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Date:	Mon, 28 Apr 2014 11:14:27 -0700
From:	Florian Fainelli <>
	Florian Fainelli <>
Subject: [PATCH net-next 1/2] net: dsa: add ds_to_priv

DSA drivers have a trick which consists in allocating "priv_size" more
bytes to account for the DSA driver private context. Add a helper
function to access that private context instead of open-coding it in
drivers with (void *)(ds + 1).

Signed-off-by: Florian Fainelli <>
 include/net/dsa.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 7828ebf99ee1..6efce384451e 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -181,6 +181,11 @@ struct dsa_switch_driver {
 void register_switch_driver(struct dsa_switch_driver *type);
 void unregister_switch_driver(struct dsa_switch_driver *type);
+static inline void *ds_to_priv(struct dsa_switch *ds)
+	return (void *)(ds + 1);
  * The original DSA tag format and some other tag formats have no
  * ethertype, which means that we need to add a little hack to the

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