MLX4_EN_TX_WQE_MAX_WQEBBS
return (wqs < (HEADROOM + (2 * MLX4_EN_TX_WQE_MAX_WQEBBS)));
(MLX4_EN_TX_WQE_MAX_WQEBBS - 1), ("Wrapping around TX ring"));
if (unlikely(pad < (MLX4_EN_TX_WQE_MAX_WQEBBS - 1))) {