Subject: Re: [PATCH net-next] net: xilinx: axienet: Implement BQL

From: Sean Anderson <[email-masked]>
Date: Tue, 18 Feb 2025 11:18:12 -0500

On 2/18/25 11:16, Andrew Lunn wrote:
>> > Could you please check if BQL can be implemented for DMAengine flow?
>> 
>> I can have a look, but TBH I do not test the dma engine configuration since it is
>> so much slower.
> 
> It might actually benefit more from BQL if it is slower?

Actually, it will benefit less. The hardware is the same, so the
slowdown is entirely due to extra CPU overhead. From the CPU's
perspective, the queues actually drain faster than normal.

--Sean