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udp: call __skb_checksum_complete when doing full checksum

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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>
This commit is contained in:
Tom Herbert
2014-06-14 23:24:20 -07:00
committed by David S. Miller
parent 46fb51eb96
commit bbdff225ed
1 changed files with 3 additions and 1 deletions
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4
include/net/udp.h
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@@ -111,7 +111,9 @@ struct sk_buff;
*/ */
static inline __sum16 __udp_lib_checksum_complete(struct sk_buff *skb) 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) static inline int udp_lib_checksum_complete(struct sk_buff *skb)