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Diffstat (limited to '')
-rw-r--r-- | epan/in_cksum.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/epan/in_cksum.h b/epan/in_cksum.h new file mode 100644 index 00000000..d0f6fdd6 --- /dev/null +++ b/epan/in_cksum.h @@ -0,0 +1,42 @@ +/** @file + * Declaration of Internet checksum routine. + * + * Copyright (c) 1988, 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef __IN_CKSUM_H__ +#define __IN_CKSUM_H__ + +#include "ws_symbol_export.h" + +typedef struct { + const guint8 *ptr; + int len; +} vec_t; + +#define SET_CKSUM_VEC_PTR(vecelem, data, length) \ + G_STMT_START { \ + vecelem.ptr = (data); \ + vecelem.len = (length); \ + } G_STMT_END + +#define SET_CKSUM_VEC_TVB(vecelem, tvb, offset, length) \ + G_STMT_START { \ + vecelem.len = (length); \ + vecelem.ptr = tvb_get_ptr((tvb), (offset), vecelem.len); \ + } G_STMT_END + +WS_DLL_PUBLIC guint16 ip_checksum(const guint8 *ptr, int len); + +WS_DLL_PUBLIC guint16 ip_checksum_tvb(tvbuff_t *tvb, int offset, int len); + +WS_DLL_PUBLIC int in_cksum_ret_partial(const vec_t *vec, int veclen, uint16_t *partial); + +WS_DLL_PUBLIC int in_cksum(const vec_t *vec, int veclen); + +guint16 in_cksum_shouldbe(guint16 sum, guint16 computed_sum); + +#endif /* __IN_CKSUM_H__ */ |