linux-kernel - [PATCH 3.10 28/54] net: dst: provide accessor function to dst->xfrm

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Message-Id: <20131101220214.477624415@linuxfoundation.org>
Date:	Fri,  1 Nov 2013 15:03:56 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Vlad Yasevich <vyasevich@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.10 28/54] net: dst: provide accessor function to dst->xfrm

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vlad Yasevich <vyasevich@...il.com>

[ Upstream commit e87b3998d795123b4139bc3f25490dd236f68212 ]

dst->xfrm is conditionally defined.  Provide accessor funtion that
is always available.

Signed-off-by: Vlad Yasevich <vyasevich@...il.com>
Acked-by: Neil Horman <nhorman@...driver.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/net/dst.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -477,10 +477,22 @@ static inline struct dst_entry *xfrm_loo
 {
 	return dst_orig;
 } 
+
+static inline struct xfrm_state *dst_xfrm(const struct dst_entry *dst)
+{
+	return NULL;
+}
+
 #else
 extern struct dst_entry *xfrm_lookup(struct net *net, struct dst_entry *dst_orig,
 				     const struct flowi *fl, struct sock *sk,
 				     int flags);
+
+/* skb attached with this dst needs transformation if dst->xfrm is valid */
+static inline struct xfrm_state *dst_xfrm(const struct dst_entry *dst)
+{
+	return dst->xfrm;
+}
 #endif
 
 #endif /* _NET_DST_H */


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