netdev - [PATCH net-next 09/14] tipc: more cleanup of tunnelling reception function

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Date:	Wed, 12 Feb 2014 13:31:09 -0500
From:	Jon Maloy <jon.maloy@...csson.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	erik.hugne@...csson.com, ying.xue@...driver.com, maloy@...jonn.com,
	tipc-discussion@...ts.sourceforge.net,
	Jon Maloy <jon.maloy@...csson.com>
Subject: [PATCH net-next 09/14] tipc: more cleanup of tunnelling reception function

We simplify and slim down the code in function tipc_tunnel_rcv()
No impact on the users of this function.

Signed-off-by: Jon Maloy <jon.maloy@...csson.com>
---
 net/tipc/link.c |   21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)

diff --git a/net/tipc/link.c b/net/tipc/link.c
index 76adca6..00f529e 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -2179,9 +2179,10 @@ static int tipc_link_tunnel_rcv(struct tipc_node *n_ptr,
 	struct sk_buff *tunnel_buf = *buf;
 	struct tipc_link *dest_link;
 	struct tipc_msg *tunnel_msg = buf_msg(tunnel_buf);
-	u32 msg_typ = msg_type(tunnel_msg);
 	u32 bearer_id = msg_bearer_id(tunnel_msg);
 
+	*buf = NULL;
+
 	if (bearer_id >= MAX_BEARERS)
 		goto exit;
 
@@ -2189,24 +2190,16 @@ static int tipc_link_tunnel_rcv(struct tipc_node *n_ptr,
 	if (!dest_link)
 		goto exit;
 
-	if (msg_typ == DUPLICATE_MSG) {
+	if (msg_type(tunnel_msg) == DUPLICATE_MSG)
 		tipc_link_dup_rcv(dest_link, tunnel_buf);
-		goto exit;
-	}
-
-	if (msg_type(tunnel_msg) == ORIGINAL_MSG) {
+	else if (msg_type(tunnel_msg) == ORIGINAL_MSG)
 		*buf = tipc_link_failover_rcv(dest_link, tunnel_buf);
+	else
+		pr_warn("%sunknown tunnel pkt received\n", link_co_err);
 
-		/* Do we have a buffer/buffer chain to return? */
-		if (*buf != NULL) {
-			kfree_skb(tunnel_buf);
-			return 1;
-		}
-	}
 exit:
-	*buf = NULL;
 	kfree_skb(tunnel_buf);
-	return 0;
+	return *buf != NULL;
 }
 
 /*
-- 
1.7.9.5

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