[TIPC]: Force linearization of non-linear sk_buffs

This patch allows TIPC to process incoming messages that are
stored in a fragmented sk_buff, by forcing the linearization
of any such messages it receives.

Note: This is an interim solution to allow TIPC to operate with
Ethernet devices that generate non-linear buffers (such as the
gianfar driver), until such time as the rest of TIPC is enhanced
to handle sk_buffs with multiple data areas.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/net/tipc/core.h b/net/tipc/core.h
index b3c9df385bbc..325404fd4eb5 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -337,4 +337,16 @@ static inline void buf_discard(struct sk_buff *skb)
         kfree_skb(skb);
 }
 
+/**
+ * buf_linearize - convert a TIPC message buffer into a single contiguous piece
+ * @skb: message buffer
+ *
+ * Returns 0 on success.
+ */
+
+static inline int buf_linearize(struct sk_buff *skb)
+{
+        return skb_linearize(skb);
+}
+
 #endif