FIX: init interfaces for rdma-core driver
[csit.git] / resources / libraries / python / InterfaceUtil.py
index c0a8957..af34c64 100644 (file)
@@ -1,4 +1,4 @@
-# Copyright (c) 2018 Cisco and/or its affiliates.
+# Copyright (c) 2021 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:
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-"""Interface util library"""
+"""Interface util library."""
 
-from time import time, sleep
+from time import sleep
+from enum import IntEnum
 
+from ipaddress import ip_address
 from robot.api import logger
 
-from resources.libraries.python.ssh import SSH
-from resources.libraries.python.IPUtil import convert_ipv4_netmask_prefix
-from resources.libraries.python.ssh import exec_cmd_no_error
-from resources.libraries.python.topology import NodeType, Topology
-from resources.libraries.python.VatExecutor import VatExecutor, VatTerminal
-from resources.libraries.python.VatJsonUtil import VatJsonUtil
+from resources.libraries.python.Constants import Constants
+from resources.libraries.python.DUTSetup import DUTSetup
+from resources.libraries.python.IPAddress import IPAddress
+from resources.libraries.python.L2Util import L2Util
+from resources.libraries.python.PapiExecutor import PapiSocketExecutor
 from resources.libraries.python.parsers.JsonParser import JsonParser
+from resources.libraries.python.ssh import SSH, exec_cmd, exec_cmd_no_error
+from resources.libraries.python.topology import NodeType, Topology
+from resources.libraries.python.VPPUtil import VPPUtil
+
+
+class InterfaceStatusFlags(IntEnum):
+    """Interface status flags."""
+    IF_STATUS_API_FLAG_ADMIN_UP = 1
+    IF_STATUS_API_FLAG_LINK_UP = 2
+
+
+class MtuProto(IntEnum):
+    """MTU protocol."""
+    MTU_PROTO_API_L3 = 0
+    MTU_PROTO_API_IP4 = 1
+    MTU_PROTO_API_IP6 = 2
+    MTU_PROTO_API_MPLS = 3
+    MTU_PROTO_API_N = 4
+
+
+class LinkDuplex(IntEnum):
+    """Link duplex"""
+    LINK_DUPLEX_API_UNKNOWN = 0
+    LINK_DUPLEX_API_HALF = 1
+    LINK_DUPLEX_API_FULL = 2
+
+
+class SubInterfaceFlags(IntEnum):
+    """Sub-interface flags."""
+    SUB_IF_API_FLAG_NO_TAGS = 1
+    SUB_IF_API_FLAG_ONE_TAG = 2
+    SUB_IF_API_FLAG_TWO_TAGS = 4
+    SUB_IF_API_FLAG_DOT1AD = 8
+    SUB_IF_API_FLAG_EXACT_MATCH = 16
+    SUB_IF_API_FLAG_DEFAULT = 32
+    SUB_IF_API_FLAG_OUTER_VLAN_ID_ANY = 64
+    SUB_IF_API_FLAG_INNER_VLAN_ID_ANY = 128
+    SUB_IF_API_FLAG_DOT1AH = 256
+
+
+class RxMode(IntEnum):
+    """RX mode"""
+    RX_MODE_API_UNKNOWN = 0
+    RX_MODE_API_POLLING = 1
+    RX_MODE_API_INTERRUPT = 2
+    RX_MODE_API_ADAPTIVE = 3
+    RX_MODE_API_DEFAULT = 4
+
+
+class IfType(IntEnum):
+    """Interface type"""
+    # A hw interface
+    IF_API_TYPE_HARDWARE = 0
+    # A sub-interface
+    IF_API_TYPE_SUB = 1
+    IF_API_TYPE_P2P = 2
+    IF_API_TYPE_PIPE = 3
 
 
-class InterfaceUtil(object):
+class LinkBondLoadBalanceAlgo(IntEnum):
+    """Link bonding load balance algorithm."""
+    BOND_API_LB_ALGO_L2 = 0
+    BOND_API_LB_ALGO_L34 = 1
+    BOND_API_LB_ALGO_L23 = 2
+    BOND_API_LB_ALGO_RR = 3
+    BOND_API_LB_ALGO_BC = 4
+    BOND_API_LB_ALGO_AB = 5
+
+
+class LinkBondMode(IntEnum):
+    """Link bonding mode."""
+    BOND_API_MODE_ROUND_ROBIN = 1
+    BOND_API_MODE_ACTIVE_BACKUP = 2
+    BOND_API_MODE_XOR = 3
+    BOND_API_MODE_BROADCAST = 4
+    BOND_API_MODE_LACP = 5
+
+
+class RdmaMode(IntEnum):
+    """RDMA interface mode."""
+    RDMA_API_MODE_AUTO = 0
+    RDMA_API_MODE_IBV = 1
+    RDMA_API_MODE_DV = 2
+
+
+class AfXdpMode(IntEnum):
+    """AF_XDP interface mode."""
+    AF_XDP_API_MODE_AUTO = 0
+    AF_XDP_API_MODE_COPY = 1
+    AF_XDP_API_MODE_ZERO_COPY = 2
+
+
+class InterfaceUtil:
     """General utilities for managing interfaces"""
 
-    __UDEV_IF_RULES_FILE = '/etc/udev/rules.d/10-network.rules'
+    @staticmethod
+    def pci_to_int(pci_str):
+        """Convert PCI address from string format (0000:18:0a.0) to
+        integer representation (169345024).
+
+        :param pci_str: PCI address in string representation.
+        :type pci_str: str
+        :returns: Integer representation of PCI address.
+        :rtype: int
+        """
+        pci = list(pci_str.split(u":")[0:2])
+        pci.extend(pci_str.split(u":")[2].split(u"."))
+
+        return (int(pci[0], 16) | int(pci[1], 16) << 16 |
+                int(pci[2], 16) << 24 | int(pci[3], 16) << 29)
 
     @staticmethod
-    def set_interface_state(node, interface, state, if_type="key"):
+    def pci_to_eth(node, pci_str):
+        """Convert PCI address on DUT to Linux ethernet name.
+
+        :param node: DUT node
+        :param pci_str: PCI address.
+        :type node: dict
+        :type pci_str: str
+        :returns: Ethernet name.
+        :rtype: str
+        """
+        cmd = f"basename /sys/bus/pci/devices/{pci_str}/net/*"
+        try:
+            stdout, _ = exec_cmd_no_error(node, cmd)
+        except RuntimeError:
+            raise RuntimeError(f"Cannot convert {pci_str} to ethernet name!")
+
+        return stdout.strip()
+
+    @staticmethod
+    def get_interface_index(node, interface):
+        """Get interface sw_if_index from topology file.
+
+        :param node: Node where the interface is.
+        :param interface: Numeric index or name string of a specific interface.
+        :type node: dict
+        :type interface: str or int
+        :returns: SW interface index.
+        :rtype: int
+        """
+        try:
+            sw_if_index = int(interface)
+        except ValueError:
+            sw_if_index = Topology.get_interface_sw_index(node, interface)
+            if sw_if_index is None:
+                sw_if_index = \
+                    Topology.get_interface_sw_index_by_name(node, interface)
+        except TypeError as err:
+            raise TypeError(f"Wrong interface format {interface}") from err
+
+        return sw_if_index
+
+    @staticmethod
+    def set_interface_state(node, interface, state, if_type=u"key"):
         """Set interface state on a node.
 
         Function can be used for DUTs as well as for TGs.
@@ -50,146 +197,241 @@ class InterfaceUtil(object):
         :raises ValueError: If the state of interface is unexpected.
         :raises ValueError: If the node has an unknown node type.
         """
-
-        if if_type == "key":
-            if isinstance(interface, basestring):
+        if if_type == u"key":
+            if isinstance(interface, str):
                 sw_if_index = Topology.get_interface_sw_index(node, interface)
                 iface_name = Topology.get_interface_name(node, interface)
             else:
                 sw_if_index = interface
-        elif if_type == "name":
+        elif if_type == u"name":
             iface_key = Topology.get_interface_by_name(node, interface)
             if iface_key is not None:
                 sw_if_index = Topology.get_interface_sw_index(node, iface_key)
             iface_name = interface
         else:
-            raise ValueError("if_type unknown: {}".format(if_type))
+            raise ValueError(f"Unknown if_type: {if_type}")
 
-        if node['type'] == NodeType.DUT:
-            if state == 'up':
-                state = 'admin-up'
-            elif state == 'down':
-                state = 'admin-down'
+        if node[u"type"] == NodeType.DUT:
+            if state == u"up":
+                flags = InterfaceStatusFlags.IF_STATUS_API_FLAG_ADMIN_UP.value
+            elif state == u"down":
+                flags = 0
             else:
-                raise ValueError('Unexpected interface state: {}'.format(state))
-            VatExecutor.cmd_from_template(node, 'set_if_state.vat',
-                                          sw_if_index=sw_if_index, state=state)
-        elif node['type'] == NodeType.TG or node['type'] == NodeType.VM:
-            cmd = 'ip link set {} {}'.format(iface_name, state)
+                raise ValueError(f"Unexpected interface state: {state}")
+            cmd = u"sw_interface_set_flags"
+            err_msg = f"Failed to set interface state on host {node[u'host']}"
+            args = dict(
+                sw_if_index=int(sw_if_index),
+                flags=flags
+            )
+            with PapiSocketExecutor(node) as papi_exec:
+                papi_exec.add(cmd, **args).get_reply(err_msg)
+        elif node[u"type"] == NodeType.TG or node[u"type"] == NodeType.VM:
+            cmd = f"ip link set {iface_name} {state}"
             exec_cmd_no_error(node, cmd, sudo=True)
         else:
-            raise ValueError('Node {} has unknown NodeType: "{}"'
-                             .format(node['host'], node['type']))
+            raise ValueError(
+                f"Node {node[u'host']} has unknown NodeType: {node[u'type']}"
+            )
+
+    @staticmethod
+    def set_interface_state_pci(
+            node, pf_pcis, namespace=None, state=u"up"):
+        """Set operational state for interface specified by PCI address.
+
+        :param node: Topology node.
+        :param pf_pcis: List of node's interfaces PCI addresses.
+        :param namespace: Exec command in namespace. (Optional, Default: none)
+        :param state: Up/Down. (Optional, default: up)
+        :type nodes: dict
+        :type pf_pcis: list
+        :type namespace: str
+        :type state: str
+        """
+        for pf_pci in pf_pcis:
+            pf_eth = InterfaceUtil.pci_to_eth(node, pf_pci)
+            InterfaceUtil.set_linux_interface_state(
+                node, pf_eth, namespace=namespace, state=state
+            )
 
     @staticmethod
-    def set_interface_ethernet_mtu(node, iface_key, mtu):
-        """Set Ethernet MTU for specified interface.
+    def set_interface_mtu(node, pf_pcis, mtu=9200):
+        """Set Ethernet MTU for specified interfaces.
+
+        :param node: Topology node.
+        :param pf_pcis: List of node's interfaces PCI addresses.
+        :param mtu: MTU to set. Default: 9200.
+        :type nodes: dict
+        :type pf_pcis: list
+        :type mtu: int
+        :raises RuntimeError: If failed to set MTU on interface.
+        """
+        for pf_pci in pf_pcis:
+            pf_eth = InterfaceUtil.pci_to_eth(node, pf_pci)
+            cmd = f"ip link set {pf_eth} mtu {mtu}"
+            exec_cmd_no_error(node, cmd, sudo=True)
 
-        Function can be used only for TGs.
+    @staticmethod
+    def set_interface_channels(
+            node, pf_pcis, num_queues=1, channel=u"combined"):
+        """Set interface channels for specified interfaces.
+
+        :param node: Topology node.
+        :param pf_pcis: List of node's interfaces PCI addresses.
+        :param num_queues: Number of channels. (Optional, Default: 1)
+        :param channel: Channel type. (Optional, Default: combined)
+        :type nodes: dict
+        :type pf_pcis: list
+        :type num_queues: int
+        :type channel: str
+        """
+        for pf_pci in pf_pcis:
+            pf_eth = InterfaceUtil.pci_to_eth(node, pf_pci)
+            cmd = f"ethtool --set-channels {pf_eth} {channel} {num_queues}"
+            exec_cmd_no_error(node, cmd, sudo=True)
 
