X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FVppConfigGenerator.py;fp=resources%2Flibraries%2Fpython%2FVppConfigGenerator.py;h=e23a8520da39105d1b66f56165ed302327efd069;hp=65a19b221174a898cbb936aaccc412a81259b6dd;hb=83dc3b1b116725fd8b76890df275f868d7414c30;hpb=c10dee4d03643120bc43483fa95cf50d407c7915

diff --git a/resources/libraries/python/VppConfigGenerator.py b/resources/libraries/python/VppConfigGenerator.py
index 65a19b2211..e23a8520da 100644
--- a/resources/libraries/python/VppConfigGenerator.py
+++ b/resources/libraries/python/VppConfigGenerator.py
@@ -49,17 +49,17 @@ class VppConfigGenerator:
     def __init__(self):
         """Initialize library."""
         # VPP Node to apply configuration on
-        self._node = u""
+        self._node = ""
         # Topology node key
-        self._node_key = u""
+        self._node_key = ""
         # VPP Configuration
         self._nodeconfig = dict()
         # Serialized VPP Configuration
-        self._vpp_config = u""
+        self._vpp_config = ""
         # VPP Service name
-        self._vpp_service_name = u"vpp"
+        self._vpp_service_name = "vpp"
         # VPP Startup config location
-        self._vpp_startup_conf = u"/etc/vpp/startup.conf"
+        self._vpp_startup_conf = "/etc/vpp/startup.conf"
 
     def set_node(self, node, node_key=None):
         """Set DUT node.
@@ -70,9 +70,9 @@ class VppConfigGenerator:
         :type node_key: str
         :raises RuntimeError: If Node type is not DUT.
         """
-        if node[u"type"] != NodeType.DUT:
+        if node["type"] != NodeType.DUT:
             raise RuntimeError(
-                u"Startup config can only be applied to DUTnode."
+                "Startup config can only be applied to DUTnode."
             )
         self._node = node
         self._node_key = node_key
@@ -102,8 +102,8 @@ class VppConfigGenerator:
         if path[0] not in config:
             config[path[0]] = dict()
         elif isinstance(config[path[0]], str):
-            config[path[0]] = dict() if config[path[0]] == u"" \
-                else {config[path[0]]: u""}
+            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):
@@ -115,7 +115,7 @@ class VppConfigGenerator:
         :type level: int
         :returns: nothing
         """
-        indent = u"  "
+        indent = "  "
         if level >= 0:
             self._vpp_config += f"{level * indent}{{\n"
         if isinstance(obj, dict):
@@ -137,50 +137,50 @@ class VppConfigGenerator:
         :param value: Log file.
         :type value: str
         """
-        path = [u"unix", u"log"]
+        path = ["unix", "log"]
         self.add_config_item(self._nodeconfig, value, path)
 
-    def add_unix_cli_listen(self, value=u"/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 = [u"unix", u"cli-listen"]
+        path = ["unix", "cli-listen"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_unix_cli_no_pager(self):
         """Add UNIX cli-no-pager configuration."""
-        path = [u"unix", u"cli-no-pager"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["unix", "cli-no-pager"]
+        self.add_config_item(self._nodeconfig, "", path)
 
-    def add_unix_gid(self, value=u"vpp"):
+    def add_unix_gid(self, value="vpp"):
         """Add UNIX gid configuration.
 
         :param value: Gid.
         :type value: str
         """
-        path = [u"unix", u"gid"]
+        path = ["unix", "gid"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_unix_nodaemon(self):
         """Add UNIX nodaemon configuration."""
-        path = [u"unix", u"nodaemon"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["unix", "nodaemon"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_unix_coredump(self):
         """Add UNIX full-coredump configuration."""
-        path = [u"unix", u"full-coredump"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["unix", "full-coredump"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_unix_exec(self, value):
         """Add UNIX exec configuration."""
-        path = [u"unix", u"exec"]
+        path = ["unix", "exec"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_socksvr(self, socket=Constants.SOCKSVR_PATH):
         """Add socksvr configuration."""
-        path = [u"socksvr", u"socket-name"]
+        path = ["socksvr", "socket-name"]
         self.add_config_item(self._nodeconfig, socket, path)
 
     def add_graph_node_variant(self, variant=Constants.GRAPH_NODE_VARIANT):
@@ -189,39 +189,48 @@ class VppConfigGenerator:
         :param value: Graph node variant default value.
         :type value: str
         """
-        if variant == u"":
+        if variant == "":
             return
-        variant_list = [u"hsw", u"skx", u"icl"]
+        variant_list = ["hsw", "skx", "icl"]
         if variant not in variant_list:
             raise ValueError("Invalid graph node variant value")
-        path = [u"node", u"default", u"variant"]
+        path = ["node", "default", "variant"]
         self.add_config_item(self._nodeconfig, variant, path)
 
-    def add_api_segment_gid(self, value=u"vpp"):
-        """Add API-SEGMENT gid configuration.
+    def add_api_segment_gid(self, value="vpp"):
+        """Add api-segment gid configuration.
 
