IXGBE_DCB_CREDIT_QUANTUM
min_credit = ((max_frame_size / 2) + IXGBE_DCB_CREDIT_QUANTUM - 1) /
IXGBE_DCB_CREDIT_QUANTUM;
min_credit = ((max_frame_size / 2) + IXGBE_DCB_CREDIT_QUANTUM - 1) /
IXGBE_DCB_CREDIT_QUANTUM;
((IXGBE_DCB_MAX_TSO_SIZE / IXGBE_DCB_CREDIT_QUANTUM) + 1)