diff options
Diffstat (limited to 'arch/cris/include/arch-v10/arch/checksum.h')
| -rw-r--r-- | arch/cris/include/arch-v10/arch/checksum.h | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/arch/cris/include/arch-v10/arch/checksum.h b/arch/cris/include/arch-v10/arch/checksum.h deleted file mode 100644 index eb186be4fb32..000000000000 --- a/arch/cris/include/arch-v10/arch/checksum.h +++ /dev/null @@ -1,30 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _CRIS_ARCH_CHECKSUM_H -#define _CRIS_ARCH_CHECKSUM_H - -/* Checksum some values used in TCP/UDP headers. - * - * The gain by doing this in asm is that C will not generate carry-additions - * for the 32-bit components of the checksum, so otherwise we would have had - * to split all of those into 16-bit components, then add. - */ - -static inline __wsum -csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len, - __u8 proto, __wsum sum) -{ - __wsum res; - __asm__ ("add.d %2, %0\n\t" - "ax\n\t" - "add.d %3, %0\n\t" - "ax\n\t" - "add.d %4, %0\n\t" - "ax\n\t" - "addq 0, %0\n" - : "=r" (res) - : "0" (sum), "r" (daddr), "r" (saddr), "r" ((len + proto) << 8)); - - return res; -} - -#endif |