Update of VPP_STABLE_VER files + quick fix for gre create tunnel
[csit.git] / resources / libraries / python / InterfaceUtil.py
index 7fc7f85..3f26809 100644 (file)
@@ -1,4 +1,4 @@
-# Copyright (c) 2018 Cisco and/or its affiliates.
+# Copyright (c) 2019 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 socket import AF_INET, AF_INET6, inet_ntop, inet_pton
+from socket import error as inet_error
 from time import time, sleep
 
 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.Constants import Constants
+from resources.libraries.python.CpuUtils import CpuUtils
 from resources.libraries.python.DUTSetup import DUTSetup
-from resources.libraries.python.ssh import exec_cmd_no_error
+from resources.libraries.python.PapiExecutor import PapiExecutor
+from resources.libraries.python.IPUtil import convert_ipv4_netmask_prefix
+from resources.libraries.python.IPUtil import IPUtil
+from resources.libraries.python.PapiExecutor import PapiExecutor
+from resources.libraries.python.parsers.JsonParser import JsonParser
+from resources.libraries.python.ssh import SSH, 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.VPPUtil import VPPUtil
-from resources.libraries.python.parsers.JsonParser import JsonParser
-from resources.libraries.python.CpuUtils import CpuUtils
+
 
 class InterfaceUtil(object):
     """General utilities for managing interfaces"""
@@ -519,7 +525,7 @@ class InterfaceUtil(object):
                 InterfaceUtil.update_nic_interface_names(node)
 
     @staticmethod
-    def update_tg_interface_data_on_node(node):
+    def update_tg_interface_data_on_node(node, skip_tg_udev=False):
         """Update interface name for TG/linux node in DICT__nodes.
 
         .. note::
@@ -530,10 +536,10 @@ 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.
+        :param skip_tg_udev: Skip udev rename on TG node.
         :type node: dict
+        :type skip_tg_udev: bool
         :raises RuntimeError: If getting of interface name and MAC fails.
         """
         # First setup interface driver specified in yaml file
@@ -558,7 +564,8 @@ class InterfaceUtil(object):
             interface['name'] = name
 
         # Set udev rules for interfaces
-        InterfaceUtil.tg_set_interfaces_udev_rules(node)
+        if not skip_tg_udev:
+            InterfaceUtil.tg_set_interfaces_udev_rules(node)
 
     @staticmethod
     def iface_update_numa_node(node):
@@ -587,15 +594,15 @@ class InterfaceUtil(object):
                             else:
                                 raise ValueError
                     except ValueError:
-                        logger.trace('Reading numa location failed for: {0}'\
-                            .format(if_pci))
+                        logger.trace('Reading numa location failed for: {0}'
+                                     .format(if_pci))
                     else:
                         Topology.set_interface_numa_node(node, if_key,
                                                          numa_node)
                         break
             else:
-                raise RuntimeError('Update numa node failed for: {0}'\
-                    .format(if_pci))
+                raise RuntimeError('Update numa node failed for: {0}'
+                                   .format(if_pci))
 
     @staticmethod
     def update_all_numa_nodes(nodes, skip_tg=False):
@@ -616,6 +623,7 @@ class InterfaceUtil(object):
 
     @staticmethod
     def update_all_interface_data_on_all_nodes(nodes, skip_tg=False,
+                                               skip_tg_udev=False,
                                                numa_node=False):
         """Update interface names on all nodes in DICT__nodes.
 
@@ -623,17 +631,20 @@ class InterfaceUtil(object):
         of all nodes mentioned in the topology dictionary.
 
         :param nodes: Nodes in the topology.
-        :param skip_tg: Skip TG node
+        :param skip_tg: Skip TG node.
+        :param skip_tg_udev: Skip udev rename on TG node.
         :param numa_node: Retrieve numa_node location.
         :type nodes: dict
         :type skip_tg: bool
+        :type skip_tg_udev: bool
         :type numa_node: 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)
+                InterfaceUtil.update_tg_interface_data_on_node(
+                    node_data, skip_tg_udev)
 
