[NET]: Annotate ip_vs_checksum_complete() and callers.

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/ip_vs.h

@@ -988,7 +988,7 @@ extern int ip_vs_make_skb_writable(struct sk_buff **pskb, int len);
 extern void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
 		struct ip_vs_conn *cp, int dir);
 
-extern u16 ip_vs_checksum_complete(struct sk_buff *skb, int offset);
+extern __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset);
 
 static inline u16 ip_vs_check_diff(u32 old, u32 new, u16 oldsum)
 {

net/ipv4/ipvs/ip_vs_core.c

@@ -536,7 +536,7 @@ static unsigned int ip_vs_post_routing(unsigned int hooknum,
 	return NF_STOP;
 }
 
-u16 ip_vs_checksum_complete(struct sk_buff *skb, int offset)
+__sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset)
 {
 	return csum_fold(skb_checksum(skb, offset, skb->len - offset, 0));
 }