-        :param node: Node where the interface is.
-        :param iface_key: Interface key from topology file.
-        :param mtu: MTU to set.
+    @staticmethod
+    def set_interface_flow_control(node, pf_pcis, rxf=u"off", txf=u"off"):
+        """Set Ethernet flow control for specified interfaces.
+
+        :param node: Topology node.
+        :param pf_pcis: List of node's interfaces PCI addresses.
+        :param rxf: RX flow. (Optional, Default: off).
+        :param txf: TX flow. (Optional, Default: off).
+        :type nodes: dict
+        :type pf_pcis: list
+        :type rxf: str
+        :type txf: str
+        """
+        for pf_pci in pf_pcis:
+            pf_eth = InterfaceUtil.pci_to_eth(node, pf_pci)
+            cmd = f"ethtool -A {pf_eth} rx {rxf} tx {txf}"
+            ret_code, _, _ = exec_cmd(node, cmd, sudo=True)
+            if int(ret_code) not in (0, 78):
+                raise RuntimeError("Failed to set flow control on {pf_eth}!")
+
+    @staticmethod
+    def set_pci_parameter(node, pf_pcis, key, value):
+        """Set PCI parameter for specified interfaces.
+
+        :param node: Topology node.
+        :param pf_pcis: List of node's interfaces PCI addresses.
+        :param key: Key to set.
+        :param value: Value to set.
+        :type nodes: dict
+        :type pf_pcis: list
+        :type key: str
+        :type value: str
+        """
+        for pf_pci in pf_pcis:
+            cmd = f"setpci -s {pf_pci} {key}={value}"
+            exec_cmd_no_error(node, cmd, sudo=True)
+
+    @staticmethod
+    def vpp_set_interface_mtu(node, interface, mtu=9200):
+        """Set Ethernet MTU on interface.
+
+        :param node: VPP node.
+        :param interface: Interface to setup MTU. Default: 9200.
+        :param mtu: Ethernet MTU size in Bytes.
         :type node: dict
-        :type iface_key: str
+        :type interface: str or int
         :type mtu: int
-        :returns: Nothing.
-        :raises ValueError: If the node type is "DUT".
-        :raises ValueError: If the node has an unknown node type.
         """
-        if node['type'] == NodeType.DUT:
-            raise ValueError('Node {}: Setting Ethernet MTU for interface '
-                             'on DUT nodes not supported', node['host'])
-        elif node['type'] == NodeType.TG:
-            iface_name = Topology.get_interface_name(node, iface_key)
-            cmd = 'ip link set {} mtu {}'.format(iface_name, mtu)
-            exec_cmd_no_error(node, cmd, sudo=True)
+        if isinstance(interface, str):
+            sw_if_index = Topology.get_interface_sw_index(node, interface)
         else:
-            raise ValueError('Node {} has unknown NodeType: "{}"'
-                             .format(node['host'], node['type']))
+            sw_if_index = interface
 
-    @staticmethod
-    def set_default_ethernet_mtu_on_all_interfaces_on_node(node):
-        """Set default Ethernet MTU on all interfaces on node.
+        cmd = u"hw_interface_set_mtu"
+        err_msg = f"Failed to set interface MTU on host {node[u'host']}"
+        args = dict(
+            sw_if_index=sw_if_index,
+            mtu=int(mtu)
+        )
+        try:
+            with PapiSocketExecutor(node) as papi_exec:
+                papi_exec.add(cmd, **args).get_reply(err_msg)
+        except AssertionError as err:
+            logger.debug(f"Setting MTU failed.\n{err}")
 
-        Function can be used only for TGs.
+    @staticmethod
+    def vpp_set_interfaces_mtu_on_node(node, mtu=9200):
+        """Set Ethernet MTU on all interfaces.
 
-        :param node: Node where to set default MTU.
+        :param node: VPP node.
+        :param mtu: Ethernet MTU size in Bytes. Default: 9200.
         :type node: dict
-        :returns: Nothing.
+        :type mtu: int
+        """
+        for interface in node[u"interfaces"]:
+            InterfaceUtil.vpp_set_interface_mtu(node, interface, mtu)
+
+    @staticmethod
+    def vpp_set_interfaces_mtu_on_all_duts(nodes, mtu=9200):
+        """Set Ethernet MTU on all interfaces on all DUTs.
+
+        :param nodes: VPP nodes.
+        :param mtu: Ethernet MTU size in Bytes. Default: 9200.
+        :type nodes: dict
+        :type mtu: int
         """
-        for ifc in node['interfaces']:
-            InterfaceUtil.set_interface_ethernet_mtu(node, ifc, 1500)
+        for node in nodes.values():
+            if node[u"type"] == NodeType.DUT:
+                InterfaceUtil.vpp_set_interfaces_mtu_on_node(node, mtu)
 
     @staticmethod
-    def vpp_node_interfaces_ready_wait(node, timeout=10):
+    def vpp_node_interfaces_ready_wait(node, retries=15):
         """Wait until all interfaces with admin-up are in link-up state.
 
         :param node: Node to wait on.
-        :param timeout: Waiting timeout in seconds (optional, default 10s).
+        :param retries: Number of retries to check interface status (optional,
+            default 15).
         :type node: dict
-        :type timeout: int
+        :type retries: int
         :returns: Nothing.
-        :raises RuntimeError: If the timeout period value has elapsed.
+        :raises RuntimeError: If any interface is not in link-up state after
+            defined number of retries.
         """
-        if_ready = False
-        not_ready = []
-        start = time()
-        while not if_ready:
+        for _ in range(0, retries):
+            not_ready = list()
             out = InterfaceUtil.vpp_get_interface_data(node)
-            if time() - start > timeout:
-                for interface in out:
-                    if interface.get('admin_up_down') == 1:
-                        if interface.get('link_up_down') != 1:
-                            logger.debug('{0} link-down'.format(
-                                interface.get('interface_name')))
-                raise RuntimeError('timeout, not up {0}'.format(not_ready))
-            not_ready = []
             for interface in out:
-                if interface.get('admin_up_down') == 1:
-                    if interface.get('link_up_down') != 1:
-                        not_ready.append(interface.get('interface_name'))
-            if not not_ready:
-                if_ready = True
-            else:
-                logger.debug('Interfaces still in link-down state: {0}, '
-                             'waiting...'.format(not_ready))
+                if interface.get(u"flags") == 1:
+                    not_ready.append(interface.get(u"interface_name"))
+            if not_ready:
+                logger.debug(
+                    f"Interfaces still not in link-up state:\n{not_ready}"
+                )
                 sleep(1)
+            else:
+                break
+        else:
+            err = f"Timeout, interfaces not up:\n{not_ready}" \
+                if u"not_ready" in locals() else u"No check executed!"
+            raise RuntimeError(err)
 
     @staticmethod
-    def vpp_nodes_interfaces_ready_wait(nodes, timeout=10):
-        """Wait until all interfaces with admin-up are in link-up state for
-        listed nodes.
-
-        :param nodes: List of nodes to wait on.
-        :param timeout: Seconds to wait per node for all interfaces to come up.
-        :type nodes: list
-        :type timeout: int
-        :returns: Nothing.
-        """
-        for node in nodes:
-            InterfaceUtil.vpp_node_interfaces_ready_wait(node, timeout)
-
-    @staticmethod
-    def all_vpp_interfaces_ready_wait(nodes, timeout=10):
+    def all_vpp_interfaces_ready_wait(nodes, retries=15):
         """Wait until all interfaces with admin-up are in link-up state for all
         nodes in the topology.
 
         :param nodes: Nodes in the topology.
-        :param timeout: Seconds to wait per node for all interfaces to come up.
+        :param retries: Number of retries to check interface status (optional,
+            default 15).
         :type nodes: dict
-        :type timeout: int
+        :type retries: int
         :returns: Nothing.
         """
         for node in nodes.values():
-            if node['type'] == NodeType.DUT:
-                InterfaceUtil.vpp_node_interfaces_ready_wait(node, timeout)
+            if node[u"type"] == NodeType.DUT:
+                InterfaceUtil.vpp_node_interfaces_ready_wait(node, retries)
 
     @staticmethod
     def vpp_get_interface_data(node, interface=None):
         """Get all interface data from a VPP node. If a name or
         sw_interface_index is provided, return only data for the matching
-        interface.
+        interface(s).
 
         :param node: VPP node to get interface data from.
         :param interface: Numeric index or name string of a specific interface.
@@ -201,23 +443,56 @@ class InterfaceUtil(object):
         :raises TypeError: if the data type of interface is neither basestring
             nor int.
         """
-        with VatTerminal(node) as vat:
-            response = vat.vat_terminal_exec_cmd_from_template(
-                "interface_dump.vat")
-
-        data = response[0]
+        def process_if_dump(if_dump):
+            """Process interface dump.
+
+            :param if_dump: Interface dump.
+            :type if_dump: dict
+            :returns: Processed interface dump.
+            :rtype: dict
+            """
+            if_dump[u"l2_address"] = str(if_dump[u"l2_address"])
+            if_dump[u"b_dmac"] = str(if_dump[u"b_dmac"])
+            if_dump[u"b_smac"] = str(if_dump[u"b_smac"])
+            if_dump[u"flags"] = if_dump[u"flags"].value
+            if_dump[u"type"] = if_dump[u"type"].value
+            if_dump[u"link_duplex"] = if_dump[u"link_duplex"].value
+            if_dump[u"sub_if_flags"] = if_dump[u"sub_if_flags"].value \
+                if hasattr(if_dump[u"sub_if_flags"], u"value") \
+                else int(if_dump[u"sub_if_flags"])
+
+            return if_dump
 
         if interface is not None:
-            if isinstance(interface, basestring):
-                param = "interface_name"
+            if isinstance(interface, str):
+                param = u"interface_name"
             elif isinstance(interface, int):
-                param = "sw_if_index"
+                param = u"sw_if_index"
             else:
-                raise TypeError
-            for data_if in data:
-                if data_if[param] == interface:
-                    return data_if
-            return dict()
+                raise TypeError(f"Wrong interface format {interface}")
+        else:
+            param = u""
+
+        cmd = u"sw_interface_dump"
+        args = dict(
+            name_filter_valid=False,
+            name_filter=u""
+        )
+        err_msg = f"Failed to get interface dump on host {node[u'host']}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)
+        logger.debug(f"Received data:\n{details!r}")
+
+        data = list() if interface is None else dict()
+        for dump in details:
+            if interface is None:
+                data.append(process_if_dump(dump))
+            elif str(dump.get(param)).rstrip(u"\x00") == str(interface):
+                data = process_if_dump(dump)
+                break
+
+        logger.debug(f"Interface data:\n{data}")
         return data
 
     @staticmethod
@@ -232,19 +507,32 @@ class InterfaceUtil(object):
         :returns: Name of the given interface.
         :rtype: str
         """
-
         if_data = InterfaceUtil.vpp_get_interface_data(node, sw_if_index)
-        if if_data['sup_sw_if_index'] != if_data['sw_if_index']:
+        if if_data[u"sup_sw_if_index"] != if_data[u"sw_if_index"]:
             if_data = InterfaceUtil.vpp_get_interface_data(
-                node, if_data['sup_sw_if_index'])
-        try:
-            if_name = if_data["interface_name"]
-        except KeyError:
-            if_name = None
-        return if_name
+                node, if_data[u"sup_sw_if_index"]
+            )
+
+        return if_data.get(u"interface_name")
 
     @staticmethod
-    def vpp_get_interface_mac(node, interface=None):
+    def vpp_get_interface_sw_index(node, interface_name):
+        """Get interface name for the given SW interface index from actual
+        interface dump.
+
+        :param node: VPP node to get interface data from.
+        :param interface_name: Interface name.
+        :type node: dict
+        :type interface_name: str
+        :returns: Name of the given interface.
+        :rtype: str
+        """
+        if_data = InterfaceUtil.vpp_get_interface_data(node, interface_name)
+
+        return if_data.get(u"sw_if_index")
+
+    @staticmethod
+    def vpp_get_interface_mac(node, interface):
         """Get MAC address for the given interface from actual interface dump.
 
