linux-kernel - [ 035/143] net: dst: provide accessor function to dst->xfrm

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Date:	Mon, 12 May 2014 02:32:35 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Vlad Yasevich <vyasevich@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	"David S. Miller" <davem@...emloft.net>, Willy Tarreau <w@....eu>
Subject: [ 035/143] net: dst: provide accessor function to dst->xfrm

2.6.32-longterm 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: Willy Tarreau <w@....eu>
---
 include/net/dst.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/net/dst.h b/include/net/dst.h
index 5a900dd..49f443b 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -286,11 +286,22 @@ static inline int __xfrm_lookup(struct net *net, struct dst_entry **dst_p,
 {
 	return 0;
 }
+static inline struct xfrm_state *dst_xfrm(const struct dst_entry *dst)
+{
+	return NULL;
+}
+
 #else
 extern int xfrm_lookup(struct net *net, struct dst_entry **dst_p,
 		       struct flowi *fl, struct sock *sk, int flags);
 extern int __xfrm_lookup(struct net *net, struct dst_entry **dst_p,
 			 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
 
-- 
1.7.12.2.21.g234cd45.dirty



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