2011-04-28 05:36:26 +00:00
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/* crc8.h
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*
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* Checks the checksum (FCS) of the 3G TS 27.010 Multiplexing protocol.
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* The algorithm to check the FCS is described in "3G TS 27.010 V2.0.0 (1999-06)"
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* See: www.3gpp.org/ftp/tsg_t/TSG_T/TSGT_04/docs/PDFs/TP-99119.pdf
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* or: http://www.3gpp.org/ftp/Specs/html-info/27010.htm
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*
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* Polynom: (x^8 + x^2 + x^1 + 1)
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*
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* 2011 Hans-Christoph Schemmel <hans-christoph.schemmel[AT]cinterion.com>
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*
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*
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2011-04-28 15:52:32 +00:00
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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2011-04-28 05:36:26 +00:00
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/**
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* Check the final crc value(Receiver code)
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*
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* \param p The tv buffer containing the data.
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* \param len Number of bytes in the message.
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* \param offset Offset in the message.
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* \param received_fcs The received FCS.
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* \return Returns TRUE if the checksum is correct, FALSE if it is not correct
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*****************************************************************************/
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extern gboolean check_fcs(tvbuff_t *p, guint8 len, guint8 offset, guint8 received_fcs);
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