projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 96f1050d RG |
1 | /* |
| 2 | * Copyright 2004-2009 Analog Devices Inc. | |
| 3 | * akbar.hussain@lineo.com | |
| 4 | * | |
| 5 | * Licensed under the GPL-2 or later. | |
| 6 | */ | |
| 7 | ||
| 1394f032 BW |
8 | #ifndef _BFIN_CHECKSUM_H |
| 9 | #define _BFIN_CHECKSUM_H | |
| 10 | ||
| 1394f032 BW |
11 | /* |
| 12 | * computes the checksum of the TCP/UDP pseudo-header | |
| 13 | * returns a 16-bit checksum, already complemented | |
| 14 | */ | |
| 15 | ||
| 45b3947c | 16 | static inline __wsum |
| ddf9ddac | 17 | __csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, |
| 45b3947c | 18 | unsigned short proto, __wsum sum) |
| 1394f032 | 19 | { |
| aa9c33b4 MH |
20 | unsigned int carry; |
| 21 | ||
| 22 | __asm__ ("%0 = %0 + %2;\n\t" | |
| 23 | "CC = AC0;\n\t" | |
| 24 | "%1 = CC;\n\t" | |
| 25 | "%0 = %0 + %1;\n\t" | |
| 26 | "%0 = %0 + %3;\n\t" | |
| 27 | "CC = AC0;\n\t" | |
| 28 | "%1 = CC;\n\t" | |
| 29 | "%0 = %0 + %1;\n\t" | |
| 30 | "%0 = %0 + %4;\n\t" | |
| 31 | "CC = AC0;\n\t" | |
| 32 | "%1 = CC;\n\t" | |
| 33 | "%0 = %0 + %1;\n\t" | |
| 34 | : "=d" (sum), "=&d" (carry) | |
| 35 | : "d" (daddr), "d" (saddr), "d" ((len + proto) << 8), "0"(sum) | |
| 36 | : "CC"); | |
| 1394f032 BW |
37 | |
| 38 | return (sum); | |
| 39 | } | |
| ddf9ddac | 40 | #define csum_tcpudp_nofold __csum_tcpudp_nofold |
| 1394f032 | 41 | |
| ddf9ddac | 42 | #include <asm-generic/checksum.h> |
| 1394f032 | 43 | |
| ddf9ddac | 44 | #endif |