Re: [PATCH net-next 4/4] RDMA/ionic: Add DCQCN parameter configuration via debugfs

[Eric Joyner <eric.joyner@amd.com>]

On 7/28/2026 4:16 PM, Eric Joyner wrote:
> 
> Leon,
> 
> From this thread for Patch 3:
> https://lore.kernel.org/linux-rdma/20260514163540.GT15586@unreal/, I understand
> that it's too large and it's exposing too much information; I can shrink that
> down and remove the entries there.
> 
> But before I make changes and resubmit, is what this patch is doing okay? It
> adds DCQCN configuration parameters so that they can be written to in debugfs
> and propagated to the firmware? Would this be considered too much meddling with
> the firmware in debugfs, too? We want to have a driver-configured mode for DCQCN
> and possibly other congestion control profiles.
> 
> - Eric

Hi Leon,

Can you tell me what an acceptable approach would be in terms of the DCQCN
configuration? It didn't get mentioned as part of the debugfs discussion on the
other patch in this series, and I want to know if it's ok if I can modify the
debugfs implementation to have these DCQCN tuning knobs in there, but to drop
everything else from the rdma driver debugfs that looks offensive.

- Eric