         :param node: VPP node to get interface data from.
@@ -254,57 +542,33 @@ class InterfaceUtil(object):
         :returns: MAC address.
         :rtype: str
         """
-
         if_data = InterfaceUtil.vpp_get_interface_data(node, interface)
-        if if_data['sup_sw_if_index'] != if_data['sw_if_index']:
+        if if_data[u"sup_sw_if_index"] != if_data[u"sw_if_index"]:
             if_data = InterfaceUtil.vpp_get_interface_data(
-                node, if_data['sup_sw_if_index'])
-        mac_data = [str(hex(item))[2:] for item in if_data['l2_address'][:6]]
-        mac_data_nice = []
-        for item in mac_data:
-            if len(item) == 1:
-                item = '0' + item
-            mac_data_nice.append(item)
-        mac = ":".join(mac_data_nice)
-        return mac
+                node, if_data[u"sup_sw_if_index"])
 
-    @staticmethod
-    def vpp_get_interface_ip_addresses(node, interface, ip_version):
-        """Get list of IP addresses from an interface on a VPP node.
-
-         :param node: VPP node to get data from.
-         :param interface: Name of an interface on the VPP node.
-         :param ip_version: IP protocol version (ipv4 or ipv6).
-         :type node: dict
-         :type interface: str
-         :type ip_version: str
-         :returns: List of dictionaries, each containing IP address, subnet
-            prefix length and also the subnet mask for ipv4 addresses.
-            Note: A single interface may have multiple IP addresses assigned.
-         :rtype: list
-        """
+        return if_data.get(u"l2_address")
 
-        try:
-            sw_if_index = Topology.convert_interface_reference(
-                node, interface, "sw_if_index")
-        except RuntimeError:
-            if isinstance(interface, basestring):
-                sw_if_index = InterfaceUtil.get_sw_if_index(node, interface)
-            else:
-                raise
-
-        with VatTerminal(node) as vat:
-            response = vat.vat_terminal_exec_cmd_from_template(
-                "ip_address_dump.vat", ip_version=ip_version,
-                sw_if_index=sw_if_index)
-
-        data = response[0]
+    @staticmethod
+    def vpp_set_interface_mac(node, interface, mac):
+        """Set MAC address for the given interface.
 
-        if ip_version == "ipv4":
-            for item in data:
-                item["netmask"] = convert_ipv4_netmask_prefix(
-                    item["prefix_length"])
-        return data
+        :param node: VPP node to set interface MAC.
+        :param interface: Numeric index or name string of a specific interface.
+        :param mac: Required MAC address.
+        :type node: dict
+        :type interface: int or str
+        :type mac: str
+        """
+        cmd = u"sw_interface_set_mac_address"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            mac_address=L2Util.mac_to_bin(mac)
+        )
+        err_msg = f"Failed to set MAC address of interface {interface}" \
+            f"on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
 
     @staticmethod
     def tg_set_interface_driver(node, pci_addr, driver):
@@ -316,7 +580,6 @@ class InterfaceUtil(object):
         :type node: dict
         :type pci_addr: str
         :type driver: str
-        :returns: None.
         :raises RuntimeError: If unbinding from the current driver fails.
         :raises RuntimeError: If binding to the new driver fails.
         """
@@ -329,20 +592,17 @@ class InterfaceUtil(object):
 
         # Unbind from current driver
         if old_driver is not None:
-            cmd = 'sh -c "echo {0} > /sys/bus/pci/drivers/{1}/unbind"'\
-                .format(pci_addr, old_driver)
-            (ret_code, _, _) = ssh.exec_command_sudo(cmd)
+            cmd = f"sh -c \"echo {pci_addr} > " \
+                f"/sys/bus/pci/drivers/{old_driver}/unbind\""
+            ret_code, _, _ = ssh.exec_command_sudo(cmd)
             if int(ret_code) != 0:
-                raise RuntimeError("'{0}' failed on '{1}'"
-                                   .format(cmd, node['host']))
+                raise RuntimeError(f"'{cmd}' failed on '{node[u'host']}'")
 
         # Bind to the new driver
-        cmd = 'sh -c "echo {0} > /sys/bus/pci/drivers/{1}/bind"'\
-            .format(pci_addr, driver)
-        (ret_code, _, _) = ssh.exec_command_sudo(cmd)
+        cmd = f"sh -c \"echo {pci_addr} > /sys/bus/pci/drivers/{driver}/bind\""
+        ret_code, _, _ = ssh.exec_command_sudo(cmd)
         if int(ret_code) != 0:
-            raise RuntimeError("'{0}' failed on '{1}'"
-                               .format(cmd, node['host']))
+            raise RuntimeError(f"'{cmd}' failed on '{node[u'host']}'")
 
     @staticmethod
     def tg_get_interface_driver(node, pci_addr):
@@ -354,92 +614,9 @@ class InterfaceUtil(object):
         :type pci_addr: str
         :returns: Interface driver or None if not found.
         :rtype: str
-        :raises RuntimeError: If it is not possible to get the interface driver
-            information from the node.
-
-        .. note::
-            # lspci -vmmks 0000:00:05.0
-            Slot:   00:05.0
-            Class:  Ethernet controller
-            Vendor: Red Hat, Inc
-            Device: Virtio network device
-            SVendor:        Red Hat, Inc
-            SDevice:        Device 0001
-            PhySlot:        5
-            Driver: virtio-pci
+        :raises RuntimeError: If PCI rescan or lspci command execution failed.
         """
-        ssh = SSH()
-        ssh.connect(node)
-
-        for i in range(3):
-            logger.trace('Try {}: Get interface driver'.format(i))
-            cmd = 'sh -c "echo 1 > /sys/bus/pci/rescan"'
-            (ret_code, _, _) = ssh.exec_command_sudo(cmd)
-            if int(ret_code) != 0:
-                raise RuntimeError("'{0}' failed on '{1}'"
-                                   .format(cmd, node['host']))
-
-            cmd = 'lspci -vmmks {0}'.format(pci_addr)
-            (ret_code, stdout, _) = ssh.exec_command(cmd)
-            if int(ret_code) != 0:
-                raise RuntimeError("'{0}' failed on '{1}'"
-                                   .format(cmd, node['host']))
-
-            for line in stdout.splitlines():
-                if len(line) == 0:
-                    continue
-                try:
-                    (name, value) = line.split("\t", 1)
-                except ValueError:
-                    if name != "Driver:":
-                        pass
-                    else:
-                        return None
-                if name == 'Driver:':
-                    return value if value else None
-        else:
-            raise RuntimeError('Get interface driver for: {0}'
-                               .format(pci_addr))
-
-    @staticmethod
-    def tg_set_interfaces_udev_rules(node):
-        """Set udev rules for interfaces.
-
-        Create udev rules file in /etc/udev/rules.d where are rules for each
-        interface used by TG node, based on MAC interface has specific name.
-        So after unbind and bind again to kernel driver interface has same
-        name as before. This must be called after TG has set name for each
-        port in topology dictionary.
-        udev rule example
-        SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="52:54:00:e1:8a:0f",
-        NAME="eth1"
-
-        :param node: Node to set udev rules on (must be TG node).
-        :type node: dict
-        :raises RuntimeError: If setting of udev rules fails.
-        """
-        ssh = SSH()
-        ssh.connect(node)
-
-        cmd = 'rm -f {0}'.format(InterfaceUtil.__UDEV_IF_RULES_FILE)
-        (ret_code, _, _) = ssh.exec_command_sudo(cmd)
-        if int(ret_code) != 0:
-            raise RuntimeError("'{0}' failed on '{1}'"
-                               .format(cmd, node['host']))
-
-        for interface in node['interfaces'].values():
-            rule = 'SUBSYSTEM==\\"net\\", ACTION==\\"add\\", ATTR{address}' + \
-                   '==\\"' + interface['mac_address'] + '\\", NAME=\\"' + \
-                   interface['name'] + '\\"'
-            cmd = 'sh -c "echo \'{0}\' >> {1}"'.format(
-                rule, InterfaceUtil.__UDEV_IF_RULES_FILE)
-            (ret_code, _, _) = ssh.exec_command_sudo(cmd)
-            if int(ret_code) != 0:
-                raise RuntimeError("'{0}' failed on '{1}'"
-                                   .format(cmd, node['host']))
-
-        cmd = '/etc/init.d/udev restart'
-        ssh.exec_command_sudo(cmd)
+        return DUTSetup.get_pci_dev_driver(node, pci_addr)
 
     @staticmethod
     def tg_set_interfaces_default_driver(node):
@@ -448,10 +625,10 @@ class InterfaceUtil(object):
         :param node: Node to setup interfaces driver on (must be TG node).
         :type node: dict
         """
-        for interface in node['interfaces'].values():
-            InterfaceUtil.tg_set_interface_driver(node,
-                                                  interface['pci_address'],
-                                                  interface['driver'])
+        for interface in node[u"interfaces"].values():
+            InterfaceUtil.tg_set_interface_driver(
+                node, interface[u"pci_address"], interface[u"driver"]
+            )
 
     @staticmethod
     def update_vpp_interface_data_on_node(node):
@@ -459,18 +636,34 @@ class InterfaceUtil(object):
 
         Updates interface names, software if index numbers and any other details
         generated specifically by vpp that are unknown before testcase run.
-        It does this by dumping interface list to JSON output from all
-        devices using vpp_api_test, and pairing known information from topology
-        (mac address/pci address of interface) to state from VPP.
+        It does this by dumping interface list from all devices using python
+        api, and pairing known information from topology (mac address) to state
+        from VPP.
 
         :param node: Node selected from DICT__nodes.
         :type node: dict
         """
-        vat_executor = VatExecutor()
-        vat_executor.execute_script_json_out("dump_interfaces.vat", node)
-        interface_dump_json = vat_executor.get_script_stdout()
-        VatJsonUtil.update_vpp_interface_data_from_json(node,
-                                                        interface_dump_json)
+        interface_list = InterfaceUtil.vpp_get_interface_data(node)
+        interface_dict = dict()
+        for ifc in interface_list:
+            interface_dict[ifc[u"l2_address"]] = ifc
+
+        for if_name, if_data in node[u"interfaces"].items():
+            ifc_dict = interface_dict.get(if_data[u"mac_address"])
+            if ifc_dict is not None:
+                if_data[u"name"] = ifc_dict[u"interface_name"]
+                if_data[u"vpp_sw_index"] = ifc_dict[u"sw_if_index"]
+                if_data[u"mtu"] = ifc_dict[u"mtu"][0]
+                logger.trace(
+                    f"Interface {if_name} found by MAC "
+                    f"{if_data[u'mac_address']}"
+                )
+            else:
+                logger.trace(
+                    f"Interface {if_name} not found by MAC "
+                    f"{if_data[u'mac_address']}"
+                )
+                if_data[u"vpp_sw_index"] = None
 
     @staticmethod
     def update_nic_interface_names(node):
@@ -481,24 +674,22 @@ class InterfaceUtil(object):
         :param node: Node dictionary.
         :type node: dict
         """
-        for ifc in node['interfaces'].values():
-            if_pci = ifc['pci_address'].replace('.', ':').split(':')
-            bus = '{:x}'.format(int(if_pci[1], 16))
-            dev = '{:x}'.format(int(if_pci[2], 16))
-            fun = '{:x}'.format(int(if_pci[3], 16))
-            loc = '{bus}/{dev}/{fun}'.format(bus=bus, dev=dev, fun=fun)
-            if ifc['model'] == 'Intel-XL710':
-                ifc['name'] = 'FortyGigabitEthernet{loc}'.format(loc=loc)
-            elif ifc['model'] == 'Intel-X710':
-                ifc['name'] = 'TenGigabitEthernet{loc}'.format(loc=loc)
-            elif ifc['model'] == 'Intel-X520-DA2':
-                ifc['name'] = 'TenGigabitEthernet{loc}'.format(loc=loc)
-            elif ifc['model'] == 'Cisco-VIC-1385':
-                ifc['name'] = 'FortyGigabitEthernet{loc}'.format(loc=loc)
-            elif ifc['model'] == 'Cisco-VIC-1227':
-                ifc['name'] = 'TenGigabitEthernet{loc}'.format(loc=loc)
+        for ifc in node[u"interfaces"].values():
+            if_pci = ifc[u"pci_address"].replace(u".", u":").split(u":")
+            loc = f"{int(if_pci[1], 16):x}/{int(if_pci[2], 16):x}/" \
+                f"{int(if_pci[3], 16):x}"
+            if ifc[u"model"] == u"Intel-XL710":
+                ifc[u"name"] = f"FortyGigabitEthernet{loc}"
+            elif ifc[u"model"] == u"Intel-X710":
+                ifc[u"name"] = f"TenGigabitEthernet{loc}"
+            elif ifc[u"model"] == u"Intel-X520-DA2":
+                ifc[u"name"] = f"TenGigabitEthernet{loc}"
+            elif ifc[u"model"] == u"Cisco-VIC-1385":
+                ifc[u"name"] = f"FortyGigabitEthernet{loc}"
+            elif ifc[u"model"] == u"Cisco-VIC-1227":
+                ifc[u"name"] = f"TenGigabitEthernet{loc}"
             else:
-                ifc['name'] = 'UnknownEthernet{loc}'.format(loc=loc)
+                ifc[u"name"] = f"UnknownEthernet{loc}"
 