             if numa_node:
                 if node_data['type'] == NodeType.DUT:
@@ -663,13 +674,13 @@ class InterfaceUtil(object):
                                                sw_if_index=sw_if_index,
                                                vlan=vlan)
         if output[0]["retval"] == 0:
-            sw_subif_idx = output[0]["sw_if_index"]
+            sw_vlan_idx = output[0]["sw_if_index"]
             logger.trace('VLAN subinterface with sw_if_index {} and VLAN ID {} '
-                         'created on node {}'.format(sw_subif_idx,
+                         'created on node {}'.format(sw_vlan_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_sw_if_index(node, if_key, sw_vlan_idx)
+            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_vlan_idx)
             Topology.update_interface_name(node, if_key, ifc_name)
         else:
             raise RuntimeError('Unable to create VLAN subinterface on node {}'
@@ -678,7 +689,7 @@ class InterfaceUtil(object):
         with VatTerminal(node, False) as vat:
             vat.vat_terminal_exec_cmd('exec show interfaces')
 
-        return '{}.{}'.format(interface, vlan), sw_subif_idx
+        return '{}.{}'.format(interface, vlan), sw_vlan_idx
 
     @staticmethod
     def create_vxlan_interface(node, vni, source_ip, destination_ip):
@@ -840,12 +851,12 @@ class InterfaceUtil(object):
                                                type_subif=type_subif)
 
         if output[0]["retval"] == 0:
-            sw_subif_idx = output[0]["sw_if_index"]
+            sw_vlan_idx = output[0]["sw_if_index"]
             logger.trace('Created subinterface with index {}'
-                         .format(sw_subif_idx))
+                         .format(sw_vlan_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_sw_if_index(node, if_key, sw_vlan_idx)
+            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_vlan_idx)
             Topology.update_interface_name(node, if_key, ifc_name)
         else:
             raise RuntimeError('Unable to create sub-interface on node {}'
@@ -855,7 +866,7 @@ class InterfaceUtil(object):
             vat.vat_terminal_exec_cmd('exec show interfaces')
 
         name = '{}.{}'.format(interface, sub_id)
-        return name, sw_subif_idx
+        return name, sw_vlan_idx
 
     @staticmethod
     def create_gre_tunnel_interface(node, source_ip, destination_ip):
@@ -871,28 +882,38 @@ 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)
-
-            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)
+        try:
+            src_address = inet_pton(AF_INET6, source_ip)
+            dst_address = inet_pton(AF_INET6, destination_ip)
+            is_ipv6 = 1
+        except inet_error:
+            src_address = inet_pton(AF_INET, source_ip)
+            dst_address = inet_pton(AF_INET, destination_ip)
+            is_ipv6 = 0
+
+        cmd = 'gre_tunnel_add_del'
+        tunnel = dict(type=0,
+                      instance=Constants.BITWISE_NON_ZERO,
+                      src=src_address,
+                      dst=dst_address,
+                      outer_fib_id=0,
+                      session_id=0)
+        args = dict(is_add=1,
+                    tunnel=tunnel)
+        err_msg = 'Failed to create GRE tunnel interface on host {host}'.format(
+            host=node['host'])
+        with PapiExecutor(node) as papi_exec:
+            papi_resp = papi_exec.add(cmd, **args).get_replies(err_msg).\
+                verify_reply(err_msg=err_msg)
+
+        sw_if_idx = papi_resp['sw_if_index']
+        if_key = Topology.add_new_port(node, 'gre_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 name, sw_if_idx
-        else:
-            raise RuntimeError('Unable to create GRE tunnel on node {}.'
-                               .format(node))
+        return ifc_name, sw_if_idx
 
     @staticmethod
     def vpp_create_loopback(node):
@@ -983,21 +1004,27 @@ class InterfaceUtil(object):
         Topology.update_interface_mac_address(node, if_key, ifc_mac)
 
     @staticmethod
-    def vpp_create_avf_interface(node, vf_pci_addr):
+    def vpp_create_avf_interface(node, vf_pci_addr, num_rx_queues=None):
         """Create AVF interface on VPP node.
 
