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/** @file
*
* Checks the checksum (FCS) of the 3G TS 27.010 Multiplexing protocol.
* The algorithm to check the FCS is described in "3G TS 27.010 V2.0.0 (1999-06)"
* See: www.3gpp.org/ftp/tsg_t/TSG_T/TSGT_04/docs/PDFs/TP-99119.pdf
* or: http://www.3gpp.org/ftp/Specs/html-info/27010.htm
*
* Polynom: (x^8 + x^2 + x^1 + 1)
*
* 2011 Hans-Christoph Schemmel <hans-christoph.schemmel[AT]cinterion.com>
* 2014 Philip Rosenberg-Watt <p.rosenberg-watt[at]cablelabs.com>
* + Added CRC-8 for IEEE 802.3 EPON, with shift register initialized to 0x00
* See IEEE Std 802.3-2012 Section 5, Clause 65.1.3.2.3.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/**
* Check the final crc value(Receiver code)
*
* \param p The tv buffer containing the data.
* \param len Number of bytes in the message.
* \param offset Offset in the message.
* \param received_fcs The received FCS.
* \return Returns true if the checksum is correct, false if it is not correct
*****************************************************************************/
#ifndef __CRC8_TVB_H__
#define __CRC8_TVB_H__
extern bool check_fcs(tvbuff_t *p, uint8_t len, uint8_t offset, uint8_t received_fcs);
extern uint8_t get_crc8_ieee8023_epon(tvbuff_t *p, uint8_t len, uint8_t offset);
#endif /* __CRC8_TVB_H__ */
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