linux-kernel - Re: [PATCH iwl-next v9 03/14] net: ethtool: mm: reset verification status when link is down

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Message-ID: <20250310102432.000032ad@gmail.com>
Date: Mon, 10 Mar 2025 10:24:32 +0800
From: Furong Xu <0x1207@...il.com>
To: Faizal Rahim <faizal.abdul.rahim@...ux.intel.com>
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>, Przemek Kitszel
 <przemyslaw.kitszel@...el.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
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 <hayashi.kunihiko@...ionext.com>, Vinicius Costa Gomes
 <vinicius.gomes@...el.com>, intel-wired-lan@...ts.osuosl.org,
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Subject: Re: [PATCH iwl-next v9 03/14] net: ethtool: mm: reset verification
 status when link is down

On Sun,  9 Mar 2025 06:46:37 -0400
Faizal Rahim <faizal.abdul.rahim@...ux.intel.com> wrote:

> When the link partner goes down, "ethtool --show-mm" still displays
> "Verification status: SUCCEEDED," reflecting a previous state that is
> no longer valid.
> 
> Reset the verification status to ensure it reflects the current state.
> 
> Signed-off-by: Faizal Rahim <faizal.abdul.rahim@...ux.intel.com>
> ---
>  net/ethtool/mm.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/net/ethtool/mm.c b/net/ethtool/mm.c
> index bfd988464d7d..ad9b40034003 100644
> --- a/net/ethtool/mm.c
> +++ b/net/ethtool/mm.c
> @@ -415,6 +415,10 @@ void ethtool_mmsv_link_state_handle(struct ethtool_mmsv *mmsv, bool up)
>  		/* New link => maybe new partner => new verification process */
>  		ethtool_mmsv_apply(mmsv);
>  	} else {
> +		/* Reset the reported verification state while the link is down */
> +		if (mmsv->verify_enabled)
> +			mmsv->status = ETHTOOL_MM_VERIFY_STATUS_INITIAL;
> +
>  		/* No link or pMAC not enabled */
>  		ethtool_mmsv_configure_pmac(mmsv, false);
>  		ethtool_mmsv_configure_tx(mmsv, false);

Reviewed-by: Furong Xu <0x1207@...il.com>