[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>
diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h
index 3dfc885..68e2b32 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