NFE_RX_READY
desc64->flags = htole16(NFE_RX_READY);
desc32->flags = htole16(NFE_RX_READY);
ring->desc64[i].flags = htole16(NFE_RX_READY);
ring->desc32[i].flags = htole16(NFE_RX_READY);
if (flags & NFE_RX_READY)
desc64->flags = htole16(NFE_RX_READY);
desc32->flags = htole16(NFE_RX_READY);