更新日期: 2022/06/01 来源: https://gitee.com/weharmony/kernel_liteos_a_note
in_cksum.h
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1/*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef __LINUX_CHECKSUM_H__
33#define __LINUX_CHECKSUM_H__
34
35#ifdef __cplusplus
36#if __cplusplus
37extern "C" {
38#endif /* __cplusplus */
39#endif /* __cplusplus */
40
41unsigned int csum_partial(const void *buf, int len, unsigned int wsum);
42unsigned int csum_partial_copy_nocheck(const void *src, void *dst, int len, unsigned int wsum);
43unsigned short in_cksum(const void *buf, int len);
44unsigned short in_cksum_copy(const void *src, void *dst, int len);
45
46#ifdef __cplusplus
47#if __cplusplus
48}
49#endif /* __cplusplus */
50#endif /* __cplusplus */
51
52#endif
in_cksum_copy
unsigned short in_cksum_copy(const void *src, void *dst, int len)
csum_partial
unsigned int csum_partial(const void *buf, int len, unsigned int wsum)
in_cksum
unsigned short in_cksum(const void *buf, int len)
csum_partial_copy_nocheck
unsigned int csum_partial_copy_nocheck(const void *src, void *dst, int len, unsigned int wsum)