         :param value: Gid.
         :type value: str
         """
-        path = [u"api-segment", u"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 = [u"api-segment", u"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 = [u"api-segment", u"api-size"]
+        path = ["api-segment", "api-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_buffers_per_numa(self, value):
@@ -230,7 +239,7 @@ class VppConfigGenerator:
         :param value: Number of buffers allocated.
         :type value: int
         """
-        path = [u"buffers", u"buffers-per-numa"]
+        path = ["buffers", "buffers-per-numa"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_buffers_default_data_size(self, value):
@@ -239,7 +248,7 @@ class VppConfigGenerator:
         :param value: Buffers data-size allocated.
         :type value: int
         """
-        path = [u"buffers", u"default data-size"]
+        path = ["buffers", "default data-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_dev(self, *devices):
@@ -250,8 +259,8 @@ class VppConfigGenerator:
         """
         for device in devices:
             if pci_dev_check(device):
-                path = [u"dpdk", f"dev {device}"]
-                self.add_config_item(self._nodeconfig, u"", path)
+                path = ["dpdk", f"dev {device}"]
+                self.add_config_item(self._nodeconfig, "", path)
 
     def add_dpdk_cryptodev(self, count, num_rx_queues=1):
         """Add DPDK Crypto PCI device configuration.
@@ -284,8 +293,8 @@ class VppConfigGenerator:
         for _ in range(count):
             cryptodev_config = f"vdev cryptodev_{sw_pmd_type}_pmd," \
                 f"socket_id={str(socket_id)}"
-            path = [u"dpdk", cryptodev_config]
-            self.add_config_item(self._nodeconfig, u"", path)
+            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.
@@ -293,7 +302,7 @@ class VppConfigGenerator:
         :param value: Default number of rxqs.
         :type value: str
         """
-        path = [u"dpdk", u"dev default", u"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):
@@ -302,7 +311,7 @@ class VppConfigGenerator:
         :param value: Default number of txqs.
         :type value: str
         """
-        path = [u"dpdk", u"dev default", u"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):
@@ -311,7 +320,7 @@ class VppConfigGenerator:
         :param value: Default number of rxds.
         :type value: str
         """
-        path = [u"dpdk", u"dev default", u"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):
@@ -320,7 +329,7 @@ class VppConfigGenerator:
         :param value: Default number of txds.
         :type value: str
         """
-        path = [u"dpdk", u"dev default", u"num-tx-desc"]
+        path = ["dpdk", "dev default", "num-tx-desc"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_log_level(self, value):
@@ -329,13 +338,13 @@ class VppConfigGenerator:
         :param value: Log level.
         :type value: str
         """
-        path = [u"dpdk", u"log-level"]
+        path = ["dpdk", "log-level"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dpdk_no_pci(self):
         """Add DPDK no-pci."""
-        path = [u"dpdk", u"no-pci"]
-        self.add_config_item(self._nodeconfig, u"", 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.
@@ -347,7 +356,7 @@ class VppConfigGenerator:
         """
         if value is None:
             value = Topology.get_uio_driver(self._node)
-        path = [u"dpdk", u"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):
@@ -356,14 +365,14 @@ class VppConfigGenerator:
         :param value: Graph node variant default value.
         :type value: str
         """
-        if variant == u"icl":
+        if variant == "icl":
             value = 512
-        elif variant in [u"skx", u"hsw"]:
+        elif variant in ["skx", "hsw"]:
             value = 256
         else:
             return
 
