--- libaitio/inc/aitio.h	2013/09/02 11:16:27	1.35
+++ libaitio/inc/aitio.h	2013/10/21 21:12:41	1.36
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: aitio.h,v 1.35 2013/09/02 11:16:27 misho Exp $
+* $Id: aitio.h,v 1.36 2013/10/21 21:12:41 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -71,7 +71,12 @@ SUCH DAMAGE.
 #define IO_SOCK_ROLE_CLIENT	0
 #define IO_SOCK_ROLE_SERVER	1
 
+#define IO_ETHER_FILTER_PROMISC	0
+#define IO_ETHER_FILTER_NOTREAD	-1
+#define IO_ETHER_FILTER_READ	1
+#define IO_ETHER_FILTER_WRITE	2
 
+
 typedef struct tagCliSock sock_cli_t;
 typedef void *(*sock_cb_t)(sock_cli_t*);
 struct tagCliSock {
@@ -492,6 +497,18 @@ int io_etherOpen(const char *csIface, int flags, int w
  * return: none
  */
 void io_etherClose(int eth, void **zcbuf);
+
+/*
+ * io_etherFilter() - BPF filter routine
+ *
+ * @eth = bpf handle
+ * @io = filter direction 
+ *  (IO_ETHER_FILTER_PROMISC|IO_ETHER_FILTER_NOTREAD|IO_ETHER_FILTER_READ|IO_ETHER_FILTER_WRITE)
+ * @insn = BPF filter instruction array
+ * @insnlen = Length of BPF filter instruction array
+ * return: -1 error or 0 ok
+ */
+int io_etherFilter(int eth, int io, struct bpf_insn * __restrict insn, size_t insnlen);
 
 /*
  * io_etherSend() - Send packet to bpf