vppdevice: fix install-dep failure when component install is required

[csit.git] / resources / libraries / python / InterfaceUtil.py

diff --git a/resources/libraries/python/InterfaceUtil.py b/resources/libraries/python/InterfaceUtil.py
index 46b1ffb..6de17d1 100644 (file)
--- a/resources/libraries/python/InterfaceUtil.py
+++ b/resources/libraries/python/InterfaceUtil.py
@@ -13,19 +13,18 @@
 
 """Interface util library."""
 
 
 """Interface util library."""
 

-from socket import AF_INET, AF_INET6, inet_ntop, inet_pton
+from socket import AF_INET, AF_INET6, inet_ntop

 from time import sleep
 
 from enum import IntEnum
 from time import sleep
 
 from enum import IntEnum

-from ipaddress import IPv4Address, IPv6Address
-from ipaddress import AddressValueError, NetmaskValueError
+from ipaddress import ip_address

 from robot.api import logger
 
 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.L2Util import L2Util
 from robot.api import logger
 
 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.L2Util import L2Util

-from resources.libraries.python.PapiExecutor import PapiExecutor
+from resources.libraries.python.PapiExecutor import PapiSocketExecutor

 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.parsers.JsonParser import JsonParser
 from resources.libraries.python.ssh import SSH, exec_cmd_no_error
 from resources.libraries.python.topology import NodeType, Topology


@@ -139,9 +138,8 @@ class InterfaceUtil(object):
                 host=node['host'])
             args = dict(sw_if_index=sw_if_index,
                         admin_up_down=admin_up_down)
                 host=node['host'])
             args = dict(sw_if_index=sw_if_index,
                         admin_up_down=admin_up_down)

-            with PapiExecutor(node) as papi_exec:
-                papi_exec.add(cmd, **args).get_replies(err_msg).\
-                    verify_reply(err_msg=err_msg)
+            with PapiSocketExecutor(node) as papi_exec:
+                papi_exec.add(cmd, **args).get_reply(err_msg)

         elif node['type'] == NodeType.TG or node['type'] == NodeType.VM:
             cmd = 'ip link set {ifc} {state}'.format(
                 ifc=iface_name, state=state)
         elif node['type'] == NodeType.TG or node['type'] == NodeType.VM:
             cmd = 'ip link set {ifc} {state}'.format(
                 ifc=iface_name, state=state)


@@ -211,9 +209,13 @@ class InterfaceUtil(object):
             host=node['host'])
         args = dict(sw_if_index=sw_if_index,
                     mtu=int(mtu))
             host=node['host'])
         args = dict(sw_if_index=sw_if_index,
                     mtu=int(mtu))

-        with PapiExecutor(node) as papi_exec:
-            papi_exec.add(cmd, **args).get_replies(err_msg).\
-                verify_reply(err_msg=err_msg)
+        try:
+            with PapiSocketExecutor(node) as papi_exec:
+                papi_exec.add(cmd, **args).get_reply(err_msg)
+        except AssertionError as err:
+            # TODO: Make failure tolerance optional.
+            logger.debug("Setting MTU failed. Expected?\n{err}".format(
+                err=err))

 
     @staticmethod
     def vpp_set_interfaces_mtu_on_node(node, mtu=9200):
 
     @staticmethod
     def vpp_set_interfaces_mtu_on_node(node, mtu=9200):


@@ -315,15 +317,12 @@ class InterfaceUtil(object):
             param = ''
 
         cmd = 'sw_interface_dump'
             param = ''
 
         cmd = 'sw_interface_dump'

-        cmd_reply = 'sw_interface_details'

         args = dict(name_filter_valid=0,
                     name_filter='')
         err_msg = 'Failed to get interface dump on host {host}'.format(
             host=node['host'])
         args = dict(name_filter_valid=0,
                     name_filter='')
         err_msg = 'Failed to get interface dump on host {host}'.format(
             host=node['host'])

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd, **args).get_dump(err_msg)
-
-        papi_if_dump = papi_resp.reply[0]['api_reply']
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)

 
         def process_if_dump(if_dump):
             """Process interface dump.
 
         def process_if_dump(if_dump):
             """Process interface dump.


@@ -341,12 +340,11 @@ class InterfaceUtil(object):
             return if_dump
 
         data = list() if interface is None else dict()
             return if_dump
 
         data = list() if interface is None else dict()

-        for item in papi_if_dump:
+        for if_dump in details:

             if interface is None:
             if interface is None:

-                data.append(process_if_dump(item[cmd_reply]))
-            elif str(item[cmd_reply].get(param)).rstrip('\x00') == \
-                    str(interface):
-                data = process_if_dump(item[cmd_reply])
+                data.append(process_if_dump(if_dump))
+            elif str(if_dump.get(param)).rstrip('\x00') == str(interface):
+                data = process_if_dump(if_dump)

                 break
 
         logger.debug('Interface data:\n{if_data}'.format(if_data=data))
                 break
 
         logger.debug('Interface data:\n{if_data}'.format(if_data=data))


