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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, __u32 len,
- __u8 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
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