Hoststack perf infrastructure refactoring

- DUT only topology (hoststack test
  apps are co-located with vpp)
- Make vpp app specific keywords generic
  where applicable
- Add IP4 Prefix to topology file
- Support running wrk in linux namespace
- Refactor namespace cleanup
- Remove redundant namespace creation code
- Refactor test/keyword dirs: tcp -> hoststack
- Add hoststack utility keywords
- Refactor wrk suite setup/teardown
- Update tests with recent perf infra changes

Change-Id: Ia1cf07978d579393eef94923819a87c8c1f36f34
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

16 files changed, 1057 insertions, 74 deletions

diff --git a/resources/libraries/python/Constants.py b/resources/libraries/python/Constants.py
index 0a8470ec65..dc9eda7505 100644
--- a/resources/libraries/python/Constants.py
+++ b/resources/libraries/python/Constants.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -224,6 +224,12 @@ class Constants:
         u"FAIL_ON_CRC_MISMATCH"
     )
 
+    # Default IP4 prefix length (if not defined in topology file)
+    DEFAULT_IP4_PREFIX_LENGTH = u"24"
+
+    # Maximum number of interfaces in a data path
+    DATAPATH_INTERFACES_MAX = 100
+
     # Mapping from NIC name to its bps limit.
     NIC_NAME_TO_BPS_LIMIT = {
         u"Cisco-VIC-1227": 10000000000,
diff --git a/resources/libraries/python/CoreDumpUtil.py b/resources/libraries/python/CoreDumpUtil.py
index 57f0c1d896..e1c7b65765 100644
--- a/resources/libraries/python/CoreDumpUtil.py
+++ b/resources/libraries/python/CoreDumpUtil.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -113,7 +113,7 @@ class CoreDumpUtil:
         :type node: dict
         """
         if node[u"type"] == NodeType.DUT and self.is_core_limit_enabled():
-            vpp_pid = DUTSetup.get_vpp_pid(node)
+            vpp_pid = DUTSetup.get_pid(node, u"vpp")
             self.enable_coredump_limit(node, vpp_pid)
 
     def enable_coredump_limit_vpp_on_all_duts(self, nodes):
diff --git a/resources/libraries/python/DUTSetup.py b/resources/libraries/python/DUTSetup.py
index d0da4645d2..431ccfb8ae 100644
--- a/resources/libraries/python/DUTSetup.py
+++ b/resources/libraries/python/DUTSetup.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -13,10 +13,11 @@
 
 """DUT setup library."""
 
+from time import sleep
 from robot.api import logger
 
 from resources.libraries.python.Constants import Constants
-from resources.libraries.python.ssh import SSH, exec_cmd_no_error
+from resources.libraries.python.ssh import SSH, exec_cmd, exec_cmd_no_error
 from resources.libraries.python.topology import NodeType, Topology
 
 
@@ -157,11 +158,62 @@ class DUTSetup:
                 DUTSetup.stop_service(node, service)
 
     @staticmethod
-    def get_vpp_pid(node):
-        """Get PID of running VPP process.
+    def kill_program(node, program, namespace=None):
+        """Kill program on the specified topology node.
+
+        :param node: Topology node.
+        :param program: Program name.
+        :param namespace: Namespace program is running in.
+        :type node: dict
+        :type program: str
+        :type namespace: str
+        """
+        host = node[u"host"]
+        cmd_timeout = 5
+        if namespace in (None, u"default"):
+            shell_cmd = u"sh -c"
+        else:
+            shell_cmd = f"ip netns exec {namespace} sh -c"
+
+        pgrep_cmd = f"{shell_cmd} \'pgrep {program}\'"
+        ret_code, _, _ = exec_cmd(node, pgrep_cmd, timeout=cmd_timeout,
+                                  sudo=True)
+        if ret_code == 0:
+            logger.trace(f"{program} is not running on {host}")
+            return
+        ret_code, _, _ = exec_cmd(node, f"{shell_cmd} \'pkill {program}\'",
+                                  timeout=cmd_timeout, sudo=True)
+        for attempt in range(5):
+            ret_code, _, _ = exec_cmd(node, pgrep_cmd, timeout=cmd_timeout,
+                                      sudo=True)
+            if ret_code != 0:
+                logger.trace(f"Attempt {attempt}: {program} is dead on {host}")
+                return
+            sleep(1)
+        logger.trace(f"SIGKILLing {program} on {host}")
+        ret_code, _, _ = exec_cmd(node, f"{shell_cmd} \'pkill -9 {program}\'",
+                                  timeout=cmd_timeout, sudo=True)
+
+    @staticmethod
+    def verify_program_installed(node, program):
+        """Verify that program is installed on the specified topology node.
+
+        :param node: Topology node.
+        :param program: Program name.
+        :type node: dict
+        :type program: str
+        """
+        cmd = f"command -v {program}"
+        exec_cmd_no_error(node, cmd, message=f"{program} is not installed")
+
+    @staticmethod
+    def get_pid(node, process):
+        """Get PID of running process.
 
         :param node: DUT node.
+        :param process: process name.
         :type node: dict
+        :type process: str
         :returns: PID
         :rtype: int
         :raises RuntimeError: If it is not possible to get the PID.
@@ -171,26 +223,24 @@ class DUTSetup:
 
         retval = None
         for i in range(3):
-            logger.trace(f"Try {i}: Get VPP PID")
-            ret_code, stdout, stderr = ssh.exec_command(u"pidof vpp")
+            logger.trace(f"Try {i}: Get {process} PID")
+            ret_code, stdout, stderr = ssh.exec_command(f"pidof {process}")
 
             if int(ret_code):
                 raise RuntimeError(
-                    f"Not possible to get PID of VPP process on node: "
+                    f"Not possible to get PID of {process} process on node: "
                     f"{node[u'host']}\n {stdout + stderr}"
                 )
 
             pid_list = stdout.split()
             if len(pid_list) == 1:
-                retval = int(stdout)
-            elif not pid_list:
-                logger.debug(f"No VPP PID found on node {node[u'host']}")
+                return [int(stdout)]
+            if not pid_list:
+                logger.debug(f"No {process} PID found on node {node[u'host']}")
                 continue
-            else:
-                logger.debug(
-                    f"More then one VPP PID found on node {node[u'host']}"
-                )
-                retval = [int(pid) for pid in pid_list]
+            logger.debug(f"More than one {process} PID found " \
+                         f"on node {node[u'host']}")
+            retval = [int(pid) for pid in pid_list]
 
         return retval
 
@@ -206,7 +256,7 @@ class DUTSetup:
         pids = dict()
         for node in nodes.values():
             if node[u"type"] == NodeType.DUT:
-                pids[node[u"host"]] = DUTSetup.get_vpp_pid(node)
+                pids[node[u"host"]] = DUTSetup.get_pid(node, u"vpp")
         return pids
 
