26 __wsum csum_partial(const void *buff, int len, __wsum sum);
37 csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
40 csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr);
45 static inline __sum16 csum_fold(__wsum sum)  in csum_fold()  argument
49 	: "=r" (sum)  in csum_fold()
50 	: "r" (sum)  in csum_fold()
52 	return (__force __sum16)(~(__force u32)sum >> 16);  in csum_fold()
63 	__wsum sum;  in ip_fast_csum()  local
80 	: "=r" (sum), "=r" (iph), "=r" (ihl), "=r" (tmp1)  in ip_fast_csum()
83 	return csum_fold(sum);  in ip_fast_csum()
88 		   unsigned short proto, __wsum sum)  in csum_tcpudp_nofold()  argument
91 	if (__builtin_constant_p(sum) && sum == 0) {  in csum_tcpudp_nofold()
100 		: "=&r" (sum)  in csum_tcpudp_nofold()
113 		: "=&r"(sum)  in csum_tcpudp_nofold()
114 		: "r" (sum), "r" (daddr), "r" (saddr), "r" (lenprot)  in csum_tcpudp_nofold()
117 	return sum;  in csum_tcpudp_nofold()
125 		  unsigned short proto, __wsum sum)  in csum_tcpudp_magic()  argument
127 	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));  in csum_tcpudp_magic()
144 		__be32 proto, __wsum sum);
148 		unsigned short proto, __wsum sum)  in csum_ipv6_magic()  argument
151 					   htonl(proto), sum));  in csum_ipv6_magic()