LXR linux/arch/c6x/include/asm/checksum.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  Copyright (C) 2011 Texas Instruments Incorporated
   4 *  Author: Mark Salter <msalter@redhat.com>
   5 */
   6#ifndef _ASM_C6X_CHECKSUM_H
   7#define _ASM_C6X_CHECKSUM_H
   8
   9static inline __wsum
  10csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
  11                   __u8 proto, __wsum sum)
  12{
  13        unsigned long long tmp;
  14
  15        asm ("add     .d1   %1,%5,%1\n"
  16             "|| addu .l1   %3,%4,%0\n"
  17             "addu    .l1   %2,%0,%0\n"
  18#ifndef CONFIG_CPU_BIG_ENDIAN
  19             "|| shl  .s1   %1,8,%1\n"
  20#endif
  21             "addu    .l1   %1,%0,%0\n"
  22             "add     .l1   %P0,%p0,%2\n"
  23             : "=&a"(tmp), "+a"(len), "+a"(sum)
  24             : "a" (saddr), "a" (daddr), "a" (proto));
  25        return sum;
  26}
  27#define csum_tcpudp_nofold csum_tcpudp_nofold
  28
  29#include <asm-generic/checksum.h>
  30
  31#endif /* _ASM_C6X_CHECKSUM_H */
  32