netdev - RE: [RFC 0/2] Add Rx checksum offload support

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Message-ID: <OS0PR01MB59222D5453745C2197DB1D4886629@OS0PR01MB5922.jpnprd01.prod.outlook.com>
Date:   Thu, 25 Nov 2021 10:16:44 +0000
From:   Biju Das <biju.das.jz@...renesas.com>
To:     Sergey Shtylyov <s.shtylyov@....ru>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>
Subject: RE: [RFC 0/2] Add Rx checksum offload support

Hi Sergey Shtylyov,

> Subject: Re: [RFC 0/2] Add Rx checksum offload support
> 
> On 11/23/21 4:31 PM, Biju Das wrote:
> 
> > TOE has hw support for calculating IP header checkum for IPV4 and
> > TCP/UDP/ICMP checksum for both IPV4 and IPV6.
> >
> > This patch series aims to adds Rx checksum offload supported by TOE.
> >
> > For RX, The result of checksum calculation is attached to last 4byte
> > of ethernet frames. First 2bytes is result of IPV4 header checksum and
> > next 2 bytes is TCP/UDP/ICMP.
> >
> > if frame does not have error "0000" attached to checksum calculation
> > result. For unsupported frames "ffff" is attached to checksum
> > calculation result. Cases like IPV6, IPV4 header is always set to
> "FFFF".
> >
> > we can test this functionality by the below commands
> >
> > ethtool -K eth0 rx on --> to turn on Rx checksum offload ethtool -K
> > eth0 rx off --> to turn off Rx checksum offload
> >
> > Biju Das (2):
> >   ravb: Fillup ravb_set_features_gbeth() stub
> >   ravb: Add Rx checksum offload support
> 
>    That's all fine but why in the world did you separate these patches?

OK, as you suggested will merge this patches and send an RFC for further feedback.

Regards,
Biju