netdev - Re: [PATCH net-next] net: dsa: sja1105: Add support for port mirroring

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Date:   Thu, 3 Oct 2019 22:15:29 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     David Miller <davem@...emloft.net>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] net: dsa: sja1105: Add support for port mirroring

Hi David,

On Thu, 3 Oct 2019 at 22:04, David Miller <davem@...emloft.net> wrote:
>
> From: Vladimir Oltean <olteanv@...il.com>
> Date: Thu,  3 Oct 2019 02:34:43 +0300
>
> > +     already_enabled = (general_params->mirr_port != SJA1105_NUM_PORTS);
> > +     if (already_enabled && enabled && general_params->mirr_port != to) {
> > +             dev_err(priv->ds->dev,
> > +                     "Delete mirroring rules towards port %d first", to);
> > +             return -EBUSY;
> > +     }
>
> In this situation, the user is trying to add a mirror rule to port 'to'
> when we already have rules pointing to "general_params->mirr_port".
>
> So you should be printing out the value of "general_params->mirr_port"
> in this message rather than 'to'.

Good catch, thanks.

-Vladimir