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| author | Charlie Jenkins <charlie@rivosinc.com> | 2024-01-08 15:57:05 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-17 17:52:32 -0800 |
| commit | a04c192eabfb76824d00f1b4cd0f25844a59d0f0 (patch) | |
| tree | 4958cc44bee3652ebefe01c374dd058151d58b36 /arch/riscv/include/asm | |
| parent | e11e367e9fe57164ea609807ed27184c85263355 (diff) | |
| download | linux-a04c192eabfb76824d00f1b4cd0f25844a59d0f0.tar.gz linux-a04c192eabfb76824d00f1b4cd0f25844a59d0f0.tar.bz2 linux-a04c192eabfb76824d00f1b4cd0f25844a59d0f0.zip | |
riscv: Add checksum library
Provide a 32 and 64 bit version of do_csum. When compiled for 32-bit
will load from the buffer in groups of 32 bits, and when compiled for
64-bit will load in groups of 64 bits.
Additionally provide riscv optimized implementation of csum_ipv6_magic.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Xiao Wang <xiao.w.wang@intel.com>
Link: https://lore.kernel.org/r/20240108-optimize_checksum-v15-4-1c50de5f2167@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/asm')
| -rw-r--r-- | arch/riscv/include/asm/checksum.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/checksum.h b/arch/riscv/include/asm/checksum.h index 5a810126aac7..a5b60b54b101 100644 --- a/arch/riscv/include/asm/checksum.h +++ b/arch/riscv/include/asm/checksum.h @@ -12,6 +12,17 @@ #define ip_fast_csum ip_fast_csum +extern unsigned int do_csum(const unsigned char *buff, int len); +#define do_csum do_csum + +/* Default version is sufficient for 32 bit */ +#ifndef CONFIG_32BIT +#define _HAVE_ARCH_IPV6_CSUM +__sum16 csum_ipv6_magic(const struct in6_addr *saddr, + const struct in6_addr *daddr, + __u32 len, __u8 proto, __wsum sum); +#endif + /* Define riscv versions of functions before importing asm-generic/checksum.h */ #include <asm-generic/checksum.h> |