         :param node: DUT node from topology.
         :param vf_pci_addr: Virtual Function PCI address.
+        :param num_rx_queues: Number of RX queues.
         :type node: dict
         :type vf_pci_addr: str
+        :type num_rx_queues: int
         :returns: Interface key (name) in topology.
         :rtype: str
         :raises RuntimeError: If it is not possible to create AVF interface on
             the node.
         """
+        num_rx_queues = 'num-rx-queues {num_rx_queues}'\
+            .format(num_rx_queues=num_rx_queues) if num_rx_queues else ''
+
         with VatTerminal(node, json_param=False) as vat:
             vat.vat_terminal_exec_cmd_from_template('create_avf_interface.vat',
-                                                    vf_pci_addr=vf_pci_addr)
+                                                    vf_pci_addr=vf_pci_addr,
+                                                    num_rx_queues=num_rx_queues)
             output = vat.vat_stdout
 
         if output is not None:
@@ -1312,18 +1339,19 @@ class InterfaceUtil(object):
         exec_cmd_no_error(node, cmd, sudo=True)
 
     @staticmethod
-    def init_avf_interface(node, ifc_key, numvfs=1, topology_type='L2'):
+    def init_avf_interface(node, ifc_key, numvfs=1, osi_layer='L2'):
         """Init PCI device by creating VFs and bind them to vfio-pci for AVF
         driver testing on DUT.
 
         :param node: DUT node.
-        :param iface_key: Interface key from topology file.
+        :param ifc_key: Interface key from topology file.
         :param numvfs: Number of VFs to initialize, 0 - disable the VFs.
-        :param topology_type: Topology type.
+        :param osi_layer: OSI Layer type to initialize TG with.
+            Default value "L2" sets linux interface spoof off.
         :type node: dict
-        :iface_key: str
+        :type ifc_key: str
         :type numvfs: int
-        :typ topology_type: str
+        :type osi_layer: str
         :returns: Virtual Function topology interface keys.
         :rtype: list
         """
@@ -1335,8 +1363,8 @@ class InterfaceUtil(object):
         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(':', r'\:'))
+        current_driver = DUTSetup.get_pci_dev_driver(
+            node, pf_pci_addr.replace(':', r'\:'))
 
         VPPUtil.stop_vpp_service(node)
         if current_driver != kernel_driver:
@@ -1362,7 +1390,7 @@ class InterfaceUtil(object):
                 format(pci=pf_pci_addr)
             InterfaceUtil.set_linux_interface_trust_on(node, pf_dev,
                                                        vf_id=vf_id)
-            if topology_type == 'L2':
+            if osi_layer == '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,
@@ -1382,3 +1410,324 @@ class InterfaceUtil(object):
             vf_ifc_keys.append(vf_ifc_key)
 
