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From: Oleksij Rempel <o.rempel@pengutronix.de>
To: "David S. Miller" <davem@davemloft.net>,
	Andrew Lunn <andrew@lunn.ch>,
	Eric Dumazet <edumazet@google.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	Vladimir Oltean <olteanv@gmail.com>,
	Woojung Huh <woojung.huh@microchip.com>,
	Arun Ramadoss <arun.ramadoss@microchip.com>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	kernel@pengutronix.de,
	linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org,
	UNGLinuxDriver@microchip.com,
	David Ahern <dsahern@kernel.org>,
	Simon Horman <horms@kernel.org>,
	Willem de Bruijn <willemb@google.com>,
	=?UTF-8?q?S=C3=B8ren=20Andersen?= <san@skov.dk>
Subject: [PATCH net-next v7 01/12] net: dsa: add support for DCB get/set apptrust configuration
Date: Fri,  3 May 2024 15:13:40 +0200
Message-Id: <20240503131351.1969097-2-o.rempel@pengutronix.de>
In-Reply-To: <20240503131351.1969097-1-o.rempel@pengutronix.de>
References: <20240503131351.1969097-1-o.rempel@pengutronix.de>
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Add DCB support to get/set trust configuration for different packet
priority information sources. Some switch allow to chose different
source of packet priority classification. For example on KSZ switches it
is possible to configure VLAN PCP and/or DSCP sources.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
---
changes v6:
- port_set_apptrust pointer should be tested in dsa_user_dcbnl_set_apptrust()
changes v3:
- s/to choice/to chose/
---
 include/net/dsa.h |  4 ++++
 net/dsa/user.c    | 28 ++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index eef702dbea78b..40c127a301878 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -955,6 +955,10 @@ struct dsa_switch_ops {
 				      u8 prio);
 	int	(*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
 				      u8 prio);
+	int	(*port_set_apptrust)(struct dsa_switch *ds, int port,
+				     const u8 *sel, int nsel);
+	int	(*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel,
+				     int *nsel);
 
 	/*
 	 * Suspend and resume
diff --git a/net/dsa/user.c b/net/dsa/user.c
index c94b868855aa1..f4ac82e8a39e8 100644
--- a/net/dsa/user.c
+++ b/net/dsa/user.c
@@ -2136,6 +2136,32 @@ int dsa_user_change_mtu(struct net_device *dev, int new_mtu)
 	return err;
 }
 
+static int __maybe_unused
+dsa_user_dcbnl_set_apptrust(struct net_device *dev, u8 *sel, int nsel)
+{
+	struct dsa_port *dp = dsa_user_to_port(dev);
+	struct dsa_switch *ds = dp->ds;
+	int port = dp->index;
+
+	if (!ds->ops->port_set_apptrust)
+		return -EOPNOTSUPP;
+
+	return ds->ops->port_set_apptrust(ds, port, sel, nsel);
+}
+
+static int __maybe_unused
+dsa_user_dcbnl_get_apptrust(struct net_device *dev, u8 *sel, int *nsel)
+{
+	struct dsa_port *dp = dsa_user_to_port(dev);
+	struct dsa_switch *ds = dp->ds;
+	int port = dp->index;
+
+	if (!ds->ops->port_get_apptrust)
+		return -EOPNOTSUPP;
+
+	return ds->ops->port_get_apptrust(ds, port, sel, nsel);
+}
+
 static int __maybe_unused
 dsa_user_dcbnl_set_default_prio(struct net_device *dev, struct dcb_app *app)
 {
@@ -2376,6 +2402,8 @@ static const struct ethtool_ops dsa_user_ethtool_ops = {
 static const struct dcbnl_rtnl_ops __maybe_unused dsa_user_dcbnl_ops = {
 	.ieee_setapp		= dsa_user_dcbnl_ieee_setapp,
 	.ieee_delapp		= dsa_user_dcbnl_ieee_delapp,
+	.dcbnl_setapptrust	= dsa_user_dcbnl_set_apptrust,
+	.dcbnl_getapptrust	= dsa_user_dcbnl_get_apptrust,
 };
 
 static void dsa_user_get_stats64(struct net_device *dev,
-- 
2.39.2