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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/ia64/lib/csum_partial_copy.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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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.c140
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);