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ipv6: suppress sparse warnings in IP6_ECN_set_ce() 

Pass the correct type __wsum to csum_sub() and csum_add(). This doesn't
really change anything since __wsum really *is* __be32, but removes the
address space warnings from sparse.

Cc: Eric Dumazet <edumazet@google.com>
Fixes: 34ae6a1aa0 ("ipv6: update skb->csum when CE mark is propagated")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg 2016-08-12 07:48:21 +02:00 committed by David S. Miller
parent 0ed661d5a4
commit c15c0ab12f
1 changed files with 2 additions and 1 deletions
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3
include/net/inet_ecn.h
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@ -128,7 +128,8 @@ static inline int IP6_ECN_set_ce(struct sk_buff *skb, struct ipv6hdr *iph)
to = from | htonl(INET_ECN_CE << 20);
*(__be32 *)iph = to;
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->csum = csum_add(csum_sub(skb->csum, from), to);
skb->csum = csum_add(csum_sub(skb->csum, (__force __wsum)from),
(__force __wsum)to);
return 1;
}