1 files changed, 78 insertions, 0 deletions
diff --git a/src/spdk/include/spdk/crc16.h b/src/spdk/include/spdk/crc16.h
new file mode 100644
index 000000000..053fbd5e4
--- /dev/null
+++ b/src/spdk/include/spdk/crc16.h
@@ -0,0 +1,78 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) Intel Corporation.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ * CRC-16 utility functions
+ */
+
+#ifndef SPDK_CRC16_H
+#define SPDK_CRC16_H
+
+#include "spdk/stdinc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * T10-DIF CRC-16 polynomial
+ */
+#define SPDK_T10DIF_CRC16_POLYNOMIAL 0x8bb7u
+
+/**
+ * Calculate T10-DIF CRC-16 checksum.
+ *
+ * \param init_crc Initial CRC-16 value.
+ * \param buf Data buffer to checksum.
+ * \param len Length of buf in bytes.
+ * \return CRC-16 value.
+ */
+uint16_t spdk_crc16_t10dif(uint16_t init_crc, const void *buf, size_t len);
+
+/**
+ * Calculate T10-DIF CRC-16 checksum and copy data.
+ *
+ * \param init_crc Initial CRC-16 value.
+ * \param dst Destination data buffer for copy.
+ * \param src Source data buffer for CRC calculation and copy.
+ * \param len Length of buffer in bytes.
+ * \return CRC-16 value.
+ */
+uint16_t spdk_crc16_t10dif_copy(uint16_t init_crc, uint8_t *dst, uint8_t *src,
+				size_t len);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SPDK_CRC16_H */