From 07064c6e022ba8dc0c86ce12f7851a1de24e04fc Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Fri, 2 May 2014 16:28:03 -0700 Subject: [PATCH] net: Allow csum_add to be provided in arch csum_add is really nothing more then add-with-carry which can be implemented efficiently in some architectures. Allow architecture to define this protected by HAVE_ARCH_CSUM_ADD. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/net/checksum.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/net/checksum.h b/include/net/checksum.h index a28f4e0f6251..87cb1903640d 100644 --- a/include/net/checksum.h +++ b/include/net/checksum.h @@ -57,12 +57,14 @@ static __inline__ __wsum csum_and_copy_to_user } #endif +#ifndef HAVE_ARCH_CSUM_ADD static inline __wsum csum_add(__wsum csum, __wsum addend) { u32 res = (__force u32)csum; res += (__force u32)addend; return (__force __wsum)(res + (res < (__force u32)addend)); } +#endif static inline __wsum csum_sub(__wsum csum, __wsum addend) { -- 2.39.5