netdev - Re: [PATCH net-next v2 2/3] net: dsa: add Arrow SpeedChips XRS700x driver

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Date:   Wed, 25 Nov 2020 20:25:11 -0600
From:   George McCollister <george.mccollister@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        "open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>
Subject: Re: [PATCH net-next v2 2/3] net: dsa: add Arrow SpeedChips XRS700x driver

On Wed, Nov 25, 2020 at 7:42 PM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Wed, 25 Nov 2020 13:37:39 -0600 George McCollister wrote:
> > Add a driver with initial support for the Arrow SpeedChips XRS7000
> > series of gigabit Ethernet switch chips which are typically used in
> > critical networking applications.
> >
> > The switches have up to three RGMII ports and one RMII port.
> > Management to the switches can be performed over i2c or mdio.
> >
> > Support for advanced features such as PTP and
> > HSR/PRP (IEC 62439-3 Clause 5 & 4) is not included in this patch and
> > may be added at a later date.
> >
> > Signed-off-by: George McCollister <george.mccollister@...il.com>
>
> You need to add symbol exports otherwise this won't build with
> allmodconfig:
>
> ERROR: modpost: "xrs7004f_info"
> [drivers/net/dsa/xrs700x/xrs700x_mdio.ko] undefined! ERROR: modpost:
> "xrs7004e_info" [drivers/net/dsa/xrs700x/xrs700x_mdio.ko] undefined!
> ERROR: modpost: "xrs7003f_info"
> [drivers/net/dsa/xrs700x/xrs700x_mdio.ko] undefined! ERROR: modpost:
> "xrs7003e_info" [drivers/net/dsa/xrs700x/xrs700x_mdio.ko] undefined!
> ERROR: modpost: "xrs7004f_info"
> [drivers/net/dsa/xrs700x/xrs700x_i2c.ko] undefined! ERROR: modpost:
> "xrs7004e_info" [drivers/net/dsa/xrs700x/xrs700x_i2c.ko] undefined!
> ERROR: modpost: "xrs7003f_info"
> [drivers/net/dsa/xrs700x/xrs700x_i2c.ko] undefined! ERROR: modpost:
> "xrs7003e_info" [drivers/net/dsa/xrs700x/xrs700x_i2c.ko] undefined!

I was wondering if I possibly needed to do that but wasn't getting any
errors the way I was building.

>
> > +     {XRS_RX_UNDERSIZE_L, "rx_undersize"},
> > +     {XRS_RX_FRAGMENTS_L, "rx_fragments"},
> > +     {XRS_RX_OVERSIZE_L, "rx_oversize"},
> > +     {XRS_RX_JABBER_L, "rx_jabber"},
> > +     {XRS_RX_ERR_L, "rx_err"},
> > +     {XRS_RX_CRC_L, "rx_crc"},
>
> As Vladimir already mentioned to you the statistics which have
> corresponding entries in struct rtnl_link_stats64 should be reported
> the standard way. The infra for DSA may not be in place yet, so best
> if you just drop those for now.

Okay, that clears it up a bit. Just drop these 6? I'll read through
that thread again and try to make sense of it.

Thanks