     @staticmethod
     def update_nic_interface_names_on_all_duts(nodes):
@@ -510,7 +701,7 @@ class InterfaceUtil(object):
         :type nodes: dict
         """
         for node in nodes.values():
-            if node['type'] == NodeType.DUT:
+            if node[u"type"] == NodeType.DUT:
                 InterfaceUtil.update_nic_interface_names(node)
 
     @staticmethod
@@ -525,8 +716,6 @@ class InterfaceUtil(object):
             "52:54:00:e1:8a:0f": "eth2"
             "00:00:00:00:00:00": "lo"
 
-        .. note:: TODO: parse lshw -json instead
-
         :param node: Node selected from DICT__nodes.
         :type node: dict
         :raises RuntimeError: If getting of interface name and MAC fails.
@@ -538,22 +727,20 @@ class InterfaceUtil(object):
         ssh = SSH()
         ssh.connect(node)
 
-        cmd = ('for dev in `ls /sys/class/net/`; do echo "\\"`cat '
-               '/sys/class/net/$dev/address`\\": \\"$dev\\""; done;')
+        cmd = u'for dev in `ls /sys/class/net/`; do echo "\\"`cat ' \
+              u'/sys/class/net/$dev/address`\\": \\"$dev\\""; done;'
 
-        (ret_code, stdout, _) = ssh.exec_command(cmd)
+        ret_code, stdout, _ = ssh.exec_command(cmd)
         if int(ret_code) != 0:
-            raise RuntimeError('Get interface name and MAC failed')
-        tmp = "{" + stdout.rstrip().replace('\n', ',') + "}"
+            raise RuntimeError(u"Get interface name and MAC failed")
+        tmp = u"{" + stdout.rstrip().replace(u"\n", u",") + u"}"
+
         interfaces = JsonParser().parse_data(tmp)
-        for interface in node['interfaces'].values():
-            name = interfaces.get(interface['mac_address'])
+        for interface in node[u"interfaces"].values():
+            name = interfaces.get(interface[u"mac_address"])
             if name is None:
                 continue
-            interface['name'] = name
-
-        # Set udev rules for interfaces
-        InterfaceUtil.tg_set_interfaces_udev_rules(node)
+            interface[u"name"] = name
 
     @staticmethod
     def iface_update_numa_node(node):
@@ -564,121 +751,91 @@ class InterfaceUtil(object):
         :type node: dict
         :returns: Nothing.
         :raises ValueError: If numa node ia less than 0.
-        :raises RuntimeError: If update of numa node failes.
+        :raises RuntimeError: If update of numa node failed.
         """
         ssh = SSH()
         for if_key in Topology.get_node_interfaces(node):
             if_pci = Topology.get_interface_pci_addr(node, if_key)
             ssh.connect(node)
-            cmd = "cat /sys/bus/pci/devices/{}/numa_node".format(if_pci)
+            cmd = f"cat /sys/bus/pci/devices/{if_pci}/numa_node"
             for _ in range(3):
-                (ret, out, _) = ssh.exec_command(cmd)
+                ret, out, _ = ssh.exec_command(cmd)
                 if ret == 0:
                     try:
-                        numa_node = int(out)
-                        if numa_node < 0:
-                            raise ValueError
+                        numa_node = 0 if int(out) < 0 else int(out)
                     except ValueError:
-                        logger.trace('Reading numa location failed for: {0}'\
-                            .format(if_pci))
+                        logger.trace(
+                            f"Reading numa location failed for: {if_pci}"
+                        )
                     else:
-                        Topology.set_interface_numa_node(node, if_key,
-                                                         numa_node)
+                        Topology.set_interface_numa_node(
+                            node, if_key, numa_node
+                        )
                         break
             else:
-                raise RuntimeError('Update numa node failed for: {0}'\
-                    .format(if_pci))
-
-    @staticmethod
-    def update_all_numa_nodes(nodes, skip_tg=False):
-        """For all nodes and all their interfaces from topology file update numa
-        node information based on information from the node.
-
-        :param nodes: Nodes in the topology.
-        :param skip_tg: Skip TG node
-        :type nodes: dict
-        :type skip_tg: bool
-        :returns: Nothing.
-        """
-        for node in nodes.values():
-            if node['type'] == NodeType.DUT:
-                InterfaceUtil.iface_update_numa_node(node)
-            elif node['type'] == NodeType.TG and not skip_tg:
-                InterfaceUtil.iface_update_numa_node(node)
+                raise RuntimeError(f"Update numa node failed for: {if_pci}")
 
     @staticmethod
-    def update_all_interface_data_on_all_nodes(nodes, skip_tg=False,
-                                               numa_node=False):
+    def update_all_interface_data_on_all_nodes(
+            nodes, skip_tg=False, skip_vpp=False):
         """Update interface names on all nodes in DICT__nodes.
 
         This method updates the topology dictionary by querying interface lists
         of all nodes mentioned in the topology dictionary.
 
         :param nodes: Nodes in the topology.
-        :param skip_tg: Skip TG node
-        :param numa_node: Retrieve numa_node location.
+        :param skip_tg: Skip TG node.
+        :param skip_vpp: Skip VPP node.
         :type nodes: dict
         :type skip_tg: bool
-        :type numa_node: bool
+        :type skip_vpp: bool
         """
-        for node_data in nodes.values():
-            if node_data['type'] == NodeType.DUT:
-                InterfaceUtil.update_vpp_interface_data_on_node(node_data)
-            elif node_data['type'] == NodeType.TG and not skip_tg:
-                InterfaceUtil.update_tg_interface_data_on_node(node_data)
-
-            if numa_node:
-                if node_data['type'] == NodeType.DUT:
-                    InterfaceUtil.iface_update_numa_node(node_data)
-                elif node_data['type'] == NodeType.TG and not skip_tg:
-                    InterfaceUtil.iface_update_numa_node(node_data)
+        for node in nodes.values():
+            if node[u"type"] == NodeType.DUT and not skip_vpp:
+                InterfaceUtil.update_vpp_interface_data_on_node(node)
+            elif node[u"type"] == NodeType.TG and not skip_tg:
+                InterfaceUtil.update_tg_interface_data_on_node(node)
+            InterfaceUtil.iface_update_numa_node(node)
 
     @staticmethod
     def create_vlan_subinterface(node, interface, vlan):
-        """Create VLAN subinterface on node.
+        """Create VLAN sub-interface on node.
 
         :param node: Node to add VLAN subinterface on.
-        :param interface: Interface name on which create VLAN subinterface.
+        :param interface: Interface name or index on which create VLAN
+            subinterface.
         :param vlan: VLAN ID of the subinterface to be created.
         :type node: dict
-        :type interface: str
+        :type interface: str on int
         :type vlan: int
         :returns: Name and index of created subinterface.
         :rtype: tuple
         :raises RuntimeError: if it is unable to create VLAN subinterface on the
-            node.
+            node or interface cannot be converted.
         """
-        iface_key = Topology.get_interface_by_name(node, interface)
-        sw_if_index = Topology.get_interface_sw_index(node, iface_key)
-
-        output = VatExecutor.cmd_from_template(node, "create_vlan_subif.vat",
-                                               sw_if_index=sw_if_index,
-                                               vlan=vlan)
-        if output[0]["retval"] == 0:
-            sw_subif_idx = output[0]["sw_if_index"]
-            logger.trace('VLAN subinterface with sw_if_index {} and VLAN ID {} '
-                         'created on node {}'.format(sw_subif_idx,
-                                                     vlan, node['host']))
-            if_key = Topology.add_new_port(node, "vlan_subif")
-            Topology.update_interface_sw_if_index(node, if_key, sw_subif_idx)
-            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_subif_idx)
-            Topology.update_interface_name(node, if_key, ifc_name)
-        else:
-            raise RuntimeError('Unable to create VLAN subinterface on node {}'
-                               .format(node['host']))
+        sw_if_index = InterfaceUtil.get_interface_index(node, interface)
 
-        with VatTerminal(node, False) as vat:
-            vat.vat_terminal_exec_cmd('exec show interfaces')
+        cmd = u"create_vlan_subif"
+        args = dict(
+            sw_if_index=sw_if_index,
+            vlan_id=int(vlan)
+        )
+        err_msg = f"Failed to create VLAN sub-interface on host {node[u'host']}"
 
-        return '{}.{}'.format(interface, vlan), sw_subif_idx
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        if_key = Topology.add_new_port(node, u"vlan_subif")
+        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
+        ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)
+        Topology.update_interface_name(node, if_key, ifc_name)
+
+        return f"{interface}.{vlan}", sw_if_index
 
     @staticmethod
     def create_vxlan_interface(node, vni, source_ip, destination_ip):
         """Create VXLAN interface and return sw if index of created interface.
 
-        Executes "vxlan_add_del_tunnel src {src} dst {dst} vni {vni}" VAT
-        command on the node.
-
         :param node: Node where to create VXLAN interface.
         :param vni: VXLAN Network Identifier.
         :param source_ip: Source IP of a VXLAN Tunnel End Point.
@@ -692,22 +849,61 @@ class InterfaceUtil(object):
         :raises RuntimeError: if it is unable to create VxLAN interface on the
             node.
         """
-        output = VatExecutor.cmd_from_template(node, "vxlan_create.vat",
-                                               src=source_ip,
-                                               dst=destination_ip,
-                                               vni=vni)
-        output = output[0]
-
-        if output["retval"] == 0:
-            sw_if_idx = output["sw_if_index"]
-            if_key = Topology.add_new_port(node, "vxlan_tunnel")
-            Topology.update_interface_sw_if_index(node, if_key, sw_if_idx)
-            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_idx)
-            Topology.update_interface_name(node, if_key, ifc_name)
-            return sw_if_idx
-        else:
-            raise RuntimeError("Unable to create VXLAN interface on node {0}"
-                               .format(node))
+        cmd = u"vxlan_add_del_tunnel"
+        args = dict(
+            is_add=True,
+            instance=Constants.BITWISE_NON_ZERO,
+            src_address=IPAddress.create_ip_address_object(
+                ip_address(source_ip)
+            ),
+            dst_address=IPAddress.create_ip_address_object(
+                ip_address(destination_ip)
+            ),
+            mcast_sw_if_index=Constants.BITWISE_NON_ZERO,
+            encap_vrf_id=0,
+            decap_next_index=Constants.BITWISE_NON_ZERO,
+            vni=int(vni)
+        )
+        err_msg = f"Failed to create VXLAN tunnel interface " \
+            f"on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        if_key = Topology.add_new_port(node, u"vxlan_tunnel")
+        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
+        ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)
+        Topology.update_interface_name(node, if_key, ifc_name)
+
+        return sw_if_index
+
+    @staticmethod
+    def set_vxlan_bypass(node, interface=None):
+        """Add the 'ip4-vxlan-bypass' graph node for a given interface.
+
+        By adding the IPv4 vxlan-bypass graph node to an interface, the node
+        checks for and validate input vxlan packet and bypass ip4-lookup,
+        ip4-local, ip4-udp-lookup nodes to speedup vxlan packet forwarding.
+        This node will cause extra overhead to for non-vxlan packets which is
+        kept at a minimum.
+
+        :param node: Node where to set VXLAN bypass.
+        :param interface: Numeric index or name string of a specific interface.
+        :type node: dict
+        :type interface: int or str
+        :raises RuntimeError: if it failed to set VXLAN bypass on interface.
+        """
+        sw_if_index = InterfaceUtil.get_interface_index(node, interface)
+
+        cmd = u"sw_interface_set_vxlan_bypass"
+        args = dict(
+            is_ipv6=False,
+            sw_if_index=sw_if_index,
+            enable=True
+        )
+        err_msg = f"Failed to set VXLAN bypass on interface " \
+            f"on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_replies(err_msg)
 
