| Michal Simek | f11e044 | 2009-03-27 14:25:22 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 Michal Simek <monstr@monstr.eu> |
| 3 | * Copyright (C) 2006 Atmark Techno, Inc. |
| 4 | * |
| 5 | * This file is subject to the terms and conditions of the GNU General Public |
| 6 | * License. See the file "COPYING" in the main directory of this archive |
| 7 | * for more details. |
| 8 | */ |
| 9 | |
| 10 | #ifndef _ASM_MICROBLAZE_CHECKSUM_H |
| 11 | #define _ASM_MICROBLAZE_CHECKSUM_H |
| 12 | |
| Michal Simek | f11e044 | 2009-03-27 14:25:22 +0100 | [diff] [blame] | 13 | /* |
| 14 | * computes the checksum of the TCP/UDP pseudo-header |
| 15 | * returns a 16-bit checksum, already complemented |
| 16 | */ |
| Remis Lima Baima | 14f8738 | 2009-06-18 19:55:32 +0200 | [diff] [blame] | 17 | #define csum_tcpudp_nofold csum_tcpudp_nofold |
| Michal Simek | f11e044 | 2009-03-27 14:25:22 +0100 | [diff] [blame] | 18 | static inline __wsum |
| 19 | csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, |
| 20 | unsigned short proto, __wsum sum) |
| 21 | { |
| 22 | __asm__("add %0, %0, %1\n\t" |
| 23 | "addc %0, %0, %2\n\t" |
| 24 | "addc %0, %0, %3\n\t" |
| 25 | "addc %0, %0, r0\n\t" |
| 26 | : "+&d" (sum) |
| 27 | : "d" (saddr), "d" (daddr), "d" (len + proto)); |
| 28 | |
| 29 | return sum; |
| 30 | } |
| 31 | |
| Remis Lima Baima | 14f8738 | 2009-06-18 19:55:32 +0200 | [diff] [blame] | 32 | #include <asm-generic/checksum.h> |
| Michal Simek | f11e044 | 2009-03-27 14:25:22 +0100 | [diff] [blame] | 33 | |
| 34 | #endif /* _ASM_MICROBLAZE_CHECKSUM_H */ |