linux-kernel - Re: [PATCH net-next 1/1] net: stmmac: xgmac: EST interrupts handling

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Date:   Mon, 2 Oct 2023 13:55:51 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     Rohan G Thomas <rohan.g.thomas@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Eric Dumazet <edumazet@...gle.com>,
        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, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH net-next 1/1] net: stmmac: xgmac: EST interrupts
 handling

On Tue, 26 Sep 2023 14:25:56 +0300 Serge Semin wrote:
> On Sat, Sep 23, 2023 at 11:10:31AM +0800, Rohan G Thomas wrote:
> > Enabled the following EST related interrupts:
> >   1) Constant Gate Control Error (CGCE)
> >   2) Head-of-Line Blocking due to Scheduling (HLBS)
> >   3) Head-of-Line Blocking due to Frame Size (HLBF)
> >   4) Base Time Register error (BTRE)
> >   5) Switch to S/W owned list Complete (SWLC)
> > Also, add EST errors into the ethtool statistic.
> > 
> > The commit e49aa315cb01 ("net: stmmac: EST interrupts handling and
> > error reporting") and commit 9f298959191b ("net: stmmac: Add EST
> > errors into ethtool statistic") add EST interrupts handling and error
> > reporting support to DWMAC4 core. This patch enables the same support
> > for XGMAC.  
> 
> So, this is basically a copy of what was done for the DW QoS Eth
> IP-core (DW GMAC v4.x/v5.x). IMO it would be better to factor it out
> into a separate module together with the rest of the setup methods
> like it's done for TC or PTP. But since it implies some much more work
> I guess we can leave it as is for now...

I think we can push back a little harder. At the very least we should
get a clear explanation why this copy'n'paste is needed, i.e. what are
the major differences. No?