n_pkts = vq->async_ops.transfer_data(dev->vid,
queue_id, tdes, 0, pkt_burst_idx);
src_iovec = vec_pool;
dst_iovec = vec_pool + (VHOST_MAX_ASYNC_VEC >> 1);
src_it = it_pool;
dst_it = it_pool + 1;
n_pkts = vq->async_ops.transfer_data(dev->vid,
queue_id, tdes, 0, pkt_burst_idx);
src_iovec = vec_pool;
dst_iovec = vec_pool + (VHOST_MAX_ASYNC_VEC >> 1);
src_it = it_pool;
dst_it = it_pool + 1;