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author | Stig Bjørlykke <stig@bjorlykke.org> | 2011-08-30 13:46:42 +0000 |
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committer | Stig Bjørlykke <stig@bjorlykke.org> | 2011-08-30 13:46:42 +0000 |
commit | 4132d40e50c576ae6cf9e03e4f552ea091035626 (patch) | |
tree | 4b1f8343011ca58ba5cd44782166f029cc7e3a8b /wsutil/crc8.h | |
parent | bb67b92a14c502e2c9841863dbbef869818f3e58 (diff) |
Move all crc routines to libwsutil.
This way we can use the crc routines in wiretap.
svn path=/trunk/; revision=38800
Diffstat (limited to 'wsutil/crc8.h')
-rw-r--r-- | wsutil/crc8.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/wsutil/crc8.h b/wsutil/crc8.h new file mode 100644 index 0000000000..d8268ba9ab --- /dev/null +++ b/wsutil/crc8.h @@ -0,0 +1,44 @@ +/* crc8.h + * + * 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> + * + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + + +/** + * 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 + *****************************************************************************/ +extern gboolean check_fcs(tvbuff_t *p, guint8 len, guint8 offset, guint8 received_fcs); |