1/*
2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
3 * 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,
9 *    this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 *    this list of conditions and the following disclaimer in the documentation
12 *    and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
25 * OF SUCH DAMAGE.
26 *
27 * This file is part of the lwIP TCP/IP stack.
28 *
29 * Author: Adam Dunkels <adam@sics.se>
30 *
31 */
32#ifndef __LWIP_INET_CHKSUM_H__
33#define __LWIP_INET_CHKSUM_H__
34
35#include "lwip/opt.h"
36
37#include "lwip/pbuf.h"
38#include "lwip/ip_addr.h"
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44    u16_t inet_chksum(void *dataptr, u16_t len);
45    u16_t inet_chksum_pbuf(struct pbuf *p);
46    u16_t inet_chksum_pseudo(struct pbuf *p,
47                             struct ip_addr *src, struct ip_addr *dest,
48                             u8_t proto, u16_t proto_len);
49    u16_t inet_chksum_pseudo_partial(struct pbuf *p,
50                                     struct ip_addr *src, struct ip_addr *dest,
51                                     u8_t proto, u16_t proto_len,
52                                     u16_t chksum_len);
53
54#ifdef __cplusplus
55}
56#endif
57#endif                          /* __LWIP_INET_H__ */
58