         return vf_ifc_keys
+
+    @staticmethod
+    def vpp_create_multiple_vxlan_ipv4_tunnels(
+            node, node_vxlan_if, node_vlan_if, op_node, op_node_if,
+            n_tunnels, vni_start, src_ip_start, dst_ip_start, ip_step, ip_limit,
+            bd_id_start):
+        """Create multiple VXLAN tunnel interfaces and VLAN sub-interfaces on
+        VPP node.
+
+        Put each pair of VXLAN tunnel interface and VLAN sub-interface to
+        separate bridge-domain.
+
+        :param node: VPP node to create VXLAN tunnel interfaces.
+        :param node_vxlan_if: VPP node interface key to create VXLAN tunnel
+            interfaces.
+        :param node_vlan_if: VPP node interface key to create VLAN
+            sub-interface.
+        :param op_node: Opposite VPP node for VXLAN tunnel interfaces.
+        :param op_node_if: Opposite VPP node interface key for VXLAN tunnel
+            interfaces.
+        :param n_tunnels: Number of tunnel interfaces to create.
+        :param vni_start: VNI start ID.
+        :param src_ip_start: VXLAN tunnel source IP address start.
+        :param dst_ip_start: VXLAN tunnel destination IP address start.
+        :param ip_step: IP address incremental step.
+        :param ip_limit: IP address limit.
+        :param bd_id_start: Bridge-domain ID start.
+        :type node: dict
+        :type node_vxlan_if: str
+        :type node_vlan_if: str
+        :type op_node: dict
+        :type op_node_if: str
+        :type n_tunnels: int
+        :type vni_start: int
+        :type src_ip_start: str
+        :type dst_ip_start: str
+        :type ip_step: int
+        :type ip_limit: str
+        :type bd_id_start: int
+        """
+        # configure IPs, create VXLAN interfaces and VLAN sub-interfaces
+        vxlan_count = InterfaceUtil.vpp_create_vxlan_and_vlan_interfaces(
+            node, node_vxlan_if, node_vlan_if, n_tunnels, vni_start,
+            src_ip_start, dst_ip_start, ip_step, ip_limit)
+
+        # update topology with VXLAN interfaces and VLAN sub-interfaces data
+        # and put interfaces up
+        InterfaceUtil.vpp_put_vxlan_and_vlan_interfaces_up(
+            node, vxlan_count, node_vlan_if)
+
+        # configure bridge domains, ARPs and routes
+        InterfaceUtil.vpp_put_vxlan_and_vlan_interfaces_to_bridge_domain(
+            node, node_vxlan_if, vxlan_count, op_node, op_node_if, dst_ip_start,
+            ip_step, bd_id_start)
+
+    @staticmethod
+    def vpp_create_vxlan_and_vlan_interfaces(
+            node, node_vxlan_if, node_vlan_if, vxlan_count, vni_start,
+            src_ip_start, dst_ip_start, ip_step, ip_limit):
+        """
+        Configure IPs, create VXLAN interfaces and VLAN sub-interfaces on VPP
+        node.
+
+        :param node: VPP node.
+        :param node_vxlan_if: VPP node interface key to create VXLAN tunnel
+            interfaces.
+        :param node_vlan_if: VPP node interface key to create VLAN
+            sub-interface.
+        :param vxlan_count: Number of tunnel interfaces to create.
+        :param vni_start: VNI start ID.
+        :param src_ip_start: VXLAN tunnel source IP address start.
+        :param dst_ip_start: VXLAN tunnel destination IP address start.
+        :param ip_step: IP address incremental step.
+        :param ip_limit: IP address limit.
+        :type node: dict
+        :type node_vxlan_if: str
+        :type node_vlan_if: str
+        :type vxlan_count: int
+        :type vni_start: int
+        :type src_ip_start: str
+        :type dst_ip_start: str
+        :type ip_step: int
+        :type ip_limit: str
+        :returns: Number of created VXLAN interfaces.
+        :rtype: int
+        """
+        commands = list()
+
+        src_ip_start_int = IPUtil.ip_to_int(src_ip_start)
+        dst_ip_start_int = IPUtil.ip_to_int(dst_ip_start)
+        ip_limit_int = IPUtil.ip_to_int(ip_limit)
+
+        tmp_fn = '/tmp/create_vxlan_interfaces.config'
+        for i in range(0, vxlan_count):
+            src_ip_int = src_ip_start_int + i * ip_step
+            dst_ip_int = dst_ip_start_int + i * ip_step
+            if src_ip_int > ip_limit_int or dst_ip_int > ip_limit_int:
+                logger.warn("Can't do more iterations - IPv4 address limit "
+                            "has been reached.")
+                vxlan_count = i
+                break
+            src_ip = IPUtil.int_to_ip(src_ip_int)
+            dst_ip = IPUtil.int_to_ip(dst_ip_int)
