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[v3,net-next,3/9] net: dsa: Add helper to convert from devlink to ds

Message ID 20200909235827.3335881-4-andrew@lunn.ch
State New
Headers show
Series None | expand

Commit Message

Andrew Lunn Sept. 9, 2020, 11:58 p.m. UTC 
Given a devlink instance, return the dsa switch it is associated to.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
 include/net/dsa.h |  7 +++++++
 net/dsa/dsa.c     | 12 ++----------
 2 files changed, 9 insertions(+), 10 deletions(-)
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Patch

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 75c8fac82017..42ae6d4d9d43 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -664,6 +664,13 @@  struct dsa_devlink_priv {
 	struct dsa_switch *ds;
 };
 
+static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl)
+{
+	struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
+
+	return dl_priv->ds;
+}
+
 struct dsa_switch_driver {
 	struct list_head	list;
 	const struct dsa_switch_ops *ops;
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 1ce9ba8cf545..9b7019d86165 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -330,11 +330,7 @@  EXPORT_SYMBOL_GPL(call_dsa_notifiers);
 int dsa_devlink_param_get(struct devlink *dl, u32 id,
 			  struct devlink_param_gset_ctx *ctx)
 {
-	struct dsa_devlink_priv *dl_priv;
-	struct dsa_switch *ds;
-
-	dl_priv = devlink_priv(dl);
-	ds = dl_priv->ds;
+	struct dsa_switch *ds = dsa_devlink_to_ds(dl);
 
 	if (!ds->ops->devlink_param_get)
 		return -EOPNOTSUPP;
@@ -346,11 +342,7 @@  EXPORT_SYMBOL_GPL(dsa_devlink_param_get);
 int dsa_devlink_param_set(struct devlink *dl, u32 id,
 			  struct devlink_param_gset_ctx *ctx)
 {
-	struct dsa_devlink_priv *dl_priv;
-	struct dsa_switch *ds;
-
-	dl_priv = devlink_priv(dl);
-	ds = dl_priv->ds;
+	struct dsa_switch *ds = dsa_devlink_to_ds(dl);
 
 	if (!ds->ops->devlink_param_set)
 		return -EOPNOTSUPP;