@@ -731,17 +729,15 @@ class InterfaceUtil(object):
                     vlan_id=int(vlan))
         err_msg = 'Failed to create VLAN sub-interface on host {host}'.format(
             host=node['host'])
                     vlan_id=int(vlan))
         err_msg = 'Failed to create VLAN sub-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)
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

 
 

-        sw_if_idx = papi_resp['sw_if_index']

         if_key = Topology.add_new_port(node, 'vlan_subif')
         if_key = Topology.add_new_port(node, 'vlan_subif')

-        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_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)
 
         Topology.update_interface_name(node, if_key, ifc_name)
 

-        return '{ifc}.{vlan}'.format(ifc=interface, vlan=vlan), sw_if_idx
+        return '{ifc}.{vlan}'.format(ifc=interface, vlan=vlan), sw_if_index

 
     @staticmethod
     def create_vxlan_interface(node, vni, source_ip, destination_ip):
 
     @staticmethod
     def create_vxlan_interface(node, vni, source_ip, destination_ip):


@@ -760,40 +756,30 @@ class InterfaceUtil(object):
         :raises RuntimeError: if it is unable to create VxLAN interface on the
             node.
         """
         :raises RuntimeError: if it is unable to create VxLAN interface on the
             node.
         """

-        try:
-            src_address = IPv6Address(unicode(source_ip))
-            dst_address = IPv6Address(unicode(destination_ip))
-            af_inet = AF_INET6
-            is_ipv6 = 1
-        except (AddressValueError, NetmaskValueError):
-            src_address = IPv4Address(unicode(source_ip))
-            dst_address = IPv4Address(unicode(destination_ip))
-            af_inet = AF_INET
-            is_ipv6 = 0
+        src_address = ip_address(unicode(source_ip))
+        dst_address = ip_address(unicode(destination_ip))

 
         cmd = 'vxlan_add_del_tunnel'
         args = dict(is_add=1,
 
         cmd = 'vxlan_add_del_tunnel'
         args = dict(is_add=1,

-                    is_ipv6=is_ipv6,
+                    is_ipv6=1 if src_address.version == 6 else 0,

                     instance=Constants.BITWISE_NON_ZERO,
                     instance=Constants.BITWISE_NON_ZERO,

-                    src_address=inet_pton(af_inet, str(src_address)),
-                    dst_address=inet_pton(af_inet, str(dst_address)),
+                    src_address=src_address.packed,
+                    dst_address=dst_address.packed,

                     mcast_sw_if_index=Constants.BITWISE_NON_ZERO,
                     encap_vrf_id=0,
                     decap_next_index=Constants.BITWISE_NON_ZERO,
                     vni=int(vni))
         err_msg = 'Failed to create VXLAN tunnel interface on host {host}'.\
             format(host=node['host'])
                     mcast_sw_if_index=Constants.BITWISE_NON_ZERO,
                     encap_vrf_id=0,
                     decap_next_index=Constants.BITWISE_NON_ZERO,
                     vni=int(vni))
         err_msg = 'Failed to create VXLAN 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)
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

 
 

-        sw_if_idx = papi_resp['sw_if_index']

         if_key = Topology.add_new_port(node, 'vxlan_tunnel')
         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_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)
 
         Topology.update_interface_name(node, if_key, ifc_name)
 

-        return sw_if_idx
+        return sw_if_index

 
     @staticmethod
     def vxlan_dump(node, interface=None):
 
     @staticmethod
     def vxlan_dump(node, interface=None):


@@ -816,14 +802,11 @@ class InterfaceUtil(object):
             sw_if_index = int(Constants.BITWISE_NON_ZERO)
 
         cmd = 'vxlan_tunnel_dump'
             sw_if_index = int(Constants.BITWISE_NON_ZERO)
 
         cmd = 'vxlan_tunnel_dump'

-        cmd_reply = 'vxlan_tunnel_details'

         args = dict(sw_if_index=sw_if_index)
         err_msg = 'Failed to get VXLAN dump on host {host}'.format(
             host=node['host'])
         args = dict(sw_if_index=sw_if_index)
         err_msg = 'Failed to get VXLAN dump on host {host}'.format(
             host=node['host'])

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd, **args).get_dump(err_msg)
-
-        papi_vxlan_dump = papi_resp.reply[0]['api_reply']
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)

 
         def process_vxlan_dump(vxlan_dump):
             """Process vxlan dump.
 
         def process_vxlan_dump(vxlan_dump):
             """Process vxlan dump.


