Commit 997a4944 authored by Johannes Berg's avatar Johannes Berg Committed by Greg Kroah-Hartman

ipv6: suppress sparse warnings in IP6_ECN_set_ce()

[ Upstream commit c15c0ab1 ]

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 <>
Fixes: 34ae6a1a ("ipv6: update skb->csum when CE mark is propagated")
Signed-off-by: default avatarJohannes Berg <>
Acked-by: default avatarEric Dumazet <>
Signed-off-by: default avatarDavid S. Miller <>
Signed-off-by: default avatarSasha Levin <>
parent 9aae17f8
......@@ -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;
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