From c535e8ae7f6137f8ecda2ec503eee253bab8a67e Mon Sep 17 00:00:00 2001
From: Vladimir Kondratyev <wulf@FreeBSD.org>
Date: Sun, 24 Dec 2023 11:20:00 +0300
Subject: [PATCH] LinuxKPI: Add get_random_u64() function

Sponsored by:	Serenity Cyber Security, LLC
Reviewed by:	manu, bz
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D42816

(cherry picked from commit 7f88d742e578c4cef4e26ce10b9a936e58237964)
---
 sys/compat/linuxkpi/common/include/linux/random.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/random.h b/sys/compat/linuxkpi/common/include/linux/random.h
index 5335cca8251..e87d4412ea4 100644
--- a/sys/compat/linuxkpi/common/include/linux/random.h
+++ b/sys/compat/linuxkpi/common/include/linux/random.h
@@ -87,6 +87,15 @@ get_random_long(void)
 	return (val);
 }
 
+static inline uint64_t
+get_random_u64(void)
+{
+	uint64_t val;
+
+	get_random_bytes(&val, sizeof(val));
+	return (val);
+}
+
 static __inline uint32_t
 prandom_u32(void)
 {