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/*
* Copyright (C) 2008 Michal Simek <monstr@monstr.eu>
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_MICROBLAZE_CHECKSUM_H
#define _ASM_MICROBLAZE_CHECKSUM_H
/*
* computes the checksum of the TCP/UDP pseudo-header
* returns a 16-bit checksum, already complemented
*/
#define csum_tcpudp_nofold csum_tcpudp_nofold
static inline __wsum
csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
unsigned short proto, __wsum sum)
{
__asm__("add %0, %0, %1\n\t"
"addc %0, %0, %2\n\t"
"addc %0, %0, %3\n\t"
"addc %0, %0, r0\n\t"
: "+&d" (sum)
: "d" (saddr), "d" (daddr),
#ifdef __MICROBLAZEEL__
"d" ((len + proto) << 8)
#else
"d" (len + proto)
#endif
);
return sum;
}
#include <asm-generic/checksum.h>
#endif /* _ASM_MICROBLAZE_CHECKSUM_H */