103 lines
2.3 KiB
Bash
Executable File
103 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# run multiple mesh nodes in a linear topology
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# each node is in the same coverage area, so
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# total throughput is divided by n.
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num_nodes=${1:-4}
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daemon=${2:-iw}
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session=wmediumd
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subnet=10.10.10
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macfmt='02:00:00:00:%02x:00'
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. func
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if [[ $UID -ne 0 ]]; then
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echo "Sorry, run me as root."
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exit 1
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fi
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modprobe -r mac80211_hwsim
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modprobe mac80211_hwsim radios=$num_nodes
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for i in `seq 0 $((num_nodes-1))`; do
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addrs[$i]=`printf $macfmt $i`
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done
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echo "ifaces: { count = $num_nodes; ids = [" > linear.cfg
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for addr in "${addrs[@]}"; do
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echo -n '"'$addr'"' >> linear.cfg
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if [[ $addr != ${addrs[$((num_nodes-1))]} ]]; then
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echo ", " >> linear.cfg
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fi
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done
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echo "]; }" >> linear.cfg
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tmux new -s $session -d
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rm /tmp/netns.pid.* 2>/dev/null
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i=0
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for addr in ${addrs[@]}; do
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phy=`addr2phy $addr`
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dev=`ls /sys/class/ieee80211/$phy/device/net`
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phys[$i]=$phy
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devs[$i]=$dev
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ip=${subnet}.$((10 + i))
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# put this phy in own netns and tmux window, and start a mesh node
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win=$session:$((i+1)).0
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tmux new-window -t $session -n $ip
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# start netns
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pidfile=/tmp/netns.pid.$i
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tmux send-keys -t $win 'lxc-unshare -s NETWORK /bin/bash' C-m
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tmux send-keys -t $win 'echo $$ > '$pidfile C-m
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# wait for netns to exist
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while [[ ! -e $pidfile ]]; do
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echo "Waiting for netns $i -- $pidfile"
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sleep 0.5
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done
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tmux send-keys -t $session:0.0 'iw phy '$phy' set netns `cat '$pidfile'`' C-m
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# wait for phy to exist in netns
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while [[ -e /sys/class/ieee80211/$phy ]]; do
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echo "Waiting for $phy to move to netns..."
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sleep 0.5
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done
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# start mesh node
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tmux send-keys -t $win '. func' C-m
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tmux send-keys -t $win 'meshup-'$daemon ' ' $dev' linear 2412 '$ip C-m
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i=$((i+1))
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done
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winct=$i
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# wait a few beacon periods for everyone to discover each other
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sleep 3
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# force a linear topology
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for i in `seq 0 $((${#addrs[@]} - 1))`; do
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win=$session:$((i+1)).0
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addr=${addrs[$i]}
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dev=${devs[$i]}
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for j in `seq 0 $((${#addrs[@]} - 1))`; do
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oaddr=${addrs[$j]}
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if [[ $j -lt $((i-1)) || $j -gt $((i+1)) ]]; then
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tmux send-keys -t $win 'iw dev '$dev' station set '$oaddr' plink_action block' C-m
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fi
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done
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done
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# start wmediumd
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win=$session:$((winct+1)).0
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winct=$((winct+1))
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tmux new-window -t $session -n wmediumd
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tmux send-keys -t $win '../wmediumd/wmediumd -c linear.cfg' C-m
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tmux attach
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