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lib
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4.4.0-1128-aws
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build
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arch
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blackfin
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include
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asm
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Filename :
checksum.h
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/* * Copyright 2004-2009 Analog Devices Inc. * akbar.hussain@lineo.com * * Licensed under the GPL-2 or later. */ #ifndef _BFIN_CHECKSUM_H #define _BFIN_CHECKSUM_H /* * computes the checksum of the TCP/UDP pseudo-header * returns a 16-bit checksum, already complemented */ static inline __wsum __csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, unsigned short proto, __wsum sum) { unsigned int carry; __asm__ ("%0 = %0 + %2;\n\t" "CC = AC0;\n\t" "%1 = CC;\n\t" "%0 = %0 + %1;\n\t" "%0 = %0 + %3;\n\t" "CC = AC0;\n\t" "%1 = CC;\n\t" "%0 = %0 + %1;\n\t" "%0 = %0 + %4;\n\t" "CC = AC0;\n\t" "%1 = CC;\n\t" "%0 = %0 + %1;\n\t" : "=d" (sum), "=&d" (carry) : "d" (daddr), "d" (saddr), "d" ((len + proto) << 8), "0"(sum) : "CC"); return (sum); } #define csum_tcpudp_nofold __csum_tcpudp_nofold #include <asm-generic/checksum.h> #endif