     @staticmethod
     def vxlan_dump(node, interface=None):
@@ -724,70 +920,47 @@ class InterfaceUtil(object):
         :raises TypeError: if the data type of interface is neither basestring
             nor int.
         """
-        param = "sw_if_index"
-        if interface is None:
-            param = ''
-            sw_if_index = ''
-        elif isinstance(interface, basestring):
-            sw_if_index = Topology.get_interface_sw_index(node, interface)
-        elif isinstance(interface, int):
-            sw_if_index = interface
-        else:
-            raise TypeError("Wrong interface format {0}".format(interface))
-
-        with VatTerminal(node) as vat:
-            response = vat.vat_terminal_exec_cmd_from_template(
-                "vxlan_dump.vat", param=param, sw_if_index=sw_if_index)
-
-        if sw_if_index:
-            for vxlan in response[0]:
-                if vxlan["sw_if_index"] == sw_if_index:
-                    return vxlan
-            return {}
-        return response[0]
-
-    @staticmethod
-    def vhost_user_dump(node):
-        """Get vhost-user data for the given node.
-
-        :param node: VPP node to get interface data from.
-        :type node: dict
-        :returns: List of dictionaries with all vhost-user interfaces.
-        :rtype: list
-        """
-        with VatTerminal(node) as vat:
-            response = vat.vat_terminal_exec_cmd_from_template(
-                "vhost_user_dump.vat")
-
-        return response[0]
+        def process_vxlan_dump(vxlan_dump):
+            """Process vxlan dump.
+
+            :param vxlan_dump: Vxlan interface dump.
+            :type vxlan_dump: dict
+            :returns: Processed vxlan interface dump.
+            :rtype: dict
+            """
+            vxlan_dump[u"src_address"] = str(vxlan_dump[u"src_address"])
+            vxlan_dump[u"dst_address"] = str(vxlan_dump[u"dst_address"])
+            return vxlan_dump
 
-    @staticmethod
-    def tap_dump(node, name=None):
-        """Get all TAP interface data from the given node, or data about
-        a specific TAP interface.
-
-        :param node: VPP node to get data from.
-        :param name: Optional name of a specific TAP interface.
-        :type node: dict
-        :type name: str
-        :returns: Dictionary of information about a specific TAP interface, or
-            a List of dictionaries containing all TAP data for the given node.
-        :rtype: dict or list
-        """
-        with VatTerminal(node) as vat:
-            response = vat.vat_terminal_exec_cmd_from_template(
-                "tap_dump.vat")
-        if name is None:
-            return response[0]
+        if interface is not None:
+            sw_if_index = InterfaceUtil.get_interface_index(node, interface)
         else:
-            for item in response[0]:
-                if name == item['dev_name']:
-                    return item
-            return {}
+            sw_if_index = int(Constants.BITWISE_NON_ZERO)
+
+        cmd = u"vxlan_tunnel_dump"
+        args = dict(
+            sw_if_index=sw_if_index
+        )
+        err_msg = f"Failed to get VXLAN dump on host {node[u'host']}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)
+
+        data = list() if interface is None else dict()
+        for dump in details:
+            if interface is None:
+                data.append(process_vxlan_dump(dump))
+            elif dump[u"sw_if_index"] == sw_if_index:
+                data = process_vxlan_dump(dump)
+                break
+
+        logger.debug(f"VXLAN data:\n{data}")
+        return data
 
     @staticmethod
-    def create_subinterface(node, interface, sub_id, outer_vlan_id=None,
-                            inner_vlan_id=None, type_subif=None):
+    def create_subinterface(
+            node, interface, sub_id, outer_vlan_id=None, inner_vlan_id=None,
+            type_subif=None):
         """Create sub-interface on node. It is possible to set required
         sub-interface type and VLAN tag(s).
 
@@ -809,46 +982,44 @@ class InterfaceUtil(object):
         :rtype: tuple
         :raises RuntimeError: If it is not possible to create sub-interface.
         """
-
-        outer_vlan_id = 'outer_vlan_id {0}'.format(outer_vlan_id)\
-            if outer_vlan_id else ''
-
-        inner_vlan_id = 'inner_vlan_id {0}'.format(inner_vlan_id)\
-            if inner_vlan_id else ''
-
-        if type_subif is None:
-            type_subif = ''
-
-        if isinstance(interface, basestring):
-            iface_key = Topology.get_interface_by_name(node, interface)
-            sw_if_index = Topology.get_interface_sw_index(node, iface_key)
-        else:
-            sw_if_index = interface
-
-        output = VatExecutor.cmd_from_template(node, "create_sub_interface.vat",
-                                               sw_if_index=sw_if_index,
-                                               sub_id=sub_id,
-                                               outer_vlan_id=outer_vlan_id,
-                                               inner_vlan_id=inner_vlan_id,
-                                               type_subif=type_subif)
-
-        if output[0]["retval"] == 0:
-            sw_subif_idx = output[0]["sw_if_index"]
-            logger.trace('Created subinterface with index {}'
-                         .format(sw_subif_idx))
-            if_key = Topology.add_new_port(node, "subinterface")
-            Topology.update_interface_sw_if_index(node, if_key, sw_subif_idx)
-            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_subif_idx)
-            Topology.update_interface_name(node, if_key, ifc_name)
-        else:
-            raise RuntimeError('Unable to create sub-interface on node {}'
-                               .format(node['host']))
-
-        with VatTerminal(node, json_param=False) as vat:
-            vat.vat_terminal_exec_cmd('exec show interfaces')
-
-        name = '{}.{}'.format(interface, sub_id)
-        return name, sw_subif_idx
+        subif_types = type_subif.split()
+
+        flags = 0
+        if u"no_tags" in subif_types:
+            flags = flags | SubInterfaceFlags.SUB_IF_API_FLAG_NO_TAGS
+        if u"one_tag" in subif_types:
+            flags = flags | SubInterfaceFlags.SUB_IF_API_FLAG_ONE_TAG
+        if u"two_tags" in subif_types:
+            flags = flags | SubInterfaceFlags.SUB_IF_API_FLAG_TWO_TAGS
+        if u"dot1ad" in subif_types:
+            flags = flags | SubInterfaceFlags.SUB_IF_API_FLAG_DOT1AD
+        if u"exact_match" in subif_types:
+            flags = flags | SubInterfaceFlags.SUB_IF_API_FLAG_EXACT_MATCH
+        if u"default_sub" in subif_types:
+            flags = flags | SubInterfaceFlags.SUB_IF_API_FLAG_DEFAULT
+        if type_subif == u"default_sub":
+            flags = flags | SubInterfaceFlags.SUB_IF_API_FLAG_INNER_VLAN_ID_ANY\
+                    | SubInterfaceFlags.SUB_IF_API_FLAG_OUTER_VLAN_ID_ANY
+
+        cmd = u"create_subif"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            sub_id=int(sub_id),
+            sub_if_flags=flags.value if hasattr(flags, u"value")
+            else int(flags),
+            outer_vlan_id=int(outer_vlan_id) if outer_vlan_id else 0,
+            inner_vlan_id=int(inner_vlan_id) if inner_vlan_id else 0
+        )
+        err_msg = f"Failed to create sub-interface on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        if_key = Topology.add_new_port(node, u"subinterface")
+        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
+        ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)
+        Topology.update_interface_name(node, if_key, ifc_name)
+
+        return f"{interface}.{sub_id}", sw_if_index
 
     @staticmethod
     def create_gre_tunnel_interface(node, source_ip, destination_ip):
@@ -864,55 +1035,463 @@ class InterfaceUtil(object):
         :rtype: tuple
         :raises RuntimeError: If unable to create GRE tunnel interface.
         """
-        output = VatExecutor.cmd_from_template(node, "create_gre.vat",
-                                               src=source_ip,
-                                               dst=destination_ip)
-        output = output[0]
-
-        if output["retval"] == 0:
-            sw_if_idx = output["sw_if_index"]
-
-            vat_executor = VatExecutor()
-            vat_executor.execute_script_json_out("dump_interfaces.vat", node)
-            interface_dump_json = vat_executor.get_script_stdout()
-            name = VatJsonUtil.get_interface_name_from_json(
-                interface_dump_json, sw_if_idx)
+        cmd = u"gre_tunnel_add_del"
+        tunnel = dict(
+            type=0,
+            instance=Constants.BITWISE_NON_ZERO,
+            src=str(source_ip),
+            dst=str(destination_ip),
+            outer_fib_id=0,
+            session_id=0
+        )
+        args = dict(
+            is_add=1,
+            tunnel=tunnel
+        )
+        err_msg = f"Failed to create GRE tunnel interface " \
+            f"on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        if_key = Topology.add_new_port(node, u"gre_tunnel")
+        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
+        ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)
+        Topology.update_interface_name(node, if_key, ifc_name)
+
+        return ifc_name, sw_if_index
 
-            if_key = Topology.add_new_port(node, "gre_tunnel")
-            Topology.update_interface_sw_if_index(node, if_key, sw_if_idx)
-            Topology.update_interface_name(node, if_key, name)
+    @staticmethod
+    def create_gtpu_tunnel_interface(node, teid, source_ip, destination_ip):
+        """Create GTPU interface and return sw if index of created interface.
 
-            return name, sw_if_idx
-        else:
-            raise RuntimeError('Unable to create GRE tunnel on node {}.'
-                               .format(node))
+        :param node: Node where to create GTPU interface.
+        :param teid: GTPU Tunnel Endpoint Identifier.
+        :param source_ip: Source IP of a GTPU Tunnel End Point.
+        :param destination_ip: Destination IP of a GTPU Tunnel End Point.
+        :type node: dict
+        :type teid: int
+        :type source_ip: str
+        :type destination_ip: str
+        :returns: SW IF INDEX of created interface.
+        :rtype: int
+        :raises RuntimeError: if it is unable to create GTPU interface on the
+            node.
+        """
+        cmd = u"gtpu_add_del_tunnel"
+        args = dict(
+            is_add=True,
+            src_address=IPAddress.create_ip_address_object(
+                ip_address(source_ip)
+            ),
+            dst_address=IPAddress.create_ip_address_object(
+                ip_address(destination_ip)
+            ),
+            mcast_sw_if_index=Constants.BITWISE_NON_ZERO,
+            encap_vrf_id=0,
+            decap_next_index=2,
+            teid=teid
+        )
+        err_msg = f"Failed to create GTPU tunnel interface " \
+            f"on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        if_key = Topology.add_new_port(node, u"gtpu_tunnel")
+        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
+        ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)
+        Topology.update_interface_name(node, if_key, ifc_name)
+
+        return sw_if_index
 
     @staticmethod
-    def vpp_create_loopback(node):
+    def vpp_create_loopback(node, mac=None):
         """Create loopback interface on VPP node.
 
