checksum_64.h File Reference

#include <linux/compiler.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>

Go to the source code of this file.

Macros
#define	_HAVE_ARCH_COPY_AND_CSUM_FROM_USER   1
#define	HAVE_CSUM_COPY_USER   1
#define	csum_and_copy_to_user   csum_partial_copy_to_user
#define	csum_and_copy_from_user   csum_partial_copy_from_user
#define	_HAVE_ARCH_IPV6_CSUM   1

Functions
__wsum	csum_partial (const void *buff, int len, __wsum sum)
__wsum	csum_partial_copy_generic (const void *src, const void *dst, int len, __wsum sum, int *src_err_ptr, int *dst_err_ptr)
__wsum	csum_partial_copy_from_user (const void __user *src, void *dst, int len, __wsum isum, int *errp)
__wsum	csum_partial_copy_to_user (const void *src, void __user *dst, int len, __wsum isum, int *errp)
__wsum	csum_partial_copy_nocheck (const void *src, void *dst, int len, __wsum sum)
__sum16	ip_compute_csum (const void *buff, int len)
__sum16	csum_ipv6_magic (const struct in6_addr *saddr, const struct in6_addr *daddr, __u32 len, unsigned short proto, __wsum sum)

Macro Definition Documentation

#define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER   1

Definition at line 131 of file checksum_64.h.

#define _HAVE_ARCH_IPV6_CSUM   1

Definition at line 177 of file checksum_64.h.

#define csum_and_copy_from_user   csum_partial_copy_from_user

Definition at line 150 of file checksum_64.h.

#define csum_and_copy_to_user   csum_partial_copy_to_user

Definition at line 149 of file checksum_64.h.

#define HAVE_CSUM_COPY_USER   1

Definition at line 132 of file checksum_64.h.

Function Documentation

__sum16 csum_ipv6_magic	(	const struct in6_addr *	saddr,
		const struct in6_addr *	daddr,
		__u32	len,
		unsigned short	proto,
		__wsum	sum
	)

Definition at line 129 of file csum-wrappers_64.c.

__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 164 of file checksum.c.

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

csum_partial_copy_from_user - Copy and checksum from user space. : source address (user space) : destination address : number of bytes to be copied. : initial sum that is added into the result (32bit unfolded) : set to -EFAULT for an bad source address.

Returns an 32bit unfolded checksum of the buffer. src and dst are best aligned to 64bits.

Definition at line 333 of file csum_partial_copy.c.

__wsum csum_partial_copy_generic	(	const void *	src,
		const void *	dst,
		int	len,
		__wsum	sum,
		int *	src_err_ptr,
		int *	dst_err_ptr
	)

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

csum_partial_copy_nocheck - Copy and checksum. : source address : destination address : number of bytes to be copied. : initial sum that is added into the result (32bit unfolded)

Returns an 32bit unfolded checksum of the buffer.

Definition at line 374 of file csum_partial_copy.c.

__wsum csum_partial_copy_to_user	(	const void *	src,
		void __user *	dst,
		int	len,
		__wsum	isum,
		int *	errp
	)

csum_partial_copy_to_user - Copy and checksum to user space. : source address : destination address (user space) : number of bytes to be copied. : initial sum that is added into the result (32bit unfolded) : set to -EFAULT for an bad destination address.

Returns an 32bit unfolded checksum of the buffer. src and dst are best aligned to 64bits.

Definition at line 82 of file csum-wrappers_64.c.

__sum16 ip_compute_csum	(	const void *	buff,
		int	len
	)

ip_compute_csum - Compute an 16bit IP checksum. : buffer address. : length of buffer.

Returns the 16bit folded/inverted checksum of the passed buffer. Ready to fill in.

Definition at line 181 of file checksum.c.