Best way to handle SPI TX when using DMA RX in SPI...

I have studied how to use SPI DMA.

The examples from STM32 project shows independent TX/RX.

I need to handle the 16-bit data as a register. When the slave receives 16-bit data, it should echo it right away for example.

Now I can receive DMA RX transmission complete interrupt.

This is RX handler:

void DMA2_ReceiveComplete_Callback()
{
    spi1_tx = spi1_rx;
    LL_SPI_TransmitData16(SPI1, spi1_tx);
    LL_DMA_SetDataLength(DMA2, LL_DMA_STREAM_0, 1);
    LL_DMA_EnableStream(DMA2, LL_DMA_STREAM_0);
}

This way works well. To send the data whenever it receives 16-bit data, it echo in its next turn. Is this good way to send data? Is there any better or faster way?

These are SPI1 configuration:

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Best way to handle SPI TX when using DMA RX in SPI slave in STM32F767