Re: [RFC net-next v3 1/7] queue_api: add support for fetching per queue DMA dev
From: Jakub Kicinski <kuba@kernel.org>
Date: 2025-08-15 17:16:28
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On Fri, 15 Aug 2025 14:03:42 +0300 Dragos Tatulea wrote:
+static inline 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;
+ struct device *dma_dev;
+
+ if (queue_ops && queue_ops->ndo_queue_get_dma_dev)
+ dma_dev = queue_ops->ndo_queue_get_dma_dev(dev, idx);
+ else
+ dma_dev = dev->dev.parent;
+
+ return dma_dev && dma_dev->dma_mask ? dma_dev : NULL;
+}This really does not have to live in the header file.