Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/epan/crc8-tvb.h b/epan/crc8-tvb.h
new file mode 100644
index 00000000..34892d72
--- /dev/null
+++ b/epan/crc8-tvb.h
@@ -0,0 +1,39 @@
+/** @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 gboolean check_fcs(tvbuff_t *p, guint8 len, guint8 offset, guint8 received_fcs);
+extern guint8 get_crc8_ieee8023_epon(tvbuff_t *p, guint8 len, guint8 offset);
+
+#endif /* __CRC8_TVB_H__ */