cat set_mesh_batman_node.py
import fcntl, socket, struct
import os
import time
'''
GLOBAL VARIABLES
'''
# In case you are using any other dongle other than Edimax Wi-Fi dongle,
# replace this with the OUI of that dongle's company. For my project I
# am using Edimax Wi-Fi Dongle.
EDIMAX_MAC_OUI = "74:da:38"
MESH_CELL_ADDRESS = "00:60:1D:01:23:45"
##############################
# Function Name: getHwAddr
#
# Description: Get Hardware/MAC address of the interfaces
##############################
def getHwAddr(ifname):
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
info = fcntl.ioctl(s.fileno(), 0x8927, struct.pack('256s', ifname[:15]))
return ':'.join(['%02x' % ord(char) for char in info[18:24]])
##############################
# Step 1:
##############################
# Fetch the mac address of the Wireless interface so that
# 'batman' mesh can be programmed for the 'Edimax' Wi-Fi
# interface that supports "adhoc" mode.
wlan0_mac = getHwAddr('wlan0')
wlan1_mac = getHwAddr('wlan1')
##############################
# Step 2: Get the interface name of Edimax Wi-Fi USB dongle that
# supports 'adhoc' mode.
##############################
# Fetch the mac address of the Wireless interface so that
if EDIMAX_MAC_OUI in wlan0_mac:
adhoc_wifi_inf = "wlan0"
adhoc_wifi_inf_mac = wlan0_mac
if EDIMAX_MAC_OUI in wlan1_mac:
adhoc_wifi_inf = "wlan1"
adhoc_wifi_inf_mac = wlan1_mac
print ('Wi-Fi interface name on Raspberry'
' pi that supports adhoc mode: [%s] MAC: [%s]'
%(adhoc_wifi_inf, adhoc_wifi_inf_mac))
# Activate batman-adv
os.system("sudo modprobe batman-adv")
# Disable and configure Wi-Fi interface to adhoc mode.
os.system("sudo ip link set %s down" %(adhoc_wifi_inf))
os.system("sudo ifconfig %s mtu 1532" %(adhoc_wifi_inf))
os.system("sudo iwconfig %s mode ad-hoc" %(adhoc_wifi_inf))
os.system("sudo iwconfig %s essid neel_mesh" %(adhoc_wifi_inf))
os.system("sudo iwconfig %s ap any" %(adhoc_wifi_inf))
os.system("sudo iwconfig %s channel 8" %(adhoc_wifi_inf))
# All the nodes in the mesh network should have same CELL address.
# From the man page
# Force the card to register to the access point given by the address,
#if it is possible.
os.system("sudo iwconfig %s ap %s" %(adhoc_wifi_inf,
MESH_CELL_ADDRESS))
time.sleep(1)
os.system("sudo ip link set %s up" %(adhoc_wifi_inf))
time.sleep(1)
# add wlan interface to bat interface
os.system("sudo batctl if add %s" %(adhoc_wifi_inf))
time.sleep(1)
os.system("sudo ifconfig bat0 up")
time.sleep(5)
# Assign ip address for bat interface which is the mesh interface
os.system("sudo ifconfig bat0 %s" %(MESH_NODE_IP_ADDR))
x