     @staticmethod
diff --git a/resources/libraries/python/HoststackUtil.py b/resources/libraries/python/HoststackUtil.py
new file mode 100644
index 0000000000..9e6e20014c
--- /dev/null
+++ b/resources/libraries/python/HoststackUtil.py
@@ -0,0 +1,287 @@
+# Copyright (c) 2020 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.
+
+"""Host Stack util library."""
+from time import sleep
+from robot.api import logger
+
+from resources.libraries.python.ssh import exec_cmd, exec_cmd_no_error
+from resources.libraries.python.PapiExecutor import PapiSocketExecutor
+from resources.libraries.python.DUTSetup import DUTSetup
+
+class HoststackUtil():
+    """Utilities for Host Stack tests."""
+
+    @staticmethod
+    def get_vpp_echo_command(vpp_echo_attributes):
+        """Construct the vpp_echo command using the specified attributes.
+
+        :param vpp_echo_attributes: vpp_echo test program attributes.
+        :type vpp_echo_attributes: dict
+        :returns: Command line components of the vpp_echo command
+            'name' - program name
+            'args' - command arguments.
+        :rtype: dict
+        """
+        # TODO: Use a python class instead of dictionary for the return type
+        proto = vpp_echo_attributes[u"uri_protocol"]
+        addr = vpp_echo_attributes[u"uri_ip4_addr"]
+        port = vpp_echo_attributes[u"uri_port"]
+        vpp_echo_cmd = {}
+        vpp_echo_cmd[u"name"] = u"vpp_echo"
+        vpp_echo_cmd[u"args"] = f"{vpp_echo_attributes[u'role']} " \
+            f"socket-name {vpp_echo_attributes[u'vpp_api_socket']} " \
+            f"{vpp_echo_attributes[u'json_output']} " \
+            f"uri {proto}://{addr}/{port} " \
+            f"nclients {vpp_echo_attributes[u'nclients']} " \
+            f"quic-streams {vpp_echo_attributes[u'quic_streams']} " \
+            f"time {vpp_echo_attributes[u'time']} " \
+            f"fifo-size {vpp_echo_attributes[u'fifo_size']} " \
+            f"TX={vpp_echo_attributes[u'tx_bytes']} " \
+            f"RX={vpp_echo_attributes[u'rx_bytes']}"
+        if vpp_echo_attributes[u"rx_results_diff"]:
+            vpp_echo_cmd[u"args"] += u" rx-results-diff"
+        if vpp_echo_attributes[u"tx_results_diff"]:
+            vpp_echo_cmd[u"args"] += u" tx-results-diff"
+        return vpp_echo_cmd
+
+    @staticmethod
+    def set_hoststack_quic_fifo_size(node, fifo_size):
+        """Set the QUIC protocol fifo size.
+
+        :param node: Node to set the QUIC fifo size on.
+        :param fifo_size: fifo size, passed to the quic set fifo-size command.
+        :type node: dict
+        :type fifo_size: str
+        """
+        cmd = f"quic set fifo-size {fifo_size}"
+        PapiSocketExecutor.run_cli_cmd(node, cmd)
+
+    @staticmethod
+    def set_hoststack_quic_crypto_engine(node, quic_crypto_engine,
+                                         fail_on_error=False):
+        """Set the Hoststack QUIC crypto engine on node
+
+        :param node: Node to enable/disable HostStack.
+        :param quic_crypto_engine: type of crypto engine
+        :type node: dict
+        :type quic_crypto_engine: str
+        """
+        vpp_crypto_engines = {u"openssl", u"ia32", u"ipsecmb"}
+        if quic_crypto_engine == u"nocrypto":
+            logger.trace(u"No QUIC crypto engine.")
+            return
+
+        if quic_crypto_engine in vpp_crypto_engines:
+            cmds = [u"quic set crypto api vpp",
+                    f"set crypto handler aes-128-gcm {quic_crypto_engine}",
+                    f"set crypto handler aes-256-gcm {quic_crypto_engine}"]
+        elif quic_crypto_engine == u"picotls":
+            cmds = [u"quic set crypto api picotls"]
+        else:
+            raise ValueError(f"Unknown QUIC crypto_engine {quic_crypto_engine}")
+
+        for cmd in cmds:
+            try:
+                PapiSocketExecutor.run_cli_cmd(node, cmd)
+            except AssertionError:
+                if fail_on_error:
+                    raise
+
+    @staticmethod
+    def get_hoststack_test_program_logs(node, program):
+        """Get HostStack test program stdout log.
+
+        :param node: DUT node.
+        :param program: test program.
+        :type node: dict
+        :type program: dict
+        """
+        program_name = program[u"name"]
+        cmd = f"sh -c \'cat /tmp/{program_name}_stdout.log\'"
+        stdout_log, _ = exec_cmd_no_error(node, cmd, sudo=True, \
+            message=f"Get {program_name} stdout log failed!")
+
+        cmd = f"sh -c \'cat /tmp/{program_name}_stderr.log\'"
+        stderr_log, _ = exec_cmd_no_error(node, cmd, sudo=True, \
+            message=f"Get {program_name} stderr log failed!")
+        return stdout_log, stderr_log
+
+    @staticmethod
+    def start_hoststack_test_program(node, namespace, program):
+        """Start the specified HostStack test program.
+
+        :param node: DUT node.
+        :param namespace: Net Namespace to run program in.
+        :param program: Test program.
+        :type node: dict
+        :type namespace: str
+        :type program: dict
+        :returns: Process ID
+        :rtype: int
+        :raises RuntimeError: If node subtype is not a DUT or startup failed.
+        """
+        # TODO: Pin test program to core(s) on same numa node as VPP.
+        if node[u"type"] != u"DUT":
+            raise RuntimeError(u"Node type is not a DUT!")
+
+        program_name = program[u"name"]
+        DUTSetup.kill_program(node, program_name, namespace)
+
+        if namespace == u"default":
+            shell_cmd = u"sh -c"
+        else:
+            shell_cmd = f"ip netns exec {namespace} sh -c"
+
+        env_vars = f"{program[u'env_vars']} " if u"env_vars" in program else u""
+        args = program[u"args"]
+        cmd = f"nohup {shell_cmd} \'{env_vars}{program_name} {args} " \
+            f">/tmp/{program_name}_stdout.log " \
+            f"2>/tmp/{program_name}_stderr.log &\'"
+        try:
+            exec_cmd_no_error(node, cmd, sudo=True)
+            return DUTSetup.get_pid(node, program_name)[0]
+        except RuntimeError:
+            stdout_log, stderr_log = \
+                HoststackUtil.get_hoststack_test_program_logs(node,
+                                                              program)
+            raise RuntimeError(f"Start {program_name} failed!\nSTDERR:\n" \
+                               f"{stderr_log}\nSTDOUT:\n{stdout_log}")
+        return None
+
+    @staticmethod
+    def stop_hoststack_test_program(node, program, pid):
+        """Stop the specified Hoststack test program.
+
+        :param node: DUT node.
+        :param program: Test program.
+        :param pid: Process ID of test program.
+        :type node: dict
+        :type program: dict
+        :type pid: int
+        """
+        program_name = program[u"name"]
+        if program_name == u"nginx":
+            cmd = u"nginx -s quit"
+            errmsg = u"Quit nginx failed!"
+        else:
+            cmd = f'if [ -n "$(ps {pid} | grep {program_name})" ] ; ' \
+                f'then kill -s SIGTERM {pid}; fi'
+            errmsg = f"Kill {program_name} ({pid}) failed!"
+
+        exec_cmd_no_error(node, cmd, message=errmsg, sudo=True)
+
+    @staticmethod
+    def hoststack_test_program_finished(node, program_pid):
+        """Wait for the specified HostStack test program process to complete.
+
+        :param node: DUT node.
+        :param program_pid: test program pid.
+        :type node: dict
+        :type program_pid: str
+        :raises RuntimeError: If node subtype is not a DUT.
+        """
+        if node[u"type"] != u"DUT":
+            raise RuntimeError(u"Node type is not a DUT!")
+
+        cmd = f"sh -c 'strace -qqe trace=none -p {program_pid}'"
+        exec_cmd(node, cmd, sudo=True)
+        # Wait a bit for stdout/stderr to be flushed to log files
+        # TODO: see if sub-second sleep works e.g. sleep(0.1)
+        sleep(1)
+
+    @staticmethod
+    def analyze_hoststack_test_program_output(node, role, nsim_attr,
+                                              program):
+        """Gather HostStack test program output and check for errors.
+
+        :param node: DUT node.
+        :param role: Role (client|server) of test program.
+        :param nsim_attr: Network Simulation Attributes.
+        :param program: Test program.
+        :param program_args: List of test program args.
+        :type node: dict
+        :type role: str
+        :type nsim_attr: dict
+        :type program: dict
+        :returns: tuple of no results bool and test program results.
+        :rtype: bool, str
+        :raises RuntimeError: If node subtype is not a DUT.
+        """
+        if node[u"type"] != u"DUT":
+            raise RuntimeError(u"Node type is not a DUT!")
+
+        program_name = program[u"name"]
+        program_stdout, program_stderr = \
+            HoststackUtil.get_hoststack_test_program_logs(node, program)
+        if len(program_stdout) == 0 and len(program_stderr) == 0:
+            logger.trace(f"Retrying {program_name} log retrieval")
+            program_stdout, program_stderr = \
+               HoststackUtil.get_hoststack_test_program_logs(node, program)
+
+        no_results = False
+        env_vars = f"{program[u'env_vars']} " if u"env_vars" in program else u""
+        program_cmd = f"{env_vars}{program_name} {program[u'args']}"
+        test_results = f"Test Results of '{program_cmd}':\n"
+
+        if nsim_attr[u"output_feature_enable"] or \
+            nsim_attr[u"cross_connect_feature_enable"]:
+            if nsim_attr[u"output_feature_enable"]:
+                feature_name = u"output"
+            else:
+                feature_name = u"cross-connect"
+            test_results += \
+                f"NSIM({feature_name}): delay " \
+                f"{nsim_attr[u'delay_in_usec']} usecs, " \
+                f"avg-pkt-size {nsim_attr[u'average_packet_size']}, " \
+                f"bandwidth {nsim_attr[u'bandwidth_in_bits_per_second']} " \
+                f"bits/sec, pkt-drop-rate {nsim_attr[u'packets_per_drop']} " \
+                f"pkts/drop\n"
+
+        if u"error" in program_stderr.lower():
+            test_results += f"ERROR DETECTED:\n{program_stderr}"
+            raise RuntimeError(test_results)
+        if program_stdout:
+            bad_test_results = False
+            if program == u"vpp_echo" and u"JSON stats" not in program_stdout:
+                test_results += u"Invalid test data output!\n"
+                bad_test_results = True
+            test_results += program_stdout
+            if bad_test_results:
+                raise RuntimeError(test_results)
+        else:
+            no_results = True
+            test_results += f"\nNo {program} test data retrieved!\n"
+            cmd = u"ls -l /tmp/*.log"
+            ls_stdout, _ = exec_cmd_no_error(node, cmd, sudo=True)
+            test_results += f"{ls_stdout}\n"
+
+        # TODO: Incorporate show error stats into results analysis
+        host = node[u"host"]
+        test_results += \
+            f"\n{role} VPP 'show errors' on host {host}:\n" \
+            f"{PapiSocketExecutor.run_cli_cmd(node, u'show error')}\n"
+
+        return no_results, test_results
+
+    @staticmethod
+    def no_hoststack_test_program_results(server_no_results, client_no_results):
+        """Return True if no HostStack test program output was gathered.
+
+        :param server_no_results: server no results value.
+        :param client_no_results: client no results value.
+        :type server_no_results: bool
+        :type client_no_results: bool
+        :rtype: bool
+        """
+        return server_no_results and client_no_results
diff --git a/resources/libraries/python/IPUtil.py b/resources/libraries/python/IPUtil.py
index c3df1fe376..1e0d90f065 100644
--- a/resources/libraries/python/IPUtil.py
+++ b/resources/libraries/python/IPUtil.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -12,7 +12,6 @@
 # limitations under the License.
 