         :param node: Node to create loopback interface on.
+        :param mac: Optional MAC address for loopback interface.
         :type node: dict
+        :type mac: str
         :returns: SW interface index.
         :rtype: int
         :raises RuntimeError: If it is not possible to create loopback on the
             node.
         """
-        out = VatExecutor.cmd_from_template(node, "create_loopback.vat")
-        if out[0].get('retval') == 0:
-            sw_if_idx = out[0].get('sw_if_index')
-            if_key = Topology.add_new_port(node, "loopback")
-            Topology.update_interface_sw_if_index(node, if_key, sw_if_idx)
-            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_idx)
-            Topology.update_interface_name(node, if_key, ifc_name)
-            return sw_if_idx
+        cmd = u"create_loopback_instance"
+        args = dict(
+            mac_address=L2Util.mac_to_bin(mac) if mac else 0,
+            is_specified=False,
+            user_instance=0,
+        )
+        err_msg = f"Failed to create loopback interface on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        if_key = Topology.add_new_port(node, u"loopback")
+        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
+        ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)
+        Topology.update_interface_name(node, if_key, ifc_name)
+        if mac:
+            mac = InterfaceUtil.vpp_get_interface_mac(node, ifc_name)
+            Topology.update_interface_mac_address(node, if_key, mac)
+
+        return sw_if_index
+
+    @staticmethod
+    def vpp_create_bond_interface(
+            node, mode, load_balance=None, mac=None, gso=False):
+        """Create bond interface on VPP node.
+
+        :param node: DUT node from topology.
+        :param mode: Link bonding mode.
+        :param load_balance: Load balance (optional, valid for xor and lacp
+            modes, otherwise ignored). Default: None.
+        :param mac: MAC address to assign to the bond interface (optional).
+            Default: None.
+        :param gso: Enable GSO support (optional). Default: False.
+        :type node: dict
+        :type mode: str
+        :type load_balance: str
+        :type mac: str
+        :type gso: bool
+        :returns: Interface key (name) in topology.
+        :rtype: str
+        :raises RuntimeError: If it is not possible to create bond interface on
+            the node.
+        """
+        cmd = u"bond_create2"
+        args = dict(
+            id=int(Constants.BITWISE_NON_ZERO),
+            use_custom_mac=bool(mac is not None),
+            mac_address=L2Util.mac_to_bin(mac) if mac else None,
+            mode=getattr(
+                LinkBondMode,
+                f"BOND_API_MODE_{mode.replace(u'-', u'_').upper()}"
+            ).value,
+            lb=0 if load_balance is None else getattr(
+                LinkBondLoadBalanceAlgo,
+                f"BOND_API_LB_ALGO_{load_balance.upper()}"
+            ).value,
+            numa_only=False,
+            enable_gso=gso
+        )
+        err_msg = f"Failed to create bond interface on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        InterfaceUtil.add_eth_interface(
+            node, sw_if_index=sw_if_index, ifc_pfx=u"eth_bond"
+        )
+        if_key = Topology.get_interface_by_sw_index(node, sw_if_index)
+
+        return if_key
+
+    @staticmethod
+    def add_eth_interface(
+            node, ifc_name=None, sw_if_index=None, ifc_pfx=None,
+            host_if_key=None):
+        """Add ethernet interface to current topology.
+
+        :param node: DUT node from topology.
+        :param ifc_name: Name of the interface.
+        :param sw_if_index: SW interface index.
+        :param ifc_pfx: Interface key prefix.
+        :param host_if_key: Host interface key from topology file.
+        :type node: dict
+        :type ifc_name: str
+        :type sw_if_index: int
+        :type ifc_pfx: str
+        :type host_if_key: str
+        """
+        if_key = Topology.add_new_port(node, ifc_pfx)
+
+        if ifc_name and sw_if_index is None:
+            sw_if_index = InterfaceUtil.vpp_get_interface_sw_index(
+                node, ifc_name)
+        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
+        if sw_if_index and ifc_name is None:
+            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)
+        Topology.update_interface_name(node, if_key, ifc_name)
+        ifc_mac = InterfaceUtil.vpp_get_interface_mac(node, sw_if_index)
+        Topology.update_interface_mac_address(node, if_key, ifc_mac)
+        if host_if_key is not None:
+            Topology.set_interface_numa_node(
+                node, if_key, Topology.get_interface_numa_node(
+                    node, host_if_key
+                )
+            )
+            Topology.update_interface_pci_address(
+                node, if_key, Topology.get_interface_pci_addr(node, host_if_key)
+            )
+
+    @staticmethod
+    def vpp_create_avf_interface(
+            node, if_key, num_rx_queues=None, rxq_size=0, txq_size=0):
+        """Create AVF interface on VPP node.
+
+        :param node: DUT node from topology.
+        :param if_key: Interface key from topology file of interface
+            to be bound to i40evf driver.
+        :param num_rx_queues: Number of RX queues.
+        :param rxq_size: Size of RXQ (0 = Default API; 512 = Default VPP).
+        :param txq_size: Size of TXQ (0 = Default API; 512 = Default VPP).
+        :type node: dict
+        :type if_key: str
+        :type num_rx_queues: int
+        :type rxq_size: int
+        :type txq_size: int
+        :returns: AVF interface key (name) in topology.
+        :rtype: str
+        :raises RuntimeError: If it is not possible to create AVF interface on
+            the node.
+        """
+        PapiSocketExecutor.run_cli_cmd(
+            node, u"set logging class avf level debug"
+        )
+
+        cmd = u"avf_create"
+        vf_pci_addr = Topology.get_interface_pci_addr(node, if_key)
+        args = dict(
+            pci_addr=InterfaceUtil.pci_to_int(vf_pci_addr),
+            enable_elog=0,
+            rxq_num=int(num_rx_queues) if num_rx_queues else 0,
+            rxq_size=rxq_size,
+            txq_size=txq_size
+        )
+        err_msg = f"Failed to create AVF interface on host {node[u'host']}"
+
+        # FIXME: Remove once the fw/driver is upgraded.
+        for _ in range(10):
+            with PapiSocketExecutor(node) as papi_exec:
+                try:
+                    sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(
+                        err_msg
+                    )
+                    break
+                except AssertionError:
+                    logger.error(err_msg)
         else:
-            raise RuntimeError('Create loopback failed on node "{}"'
-                               .format(node['host']))
+            raise AssertionError(err_msg)
+
+        InterfaceUtil.add_eth_interface(
+            node, sw_if_index=sw_if_index, ifc_pfx=u"eth_avf",
+            host_if_key=if_key
+        )
+
+        return Topology.get_interface_by_sw_index(node, sw_if_index)
+
+    @staticmethod
+    def vpp_create_af_xdp_interface(
+            node, if_key, num_rx_queues=None, rxq_size=0, txq_size=0,
+            mode=u"auto"):
+        """Create AF_XDP interface on VPP node.
+
+        :param node: DUT node from topology.
+        :param if_key: Physical interface key from topology file of interface
+            to be bound to compatible driver.
+        :param num_rx_queues: Number of RX queues. (Optional, Default: none)
+        :param rxq_size: Size of RXQ (0 = Default API; 512 = Default VPP).
+        :param txq_size: Size of TXQ (0 = Default API; 512 = Default VPP).
+        :param mode: AF_XDP interface mode. (Optional, Default: auto).
+        :type node: dict
+        :type if_key: str
+        :type num_rx_queues: int
+        :type rxq_size: int
+        :type txq_size: int
+        :type mode: str
+        :returns: Interface key (name) in topology file.
+        :rtype: str
+        :raises RuntimeError: If it is not possible to create AF_XDP interface
+            on the node.
+        """
+        PapiSocketExecutor.run_cli_cmd(
+            node, u"set logging class af_xdp level debug"
+        )
+
+        cmd = u"af_xdp_create"
+        pci_addr = Topology.get_interface_pci_addr(node, if_key)
+        args = dict(
+            name=InterfaceUtil.pci_to_eth(node, pci_addr),
+            host_if=InterfaceUtil.pci_to_eth(node, pci_addr),
+            rxq_num=int(num_rx_queues) if num_rx_queues else 0,
+            rxq_size=rxq_size,
+            txq_size=txq_size,
+            mode=getattr(AfXdpMode, f"AF_XDP_API_MODE_{mode.upper()}").value
+        )
+        err_msg = f"Failed to create AF_XDP interface on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        InterfaceUtil.vpp_set_interface_mac(
+            node, sw_if_index, Topology.get_interface_mac(node, if_key)
+        )
+        InterfaceUtil.add_eth_interface(
+            node, sw_if_index=sw_if_index, ifc_pfx=u"eth_af_xdp",
+            host_if_key=if_key
+        )
+
+        return Topology.get_interface_by_sw_index(node, sw_if_index)
+
+    @staticmethod
+    def vpp_create_rdma_interface(
+            node, if_key, num_rx_queues=None, rxq_size=0, txq_size=0,
+            mode=u"auto"):
+        """Create RDMA interface on VPP node.
+
+        :param node: DUT node from topology.
+        :param if_key: Physical interface key from topology file of interface
+            to be bound to rdma-core driver.
+        :param num_rx_queues: Number of RX queues.
+        :param rxq_size: Size of RXQ (0 = Default API; 512 = Default VPP).
+        :param txq_size: Size of TXQ (0 = Default API; 512 = Default VPP).
+        :param mode: RDMA interface mode - auto/ibv/dv.
+        :type node: dict
+        :type if_key: str
+        :type num_rx_queues: int
+        :type rxq_size: int
+        :type txq_size: int
+        :type mode: str
+        :returns: Interface key (name) in topology file.
+        :rtype: str
+        :raises RuntimeError: If it is not possible to create RDMA interface on
+            the node.
+        """
+        PapiSocketExecutor.run_cli_cmd(
+            node, u"set logging class rdma level debug"
+        )
+
+        cmd = u"rdma_create_v2"
+        pci_addr = Topology.get_interface_pci_addr(node, if_key)
+        args = dict(
+            name=InterfaceUtil.pci_to_eth(node, pci_addr),
+            host_if=InterfaceUtil.pci_to_eth(node, pci_addr),
+            rxq_num=int(num_rx_queues) if num_rx_queues else 0,
+            rxq_size=rxq_size,
+            txq_size=txq_size,
+            mode=getattr(RdmaMode, f"RDMA_API_MODE_{mode.upper()}").value,
+            # Note: Set True for non-jumbo packets.
+            no_multi_seg=False,
+            max_pktlen=0,
+        )
+        err_msg = f"Failed to create RDMA interface on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
+
+        InterfaceUtil.vpp_set_interface_mac(
+            node, sw_if_index, Topology.get_interface_mac(node, if_key)
+        )
+        InterfaceUtil.add_eth_interface(
+            node, sw_if_index=sw_if_index, ifc_pfx=u"eth_rdma",
+            host_if_key=if_key
+        )
+
+        return Topology.get_interface_by_sw_index(node, sw_if_index)
 
     @staticmethod
-    def vpp_enable_input_acl_interface(node, interface, ip_version,
-                                       table_index):
+    def vpp_add_bond_member(node, interface, bond_if):
+        """Add member interface to bond interface on VPP node.
+
+        :param node: DUT node from topology.
+        :param interface: Physical interface key from topology file.
+        :param bond_if: Load balance
+        :type node: dict
+        :type interface: str
+        :type bond_if: str
+        :raises RuntimeError: If it is not possible to add member to bond
+            interface on the node.
+        """
+        cmd = u"bond_add_member"
+        args = dict(
+            sw_if_index=Topology.get_interface_sw_index(node, interface),
+            bond_sw_if_index=Topology.get_interface_sw_index(node, bond_if),
+            is_passive=False,
+            is_long_timeout=False
+        )
+        err_msg = f"Failed to add member {interface} to bond interface " \
+            f"{bond_if} on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_show_bond_data_on_node(node, verbose=False):
+        """Show (detailed) bond information on VPP node.
+
+        :param node: DUT node from topology.
+        :param verbose: If detailed information is required or not.
+        :type node: dict
+        :type verbose: bool
+        """
+        cmd = u"sw_bond_interface_dump"
+        err_msg = f"Failed to get bond interface dump on host {node[u'host']}"
+
+        data = f"Bond data on node {node[u'host']}:\n"
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd).get_details(err_msg)
+
+        for bond in details:
+            data += f"{bond[u'interface_name']}\n"
+            data += u"  mode: {m}\n".format(
+                m=bond[u"mode"].name.replace(u"BOND_API_MODE_", u"").lower()
+            )
+            data += u"  load balance: {lb}\n".format(
+                lb=bond[u"lb"].name.replace(u"BOND_API_LB_ALGO_", u"").lower()
+            )
+            data += f"  number of active members: {bond[u'active_members']}\n"
+            if verbose:
+                member_data = InterfaceUtil.vpp_bond_member_dump(
+                    node, Topology.get_interface_by_sw_index(
+                        node, bond[u"sw_if_index"]
+                    )
+                )
+                for member in member_data:
+                    if not member[u"is_passive"]:
+                        data += f"    {member[u'interface_name']}\n"
+            data += f"  number of members: {bond[u'members']}\n"
+            if verbose:
+                for member in member_data:
+                    data += f"    {member[u'interface_name']}\n"
+            data += f"  interface id: {bond[u'id']}\n"
+            data += f"  sw_if_index: {bond[u'sw_if_index']}\n"
+        logger.info(data)
+
+    @staticmethod
+    def vpp_bond_member_dump(node, interface):
+        """Get bond interface slave(s) data on VPP node.
+
+        :param node: DUT node from topology.
+        :param interface: Physical interface key from topology file.
+        :type node: dict
+        :type interface: str
+        :returns: Bond slave interface data.
+        :rtype: dict
+        """
+        cmd = u"sw_member_interface_dump"
+        args = dict(
+            sw_if_index=Topology.get_interface_sw_index(node, interface)
+        )
+        err_msg = f"Failed to get slave dump on host {node[u'host']}"
+
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)
+
+        logger.debug(f"Member data:\n{details}")
+        return details
+
+    @staticmethod
+    def vpp_show_bond_data_on_all_nodes(nodes, verbose=False):
+        """Show (detailed) bond information on all VPP nodes in DICT__nodes.
+
+        :param nodes: Nodes in the topology.
+        :param verbose: If detailed information is required or not.
+        :type nodes: dict
+        :type verbose: bool
+        """
+        for node_data in nodes.values():
+            if node_data[u"type"] == NodeType.DUT:
+                InterfaceUtil.vpp_show_bond_data_on_node(node_data, verbose)
+
+    @staticmethod
+    def vpp_enable_input_acl_interface(
+            node, interface, ip_version, table_index):
         """Enable input acl on interface.
 
