34 extern __wsum csum_partial(const void *buff, int len, __wsum sum);
47 					      int len, __wsum sum,
53 				      int len, __wsum sum, int *err_ptr);
56 				    int len, __wsum sum, int *err_ptr);
62 #define csum_partial_copy_from_user(src, dst, len, sum, errp)   \  argument
63         csum_partial_copy_generic((__force const void *)(src), (dst), (len), (sum), (errp), NULL)
66 #define csum_partial_copy_nocheck(src, dst, len, sum)   \  argument
67         csum_partial_copy_generic((src), (dst), (len), (sum), NULL, NULL)
74 static inline __sum16 csum_fold(__wsum sum)  in csum_fold()  argument
79 	__asm__("rlwinm %0,%1,16,0,31" : "=r" (tmp) : "r" (sum));  in csum_fold()
83 	return (__force __sum16)(~((__force u32)sum + tmp) >> 16);  in csum_fold()
98                                      __wsum sum)  in csum_tcpudp_nofold()  argument
101 	unsigned long s = (__force u32)sum;  in csum_tcpudp_nofold()
115 	: "=r" (sum)  in csum_tcpudp_nofold()
116 	: "r" (daddr), "r"(saddr), "r"(proto + len), "0"(sum));  in csum_tcpudp_nofold()
117 	return sum;  in csum_tcpudp_nofold()
128 					__wsum sum)  in csum_tcpudp_magic()  argument
130 	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));  in csum_tcpudp_magic()