From: Vladimir Oltean <olteanv@gmail.com>
To: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: Woojung Huh <woojung.huh@microchip.com>,
Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
kernel@pengutronix.de, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, Lukas Wunner <lukas@wunner.de>,
UNGLinuxDriver@microchip.com
Subject: Re: [PATCH net-next v1 2/3] net: dsa: ar9331: add support for pause stats
Date: Sat, 25 Jun 2022 01:03:17 +0300 [thread overview]
Message-ID: <20220624220317.ckhx6z7cmzegvoqi@skbuf> (raw)
In-Reply-To: <20220624125902.4068436-2-o.rempel@pengutronix.de>
On Fri, Jun 24, 2022 at 02:59:01PM +0200, Oleksij Rempel wrote:
> Add support for pause stats and fix rx_packets/tx_packets calculation.
>
> Pause packets are counted by raw.rx64byte/raw.tx64byte counters, so
> subtract it from main rx_packets/tx_packets counters.
>
> tx_/rx_bytes are not affected.
>
> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
> ---
> drivers/net/dsa/qca/ar9331.c | 23 +++++++++++++++++++++--
> 1 file changed, 21 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/dsa/qca/ar9331.c b/drivers/net/dsa/qca/ar9331.c
> index fb3fe74abfe6..82412f54c432 100644
> --- a/drivers/net/dsa/qca/ar9331.c
> +++ b/drivers/net/dsa/qca/ar9331.c
> @@ -606,6 +607,7 @@ static void ar9331_sw_phylink_mac_link_up(struct dsa_switch *ds, int port,
> static void ar9331_read_stats(struct ar9331_sw_port *port)
> {
> struct ar9331_sw_priv *priv = ar9331_sw_port_to_priv(port);
> + struct ethtool_pause_stats *pstats = &port->pause_stats;
> struct rtnl_link_stats64 *stats = &port->stats;
> struct ar9331_sw_stats_raw raw;
> int ret;
> @@ -625,9 +627,11 @@ static void ar9331_read_stats(struct ar9331_sw_port *port)
> stats->tx_bytes += raw.txbyte;
>
> stats->rx_packets += raw.rx64byte + raw.rx128byte + raw.rx256byte +
> - raw.rx512byte + raw.rx1024byte + raw.rx1518byte + raw.rxmaxbyte;
> + raw.rx512byte + raw.rx1024byte + raw.rx1518byte +
> + raw.rxmaxbyte - raw.rxpause;
> stats->tx_packets += raw.tx64byte + raw.tx128byte + raw.tx256byte +
> - raw.tx512byte + raw.tx1024byte + raw.tx1518byte + raw.txmaxbyte;
> + raw.tx512byte + raw.tx1024byte + raw.tx1518byte +
> + raw.txmaxbyte - raw.txpause;
Is there an authoritative source who is able to tell whether rtnl_link_stats64 ::
rx_packets and tx_packets should count PAUSE frames or not?
>
> stats->rx_length_errors += raw.rxrunt + raw.rxfragment + raw.rxtoolong;
> stats->rx_crc_errors += raw.rxfcserr;
> @@ -646,6 +650,9 @@ static void ar9331_read_stats(struct ar9331_sw_port *port)
> stats->multicast += raw.rxmulti;
> stats->collisions += raw.txcollision;
>
> + pstats->tx_pause_frames += raw.txpause;
> + pstats->rx_pause_frames += raw.rxpause;
> +
> spin_unlock(&port->stats_lock);
> }
next prev parent reply other threads:[~2022-06-24 22:03 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-24 12:59 [PATCH net-next v1 1/3] net: dsa: add get_pause_stats support Oleksij Rempel
2022-06-24 12:59 ` [PATCH net-next v1 2/3] net: dsa: ar9331: add support for pause stats Oleksij Rempel
2022-06-24 22:03 ` Vladimir Oltean [this message]
2022-06-26 17:10 ` Oleksij Rempel
2022-06-27 16:15 ` Jakub Kicinski
2022-06-27 20:02 ` Vladimir Oltean
2022-06-28 3:09 ` Jakub Kicinski
2022-06-28 7:22 ` Andrew Lunn
2022-06-28 8:45 ` Oleksij Rempel
2022-06-28 16:10 ` Jakub Kicinski
2022-06-29 7:07 ` Oleksij Rempel
2022-06-24 12:59 ` [PATCH net-next v1 3/3] net: dsa: microchip: add pause stats support Oleksij Rempel
2022-06-24 21:52 ` Vladimir Oltean
2022-06-24 22:03 ` [PATCH net-next v1 1/3] net: dsa: add get_pause_stats support Vladimir Oltean
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