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arp-flood: much improved, causes a healthy arp storm

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This commit is contained in:
Jed Reynolds
2020-05-04 14:32:28 -07:00
parent 03b180b610
commit c299a4b6a1
1 changed files with 81 additions and 28 deletions
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109
arp-flood.sh
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@@ -8,9 +8,11 @@ mgr=localhost
port=4001 port=4001
station=wlan0 station=wlan0
upstream=eth1 upstream=eth1
num_mvlans=20 num_mvlans=200
cxlist=() cxlist=()
ports=($station) ports=($station)
saved_gc_stale_time=`cat /proc/sys/net/ipv4/neigh/default/gc_stale_time`
saved_base_reachable_time_ms=`cat /proc/sys/net/ipv4/neigh/default/base_reachable_time_ms`
trap do_sigint ABRT trap do_sigint ABRT
trap do_sigint INT trap do_sigint INT
trap do_sigint KILL trap do_sigint KILL
@@ -20,66 +22,117 @@ trap do_sigint SEGV
trap do_sigint TERM trap do_sigint TERM
function do_sigint() { function do_sigint() {
echo "" echo -en "\nDefaulting arp timings "
for cx in "${cxlist[@]}"; do for ((i=0; i < num_mvlans; i++)); do
echo -n "stopping $cx " mvlan="${upstream}#${i}"
fire_cmd set_cx_state default_tm $cx STOPPED >/dev/null echo $saved_gc_stale_time > /proc/sys/net/ipv4/neigh/$mvlan/gc_stale_time
echo $saved_base_reachable_time_ms > /proc/sys/net/ipv4/neigh/$mvlan/base_reachable_time_ms
echo -n "."
done done
echo ""
echo -en "\nStopping connections: "
fire_cmd stop_group udp-arp
#for cx in "${cxlist[@]}"; do
# echo -n ":"
# fire_cmd set_cx_state default_tm $cx STOPPED >/dev/null
#done
echo ""
fire_cmd clear_group udp-arp
echo -n "Removing connections: "
for cx in "${cxlist[@]}"; do for cx in "${cxlist[@]}"; do
echo -n "removing $cx " echo -n "x"
fire_cmd rm_cx default_tm $cx STOPPED >/dev/null fire_cmd rm_cx default_tm $cx STOPPED >/dev/null
done done
echo ""
echo -n "Removing endpoints: "
for cx in "${cxlist[@]}"; do for cx in "${cxlist[@]}"; do
echo -n "removing $cx-A $cx-B " echo -n "-"
fire_cmd rm_endp ${cx}-A STOPPED >/dev/null fire_cmd rm_endp ${cx}-A STOPPED >/dev/null
fire_cmd rm_endp ${cx}-B STOPPED >/dev/null fire_cmd rm_endp ${cx}-B STOPPED >/dev/null
done done
echo ""
set +x
exit 0 exit 0
} }
function fire_cmd() { function fire_cmd() {
./lf_firemod.pl --mgr $mgr --mgr_port $port --quiet yes --action do_cmd \ ./lf_firemod.pl --mgr $mgr --mgr_port $port --quiet yes \
--cmd "$*" \ --action do_cmd --cmd "$*" &>/dev/null
&>/dev/null
} }
function fire_newcx() { function fire_newcx() {
local cxname=$1; shift local cxname=$1; shift
local sta=$1; shift local sta=$1; shift
local eth=$1; shift local eth=$1; shift
./lf_firemod.pl --mgr $mgr --mgr_port $port --action create_cx --quiet yes \ ./lf_firemod.pl --mgr $mgr --mgr_port $port --action create_cx --quiet yes \
--cx_name $cxname --use_ports $sta,$eth --use_speeds 2600,2600 --endp_type udp \ --cx_name $cxname --use_ports $sta,$eth --use_speeds 11500,11500 --endp_type udp \
&>/dev/null &>/dev/null
} }
# create new set of vlans, this will also recreate them using random mac addresses # create new set of vlans, this will also recreate them using random mac addresses
for i in `seq 0 $num_mvlans`; do
#num_vlans=$(( $num_mvlans - 1))
set -e
if (( num_mvlans < 1 )); then
echo "Too few vlans"
exit 1
fi
echo -n "Removing old $num_mvlans macvlans: "
for ((i=0; i < num_mvlans; i++)); do
mvlan="${upstream}#${i}" mvlan="${upstream}#${i}"
echo -n " $mvlan"
fire_cmd rm_vlan 1 1 $mvlan fire_cmd rm_vlan 1 1 $mvlan
echo -n "-" echo -n "-"
sleep 0.03
done
sleep 1
echo " Checking for $num_mvlans old vlans:"
while (./lf_portmod.pl --mgr localhost --list_port_names | grep -q "$upstream#"); do
sleep 1
echo -n ","
done
echo -n "Adding $num_mvlans new macvlans: "
for ((i=0; i < num_mvlans; i++)); do
fire_cmd add_mvlan 1 1 $upstream 'xx:xx:xx:*:*:xx' $i fire_cmd add_mvlan 1 1 $upstream 'xx:xx:xx:*:*:xx' $i
echo -n "+" echo -n ":"
fire_cmd set_port 1 1 "$mvlan" NA NA NA NA 2147483648 NA NA NA NA 67125250 sleep 0.05
echo -n "." done
# "84033538"
for ((i=0; i < num_mvlans; i++)); do
mvlan="${upstream}#${i}"
fire_cmd set_port 1 1 "$mvlan" NA NA NA NA 2147483648 NA NA NA NA 75513858
echo -n "="
sleep 0.05
echo 1 > /proc/sys/net/ipv4/neigh/$mvlan/gc_stale_time
echo 1 > /proc/sys/net/ipv4/neigh/$mvlan/base_reachable_time
done
echo ""
fire_cmd add_group udp-arp
sleep 2
echo -n "Creating $num_mvlans connections: "
for ((i=0; i < num_mvlans; i++)); do
mvlan="${upstream}#${i}"
fire_newcx "udp-$i" $station $mvlan fire_newcx "udp-$i" $station $mvlan
echo -n "o" echo -n "+"
cxlist+=("udp-$i") cxlist+=("udp-$i")
ports+=($mvlan) ports+=($mvlan)
done fire_cmd add_tgcx udp-arp "udp-$i"
sleep 4
for i in `seq 0 $num_mvlans`; do
echo -n "!"
fire_cmd set_cx_state default_tm "udp-$i" RUNNING
done done
sleep 4 sleep 2
#for ((i=0; i < num_mvlans; i++)); do
#echo -n "="
#fire_cmd set_cx_state default_tm "udp-$i" RUNNING
#done
fire_cmd start_group udp-arp
sleep 2
echo "" echo ""
echo -n "Starting arp flushing " echo -n "Starting arp flushing: "
while : ; do while : ; do
for p in "${ports[@]}"; do for p in "${ports[@]}"; do
ip neigh flush dev $p@$upstream ip neigh flush dev $p
done done
echo -n "." echo -n "!"
sleep 0.2 sleep 0.2
done done
#