         :param node: VPP node to setup interface for input acl.
@@ -924,21 +1503,26 @@ class InterfaceUtil(object):
         :type ip_version: str
         :type table_index: int
         """
-        if isinstance(interface, basestring):
-            sw_if_index = Topology.get_interface_sw_index(node, interface)
-        else:
-            sw_if_index = interface
-
-        with VatTerminal(node) as vat:
-            vat.vat_terminal_exec_cmd_from_template("input_acl_int.vat",
-                                                    sw_if_index=sw_if_index,
-                                                    ip_version=ip_version,
-                                                    table_index=table_index)
+        cmd = u"input_acl_set_interface"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            ip4_table_index=table_index if ip_version == u"ip4"
+            else Constants.BITWISE_NON_ZERO,
+            ip6_table_index=table_index if ip_version == u"ip6"
+            else Constants.BITWISE_NON_ZERO,
+            l2_table_index=table_index if ip_version == u"l2"
+            else Constants.BITWISE_NON_ZERO,
+            is_add=1)
+        err_msg = f"Failed to enable input acl on interface {interface}"
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
 
     @staticmethod
     def get_interface_classify_table(node, interface):
         """Get name of classify table for the given interface.
 
+        TODO: Move to Classify.py.
+
         :param node: VPP node to get data from.
         :param interface: Name or sw_if_index of a specific interface.
         :type node: dict
@@ -946,44 +1530,27 @@ class InterfaceUtil(object):
         :returns: Classify table name.
         :rtype: str
         """
-        if isinstance(interface, basestring):
+        if isinstance(interface, str):
             sw_if_index = InterfaceUtil.get_sw_if_index(node, interface)
         else:
             sw_if_index = interface
 
-        with VatTerminal(node) as vat:
-            data = vat.vat_terminal_exec_cmd_from_template(
-                "classify_interface_table.vat",
-                sw_if_index=sw_if_index)
-        return data[0]
-
-    @staticmethod
-    def get_interface_vrf_table(node, interface):
-        """Get vrf ID for the given interface.
-
-        :param node: VPP node.
-        :param interface: Name or sw_if_index of a specific interface.
-        :type node: dict
-        :type interface: str or int
-        :returns: vrf ID of the specified interface.
-        :rtype: int
-        """
-
-        if isinstance(interface, basestring):
-            sw_if_index = InterfaceUtil.get_sw_if_index(node, interface)
-        else:
-            sw_if_index = interface
+        cmd = u"classify_table_by_interface"
+        args = dict(
+            sw_if_index=sw_if_index
+        )
+        err_msg = f"Failed to get classify table name by interface {interface}"
+        with PapiSocketExecutor(node) as papi_exec:
+            reply = papi_exec.add(cmd, **args).get_reply(err_msg)
 
-        with VatTerminal(node) as vat:
-            data = vat.vat_terminal_exec_cmd_from_template(
-                "interface_vrf_dump.vat",
-                sw_if_index=sw_if_index)
-        return data[0]["vrf_id"]
+        return reply
 
     @staticmethod
     def get_sw_if_index(node, interface_name):
         """Get sw_if_index for the given interface from actual interface dump.
 
+        FIXME: Delete and redirect callers to vpp_get_interface_sw_index.
+
         :param node: VPP node to get interface data from.
         :param interface_name: Name of the specific interface.
         :type node: dict
@@ -991,15 +1558,10 @@ class InterfaceUtil(object):
         :returns: sw_if_index of the given interface.
         :rtype: str
         """
-
-        with VatTerminal(node) as vat:
-            if_data = vat.vat_terminal_exec_cmd_from_template(
-                "interface_dump.vat")
-        for interface in if_data[0]:
-            if interface["interface_name"] == interface_name:
-                return interface["sw_if_index"]
-
-        return None
+        interface_data = InterfaceUtil.vpp_get_interface_data(
+            node, interface=interface_name
+        )
+        return interface_data.get(u"sw_if_index")
 
     @staticmethod
     def vxlan_gpe_dump(node, interface_name=None):
@@ -1015,98 +1577,437 @@ class InterfaceUtil(object):
             interfaces.
         :rtype: dict or list
         """
+        def process_vxlan_gpe_dump(vxlan_dump):
+            """Process vxlan_gpe dump.
+
+            :param vxlan_dump: Vxlan_gpe nterface dump.
+            :type vxlan_dump: dict
+            :returns: Processed vxlan_gpe interface dump.
+            :rtype: dict
+            """
+            if vxlan_dump[u"is_ipv6"]:
+                vxlan_dump[u"local"] = ip_address(vxlan_dump[u"local"])
+                vxlan_dump[u"remote"] = ip_address(vxlan_dump[u"remote"])
+            else:
+                vxlan_dump[u"local"] = ip_address(vxlan_dump[u"local"][0:4])
+                vxlan_dump[u"remote"] = ip_address(vxlan_dump[u"remote"][0:4])
+            return vxlan_dump
+
+        if interface_name is not None:
+            sw_if_index = InterfaceUtil.get_interface_index(
+                node, interface_name
+            )
+        else:
+            sw_if_index = int(Constants.BITWISE_NON_ZERO)
+
+        cmd = u"vxlan_gpe_tunnel_dump"
+        args = dict(
+            sw_if_index=sw_if_index
+        )
+        err_msg = f"Failed to get VXLAN-GPE dump on host {node[u'host']}"
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)
+
+        data = list() if interface_name is None else dict()
+        for dump in details:
+            if interface_name is None:
+                data.append(process_vxlan_gpe_dump(dump))
+            elif dump[u"sw_if_index"] == sw_if_index:
+                data = process_vxlan_gpe_dump(dump)
+                break
+
+        logger.debug(f"VXLAN-GPE data:\n{data}")
+        return data
 
-        with VatTerminal(node) as vat:
-            vxlan_gpe_data = vat.vat_terminal_exec_cmd_from_template(
-                "vxlan_gpe_dump.vat")
-
-        if interface_name:
-            sw_if_index = InterfaceUtil.get_sw_if_index(node, interface_name)
-            if sw_if_index:
-                for vxlan_gpe in vxlan_gpe_data[0]:
-                    if vxlan_gpe["sw_if_index"] == sw_if_index:
-                        return vxlan_gpe
-            return {}
+    @staticmethod
+    def assign_interface_to_fib_table(node, interface, table_id, ipv6=False):
+        """Assign VPP interface to specific VRF/FIB table.
 
-        return vxlan_gpe_data[0]
+        :param node: VPP node where the FIB and interface are located.
+        :param interface: Interface to be assigned to FIB.
+        :param table_id: VRF table ID.
+        :param ipv6: Assign to IPv6 table. Default False.
+        :type node: dict
+        :type interface: str or int
+        :type table_id: int
+        :type ipv6: bool
+        """
+        cmd = u"sw_interface_set_table"
+        args = dict(
+            sw_if_index=InterfaceUtil.get_interface_index(node, interface),
+            is_ipv6=ipv6,
+            vrf_id=int(table_id)
+        )
+        err_msg = f"Failed to assign interface {interface} to FIB table"
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
 
     @staticmethod
-    def vpp_proxy_arp_interface_enable(node, interface):
-        """Enable proxy ARP on interface.
+    def set_linux_interface_mac(
+            node, interface, mac, namespace=None, vf_id=None):
+        """Set MAC address for interface in linux.
 
-        :param node: VPP node to enable proxy ARP on interface.
-        :param interface: Interface to enable proxy ARP.
+        :param node: Node where to execute command.
+        :param interface: Interface in namespace.
+        :param mac: MAC to be assigned to interface.
+        :param namespace: Execute command in namespace. Optional
+        :param vf_id: Virtual Function id. Optional
         :type node: dict
-        :type interface: str or int
+        :type interface: str
+        :type mac: str
+        :type namespace: str
+        :type vf_id: int
         """
-        if isinstance(interface, basestring):
-            sw_if_index = InterfaceUtil.get_sw_if_index(node, interface)
-        else:
-            sw_if_index = interface
+        mac_str = f"vf {vf_id} mac {mac}" if vf_id is not None \
+            else f"address {mac}"
+        ns_str = f"ip netns exec {namespace}" if namespace else u""
 
-        with VatTerminal(node) as vat:
-            vat.vat_terminal_exec_cmd_from_template(
-                "proxy_arp_intfc_enable.vat",
-                sw_if_index=sw_if_index)
+        cmd = f"{ns_str} ip link set {interface} {mac_str}"
+        exec_cmd_no_error(node, cmd, sudo=True)
 
     @staticmethod
-    def vpp_ip_source_check_setup(node, interface):
-        """Setup Reverse Path Forwarding source check on interface.
+    def set_linux_interface_promisc(
+            node, interface, namespace=None, vf_id=None, state=u"on"):
+        """Set promisc state for interface in linux.
 
-        :param node: Node to setup RPF source check.
-        :param interface: Interface name to setup RPF source check.
+        :param node: Node where to execute command.
+        :param interface: Interface in namespace.
+        :param namespace: Exec command in namespace. (Optional, Default: None)
+        :param vf_id: Virtual Function id. (Optional, Default: None)
+        :param state: State of feature. (Optional, Default: on)
         :type node: dict
         :type interface: str
+        :type namespace: str
+        :type vf_id: int
+        :type state: str
         """
-        with VatTerminal(node) as vat:
-            vat.vat_terminal_exec_cmd_from_template("ip_source_check.vat",
-                                                    interface_name=interface)
+        promisc_str = f"vf {vf_id} promisc {state}" if vf_id is not None \
+            else f"promisc {state}"
+        ns_str = f"ip netns exec {namespace}" if namespace else u""
+
+        cmd = f"{ns_str} ip link set dev {interface} {promisc_str}"
+        exec_cmd_no_error(node, cmd, sudo=True)
 
     @staticmethod
-    def assign_interface_to_fib_table(node, interface, table_id, ipv6=False):
-        """Assign VPP interface to specific VRF/FIB table.
+    def set_linux_interface_trust_on(
+            node, interface, namespace=None, vf_id=None):
+        """Set trust on (promisc) for interface in linux.
 
-        :param node: VPP node where the FIB and interface are located.
-        :param interface: Interface to be assigned to FIB.
-        :param table_id: VRF table ID.
-        :param ipv6: Assign to IPv6 table. Default False.
+        :param node: Node where to execute command.
+        :param interface: Interface in namespace.
+        :param namespace: Execute command in namespace. Optional
+        :param vf_id: Virtual Function id. Optional
         :type node: dict
-        :type interface: str or int
-        :type table_id: int
-        :type ipv6: bool
+        :type interface: str
+        :type namespace: str
+        :type vf_id: int
         """
-        if isinstance(interface, basestring):
-            sw_if_index = Topology.get_interface_sw_index(node, interface)
-        else:
-            sw_if_index = interface
+        trust_str = f"vf {vf_id} trust on" if vf_id is not None else u"trust on"
+        ns_str = f"ip netns exec {namespace}" if namespace else u""
 
-        ipv6 = 'ipv6' if ipv6 else ''
+        cmd = f"{ns_str} ip link set dev {interface} {trust_str}"
+        exec_cmd_no_error(node, cmd, sudo=True)
 
-        with VatTerminal(node) as vat:
-            ret = vat.vat_terminal_exec_cmd_from_template(
-                "set_fib_to_interface.vat",
-                sw_index=sw_if_index, vrf=table_id, ipv6=ipv6)
+    @staticmethod
+    def set_linux_interface_spoof_off(
+            node, interface, namespace=None, vf_id=None):
+        """Set spoof off for interface in linux.
 
