[NETFILTER]: ipt_TTL: fix checksum update bug

Fix regression introduced by the incremental checksum patches.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/netfilter/ipt_TTL.c b/net/ipv4/netfilter/ipt_TTL.c
index 214d9d9c428f..96e79cc6d0f2 100644
--- a/net/ipv4/netfilter/ipt_TTL.c
+++ b/net/ipv4/netfilter/ipt_TTL.c
@@ -54,8 +54,8 @@ ipt_ttl_target(struct sk_buff **pskb,
         }
 
         if (new_ttl != iph->ttl) {
-                iph->check = nf_csum_update((iph->ttl << 8) ^ 0xFFFF,
-                                            new_ttl << 8,
+                iph->check = nf_csum_update(ntohs((iph->ttl << 8)) ^ 0xFFFF,
+                                            ntohs(new_ttl << 8),
                                             iph->check);
                 iph->ttl = new_ttl;
         }