ns-allinone-2.35/ns-2.35/mac/mac-802_11Ext.cc
void Mac802_11Ext::transmit(Packet *p, TXConfirmCallback callback) {
	txConfirmCallback_=callback;
	// check memory leak? 
	if (MAC_DBG)
		log("Tx", "Start");
	downtarget_->recv(p->copy(), this);
}
// this function is used by transmission module
this function is used by transmission module
this function is used by transmission module
void Mac802_11Ext::transmit(Packet *p, TXConfirmCallback callback) {
	txConfirmCallback_=callback;
	if (MAC_DBG)
		log("Tx", "Start");
	downtarget_->recv(p->copy(), this);
}
void Mac802_11Ext :: transmit ( Packet * p , TXConfirmCallback callback ) { txConfirmCallback_ = callback ; if ( MAC_DBG ) log ( " " , " " ) ; downtarget_ -> recv ( p -> copy ( ) , this ) ; }
this function is used by transmission module
this function is used by transmission module
// check memory leak? 