diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/netdev_queues.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/net/core/netdev_queues.c b/net/core/netdev_queues.c index fae92ee090c4..97acf6440829 100644 --- a/net/core/netdev_queues.c +++ b/net/core/netdev_queues.c @@ -9,16 +9,29 @@ * @dev: net_device * @idx: queue index * - * 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; + if (queue_ops && queue_ops->ndo_queue_get_dma_dev) dma_dev = queue_ops->ndo_queue_get_dma_dev(dev, idx); else |