R8169_RX_BUF_SIZE
RTL_W16(tp, RxMaxSize, R8169_RX_BUF_SIZE + 1);
WRITE_ONCE(desc->opts1, cpu_to_le32(DescOwn | eor | R8169_RX_BUF_SIZE));
data = alloc_pages_node(node, GFP_KERNEL, get_order(R8169_RX_BUF_SIZE));
mapping = dma_map_page(d, data, 0, R8169_RX_BUF_SIZE, DMA_FROM_DEVICE);
__free_pages(data, get_order(R8169_RX_BUF_SIZE));
R8169_RX_BUF_SIZE, DMA_FROM_DEVICE);
__free_pages(tp->Rx_databuff[i], get_order(R8169_RX_BUF_SIZE));