o [FEATURE] Reduce LAP Tx queue to 2 packets (from 10)
                Improve latency, reduce buffer usage
        o [FEATURE] LAP Tx queue not full notification (flow start)
                Poll higher layer to fill synchronously LAP window (7 packets)
        o [FEATURE] LMP LSAP scheduler
                Ensure Tx fairness between LSAPs (sockets, IrCOMM, IrNET...)