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sparc: csum_add for Sparc

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Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2014-05-02 16:28:54 -07:00 committed by David S. Miller
parent 4405b4d635
commit 20fce54fa7
2 changed files with 24 additions and 0 deletions
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12
arch/sparc/include/asm/checksum_32.h
View file

@ -238,4 +238,16 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
return csum_fold(csum_partial(buff, len, 0));
}
#define HAVE_ARCH_CSUM_ADD
static inline __wsum csum_add(__wsum csum, __wsum addend)
{
__asm__ __volatile__(
"addcc %0, %1, %0\n"
"addx %0, %%g0, %0"
: "=r" (csum)
: "r" (addend), "0" (csum));
return csum;
}
#endif /* !(__SPARC_CHECKSUM_H) */

12
arch/sparc/include/asm/checksum_64.h
View file

@ -164,4 +164,16 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
return csum_fold(csum_partial(buff, len, 0));
}
#define HAVE_ARCH_CSUM_ADD
static inline __wsum csum_add(__wsum csum, __wsum addend)
{
__asm__ __volatile__(
"addcc %0, %1, %0\n"
"addx %0, %%g0, %0"
: "=r" (csum)
: "r" (addend), "0" (csum));
return csum;
}
#endif /* !(__SPARC64_CHECKSUM_H) */