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[IA64] implement csum_ipv6_magic for ia64.

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The asm version is 4.4 times faster than the generic C version and
10X smaller in code size.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Chen, Kenneth W
2006-11-10 13:17:50 -08:00
committed by Tony Luck
parent 5b4d5681ff
commit 007d77d0c5
2 changed files with 59 additions and 2 deletions
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include/asm-ia64/checksum.h
+6
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@@ -70,4 +70,10 @@ static inline __sum16 csum_fold(__wsum csum)
return (__force __sum16)~sum;
}
#define _HAVE_ARCH_IPV6_CSUM 1
struct in6_addr;
extern unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
struct in6_addr *daddr, __u32 len, unsigned short proto,
unsigned int csum);
#endif /* _ASM_IA64_CHECKSUM_H */