+ @staticmethod
+ def vpp_create_af_xdp_interface(
+ node, if_key, num_rx_queues=None, rxq_size=0, txq_size=0,
+ mode=u"auto"):
+ """Create AF_XDP interface on VPP node.
+
+ :param node: DUT node from topology.
+ :param if_key: Physical interface key from topology file of interface
+ to be bound to compatible driver.
+ :param num_rx_queues: Number of RX queues. (Optional, Default: none)
+ :param rxq_size: Size of RXQ (0 = Default API; 512 = Default VPP).
+ :param txq_size: Size of TXQ (0 = Default API; 512 = Default VPP).
+ :param mode: AF_XDP interface mode. (Optional, Default: auto).
+ :type node: dict
+ :type if_key: str
+ :type num_rx_queues: int
+ :type rxq_size: int
+ :type txq_size: int
+ :type mode: str
+ :returns: Interface key (name) in topology file.
+ :rtype: str
+ :raises RuntimeError: If it is not possible to create AF_XDP interface
+ on the node.
+ """
+ PapiSocketExecutor.run_cli_cmd(
+ node, u"set logging class af_xdp level debug"
+ )
+
+ cmd = u"af_xdp_create"
+ pci_addr = Topology.get_interface_pci_addr(node, if_key)
+ args = dict(
+ name=InterfaceUtil.pci_to_eth(node, pci_addr),
+ host_if=InterfaceUtil.pci_to_eth(node, pci_addr),
+ rxq_num=int(num_rx_queues) if num_rx_queues else 0,
+ rxq_size=rxq_size,
+ txq_size=txq_size,
+ mode=getattr(AfXdpMode, f"AF_XDP_API_MODE_{mode.upper()}").value
+ )
+ err_msg = f"Failed to create AF_XDP interface 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)
+
+ InterfaceUtil.vpp_set_interface_mac(
+ node, sw_if_index, Topology.get_interface_mac(node, if_key)
+ )
+ InterfaceUtil.add_eth_interface(
+ node, sw_if_index=sw_if_index, ifc_pfx=u"eth_af_xdp",
+ host_if_key=if_key
+ )
+
+ return Topology.get_interface_by_sw_index(node, sw_if_index)
+