dev_pause

Configure Ethernet PAUSE frames (flow control) on a network device.

Uses ethtool -A to enable or disable RX and TX pause frames on the
specified interface.

Variables:
  PAUSE - Enable or disable pause frames: "on" or "off" (default: off)
  NIC   - NIC index to configure (default: 0)

Usage:
  %import@dut dev_pause PAUSE=on