@@ -846,11 +829,11 @@ class InterfaceUtil(object):
             return vxlan_dump
 
         data = list() if interface is None else dict()
             return vxlan_dump
 
         data = list() if interface is None else dict()

-        for item in papi_vxlan_dump:
+        for vxlan_dump in details:

             if interface is None:
             if interface is None:

-                data.append(process_vxlan_dump(item[cmd_reply]))
-            elif item[cmd_reply]['sw_if_index'] == sw_if_index:
-                data = process_vxlan_dump(item[cmd_reply])
+                data.append(process_vxlan_dump(vxlan_dump))
+            elif vxlan_dump['sw_if_index'] == sw_if_index:
+                data = process_vxlan_dump(vxlan_dump)

                 break
 
         logger.debug('VXLAN data:\n{vxlan_data}'.format(vxlan_data=data))
                 break
 
         logger.debug('VXLAN data:\n{vxlan_data}'.format(vxlan_data=data))


@@ -868,13 +851,10 @@ class InterfaceUtil(object):
         :rtype: list
         """
         cmd = 'sw_interface_vhost_user_dump'
         :rtype: list
         """
         cmd = 'sw_interface_vhost_user_dump'

-        cmd_reply = 'sw_interface_vhost_user_details'

         err_msg = 'Failed to get vhost-user dump on host {host}'.format(
             host=node['host'])
         err_msg = 'Failed to get vhost-user dump on host {host}'.format(
             host=node['host'])

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd).get_dump(err_msg)
-
-        papi_vxlan_dump = papi_resp.reply[0]['api_reply']
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd).get_details(err_msg)

 
         def process_vhost_dump(vhost_dump):
             """Process vhost dump.
 
         def process_vhost_dump(vhost_dump):
             """Process vhost dump.


@@ -890,12 +870,13 @@ class InterfaceUtil(object):
                 vhost_dump['sock_filename'].rstrip('\x00')
             return vhost_dump
 
                 vhost_dump['sock_filename'].rstrip('\x00')
             return vhost_dump
 

-        data = list()
-        for item in papi_vxlan_dump:
-            data.append(process_vhost_dump(item[cmd_reply]))
+        for vhost_dump in details:
+            # In-place edits.
+            process_vhost_dump(vhost_dump)

 
 

-        logger.debug('Vhost-user data:\n{vhost_data}'.format(vhost_data=data))
-        return data
+        logger.debug('Vhost-user details:\n{vhost_details}'.format(
+            vhost_details=details))
+        return details

 
     @staticmethod
     def tap_dump(node, name=None):
 
     @staticmethod
     def tap_dump(node, name=None):


@@ -913,13 +894,10 @@ class InterfaceUtil(object):
         :rtype: dict or list
         """
         cmd = 'sw_interface_tap_v2_dump'
         :rtype: dict or list
         """
         cmd = 'sw_interface_tap_v2_dump'

-        cmd_reply = 'sw_interface_tap_v2_details'

         err_msg = 'Failed to get TAP dump on host {host}'.format(
             host=node['host'])
         err_msg = 'Failed to get TAP dump on host {host}'.format(
             host=node['host'])

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd).get_dump(err_msg)
-
-        papi_tap_dump = papi_resp.reply[0]['api_reply']
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd).get_details(err_msg)

 
         def process_tap_dump(tap_dump):
             """Process tap dump.
 
         def process_tap_dump(tap_dump):
             """Process tap dump.


@@ -942,11 +920,11 @@ class InterfaceUtil(object):
             return tap_dump
 
         data = list() if name is None else dict()
             return tap_dump
 
         data = list() if name is None else dict()

-        for item in papi_tap_dump:
+        for tap_dump in details:

             if name is None:
             if name is None:

-                data.append(process_tap_dump(item[cmd_reply]))
-            elif item[cmd_reply].get('dev_name').rstrip('\x00') == name:
-                data = process_tap_dump(item[cmd_reply])
+                data.append(process_tap_dump(tap_dump))
+            elif tap_dump.get('dev_name').rstrip('\x00') == name:
+                data = process_tap_dump(tap_dump)

                 break
 
         logger.debug('TAP data:\n{tap_data}'.format(tap_data=data))
                 break
 
         logger.debug('TAP data:\n{tap_data}'.format(tap_data=data))


@@ -994,17 +972,15 @@ class InterfaceUtil(object):
             inner_vlan_id=int(inner_vlan_id) if inner_vlan_id else 0)
         err_msg = 'Failed to create sub-interface on host {host}'.format(
             host=node['host'])
             inner_vlan_id=int(inner_vlan_id) if inner_vlan_id else 0)
         err_msg = 'Failed to create sub-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)
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

 
 

-        sw_subif_idx = papi_resp['sw_if_index']

         if_key = Topology.add_new_port(node, 'subinterface')
         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_if_index)
+        ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_index)

         Topology.update_interface_name(node, if_key, ifc_name)
 
         Topology.update_interface_name(node, if_key, ifc_name)
 

-        return '{ifc}.{s_id}'.format(ifc=interface, s_id=sub_id), sw_subif_idx
+        return '{ifc}.{s_id}'.format(ifc=interface, s_id=sub_id), sw_if_index

 
     @staticmethod
     def create_gre_tunnel_interface(node, source_ip, destination_ip):
 
     @staticmethod
     def create_gre_tunnel_interface(node, source_ip, destination_ip):


