epan/crc10-tvb.c

   1 /* crc10-tvb.c
   2  * CRC-10 tvb routines
   3  *
   4  * Wireshark - Network traffic analyzer
   5  * By Gerald Combs <gerald@wireshark.org>
   6  * Copyright 1998 Gerald Combs
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include "config.h"
  12
  13 #include <glib.h>
  14 #include <epan/tvbuff.h>
  15 #include <wsutil/crc10.h>
  16 #include <epan/crc10-tvb.h>
  17
  18 /* update the data block's CRC-10 remainder one byte at a time */
  19 uint16_t
  20 update_crc10_by_bytes_tvb(uint16_t crc10, tvbuff_t *tvb, int offset, int len)
  21 {
  22     const uint8_t *buf;
  23
  24     tvb_ensure_bytes_exist(tvb, offset, len);  /* len == -1 not allowed */
  25     buf = tvb_get_ptr(tvb, offset, len);
  26
  27     return update_crc10_by_bytes(crc10, buf, len);
  28 }
  29
  30 /*
  31  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
  32  *
  33  * Local variables:
  34  * c-basic-offset: 4
  35  * tab-width: 8
  36  * indent-tabs-mode: nil
  37  * End:
  38  *
  39  * vi: set shiftwidth=4 tabstop=8 expandtab:
  40  * :indentSize=4:tabSize=8:noTabs=true:
  41  */