topology
+nodes. All tasks required to be run before the actual tests are started is
+supposed to end up here.
+"""
+
+from shlex import split
+from subprocess import Popen, PIPE, call
+from multiprocessing import Pool
+from tempfile import NamedTemporaryFile
+from os.path import basename
+
+from robot.api import logger
+from robot.libraries.BuiltIn import BuiltIn
+
+from resources.libraries.python.ssh import SSH
+from resources.libraries.python.constants import Constants as con
+from resources.libraries.python.topology import NodeType
+
+__all__ = ["SetupDPDKTest"]
+
+
+def pack_framework_dir():
+    """Pack the testing WS into temp file, return its name."""
+
+    tmpfile = NamedTemporaryFile(suffix=".tgz", prefix="DPDK-testing-")
+    file_name = tmpfile.name
+    tmpfile.close()
+
+    proc = Popen(
+        split("tar --exclude-vcs -zcf {0} .".format(file_name)),
+        stdout=PIPE, stderr=PIPE)
+    (stdout, stderr) = proc.communicate()
+
+    logger.debug(stdout)
+    logger.debug(stderr)
+
+    return_code = proc.wait()
+    if return_code != 0:
+        raise Exception("Could not pack testing framework.")
+
+    return file_name
+
+
+def copy_tarball_to_node(tarball, node):
+    """Copy tarball file from local host to remote node.
+
+    :param tarball: Path to tarball to upload.
+    :param node: Dictionary created from topology.
+    :type tarball: str
+    :type node: dict
+    :returns: nothing
+    """
+    logger.console('Copying tarball to {0}'.format(node['host']))
+    ssh = SSH()
+    ssh.connect(node)
+
+    ssh.scp(tarball, "/tmp/")
+
+
+def extract_tarball_at_node(tarball, node):
+    """Extract tarball at given node.
+
+    Extracts tarball using tar on given node to specific CSIT loocation.
+
+    :param tarball: Path to tarball to upload.
+    :param node: Dictionary created from topology.
+    :type tarball: str
+    :type node: dict
+    :returns: nothing
+    """
+    logger.console('Extracting tarball to {0} on {1}'.format(
+        con.REMOTE_FW_DIR, node['host']))
+    ssh = SSH()
+    ssh.connect(node)
+
+    cmd = 'sudo rm -rf {1}; mkdir {1} ; tar -zxf {0} -C {1}; ' \
+        'rm -f {0}'.format(tarball, con.REMOTE_FW_DIR)
+    (ret_code, _, stderr) = ssh.exec_command(cmd, timeout=30)
+    if ret_code != 0:
+        logger.error('Unpack error: {0}'.format(stderr))
+        raise Exception('Failed to unpack {0} at node {1}'.format(
+            tarball, node['host']))
+
+
+def create_env_directory_at_node(node):
+    """
+    Create fresh virtualenv to a directory, install pip requirements.
+
+    :param node: Dictionary created from topology, will only install in the TG
+    :type node: dict
+    :returns: nothing
+    """
+    logger.console('Extracting virtualenv, installing requirements.txt '
+                   'on {0}'.format(node['host']))
+    ssh = SSH()
+    ssh.connect(node)
+    (ret_code, stdout, stderr) = ssh.exec_command(
+        'cd {0} && rm -rf env && virtualenv env && '
+        '. env/bin/activate && pip install -r requirements.txt'
+        .format(con.REMOTE_FW_DIR), timeout=100)
+    if ret_code != 0:
+        logger.error('Virtualenv creation error: {0}'.format(stdout + stderr))
+        raise Exception('Virtualenv setup failed')
+    else:
+        logger.console('Virtualenv created on {0}'.format(node['host']))
+
+def install_dpdk_test(node):
+    """
+    Prepare the DPDK test envrionment
+
+    :param node: Dictionary created from topology
+    :type node: dict
+    :returns: nothing
+    """
+    logger.console('Install the DPDK on {0}'.format(node['host']))
+
+    ssh = SSH()
+    ssh.connect(node)
+
+    (ret_code, _, stderr) = ssh.exec_command(
+        'cd {0}/dpdk-tests/dpdk_scripts/ && ./install_dpdk.sh'
+        .format(con.REMOTE_FW_DIR), timeout=600)
+
+    if ret_code != 0:
+        logger.error('Install the DPDK error: {0}'.format(stderr))
+        raise Exception('Install the DPDK failed')
+    else:
+        logger.console('Install the DPDK on {0} success!'.format(node['host']))
+
+#pylint: disable=broad-except
+def setup_node(args):
+    """Run all set-up methods for a node.
