X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FVppConfigGenerator.py;h=437386d81d165900c65c6245ffe9d021bbe0f60b;hp=154e2e9095f07c8ec3118d2106a4457363036718;hb=HEAD;hpb=da799981f5373b09398319df12e77e2efc75caa6

diff --git a/resources/libraries/python/VppConfigGenerator.py b/resources/libraries/python/VppConfigGenerator.py
index 154e2e9095..4191c0eed2 100644
--- a/resources/libraries/python/VppConfigGenerator.py
+++ b/resources/libraries/python/VppConfigGenerator.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2024 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:
@@ -14,15 +14,14 @@
 """VPP Configuration File Generator library."""
 
 import re
-import time
 
-from resources.libraries.python.ssh import SSH
 from resources.libraries.python.Constants import Constants
-from resources.libraries.python.DUTSetup import DUTSetup
+from resources.libraries.python.ssh import exec_cmd_no_error
 from resources.libraries.python.topology import NodeType
 from resources.libraries.python.topology import Topology
+from resources.libraries.python.VPPUtil import VPPUtil
 
-__all__ = ['VppConfigGenerator']
+__all__ = ["VppConfigGenerator", "VppInitConfig"]
 
 
 def pci_dev_check(pci_dev):
@@ -34,64 +33,49 @@ def pci_dev_check(pci_dev):
     :rtype: bool
     :raises ValueError: If PCI address is in incorrect format.
     """
-    pattern = re.compile("^[0-9A-Fa-f]{4}:[0-9A-Fa-f]{2}:"
-                         "[0-9A-Fa-f]{2}\\.[0-9A-Fa-f]$")
-    if not pattern.match(pci_dev):
-        raise ValueError('PCI address {addr} is not in valid format '
-                         'xxxx:xx:xx.x'.format(addr=pci_dev))
+    pattern = re.compile(
+        r"^[0-9A-Fa-f]{4}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}\.[0-9A-Fa-f]$"
+    )
+    if not re.match(pattern, pci_dev):
+        raise ValueError(
+            f"PCI address {pci_dev} is not in valid format xxxx:xx:xx.x"
+        )
     return True
 
 
-class VppConfigGenerator(object):
+class VppConfigGenerator:
     """VPP Configuration File Generator."""
 
     def __init__(self):
         """Initialize library."""
         # VPP Node to apply configuration on
-        self._node = ''
-        # VPP Hostname
-        self._hostname = ''
+        self._node = ""
+        # Topology node key
+        self._node_key = ""
         # VPP Configuration
-        self._nodeconfig = {}
+        self._nodeconfig = dict()
         # Serialized VPP Configuration
-        self._vpp_config = ''
+        self._vpp_config = ""
         # VPP Service name
-        self._vpp_service_name = 'vpp'
-        # VPP Logfile location
-        self._vpp_logfile = '/tmp/vpe.log'
+        self._vpp_service_name = "vpp"
         # VPP Startup config location
-        self._vpp_startup_conf = '/etc/vpp/startup.conf'
-        # VPP Startup config backup location
-        self._vpp_startup_conf_backup = None
+        self._vpp_startup_conf = "/etc/vpp/startup.conf"
 
-    def set_node(self, node):
+    def set_node(self, node, node_key=None):
         """Set DUT node.
 
         :param node: Node to store configuration on.
+        :param node_key: Topology node key.
         :type node: dict
+        :type node_key: str
         :raises RuntimeError: If Node type is not DUT.
         """
-        if node['type'] != NodeType.DUT:
-            raise RuntimeError('Startup config can only be applied to DUT'
-                               'node.')
+        if node["type"] != NodeType.DUT:
+            raise RuntimeError(
+                "Startup config can only be applied to DUTnode."
+            )
         self._node = node
-        self._hostname = Topology.get_node_hostname(node)
-
-    def set_vpp_logfile(self, logfile):
-        """Set VPP logfile location.
-
-        :param logfile: VPP logfile location.
-        :type logfile: str
-        """
-        self._vpp_logfile = logfile
-
-    def set_vpp_startup_conf_backup(self, backup='/etc/vpp/startup.backup'):
-        """Set VPP startup configuration backup.
-
-        :param backup: VPP logfile location.
-        :type backup: str
-        """
-        self._vpp_startup_conf_backup = backup
+        self._node_key = node_key
 
