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()
98 	__u32 csum = (__force __u32)sum;  in csum_tcpudp_nofold()  local
100 	csum += (__force __u32)saddr;  in csum_tcpudp_nofold()
101 	if (csum < (__force __u32)saddr)  in csum_tcpudp_nofold()
102 		csum++;  in csum_tcpudp_nofold()
104 	csum += (__force __u32)daddr;  in csum_tcpudp_nofold()
105 	if (csum < (__force __u32)daddr)  in csum_tcpudp_nofold()
106 		csum++;  in csum_tcpudp_nofold()
108 	csum += len + proto;  in csum_tcpudp_nofold()
109 	if (csum < len + proto)  in csum_tcpudp_nofold()
110 		csum++;  in csum_tcpudp_nofold()
112 	return (__force __wsum)csum;  in csum_tcpudp_nofold()