72 	u32 csum = (__force u32) sum;  in csum_fold()  local
74 	csum += (csum >> 16) + (csum << 16);  in csum_fold()
75 	csum >>= 16;  in csum_fold()
76 	return (__force __sum16) ~csum;  in csum_fold()
97 	__u32 csum = (__force __u32)sum;  in csum_tcpudp_nofold()  local
99 	csum += (__force __u32)saddr;  in csum_tcpudp_nofold()
100 	if (csum < (__force __u32)saddr)  in csum_tcpudp_nofold()
101 		csum++;  in csum_tcpudp_nofold()
103 	csum += (__force __u32)daddr;  in csum_tcpudp_nofold()
104 	if (csum < (__force __u32)daddr)  in csum_tcpudp_nofold()
105 		csum++;  in csum_tcpudp_nofold()
107 	csum += len + proto;  in csum_tcpudp_nofold()
108 	if (csum < len + proto)  in csum_tcpudp_nofold()
109 		csum++;  in csum_tcpudp_nofold()
111 	return (__force __wsum)csum;  in csum_tcpudp_nofold()