Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 40 insertions, 0 deletions

diff --git a/wsutil/crc5.h b/wsutil/crc5.h
new file mode 100644
index 00000000..4f834d53
--- /dev/null
+++ b/wsutil/crc5.h
@@ -0,0 +1,40 @@
+/** @file
+ * Declaration of CRC-5 routines and table
+ *
+ * 2019 Tomasz Mon <desowin@gmail.com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#ifndef __CRC5_H__
+#define __CRC5_H__
+
+#include <wireshark.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** Compute the 5-bit CRC value of a input value matching the CRC-5
+ defined in USB 2.0 Specification. This function calculates the CRC
+ on low 11 bits of the input value. High bits are ignored.
+ @param input Source data for which the CRC-5 should be calculated.
+ @return the CRC5 checksum for input value */
+WS_DLL_PUBLIC uint8_t crc5_usb_11bit_input(uint16_t input);
+
+/** Compute the 5-bit CRC value of a input value matching the CRC-5
+ defined in USB 2.0 Specification. This function calculates the CRC
+ on low 19 bits of the input value. High bits are ignored.
+ @param input Source data for which the CRC-5 should be calculated.
+ @return the CRC5 checksum for input value */
+WS_DLL_PUBLIC uint8_t crc5_usb_19bit_input(uint32_t input);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __CRC5_H__ */