@@ -3019,7 +3019,7 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb,
}
} else if (skb->csum_bad) {
/* ip_summed == CHECKSUM_NONE in this case */
- return 1;
+ return (__force __sum16) 1;
}
skb->csum = psum;
@@ -3308,15 +3308,15 @@ static inline int gso_pskb_expand_head(struct sk_buff *skb, int extra)
* is in the res argument (i.e. normally zero or ~ of checksum of a pseudo
* header.
*/
-static inline __sum16 gso_make_checksum(struct sk_buff *skb, __wsum res)
+static inline __sum16 gso_make_checksum(struct sk_buff *skb, __sum16 res)
{
int plen = SKB_GSO_CB(skb)->csum_start - skb_headroom(skb) -
skb_transport_offset(skb);
- __u16 csum;
+ __sum16 csum;
csum = csum_fold(csum_partial(skb_transport_header(skb),
plen, skb->csum));
- skb->csum = res;
+ skb->csum = (__force __wsum) res;
SKB_GSO_CB(skb)->csum_start -= plen;
return csum;
@@ -1738,8 +1738,8 @@ static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh,
return err;
}
- return skb_checksum_init_zero_check(skb, proto, uh->check,
- inet_compute_pseudo);
+ return (__force int)skb_checksum_init_zero_check(skb, proto, uh->check,
+ inet_compute_pseudo);
}
/*
@@ -80,8 +80,8 @@ int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto)
* for the UDP packet we'll check if that socket allows zero checksum
* for IPv6 (set by socket option).
*/
- return skb_checksum_init_zero_check(skb, proto, uh->check,
- ip6_compute_pseudo);
+ return (__force int)skb_checksum_init_zero_check(skb, proto, uh->check,
+ ip6_compute_pseudo);
}
EXPORT_SYMBOL(udp6_csum_init);
In __skb_checksum_validate_complete and its callers, we only test that the return value is non-zero, so it's safe to __force the type. Callers of gso_make_checksum pass a __sum16, use that. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> --- include/linux/skbuff.h | 8 ++++---- net/ipv4/udp.c | 4 ++-- net/ipv6/ip6_checksum.c | 4 ++-- 3 files changed, 8 insertions(+), 8 deletions(-)