     def get_config_str(self):
         """Get dumped startup configuration in VPP config format.
@@ -116,10 +100,10 @@ class VppConfigGenerator(object):
             config[path[0]] = value
             return
         if path[0] not in config:
-            config[path[0]] = {}
+            config[path[0]] = dict()
         elif isinstance(config[path[0]], str):
-            config[path[0]] = {} if config[path[0]] == '' \
-                else {config[path[0]]: ''}
+            config[path[0]] = dict() if config[path[0]] == "" \
+                else {config[path[0]]: ""}
         self.add_config_item(config[path[0]], value, path[1:])
 
     def dump_config(self, obj, level=-1):
@@ -131,93 +115,140 @@ class VppConfigGenerator(object):
         :type level: int
         :returns: nothing
         """
-        indent = '  '
+        indent = "  "
         if level >= 0:
-            self._vpp_config += '{}{{\n'.format((level) * indent)
+            self._vpp_config += f"{level * indent}{{\n"
         if isinstance(obj, dict):
             for key, val in obj.items():
-                if hasattr(val, '__iter__'):
-                    self._vpp_config += '{}{}\n'.format((level + 1) * indent,
-                                                        key)
+                if hasattr(val, u"__iter__") and not isinstance(val, str):
+                    self._vpp_config += f"{(level + 1) * indent}{key}\n"
                     self.dump_config(val, level + 1)
                 else:
-                    self._vpp_config += '{}{} {}\n'.format((level + 1) * indent,
-                                                           key, val)
+                    self._vpp_config += f"{(level + 1) * indent}{key} {val}\n"
         else:
             for val in obj:
-                self._vpp_config += '{}{}\n'.format((level + 1) * indent, val)
+                self._vpp_config += f"{(level + 1) * indent}{val}\n"
         if level >= 0:
-            self._vpp_config += '{}}}\n'.format(level * indent)
+            self._vpp_config += f"{level * indent}}}\n"
 
-    def add_unix_log(self, value=None):
+    def add_unix_log(self, value="/var/log/vpp/vpp.log"):
         """Add UNIX log configuration.
 
         :param value: Log file.
         :type value: str
         """
-        path = ['unix', 'log']
-        if value is None:
-            value = self._vpp_logfile
+        path = ["unix", "log"]
         self.add_config_item(self._nodeconfig, value, path)
 
-    def add_unix_cli_listen(self, value='/run/vpp/cli.sock'):
+    def add_unix_cli_listen(self, value="/run/vpp/cli.sock"):
         """Add UNIX cli-listen configuration.
 
         :param value: CLI listen address and port or path to CLI socket.
         :type value: str
         """
-        path = ['unix', 'cli-listen']
+        path = ["unix", "cli-listen"]
         self.add_config_item(self._nodeconfig, value, path)
 
-    def add_unix_gid(self, value='vpp'):
+    def add_unix_cli_no_pager(self):
+        """Add UNIX cli-no-pager configuration."""
+        path = ["unix", "cli-no-pager"]
+        self.add_config_item(self._nodeconfig, "", path)
+
+    def add_unix_gid(self, value="vpp"):
         """Add UNIX gid configuration.
 
         :param value: Gid.
         :type value: str
         """
-        path = ['unix', 'gid']
+        path = ["unix", "gid"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_unix_nodaemon(self):
         """Add UNIX nodaemon configuration."""
-        path = ['unix', 'nodaemon']
-        self.add_config_item(self._nodeconfig, '', path)
+        path = ["unix", "nodaemon"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_unix_coredump(self):
         """Add UNIX full-coredump configuration."""
-        path = ['unix', 'full-coredump']
-        self.add_config_item(self._nodeconfig, '', path)
+        path = ["unix", "full-coredump"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_unix_exec(self, value):
         """Add UNIX exec configuration."""
-        path = ['unix', 'exec']
+        path = ["unix", "exec"]
         self.add_config_item(self._nodeconfig, value, path)
 
-    def add_api_segment_gid(self, value='vpp'):
-        """Add API-SEGMENT gid configuration.
+    def add_socksvr(self, socket=Constants.SOCKSVR_PATH):
+        """Add socksvr configuration."""
+        path = ["socksvr", "socket-name"]
+        self.add_config_item(self._nodeconfig, socket, path)
+
+    def add_graph_node_variant(self, variant=Constants.GRAPH_NODE_VARIANT):
+        """Add default graph node variant.
+
+        :param value: Graph node variant default value.
+        :type value: str
+        """
+        if variant == "":
+            return
+        variant_list = ["hsw", "skx", "icl"]
+        if variant not in variant_list:
+            raise ValueError("Invalid graph node variant value")
+        path = ["node", "default", "variant"]
+        self.add_config_item(self._nodeconfig, variant, path)
+
+    def add_api_segment_gid(self, value="vpp"):
+        """Add api-segment gid configuration.
 
