[ns] MAC Broadcast RTS/CTS

[Rohan S]

Hi, I am trying to enable RTS/CTS for broadcast data
packets. But when I try to do that, I am also
enabling RTS/CTS for ARP packets (which are
broadcast). Could anyone suggest a way to disable
RTS/CTS for ARP and enable RTS/CTS for 
broadcast data packets.Thank You

void
Mac802_11::sendRTS(int dst)
{
	Packet *p = Packet::alloc();
	hdr_cmn* ch = HDR_CMN(p);
	struct rts_frame *rf = (struct
rts_frame*)p->access(hdr_mac::offset_);
	hdr_arp *ah = HDR_ARP(p);

	assert(pktTx_);
	assert(pktRTS_ == 0);

	/*
	 *  If the size of the packet is larger than the
	 *  RTSThreshold, then perform the RTS/CTS exchange.
	 *
	 *  XXX: also skip if destination is a broadcast
	 */
	if( (u_int32_t) HDR_CMN(pktTx_)->size() <
macmib_->RTSThreshold ) {  
	Packet::free(pktRTS_);
		//p = 0;
		return;
	}

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