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original_kernel/arch/microblaze/include/asm/checksum.h

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microblaze_v8: checksum support Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 21:25:22 +08:00
/*
* 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
*/
microblaze: use the generic lib/checksum.c The microblaze checksum code is mostly identical to the asm-generic+lib version, so use that instead. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-06-19 01:55:32 +08:00
#define csum_tcpudp_nofold csum_tcpudp_nofold
microblaze_v8: checksum support Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 21:25:22 +08:00
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), "d" (len + proto));
return sum;
}
microblaze: use the generic lib/checksum.c The microblaze checksum code is mostly identical to the asm-generic+lib version, so use that instead. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-06-19 01:55:32 +08:00
#include <asm-generic/checksum.h>
microblaze_v8: checksum support Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 21:25:22 +08:00
#endif /* _ASM_MICROBLAZE_CHECKSUM_H */