netdev - Re: [PATCH net-next v9 08/10] bnxt_en: add support for hds-thresh ethtool command

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Message-ID: <CACKFLimq3dJL2U+gctRJ4TFQYwrRbDr1DDhihWwogz482WebmQ@mail.gmail.com>
Date: Tue, 14 Jan 2025 22:28:19 -0800
From: Michael Chan <michael.chan@...adcom.com>
To: Taehee Yoo <ap420073@...il.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com, 
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	willemb@...gle.com, daniel.zahka@...il.com, 
	Andy Gospodarek <gospo@...adcom.com>
Subject: Re: [PATCH net-next v9 08/10] bnxt_en: add support for hds-thresh
 ethtool command

On Tue, Jan 14, 2025 at 6:30 AM Taehee Yoo <ap420073@...il.com> wrote:
>
> The bnxt_en driver has configured the hds_threshold value automatically
> when TPA is enabled based on the rx-copybreak default value.
> Now the hds-thresh ethtool command is added, so it adds an
> implementation of hds-thresh option.
>
> Configuration of the hds-thresh is applied only when
> the tcp-data-split is enabled. The default value of
> hds-thresh is 256, which is the default value of
> rx-copybreak, which used to be the hds_thresh value.
>
> The maximum hds-thresh is 1023.
>
>    # Example:
>    # ethtool -G enp14s0f0np0 tcp-data-split on hds-thresh 256
>    # ethtool -g enp14s0f0np0
>    Ring parameters for enp14s0f0np0:
>    Pre-set maximums:
>    ...
>    HDS thresh:  1023
>    Current hardware settings:
>    ...
>    TCP data split:         on
>    HDS thresh:  256
>
> Tested-by: Stanislav Fomichev <sdf@...ichev.me>
> Tested-by: Andy Gospodarek <gospo@...adcom.com>
> Signed-off-by: Taehee Yoo <ap420073@...il.com>

Thanks.
Reviewed-by: Michael Chan <michael.chan@...adcom.com>

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