 """Common IP utilities library."""
-
 import re
 
 from enum import IntEnum
@@ -25,6 +24,7 @@ from resources.libraries.python.PapiExecutor import PapiSocketExecutor
 from resources.libraries.python.ssh import exec_cmd_no_error, exec_cmd
 from resources.libraries.python.topology import Topology
 from resources.libraries.python.VatExecutor import VatTerminal
+from resources.libraries.python.Namespaces import Namespaces
 
 
 # from vpp/src/vnet/vnet/mpls/mpls_types.h
@@ -243,31 +243,31 @@ class IPUtil:
             raise AssertionError(f"IP addresses are not equal: {ip1} != {ip2}")
 
     @staticmethod
-    def setup_network_namespace(
-            node, namespace_name, interface_name, ip_addr, prefix):
+    def setup_network_namespace(node, namespace_name, interface_name,
+                                ip_addr_list, prefix_length):
         """Setup namespace on given node and attach interface and IP to
         this namespace. Applicable also on TG node.
 
         :param node: VPP node.
         :param namespace_name: Namespace name.
         :param interface_name: Interface name.
-        :param ip_addr: IP address of namespace's interface.
-        :param prefix: IP address prefix length.
+        :param ip_addr_list: List of IP addresses of namespace's interface.
+        :param prefix_length: IP address prefix length.
         :type node: dict
         :type namespace_name: str
         :type interface_name: str
-        :type ip_addr: str
-        :type prefix: int
+        :type ip_addr_list: list
+        :type prefix_length: int
         """
-        cmd = f"ip netns add {namespace_name}"
-        exec_cmd_no_error(node, cmd, sudo=True)
+        Namespaces.create_namespace(node, namespace_name)
 
-        cmd = f"ip link set dev {interface_name} up netns {namespace_name}"
+        cmd = f"ip netns exec {namespace_name} ip link set {interface_name} up"
         exec_cmd_no_error(node, cmd, sudo=True)
 
-        cmd = f"ip netns exec {namespace_name} ip addr add {ip_addr}/{prefix}" \
-            f" dev {interface_name}"
-        exec_cmd_no_error(node, cmd, sudo=True)
+        for ip_addr in ip_addr_list:
+            cmd = f"ip netns exec {namespace_name} ip addr add " \
+                f"{ip_addr}/{prefix_length} dev {interface_name}"
+            exec_cmd_no_error(node, cmd, sudo=True)
 
     @staticmethod
     def linux_enable_forwarding(node, ip_ver=u"ipv4"):
@@ -351,6 +351,64 @@ class IPUtil:
         exec_cmd_no_error(node, cmd, timeout=5, sudo=True)
 
     @staticmethod
+    def delete_linux_interface_ip(
+            node, interface, ip_addr, prefix_length, namespace=None):
+        """Delete IP address from interface in linux.
+
+        :param node: VPP/TG node.
+        :param interface: Interface in namespace.
+        :param ip_addr: IP to be deleted from interface.
+        :param prefix_length: IP prefix length.
+        :param namespace: Execute command in namespace. Optional
+        :type node: dict
+        :type interface: str
+        :type ip_addr: str
+        :type prefix_length: int
+        :type namespace: str
+        :raises RuntimeError: IP could not be deleted.
+        """
+        # TODO: Refactor command execution in namespaces into central
+        # methods (e.g. Namespace.exec_cmd_in_namespace)
+        if namespace is not None:
+            cmd = f"ip netns exec {namespace} ip addr del " \
+                f"{ip_addr}/{prefix_length} dev {interface}"
+        else:
+            cmd = f"ip addr del {ip_addr}/{prefix_length} dev {interface}"
+
+        exec_cmd_no_error(node, cmd, timeout=5, sudo=True)
+
+    @staticmethod
+    def linux_interface_has_ip(
+            node, interface, ip_addr, prefix_length, namespace=None):
+        """Return True if interface in linux has IP address.
+
+        :param node: VPP/TG node.
+        :param interface: Interface in namespace.
+        :param ip_addr: IP to be queried on interface.
+        :param prefix_length: IP prefix length.
+        :param namespace: Execute command in namespace. Optional
+        :type node: dict
+        :type interface: str
+        :type ip_addr: str
+        :type prefix_length: int
+        :type namespace: str
+        :rtype boolean
+        :raises RuntimeError: Request fails.
+        """
+        ip_addr_with_prefix = f"{ip_addr}/{prefix_length}"
+        if namespace is not None:
+            cmd = f"ip netns exec {namespace} ip addr show dev {interface}"
+        else:
+            cmd = f"ip addr show dev {interface}"
+
+        cmd += u" | grep 'inet ' | awk -e '{print $2}'"
+        cmd += f" | grep '{ip_addr_with_prefix}'"
+        _, stdout, _ = exec_cmd(node, cmd, timeout=5, sudo=True)
+
+        has_ip = stdout.rstrip()
+        return bool(has_ip == ip_addr_with_prefix)
+
+    @staticmethod
     def add_linux_route(node, ip_addr, prefix, gateway, namespace=None):
         """Add linux route in namespace.
 
@@ -406,6 +464,24 @@ class IPUtil:
             papi_exec.add(cmd, **args).get_reply(err_msg)
 
     @staticmethod
+    def vpp_interface_set_ip_addresses(node, interface, ip_addr_list,
+                                       prefix_length=None):
+        """Set IP addresses to VPP interface.
+
+        :param node: VPP node.
+        :param interface: Interface name.
+        :param ip_addr_list: IP addresses.
+        :param prefix_length: Prefix length.
+        :type node: dict
+        :type interface: str
+        :type ip_addr_list: list
+        :type prefix_length: int
+        """
+        for ip_addr in ip_addr_list:
+            IPUtil.vpp_interface_set_ip_address(node, interface, ip_addr,
+                                                prefix_length)
+
+    @staticmethod
     def vpp_add_ip_neighbor(node, iface_key, ip_addr, mac_address):
         """Add IP neighbor on DUT node.
 
diff --git a/resources/libraries/python/Namespaces.py b/resources/libraries/python/Namespaces.py
index 2618f3d19b..2bdcbcb324 100644
--- a/resources/libraries/python/Namespaces.py
+++ b/resources/libraries/python/Namespaces.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -18,21 +18,52 @@ from resources.libraries.python.ssh import exec_cmd_no_error, exec_cmd
 
 class Namespaces:
     """Linux namespace utilities."""
-    def __init__(self):
-        self._namespaces = []
+    __namespaces = []
 
-    def create_namespace(self, node, namespace_name):
+    @staticmethod
+    def create_namespace(node, namespace, delete_before_create=True):
         """Create namespace and add the name to the list for later clean-up.
 
