netdev - [PATCH net-next RFC v1 3/4] net: dsa: Add helper for converting devlink port to ds and port

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Date:   Sat, 19 Sep 2020 16:43:31 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     netdev <netdev@...r.kernel.org>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>, Jiri Pirko <jiri@...dia.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Chris Healy <cphealy@...il.com>, Andrew Lunn <andrew@...n.ch>
Subject: [PATCH net-next RFC v1 3/4] net: dsa: Add helper for converting devlink port to ds and port

Hide away from DSA drivers how devlink works.

Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
 include/net/dsa.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 01da896b2998..a24d5158ee0c 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -685,6 +685,20 @@ static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl)
 	return dl_priv->ds;
 }
 
+static inline
+struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port)
+{
+	struct devlink *dl = port->devlink;
+	struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
+
+	return dl_priv->ds;
+}
+
+static inline int dsa_devlink_port_to_port(struct devlink_port *port)
+{
+	return port->index;
+}
+
 struct dsa_switch_driver {
 	struct list_head	list;
 	const struct dsa_switch_ops *ops;
-- 
2.28.0