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Date:   Sat, 5 Dec 2020 15:40:01 +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 v4 net-next 2/2] net: dsa: qca: ar9331: export stats64

> +static void ar9331_stats_update(struct ar9331_sw_port *port,
> +				struct rtnl_link_stats64 *stats)
> +{
> +	struct ar9331_sw_stats *s = &port->stats;
> +
> +	stats->rx_packets = s->rxbroad + s->rxmulti + s->rx64byte +
> +		s->rx128byte + s->rx256byte + s->rx512byte + s->rx1024byte +
> +		s->rx1518byte + s->rxmaxbyte;
> +	stats->tx_packets = s->txbroad + s->txmulti + s->tx64byte +
> +		s->tx128byte + s->tx256byte + s->tx512byte + s->tx1024byte +
> +		s->tx1518byte + s->txmaxbyte;
> +	stats->rx_bytes = s->rxgoodbyte;
> +	stats->tx_bytes = s->txbyte;
> +	stats->rx_errors = s->rxfcserr + s->rxalignerr + s->rxrunt +
> +		s->rxfragment + s->rxoverflow;
> +	stats->tx_errors = s->txoversize;
> +	stats->multicast = s->rxmulti;
> +	stats->collisions = s->txcollision;
> +	stats->rx_length_errors = s->rxrunt + s->rxfragment + s->rxtoolong;
> +	stats->rx_crc_errors = s->rxfcserr + s->rxalignerr + s->rxfragment;
> +	stats->rx_frame_errors = s->rxalignerr;
> +	stats->rx_missed_errors = s->rxoverflow;
> +	stats->tx_aborted_errors = s->txabortcol;
> +	stats->tx_fifo_errors = s->txunderrun;
> +	stats->tx_window_errors = s->txlatecol;
> +	stats->rx_nohandler = s->filtered;
> +}
> +

Since these are u64 and you cannot take the mutex, you need to using
include/linux/u64_stats_sync.h

	Andrew

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