19 unsigned int csum_partial(const void *buff, int len, __wsum sum);
20 unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len,
23 					int len, unsigned int sum);
35 __wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,  in csum_and_copy_to_user()  argument
38 	sum = csum_partial(src, len, sum);  in csum_and_copy_to_user()
39 	if (copy_to_user(dst, src, len)) {  in csum_and_copy_to_user()
130 csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,  in csum_tcpudp_nofold()  argument
133 	unsigned long tmp = (ntohs(len) << 16) + proto * 256;  in csum_tcpudp_nofold()
164 csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,  in csum_tcpudp_magic()  argument
167 	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));  in csum_tcpudp_magic()
175 static inline unsigned short ip_compute_csum(const void *buff, int len)  in ip_compute_csum()  argument
177 	return csum_fold(csum_partial(buff, len, 0));  in ip_compute_csum()
183 				__u32 len, unsigned short proto,  in csum_ipv6_magic()  argument
240 		  "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));  in csum_ipv6_magic()