diff --git a/sys/compat/linuxkpi/common/include/asm/unaligned.h b/sys/compat/linuxkpi/common/include/asm/unaligned.h
index 8a001ec38c3d..c13089b2c5f4 100644
--- a/sys/compat/linuxkpi/common/include/asm/unaligned.h
+++ b/sys/compat/linuxkpi/common/include/asm/unaligned.h
@@ -1,85 +1,101 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
- * Copyright (c) 2020 The FreeBSD Foundation
+ * Copyright (c) 2020,2023 The FreeBSD Foundation
  *
  * This software was developed by Björn Zeeb under sponsorship from
  * the FreeBSD Foundation.
  *
  * 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, 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 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 AUTHOR 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.
  *
  * $FreeBSD$
  */
 
 #ifndef	_LINUXKPI_ASM_UNALIGNED_H
 #define	_LINUXKPI_ASM_UNALIGNED_H
 
 #include <linux/types.h>
 #include <asm/byteorder.h>
 
 static __inline uint16_t
 get_unaligned_le16(const void *p)
 {
 
 	return (le16_to_cpup((const __le16 *)p));
 }
 
 static __inline uint32_t
 get_unaligned_le32(const void *p)
 {
 
 	return (le32_to_cpup((const __le32 *)p));
 }
 
+static __inline void
+put_unaligned_le16(__le16 v, void *p)
+{
+	__le16 x;
+
+	x = cpu_to_le16(v);
+	memcpy(p, &x, sizeof(x));
+}
+
 static __inline void
 put_unaligned_le32(__le32 v, void *p)
 {
 	__le32 x;
 
 	x = cpu_to_le32(v);
 	memcpy(p, &x, sizeof(x));
 }
 
 static __inline void
 put_unaligned_le64(__le64 v, void *p)
 {
 	__le64 x;
 
 	x = cpu_to_le64(v);
 	memcpy(p, &x, sizeof(x));
 }
 
 static __inline uint16_t
 get_unaligned_be16(const void *p)
 {
 
 	return (be16_to_cpup((const __be16 *)p));
 }
 
 static __inline uint32_t
 get_unaligned_be32(const void *p)
 {
 
 	return (be32_to_cpup((const __be32 *)p));
 }
 
+static __inline uint64_t
+get_unaligned_be64(const void *p)
+{
+
+	return (be64_to_cpup((const __be64 *)p));
+}
+
 #endif	/* _LINUXKPI_ASM_UNALIGNED_H */