#
# Copyright (c) 1997 Regents of the University of California.
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#    must display the following acknowledgement:
# 	This product includes software developed by the Daedalus Research
#       Group at the University of California, Berkeley.
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#    may be used to endorse or promote products derived from this software 
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# Contributed by the Daedalus Research Group, http://daedalus.cs.berkeley.edu
#

#default channel propagation delay (for a LAN)
Channel set delay_ 4us

Classifier/Mac set bcast_ 0

#default bandwidth setting done during mac initialisation (c++)
Mac set bandwidth_ 2Mb
Mac set delay_ 0us

# IEEE 802.11 MAC settings
if [TclObject is-class Mac/802_11] {
	Mac/802_11 set delay_ 64us
	Mac/802_11 set ifs_ 16us
	Mac/802_11 set slotTime_ 16us
	Mac/802_11 set cwmin_ 16
	Mac/802_11 set cwmax_ 1024
	Mac/802_11 set rtxLimit_ 16
	Mac/802_11 set bssId_ -1
	Mac/802_11 set sifs_ 8us
	Mac/802_11 set pifs_ 12us
	Mac/802_11 set difs_ 16us
	Mac/802_11 set rtxAckLimit_ 1
	Mac/802_11 set rtxRtsLimit_ 3
        Mac/802_11 set basicRate_ 1Mb  ;# set this to 0 if want to use bandwidth_ for 
        Mac/802_11 set dataRate_ 1Mb   ;# both control and data pkts
}

# IEEE 802.14 MAC settings
if [TclObject is-class Mac/Mcns] {
	Mac/Mcns set bandwidth_ 10Mb
	Mac/Mcns set hlen_ 6
	Mac/Mcns set bssId_ -1
	Mac/Mcns set slotTime_ 10us
}

# Multihop wireless MAC modeled after Metricom's Ricochet
if [TclObject is-class Mac/Multihop] {
	Mac/Multihop set bandwidth_ 100Kb
	Mac/Multihop set delay_ 10ms
	Mac/Multihop set tx_rx_ 11.125ms
	Mac/Multihop set rx_tx_ 13.25ms
	Mac/Multihop set rx_rx_ 10.5625
	Mac/Multihop set backoffBase_ 20ms
	Mac/Multihop set hlen_ 16
}

# The MAC classifier (to demux incoming packets to the correct LL object)
Mac instproc classify-macs {peerinfo} {
	set peerlabel [lindex $peerinfo 0]
	set peerll [lindex $peerinfo 1]
	$self instvar mclass_
	set mclass_ [new Classifier/Mac]
	$mclass_ install $peerlabel $peerll
	$self target $mclass_
}

# XXX this belongs in ns-node.tcl
# Hook up the MACs together at a given Node
Node instproc addmac {mac} { 
	$self instvar machead_ mactail_

	if ![info exists mactail_] {
		set mactail_ [set machead_ $mac]
		$mac maclist $mactail_
	} else {
		$mactail_ maclist $mac
		$mac maclist $machead_
		set mactail_ $mac
	}
}
