xsk_ring_prod__fill_addr
*xsk_ring_prod__fill_addr(&umem->fq, idx_fq++) = orig;
*xsk_ring_prod__fill_addr(&umem->fq, idx++) = addr;
*xsk_ring_prod__fill_addr(&xsk->fill, i) = addr;
*xsk_ring_prod__fill_addr(&xsk->fill, idx) = addr;
*xsk_ring_prod__fill_addr(&xsk->fill, idx + i) = addr;
*xsk_ring_prod__fill_addr(&xsk->fill, idx) = addr;