| 1234567891011121314151617181920212223242526272829303132333435363738 |
- /*
- * Licensed under the GPL
- */
- #ifndef __UM_SYSDEP_CHECKSUM_H
- #define __UM_SYSDEP_CHECKSUM_H
- static inline __sum16 ip_compute_csum(const void *buff, int len)
- {
- return csum_fold (csum_partial(buff, len, 0));
- }
- #define _HAVE_ARCH_IPV6_CSUM
- static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
- const struct in6_addr *daddr,
- __u32 len, __u8 proto,
- __wsum sum)
- {
- __asm__(
- "addl 0(%1), %0 ;\n"
- "adcl 4(%1), %0 ;\n"
- "adcl 8(%1), %0 ;\n"
- "adcl 12(%1), %0 ;\n"
- "adcl 0(%2), %0 ;\n"
- "adcl 4(%2), %0 ;\n"
- "adcl 8(%2), %0 ;\n"
- "adcl 12(%2), %0 ;\n"
- "adcl %3, %0 ;\n"
- "adcl %4, %0 ;\n"
- "adcl $0, %0 ;\n"
- : "=&r" (sum)
- : "r" (saddr), "r" (daddr),
- "r"(htonl(len)), "r"(htonl(proto)), "0"(sum));
- return csum_fold(sum);
- }
- #endif
|
