Wireshark 2.9.0-477-g68ec514b The Wireshark network protocol analyzer

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in_cksum.h
1 /* in_cksum.h
2 * Declaration of Internet checksum routine.
3 *
4 * Copyright (c) 1988, 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * SPDX-License-Identifier: BSD-3-Clause
8 */
9
10 #ifndef __IN_CKSUM_H__
11 #define __IN_CKSUM_H__
12
13 #include "ws_symbol_export.h"
14
15 typedef struct {
16 const guint8 *ptr;
17 int len;
18 } vec_t;
19
20 #define SET_CKSUM_VEC_PTR(vecelem, data, length) \
21 G_STMT_START { \
22 vecelem.ptr = (data); \
23 vecelem.len = (length); \
24 } G_STMT_END
25
26 #define SET_CKSUM_VEC_TVB(vecelem, tvb, offset, length) \
27 G_STMT_START { \
28 vecelem.len = (length); \
29 vecelem.ptr = tvb_get_ptr((tvb), (offset), vecelem.len); \
30 } G_STMT_END
31
32 WS_DLL_PUBLIC guint16 ip_checksum(const guint8 *ptr, int len);
33
34 WS_DLL_PUBLIC guint16 ip_checksum_tvb(tvbuff_t *tvb, int offset, int len);
35
36 WS_DLL_PUBLIC int in_cksum(const vec_t *vec, int veclen);
37
38 guint16 in_cksum_shouldbe(guint16 sum, guint16 computed_sum);
39
40 #endif /* __IN_CKSUM_H__ */
tvbuff
Definition: tvbuff-int.h:35
vec_t
Definition: in_cksum.h:15