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* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <gpxe/wrap.h>
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#include <gpxe/interface.h>
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* Object communication interfaces
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* Plug an interface into a new destination interface
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* @v dest New destination interface
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* The reference to the existing destination interface is dropped, a
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* reference to the new destination interface is obtained, and the
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* interface is updated to point to the new destination interface.
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* Note that there is no "unplug" call; instead you must plug the
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* interface into a null interface.
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void plug ( struct interface *intf, struct interface *dest ) {
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DBGC ( intf, "INTF %p moving from INTF %p to INTF %p\n",
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intf, intf->dest, dest );
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intf_put ( intf->dest );
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intf->dest = intf_get ( dest );
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* Plug two interfaces together
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* Plugs interface A into interface B, and interface B into interface
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* A. (The basic plug() function is unidirectional; this function is
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* merely a shorthand for two calls to plug(), hence the name.)
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void plug_plug ( struct interface *a, struct interface *b ) {