[25.11 PATCH v3 0/5] Introduce DMA enqueue/dequeue operations

[Bruce Richardson]

On Sat, May 24, 2025 at 02:43:10PM +0530, pbhagavatula at marvell.com wrote:
> From: Pavan Nikhilesh <pbhagavatula at marvell.com>
> 
> Introduce DMA enqueue/dequeue operations to the DMA device library.
> 
> Add configuration flags to rte_dma_config instead of boolean for
> individual features.
> 
> The enqueue/dequeue operations allow applications to communicate with the
> DMA device using the rte_dma_op structure, providing a more flexible and
> efficient way to manage DMA operations.
> 

While I have no really strong objections to this addition to the dmadev
API, I'd appreciate if you could explain WHY or how this method of working
is more efficient in your usecase? When designing the dmadev APIs
originally, we looked at using both an enqueue-type API as well as the
implemented individual-op-based APIs. IIRC at that time testing showed that
using the single ops directly was faster than using the enqueue APIs, so
I'm wondering what exactly has changed, or is different about your usecase?

/Bruce