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| author | Aurelien Jacquiot <a-jacquiot@ti.com> | 2011-10-04 17:15:51 +0200 |
|---|---|---|
| committer | Mark Salter <msalter@redhat.com> | 2011-10-07 01:48:23 +0200 |
| commit | 09831ca73443bd819ad7993db5409b19c899ba33 (patch) | |
| tree | 4558fb0a5e0e1fcd8582be2155cd9c7498e429db /arch/c6x/include/asm/checksum.h | |
| parent | C6X: headers (diff) | |
| download | linux-09831ca73443bd819ad7993db5409b19c899ba33.tar.xz linux-09831ca73443bd819ad7993db5409b19c899ba33.zip | |
C6X: library code
Original port to early 2.6 kernel using TI COFF toolchain.
Brought up to date by Mark Salter <msalter@redhat.com>
Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/c6x/include/asm/checksum.h')
| -rw-r--r-- | arch/c6x/include/asm/checksum.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/c6x/include/asm/checksum.h b/arch/c6x/include/asm/checksum.h new file mode 100644 index 000000000000..7246816d6e4d --- /dev/null +++ b/arch/c6x/include/asm/checksum.h @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2011 Texas Instruments Incorporated + * Author: Mark Salter <msalter@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _ASM_C6X_CHECKSUM_H +#define _ASM_C6X_CHECKSUM_H + +static inline __wsum +csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, + unsigned short proto, __wsum sum) +{ + unsigned long long tmp; + + asm ("add .d1 %1,%5,%1\n" + "|| addu .l1 %3,%4,%0\n" + "addu .l1 %2,%0,%0\n" +#ifndef CONFIG_CPU_BIG_ENDIAN + "|| shl .s1 %1,8,%1\n" +#endif + "addu .l1 %1,%0,%0\n" + "add .l1 %P0,%p0,%2\n" + : "=&a"(tmp), "+a"(len), "+a"(sum) + : "a" (saddr), "a" (daddr), "a" (proto)); + return sum; +} +#define csum_tcpudp_nofold csum_tcpudp_nofold + +#include <asm-generic/checksum.h> + +#endif /* _ASM_C6X_CHECKSUM_H */ |