+
+    This method is used as map_async parameter. It receives tuple with all
+    parameters as passed to map_async function.
+
+    :param args: All parameters needed to setup one node.
+    :type args: tuple
+    :returns: True - success, False - error
+    :rtype: bool
+    """
+    tarball, remote_tarball, node = args
+    try:
+        copy_tarball_to_node(tarball, node)
+        extract_tarball_at_node(remote_tarball, node)
+        if node['type'] == NodeType.DUT:
+            install_dpdk_test(node)
+        if node['type'] == NodeType.TG:
+            create_env_directory_at_node(node)
+    except Exception as exc:
+        logger.error("Node setup failed, error:'{0}'".format(exc.message))
+        return False
+    else:
+        logger.console('Setup of node {0} done'.format(node['host']))
+        return True
+
+def delete_local_tarball(tarball):
+    """Delete local tarball to prevent disk pollution.
+
+    :param tarball: Path to tarball to upload.
+    :type tarball: str
+    :returns: nothing
+    """
+    call(split('sh -c "rm {0} > /dev/null 2>&1"'.format(tarball)))
+
+
+class SetupDPDKTest(object):
+    """Setup suite run on topology nodes.
+
+    Many VAT/CLI based tests need the scripts at remote hosts before executing
+    them. This class packs the whole testing directory and copies it over
+    to all nodes in topology under /tmp/
+    """
+
+    @staticmethod
+    def setup_dpdk_test(nodes):
+        """Pack the whole directory and extract in temp on each node."""
+
+        tarball = pack_framework_dir()
+        msg = 'Framework packed to {0}'.format(tarball)
+        logger.console(msg)
+        logger.trace(msg)
+        remote_tarball = "/tmp/{0}".format(basename(tarball))
+
+        # Turn off logging since we use multiprocessing
+        log_level = BuiltIn().set_log_level('NONE')
+        params = ((tarball, remote_tarball, node) for node in nodes.values())
+        pool = Pool(processes=len(nodes))
+        result = pool.map_async(setup_node, params)
+        pool.close()
+        pool.join()
+
+        # Turn on logging
+        BuiltIn().set_log_level(log_level)
+
+        logger.info(
+            'Executed node setups in parallel, waiting for processes to end')
+        result.wait()
+
+        logger.info('Results: {0}'.format(result.get()))
+
+        logger.trace('Test framework copied to all topology nodes')
+        delete_local_tarball(tarball)
+        logger.console('All nodes are ready')
+
diff --git a/resources/libraries/python/DPDK/__init__.py b/resources/libraries/python/DPDK/__init__.py
new file mode 100644
index 0000000000..03bc4c1006
--- /dev/null
+++ b/resources/libraries/python/DPDK/__init__.py
@@ -0,0 +1,16 @@
+# Copyright (c) 2016 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:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+__init__ file for directory resources/libraries/python/DPDK
+"""
diff --git a/resources/libraries/robot/DPDK/default.robot b/resources/libraries/robot/DPDK/default.robot
new file mode 100644
index 0000000000..bf01aec429
--- /dev/null
+++ b/resources/libraries/robot/DPDK/default.robot
@@ -0,0 +1,58 @@
+# Copyright (c) 2016 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:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+*** Settings ***
+| Variables | resources/libraries/python/topology.py
+| Library | resources.libraries.python.topology.Topology
+| Library | resources.libraries.python.CpuUtils
+| Library | resources.libraries.python.DUTSetup
+| Library | resources.libraries.python.TGSetup
+| Library | resources.libraries.python.DPDK.L2fwdTest
+| Library | Collections
+
+*** Keywords ***
+| Start L2FWD '${m}' worker threads and rxqueues '${n}' with jumbo frames '${b}'
+| | [Documentation] |  Start the l2fwd with M worker threads without HTT
+| | ...             |  and rxqueues N and B(yes or no) jumbo frames in all DUTs
+| | ${nb-cores}= | Catenate | ${m}
+| | ${cpu}= | Run Keyword If | '${m}' == '1' | Catenate | 0x3
+| | ...     | ELSE IF        | '${m}' == '2' | Catenate | 0x403
+| | ...     | ELSE IF        | '${m}' == '4' | Catenate | 0xc07
+| | ...     | ELSE IF        | '${m}' == '6' | Catenate | 0x1c0f
+| | ...     | ELSE IF        | '${m}' == '8' | Catenate | 0x3c1f
+| | ...     | ELSE           | Fail | Not supported combination
+| | ${rxqueues}= | Catenate | ${n}
+| | ${jumbo_frames}= | Catenate | ${b}
+| | Start l2fwd to all DUTs | ${cpu} | ${nb-cores}
+| | ...     | ${rxqueues} | ${jumbo_frames}
+
+| Start l2fwd to all DUTs
+| | [Documentation] | Setup worker threads and rxqueues in l2fwd startup
+| | ...             | configuration to all DUTs
+| | ...
