linux-kernel - [PATCH net-next v7 02/16] net: dsa: add support for ethtool get_rmon

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Date:   Fri, 10 Jun 2022 12:28:19 +0200
From:   Clément Léger <clement.leger@...tlin.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Jose Abreu <joabreu@...opsys.com>
Cc:     Clément Léger <clement.leger@...tlin.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Herve Codina <herve.codina@...tlin.com>,
        Miquèl Raynal <miquel.raynal@...tlin.com>,
        Milan Stevanovic <milan.stevanovic@...com>,
        Jimmy Lalande <jimmy.lalande@...com>,
        Pascal Eberhard <pascal.eberhard@...com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH net-next v7 02/16] net: dsa: add support for ethtool get_rmon_stats()

Add support to allow dsa drivers to specify the .get_rmon_stats()
operation.

Reviewed-by: Vladimir Oltean <olteanv@...il.com>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
Signed-off-by: Clément Léger <clement.leger@...tlin.com>
---
 include/net/dsa.h |  3 +++
 net/dsa/slave.c   | 13 +++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 14f07275852b..64da5ed27fdc 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -888,6 +888,9 @@ struct dsa_switch_ops {
 				     struct ethtool_eth_mac_stats *mac_stats);
 	void	(*get_eth_ctrl_stats)(struct dsa_switch *ds, int port,
 				      struct ethtool_eth_ctrl_stats *ctrl_stats);
+	void	(*get_rmon_stats)(struct dsa_switch *ds, int port,
+				  struct ethtool_rmon_stats *rmon_stats,
+				  const struct ethtool_rmon_hist_range **ranges);
 	void	(*get_stats64)(struct dsa_switch *ds, int port,
 				   struct rtnl_link_stats64 *s);
 	void	(*self_test)(struct dsa_switch *ds, int port,
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 509b98dd9954..760ca58307a3 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1002,6 +1002,18 @@ dsa_slave_get_eth_ctrl_stats(struct net_device *dev,
 		ds->ops->get_eth_ctrl_stats(ds, dp->index, ctrl_stats);
 }
 
+static void
+dsa_slave_get_rmon_stats(struct net_device *dev,
+			 struct ethtool_rmon_stats *rmon_stats,
+			 const struct ethtool_rmon_hist_range **ranges)
+{
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct dsa_switch *ds = dp->ds;
+
+	if (ds->ops->get_rmon_stats)
+		ds->ops->get_rmon_stats(ds, dp->index, rmon_stats, ranges);
+}
+
 static void dsa_slave_net_selftest(struct net_device *ndev,
 				   struct ethtool_test *etest, u64 *buf)
 {
@@ -2081,6 +2093,7 @@ static const struct ethtool_ops dsa_slave_ethtool_ops = {
 	.get_eth_phy_stats	= dsa_slave_get_eth_phy_stats,
 	.get_eth_mac_stats	= dsa_slave_get_eth_mac_stats,
 	.get_eth_ctrl_stats	= dsa_slave_get_eth_ctrl_stats,
+	.get_rmon_stats		= dsa_slave_get_rmon_stats,
 	.set_wol		= dsa_slave_set_wol,
 	.get_wol		= dsa_slave_get_wol,
 	.set_eee		= dsa_slave_set_eee,
-- 
2.36.1