checksum.c File Reference

#include <linux/module.h>
#include <linux/types.h>
#include <net/checksum.h>
#include <asm/byteorder.h>
#include <asm/string.h>
#include <asm/uaccess.h>

Go to the source code of this file.

Macros
#define	addc(_t, _r)

Functions
__wsum	csum_partial (const void *buff, int len, __wsum sum)
	EXPORT_SYMBOL (csum_partial)
__wsum	csum_partial_copy_nocheck (const void *src, void *dst, int len, __wsum sum)
	EXPORT_SYMBOL (csum_partial_copy_nocheck)
__wsum	csum_partial_copy_from_user (const void __user *src, void *dst, int len, __wsum sum, int *err_ptr)
	EXPORT_SYMBOL (csum_partial_copy_from_user)

Macro Definition Documentation

#define addc	(		_t,
			_r
	)

Value:

__asm__ __volatile__ (          \
"       add             %0, %1, %0\n"   \
"       addc            %0, %%r0, %0\n" \
    : "=r"(_t)                      \
    : "r"(_r), "0"(_t));

Definition at line 25 of file checksum.c.

Function Documentation

__wsum csum_partial	(	const void *	buff,
		int	len,
		__wsum	sum
	)

csum_partial - Compute an internet checksum. : buffer to be checksummed : length of buffer. : initial sum to be added in (32bit unfolded)

Returns the 32bit unfolded internet checksum of the buffer. Before filling it in it needs to be csum_fold()'ed. buff should be aligned to a 64bit boundary if possible.

Definition at line 105 of file checksum.c.

__wsum csum_partial_copy_from_user	(	const void __user *	src,
		void *	dst,
		int	len,
		__wsum	sum,
		int *	err_ptr
	)

Definition at line 135 of file checksum.c.

__wsum csum_partial_copy_nocheck	(	const void *	src,
		void *	dst,
		int	len,
		__wsum	sum
	)

Definition at line 117 of file checksum.c.

EXPORT_SYMBOL

(

csum_partial

)

EXPORT_SYMBOL

(

csum_partial_copy_nocheck

)

EXPORT_SYMBOL

(

csum_partial_copy_from_user

)