FIX: Workaround AVF interface down until VPP-1934

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

diff --git a/resources/libraries/python/Tap.py b/resources/libraries/python/Tap.py
index 50e065f..041a774 100644 (file)
--- a/resources/libraries/python/Tap.py
+++ b/resources/libraries/python/Tap.py
@@ -13,8 +13,6 @@
 
 """Tap utilities library."""
 
-from enum import IntEnum
-
 from robot.api import logger
 
 from resources.libraries.python.Constants import Constants
@@ -24,34 +22,30 @@ from resources.libraries.python.PapiExecutor import PapiSocketExecutor
 from resources.libraries.python.topology import Topology
 
 
-class TapFlags(IntEnum):
-    """TAP interface flags."""
-    TAP_FLAG_GSO = 1
-
-
-class Tap(object):
+class Tap:
     """Tap utilities."""
 
     @staticmethod
-    def add_tap_interface(node, tap_name, mac=None):
+    def add_tap_interface(node, tap_name, mac=None, num_rx_queues=1):
         """Add tap interface with name and optionally with MAC.
 
         :param node: Node to add tap on.
         :param tap_name: Tap interface name for linux tap.
         :param mac: Optional MAC address for VPP tap.
+        :param num_rx_queues: Number of RX queues.
         :type node: dict
-        :type tap_name: str or unicode
+        :type tap_name: str
         :type mac: str
+        :type num_rx_queues: int
         :returns: Returns a interface index.
         :rtype: int
         """
-        if isinstance(tap_name, unicode):
-            tap_name = str(tap_name)
-        cmd = 'tap_create_v2'
+        cmd = u"tap_create_v2"
         args = dict(
             id=Constants.BITWISE_NON_ZERO,
-            use_random_mac=False if mac else True,
+            use_random_mac=bool(mac is None),
             mac_address=L2Util.mac_to_bin(mac) if mac else None,
+            num_rx_queues=int(num_rx_queues),
             host_mtu_set=False,
             host_mac_addr_set=False,
             host_ip4_prefix_set=False,
@@ -60,16 +54,16 @@ class Tap(object):
             host_ip6_gw_set=False,
             host_namespace_set=False,
             host_if_name_set=True,
-            host_bridge_set=False,
             host_if_name=tap_name,
+            host_bridge_set=False
         )
-        err_msg = 'Failed to create tap interface {tap} on host {host}'.format(
-            tap=tap_name, host=node['host'])
+        err_msg = f"Failed to create tap interface {tap_name} " \
+            f"on host {node[u'host']}"
 
         with PapiSocketExecutor(node) as papi_exec:
             sw_if_index = papi_exec.add(cmd, **args).get_sw_if_index(err_msg)
 
-        if_key = Topology.add_new_port(node, 'tap')
+        if_key = Topology.add_new_port(node, u"tap")
         Topology.update_interface_sw_if_index(node, if_key, sw_if_index)
         Topology.update_interface_name(node, if_key, tap_name)
         if mac is None:
@@ -91,7 +85,7 @@ class Tap(object):
         :returns: VPP tap interface dev_name.
         :rtype: str
         """
-        return Tap.tap_dump(node, host_if_name).get('dev_name')
+        return Tap.tap_dump(node, host_if_name).get(u"dev_name")
 
     @staticmethod
     def vpp_get_tap_interface_mac(node, interface_name):
@@ -127,24 +121,24 @@ class Tap(object):
             :returns: Processed tap interface dump.
             :rtype: dict
             """
-            tap_dump['host_mac_addr'] = str(tap_dump['host_mac_addr'])
-            tap_dump['host_ip4_prefix'] = str(tap_dump['host_ip4_prefix'])
-            tap_dump['host_ip6_prefix'] = str(tap_dump['host_ip6_prefix'])
-            tap_dump['tap_flags'] = tap_dump['tap_flags'].value \
-                if hasattr(tap_dump['tap_flags'], 'value') \
-                else int(tap_dump['tap_flags'])
-            tap_dump['host_namespace'] = None \
-                if tap_dump['host_namespace'] == '(nil)' \
-                else tap_dump['host_namespace']
-            tap_dump['host_bridge'] = None \
-                if tap_dump['host_bridge'] == '(nil)' \
-                else tap_dump['host_bridge']
+            tap_dump[u"host_mac_addr"] = str(tap_dump[u"host_mac_addr"])
+            tap_dump[u"host_ip4_prefix"] = str(tap_dump[u"host_ip4_prefix"])
+            tap_dump[u"host_ip6_prefix"] = str(tap_dump[u"host_ip6_prefix"])
+            tap_dump[u"tap_flags"] = tap_dump[u"tap_flags"].value \
+                if hasattr(tap_dump[u"tap_flags"], u"value") \
+                else int(tap_dump[u"tap_flags"])
+            tap_dump[u"host_namespace"] = None \
+                if tap_dump[u"host_namespace"] == u"(nil)" \
+                else tap_dump[u"host_namespace"]
+            tap_dump[u"host_bridge"] = None \
+                if tap_dump[u"host_bridge"] == u"(nil)" \
+                else tap_dump[u"host_bridge"]
 
             return tap_dump
 
-        cmd = 'sw_interface_tap_v2_dump'
-        err_msg = 'Failed to get TAP dump on host {host}'.format(
-            host=node['host'])
+        cmd = u"sw_interface_tap_v2_dump"
+        err_msg = f"Failed to get TAP dump on host {node[u'host']}"
+
         with PapiSocketExecutor(node) as papi_exec:
             details = papi_exec.add(cmd).get_details(err_msg)
 
@@ -152,9 +146,9 @@ class Tap(object):
         for dump in details:
             if name is None:
                 data.append(process_tap_dump(dump))
-            elif dump.get('host_if_name') == name:
+            elif dump.get(u"host_if_name") == name:
                 data = process_tap_dump(dump)
                 break
 
-        logger.debug('TAP data:\n{tap_data}'.format(tap_data=data))
+        logger.debug(f"TAP data:\n{data}")
         return data