lp->next_rx_buf_to_use = 0x0;
lp->tx_ping_pong = get_bool(ofdev, "xlnx,tx-ping-pong");
lp->rx_ping_pong = get_bool(ofdev, "xlnx,rx-ping-pong");
lp->next_rx_buf_to_use = 0x0;
lp->tx_ping_pong = get_bool(ofdev, "xlnx,tx-ping-pong");
lp->rx_ping_pong = get_bool(ofdev, "xlnx,rx-ping-pong");