RX_LARGE_BUF
return sdesc->dma_addr & ~(dma_addr_t)(RX_LARGE_BUF | RX_UNMAPPED_BUF);
return (s->fl_pg_order > 0 && (sdesc->dma_addr & RX_LARGE_BUF)
dma_addr |= RX_LARGE_BUF;