diff options
Diffstat (limited to 'include/asm-cris/arch-v32/checksum.h')
-rw-r--r-- | include/asm-cris/arch-v32/checksum.h | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/include/asm-cris/arch-v32/checksum.h b/include/asm-cris/arch-v32/checksum.h deleted file mode 100644 index e5dcfce6e0dc..000000000000 --- a/include/asm-cris/arch-v32/checksum.h +++ /dev/null | |||
@@ -1,29 +0,0 @@ | |||
1 | #ifndef _ASM_CRIS_ARCH_CHECKSUM_H | ||
2 | #define _ASM_CRIS_ARCH_CHECKSUM_H | ||
3 | |||
4 | /* | ||
5 | * Check values used in TCP/UDP headers. | ||
6 | * | ||
7 | * The gain of doing this in assembler instead of C, is that C doesn't | ||
8 | * generate carry-additions for the 32-bit components of the | ||
9 | * checksum. Which means it would be necessary to split all those into | ||
10 | * 16-bit components and then add. | ||
11 | */ | ||
12 | static inline __wsum | ||
13 | csum_tcpudp_nofold(__be32 saddr, __be32 daddr, | ||
14 | unsigned short len, unsigned short proto, __wsum sum) | ||
15 | { | ||
16 | __wsum res; | ||
17 | |||
18 | __asm__ __volatile__ ("add.d %2, %0\n\t" | ||
19 | "addc %3, %0\n\t" | ||
20 | "addc %4, %0\n\t" | ||
21 | "addc 0, %0\n\t" | ||
22 | : "=r" (res) | ||
23 | : "0" (sum), "r" (daddr), "r" (saddr), \ | ||
24 | "r" ((len + proto) << 8)); | ||
25 | |||
26 | return res; | ||
27 | } | ||
28 | |||
29 | #endif /* _ASM_CRIS_ARCH_CHECKSUM_H */ | ||