Re: [PATCH net-next 2/2] net/mlx5e: Clamp page_pool size to max

[Dragos Tatulea]

On Tue, Sep 23, 2025 at 07:23:56AM -0700, Jakub Kicinski wrote:
> On Mon, 22 Sep 2025 12:18:35 +0300 Tariq Toukan wrote:
> > When the user configures a large ring size (8K) and a large MTU (9000)
> > in HW-GRO mode, the queue will fail to allocate due to the size of the
> > page_pool going above the limit.
> 
> Please do some testing. A PP cache of 32k is just silly, you should
> probably use a smaller limit.
You mean clamping the pool_size to a certain limit so that the page_pool
ring size doesn't cover a full RQ when the RQ ring size is too large?

Thanks,
Dragos