--- libelwix/inc/elwix/apack.h	2015/06/25 17:53:49	1.10
+++ libelwix/inc/elwix/apack.h	2022/09/26 19:39:23	1.11
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: apack.h,v 1.10 2015/06/25 17:53:49 misho Exp $
+* $Id: apack.h,v 1.11 2022/09/26 19:39:23 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -12,7 +12,7 @@ terms:
 All of the documentation and software included in the ELWIX and AITNET
 Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
 
-Copyright 2004 - 2015
+Copyright 2004 - 2022
 	by Michael Pounov <misho@elwix.org>.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -68,6 +68,7 @@ typedef struct tagRawPacket {
 #define RPACK_OFF(x)		(assert((x)), (x)->r_next - (x)->r_buf)
 #define RPACK_REMAIN(x)		(assert((x)), (x)->r_len - ((x)->r_next - (x)->r_buf))
 #define RPACK_ISEND(x)		(assert((x)), (size_t) ((x)->r_next - (x)->r_buf) >= (x)->r_len)
+#define RPACK_WHEREAMI(x, nx)	(assert((x)), (size_t) (((uint8_t*)(nx)) - (x)->r_buf))
 
 #define RPACK_SET_16(x, n)	do { assert((x)); \
 					*((uint8_t *) (x) + 1) = *((const uint8_t *) (n) + 1); \