Re: [Intel-wired-lan] [iwl-next] ice, irdma: Add rdma_qp_limits_sel devlink parameter for irdma

[Leon Romanovsky <leon@kernel.org>]

On Thu, Sep 04, 2025 at 02:57:19PM -0500, Tatyana Nikolova wrote:
> Add a devlink parameter to switch between different QP resource profiles
> (max number of QPs) supported by irdma for Intel Ethernet 800 devices. The
> rdma_qp_limits_sel is translated into an index in the rsrc_limits_table to
> select a power of two number between 1 and 256 for max supported QPs (1K-256K).
> To reduce the irdma memory footprint, set the rdma_qp_limits_sel default value
> to 1 (max 1K QPs).
> 
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
> Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
> ---
> Since the changes to irdma are minor, this is targeted to iwl-next/net-next.

<...>

>  #define DEVLINK_LOCAL_FWD_DISABLED_STR "disabled"
>  #define DEVLINK_LOCAL_FWD_ENABLED_STR "enabled"
>  #define DEVLINK_LOCAL_FWD_PRIORITIZED_STR "prioritized"
> @@ -1621,6 +1723,7 @@ enum ice_param_id {
>  	ICE_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
>  	ICE_DEVLINK_PARAM_ID_TX_SCHED_LAYERS,
>  	ICE_DEVLINK_PARAM_ID_LOCAL_FWD,
> +	ICE_DEVLINK_PARAM_ID_RDMA_QP_LIMITS_SEL,
>  };

I was under impression that driver-specific devlink knobs are not
allowed. Was this limitation changed for Intel?

Thanks