New upstream version 18.05

[deb_dpdk.git] / drivers / net / nfp / nfpcore / nfp_crc.h

diff --git a/drivers/net/nfp/nfpcore/nfp_crc.h b/drivers/net/nfp/nfpcore/nfp_crc.h
new file mode 100644 (file)
index 0000000..f99c89f
--- /dev/null
+++ b/drivers/net/nfp/nfpcore/nfp_crc.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Netronome Systems, Inc.
+ * All rights reserved.
+ */
+
+#ifndef __NFP_CRC_H__
+#define __NFP_CRC_H__
+
+/*
+ * There are multiple 16-bit CRC polynomials in common use, but this is
+ * *the* standard CRC-32 polynomial, first popularized by Ethernet.
+ * x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x^1+x^0
+ */
+#define CRCPOLY_LE 0xedb88320
+#define CRCPOLY_BE 0x04c11db7
+
+uint32_t nfp_crc32_posix(const void *buff, size_t len);
+
+#endif