diff options
Diffstat (limited to 'arch/powerpc/include/asm/checksum.h')
| -rw-r--r-- | arch/powerpc/include/asm/checksum.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/checksum.h b/arch/powerpc/include/asm/checksum.h index 350de8f90250..ab3832b93f0a 100644 --- a/arch/powerpc/include/asm/checksum.h +++ b/arch/powerpc/include/asm/checksum.h @@ -112,6 +112,13 @@ static __always_inline __wsum csum_add(__wsum csum, __wsum addend) #endif } +#define HAVE_ARCH_CSUM_SHIFT +static __always_inline __wsum csum_shift(__wsum sum, int offset) +{ + /* rotate sum to align it with a 16b boundary */ + return (__force __wsum)rol32((__force u32)sum, (offset & 1) << 3); +} + /* * This is a version of ip_compute_csum() optimized for IP headers, * which always checksum on 4 octet boundaries. ihl is the number |