+| | ... | *Arguments:*
+| | ... | - ${cpu} - CPU configuration. Type: string
+| | ... | - ${nb-cores} - cores for the packet forwarding. Type: string
+| | ... | - ${rxqueues} - rxqueues configuration. Type: string
+| | ... | - ${jumbo_frames} - Enable the jumbo frames or not. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Start l2fwd to all DUTs \| 0x403 \| 2 \
+| | ... | \| 1 \| no
+| | [Arguments] | ${cpu} | ${nb-cores} | ${rxqueues} | ${jumbo_frames}
+| | ${duts}= | Get Matches | ${nodes} | DUT*
+| | :FOR | ${dut} | IN | @{duts}
+| | | Start the l2fwd test | ${nodes['${dut}']}
+| | | ...            | ${cpu} | ${nb-cores} | ${rxqueues} | ${jumbo_frames}
+
diff --git a/resources/libraries/robot/performance.robot b/resources/libraries/robot/performance.robot
index a42a889cd1..ebacc30e64 100644
--- a/resources/libraries/robot/performance.robot
+++ b/resources/libraries/robot/performance.robot
@@ -167,7 +167,7 @@
 | | Append Node | ${nodes['TG']}
 | | Append Node | ${nodes['DUT1']} | filter_list=${iface_model_list}
 | | Append Node | ${nodes['TG']}
-| | Compute Path
+| | Compute Path | always_same_link=${FALSE}
 | | ${tg_if1} | ${tg}= | Next Interface
 | | ${dut1_if1} | ${dut1}= | Next Interface
 | | ${dut1_if2} | ${dut1}= | Next Interface
@@ -1139,10 +1139,11 @@
 | | ... | \| Measure latency \| 10 \| 4.0 \| 64 \| 3-node-IPv4
 | | [Arguments] | ${duration} | ${rate} | ${framesize} | ${topology_type}
 | | Return From Keyword If | ${rate} <= 10000 | ${-1}
-| | Clear all counters on all DUTs
+| | ${ret}= | For DPDK Performance Test
+| | Run Keyword If | ${ret}==${FALSE} | Clear all counters on all DUTs
 | | Send traffic on tg | ${duration} | ${rate}pps | ${framesize}
 | | ...                | ${topology_type} | warmup_time=0
-| | Show statistics on all DUTs
+| | Run Keyword If | ${ret}==${FALSE} | Show statistics on all DUTs
 | | Run keyword and return | Get latency
 
 | Traffic should pass with no loss
@@ -1164,10 +1165,11 @@
 | | ...         | ${fail_on_loss}=${True}
 | | Clear and show runtime counters with running traffic | ${duration}
 | | ...  | ${rate} | ${framesize} | ${topology_type}
-| | Clear all counters on all DUTs
+| | ${ret}= | For DPDK Performance Test
+| | Run Keyword If | ${ret}==${FALSE} | Clear all counters on all DUTs
 | | Send traffic on tg | ${duration} | ${rate} | ${framesize}
 | | ...                | ${topology_type} | warmup_time=0
-| | Show statistics on all DUTs
+| | Run Keyword If | ${ret}==${FALSE} | Show statistics on all DUTs
 | | Run Keyword If | ${fail_on_loss} | No traffic loss occurred
 
 | Traffic should pass with partial loss
@@ -1192,10 +1194,11 @@
 | | ...         | ${fail_on_loss}=${True}
 | | Clear and show runtime counters with running traffic | ${duration}
 | | ...  | ${rate} | ${framesize} | ${topology_type}
-| | Clear all counters on all DUTs
+| | ${ret}= | For DPDK Performance Test
+| | Run Keyword If | ${ret}==${FALSE} | Clear all counters on all DUTs
 | | Send traffic on tg | ${duration} | ${rate} | ${framesize}
 | | ...                | ${topology_type} | warmup_time=0
-| | Show statistics on all DUTs
+| | Run Keyword If | ${ret}==${FALSE} | Show statistics on all DUTs
 | | Run Keyword If | ${fail_on_loss} | Partial traffic loss accepted
 | | ...            | ${loss_acceptance} | ${loss_acceptance_type}
 
@@ -1219,9 +1222,10 @@
 | | Send traffic on tg | -1 | ${rate} | ${framesize}
 | | ...                | ${topology_type} | warmup_time=0 | async_call=${True}
 | | ...                | latency=${False}
-| | Clear runtime counters on all DUTs
+| | ${ret}= | For DPDK Performance Test
+| | Run Keyword If | ${ret}==${FALSE} | Clear runtime counters on all DUTs
 | | Sleep | ${duration}
-| | Show runtime counters on all DUTs
+| | Run Keyword If | ${ret}==${FALSE} | Show runtime counters on all DUTs
 | | Stop traffic on tg
 
 | Add PCI devices to DUTs from 3-node single link topology
@@ -1571,3 +1575,78 @@
 | | dut1_v4.set_arp | ${dut1_if2} | ${dut2_dut1_ip4_address} | ${dut2_if1_mac}
 | | dut2_v4.set_arp | ${dut2_if1} | ${dut1_dut2_ip4_address} | ${dut1_if2_mac}
 
+DPDK 2-node Performance Suite Setup with DUT's NIC model
+| | [Documentation]
+| | ... | Updates interfaces on all nodes and setup global
+| | ... | variables used in test cases based on interface model provided as an
+| | ... | argument. Initializes traffic generator. Initializes DPDK test
+| | ... | environment.
