netdev - Re: [PATCH net-next 3/5] net: lan966x: add port module support

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Date:   Thu, 18 Nov 2021 09:59:17 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc:     davem@...emloft.net, kuba@...nel.org, robh+dt@...nel.org,
        p.zabel@...gutronix.de, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 3/5] net: lan966x: add port module support

On Thu, Nov 18, 2021 at 10:57:03AM +0100, Horatiu Vultur wrote:
> > > +static void decode_sgmii_word(u16 lp_abil, struct lan966x_port_status *status)
> > > +{
> > > +     status->an_complete = true;
> > > +     if (!(lp_abil & LPA_SGMII_LINK)) {
> > > +             status->link = false;
> > > +             return;
> > > +     }
> > > +
> > > +     switch (lp_abil & LPA_SGMII_SPD_MASK) {
> > > +     case LPA_SGMII_10:
> > > +             status->speed = SPEED_10;
> > > +             break;
> > > +     case LPA_SGMII_100:
> > > +             status->speed = SPEED_100;
> > > +             break;
> > > +     case LPA_SGMII_1000:
> > > +             status->speed = SPEED_1000;
> > > +             break;
> > > +     default:
> > > +             status->link = false;
> > > +             return;
> > > +     }
> > > +     if (lp_abil & LPA_SGMII_FULL_DUPLEX)
> > > +             status->duplex = DUPLEX_FULL;
> > > +     else
> > > +             status->duplex = DUPLEX_HALF;
> > > +}
> > 
> > The above mentioned function will also handle SGMII as well.
> 
> I noticed that you have phylink_decode_sgmii_work(), so I will try to
> export it also.

Another approach would be to split phylink_mii_c22_pcs_decode_state()
so that the appropriate decode function is selected depending on the
interface state, which may be a better idea.

-- 
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