tjh.dev
Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
4 */
5
6#ifndef _ASM_CHECKSUM_H
7#define _ASM_CHECKSUM_H
8
9#define do_csum do_csum
10unsigned int do_csum(const void *voidptr, int len);
11
12/*
13 * the same as csum_partial, but copies from src while it
14 * checksums
15 *
16 * here even more important to align src and dst on a 32-bit (or even
17 * better 64-bit) boundary
18 */
19#define csum_partial_copy_nocheck csum_partial_copy_nocheck
20__wsum csum_partial_copy_nocheck(const void *src, void *dst,
21 int len, __wsum sum);
22
23/*
24 * computes the checksum of the TCP/UDP pseudo-header
25 * returns a 16-bit checksum, already complemented
26 */
27#define csum_tcpudp_nofold csum_tcpudp_nofold
28__wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
29 __u32 len, __u8 proto, __wsum sum);
30
31#define csum_tcpudp_magic csum_tcpudp_magic
32__sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
33 __u32 len, __u8 proto, __wsum sum);
34
35#include <asm-generic/checksum.h>
36
37#endif