@@ -1031,17 +1007,15 @@ class InterfaceUtil(object):
                     tunnel=tunnel)
         err_msg = 'Failed to create GRE tunnel interface on host {host}'.format(
             host=node['host'])
                     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)
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

 
 

-        sw_if_idx = papi_resp['sw_if_index']

         if_key = Topology.add_new_port(node, 'gre_tunnel')
         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_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)
 
         Topology.update_interface_name(node, if_key, ifc_name)
 

-        return ifc_name, sw_if_idx
+        return ifc_name, sw_if_index

 
     @staticmethod
     def vpp_create_loopback(node):
 
     @staticmethod
     def vpp_create_loopback(node):


@@ -1058,17 +1032,15 @@ class InterfaceUtil(object):
         args = dict(mac_address=0)
         err_msg = 'Failed to create loopback interface on host {host}'.format(
             host=node['host'])
         args = dict(mac_address=0)
         err_msg = 'Failed to create loopback 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)
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

 
 

-        sw_if_idx = papi_resp['sw_if_index']

         if_key = Topology.add_new_port(node, 'loopback')
         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_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)
 
         Topology.update_interface_name(node, if_key, ifc_name)
 

-        return sw_if_idx
+        return sw_if_index

 
     @staticmethod
     def vpp_create_bond_interface(node, mode, load_balance=None, mac=None):
 
     @staticmethod
     def vpp_create_bond_interface(node, mode, load_balance=None, mac=None):


@@ -1099,39 +1071,38 @@ class InterfaceUtil(object):
                             lb=load_balance.upper())).value)
         err_msg = 'Failed to create bond interface on host {host}'.format(
             host=node['host'])
                             lb=load_balance.upper())).value)
         err_msg = 'Failed to create bond 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)
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

 
 

-        sw_if_idx = papi_resp['sw_if_index']
-        InterfaceUtil.add_eth_interface(node, sw_if_idx=sw_if_idx,
+        InterfaceUtil.add_eth_interface(node, sw_if_index=sw_if_index,

                                         ifc_pfx='eth_bond')
                                         ifc_pfx='eth_bond')

-        if_key = Topology.get_interface_by_sw_index(node, sw_if_idx)
+        if_key = Topology.get_interface_by_sw_index(node, sw_if_index)

 
         return if_key
 
     @staticmethod
 
         return if_key
 
     @staticmethod

-    def add_eth_interface(node, ifc_name=None, sw_if_idx=None, ifc_pfx=None):
+    def add_eth_interface(node, ifc_name=None, sw_if_index=None, ifc_pfx=None):

         """Add ethernet interface to current topology.
 
         :param node: DUT node from topology.
         :param ifc_name: Name of the interface.
         """Add ethernet interface to current topology.
 
         :param node: DUT node from topology.
         :param ifc_name: Name of the interface.

-        :param sw_if_idx: SW interface index.
+        :param sw_if_index: SW interface index.

         :param ifc_pfx: Interface key prefix.
         :type node: dict
         :type ifc_name: str
         :param ifc_pfx: Interface key prefix.
         :type node: dict
         :type ifc_name: str

-        :type sw_if_idx: int
+        :type sw_if_index: int

         :type ifc_pfx: str
         """
         if_key = Topology.add_new_port(node, ifc_pfx)
 
         :type ifc_pfx: str
         """
         if_key = Topology.add_new_port(node, ifc_pfx)
 

-        if ifc_name and sw_if_idx is None:
-            sw_if_idx = InterfaceUtil.vpp_get_interface_sw_index(node, ifc_name)
-        Topology.update_interface_sw_if_index(node, if_key, sw_if_idx)
-        if sw_if_idx and ifc_name is None:
-            ifc_name = InterfaceUtil.vpp_get_interface_name(node, sw_if_idx)
+        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)
         Topology.update_interface_name(node, if_key, ifc_name)

-        ifc_mac = InterfaceUtil.vpp_get_interface_mac(node, sw_if_idx)
+        ifc_mac = InterfaceUtil.vpp_get_interface_mac(node, sw_if_index)

         Topology.update_interface_mac_address(node, if_key, ifc_mac)
 
     @staticmethod
         Topology.update_interface_mac_address(node, if_key, ifc_mac)
 
     @staticmethod


@@ -1157,14 +1128,12 @@ class InterfaceUtil(object):
                     txq_size=0)
         err_msg = 'Failed to create AVF interface on host {host}'.format(
             host=node['host'])
                     txq_size=0)
         err_msg = 'Failed to create AVF 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)
+        with PapiSocketExecutor(node) as papi_exec:
+            sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

 
 

-        sw_if_idx = papi_resp['sw_if_index']
-        InterfaceUtil.add_eth_interface(node, sw_if_idx=sw_if_idx,
+        InterfaceUtil.add_eth_interface(node, sw_if_index=sw_if_index,

                                         ifc_pfx='eth_avf')
                                         ifc_pfx='eth_avf')

