14 extern __wsum csum_partial(const void *buff, int len, __wsum sum);
16 				__wsum sum);
18 					int len, __wsum sum, int *csum_err);
19 #define csum_partial_copy_nocheck(src, dst, len, sum)	\  argument
20 	csum_partial_copy((src), (dst), (len), (sum))
28 static inline __sum16 csum_fold(__wsum sum)  in csum_fold()  argument
36 		: "=r" (sum)  in csum_fold()
37 		: "r" (sum << 16), "0" (sum)  in csum_fold()
39 	return (__force __sum16) sum;  in csum_fold()
50 					__wsum sum)  in csum_tcpudp_nofold()  argument
62 		: "=r" (sum), "=r" (saddr)  in csum_tcpudp_nofold()
64 		  "0" (sum),  in csum_tcpudp_nofold()
68 	return sum;  in csum_tcpudp_nofold()
73 					unsigned short proto, __wsum sum)  in csum_tcpudp_magic()  argument
75 	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));  in csum_tcpudp_magic()