2007-04-27 00:44:52 +02:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU General Public License as
|
|
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
|
|
* License, or any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful, but
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <gpxe/interface.h>
|
|
|
|
|
|
|
|
/** @file
|
|
|
|
*
|
|
|
|
* Object communication interfaces
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Plug an interface into a new destination interface
|
|
|
|
*
|
|
|
|
* @v intf Interface
|
|
|
|
* @v dest New destination interface
|
|
|
|
*
|
|
|
|
* The reference to the existing destination interface is dropped, a
|
|
|
|
* reference to the new destination interface is obtained, and the
|
|
|
|
* interface is updated to point to the new destination interface.
|
|
|
|
*
|
|
|
|
* Note that there is no "unplug" call; instead you must plug the
|
|
|
|
* interface into a null interface.
|
|
|
|
*/
|
|
|
|
void plug ( struct interface *intf, struct interface *dest ) {
|
2007-05-18 17:26:44 +02:00
|
|
|
DBGC ( intf, "INTF %p moving from INTF %p to INTF %p\n",
|
|
|
|
intf, intf->dest, dest );
|
2007-05-01 02:06:21 +02:00
|
|
|
intf_put ( intf->dest );
|
|
|
|
intf->dest = intf_get ( dest );
|
2007-04-27 00:44:52 +02:00
|
|
|
}
|
2007-04-30 03:23:01 +02:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Plug two interfaces together
|
|
|
|
*
|
|
|
|
* @v a Interface A
|
|
|
|
* @v b Interface B
|
|
|
|
*
|
|
|
|
* Plugs interface A into interface B, and interface B into interface
|
|
|
|
* A. (The basic plug() function is unidirectional; this function is
|
|
|
|
* merely a shorthand for two calls to plug(), hence the name.)
|
|
|
|
*/
|
|
|
|
void plug_plug ( struct interface *a, struct interface *b ) {
|
|
|
|
plug ( a, b );
|
|
|
|
plug ( b, a );
|
|
|
|
}
|