checksum.c File Reference

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

Go to the source code of this file.

Macros
#define	SIGN(x, y)   ((0x8000ULL*x)<<y)
#define	CARRY(x, y)   ((0x0002ULL*x)<<y)
#define	SELECT(x, y)   ((0x0001ULL*x)<<y)
#define	VR_NEGATE(a, b, c, d)
#define	VR_CARRY(a, b, c, d)
#define	VR_SELECT(a, b, c, d)

Functions
__sum16	csum_tcpudp_magic (unsigned long saddr, unsigned long daddr, unsigned short len, unsigned short proto, __wsum sum)
__wsum	csum_tcpudp_nofold (unsigned long saddr, unsigned long daddr, unsigned short len, unsigned short proto, __wsum sum)
	EXPORT_SYMBOL (csum_tcpudp_nofold)
unsigned int	do_csum (const void *voidptr, int len)
__wsum	csum_partial_copy_nocheck (const void *src, void *dst, int len, __wsum sum)

Macro Definition Documentation

#define CARRY	(		x,
			y
	)		((0x0002ULL*x)<<y)

Definition at line 35 of file checksum.c.

#define SELECT	(		x,
			y
	)		((0x0001ULL*x)<<y)

Definition at line 36 of file checksum.c.

#define SIGN	(		x,
			y
	)		((0x8000ULL*x)<<y)

Definition at line 34 of file checksum.c.

#define VR_CARRY	(		a,
			b,
			c,
			d
	)

Value:

(CARRY(a, 48) + CARRY(b, 32) + CARRY(c, 16) \
    + CARRY(d, 0))

Definition at line 40 of file checksum.c.

#define VR_NEGATE	(		a,
			b,
			c,
			d
	)

Value:

(SIGN(a, 48) + SIGN(b, 32) + SIGN(c, 16) \
    + SIGN(d, 0))

Definition at line 38 of file checksum.c.

#define VR_SELECT	(		a,
			b,
			c,
			d
	)

Value:

(SELECT(a, 48) + SELECT(b, 32) + SELECT(c, 16) \
    + SELECT(d, 0))

Definition at line 42 of file checksum.c.

Function Documentation

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

Definition at line 199 of file checksum.c.

__sum16 csum_tcpudp_magic	(	unsigned long	saddr,
		unsigned long	daddr,
		unsigned short	len,
		unsigned short	proto,
		__wsum	sum
	)

Definition at line 63 of file checksum.c.

__wsum csum_tcpudp_nofold	(	unsigned long	saddr,
		unsigned long	daddr,
		unsigned short	len,
		unsigned short	proto,
		__wsum	sum
	)

Definition at line 72 of file checksum.c.

unsigned int do_csum	(	const void *	voidptr,
		int	len
	)

Definition at line 100 of file checksum.c.

EXPORT_SYMBOL

(

csum_tcpudp_nofold

)