linux-kernel - Re: [PATCH net-next v2 1/1] net: stmmac: check CBS input values before configuration

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Message-ID: <58132260-81d0-4f0c-90b6-0c97c7a6a2f5@lunn.ch>
Date:   Wed, 1 Nov 2023 13:36:03 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Gan Yi Fang <yi.fang.gan@...el.com>
Cc:     Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Looi Hong Aun <hong.aun.looi@...el.com>,
        Voon Weifeng <weifeng.voon@...el.com>,
        Song Yoong Siang <yoong.siang.song@...el.com>,
        Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>
Subject: Re: [PATCH net-next v2 1/1] net: stmmac: check CBS input values
 before configuration

On Wed, Nov 01, 2023 at 02:19:20PM +0800, Gan Yi Fang wrote:
> From: Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>
> 
> Add check for below conditions before proceeding to configuration.
> A message will be prompted if the input value is invalid.
> 
> Idleslope minus sendslope should equal speed_div.
> Idleslope is always a positive value including zero.
> Sendslope is always a negative value including zero.
> Hicredit is always a positive value including zero.
> Locredit is always a negative value including zero.

Which of these conditional are specific to stmmac, and which are
generic to CBS? Anything which is generic to CBS i would expect to be
checked at a higher level, rather than in every driver implementing
CBS.

	Andrew