WIFI load test using virtual interfaces

wifi-load-test.sh

#!/bin/bash
# this script creates multiple virtual interfaces
# all of these interfaces associate to the same AP to see how many associations the AP can handle
set -o errexit
set -o xtrace

DEVNAME=wlx0024a5219b70
CLIENTS=50
SSID=bhnt-vote

rfkill unblock all
sleep 2
ifconfig ${DEVNAME} up
sleep 2

# create interfaces
i=1
while [ $i -le $CLIENTS ]; do
   iw dev ${DEVNAME} interface add client$i type station
   sleep 1
   ip link set client$i address 00:00:00:00:00:$(printf '%0.2d' $i)
   sleep 1
   ifconfig client$i up
   sleep 1
   iw dev client$i connect -w "${SSID}" && \
      dhclient -4 -pf /var/run/wifitest-dhcp-client$i.pid -lf /var/lib/dhcp/wifitest-dhcp-client$i.lease -v client$i
   i=`expr $i + 1`
done

# cleanup
killall dhclient
sleep 1
while [ $i -gt 0 ]; do
   ifconfig client$i down && sleep 1
   iw dev ${DEVNAME} del
   i=`expr $i - 1`
done