-        if_key = Topology.get_interface_by_sw_index(node, sw_if_idx)
+        if_key = Topology.get_interface_by_sw_index(node, sw_if_index)

 
         return if_key
 
 
         return if_key
 


@@ -1191,56 +1160,47 @@ class InterfaceUtil(object):
                   'interface {bond} on host {host}'.format(ifc=interface,
                                                            bond=bond_if,
                                                            host=node['host'])
                   'interface {bond} on host {host}'.format(ifc=interface,
                                                            bond=bond_if,
                                                            host=node['host'])

-        with PapiExecutor(node) as papi_exec:
-            papi_exec.add(cmd, **args).get_replies(err_msg).\
-                verify_reply(err_msg=err_msg)
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)

 
     @staticmethod
 
     @staticmethod

-    def vpp_show_bond_data_on_node(node, details=False):
+    def vpp_show_bond_data_on_node(node, verbose=False):

         """Show (detailed) bond information on VPP node.
 
         :param node: DUT node from topology.
         """Show (detailed) bond information on VPP node.
 
         :param node: DUT node from topology.

-        :param details: If detailed information is required or not.
+        :param verbose: If detailed information is required or not.

         :type node: dict
         :type node: dict

-        :type details: bool
+        :type verbose: bool

         """
         cmd = 'sw_interface_bond_dump'
         """
         cmd = 'sw_interface_bond_dump'

-        cmd_reply = 'sw_interface_bond_details'

         err_msg = 'Failed to get bond interface dump on host {host}'.format(
             host=node['host'])
 
         data = ('Bond data on node {host}:\n'.format(host=node['host']))
         err_msg = 'Failed to get bond interface dump on host {host}'.format(
             host=node['host'])
 
         data = ('Bond data on node {host}:\n'.format(host=node['host']))

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd).get_dump(err_msg)
-
-        papi_dump = papi_resp.reply[0]['api_reply']
-        for item in papi_dump:
-            data += ('{b}\n'.format(b=item[cmd_reply]['interface_name'].
-                                    rstrip('\x00')))
-            data += ('  mode: {m}\n'.
-                     format(m=LinkBondMode(item[cmd_reply]['mode']).name.
-                            lower()))
-            data += ('  load balance: {lb}\n'.
-                     format(lb=LinkBondLoadBalance(item[cmd_reply]['lb']).name.
-                            lower()))
-            data += ('  number of active slaves: {n}\n'.
-                     format(n=item[cmd_reply]['active_slaves']))
-            if details:
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd).get_details(err_msg)
+
+        for bond in details:
+            data += ('{b}\n'.format(b=bond['interface_name'].rstrip('\x00')))
+            data += ('  mode: {m}\n'.format(m=LinkBondMode(
+                bond['mode']).name.lower()))
+            data += ('  load balance: {lb}\n'.format(lb=LinkBondLoadBalance(
+                bond['lb']).name.lower()))
+            data += ('  number of active slaves: {n}\n'.format(
+                n=bond['active_slaves']))
+            if verbose:

                 slave_data = InterfaceUtil.vpp_bond_slave_dump(
                     node, Topology.get_interface_by_sw_index(
                 slave_data = InterfaceUtil.vpp_bond_slave_dump(
                     node, Topology.get_interface_by_sw_index(

-                        node, item[cmd_reply]['sw_if_index']))
+                        node, bond['sw_if_index']))

                 for slave in slave_data:
                     if not slave['is_passive']:
                         data += ('    {s}\n'.format(s=slave['interface_name']))
                 for slave in slave_data:
                     if not slave['is_passive']:
                         data += ('    {s}\n'.format(s=slave['interface_name']))

-            data += ('  number of slaves: {n}\n'.
-                     format(n=item[cmd_reply]['slaves']))
-            if details:
+            data += ('  number of slaves: {n}\n'.format(n=bond['slaves']))
+            if verbose:

                 for slave in slave_data:
                     data += ('    {s}\n'.format(s=slave['interface_name']))
                 for slave in slave_data:
                     data += ('    {s}\n'.format(s=slave['interface_name']))

-            data += ('  interface id: {i}\n'.
-                     format(i=item[cmd_reply]['id']))
-            data += ('  sw_if_index: {i}\n'.
-                     format(i=item[cmd_reply]['sw_if_index']))
+            data += ('  interface id: {i}\n'.format(i=bond['id']))
+            data += ('  sw_if_index: {i}\n'.format(i=bond['sw_if_index']))

         logger.info(data)
 
     @staticmethod
         logger.info(data)
 
     @staticmethod


@@ -1255,16 +1215,13 @@ class InterfaceUtil(object):
         :rtype: dict
         """
         cmd = 'sw_interface_slave_dump'
         :rtype: dict
         """
         cmd = 'sw_interface_slave_dump'

-        cmd_reply = 'sw_interface_slave_details'

         args = dict(sw_if_index=Topology.get_interface_sw_index(
             node, interface))
         err_msg = 'Failed to get slave dump on host {host}'.format(
             host=node['host'])
 
         args = dict(sw_if_index=Topology.get_interface_sw_index(
             node, interface))
         err_msg = 'Failed to get slave dump on host {host}'.format(
             host=node['host'])
 

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd, **args).get_dump(err_msg)
-
-        papi_dump = papi_resp.reply[0]['api_reply']
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)

 
         def process_slave_dump(slave_dump):
             """Process slave dump.
 
         def process_slave_dump(slave_dump):
             """Process slave dump.


