def vpp_create_bond_interface(node, mode, load_balance=None, mac=None):
"""Create bond interface on VPP node.
:param node: DUT node from topology.
:param mode: Link bonding mode.
:param load_balance: Load balance (optional, valid for xor and lacp
modes, otherwise ignored).
:param mac: MAC address to assign to the bond interface (optional).
:type node: dict
:type mode: str
:type load_balance: str
:type mac: str
:returns: Interface key (name) in topology.
:rtype: str
:raises RuntimeError: If it is not possible to create bond interface on
the node.
"""
hw_addr = '' if mac is None else 'hw-addr {mac}'.format(mac=mac)
lb = '' if load_balance is None \
else 'lb {lb}'.format(lb=load_balance)
output = VatExecutor.cmd_from_template(
node, 'create_bond_interface.vat', mode=mode, lb=lb, mac=hw_addr)
if output[0].get('retval') == 0:
sw_if_idx = output[0].get('sw_if_index')
InterfaceUtil.add_bond_eth_interface(node, sw_if_idx=sw_if_idx)
if_key = Topology.get_interface_by_sw_index(node, sw_if_idx)
return if_key
else:
raise RuntimeError('Create bond interface failed on node "{n}"'
.format(n=node['host']))
def modify_tap_interface(node, if_index, tap_name, mac=None):
"""Modify tap interface like linux interface name or VPP MAC.
:param node: Node to modify tap on.
:param if_index: Index of tap interface to be modified.
:param tap_name: Tap interface name for linux tap.
:param mac: Optional MAC address for VPP tap.
:type node: dict
:type if_index: int
:type tap_name: str
:type mac: str
:returns: Returns a interface index.
:rtype: int
"""
command = 'modify'
if mac is not None:
args = 'sw_if_index {} tapname {} mac {}'.format(
if_index, tap_name, mac)
else:
args = 'sw_if_index {} tapname {}'.format(if_index, tap_name)
with VatTerminal(node) as vat:
resp = vat.vat_terminal_exec_cmd_from_template('tap.vat',
tap_command=command,
tap_arguments=args)
if_key = Topology.get_interface_by_sw_index(node, if_index)
Topology.update_interface_tap_dev_name(node, if_key, tap_name)
if mac:
Topology.update_interface_mac_address(node, if_key, mac)
return resp[0]['sw_if_index']