+            commands.append(
+                'sw_interface_add_del_address sw_if_index {sw_idx} {ip}/32\n'
+                .format(sw_idx=Topology.get_interface_sw_index(
+                    node, node_vxlan_if), ip=src_ip))
+            commands.append(
+                'vxlan_add_del_tunnel src {src_ip} dst {dst_ip} vni {vni}\n'
+                .format(src_ip=src_ip, dst_ip=dst_ip, vni=vni_start+i))
+            commands.append(
+                'create_vlan_subif sw_if_index {sw_idx} vlan {vlan}\n'
+                .format(sw_idx=Topology.get_interface_sw_index(
+                    node, node_vlan_if), vlan=i+1))
+
+        VatExecutor().write_and_execute_script(node, tmp_fn, commands)
+
+        return vxlan_count
+
+    @staticmethod
+    def vpp_put_vxlan_and_vlan_interfaces_up(node, vxlan_count, node_vlan_if):
+        """
+        Update topology with VXLAN interfaces and VLAN sub-interfaces data
+        and put interfaces up.
+
+        :param node: VPP node.
+        :param vxlan_count: Number of tunnel interfaces.
+        :param node_vlan_if: VPP node interface key where VLAN sub-interfaces
+            have been created.
+        :type node: dict
+        :type vxlan_count: int
+        :type node_vlan_if: str
+        """
+        with VatTerminal(node) as vat_ter:
+            if_data = vat_ter.vat_terminal_exec_cmd_from_template(
+                'interface_dump.vat')[0]
+
+        tmp_fn = '/tmp/put_subinterfaces_up.config'
+        commands = list()
+        for i in range(0, vxlan_count):
+            vxlan_subif_key = Topology.add_new_port(node, 'vxlan_tunnel')
+            vxlan_subif_name = 'vxlan_tunnel{nr}'.format(nr=i)
+            vxlan_found = False
+            vxlan_subif_idx = None
+            vlan_subif_key = Topology.add_new_port(node, 'vlan_subif')
+            vlan_subif_name = '{if_name}.{vlan}'.format(
+                if_name=Topology.get_interface_name(
+                    node, node_vlan_if), vlan=i+1)
+            vlan_found = False
+            vlan_idx = None
+            for data in if_data:
+                if_name = data['interface_name']
+                if not vxlan_found and if_name == vxlan_subif_name:
+                    vxlan_subif_idx = data['sw_if_index']
+                    vxlan_found = True
+                elif not vlan_found and if_name == vlan_subif_name:
+                    vlan_idx = data['sw_if_index']
+                    vlan_found = True
+                if vxlan_found and vlan_found:
+                    break
+            Topology.update_interface_sw_if_index(
+                node, vxlan_subif_key, vxlan_subif_idx)
+            Topology.update_interface_name(
+                node, vxlan_subif_key, vxlan_subif_name)
+            commands.append(
+                'sw_interface_set_flags sw_if_index {sw_idx} admin-up link-up\n'
+                .format(sw_idx=vxlan_subif_idx))
+            Topology.update_interface_sw_if_index(
+                node, vlan_subif_key, vlan_idx)
+            Topology.update_interface_name(
+                node, vlan_subif_key, vlan_subif_name)
+            commands.append(
+                'sw_interface_set_flags sw_if_index {sw_idx} admin-up link-up\n'
+                .format(sw_idx=vlan_idx))
+
+        VatExecutor().write_and_execute_script(node, tmp_fn, commands)
+
+    @staticmethod
+    def vpp_put_vxlan_and_vlan_interfaces_to_bridge_domain(
+            node, node_vxlan_if, vxlan_count, op_node, op_node_if, dst_ip_start,
+            ip_step, bd_id_start):
+        """
+        Configure ARPs and routes for VXLAN interfaces and put each pair of
+        VXLAN tunnel interface and VLAN sub-interface to separate bridge-domain.
+
+        :param node: VPP node.
+        :param node_vxlan_if: VPP node interface key where VXLAN tunnel
+            interfaces have been created.
+        :param vxlan_count: Number of tunnel interfaces.
+        :param op_node: Opposite VPP node for VXLAN tunnel interfaces.
+        :param op_node_if: Opposite VPP node interface key for VXLAN tunnel
+            interfaces.
+        :param dst_ip_start: VXLAN tunnel destination IP address start.
+        :param ip_step: IP address incremental step.
+        :param bd_id_start: Bridge-domain ID start.
+        :type node: dict
+        :type node_vxlan_if: str
+        :type vxlan_count: int
+        :type op_node: dict
+        :type op_node_if:
+        :type dst_ip_start: str
+        :type ip_step: int
