On Sun, 28 Feb 2021 16:22:47 +0800 Xuan Zhuo wrote:
> +static void virtnet_put_xdp_sq(struct virtnet_info *vi, struct send_queue
> *sq)
> +{
> + struct netdev_queue *txq;
> + unsigned int qp;
> +
> + if (vi->curr_queue_pairs <= nr_cpu_ids) {
> + qp = sq - vi->sq;
> +
The number of queues implemented by many virtio backends is limited,
especially some machines have a large number of CPUs. In this case, it
is often impossible to allocate a separate queue for XDP_TX.
This patch allows XDP_TX to run by reuse the existing SQ with
__netif_tx_lock() hold when there a
