XDP_UMEM_FILL_RING
case XDP_UMEM_FILL_RING:
q = (optname == XDP_UMEM_FILL_RING) ? &xs->fq_tmp :
err = setsockopt(fd, SOL_XDP, XDP_UMEM_FILL_RING,
setsockopt(sock_fd, SOL_XDP, XDP_UMEM_FILL_RING, &num_desc,