linux-kernel - Re: [PATCH v2 2/2] net: dsa: qca: ar9331: export stats64

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Date:   Wed, 2 Dec 2020 16:11:24 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org
Subject: Re: [PATCH v2 2/2] net: dsa: qca: ar9331: export stats64

> @@ -422,6 +527,7 @@ static void ar9331_sw_phylink_mac_link_down(struct dsa_switch *ds, int port,
>  					    phy_interface_t interface)
>  {
>  	struct ar9331_sw_priv *priv = (struct ar9331_sw_priv *)ds->priv;
> +	struct ar9331_sw_port *p = &priv->port[port];
>  	struct regmap *regmap = priv->regmap;
>  	int ret;
>  
> @@ -429,6 +535,8 @@ static void ar9331_sw_phylink_mac_link_down(struct dsa_switch *ds, int port,
>  				 AR9331_SW_PORT_STATUS_MAC_MASK, 0);
>  	if (ret)
>  		dev_err_ratelimited(priv->dev, "%s: %i\n", __func__, ret);
> +
> +	cancel_delayed_work_sync(&p->mib_read);
>  }

You could update the stats here, after the interface is down. You then
know the stats are actually up to date and correct!

     Andrew