From a278534406ab13e4ecbca8941eb4c104a5971cd7 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Fri, 2 May 2014 16:28:15 -0700 Subject: [PATCH] x86_64: csum_add for x86_64 Add csum_add function for x86_64. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- arch/x86/include/asm/checksum_64.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/include/asm/checksum_64.h b/arch/x86/include/asm/checksum_64.h index e6fd8a0..3581761 100644 --- a/arch/x86/include/asm/checksum_64.h +++ b/arch/x86/include/asm/checksum_64.h @@ -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 */ -- 2.7.4