#!/bin/sh
phy_dirs="/sys/class/ieee80211/*"
key_word="SSV|RSV"

for phy_dir in $phy_dirs; do
	drv_name=`ls ${phy_dir}/device/driver | grep -E $key_word`
    if [ ${drv_name} ]; then
    	echo `basename $phy_dir`;
    	break;
    fi
done