"""Tap utilities library."""
-from enum import IntEnum
-
+from ipaddress import ip_address
from robot.api import logger
from resources.libraries.python.Constants import Constants
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
:param tap_name: Tap interface name for linux tap.
:param mac: Optional MAC address for VPP tap.
:type node: dict
- :type tap_name: str or unicode
+ :type tap_name: str
:type mac: str
: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,
- mac_address=L2Util.mac_to_bin(mac) if mac else None,
- host_mtu_set=False,
- host_mac_addr_set=False,
- host_ip4_prefix_set=False,
- host_ip6_prefix_set=False,
- host_ip4_gw_set=False,
- host_ip6_gw_set=False,
- host_namespace_set=False,
- host_if_name_set=True,
- host_bridge_set=False,
- host_if_name=tap_name,
+ use_random_mac=0 if mac else 1,
+ mac_address=L2Util.mac_to_bin(mac) if mac else 6 * b"\0",
+ host_namespace=64 * b"\0",
+ host_mac_addr=6 * b"\0",
+ host_if_name_set=1,
+ host_if_name=tap_name.encode(encoding=u"utf-8") +
+ (64 - len(tap_name)) * b"\0",
+ host_bridge=64 * b"\0",
+ host_ip4_addr=4 * b"\0",
+ host_ip6_addr=16 * b"\0",
+ host_ip4_gw=4 * b"\0",
+ host_ip6_gw=16 * b"\0"
)
- 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:
: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):
: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"] = L2Util.bin_to_mac(
+ tap_dump[u"host_mac_addr"]
+ )
+ tap_dump[u"host_ip4_addr"] = ip_address(tap_dump[u"host_ip4_addr"])
+ tap_dump[u"host_ip6_addr"] = ip_address(tap_dump[u"host_ip6_addr"])
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)
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