         :param node: Where to create namespace.
-        :param namespace_name: Name for namespace.
+        :param namespace: Name for namespace.
+        :param delete_before_create: Delete namespace prior to create
         :type node: dict
-        :type namespace_name: str
+        :type namespace: str
+        :type delete_before_create: bool
         """
-        cmd = f"ip netns add {namespace_name}"
+        if delete_before_create:
+            Namespaces.delete_namespace(node, namespace)
 
+        cmd = f"ip netns add {namespace}"
         exec_cmd_no_error(node, cmd, sudo=True)
-        self._namespaces.append(namespace_name)
+        Namespaces.__namespaces.append(namespace)
+
+    @staticmethod
+    def delete_namespace(node, namespace):
+        """Delete namespace from the node and list.
+
+        :param node: Where to delete namespace.
+        :param namespace: Name for namespace.
+        :param delete_before_create: Delete namespace prior to create
+        :type node: dict
+        :type namespace: str
+        :type delete_before_create: bool
+        """
+        cmd_timeout = 5
+        cmd = f"ip netns delete {namespace}"
+        (ret_code, _, delete_errmsg) = \
+            exec_cmd(node, cmd, timeout=cmd_timeout, sudo=True)
+        if ret_code != 0:
+            cmd = f"ip netns list {namespace}"
+            (stdout, _) = \
+                exec_cmd_no_error(node, cmd, timeout=cmd_timeout, sudo=True)
+            if stdout == namespace:
+                raise RuntimeError(f"Could not delete namespace "
+                                   f"({namespace}): {delete_errmsg}")
+        try:
+            Namespaces.__namespaces.remove(namespace)
+        except ValueError:
+            pass
 
     @staticmethod
     def attach_interface_to_namespace(node, namespace, interface):
@@ -61,6 +92,21 @@ class Namespaces:
             )
 
     @staticmethod
+    def add_default_route_to_namespace(node, namespace, default_route):
+        """Add IPv4 default route to interface in namespace.
+
+        :param node: Node where to execute command.
+        :param namespace: Namespace to execute command on.
+        :param default_route: Default route address.
+        :type node: dict
+        :type namespace: str
+        :type default_route: str
+        """
+        cmd = f"ip netns exec {namespace} ip route add default " \
+              f"via {default_route}"
+        exec_cmd_no_error(node, cmd, sudo=True)
+
+    @staticmethod
     def create_bridge_for_int_in_namespace(
             node, namespace, bridge_name, *interfaces):
         """Setup bridge domain and add interfaces to it.
@@ -85,16 +131,19 @@ class Namespaces:
         cmd = f"ip netns exec {namespace} ip link set dev {bridge_name} up"
         exec_cmd_no_error(node, cmd, sudo=True)
 
-    def clean_up_namespaces(self, node):
-        """Remove all old namespaces.
+    @staticmethod
+    def clean_up_namespaces(node, namespace=None):
+        """Delete all old namespaces.
 
         :param node: Node where to execute command.
+        :param namespace: Namespace to delete, if None delete all namespaces
         :type node: dict
+        :type namespace: str
         :raises RuntimeError: Namespaces could not be cleaned properly.
         """
-        for namespace in self._namespaces:
-            print(f"Cleaning namespace {namespace}")
-            cmd = f"ip netns delete {namespace}"
-            ret_code, _, _ = exec_cmd(node, cmd, timeout=5, sudo=True)
-            if ret_code != 0:
-                raise RuntimeError(u"Could not delete namespace")
+        if namespace is not None:
+            Namespaces.delete_namespace(node, namespace)
+            return
+
+        for namespace_name in Namespaces.__namespaces:
+            Namespaces.delete_namespace(node, namespace_name)
diff --git a/resources/libraries/python/VPPUtil.py b/resources/libraries/python/VPPUtil.py
index 865775f995..ca63fa6cea 100644
--- a/resources/libraries/python/VPPUtil.py
+++ b/resources/libraries/python/VPPUtil.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -113,8 +113,7 @@ class VPPUtil:
         :param node: Topology node.
         :type node: dict
         """
-        cmd = u"command -v vpp"
-        exec_cmd_no_error(node, cmd, message=u"VPP is not installed!")
+        DUTSetup.verify_program_installed(node, u"vpp")
 
     @staticmethod
     def adjust_privileges(node):
@@ -155,7 +154,7 @@ class VPPUtil:
         :type node: dict
         :raises RuntimeError: If VPP service fails to start.
         """
-        VPPUtil.verify_vpp_installed(node)
+        DUTSetup.verify_program_installed(node, 'vpp')
         try:
             # Verify responsiveness of vppctl.
             VPPUtil.verify_vpp_started(node)
diff --git a/resources/libraries/python/VatExecutor.py b/resources/libraries/python/VatExecutor.py
index 19b92a6a1a..1de32a2a21 100644
--- a/resources/libraries/python/VatExecutor.py
+++ b/resources/libraries/python/VatExecutor.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -62,7 +62,7 @@ def get_vpp_pid(node):
         running on the DUT node.
     :rtype: int or list
     """
-    pid = PidLib.DUTSetup.get_vpp_pid(node)
+    pid = PidLib.DUTSetup.get_pid(node, u"vpp")
     return pid
 
 
diff --git a/resources/libraries/python/VppConfigGenerator.py b/resources/libraries/python/VppConfigGenerator.py
index 02f7cf725d..cd225db896 100644
--- a/resources/libraries/python/VppConfigGenerator.py
+++ b/resources/libraries/python/VppConfigGenerator.py
@@ -202,7 +202,7 @@ class VppConfigGenerator:
 
     def add_socksvr(self, socket=Constants.SOCKSVR_PATH):
         """Add socksvr configuration."""
-        path = ['socksvr', u"socket-name"]
+        path = [u"socksvr", u"socket-name"]
         self.add_config_item(self._nodeconfig, socket, path)
 
     def add_api_segment_gid(self, value=u"vpp"):
@@ -504,6 +504,16 @@ class VppConfigGenerator:
         path = [u"tcp", u"preallocated-half-open-connections"]
         self.add_config_item(self._nodeconfig, value, path)
 
+    def add_session_enable(self):
+        """Add session enable."""
+        path = [u"session", u"enable"]
+        self.add_config_item(self._nodeconfig, u"", path)
+
+    def add_session_event_queues_memfd_segment(self):
+        """Add session event queue memfd segment."""
+        path = [u"session", u"evt_qs_memfd_seg"]
+        self.add_config_item(self._nodeconfig, u"", path)
+
     def add_session_event_queue_length(self, value):
         """Add session event queue length.
 
@@ -513,6 +523,15 @@ class VppConfigGenerator:
         path = [u"session", u"event-queue-length"]
         self.add_config_item(self._nodeconfig, value, path)
 
+    def add_session_event_queues_segment_size(self, value):
+        """Add session event queue length.
+
+        :param value: Session event queue segment size.
+        :type value: str
+        """
+        path = [u"session", u"evt_qs_seg_size"]
+        self.add_config_item(self._nodeconfig, value, path)
+
     def add_session_preallocated_sessions(self, value):
         """Add the number of pre-allocated sessions.
 
diff --git a/resources/libraries/python/topology.py b/resources/libraries/python/topology.py
index b2d106d3ed..7dec51619c 100644
--- a/resources/libraries/python/topology.py
+++ b/resources/libraries/python/topology.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -22,6 +22,8 @@ from yaml import safe_load
 from robot.api import logger
 from robot.libraries.BuiltIn import BuiltIn, RobotNotRunningError
 
+from resources.libraries.python.Constants import Constants
+
 __all__ = [
     u"DICT__nodes", u"Topology", u"NodeType", u"SocketType", u"NodeSubTypeTG"
 ]
@@ -705,6 +707,22 @@ class Topology:
             return None
 