         :param value: Gid.
         :type value: str
         """
-        path = ['api-segment', 'gid']
+        path = ["api-segment", "gid"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_api_segment_global_size(self, value):
-        """Add API-SEGMENT global-size configuration.
+        """Add api-segment global-size configuration.
 
         :param value: Global size.
         :type value: str
         """
-        path = ['api-segment', 'global-size']
+        path = ["api-segment", "global-size"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_api_segment_prefix(self, value="vpp"):
+        """Add api-segment prefix configuration.
+
+        :param value: Gid.
+        :type value: str
+        """
+        path = ["api-segment", "prefix"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_api_segment_api_size(self, value):
-        """Add API-SEGMENT api-size configuration.
+        """Add api-segment api-size configuration.
 
         :param value: API size.
         :type value: str
         """
-        path = ['api-segment', 'api-size']
+        path = ["api-segment", "api-size"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_buffers_per_numa(self, value):
+        """Increase number of buffers allocated.
+
+        :param value: Number of buffers allocated.
+        :type value: int
+        """
+        path = ["buffers", "buffers-per-numa"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_buffers_default_data_size(self, value):
+        """Increase buffers data-size allocated.
+
+        :param value: Buffers data-size allocated.
+        :type value: int
+        """
+        path = ["buffers", "default data-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_dev(self, *devices):
@@ -228,36 +259,26 @@ class VppConfigGenerator(object):
         """
         for device in devices:
             if pci_dev_check(device):
-                path = ['dpdk', 'dev {0}'.format(device)]
-                self.add_config_item(self._nodeconfig, '', path)
-
-    def add_dpdk_dev_parameter(self, device, parameter, value):
-        """Add parameter for DPDK device.
+                path = ["dpdk", f"dev {device}"]
+                self.add_config_item(self._nodeconfig, "", path)
 
-        :param device: PCI device (format xxxx:xx:xx.x).
-        :param parameter: Parameter name.
-        :param value: Parameter value.
-        :type device: str
-        :type parameter: str
-        :type value: str
-        """
-        if pci_dev_check(device):
-            path = ['dpdk', 'dev {0}'.format(device), parameter]
-            self.add_config_item(self._nodeconfig, value, path)
-
-    def add_dpdk_cryptodev(self, count):
+    def add_dpdk_cryptodev(self, count, num_rx_queues=1):
         """Add DPDK Crypto PCI device configuration.
 
         :param count: Number of HW crypto devices to add.
+        :param num_rx_queues: Number of RX queues per QAT interface.
         :type count: int
-        """
-        cryptodev = Topology.get_cryptodev(self._node)
-        for i in range(count):
-            cryptodev_config = 'dev {0}'.format(
-                re.sub(r'\d.\d$', '1.'+str(i), cryptodev))
-            path = ['dpdk', cryptodev_config]
-            self.add_config_item(self._nodeconfig, '', path)
-        self.add_dpdk_uio_driver('igb_uio')
+        :type num_rx_queues: int
+        """
+        cryptodevs = Topology.get_cryptodev(self._node)
+        for device in cryptodevs.values():
+            for i in range(int(count/len(cryptodevs))):
+                numvfs = device["numvfs"]
+                computed = f"{(i+1)//numvfs}.{(i+1)%numvfs}"
+                addr = re.sub(r"\d.\d$", computed, device["pci_address"])
+                path = ["dpdk", f"dev {addr}", "num-rx-queues"]
+                self.add_config_item(self._nodeconfig, num_rx_queues, path)
+        self.add_dpdk_uio_driver("vfio-pci")
 