-        path = [u"dpdk", u"max-simd-bitwidth"]
+        path = ["dpdk", "max-simd-bitwidth"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_cpu_main_core(self, value):
@@ -372,7 +381,7 @@ class VppConfigGenerator:
         :param value: Main core option.
         :type value: str
         """
-        path = [u"cpu", u"main-core"]
+        path = ["cpu", "main-core"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_cpu_corelist_workers(self, value):
@@ -381,7 +390,7 @@ class VppConfigGenerator:
         :param value: Corelist-workers option.
         :type value: str
         """
-        path = [u"cpu", u"corelist-workers"]
+        path = ["cpu", "corelist-workers"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_main_heap_size(self, value):
@@ -390,7 +399,7 @@ class VppConfigGenerator:
         :param value: Amount of heap.
         :type value: str
         """
-        path = [u"memory", u"main-heap-size"]
+        path = ["memory", "main-heap-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_main_heap_page_size(self, value):
@@ -399,7 +408,7 @@ class VppConfigGenerator:
         :param value: Heap page size.
         :type value: str
         """
-        path = [u"memory", u"main-heap-page-size"]
+        path = ["memory", "main-heap-page-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_default_hugepage_size(self, value=Constants.DEFAULT_HUGEPAGE_SIZE):
@@ -408,13 +417,13 @@ class VppConfigGenerator:
         :param value: Hugepage size.
         :type value: str
         """
-        path = [u"memory", u"default-hugepage-size"]
+        path = ["memory", "default-hugepage-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_api_trace(self):
         """Add API trace configuration."""
-        path = [u"api-trace", u"on"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["api-trace", "on"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_ip6_hash_buckets(self, value):
         """Add IP6 hash buckets configuration.
@@ -422,7 +431,7 @@ class VppConfigGenerator:
         :param value: Number of IP6 hash buckets.
         :type value: str
         """
-        path = [u"ip6", u"hash-buckets"]
+        path = ["ip6", "hash-buckets"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_ip6_heap_size(self, value):
@@ -431,7 +440,7 @@ class VppConfigGenerator:
         :param value: IP6 Heapsize amount.
         :type value: str
         """
-        path = [u"ip6", u"heap-size"]
+        path = ["ip6", "heap-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_ipsec_spd_flow_cache_ipv4_inbound(self, value):
@@ -440,7 +449,7 @@ class VppConfigGenerator:
         :param value: "on" to enable spd flow cache.
         :type value: str
         """
-        path = [u"ipsec", u"ipv4-inbound-spd-flow-cache"]
+        path = ["ipsec", "ipv4-inbound-spd-flow-cache"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_ipsec_spd_flow_cache_ipv4_outbound(self, value):
@@ -449,7 +458,7 @@ class VppConfigGenerator:
         :param value: "on" to enable spd flow cache.
         :type value: str
         """
-        path = [u"ipsec", u"ipv4-outbound-spd-flow-cache"]
+        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):
@@ -467,7 +476,7 @@ class VppConfigGenerator:
         :param value: "on" to enable spd fast path.
         :type value: str
         """
-        path = [u"ipsec", u"ipv4-outbound-spd-fast-path"]
+        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):
@@ -476,7 +485,7 @@ class VppConfigGenerator:
         :param value: Number of buckets.
         :type value: int
         """
-        path = [u"ipsec", u"spd-fast-path-num-buckets"]
+        path = ["ipsec", "spd-fast-path-num-buckets"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_statseg_size(self, value):
@@ -485,7 +494,7 @@ class VppConfigGenerator:
         :param value: Stats heapsize amount.
         :type value: str
         """
-        path = [u"statseg", u"size"]
+        path = ["statseg", "size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_statseg_page_size(self, value):
@@ -494,7 +503,7 @@ class VppConfigGenerator:
         :param value: Stats heapsize amount.
         :type value: str
         """
-        path = [u"statseg", u"page-size"]
+        path = ["statseg", "page-size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_statseg_per_node_counters(self, value):
@@ -503,7 +512,7 @@ class VppConfigGenerator:
         :param value: "on" to switch the counters on.
         :type value: str
         """
-        path = [u"statseg", u"per-node-counters"]
+        path = ["statseg", "per-node-counters"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_plugin(self, state, *plugins):
@@ -515,27 +524,27 @@ class VppConfigGenerator:
         :type plugins: list
         """
         for plugin in plugins:
-            path = [u"plugins", f"plugin {plugin}", state]
-            self.add_config_item(self._nodeconfig, u" ", 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 = [u"dpdk", u"no-multi-seg"]
-        self.add_config_item(self._nodeconfig, u"", 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 = [u"dpdk", u"no-tx-checksum-offload"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["dpdk", "no-tx-checksum-offload"]
+        self.add_config_item(self._nodeconfig, "", path)
 
-    def add_nat(self, value=u"deterministic"):
+    def add_nat(self, value="deterministic"):
         """Add NAT mode configuration.
 
         :param value: NAT mode.
         :type value: str
         """
-        path = [u"nat", value]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["nat", value]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_nat_max_translations_per_thread(self, value):
         """Add NAT max. translations per thread number configuration.
@@ -543,21 +552,21 @@ class VppConfigGenerator:
         :param value: NAT mode.
         :type value: str
         """
-        path = [u"nat", u"max translations per thread"]
+        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 = [u"nsim", u"poll-main-thread"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["nsim", "poll-main-thread"]
+        self.add_config_item(self._nodeconfig, "", path)
 
