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authorTom Herbert <therbert@google.com>2014-06-14 23:24:20 -0700
committerDavid S. Miller <davem@davemloft.net>2014-06-15 01:00:49 -0700
commitbbdff225ede6527f91184b2a7903df8aad803ace (patch)
treee174f88e8d58e5fc8c6b5f21faa6f0b654c25709
parent46fb51eb96cafb2c148b7b5119adb5e31a2bf3c4 (diff)
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>
-rw-r--r--include/net/udp.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/net/udp.h b/include/net/udp.h
index 2ecfc6e15609..68a1fefe3dfe 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)

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