+        :type bd_id_start: int
+        """
+        sw_idx_vxlan = Topology.get_interface_sw_index(node, node_vxlan_if)
+
+        dst_ip_start_int = IPUtil.ip_to_int(dst_ip_start)
+
+        tmp_fn = '/tmp/configure_routes_and_bridge_domains.config'
+        commands = list()
+        for i in range(0, vxlan_count):
+            dst_ip = IPUtil.int_to_ip(dst_ip_start_int + i * ip_step)
+            commands.append(
+                'ip_neighbor_add_del sw_if_index {sw_idx} dst {ip} mac {mac}\n'
+                .format(sw_idx=sw_idx_vxlan, ip=dst_ip,
+                        mac=Topology.get_interface_mac(op_node, op_node_if)))
+            commands.append(
+                'ip_add_del_route {ip}/32 via {ip} sw_if_index {sw_idx}'
+                ' resolve-attempts 10 count 1\n'.format(
+                    ip=dst_ip, sw_idx=sw_idx_vxlan))
+            bd_id = bd_id_start + i
+            subif_id = i + 1
+            commands.append(
+                'sw_interface_set_l2_bridge sw_if_index {sw_idx} bd_id {bd_id} '
+                'shg 0 enable\n'.format(sw_idx=Topology.get_interface_sw_index(
+                    node, 'vxlan_tunnel{nr}'.format(nr=subif_id)), bd_id=bd_id))
+            commands.append(
+                'sw_interface_set_l2_bridge sw_if_index {sw_idx} bd_id {bd_id} '
+                'shg 0 enable\n'.format(sw_idx=Topology.get_interface_sw_index(
+                    node, 'vlan_subif{nr}'.format(nr=subif_id)), bd_id=bd_id))
+
+        VatExecutor().write_and_execute_script(node, tmp_fn, commands)
+
+    @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 = 'sw_interface_rx_placement_dump'
+        cmd_reply = 'sw_interface_rx_placement_details'
+        err_msg = "Failed to run '{cmd}' PAPI command on host {host}!".format(
+            cmd=cmd, host=node['host'])
+        with PapiExecutor(node) as papi_exec:
+            for ifc in node['interfaces'].values():
+                if ifc['vpp_sw_index'] is not None:
+                    papi_exec.add(cmd, sw_if_index=ifc['vpp_sw_index'])
+            papi_resp = papi_exec.get_dump(err_msg)
+        thr_mapping = [s[cmd_reply] for r in papi_resp.reply
+                       for s in r['api_reply']]
+        return sorted(thr_mapping, key=lambda k: k['sw_if_index'])
+
+    @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 = 'sw_interface_set_rx_placement'
+        cmd_reply = 'sw_interface_set_rx_placement_reply'
+        err_msg = "Failed to run '{cmd}' PAPI command on host {host}!".format(
+            host=node['host'], cmd=cmd)
+        args = dict(sw_if_index=sw_if_index, queue_id=queue_id,
+                    worker_id=worker_id)
+        with PapiExecutor(node) as papi_exec:
+            papi_resp = papi_exec.add(cmd, **args).execute_should_pass(err_msg)
+        data = papi_resp.reply[0]['api_reply'][cmd_reply]
+        if data['retval'] != 0:
+            raise RuntimeError("Failed to set interface RX placement "
+                               "to worker on host {host}".
+                               format(host=node['host']))
+
+    @staticmethod
+    def vpp_round_robin_rx_placement(node, prefix):
+        """Set Round Robin interface RX placement on all worker threads
+        on node.
+
+        :param node: Topology nodes.
+        :param prefix: Interface name prefix.
+        :type node: dict
+        :type prefix: str
+        """
+        worker_id = 0
+        worker_cnt = len(VPPUtil.vpp_show_threads(node)) - 1
+        for placement in InterfaceUtil.vpp_sw_interface_rx_placement_dump(node):
+            for interface in node['interfaces'].values():
+                if placement['sw_if_index'] == interface['vpp_sw_index'] \
+                    and prefix in interface['name']:
+                    InterfaceUtil.vpp_sw_interface_set_rx_placement(
+                        node, placement['sw_if_index'], placement['queue_id'],
+                        worker_id % worker_cnt)
+                    worker_id += 1
+
+    @staticmethod
+    def vpp_round_robin_rx_placement_on_all_duts(nodes, prefix):
+        """Set Round Robin interface RX placement on all worker threads
+        on all DUTs.
+
+        :param nodes: Topology nodes.
+        :param prefix: Interface name prefix.
+        :type nodes: dict
+        :type prefix: str
+        """
+        for node in nodes.values():
+            if node['type'] == NodeType.DUT:
+                InterfaceUtil.vpp_round_robin_rx_placement(node, prefix)