#ifndef _GPXE_INTERFACE_H
#define _GPXE_INTERFACE_H
/** @file
*
* Object communication interfaces
*/
#include <gpxe/refcnt.h>
/** An object communication interface */
struct interface {
/** Destination interface
* When messages are sent via this interface, they will be
* delivered to the destination interface.
* This pointer may never be NULL. When the interface is
* unplugged, it should point to a null interface.
struct interface *dest;
/** Reference counter
* If this interface is not part of a reference-counted
* object, this field may be NULL.
struct refcnt *refcnt;
};
/**
* Increment reference count on an interface
* @v intf Interface
* @ret intf Interface
static inline __attribute__ (( always_inline )) struct interface *
intf_get ( struct interface *intf ) {
ref_get ( intf->refcnt );
return intf;
}
* Decrement reference count on an interface
static inline __attribute__ (( always_inline )) void
intf_put ( struct interface *intf ) {
ref_put ( intf->refcnt );
extern void plug ( struct interface *intf, struct interface *dest );
extern void plug_plug ( struct interface *a, struct interface *b );
#endif /* _GPXE_INTERFACE_H */