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| author |   Tom Herbert <therbert@google.com> | 2014-05-02 16:28:15 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-05-05 15:26:29 -0400 |
| commit | a278534406ab13e4ecbca8941eb4c104a5971cd7 (patch) | |
| tree | b2d689d4499044d6a5cddd3c9a407047cf350ead /arch | |
| parent | net: Allow csum_add to be provided in arch (diff) | |
| download | linux-dev-a278534406ab13e4ecbca8941eb4c104a5971cd7.tar.xz linux-dev-a278534406ab13e4ecbca8941eb4c104a5971cd7.zip | |
x86_64: csum_add for x86_64
Add csum_add function for x86_64.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/checksum_64.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/checksum_64.h b/arch/x86/include/asm/checksum_64.h index e6fd8a026c7b..3581761bd86c 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 */ |