From bbdff225ede6527f91184b2a7903df8aad803ace Mon Sep 17 00:00:00 2001
From: Tom Herbert <therbert@google.com>
Date: Sat, 14 Jun 2014 23:24:20 -0700
Subject: [PATCH] udp: call __skb_checksum_complete when doing full checksum
In __udp_lib_checksum_complete check if checksum is being done over all
the data (len is equal to skb->len) and if it is call
__skb_checksum_complete instead of __skb_checksum_complete_head. This
allows checksum to be saved in checksum complete.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/net/udp.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/net/udp.h b/include/net/udp.h
index 2ecfc6e156098..68a1fefe3dfe4 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -111,7 +111,9 @@ struct sk_buff;
*/
static inline __sum16 __udp_lib_checksum_complete(struct sk_buff *skb)
{
- return __skb_checksum_complete_head(skb, UDP_SKB_CB(skb)->cscov);
+ return (UDP_SKB_CB(skb)->cscov == skb->len ?
+ __skb_checksum_complete(skb) :
+ __skb_checksum_complete_head(skb, UDP_SKB_CB(skb)->cscov));
}
static inline int udp_lib_checksum_complete(struct sk_buff *skb)
--
GitLab