On 2026-02-01 09:04, Jakub Kicinski wrote:
On Thu, 29 Jan 2026 23:28:21 +0100 Daniel Borkmann wrote:
quoted
- * Get dma device for zero-copy operations to be used for this queue.
+ * Get dma device for zero-copy operations to be used for this queue. If the
+ * queue is leased to a physical queue, we retrieve the latter's dma device.
* When such device is not available or valid, the function will return NULL.
*
* Return: Device or NULL on error
*/
struct device *netdev_queue_get_dma_dev(struct net_device *dev, int idx)
{
- const struct netdev_queue_mgmt_ops *queue_ops = dev->queue_mgmt_ops;
+ const struct netdev_queue_mgmt_ops *queue_ops;
struct device *dma_dev;
+ if (idx < dev->real_num_rx_queues) {
+ struct netdev_rx_queue *rxq = __netif_get_rx_queue(dev, idx);
+
+ if (rxq->lease) {
+ rxq = rxq->lease;
+ dev = rxq->dev;
+ idx = get_netdev_rx_queue_index(rxq);
+ }
+ }
+
+ queue_ops = dev->queue_mgmt_ops;
We're gonna call physical device's op without locking it no?
Yeah, sorry about that. I'll change this to be similar to the new
mp_open.