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#include "asm/uaccess.h"
#include "linux/errno.h"
#include "linux/module.h"
unsigned int arch_csum_partial(const unsigned char *buff, int len, int sum);
unsigned int csum_partial(unsigned char *buff, int len, int sum)
{
return arch_csum_partial(buff, len, sum);
}
EXPORT_SYMBOL(csum_partial);
unsigned int csum_partial_copy_to(const unsigned char *src,
unsigned char __user *dst, int len, int sum,
int *err_ptr)
{
if(copy_to_user(dst, src, len)){
*err_ptr = -EFAULT;
return(-1);
}
return(arch_csum_partial(src, len, sum));
}
unsigned int csum_partial_copy_from(const unsigned char __user *src,
unsigned char *dst, int len, int sum,
int *err_ptr)
{
if(copy_from_user(dst, src, len)){
*err_ptr = -EFAULT;
return(-1);
}
return arch_csum_partial(dst, len, sum);
}
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