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asm-generic headers: Allow yet more arch overrides in checksum.h

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arches can have more efficient implementation of these routines

Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>
This commit is contained in:
Vineet Gupta 2013-01-18 15:12:16 +05:30
commit 64e69073c3
2 changed files with 6 additions and 0 deletions
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2
lib/checksum.c
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@ -102,6 +102,7 @@ out:
}
#endif
#ifndef ip_fast_csum
/*
* This is a version of ip_compute_csum() optimized for IP headers,
* which always checksum on 4 octet boundaries.
@ -111,6 +112,7 @@ __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
return (__force __sum16)~do_csum(iph, ihl*4);
}
EXPORT_SYMBOL(ip_fast_csum);
#endif
/*
* computes the checksum of a memory block at buff, length len,