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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/ia64/lib/csum_partial_copy.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/ia64/lib/csum_partial_copy.c')
-rw-r--r-- | ANDROID_3.4.5/arch/ia64/lib/csum_partial_copy.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/ANDROID_3.4.5/arch/ia64/lib/csum_partial_copy.c b/ANDROID_3.4.5/arch/ia64/lib/csum_partial_copy.c deleted file mode 100644 index 118daf5a..00000000 --- a/ANDROID_3.4.5/arch/ia64/lib/csum_partial_copy.c +++ /dev/null @@ -1,140 +0,0 @@ -/* - * Network Checksum & Copy routine - * - * Copyright (C) 1999, 2003-2004 Hewlett-Packard Co - * Stephane Eranian <eranian@hpl.hp.com> - * - * Most of the code has been imported from Linux/Alpha - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/string.h> - -#include <asm/uaccess.h> - -/* - * XXX Fixme: those 2 inlines are meant for debugging and will go away - */ -static inline unsigned -short from64to16(unsigned long x) -{ - /* add up 32-bit words for 33 bits */ - x = (x & 0xffffffff) + (x >> 32); - /* add up 16-bit and 17-bit words for 17+c bits */ - x = (x & 0xffff) + (x >> 16); - /* add up 16-bit and 2-bit for 16+c bit */ - x = (x & 0xffff) + (x >> 16); - /* add up carry.. */ - x = (x & 0xffff) + (x >> 16); - return x; -} - -static inline -unsigned long do_csum_c(const unsigned char * buff, int len, unsigned int psum) -{ - int odd, count; - unsigned long result = (unsigned long)psum; - - if (len <= 0) - goto out; - odd = 1 & (unsigned long) buff; - if (odd) { - result = *buff << 8; - len--; - buff++; - } - count = len >> 1; /* nr of 16-bit words.. */ - if (count) { - if (2 & (unsigned long) buff) { - result += *(unsigned short *) buff; - count--; - len -= 2; - buff += 2; - } - count >>= 1; /* nr of 32-bit words.. */ - if (count) { - if (4 & (unsigned long) buff) { - result += *(unsigned int *) buff; - count--; - len -= 4; - buff += 4; - } - count >>= 1; /* nr of 64-bit words.. */ - if (count) { - unsigned long carry = 0; - do { - unsigned long w = *(unsigned long *) buff; - count--; - buff += 8; - result += carry; - result += w; - carry = (w > result); - } while (count); - result += carry; - result = (result & 0xffffffff) + (result >> 32); - } - if (len & 4) { - result += *(unsigned int *) buff; - buff += 4; - } - } - if (len & 2) { - result += *(unsigned short *) buff; - buff += 2; - } - } - if (len & 1) - result += *buff; - - result = from64to16(result); - - if (odd) - result = ((result >> 8) & 0xff) | ((result & 0xff) << 8); - -out: - return result; -} - -/* - * XXX Fixme - * - * This is very ugly but temporary. THIS NEEDS SERIOUS ENHANCEMENTS. - * But it's very tricky to get right even in C. - */ -extern unsigned long do_csum(const unsigned char *, long); - -__wsum -csum_partial_copy_from_user(const void __user *src, void *dst, - int len, __wsum psum, int *errp) -{ - unsigned long result; - - /* XXX Fixme - * for now we separate the copy from checksum for obvious - * alignment difficulties. Look at the Alpha code and you'll be - * scared. - */ - - if (__copy_from_user(dst, src, len) != 0 && errp) - *errp = -EFAULT; - - result = do_csum(dst, len); - - /* add in old sum, and carry.. */ - result += (__force u32)psum; - /* 32+c bits -> 32 bits */ - result = (result & 0xffffffff) + (result >> 32); - return (__force __wsum)result; -} - -EXPORT_SYMBOL(csum_partial_copy_from_user); - -__wsum -csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) -{ - return csum_partial_copy_from_user((__force const void __user *)src, - dst, len, sum, NULL); -} - -EXPORT_SYMBOL(csum_partial_copy_nocheck); |