118 lines
2.5 KiB
Bash
Executable File
118 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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# 4 mesh nodes in a diamond topology
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# paths must go through one of two intermediate nodes.
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num_nodes=4
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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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if [[ $# -eq 0 ]]; then
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freq=2412
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else
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freq=$1
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fi
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modprobe -r mac80211_hwsim
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modprobe mac80211_hwsim radios=$num_nodes
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iw reg set US
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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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cat <<__EOM > diamond.cfg
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ifaces :
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{
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ids = [
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"02:00:00:00:00:00",
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"02:00:00:00:01:00",
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"02:00:00:00:02:00",
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"02:00:00:00:03:00"
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];
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links = (
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(0, 1, 10),
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(0, 2, 20),
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(0, 3, 0),
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(1, 2, 30),
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(1, 3, 10),
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(2, 3, 20)
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);
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};
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__EOM
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tmux new -s $session -d
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# find out the index of the first window as we can't assume zero-indexing
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first_idx=`tmux list-windows -t $session | head -n1 | cut -d: -f1`
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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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tmux new-window -t $session
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# start netns
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pidfile=/tmp/netns.pid.$i
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win=$session:$((first_idx+i+1))
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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 $session:$first_idx \
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'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 $win 'meshup-iw '$dev' diamond '$freq' '$ip C-m
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i=$((i+1))
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done
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# start wmediumd
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tmux send-keys -t $session:$first_idx '../wmediumd/wmediumd -c diamond.cfg' C-m
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# start iperf server on 10.10.10.13
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node_idx=$((first_idx + 4))
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tmux send-keys -t $session:$node_idx 'iperf -s' C-m
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# enable monitor
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tmux new-window -t $session
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cap_idx=$((first_idx + 5))
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tmux send-keys -t $session:$cap_idx 'ip link set hwsim0 up' C-m
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# capture traffic as normal user (if possible) or root
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CAP_USER=${SUDO_USER:-root}
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tmux send-keys -t $session:$cap_idx "sudo -u $CAP_USER dumpcap -i hwsim0" C-m
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node_idx=$((first_idx + 1))
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tmux select-window -t $session:$node_idx
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tmux send-keys -t $session:$node_idx 'ping -c 5 10.10.10.13' C-m
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tmux send-keys -t $session:$node_idx 'iperf -c 10.10.10.13 -i 5 -t 120'
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tmux attach
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