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From:   Oleksij Rempel <o.rempel@pengutronix.de>
To:     Woojung Huh <woojung.huh@microchip.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>
Cc:     Oleksij Rempel <o.rempel@pengutronix.de>, kernel@pengutronix.de,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        Lukas Wunner <lukas@wunner.de>, UNGLinuxDriver@microchip.com
Subject: [PATCH net-next v2 1/4] net: dsa: add get_pause_stats support
Date:   Tue, 28 Jun 2022 10:51:52 +0200
Message-Id: <20220628085155.2591201-2-o.rempel@pengutronix.de>
In-Reply-To: <20220628085155.2591201-1-o.rempel@pengutronix.de>
References: <20220628085155.2591201-1-o.rempel@pengutronix.de>
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Add support for pause stats

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
---
 include/net/dsa.h |  2 ++
 net/dsa/slave.c   | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 33283eeda697..ea7bf007f34f 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -895,6 +895,8 @@ struct dsa_switch_ops {
 				  const struct ethtool_rmon_hist_range **ranges);
 	void	(*get_stats64)(struct dsa_switch *ds, int port,
 				   struct rtnl_link_stats64 *s);
+	void	(*get_pause_stats)(struct dsa_switch *ds, int port,
+				   struct ethtool_pause_stats *pause_stats);
 	void	(*self_test)(struct dsa_switch *ds, int port,
 			     struct ethtool_test *etest, u64 *data);
 
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 760ca58307a3..ad6a6663feeb 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1109,6 +1109,16 @@ static int dsa_slave_set_link_ksettings(struct net_device *dev,
 	return phylink_ethtool_ksettings_set(dp->pl, cmd);
 }
 
+static void dsa_slave_get_pause_stats(struct net_device *dev,
+				  struct ethtool_pause_stats *pause_stats)
+{
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct dsa_switch *ds = dp->ds;
+
+	if (ds->ops->get_pause_stats)
+		ds->ops->get_pause_stats(ds, dp->index, pause_stats);
+}
+
 static void dsa_slave_get_pauseparam(struct net_device *dev,
 				     struct ethtool_pauseparam *pause)
 {
@@ -2100,6 +2110,7 @@ static const struct ethtool_ops dsa_slave_ethtool_ops = {
 	.get_eee		= dsa_slave_get_eee,
 	.get_link_ksettings	= dsa_slave_get_link_ksettings,
 	.set_link_ksettings	= dsa_slave_set_link_ksettings,
+	.get_pause_stats	= dsa_slave_get_pause_stats,
 	.get_pauseparam		= dsa_slave_get_pauseparam,
 	.set_pauseparam		= dsa_slave_set_pauseparam,
 	.get_rxnfc		= dsa_slave_get_rxnfc,
-- 
2.30.2