     def add_dpdk_sw_cryptodev(self, sw_pmd_type, socket_id, count):
         """Add DPDK SW Crypto device configuration.
@@ -270,33 +291,10 @@ class VppConfigGenerator(object):
         :type count: int
         """
         for _ in range(count):
-            cryptodev_config = 'vdev cryptodev_{0}_pmd,socket_id={1}'.\
-                format(sw_pmd_type, str(socket_id))
-            path = ['dpdk', cryptodev_config]
-            self.add_config_item(self._nodeconfig, '', path)
-
-    def add_dpdk_eth_bond_dev(self, ethbond_id, mode, xmit_policy, *slaves):
-        """Add DPDK Eth_bond device configuration.
-
-        :param ethbond_id: Eth_bond device ID.
-        :param mode: Link bonding mode.
-        :param xmit_policy: Transmission policy.
-        :param slaves: PCI device(s) to be bonded (format xxxx:xx:xx.x).
-        :type ethbond_id: str or int
-        :type mode: str or int
-        :type xmit_policy: str
-        :type slaves: list
-        """
-        slaves_config = ',slave=' + \
-                        ',slave='.join(slave if pci_dev_check(slave) else ''
-                                       for slave in slaves)
-        ethbond_config = 'vdev eth_bond{id},mode={mode}{slaves},' \
-                         'xmit_policy={xmit_pol}'.format(id=ethbond_id,
-                                                         mode=mode,
-                                                         slaves=slaves_config,
-                                                         xmit_pol=xmit_policy)
-        path = ['dpdk', ethbond_config]
-        self.add_config_item(self._nodeconfig, '', path)
+            cryptodev_config = f"vdev cryptodev_{sw_pmd_type}_pmd," \
+                f"socket_id={str(socket_id)}"
+            path = ["dpdk", cryptodev_config]
+            self.add_config_item(self._nodeconfig, "", path)
 
     def add_dpdk_dev_default_rxq(self, value):
         """Add DPDK dev default rxq configuration.
@@ -304,7 +302,7 @@ class VppConfigGenerator(object):
         :param value: Default number of rxqs.
         :type value: str
         """
-        path = ['dpdk', 'dev default', 'num-rx-queues']
+        path = ["dpdk", "dev default", "num-rx-queues"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_dev_default_txq(self, value):
@@ -313,7 +311,7 @@ class VppConfigGenerator(object):
         :param value: Default number of txqs.
         :type value: str
         """
-        path = ['dpdk', 'dev default', 'num-tx-queues']
+        path = ["dpdk", "dev default", "num-tx-queues"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_dev_default_rxd(self, value):
@@ -322,7 +320,7 @@ class VppConfigGenerator(object):
         :param value: Default number of rxds.
         :type value: str
         """
-        path = ['dpdk', 'dev default', 'num-rx-desc']
+        path = ["dpdk", "dev default", "num-rx-desc"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_dev_default_txd(self, value):
@@ -331,52 +329,69 @@ class VppConfigGenerator(object):
         :param value: Default number of txds.
         :type value: str
         """
-        path = ['dpdk', 'dev default', 'num-tx-desc']
+        path = ["dpdk", "dev default", "num-tx-desc"]
         self.add_config_item(self._nodeconfig, value, path)
 
+    def add_dpdk_dev_default_tso(self):
+        """Add DPDK dev default tso configuration."""
+        path = [u"dpdk", u"dev default", u"tso"]
+        self.add_config_item(self._nodeconfig, "on", path)
+
     def add_dpdk_log_level(self, value):
         """Add DPDK log-level configuration.
 
         :param value: Log level.
         :type value: str
         """
-        path = ['dpdk', 'log-level']
-        self.add_config_item(self._nodeconfig, value, path)
-
-    def add_dpdk_num_mbufs(self, value):
-        """Add DPDK number of I/O buffers.
-
-        :param value: Number of I/O buffers.
-        :type value: int
-        """
-        path = ['dpdk', 'num-mbufs']
+        path = ["dpdk", "log-level"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_no_pci(self):
         """Add DPDK no-pci."""
-        path = ['dpdk', 'no-pci']
-        self.add_config_item(self._nodeconfig, '', path)
+        path = ["dpdk", "no-pci"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_dpdk_uio_driver(self, value=None):
         """Add DPDK uio-driver configuration.
 
