41 lines
958 B
C
41 lines
958 B
C
/* in_cksum.h
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* Declaration of Internet checksum routine.
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*
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* Copyright (c) 1988, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __IN_CKSUM_H__
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#define __IN_CKSUM_H__
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#include "ws_symbol_export.h"
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typedef struct {
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const guint8 *ptr;
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int len;
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} vec_t;
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#define SET_CKSUM_VEC_PTR(vecelem, data, length) \
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G_STMT_START { \
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vecelem.ptr = (data); \
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vecelem.len = (length); \
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} G_STMT_END
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#define SET_CKSUM_VEC_TVB(vecelem, tvb, offset, length) \
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G_STMT_START { \
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vecelem.len = (length); \
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vecelem.ptr = tvb_get_ptr((tvb), (offset), vecelem.len); \
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} G_STMT_END
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WS_DLL_PUBLIC guint16 ip_checksum(const guint8 *ptr, int len);
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WS_DLL_PUBLIC guint16 ip_checksum_tvb(tvbuff_t *tvb, int offset, int len);
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WS_DLL_PUBLIC int in_cksum(const vec_t *vec, int veclen);
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guint16 in_cksum_shouldbe(guint16 sum, guint16 computed_sum);
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#endif /* __IN_CKSUM_H__ */
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