@@ -1278,25 +1235,25 @@ class InterfaceUtil(object):
                 rstrip('\x00')
             return slave_dump
 
                 rstrip('\x00')
             return slave_dump
 

-        data = list()
-        for item in papi_dump:
-            data.append(process_slave_dump(item[cmd_reply]))
+        for slave_dump in details:
+            # In-place edits.
+            process_slave_dump(slave_dump)

 
 

-        logger.debug('Slave data:\n{slave_data}'.format(slave_data=data))
-        return data
+        logger.debug('Slave data:\n{slave_data}'.format(slave_data=details))
+        return details

 
     @staticmethod
 
     @staticmethod

-    def vpp_show_bond_data_on_all_nodes(nodes, details=False):
+    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.
         """Show (detailed) bond information on all VPP nodes in DICT__nodes.
 
         :param nodes: Nodes in the topology.

-        :param details: If detailed information is required or not.
+        :param verbose: If detailed information is required or not.

         :type nodes: dict
         :type nodes: dict

-        :type details: bool
+        :type verbose: bool

         """
         for node_data in nodes.values():
             if node_data['type'] == NodeType.DUT:
         """
         for node_data in nodes.values():
             if node_data['type'] == NodeType.DUT:

-                InterfaceUtil.vpp_show_bond_data_on_node(node_data, details)
+                InterfaceUtil.vpp_show_bond_data_on_node(node_data, verbose)

 
     @staticmethod
     def vpp_enable_input_acl_interface(node, interface, ip_version,
 
     @staticmethod
     def vpp_enable_input_acl_interface(node, interface, ip_version,


@@ -1324,9 +1281,8 @@ class InterfaceUtil(object):
             is_add=1)
         err_msg = 'Failed to enable input acl on interface {ifc}'.format(
             ifc=interface)
             is_add=1)
         err_msg = 'Failed to enable input acl on interface {ifc}'.format(
             ifc=interface)

-        with PapiExecutor(node) as papi_exec:
-            papi_exec.add(cmd, **args).get_replies(err_msg).\
-                verify_reply(err_msg=err_msg)
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)

 
     @staticmethod
     def get_interface_classify_table(node, interface):
 
     @staticmethod
     def get_interface_classify_table(node, interface):


@@ -1350,11 +1306,10 @@ class InterfaceUtil(object):
         args = dict(sw_if_index=sw_if_index)
         err_msg = 'Failed to get classify table name by interface {ifc}'.format(
             ifc=interface)
         args = dict(sw_if_index=sw_if_index)
         err_msg = 'Failed to get classify table name by interface {ifc}'.format(
             ifc=interface)

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd, **args).get_replies(err_msg). \
-                verify_reply(err_msg=err_msg)
+        with PapiSocketExecutor(node) as papi_exec:
+            reply = papi_exec.add(cmd, **args).get_reply(err_msg)

 
 

-        return papi_resp
+        return reply

 
     @staticmethod
     def get_sw_if_index(node, interface_name):
 
     @staticmethod
     def get_sw_if_index(node, interface_name):


@@ -1392,14 +1347,11 @@ class InterfaceUtil(object):
             sw_if_index = int(Constants.BITWISE_NON_ZERO)
 
         cmd = 'vxlan_gpe_tunnel_dump'
             sw_if_index = int(Constants.BITWISE_NON_ZERO)
 
         cmd = 'vxlan_gpe_tunnel_dump'

-        cmd_reply = 'vxlan_gpe_tunnel_details'

         args = dict(sw_if_index=sw_if_index)
         err_msg = 'Failed to get VXLAN-GPE dump on host {host}'.format(
             host=node['host'])
         args = dict(sw_if_index=sw_if_index)
         err_msg = 'Failed to get VXLAN-GPE dump on host {host}'.format(
             host=node['host'])

-        with PapiExecutor(node) as papi_exec:
-            papi_resp = papi_exec.add(cmd, **args).get_dump(err_msg)
-
-        papi_vxlan_dump = papi_resp.reply[0]['api_reply']
+        with PapiSocketExecutor(node) as papi_exec:
+            details = papi_exec.add(cmd, **args).get_details(err_msg)

 
         def process_vxlan_gpe_dump(vxlan_dump):
             """Process vxlan_gpe dump.
 
         def process_vxlan_gpe_dump(vxlan_dump):
             """Process vxlan_gpe dump.