     @staticmethod
+    def get_interface_ip4_prefix_length(node, iface_key):
+        """Get IP4 address prefix length for the interface.
+
+        :param node: Node to get prefix length on.
+        :param iface_key: Interface key from topology file.
+        :type node: dict
+        :type iface_key: str
+        :returns: Prefix length from topology file or the default
+            IP4 prefix length if not found.
+        :rtype: int
+        :raises: KeyError if iface_key is not found.
+        """
+        return node[u"interfaces"][iface_key].get(u"ip4_prefix_length", \
+            Constants.DEFAULT_IP4_PREFIX_LENGTH)
+
+    @staticmethod
     def get_adjacent_node_and_interface(nodes_info, node, iface_key):
         """Get node and interface adjacent to specified interface
         on local network.
diff --git a/resources/libraries/robot/hoststack/hoststack.robot b/resources/libraries/robot/hoststack/hoststack.robot
new file mode 100644
index 0000000000..d0fd9a2a95
--- /dev/null
+++ b/resources/libraries/robot/hoststack/hoststack.robot
@@ -0,0 +1,372 @@
+# Copyright (c) 2020 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 ***
+| Library | resources.libraries.python.InterfaceUtil
+| Library | resources.libraries.python.IPUtil
+| Library | resources.libraries.python.HoststackUtil
+| Library | resources.libraries.python.NsimUtil
+| Variables | resources/libraries/python/Constants.py
+| Resource | resources/libraries/robot/ip/ip4.robot
+| Resource | resources/libraries/robot/nsim/nsim.robot
+|
+| Documentation | L2 keywords to set up VPP to test hoststack.
+
+*** Variables ***
+| ${quic_crypto_engine}= | nocrypto
+| ${quic_fifo_size}= | 4M
+| &{vpp_hoststack_attr}=
+| ... | rxq=${None}
+| ... | phy_cores=${1}
+| ... | vpp_api_socket=${SOCKSVR_PATH}
+| ... | api_seg_global_size=2G
+| ... | api_seg_api_size=1G
+| ... | sess_evt_q_seg_size=4G
+| ... | sess_evt_q_length=4000000
+| ... | sess_prealloc_sess=4000000
+| ... | sess_v4_sess_tbl_buckets=2000000
+| ... | sess_v4_sess_tbl_mem=2G
+| ... | sess_v4_sess_halfopen_buckets=5000000
+| ... | sess_v4_sess_halfopen_mem=3G
+| ... | sess_lcl_endpt_tbl_buckets=5000000
+| ... | sess_lcl_endpt_tbl_mem=3G
+| &{vpp_echo_server_attr}=
+| ... | role=server
+| ... | cfg_vpp_feature=${None}
+| ... | namespace=default
+| ... | vpp_api_socket=${vpp_hoststack_attr}[vpp_api_socket]
+| ... | json_output=json
+| ... | uri_protocol=quic
+| ... | uri_ip4_addr=${EMPTY}
+| ... | uri_port=1234
+| ... | nclients=1
+| ... | quic_streams=1
+| ... | time=sconnect:lastbyte
+| ... | fifo_size=4M
+| ... | rx_bytes=0
+| ... | tx_bytes=0
+| ... | rx_results_diff=${False}
+| ... | tx_results_diff=${False}
+| &{vpp_echo_client_attr}=
+| ... | role=client
+| ... | cfg_vpp_feature=${None}
+| ... | namespace=default
+| ... | vpp_api_socket=${vpp_hoststack_attr}[vpp_api_socket]
+| ... | json_output=json
+| ... | uri_protocol=quic
+| ... | uri_ip4_addr=${EMPTY}
+| ... | uri_port=1234
+| ... | nclients=1
+| ... | quic_streams=1
+| ... | time=sconnect:lastbyte
+| ... | fifo_size=4M
+| ... | rx_bytes=0
+| ... | tx_bytes=0
+| ... | rx_results_diff=${False}
+| ... | tx_results_diff=${False}
+
+*** Keywords ***
+| Set VPP Hoststack Attributes
+| | [Documentation]
+| | ... | Set the VPP HostStack attributes in the vpp_hoststack_attr dictionary.
+| |
+| | ... | *Arguments:*
+| | ... | - ${rxq} - Type: int
+| | ... | - ${phy_cores} - Number of cores for workers Type: int
+| | ... | - ${vpp_api_socket} - Path to VPP api socket file Type: string
+| | ... | - ${api_seg_global_size} - Global API segment size Type: string
+| | ... | - ${api_seg_api_size} - API segment API fifo size Type: string
+| | ... | - ${sess_evt_q_seg_size} - Session event queue segment size
+| | ... | Type: string
+| | ... | - ${sess_evt_q_length} - Session event queue length Type: string
+| | ... | - ${sess_prealloc_sess} - Number of sessions to preallocate
+| | ... | Type: string
+| | ... | - ${sess_v4_sess_tbl_buckets} - Number of IPv4 session table buckets
+| | ... | Type: string
+| | ... | - ${sess_v4_sess_tbl_mem} - IPv4 session table memory size
+| | ... | Type: string
+| | ... | - ${sess_v4_sess_halfopen_buckets} - Number of IPv4 session
+| | ... | half open table buckets Type: string
+| | ... | - ${sess_v4_sess_halfopen_mem} - IPv4 session half open
+| | ... | table memory size Type: string
+| | ... | - ${sess_lcl_endpt_tbl_buckets} - Number of session local endpoint
+| | ... | table buckets Type: string
+| | ... | - ${sess_lcl_endpt_tbl_mem} - Session local endpoint
+| | ... | table memory size Type: string
+| |
+| | ... | *Example:*
+| |
+| | ... | \| Set VPP Hoststack Attributes \| phy_cores=${phy_cores} \|
+| |
+| | [Arguments]
+| | ... | ${rxq}=${vpp_hoststack_attr}[rxq]
+| | ... | ${phy_cores}=${vpp_hoststack_attr}[phy_cores]
+| | ... | ${vpp_api_socket}=${vpp_hoststack_attr}[vpp_api_socket]
+| | ... | ${api_seg_global_size}=${vpp_hoststack_attr}[api_seg_global_size]
+| | ... | ${api_seg_api_size}=${vpp_hoststack_attr}[api_seg_api_size]
+| | ... | ${sess_evt_q_seg_size}=${vpp_hoststack_attr}[sess_evt_q_seg_size]
+| | ... | ${sess_evt_q_length}=${vpp_hoststack_attr}[sess_evt_q_length]
+| | ... | ${sess_prealloc_sess}=${vpp_hoststack_attr}[sess_prealloc_sess]
+| | ... | ${sess_v4_sess_tbl_buckets}=${vpp_hoststack_attr}[sess_v4_sess_tbl_buckets]
+| | ... | ${sess_v4_sess_tbl_mem}=${vpp_hoststack_attr}[sess_v4_sess_tbl_mem]
+| | ... | ${sess_v4_sess_halfopen_buckets}=${vpp_hoststack_attr}[sess_v4_sess_halfopen_buckets]
+| | ... | ${sess_v4_sess_halfopen_mem}=${vpp_hoststack_attr}[sess_v4_sess_halfopen_mem]
+| | ... | ${sess_lcl_endpt_tbl_buckets}=${vpp_hoststack_attr}[sess_lcl_endpt_tbl_buckets]
+| | ... | ${sess_lcl_endpt_tbl_mem}=${vpp_hoststack_attr}[sess_lcl_endpt_tbl_mem]
+| |
+| | Set To Dictionary | ${vpp_hoststack_attr} | rxq | ${rxq}
+| | Set To Dictionary | ${vpp_hoststack_attr} | phy_cores | ${phy_cores}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | vpp_api_socket | ${vpp_api_socket}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | api_seg_global_size | ${api_seg_global_size}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | api_seg_api_size | ${api_seg_api_size}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_evt_q_seg_size | ${sess_evt_q_seg_size}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_evt_q_length | ${sess_evt_q_length}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_prealloc_sess | ${sess_prealloc_sess}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_v4_sess_tbl_buckets | ${sess_v4_sess_tbl_buckets}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_v4_sess_tbl_mem | ${sess_v4_sess_tbl_mem}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_v4_sess_halfopen_buckets | ${sess_v4_sess_halfopen_buckets}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_v4_sess_halfopen_mem | ${sess_v4_sess_halfopen_mem}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_lcl_endpt_tbl_buckets | ${sess_lcl_endpt_tbl_buckets}
+| | Set To Dictionary | ${vpp_hoststack_attr}
+| | ... | sess_lcl_endpt_tbl_mem | ${sess_lcl_endpt_tbl_mem}
+
+| Set VPP Echo Server Attributes
+| | [Documentation]
+| | ... | Set the HostStack vpp_echo test program attributes
+| | ... | in the vpp_echo_server_attr dictionary.
+| |
+| | ... | *Arguments:*
+| | ... | - ${cfg_vpp_feature} - VPP Feature requiring config Type: string
+| | ... | - ${namespace} - Namespace Type: string
+| | ... | - ${nclients} - Number of clients Type: string
+| | ... | - ${quic_streams} - Number of quic streams Type: string
+| | ... | - ${fifo_size} - Session Fifo Size Type: integer
+| | ... | - ${time} - Timing events (start:end) Type: string
+| | ... | - ${rx_bytes} - Number of Bytes to receive Type: string
+| | ... | - ${tx_bytes} - Number of Bytes to send Type: string
+| | ... | - ${rx_results_diff} - Rx Results are different to pass Type: boolean
+| | ... | - ${tx_results_diff} - Tx Results are different to pass Type: boolean
+| |
+| | ... | *Example:*
+| |
+| | ... | \| Set VPP Echo Server Attributes \| nclients=${nclients} \|
+| | ... | \| tx_bytes=${tx_bytes} \|
+| |
+| | [Arguments]
+| | ... | ${cfg_vpp_feature}=${vpp_echo_server_attr}[cfg_vpp_feature]
+| | ... | ${namespace}=${vpp_echo_server_attr}[namespace]
+| | ... | ${nclients}=${vpp_echo_server_attr}[nclients]
+| | ... | ${quic_streams}=${vpp_echo_server_attr}[quic_streams]
+| | ... | ${time}=${vpp_echo_server_attr}[time]
+| | ... | ${fifo_size}=${vpp_echo_server_attr}[fifo_size]
+| | ... | ${rx_bytes}=${vpp_echo_server_attr}[rx_bytes]
+| | ... | ${tx_bytes}=${vpp_echo_server_attr}[tx_bytes]
+| | ... | ${rx_results_diff}=${vpp_echo_server_attr}[rx_results_diff]
+| | ... | ${tx_results_diff}=${vpp_echo_server_attr}[tx_results_diff]
+| |
+| | Set To Dictionary | ${vpp_echo_server_attr} | cfg_vpp_feature
+| | ... | ${cfg_vpp_feature}
+| | Set To Dictionary | ${vpp_echo_server_attr} | namespace | ${namespace}
+| | Set To Dictionary | ${vpp_echo_server_attr} | nclients | ${nclients}
+| | Set To Dictionary | ${vpp_echo_server_attr} | quic_streams | ${quic_streams}
+| | Set To Dictionary | ${vpp_echo_server_attr} | time | ${time}
+| | Set To Dictionary | ${vpp_echo_server_attr} | fifo_size | ${fifo_size}
+| | Set To Dictionary | ${vpp_echo_server_attr} | rx_bytes | ${rx_bytes}
+| | Set To Dictionary | ${vpp_echo_server_attr} | tx_bytes | ${tx_bytes}
+| | Set To Dictionary
+| | ... | ${vpp_echo_server_attr} | rx_results_diff | ${rx_results_diff}