         :param value: DPDK uio-driver configuration. By default, driver will be
-                      loaded automatically from Topology file, still leaving
-                      option to manually override by parameter.
+            loaded automatically from Topology file, still leaving option
+            to manually override by parameter.
         :type value: str
         """
         if value is None:
             value = Topology.get_uio_driver(self._node)
-        path = ['dpdk', 'uio-driver']
+        path = ["dpdk", "uio-driver"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_dpdk_max_simd_bitwidth(self, variant=Constants.GRAPH_NODE_VARIANT):
+        """Add DPDK max-simd-bitwidth configuration.
+
+        :param value: Graph node variant default value.
+        :type value: str
+        """
+        if variant == "icl":
+            value = 512
+        elif variant in ["skx", "hsw"]:
+            value = 256
+        else:
+            return
+
+        path = ["dpdk", "max-simd-bitwidth"]
         self.add_config_item(self._nodeconfig, value, path)
 
+    def add_dpdk_enable_tcp_udp_checksum(self):
+        """Add DPDK enable-tcp-udp-checksum configuration."""
+        path = [u"dpdk", u"enable-tcp-udp-checksum"]
+        self.add_config_item(self._nodeconfig, u"", path)
+
     def add_cpu_main_core(self, value):
         """Add CPU main core configuration.
 
         :param value: Main core option.
         :type value: str
         """
-        path = ['cpu', 'main-core']
+        path = ["cpu", "main-core"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_cpu_corelist_workers(self, value):
@@ -385,22 +400,40 @@ class VppConfigGenerator(object):
         :param value: Corelist-workers option.
         :type value: str
         """
-        path = ['cpu', 'corelist-workers']
+        path = ["cpu", "corelist-workers"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_main_heap_size(self, value):
+        """Add Main Heap Size configuration.
+
+        :param value: Amount of heap.
+        :type value: str
+        """
+        path = ["memory", "main-heap-size"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_main_heap_page_size(self, value):
+        """Add Main Heap Page Size configuration.
+
+        :param value: Heap page size.
+        :type value: str
+        """
+        path = ["memory", "main-heap-page-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
-    def add_heapsize(self, value):
-        """Add Heapsize configuration.
+    def add_default_hugepage_size(self, value=Constants.DEFAULT_HUGEPAGE_SIZE):
+        """Add Default Hugepage Size configuration.
 
-        :param value: Amount of heapsize.
+        :param value: Hugepage size.
         :type value: str
         """
-        path = ['heapsize']
+        path = ["memory", "default-hugepage-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_api_trace(self):
         """Add API trace configuration."""
-        path = ['api-trace', 'on']
-        self.add_config_item(self._nodeconfig, '', path)
+        path = ["api-trace", "on"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_ip6_hash_buckets(self, value):
         """Add IP6 hash buckets configuration.
@@ -408,7 +441,7 @@ class VppConfigGenerator(object):
         :param value: Number of IP6 hash buckets.
         :type value: str
         """
-        path = ['ip6', 'hash-buckets']
+        path = ["ip6", "hash-buckets"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_ip6_heap_size(self, value):
@@ -417,25 +450,79 @@ class VppConfigGenerator(object):
         :param value: IP6 Heapsize amount.
         :type value: str
         """
-        path = ['ip6', 'heap-size']
+        path = ["ip6", "heap-size"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_ipsec_spd_flow_cache_ipv4_inbound(self, value):
+        """Add IPsec spd flow cache for IP4 inbound.
+
+        :param value: "on" to enable spd flow cache.
+        :type value: str
+        """
+        path = ["ipsec", "ipv4-inbound-spd-flow-cache"]
         self.add_config_item(self._nodeconfig, value, path)
 
-    def add_ip_heap_size(self, value):
-        """Add IP heap-size configuration.
+    def add_ipsec_spd_flow_cache_ipv4_outbound(self, value):
+        """Add IPsec spd flow cache for IP4 outbound.
 
-        :param value: IP Heapsize amount.
+        :param value: "on" to enable spd flow cache.
         :type value: str
         """
-        path = ['ip', 'heap-size']
+        path = ["ipsec", "ipv4-outbound-spd-flow-cache"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_ipsec_spd_fast_path_ipv4_inbound(self, value):
+        """Add IPsec spd fast path for IP4 inbound.
+
+        :param value: "on" to enable spd fast path.
+        :type value: str
+        """
+        path = [u"ipsec", u"ipv4-inbound-spd-fast-path"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_ipsec_spd_fast_path_ipv4_outbound(self, value):
+        """Add IPsec spd fast path for IP4 outbound.
+
+        :param value: "on" to enable spd fast path.
+        :type value: str
+        """
+        path = ["ipsec", "ipv4-outbound-spd-fast-path"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_ipsec_spd_fast_path_num_buckets(self, value):
+        """Add num buckets for IPsec spd fast path.
+
+        :param value: Number of buckets.
+        :type value: int
+        """
+        path = ["ipsec", "spd-fast-path-num-buckets"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_statseg_size(self, value):
-        """Add stats segment heap size configuration.
+        """Add Stats Heap Size configuration.
 
