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diff --git a/sys/compat/linuxkpi/common/include/linux/math64.h b/sys/compat/linuxkpi/common/include/linux/math64.h
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+++ b/sys/compat/linuxkpi/common/include/linux/math64.h
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+/*-
+ * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2014-2015 Mellanox Technologies, Ltd. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+#ifndef _LINUX_MATH64_H
+#define	_LINUX_MATH64_H
+
+#include <sys/stdint.h>
+
+#define	do_div(n, base) ({			\
+	uint32_t __base = (base);		\
+	uint32_t __rem;				\
+	__rem = ((uint64_t)(n)) % __base;	\
+	(n) = ((uint64_t)(n)) / __base;		\
+	__rem;					\
+})
+
+static inline uint64_t
+div_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder)
+{
+	*remainder = dividend % divisor;
+	return (dividend / divisor);
+}
+
+static inline uint64_t
+div_u64(uint64_t dividend, uint32_t divisor)
+{
+	return (dividend / divisor);
+}
+
+#endif					/* _LINUX_MATH64_H */