@@ -1422,11 +1374,11 @@ class InterfaceUtil(object):
             return vxlan_dump
 
         data = list() if interface_name is None else dict()
             return vxlan_dump
 
         data = list() if interface_name is None else dict()

-        for item in papi_vxlan_dump:
+        for vxlan_dump in details:

             if interface_name is None:
             if interface_name is None:

-                data.append(process_vxlan_gpe_dump(item[cmd_reply]))
-            elif item[cmd_reply]['sw_if_index'] == sw_if_index:
-                data = process_vxlan_gpe_dump(item[cmd_reply])
+                data.append(process_vxlan_gpe_dump(vxlan_dump))
+            elif vxlan_dump['sw_if_index'] == sw_if_index:
+                data = process_vxlan_gpe_dump(vxlan_dump)

                 break
 
         logger.debug('VXLAN-GPE data:\n{vxlan_gpe_data}'.format(
                 break
 
         logger.debug('VXLAN-GPE data:\n{vxlan_gpe_data}'.format(


@@ -1453,9 +1405,8 @@ class InterfaceUtil(object):
             vrf_id=int(table_id))
         err_msg = 'Failed to assign interface {ifc} to FIB table'.format(
             ifc=interface)
             vrf_id=int(table_id))
         err_msg = 'Failed to assign interface {ifc} to FIB table'.format(
             ifc=interface)

-        with PapiExecutor(node) as papi_exec:
-            papi_exec.add(cmd, **args).get_replies(err_msg). \
-                verify_reply(err_msg=err_msg)
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)

 
     @staticmethod
     def set_linux_interface_mac(node, interface, mac, namespace=None,
 
     @staticmethod
     def set_linux_interface_mac(node, interface, mac, namespace=None,


@@ -1543,9 +1494,6 @@ class InterfaceUtil(object):
         :rtype: list
         :raises RuntimeError: If a reason preventing initialization is found.
         """
         :rtype: list
         :raises RuntimeError: If a reason preventing initialization is found.
         """

-        ssh = SSH()
-        ssh.connect(node)
-

         # 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(":")
         # 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(":")


@@ -1603,283 +1551,6 @@ class InterfaceUtil(object):
 
         return vf_ifc_keys
 
 
         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
-        """
-        try:
-            src_address_start = IPv6Address(unicode(src_ip_start))
-            dst_address_start = IPv6Address(unicode(dst_ip_start))
-            ip_address_limit = IPv6Address(unicode(ip_limit))
-            af_inet = AF_INET6
-            is_ipv6 = 1
-        except (AddressValueError, NetmaskValueError):
-            src_address_start = IPv4Address(unicode(src_ip_start))
-            dst_address_start = IPv4Address(unicode(dst_ip_start))
-            ip_address_limit = IPv4Address(unicode(ip_limit))
-            af_inet = AF_INET
-            is_ipv6 = 0
-
-        with PapiExecutor(node) as papi_exec:
-            for i in xrange(0, vxlan_count):
-                src_ip = src_address_start + i * ip_step
-                dst_ip = dst_address_start + i * ip_step
-                if src_ip > ip_address_limit or dst_ip > ip_address_limit:
-                    logger.warn("Can't do more iterations - IP address limit "
-                                "has been reached.")
-                    vxlan_count = i
-                    break
-                cmd = 'sw_interface_add_del_address'
-                args = dict(
-                    sw_if_index=InterfaceUtil.get_interface_index(
-                        node, node_vxlan_if),
-                    is_add=1,
-                    is_ipv6=0,
-                    del_all=0,
-                    address_length=128 if is_ipv6 else 32,
-                    address=inet_pton(af_inet, str(src_ip)))
-                papi_exec.add(cmd, **args)
-                cmd = 'vxlan_add_del_tunnel'
-                args = dict(
-                    is_add=1,
-                    is_ipv6=0,
-                    instance=Constants.BITWISE_NON_ZERO,
-                    src_address=inet_pton(af_inet, str(src_ip)),
-                    dst_address=inet_pton(af_inet, str(dst_ip)),
-                    mcast_sw_if_index=Constants.BITWISE_NON_ZERO,
-                    encap_vrf_id=0,
-                    decap_next_index=Constants.BITWISE_NON_ZERO,
-                    vni=int(vni_start)+i)
-                papi_exec.add(cmd, **args)
-                cmd = 'create_vlan_subif'
-                args = dict(
-                    sw_if_index=InterfaceUtil.get_interface_index(
-                        node, node_vlan_if),
-                    vlan_id=i+1)
-                papi_exec.add(cmd, **args)
-            papi_exec.get_replies().verify_replies()
-
-        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
-        """
-        if_data = InterfaceUtil.vpp_get_interface_data(node)
-
-        with PapiExecutor(node) as papi_exec:
-            for i in xrange(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 not vxlan_found \
-                            and data['interface_name'] == vxlan_subif_name:
-                        vxlan_subif_idx = data['sw_if_index']
-                        vxlan_found = True
-                    elif not vlan_found \
-                            and data['interface_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)
-                cmd = 'sw_interface_set_flags'
-                args1 = dict(sw_if_index=vxlan_subif_idx,
-                             admin_up_down=1)
-                Topology.update_interface_sw_if_index(
-                    node, vlan_subif_key, vlan_idx)
-                Topology.update_interface_name(
-                    node, vlan_subif_key, vlan_subif_name)
-                args2 = dict(sw_if_index=vlan_idx,
-                             admin_up_down=1)
-                papi_exec.add(cmd, **args1).add(cmd, **args2)
-            papi_exec.get_replies().verify_replies()
-
-    @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
-        """
-        try:
-            dst_address_start = IPv6Address(unicode(dst_ip_start))
-            af_inet = AF_INET6
-            is_ipv6 = 1
-        except (AddressValueError, NetmaskValueError):
-            dst_address_start = IPv4Address(unicode(dst_ip_start))
-            af_inet = AF_INET
-            is_ipv6 = 0
-
-        with PapiExecutor(node) as papi_exec:
-            for i in xrange(0, vxlan_count):
-                dst_ip = dst_address_start + i * ip_step
-                neighbor = dict(
-                    sw_if_index=Topology.get_interface_sw_index(
-                        node, node_vxlan_if),
-                    flags=0,
-                    mac_address=str(
-                        Topology.get_interface_mac(op_node, op_node_if)),
-                    ip_address=str(dst_ip))
-                cmd = 'ip_neighbor_add_del'
-                args = dict(
-                    is_add=1,
-                    neighbor=neighbor)
-                papi_exec.add(cmd, **args)
-                cmd = 'ip_add_del_route'
-                args = dict(
-                    next_hop_sw_if_index=Topology.get_interface_sw_index(
-                        node, node_vxlan_if),
-                    table_id=0,
-                    is_add=1,
-                    is_ipv6=is_ipv6,
-                    next_hop_weight=1,
-                    next_hop_proto=1 if is_ipv6 else 0,
-                    dst_address_length=128 if is_ipv6 else 32,
-                    dst_address=inet_pton(af_inet, str(dst_ip)),
-                    next_hop_address=inet_pton(af_inet, str(dst_ip)))
-                papi_exec.add(cmd, **args)
-                cmd = 'sw_interface_set_l2_bridge'
-                args = dict(
-                    rx_sw_if_index=Topology.get_interface_sw_index(
-                        node, 'vxlan_tunnel{nr}'.format(nr=i+1)),
-                    bd_id=int(bd_id_start+i),
-                    shg=0,
-                    port_type=0,
-                    enable=1)
-                papi_exec.add(cmd, **args)
-                args = dict(
-                    rx_sw_if_index=Topology.get_interface_sw_index(
-                        node, 'vlan_subif{nr}'.format(nr=i+1)),
-                    bd_id=int(bd_id_start+i),
-                    shg=0,
-                    port_type=0,
-                    enable=1)
-                papi_exec.add(cmd, **args)
-            papi_exec.get_replies().verify_replies()
-