-    def add_tcp_congestion_control_algorithm(self, value=u"cubic"):
+    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 = [u"tcp", u"cc-algo"]
+        path = ["tcp", "cc-algo"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_tcp_preallocated_connections(self, value):
@@ -566,7 +575,7 @@ class VppConfigGenerator:
         :param value: The number of pre-allocated connections.
         :type value: int
         """
-        path = [u"tcp", u"preallocated-connections"]
+        path = ["tcp", "preallocated-connections"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_tcp_preallocated_half_open_connections(self, value):
@@ -575,23 +584,23 @@ class VppConfigGenerator:
         :param value: The number of pre-allocated half open connections.
         :type value: int
         """
-        path = [u"tcp", u"preallocated-half-open-connections"]
+        path = ["tcp", "preallocated-half-open-connections"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_enable(self):
         """Add session enable."""
-        path = [u"session", u"enable"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        path = ["session", "enable"]
+        self.add_config_item(self._nodeconfig, "", path)
 
     def add_session_app_socket_api(self):
         """Use session app socket api."""
-        path = [u"session", u"use-app-socket-api"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        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 = [u"session", u"evt_qs_memfd_seg"]
-        self.add_config_item(self._nodeconfig, u"", path)
+        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.
@@ -599,7 +608,7 @@ class VppConfigGenerator:
         :param value: Session event queue length.
         :type value: int
         """
-        path = [u"session", u"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):
@@ -608,7 +617,7 @@ class VppConfigGenerator:
         :param value: Session event queue segment size.
         :type value: str
         """
-        path = [u"session", u"evt_qs_seg_size"]
+        path = ["session", "evt_qs_seg_size"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_preallocated_sessions(self, value):
@@ -617,7 +626,7 @@ class VppConfigGenerator:
         :param value: Number of pre-allocated sessions.
         :type value: int
         """
-        path = [u"session", u"preallocated-sessions"]
+        path = ["session", "preallocated-sessions"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_session_v4_session_table_buckets(self, value):
@@ -626,7 +635,7 @@ class VppConfigGenerator:
         :param value: Number of v4 session table buckets.
         :type value: int
         """
-        path = [u"session", u"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):
@@ -635,7 +644,7 @@ class VppConfigGenerator:
         :param value: Size of v4 session table memory.
         :type value: str
         """
-        path = [u"session", u"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):
@@ -644,7 +653,7 @@ class VppConfigGenerator:
         :param value: Number of v4 halfopen table buckets.
         :type value: int
         """
-        path = [u"session", u"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):
@@ -653,7 +662,7 @@ class VppConfigGenerator:
         :param value: Size of v4 halfopen table memory.
         :type value: str
         """
-        path = [u"session", u"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):
@@ -662,7 +671,7 @@ class VppConfigGenerator:
         :param value: Number of local endpoints table buckets.
         :type value: int
         """
-        path = [u"session", u"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):
@@ -671,7 +680,7 @@ class VppConfigGenerator:
         :param value: Size of local endpoints table memory.
         :type value: str
         """
-        path = [u"session", u"local-endpoints-table-memory"]
+        path = ["session", "local-endpoints-table-memory"]
         self.add_config_item(self._nodeconfig, value, path)
 
     def add_dma_dev(self, devices):
@@ -681,8 +690,8 @@ class VppConfigGenerator:
         :type devices: list
         """
         for device in devices:
-            path = [u"dsa", f"dev {device}"]
-            self.add_config_item(self._nodeconfig, u"", path)
+            path = ["dsa", f"dev {device}"]
+            self.add_config_item(self._nodeconfig, "", path)
 
     def write_config(self, filename=None):
         """Generate and write VPP startup configuration to file.
@@ -700,7 +709,7 @@ class VppConfigGenerator:
 
         cmd = f"echo \"{self._vpp_config}\" | sudo tee {filename}"
         exec_cmd_no_error(
-            self._node, cmd, message=u"Writing config file failed!"
+            self._node, cmd, message="Writing config file failed!"
         )
 
     def apply_config(self, filename=None, verify_vpp=True):
@@ -732,7 +741,7 @@ class VppInitConfig:
         """
         huge_size = Constants.DEFAULT_HUGEPAGE_SIZE
         for node in nodes.values():
-            if node[u"type"] == NodeType.DUT:
+            if node["type"] == NodeType.DUT:
                 vpp_config = VppConfigGenerator()
                 vpp_config.set_node(node)
                 vpp_config.add_unix_log()
@@ -751,7 +760,7 @@ class VppInitConfig:
                 vpp_config.add_plugin("enable", "dpdk_plugin.so")
                 vpp_config.add_dpdk_dev(
                     *[node["interfaces"][interface].get("pci_address") \
-                        for interface in node[u"interfaces"]]
+                        for interface in node["interfaces"]]
                 )
                 vpp_config.add_ip6_hash_buckets(2000000)
                 vpp_config.add_ip6_heap_size("4G")