| /* |
| * 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 |
| */ |
| #define csum_tcpudp_nofold csum_tcpudp_nofold |
| static inline __wsum |
| csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len, |
| __u8 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), |
| #ifdef __MICROBLAZEEL__ |
| "d" ((len + proto) << 8) |
| #else |
| "d" (len + proto) |
| #endif |
| ); |
| return sum; |
| } |
| |
| #include <asm-generic/checksum.h> |
| |
| #endif /* _ASM_MICROBLAZE_CHECKSUM_H */ |
