monon

#!/system/bin/sh

# Initial configuration.
# - Channel: 11
# - Bandwidth: 40 MHz
# - CRC Check: true
# - Type (least significant to most significant):
#   Management packets, Control packets, Data packets
#   If you want data packets only, use 100
# - Conversion bit: not required (means no conversion - RADIOTAP
#   instead of Ethernet)

CONF="1-16 99 1 999 0"

if [ "$(id -u)" != "0" ]; then
	echo "This script must be run as root"
	exit 1
fi

if [ ! -e "/sys/module/wlan/parameters/con_mode" ]; then
	echo "Looks like you have an unsupported device"
	exit 1
fi

if [ "$#" -ne "0" ]; then
	if [ "$#" -eq "5" ]; then
		CONF=$@
	else
		echo "Usage: $0 [channel bandwidth crccheck type conversion]"
		exit 1
	fi
fi

# Disable the interface
# 'ip link set wlan0 down' will not work because the daemon will reload the
# driver after some time, and interface will go down even if we set it up later

svc wifi disable
sleep 1

# Change driver mode to monitor-only

echo 4 > /sys/module/wlan/parameters/con_mode

# Wait for driver to reload

sleep 2
iwpriv wlan0 MonitorModeConf $CONF

iwpriv wlan0 monitor 1
ip link set wlan0 up