+| | Set To Dictionary
+| | ... | ${vpp_echo_server_attr} | tx_results_diff | ${tx_results_diff}
+
+| Set VPP Echo Client Attributes
+| | [Documentation]
+| | ... | Set the HostStack vpp_echo test program attributes
+| | ... | in the vpp_echo_client_attr dictionary.
+| |
+| | ... | *Arguments:*
+| | ... | - ${cfg_vpp_feature} - VPP Feature requiring config Type: string
+| | ... | - ${namespace} - Namespace Type: string
+| | ... | - ${nclients} - Number of clients Type: string
+| | ... | - ${fifo_size} - Session Fifo Size Type: integer
+| | ... | - ${time} - Timing events (start:end) Type: string
+| | ... | - ${rx_bytes} - Number of Bytes to receive Type: string
+| | ... | - ${tx_bytes} - Number of Bytes to send Type: string
+| | ... | - ${rx_results_diff} - Rx Results are different to pass Type: boolean
+| | ... | - ${tx_results_diff} - Tx Results are different to pass Type: boolean
+| |
+| | ... | *Example:*
+| |
+| | ... | \| Set VPP Echo Client Attributes \| nclients=${nclients} \|
+| | ... | \| tx_bytes=${tx_bytes} \|
+| |
+| | [Arguments]
+| | ... | ${cfg_vpp_feature}=${vpp_echo_client_attr}[cfg_vpp_feature]
+| | ... | ${namespace}=${vpp_echo_client_attr}[namespace]
+| | ... | ${nclients}=${vpp_echo_client_attr}[nclients]
+| | ... | ${quic_streams}=${vpp_echo_server_attr}[quic_streams]
+| | ... | ${time}=${vpp_echo_client_attr}[time]
+| | ... | ${fifo_size}=${vpp_echo_client_attr}[fifo_size]
+| | ... | ${rx_bytes}=${vpp_echo_client_attr}[rx_bytes]
+| | ... | ${tx_bytes}=${vpp_echo_client_attr}[tx_bytes]
+| | ... | ${rx_results_diff}=${vpp_echo_client_attr}[rx_results_diff]
+| | ... | ${tx_results_diff}=${vpp_echo_client_attr}[tx_results_diff]
+| |
+| | Set To Dictionary | ${vpp_echo_client_attr} | cfg_vpp_feature
+| | ... | ${cfg_vpp_feature}
+| | Set To Dictionary | ${vpp_echo_client_attr} | namespace | ${namespace}
+| | Set To Dictionary | ${vpp_echo_client_attr} | nclients | ${nclients}
+| | Set To Dictionary | ${vpp_echo_client_attr} | quic_streams | ${quic_streams}
+| | Set To Dictionary | ${vpp_echo_client_attr} | time | ${time}
+| | Set To Dictionary | ${vpp_echo_client_attr} | fifo_size | ${fifo_size}
+| | Set To Dictionary | ${vpp_echo_client_attr} | rx_bytes | ${rx_bytes}
+| | Set To Dictionary | ${vpp_echo_client_attr} | tx_bytes | ${tx_bytes}
+| | Set To Dictionary
+| | ... | ${vpp_echo_client_attr} | rx_results_diff | ${rx_results_diff}
+| | Set To Dictionary
+| | ... | ${vpp_echo_client_attr} | tx_results_diff | ${tx_results_diff}
+
+| Run hoststack test program on DUT
+| | [Documentation]
+| | ... | Configure IP address on the port, set it up and start the specified
+| | ... | HostStack test program on the specified DUT.
+| |
+| | ... | *Arguments:*
+| | ... | - ${node} - VPP DUT node Type: Node
+| | ... | - ${intf} - VPP DUT node interface key Type: string
+| | ... | - ${ip4_addr} - VPP DUT node interface ip4 address Type: string
+| | ... | - ${ip4_mask} - VPP DUT node interface ip4 network mask Type: string
+| | ... | - ${namespace} - Network namespace to run test program in Type: string
+| | ... | - ${cfg_vpp_feature} - VPP hoststack feature requiring
+| | ... | additional VPP configuration Type: string
+| | ... | - ${test_program} - Host Stack test program Type: dict
+| |
+| | ... | *Example:*
+| |
+| | ... | \| Run hoststack test program on DUT \| ${dut1} \| ${dut1_if1} \|
+| | ... | \| ${dut1_if1_ip4_addr} \| ${dut1_if1_ip4_mask} \| default \|
+| | ... | \| quic \| ${vpp_echo_server} \|
+| |
+| | [Arguments] | ${node} | ${intf} | ${ip4_addr} | ${ip4_mask}
+| | | ... | ${namespace} | ${cfg_vpp_feature} | ${test_program}
+| |
+| | Run Keyword If | ${vpp_nsim_attr}[output_feature_enable]
+| | ... | Configure VPP NSIM | ${node} | ${vpp_nsim_attr} | ${intf}
+| | Run Keyword If | '${cfg_vpp_feature}' != ''
+| | ... | Additional VPP Config for Feature ${cfg_vpp_feature} | ${node}
+| | VPP Get Interface Data | ${node}
+| | Set Interface State | ${node} | ${intf} | up
+| | VPP Interface Set IP Address | ${node} | ${intf} | ${ip4_addr}
+| | ... | ${ip4_mask}
+| | Vpp Node Interfaces Ready Wait | ${node}
+| | ${hoststack_test_program_pid}= | Start Hoststack Test Program
+| | ... | ${node} | ${namespace} | ${test_program}
+| | Return From Keyword | ${hoststack_test_program_pid}
+
+| Additional VPP Config For Feature quic
+| | [Documentation]
+| | ... | Configure VPP quic attributes on the specified DUT.
+| |
+| | ... | *Arguments:*
+| | ... | - ${node} - VPP DUT node Type: Node
+| |
+| | [Arguments] | ${node}
+| |
+| | Set hoststack quic fifo size | ${node} | ${quic_fifo_size}
+| | Set hoststack quic crypto engine | ${node} | ${quic_crypto_engine}
+
+| Configure VPP hoststack attributes on all DUTs
+| | [Documentation]
+| | ... | Configure VPP HostStack attributes on all DUTs.
+| |
+| | Add worker threads to all DUTs
+| | ... | ${vpp_hoststack_attr}[phy_cores] | ${vpp_hoststack_attr}[rxq]
+| | Add DPDK PCI devices to all DUTs
+| | ${duts}= | Get Matches | ${nodes} | DUT*
+| | FOR | ${dut} | IN | @{duts}
+| | | Import Library | resources.libraries.python.VppConfigGenerator
+| | | ... | WITH NAME | ${dut}
+| | | Run keyword | ${dut}.Add socksvr | ${vpp_hoststack_attr}[vpp_api_socket]
+| | | Run keyword | ${dut}.Add api segment global size
+| | | ... | ${vpp_hoststack_attr}[api_seg_global_size]
+| | | Run keyword | ${dut}.Add api segment api size
+| | | ... | ${vpp_hoststack_attr}[api_seg_api_size]
+| | | Run keyword | ${dut}.Add api segment gid | testuser
+| | | Run keyword | ${dut}.Add session enable
+| | | Run keyword | ${dut}.Add session event queues memfd segment
+| | | Run keyword | ${dut}.Add session event queues segment size
+| | | ... | ${vpp_hoststack_attr}[sess_evt_q_seg_size]
+| | | Run keyword | ${dut}.Add session event queue length
+| | | ... | ${vpp_hoststack_attr}[sess_evt_q_length]
+| | | Run keyword | ${dut}.Add session preallocated sessions
+| | | ... | ${vpp_hoststack_attr}[sess_prealloc_sess]
+| | | Run keyword | ${dut}.Add session v4 session table buckets
+| | | ... | ${vpp_hoststack_attr}[sess_v4_sess_tbl_buckets]
+| | | Run keyword | ${dut}.Add session v4 session table memory
+| | | ... | ${vpp_hoststack_attr}[sess_v4_sess_tbl_mem]
+| | | Run keyword | ${dut}.Add session v4 halfopen table buckets
+| | | ... | ${vpp_hoststack_attr}[sess_v4_sess_halfopen_buckets]
+| | | Run keyword | ${dut}.Add session v4 halfopen table memory
+| | | ... | ${vpp_hoststack_attr}[sess_v4_sess_halfopen_mem]
+| | | Run keyword | ${dut}.Add session local endpoints table buckets
+| | | ... | ${vpp_hoststack_attr}[sess_lcl_endpt_tbl_buckets]
+| | | Run keyword | ${dut}.Add session local endpoints table memory
+| | | ... | ${vpp_hoststack_attr}[sess_lcl_endpt_tbl_mem]
+| | END
+| | Apply startup configuration on all VPP DUTs
+
+| Get Test Results From Hoststack VPP Echo Test
+| | [Documentation]
+| | ... | Configure IP address on the port, set it up and start the specified
+| | ... | HostStack test programs on the DUTs. Gather test program
+| | ... | output and append test results in message.
+| | ... | Return boolean indicating when no results were available from
+| | ... | both the server and client test programs.
+| |
+| | Set To Dictionary | ${vpp_echo_server_attr} | uri_ip4_addr
+| | ... | ${dut2_if1_ip4_addr}
+| | Set To Dictionary | ${vpp_echo_client_attr} | uri_ip4_addr
+| | ... | ${dut2_if1_ip4_addr}
+| | Configure VPP Hoststack Attributes on all DUTs
+| | ${vpp_echo_server}= | Get VPP Echo Command | ${vpp_echo_server_attr}
+| | ${server_pid}= | Run hoststack test program on DUT
+| | ... | ${dut2} | ${dut2_if1} | ${dut2_if1_ip4_addr} | ${dut2_if1_ip4_prefix}
+| | ... | ${vpp_echo_server_attr}[namespace]
+| | ... | ${vpp_echo_server_attr}[cfg_vpp_feature] | ${vpp_echo_server}
+| | ${vpp_echo_client}= | Get VPP Echo Command | ${vpp_echo_client_attr}
+| | ${client_pid}= | Run hoststack test program on DUT
+| | ... | ${dut1} | ${dut1_if1} | ${dut1_if1_ip4_addr} | ${dut1_if1_ip4_prefix}
+| | ... | ${vpp_echo_client_attr}[namespace]
+| | ... | ${vpp_echo_client_attr}[cfg_vpp_feature] | ${vpp_echo_client}
+| | When Hoststack Test Program Finished | ${dut1} | ${client_pid}
+| | ${client_no_results} | ${client_output}=
+| | ... | Analyze hoststack test program output | ${dut1} | Client
+| | ... | ${vpp_nsim_attr} | ${vpp_echo_client}
+| | Then Set test message | ${client_output}
+| | And Hoststack Test Program Finished | ${dut2} | ${server_pid}
+| | ${server_no_results} | ${server_output}=
+| | ... | Analyze hoststack test program output | ${dut2} | Server
+| | ... | ${vpp_nsim_attr} | ${vpp_echo_server}
+| | Set test message | ${server_output} | append=True
+| | Run Keyword And Return | No Hoststack Test Program Results
+| | ... | ${server_no_results} | ${client_no_results}
diff --git a/resources/libraries/robot/tcp/tcp_setup.robot b/resources/libraries/robot/hoststack/tcp_setup.robot
index 718070979f..718070979f 100644
--- a/resources/libraries/robot/tcp/tcp_setup.robot
+++ b/resources/libraries/robot/hoststack/tcp_setup.robot
diff --git a/resources/libraries/robot/shared/default.robot b/resources/libraries/robot/shared/default.robot
index 3b8f2804c1..160ebc887b 100644
--- a/resources/libraries/robot/shared/default.robot
+++ b/resources/libraries/robot/shared/default.robot
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -113,6 +113,31 @@
 | | Verify Kernel Module on All DUTs | ${nodes} | ${module}
 | | ... | force_load=${force_load}
 