-        if ret[0]["retval"] != 0:
-            raise RuntimeError('Unable to assign interface to FIB node {}.'
-                               .format(node))
+        :param node: Node where to execute command.
+        :param interface: Interface in namespace.
+        :param namespace: Execute command in namespace. Optional
+        :param vf_id: Virtual Function id. Optional
+        :type node: dict
+        :type interface: str
+        :type namespace: str
+        :type vf_id: int
+        """
+        spoof_str = f"vf {vf_id} spoof off" if vf_id is not None \
+            else u"spoof off"
+        ns_str = f"ip netns exec {namespace}" if namespace else u""
+
+        cmd = f"{ns_str} ip link set dev {interface} {spoof_str}"
+        exec_cmd_no_error(node, cmd, sudo=True)
 
     @staticmethod
-    def set_linux_interface_mac(node, interface, mac, namespace=None):
-        """Set MAC address for interface in linux.
+    def set_linux_interface_state(
+            node, interface, namespace=None, state=u"up"):
+        """Set operational state for interface in linux.
 
         :param node: Node where to execute command.
         :param interface: Interface in namespace.
-        :param mac: MAC to be assigned to interface.
         :param namespace: Execute command in namespace. Optional
+        :param state: Up/Down.
         :type node: dict
         :type interface: str
-        :type mac: str
         :type namespace: str
+        :type state: str
         """
-        if namespace is not None:
-            cmd = 'ip netns exec {} ip link set {} address {}'.format(
-                namespace, interface, mac)
-        else:
-            cmd = 'ip link set {} address {}'.format(interface, mac)
+        ns_str = f"ip netns exec {namespace}" if namespace else u""
+
+        cmd = f"{ns_str} ip link set dev {interface} {state}"
         exec_cmd_no_error(node, cmd, sudo=True)
+
+    @staticmethod
+    def init_interface(node, ifc_key, driver, numvfs=0, osi_layer=u"L2"):
+        """Init PCI device. Check driver compatibility and bind to proper
+        drivers. Optionally create NIC VFs.
+
+        :param node: DUT node.
+        :param ifc_key: Interface key from topology file.
+        :param driver: Base driver to use.
+        :param numvfs: Number of VIFs to initialize, 0 - disable the VIFs.
+        :param osi_layer: OSI Layer type to initialize TG with.
+            Default value "L2" sets linux interface spoof off.
+        :type node: dict
+        :type ifc_key: str
+        :type driver: str
+        :type numvfs: int
+        :type osi_layer: str
+        :returns: Virtual Function topology interface keys.
+        :rtype: list
+        :raises RuntimeError: If a reason preventing initialization is found.
+        """
+        kernel_driver = Topology.get_interface_driver(node, ifc_key)
+        vf_keys = []
+        if driver == u"avf":
+            if kernel_driver not in (
+                    u"ice", u"iavf", u"i40e", u"i40evf"):
+                raise RuntimeError(
+                    f"AVF needs ice or i40e compatible driver, not "
+                    f"{kernel_driver} at node {node[u'host']} ifc {ifc_key}"
+                )
+            vf_keys = InterfaceUtil.init_generic_interface(
+                node, ifc_key, numvfs=numvfs, osi_layer=osi_layer
+            )
+        elif driver == u"af_xdp":
+            if kernel_driver not in (
+                    u"ice", u"iavf", u"i40e", u"i40evf", u"mlx5_core",
+                    u"ixgbe"):
+                raise RuntimeError(
+                    f"AF_XDP needs ice/i40e/rdma/ixgbe compatible driver, not "
+                    f"{kernel_driver} at node {node[u'host']} ifc {ifc_key}"
+                )
+            vf_keys = InterfaceUtil.init_generic_interface(
+                node, ifc_key, numvfs=numvfs, osi_layer=osi_layer
+            )
+        elif driver == u"rdma-core":
+            vf_keys = InterfaceUtil.init_generic_interface(
+                node, ifc_key, numvfs=numvfs, osi_layer=osi_layer
+            )
+        return vf_keys
+
+    @staticmethod
+    def init_generic_interface(node, ifc_key, numvfs=0, osi_layer=u"L2"):
+        """Init PCI device. Bind to proper drivers. Optionally create NIC VFs.
+
+        :param node: DUT node.
+        :param ifc_key: Interface key from topology file.
+        :param numvfs: Number of VIFs to initialize, 0 - disable the VIFs.
+        :param osi_layer: OSI Layer type to initialize TG with.
+            Default value "L2" sets linux interface spoof off.
+        :type node: dict
+        :type ifc_key: str
+        :type numvfs: int
+        :type osi_layer: str
+        :returns: Virtual Function topology interface keys.
+        :rtype: list
+        :raises RuntimeError: If a reason preventing initialization is found.
+        """
+        # Read PCI address and driver.
+        pf_pci_addr = Topology.get_interface_pci_addr(node, ifc_key)
+        pf_mac_addr = Topology.get_interface_mac(node, ifc_key).split(":")
+        uio_driver = Topology.get_uio_driver(node)
+        kernel_driver = Topology.get_interface_driver(node, ifc_key)
+        current_driver = DUTSetup.get_pci_dev_driver(
+            node, pf_pci_addr.replace(u":", r"\:"))
+        pf_dev = f"`basename /sys/bus/pci/devices/{pf_pci_addr}/net/*`"
+
+        VPPUtil.stop_vpp_service(node)
+        if current_driver != kernel_driver:
+            # PCI device must be re-bound to kernel driver before creating VFs.
+            DUTSetup.verify_kernel_module(node, kernel_driver, force_load=True)
+            # Stop VPP to prevent deadlock.
+            # Unbind from current driver.
+            DUTSetup.pci_driver_unbind(node, pf_pci_addr)
+            # Bind to kernel driver.
+            DUTSetup.pci_driver_bind(node, pf_pci_addr, kernel_driver)
+
+        # Initialize PCI VFs.
+        DUTSetup.set_sriov_numvfs(node, pf_pci_addr, numvfs)
+
+        if not numvfs:
+            if osi_layer == u"L2":
+                InterfaceUtil.set_linux_interface_promisc(node, pf_dev)
+
+        vf_ifc_keys = []
+        # Set MAC address and bind each virtual function to uio driver.
+        for vf_id in range(numvfs):
+            vf_mac_addr = u":".join(
+                [pf_mac_addr[0], pf_mac_addr[2], pf_mac_addr[3], pf_mac_addr[4],
+                 pf_mac_addr[5], f"{vf_id:02x}"
+                 ]
+            )
+
+            InterfaceUtil.set_linux_interface_trust_on(
+                node, pf_dev, vf_id=vf_id
+            )
+            if osi_layer == u"L2":
+                InterfaceUtil.set_linux_interface_spoof_off(
+                    node, pf_dev, vf_id=vf_id
+                )
+            InterfaceUtil.set_linux_interface_mac(
+                node, pf_dev, vf_mac_addr, vf_id=vf_id
+            )
+            InterfaceUtil.set_linux_interface_state(
+                node, pf_dev, state=u"up"
+            )
+
+            DUTSetup.pci_vf_driver_unbind(node, pf_pci_addr, vf_id)
+            DUTSetup.pci_vf_driver_bind(node, pf_pci_addr, vf_id, uio_driver)
+
+            # Add newly created ports into topology file
+            vf_ifc_name = f"{ifc_key}_vif"
+            vf_pci_addr = DUTSetup.get_virtfn_pci_addr(node, pf_pci_addr, vf_id)
+            vf_ifc_key = Topology.add_new_port(node, vf_ifc_name)
+            Topology.update_interface_name(
+                node, vf_ifc_key, vf_ifc_name+str(vf_id+1)
+            )
+            Topology.update_interface_mac_address(node, vf_ifc_key, vf_mac_addr)
+            Topology.update_interface_pci_address(node, vf_ifc_key, vf_pci_addr)
+            Topology.set_interface_numa_node(
+                node, vf_ifc_key, Topology.get_interface_numa_node(
+                    node, ifc_key
+                )
+            )
+            vf_ifc_keys.append(vf_ifc_key)
+
+        return vf_ifc_keys
+
+    @staticmethod
+    def vpp_sw_interface_rx_placement_dump(node):
+        """Dump VPP interface RX placement on node.
+
+        :param node: Node to run command on.
+        :type node: dict
+        :returns: Thread mapping information as a list of dictionaries.
+        :rtype: list
+        """
+        cmd = u"sw_interface_rx_placement_dump"
+        err_msg = f"Failed to run '{cmd}' PAPI command on host {node[u'host']}!"
+        with PapiSocketExecutor(node) as papi_exec:
+            for ifc in node[u"interfaces"].values():
+                if ifc[u"vpp_sw_index"] is not None:
+                    papi_exec.add(cmd, sw_if_index=ifc[u"vpp_sw_index"])
+            details = papi_exec.get_details(err_msg)
+        return sorted(details, key=lambda k: k[u"sw_if_index"])
+
+    @staticmethod
+    def vpp_sw_interface_rx_placement_dump_on_all_duts(nodes):
+        """Dump VPP interface RX placement on all given nodes.
+
+        :param nodes: Nodes to run command on.
+        :type nodes: dict
+        :returns: Thread mapping information as a list of dictionaries.
+        :rtype: list
+        """
+        for node in nodes.values():
+            if node[u"type"] == NodeType.DUT:
+                InterfaceUtil.vpp_sw_interface_rx_placement_dump(node)
+
+    @staticmethod
+    def vpp_sw_interface_set_rx_placement(
+            node, sw_if_index, queue_id, worker_id):
+        """Set interface RX placement to worker on node.
+
+        :param node: Node to run command on.
+        :param sw_if_index: VPP SW interface index.
+        :param queue_id: VPP interface queue ID.
+        :param worker_id: VPP worker ID (indexing from 0).
+        :type node: dict
+        :type sw_if_index: int
+        :type queue_id: int
+        :type worker_id: int
+        :raises RuntimeError: If failed to run command on host or if no API
+            reply received.
+        """
+        cmd = u"sw_interface_set_rx_placement"
+        err_msg = f"Failed to set interface RX placement to worker " \
+            f"on host {node[u'host']}!"
+        args = dict(
+            sw_if_index=sw_if_index,
+            queue_id=queue_id,
+            worker_id=worker_id,
+            is_main=False
+        )
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)
+
+    @staticmethod
+    def vpp_round_robin_rx_placement(
+            node, prefix, workers=None):
+        """Set Round Robin interface RX placement on all worker threads
+        on node.
+
+        If specified, workers limits the number of physical cores used
+        for data plane I/O work. Other cores are presumed to do something else,
+        e.g. asynchronous crypto processing.
+        None means all workers are used for data plane work.
+
+        :param node: Topology nodes.
+        :param prefix: Interface name prefix.
+        :param workers: Comma separated worker index numbers intended for
+            dataplane work.
+        :type node: dict
+        :type prefix: str
+        :type workers: str
+        """
+        thread_data = VPPUtil.vpp_show_threads(node)
+        worker_cnt = len(thread_data) - 1
+        if not worker_cnt:
+            return None
+        worker_ids = list()
+        if workers:
+            for item in thread_data:
+                if str(item.cpu_id) in workers.split(u","):
+                    worker_ids.append(item.id)
+        else:
+            for item in thread_data:
+                if u"vpp_main" not in item.name:
+                    worker_ids.append(item.id)
+
+        worker_idx = 0
+        for placement in InterfaceUtil.vpp_sw_interface_rx_placement_dump(node):
+            for interface in node[u"interfaces"].values():
+                if placement[u"sw_if_index"] == interface[u"vpp_sw_index"] \
+                    and prefix in interface[u"name"]:
+                    InterfaceUtil.vpp_sw_interface_set_rx_placement(
+                        node, placement[u"sw_if_index"], placement[u"queue_id"],
+                        worker_ids[worker_idx % len(worker_ids)] - 1
+                    )
+                    worker_idx += 1
+
+    @staticmethod
+    def vpp_round_robin_rx_placement_on_all_duts(
+            nodes, prefix, workers=None):
+        """Set Round Robin interface RX placement on worker threads
+        on all DUTs.
+
+        If specified, workers limits the number of physical cores used
+        for data plane I/O work. Other cores are presumed to do something else,
+        e.g. asynchronous crypto processing.
+        None means all cores are used for data plane work.
+
+        :param nodes: Topology nodes.
+        :param prefix: Interface name prefix.
+        :param workers: Comma separated worker index numbers intended for
+            dataplane work.
+        :type nodes: dict
+        :type prefix: str
+        :type workers: str
+        """
+        for node in nodes.values():
+            if node[u"type"] == NodeType.DUT:
+                InterfaceUtil.vpp_round_robin_rx_placement(
+                    node, prefix, workers
+                )