         :param value: Stats heapsize amount.
         :type value: str
         """
-        path = ['statseg', 'size']
+        path = ["statseg", "size"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_statseg_page_size(self, value):
+        """Add Stats Heap Page Size configuration.
+
+        :param value: Stats heapsize amount.
+        :type value: str
+        """
+        path = ["statseg", "page-size"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_statseg_per_node_counters(self, value):
+        """Add stats per-node-counters configuration.
+
+        :param value: "on" to switch the counters on.
+        :type value: str
+        """
+        path = ["statseg", "per-node-counters"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_plugin(self, state, *plugins):
@@ -447,26 +534,49 @@ class VppConfigGenerator(object):
         :type plugins: list
         """
         for plugin in plugins:
-            path = ['plugins', 'plugin {0}'.format(plugin), state]
-            self.add_config_item(self._nodeconfig, ' ', path)
+            path = ["plugins", f"plugin {plugin}", state]
+            self.add_config_item(self._nodeconfig, " ", path)
 
     def add_dpdk_no_multi_seg(self):
         """Add DPDK no-multi-seg configuration."""
-        path = ['dpdk', 'no-multi-seg']
-        self.add_config_item(self._nodeconfig, '', path)
+        path = ["dpdk", "no-multi-seg"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_dpdk_no_tx_checksum_offload(self):
         """Add DPDK no-tx-checksum-offload configuration."""
-        path = ['dpdk', 'no-tx-checksum-offload']
-        self.add_config_item(self._nodeconfig, '', path)
+        path = ["dpdk", "no-tx-checksum-offload"]
+        self.add_config_item(self._nodeconfig, "", path)
+
+    def add_nat(self, value="deterministic"):
+        """Add NAT mode configuration.
+
+        :param value: NAT mode.
+        :type value: str
+        """
+        path = ["nat", value]
+        self.add_config_item(self._nodeconfig, "", path)
 
-    def add_nat(self, value='deterministic'):
-        """Add NAT configuration.
+    def add_nat_max_translations_per_thread(self, value):
+        """Add NAT max. translations per thread number configuration.
 
         :param value: NAT mode.
         :type value: str
         """
-        path = ['nat']
+        path = ["nat", "max translations per thread"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_nsim_poll_main_thread(self):
+        """Add NSIM poll-main-thread configuration."""
+        path = ["nsim", "poll-main-thread"]
+        self.add_config_item(self._nodeconfig, "", path)
+
+    def add_tcp_congestion_control_algorithm(self, value="cubic"):
+        """Add TCP congestion control algorithm.
+
+        :param value: The congestion control algorithm to use. Example: cubic
+        :type value: str
+        """
+        path = ["tcp", "cc-algo"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_tcp_preallocated_connections(self, value):
@@ -475,7 +585,7 @@ class VppConfigGenerator(object):
         :param value: The number of pre-allocated connections.
         :type value: int
         """
-        path = ['tcp', 'preallocated-connections']
+        path = ["tcp", "preallocated-connections"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_tcp_preallocated_half_open_connections(self, value):
@@ -484,16 +594,45 @@ class VppConfigGenerator(object):
         :param value: The number of pre-allocated half open connections.
         :type value: int
         """
-        path = ['tcp', 'preallocated-half-open-connections']
+        path = ["tcp", "preallocated-half-open-connections"]
         self.add_config_item(self._nodeconfig, value, path)
 
+    def add_tcp_tso(self):
+        """Add TCP tso configuration."""
+        path = [u"tcp", u"tso"]
+        self.add_config_item(self._nodeconfig, u"", path)
+
+    def add_session_enable(self):
+        """Add session enable."""
+        path = ["session", "enable"]
+        self.add_config_item(self._nodeconfig, "", path)
+
+    def add_session_app_socket_api(self):
+        """Use session app socket api."""
+        path = ["session", "use-app-socket-api"]
+        self.add_config_item(self._nodeconfig, "", path)
+
+    def add_session_event_queues_memfd_segment(self):
+        """Add session event queue memfd segment."""
+        path = ["session", "evt_qs_memfd_seg"]
+        self.add_config_item(self._nodeconfig, "", path)
+
     def add_session_event_queue_length(self, value):
         """Add session event queue length.
 