+| Get Keyname for DUT
+| | [Documentation]
+| | ... | Get the Keyname for the DUT in the keyname list.
+| | ... | Returns lowercase keyname value.
+| |
+| | ... | *Arguments:*
+| | ... | - dutx - DUT to find keyname. Type: dict
+| | ... | - dut_keys - DUT Keynames to search. Type: list
+| |
+| | ... | *Example:*
+| |
+| | ... | \| Get Keyname for DUT \| ${dutx} \| ${duts} \|
+| |
+| | [Arguments] | ${dutx} | ${dut_keys}
+| |
+| | FOR | ${key} | IN | @{dut_keys}
+| | | ${found_key} | ${value}= | Run Keyword and Ignore Error
+| | | ... | Dictionaries Should Be Equal | ${nodes['${key}']} | ${dutx}
+| | | Run Keyword If | '${found_key}' == 'PASS' | EXIT FOR LOOP
+| | END
+| | Run Keyword If | '${found_key}' != 'PASS'
+| | ... | Fail | Keyname for ${dutx} not found
+| | ${keyname}= | Convert To Lowercase | ${key}
+| | Return From Keyword | ${keyname}
+
 | Create base startup configuration of VPP on all DUTs
 | | [Documentation] | Create base startup configuration of VPP to all DUTs.
 | |
diff --git a/resources/libraries/robot/shared/suite_setup.robot b/resources/libraries/robot/shared/suite_setup.robot
index 513cfe8045..0a78226962 100644
--- a/resources/libraries/robot/shared/suite_setup.robot
+++ b/resources/libraries/robot/shared/suite_setup.robot
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -20,6 +20,8 @@
 | Library | resources.libraries.python.topology.Topology
 | Library | resources.libraries.python.TrafficGenerator
 | Library | resources.tools.wrk.wrk
+| Variables | resources/libraries/python/Constants.py
+| Resource | resources/libraries/robot/wrk/wrk_utils.robot
 |
 | Documentation | Suite setup keywords.
 
