--- zzzz-none-000/linux-4.9.279/include/linux/socket.h	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/include/linux/socket.h	2023-02-08 11:43:43.000000000 +0000
@@ -202,8 +202,9 @@
 #define AF_VSOCK	40	/* vSockets			*/
 #define AF_KCM		41	/* Kernel Connection Multiplexor*/
 #define AF_QIPCRTR	42	/* Qualcomm IPC Router          */
+#define AF_HWMBOX	43	/* Intel's HW_MBOX sockets	*/
 
-#define AF_MAX		43	/* For now.. */
+#define AF_MAX		44	/* For now.. */
 
 /* Protocol families, same as address families. */
 #define PF_UNSPEC	AF_UNSPEC
@@ -251,6 +252,7 @@
 #define PF_VSOCK	AF_VSOCK
 #define PF_KCM		AF_KCM
 #define PF_QIPCRTR	AF_QIPCRTR
+#define PF_HWMBOX	AF_HWMBOX
 #define PF_MAX		AF_MAX
 
 /* Maximum queue length specifiable by listen.  */