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Message-ID: <51d1565f-e43e-4906-af65-2ae672309b89@lunn.ch>
Date:   Mon, 18 Sep 2023 15:01:34 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Parthiban.Veerasooran@...rochip.com
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        corbet@....net, Steen.Hegelund@...rochip.com,
        rdunlap@...radead.org, horms@...nel.org, casper.casan@...il.com,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        Horatiu.Vultur@...rochip.com, Woojung.Huh@...rochip.com,
        Nicolas.Ferre@...rochip.com, UNGLinuxDriver@...rochip.com,
        Thorsten.Kummermehr@...rochip.com
Subject: Re: [RFC PATCH net-next 4/6] net: ethernet: implement data
 transaction interface

> >> +#define MAX_ETH_LEN  1536
> > 
> > Where do 1536 come from? Maybe this needs an OA_TC6 prefix to make it
> > clear this is specific to this protocol?
> Ah it is a mistake. It is supposed to be an ethernet packet size which 
> is 1518 (1500 bytes MTU size + 18 bytes overhead) and it is not from OA. 
> It is a mistake and will correct it in the next version.

Please try to express this using ETH_DATA_LEN + sizeof(struct
oa_tc6_overhead). Doing it like this will avoid errors like this since
it is also part documentation.

   Andrew

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