[NET]: IP header modifier helpers annotations.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/include/net/inet_ecn.h b/include/net/inet_ecn.h
index cadc0eab54fa..10117c8503e8 100644
--- a/include/net/inet_ecn.h
+++ b/include/net/inet_ecn.h
@@ -53,7 +53,7 @@ static inline __u8 INET_ECN_encapsulate(__u8 outer, __u8 inner)
 
 static inline int IP_ECN_set_ce(struct iphdr *iph)
 {
-        u32 check = iph->check;
+        u32 check = (__force u32)iph->check;
         u32 ecn = (iph->tos + 1) & INET_ECN_MASK;
 
         /*
@@ -71,9 +71,9 @@ static inline int IP_ECN_set_ce(struct iphdr *iph)
          * INET_ECN_ECT_1 => check += htons(0xFFFD)
          * INET_ECN_ECT_0 => check += htons(0xFFFE)
          */
-        check += htons(0xFFFB) + htons(ecn);
+        check += (__force u16)htons(0xFFFB) + (__force u16)htons(ecn);
 
-        iph->check = check + (check>=0xFFFF);
+        iph->check = (__force __sum16)(check + (check>=0xFFFF));
         iph->tos |= INET_ECN_CE;
         return 1;
 }