Index: head/sys/compat/linuxkpi/common/include/linux/random.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/linux/random.h	(revision 361418)
+++ head/sys/compat/linuxkpi/common/include/linux/random.h	(revision 361419)
@@ -1,65 +1,71 @@
 /*-
  * Copyright (c) 2010 Isilon Systems, Inc.
  * Copyright (c) 2010 iX Systems, Inc.
  * Copyright (c) 2010 Panasas, Inc.
  * Copyright (c) 2013-2016 Mellanox Technologies, Ltd.
  * 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_RANDOM_H_
 #define	_LINUX_RANDOM_H_
 
 #include <sys/random.h>
 #include <sys/libkern.h>
 
 #define	get_random_u32() get_random_int()
 
 static inline void
 get_random_bytes(void *buf, int nbytes)
 {
 
 	arc4random_buf(buf, nbytes);
 }
 
 static inline u_int
 get_random_int(void)
 {
 	u_int val;
 
 	get_random_bytes(&val, sizeof(val));
 	return (val);
 }
 
 static inline u_long
 get_random_long(void)
 {
 	u_long val;
 
 	get_random_bytes(&val, sizeof(val));
 	return (val);
 }
 
+static inline u32
+prandom_u32_max(u32 max)
+{
+	return (arc4random_uniform(max));
+}
+
 #endif /* _LINUX_RANDOM_H_ */