     @staticmethod
     def vpp_sw_interface_rx_placement_dump(node):
         """Dump VPP interface RX placement on node.
     @staticmethod
     def vpp_sw_interface_rx_placement_dump(node):
         """Dump VPP interface RX placement on node.


@@ -1890,17 +1561,14 @@ class InterfaceUtil(object):
         :rtype: list
         """
         cmd = 'sw_interface_rx_placement_dump'
         :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'])
         err_msg = "Failed to run '{cmd}' PAPI command on host {host}!".format(
             cmd=cmd, host=node['host'])

-        with PapiExecutor(node) as papi_exec:
+        with PapiSocketExecutor(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'])
             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'])
+            details = papi_exec.get_details(err_msg)
+        return sorted(details, key=lambda k: k['sw_if_index'])

 
     @staticmethod
     def vpp_sw_interface_set_rx_placement(node, sw_if_index, queue_id,
 
     @staticmethod
     def vpp_sw_interface_set_rx_placement(node, sw_if_index, queue_id,


@@ -1923,9 +1591,8 @@ class InterfaceUtil(object):
                   "{host}!".format(host=node['host'])
         args = dict(sw_if_index=sw_if_index, queue_id=queue_id,
                     worker_id=worker_id)
                   "{host}!".format(host=node['host'])
         args = dict(sw_if_index=sw_if_index, queue_id=queue_id,
                     worker_id=worker_id)

-        with PapiExecutor(node) as papi_exec:
-            papi_exec.add(cmd, **args).get_replies(err_msg).\
-                verify_reply(err_msg=err_msg)
+        with PapiSocketExecutor(node) as papi_exec:
+            papi_exec.add(cmd, **args).get_reply(err_msg)

 
     @staticmethod
     def vpp_round_robin_rx_placement(node, prefix):
 
     @staticmethod
     def vpp_round_robin_rx_placement(node, prefix):


@@ -1939,6 +1606,8 @@ class InterfaceUtil(object):
         """
         worker_id = 0
         worker_cnt = len(VPPUtil.vpp_show_threads(node)) - 1
         """
         worker_id = 0
         worker_cnt = len(VPPUtil.vpp_show_threads(node)) - 1

+        if not worker_cnt:
+            return

         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'] \
         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'] \