[NET]: Generic checksum annotations and cleanups.

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

1 files changed, 38 insertions, 38 deletions

diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h
index 3dfc885bdf25..68e2b32cf1d6 100644
--- a/include/net/ip6_checksum.h
+++ b/include/net/ip6_checksum.h
@@ -34,60 +34,60 @@
 
 #ifndef _HAVE_ARCH_IPV6_CSUM
 
-static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
-                                                     struct in6_addr *daddr,
-                                                     __u16 len,
-                                                     unsigned short proto,
-                                                     unsigned int csum) 
+static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+                                          const struct in6_addr *daddr,
+                                          __u32 len, unsigned short proto,
+                                          __wsum csum)
 {
 
         int carry;
         __u32 ulen;
         __u32 uproto;
+        __u32 sum = (__force u32)csum;
 
-        csum += saddr->s6_addr32[0];
-        carry = (csum < saddr->s6_addr32[0]);
-        csum += carry;
+        sum += (__force u32)saddr->s6_addr32[0];
+        carry = (sum < (__force u32)saddr->s6_addr32[0]);
+        sum += carry;
 
-        csum += saddr->s6_addr32[1];
-        carry = (csum < saddr->s6_addr32[1]);
-        csum += carry;
+        sum += (__force u32)saddr->s6_addr32[1];
+        carry = (sum < (__force u32)saddr->s6_addr32[1]);
+        sum += carry;
 
-        csum += saddr->s6_addr32[2];
-        carry = (csum < saddr->s6_addr32[2]);
-        csum += carry;
+        sum += (__force u32)saddr->s6_addr32[2];
+        carry = (sum < (__force u32)saddr->s6_addr32[2]);
+        sum += carry;
 
-        csum += saddr->s6_addr32[3];
-        carry = (csum < saddr->s6_addr32[3]);
-        csum += carry;
+        sum += (__force u32)saddr->s6_addr32[3];
+        carry = (sum < (__force u32)saddr->s6_addr32[3]);
+        sum += carry;
 
-        csum += daddr->s6_addr32[0];
-        carry = (csum < daddr->s6_addr32[0]);
-        csum += carry;
+        sum += (__force u32)daddr->s6_addr32[0];
+        carry = (sum < (__force u32)daddr->s6_addr32[0]);
+        sum += carry;
 
-        csum += daddr->s6_addr32[1];
-        carry = (csum < daddr->s6_addr32[1]);
-        csum += carry;
+        sum += (__force u32)daddr->s6_addr32[1];
+        carry = (sum < (__force u32)daddr->s6_addr32[1]);
+        sum += carry;
 
-        csum += daddr->s6_addr32[2];
-        carry = (csum < daddr->s6_addr32[2]);
-        csum += carry;
+        sum += (__force u32)daddr->s6_addr32[2];
+        carry = (sum < (__force u32)daddr->s6_addr32[2]);
+        sum += carry;
 
-        csum += daddr->s6_addr32[3];
-        carry = (csum < daddr->s6_addr32[3]);
-        csum += carry;
+        sum += (__force u32)daddr->s6_addr32[3];
+        carry = (sum < (__force u32)daddr->s6_addr32[3]);
+        sum += carry;
 
-        ulen = htonl((__u32) len);
-        csum += ulen;
-        carry = (csum < ulen);
-        csum += carry;
+        ulen = (__force u32)htonl((__u32) len);
+        sum += ulen;
+        carry = (sum < ulen);
+        sum += carry;
 
-        uproto = htonl(proto);
-        csum += uproto;
-        carry = (csum < uproto);
-        csum += carry;
+        uproto = (__force u32)htonl(proto);
+        sum += uproto;
+        carry = (sum < uproto);
+        sum += carry;
 
-        return csum_fold(csum);
+        return csum_fold((__force __wsum)csum);
 }
 
 #endif