         :param value: Session event queue length.
         :type value: int
         """
-        path = ['session', 'event-queue-length']
+        path = ["session", "event-queue-length"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_session_event_queues_segment_size(self, value):
+        """Add session event queue length.
+
+        :param value: Session event queue segment size.
+        :type value: str
+        """
+        path = ["session", "evt_qs_seg_size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_preallocated_sessions(self, value):
@@ -502,7 +641,7 @@ class VppConfigGenerator(object):
         :param value: Number of pre-allocated sessions.
         :type value: int
         """
-        path = ['session', 'preallocated-sessions']
+        path = ["session", "preallocated-sessions"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_v4_session_table_buckets(self, value):
@@ -511,7 +650,7 @@ class VppConfigGenerator(object):
         :param value: Number of v4 session table buckets.
         :type value: int
         """
-        path = ['session', 'v4-session-table-buckets']
+        path = ["session", "v4-session-table-buckets"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_v4_session_table_memory(self, value):
@@ -520,7 +659,7 @@ class VppConfigGenerator(object):
         :param value: Size of v4 session table memory.
         :type value: str
         """
-        path = ['session', 'v4-session-table-memory']
+        path = ["session", "v4-session-table-memory"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_v4_halfopen_table_buckets(self, value):
@@ -529,7 +668,7 @@ class VppConfigGenerator(object):
         :param value: Number of v4 halfopen table buckets.
         :type value: int
         """
-        path = ['session', 'v4-halfopen-table-buckets']
+        path = ["session", "v4-halfopen-table-buckets"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_v4_halfopen_table_memory(self, value):
@@ -538,7 +677,7 @@ class VppConfigGenerator(object):
         :param value: Size of v4 halfopen table memory.
         :type value: str
         """
-        path = ['session', 'v4-halfopen-table-memory']
+        path = ["session", "v4-halfopen-table-memory"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_local_endpoints_table_buckets(self, value):
@@ -547,7 +686,7 @@ class VppConfigGenerator(object):
         :param value: Number of local endpoints table buckets.
         :type value: int
         """
-        path = ['session', 'local-endpoints-table-buckets']
+        path = ["session", "local-endpoints-table-buckets"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_local_endpoints_table_memory(self, value):
@@ -556,77 +695,102 @@ class VppConfigGenerator(object):
         :param value: Size of local endpoints table memory.
         :type value: str
         """
-        path = ['session', 'local-endpoints-table-memory']
+        path = ["session", "local-endpoints-table-memory"]
+        self.add_config_item(self._nodeconfig, value, path)
+
+    def add_session_use_dma(self):
+        """Add session use-dma configuration."""
+        path = [u"session", u"use-dma"]
+        self.add_config_item(self._nodeconfig, u"", path)
+
+    def add_dma_dev(self, devices):
+        """Add DMA devices configuration.
+
+        :param devices: DMA devices or work queues.
+        :type devices: list
+        """
+        for device in devices:
+            path = ["dsa", f"dev {device}"]
+            self.add_config_item(self._nodeconfig, "", path)
+
+    def add_logging_default_syslog_log_level(self, value="debug"):
+        """Add default logging level for syslog.
+
+        :param value: Log level.
+        :type value: str
+        """
+        path = ["logging", "default-syslog-log-level"]
         self.add_config_item(self._nodeconfig, value, path)
 
-    def apply_config(self, filename=None, retries=60, restart_vpp=True):
-        """Generate and apply VPP configuration for node.
+    def write_config(self, filename=None):
+        """Generate and write VPP startup configuration to file.
 
         Use data from calls to this class to form a startup.conf file and
-        replace /etc/vpp/startup.conf with it on node.
+        replace /etc/vpp/startup.conf with it on topology node.
 