@@ -87,6 +89,64 @@
 | | | Run Keyword | Additional Suite setup Action For ${action}
 | | END
 
+| Setup suite single link no tg
+| | [Documentation]
+| | ... | Common suite setup for single link tests.
+| | ... |
+| | ... | Compute path for testing on two given nodes in circular topology
+| | ... | based on interface model provided as an argument and set
+| | ... | corresponding suite variables.
+| |
+| | ... | _NOTE:_ This KW sets following suite variables:
+| | ... | - duts - List of DUT nodes
+| | ... | - duts_count - Number of DUT nodes.
+| | ... | - dut{n} - DUTx node
+| | ... | - dut{n}_if1 - 1st DUT interface.
+| | ... | - dut{n}_if1_mac - 1st DUT interface MAC address.
+| | ... | - dut{n}_if2 - 2nd DUT interface.
+| | ... | - dut{n}_if2_mac - 2nd DUT interface MAC address.
+| |
+| | ... | *Arguments:*
+| | ... | - ${actions} - Additional setup action. Type: list
+| |
+| | [Arguments] | @{actions}
+| |
+| | ${nic_model_list}= | Create list | ${nic_name}
+| | ${duts}= | Get Matches | ${nodes} | DUT*
+| | FOR | ${dut} | IN | @{duts}
+| | | Append Node | ${nodes['${dut}']} | filter_list=${nic_model_list}
+| | END
+| | Append Node | ${nodes['@{duts}[0]']} | filter_list=${nic_model_list}
+| | Compute Path | always_same_link=${FALSE}
+| | FOR | ${i} | IN RANGE | 1 | ${DATAPATH_INTERFACES_MAX}
+| | | ${dutx_if} | ${dutx}= | Next Interface
+| | | Run Keyword If | '${dutx_if}' == 'None' | EXIT FOR LOOP
+| | | ${dutx_if_mac}= | Get Interface MAC | ${dutx} | ${dutx_if}
+| | | ${dutx_if_ip4_addr}= | Get Interface Ip4 | ${dutx} | ${dutx_if}
+| | | ${dutx_if_ip4_prefix_length}= | Get Interface Ip4 Prefix Length
+| | | ... | ${dutx} | ${dutx_if}
+| | | ${dut_str}= | Get Keyname For DUT | ${dutx} | ${duts}
+| | | ${if1_status} | ${value}= | Run Keyword And Ignore Error
+| | | ... | Variable Should Exist | ${${dut_str}_if1}
+| | | ${if_name}= | Set Variable If | '${if1_status}' == 'PASS'
+| | | ... | if2 | if1
+| | | Set Suite Variable | ${${dut_str}} | ${dutx}
+| | | Set Suite Variable | ${${dut_str}_${if_name}} | ${dutx_if}
+| | | Set Suite Variable | ${${dut_str}_${if_name}_mac} | ${dutx_if_mac}
+| | | Set Suite Variable | ${${dut_str}_${if_name}_ip4_addr}
+| | | ... | ${dutx_if_ip4_addr}
+| | | Set Suite Variable | ${${dut_str}_${if_name}_ip4_prefix}
+| | | ... | ${dutx_if_ip4_prefix_length}
+| | END
+| | Run Keyword If | ${i}>${DATAPATH_INTERFACES_MAX}
+| | ... | Fatal Error | Datapath length exceeded
+| | ${duts_count}= | Get Length | ${duts}
+| | Set Suite Variable | ${duts}
+| | Set Suite Variable | ${duts_count}
+| | FOR | ${action} | IN | @{actions}
+| | | Run Keyword | Additional Suite setup Action For ${action}
+| | END
+
 | Setup suite double link
 | | [Documentation]
 | | ... | Common suite setup for double link tests.
@@ -241,6 +301,7 @@
 | | [Documentation]
 | | ... | Additional Setup for suites which uses WRK TG.
 | |
+| | Verify Program Installed | ${tg} | wrk
 | | Iface update numa node | ${tg}
 # Make sure TRex is stopped
 | | ${running}= | Is TRex running | ${tg}
@@ -257,13 +318,11 @@
 # Set IP on tg_if1
 | | ${intf_name}= | Get Linux interface name | ${tg}
 | | ... | ${tg['interfaces']['${tg_if1}']['pci_address']}
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.10.1 | 24
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.20.1 | 24
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.30.1 | 24
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.40.1 | 24
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.50.1 | 24
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.60.1 | 24
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.70.1 | 24
-| | Set Linux interface IP | ${tg} | ${intf_name} | 192.168.80.1 | 24
+| | FOR | ${ip_addr} | IN | @{wrk_ip_addrs}
+| | | ${ip_addr_on_intf}= | Linux interface has IP | ${tg} | ${intf_name}
+| | | ... | ${ip_addr} | ${wrk_ip_prefix}
+| | | Run Keyword If | ${ip_addr_on_intf}==${False} | Set Linux interface IP
+| | | ... | ${tg} | ${intf_name} | ${ip_addr} | ${wrk_ip_prefix}
+| | END
 | | Set Linux interface up | ${tg} | ${intf_name}
 | | Check wrk | ${tg}
diff --git a/resources/libraries/robot/shared/suite_teardown.robot b/resources/libraries/robot/shared/suite_teardown.robot
index 993d83838f..881f796284 100644
--- a/resources/libraries/robot/shared/suite_teardown.robot
+++ b/resources/libraries/robot/shared/suite_teardown.robot
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -48,3 +48,20 @@
 | | | Cleanup DPDK Environment
 | | | ... | ${nodes['${dut}']} | ${${dut}_if1} | ${${dut}_if2}
 | | END
+
+| Additional Suite Tear Down Action For wrk
+| | [Documentation]
+| | ... | Additional teardown for suites which uses wrk.
+| |
+| | ${intf_name}= | Get Linux interface name | ${tg}
+| | ... | ${tg['interfaces']['${tg_if1}']['pci_address']}
+| | FOR | ${ip_addr} | IN | @{wrk_ip_addrs}
+| | | ${ip_addr_on_intf}= | Linux Interface Has IP | ${tg} | ${intf_name}
+| | | ... | ${ip_addr} | ${wrk_ip_prefix}
+| | | Run Keyword If | ${ip_addr_on_intf}==${True} | Delete Linux Interface IP
+| | | ... | ${tg} | ${intf_name} | ${ip_addr} | ${wrk_ip_prefix}
+| | END
+| | Run Keyword And Ignore Error | PCI Driver Unbind
+| | ... | ${tg} | ${tg['interfaces']['${tg_if1}']['pci_address']}
+| | Run Keyword And Ignore Error | PCI Driver Unbind
+| | ... | ${tg} | ${tg['interfaces']['${tg_if2}']['pci_address']}
diff --git a/resources/libraries/robot/wrk/wrk_utils.robot b/resources/libraries/robot/wrk/wrk_utils.robot
index 1f6261af5a..2a24bce9f3 100644
--- a/resources/libraries/robot/wrk/wrk_utils.robot
+++ b/resources/libraries/robot/wrk/wrk_utils.robot
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 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:
@@ -12,15 +12,21 @@
 # limitations under the License.
 
 *** Settings ***
-| Library  | resources.tools.wrk.wrk
-| Library  | resources.libraries.python.IPUtil
-| Library  | resources.libraries.python.DUTSetup
-| Library  | resources.libraries.python.TrafficGenerator
-| Library  | resources.libraries.python.topology.Topology
+| Library | resources.tools.wrk.wrk
+| Library | resources.libraries.python.IPUtil
+| Library | resources.libraries.python.DUTSetup
+| Library | resources.libraries.python.TrafficGenerator
+| Library | resources.libraries.python.topology.Topology
 |
 | Documentation | L2 keywords to set up wrk and to measure performance
 | ... | parameters using wrk.
 
+*** Variables ***
+| ${wrk_ip_prefix}= | 24
+| @{wrk_ip_addrs}= | 192.168.10.1 | 192.168.20.1 | 192.168.30.1
+| ... | 192.168.40.1 | 192.168.50.1 | 192.168.60.1 | 192.168.70.1
+| ... | 192.168.80.1
+
 *** Keywords ***
 | Measure throughput
 | | [Documentation]