2 * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include <gpxe/interface.h>
23 * Object communication interfaces
28 * Plug an interface into a new destination interface
31 * @v dest New destination interface
33 * The reference to the existing destination interface is dropped, a
34 * reference to the new destination interface is obtained, and the
35 * interface is updated to point to the new destination interface.
37 * Note that there is no "unplug" call; instead you must plug the
38 * interface into a null interface.
40 void plug ( struct interface *intf, struct interface *dest ) {
41 ref_put ( intf->refcnt );
42 ref_get ( dest->refcnt );