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x86_64: csum_add for x86_64

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Add csum_add function for x86_64.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2014-05-02 16:28:15 -07:00 committed by David S. Miller
parent 07064c6e02
commit a278534406
1 changed files with 7 additions and 0 deletions
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7
arch/x86/include/asm/checksum_64.h
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@ -188,4 +188,11 @@ static inline unsigned add32_with_carry(unsigned a, unsigned b)
return a;
}
#define HAVE_ARCH_CSUM_ADD
static inline __wsum csum_add(__wsum csum, __wsum addend)
{
return (__force __wsum)add32_with_carry((__force unsigned)csum,
(__force unsigned)addend);
}
#endif /* _ASM_X86_CHECKSUM_64_H */