Re: [RFC net-next v3 7/7] net: devmem: allow binding on rx queues with same MA devices
From: Jakub Kicinski <kuba@kernel.org>
Date: 2025-08-15 17:24:34
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On Fri, 15 Aug 2025 14:03:48 +0300 Dragos Tatulea wrote:
+ rxq_dma_dev = netdev_queue_get_dma_dev(netdev, rxq_idx);
+ /* Multi-PF netdev queues can belong to different DMA devoces.
+ * Block this case.
+ */
+ if (rxq_dma_dev && dma_dev && rxq_dma_dev != dma_dev) {Why rxq_dma_dev ? 🤔️ Don't we want to error out if the first queue gave us a DMA dev but the second gave us a NULL ?
+ NL_SET_ERR_MSG(extack, "Can't bind to queues from different dma devices");
_FMT the conflicting queue IDs into this?