         :param filename: Startup configuration file name.
-        :param retries: Number of times (default 60) to re-try waiting.
-        :param restart_vpp: Whether to restart VPP.
         :type filename: str
-        :type retries: int
-        :type restart_vpp: bool.
-        :raises RuntimeError: If writing config file failed or restart of VPP
-            failed or backup of VPP startup.conf failed.
         """
         self.dump_config(self._nodeconfig)
 
-        ssh = SSH()
-        ssh.connect(self._node)
-
         if filename is None:
             filename = self._vpp_startup_conf
 
-        if self._vpp_startup_conf_backup is not None:
-            ret, _, _ = \
-                ssh.exec_command('sudo cp {src} {dest}'.
-                                 format(src=self._vpp_startup_conf,
-                                        dest=self._vpp_startup_conf_backup))
-            if ret != 0:
-                raise RuntimeError('Backup of config file failed on node '
-                                   '{name}'.format(name=self._hostname))
-
-        ret, _, _ = \
-            ssh.exec_command('echo "{config}" | sudo tee {filename}'.
-                             format(config=self._vpp_config,
-                                    filename=filename))
-
-        if ret != 0:
-            raise RuntimeError('Writing config file failed to node {name}'.
-                               format(name=self._hostname))
-
-        if restart_vpp:
-            DUTSetup.start_service(self._node, Constants.VPP_UNIT)
-
-            # Sleep <waittime> seconds, up to <retry> times,
-            # and verify if VPP is running.
-            for _ in range(retries):
-                time.sleep(1)
-                ret, stdout, _ = \
-                    ssh.exec_command_sudo('vppctl show pci')
-                if ret == 0 and 'Connection refused' not in stdout:
-                    break
-            else:
-                raise RuntimeError('VPP failed to restart on node {name}'.
-                                   format(name=self._hostname))
-
-    def restore_config(self):
-        """Restore VPP startup.conf from backup.
-
-        :raises RuntimeError: When restoration of startup.conf file failed.
-        """
-
-        ssh = SSH()
-        ssh.connect(self._node)
-
-        ret, _, _ = ssh.exec_command('sudo cp {src} {dest}'.
-                                     format(src=self._vpp_startup_conf_backup,
-                                            dest=self._vpp_startup_conf))
-        if ret != 0:
-            raise RuntimeError('Restoration of config file failed on node '
-                               '{name}'.format(name=self._hostname))
+        cmd = f"echo \"{self._vpp_config}\" | sudo tee {filename}"
+        exec_cmd_no_error(
+            self._node, cmd, message="Writing config file failed!"
+        )
+
+    def apply_config(self, filename=None, verify_vpp=True):
+        """Generate and write VPP startup configuration to file and restart VPP.
+
+        Use data from calls to this class to form a startup.conf file and
+        replace /etc/vpp/startup.conf with it on topology node.
+
+        :param filename: Startup configuration file name.
+        :param verify_vpp: Verify VPP is running after restart.
+        :type filename: str
+        :type verify_vpp: bool
+        """
+        self.write_config(filename=filename)
+
+        VPPUtil.restart_vpp_service(self._node, self._node_key)
+        if verify_vpp:
+            VPPUtil.verify_vpp(self._node)
+
+
+class VppInitConfig:
+    """VPP Initial Configuration."""
+    @staticmethod
+    def init_vpp_startup_configuration_on_all_duts(nodes):
+        """Apply initial VPP startup configuration on all DUTs.
+
+        :param nodes: Nodes in the topology.
+        :type nodes: dict
+        """
+        huge_size = Constants.DEFAULT_HUGEPAGE_SIZE
+        for node in nodes.values():
+            if node["type"] == NodeType.DUT:
+                vpp_config = VppConfigGenerator()
+                vpp_config.set_node(node)
+                vpp_config.add_unix_log()
+                vpp_config.add_unix_cli_listen()
+                vpp_config.add_unix_cli_no_pager()
+                vpp_config.add_unix_gid()
+                vpp_config.add_unix_coredump()
+                vpp_config.add_socksvr(socket=Constants.SOCKSVR_PATH)
+                vpp_config.add_main_heap_size("2G")
+                vpp_config.add_main_heap_page_size(huge_size)
+                vpp_config.add_default_hugepage_size(huge_size)
+                vpp_config.add_statseg_size("2G")
+                vpp_config.add_statseg_page_size(huge_size)
+                vpp_config.add_statseg_per_node_counters("on")
+                vpp_config.add_plugin("disable", "default")
+                vpp_config.add_plugin("enable", "dpdk_plugin.so")
+                vpp_config.add_dpdk_dev(
+                    *[node["interfaces"][interface].get("pci_address") \
+                        for interface in node["interfaces"]]
+                )
+                vpp_config.add_ip6_hash_buckets(2000000)
+                vpp_config.add_ip6_heap_size("4G")
+                vpp_config.apply_config()