+| | ...
+| | ... | *Arguments:*
+| | ... | - topology_type - Topology type. Type: string
+| | ... | - nic_model - Interface model. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| DPDK 2-node Performance Suite Setup with DUT's NIC model \
+| | ... | \| L2 \| Intel-X520-DA2 \|
+| | [Arguments] | ${topology_type} | ${nic_model}
+| | Setup performance global Variables
+| | 2-node circular Topology Variables Setup with DUT interface model
+| | ... | ${nic_model}
+| | Initialize traffic generator | ${tg} | ${tg_if1} | ${tg_if2}
+| | ...                          | ${dut1} | ${dut1_if1}
+| | ...                          | ${dut1} | ${dut1_if2}
+| | ...                          | ${topology_type}
+| | Initialize DPDK Environment | ${dut1} | ${dut1_if1} | ${dut1_if2}
+
+DPDK 3-node Performance Suite Setup with DUT's NIC model
+| | [Documentation]
+| | ... | Updates interfaces on all nodes and setup global
+| | ... | variables used in test cases based on interface model provided as an
+| | ... | argument. Initializes traffic generator. Initializes DPDK test
+| | ... | environment.
+| | ...
+| | ... | *Arguments:*
+| | ... | - topology_type - Topology type. Type: string
+| | ... | - nic_model - Interface model. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| 3-node Performance Suite Setup \| L2 \| Intel-X520-DA2 \|
+| | [Arguments] | ${topology_type} | ${nic_model}
+| | Setup performance global Variables
+| | 3-node circular Topology Variables Setup with DUT interface model
+| | ... | ${nic_model}
+| | Initialize traffic generator | ${tg} | ${tg_if1} | ${tg_if2}
+| | ...                          | ${dut1} | ${dut1_if1}
+| | ...                          | ${dut2} | ${dut2_if2}
+| | ...                          | ${topology_type}
+| | Initialize DPDK Environment | ${dut1} | ${dut1_if1} | ${dut1_if2}
+| | Initialize DPDK Environment | ${dut2} | ${dut2_if1} | ${dut2_if2}
+
+DPDK 3-node Performance Suite Teardown
+| | [Documentation]
+| | ... | Suite teardown phase with traffic generator teardown.
+| | ... | Cleanup DPDK test environment.
+| | ...
+| | Teardown traffic generator | ${tg}
+| | Cleanup DPDK Environment | ${dut1} | ${dut1_if1} | ${dut1_if2}
+| | Cleanup DPDK Environment | ${dut2} | ${dut2_if1} | ${dut2_if2}
+
+DPDK 2-node Performance Suite Teardown
+| | [Documentation]
+| | ... | Suite teardown phase with traffic generator teardown.
+| | ... | Cleanup DPDK test environment.
+| | ...
+| | Teardown traffic generator | ${tg}
+| | Cleanup DPDK Environment | ${dut1} | ${dut1_if1} | ${dut1_if2}
+
+For DPDK Performance Test
+| | [Documentation]
+| | ... | Return TRUE if variable DPDK_TEST exist, otherwise FALSE.
+| | ${ret} | ${tmp}=  | Run Keyword And Ignore Error
+| | ... | Variable Should Exist | ${DPDK_TEST}
+| | Return From Keyword If | "${ret}" == "PASS" | ${TRUE}
+| | Return From Keyword | ${FALSE}
+