From 6458eca9540f11fb8dd5bee184e6124998023c4f Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Tue, 16 Mar 2010 17:54:54 -0700 Subject: Added recovery app to use raw socket to burn known ip addr. Fixed up fw so the device can reply after new addrs are set. --- host/apps/usrp2_recovery.py | 50 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100755 host/apps/usrp2_recovery.py (limited to 'host/apps/usrp2_recovery.py') diff --git a/host/apps/usrp2_recovery.py b/host/apps/usrp2_recovery.py new file mode 100755 index 000000000..00d231cdb --- /dev/null +++ b/host/apps/usrp2_recovery.py @@ -0,0 +1,50 @@ +#!/usr/bin/env python + +""" +The usrp2 recovery app: + +When the usrp2 has an unknown or bad ip address in its eeprom, +it may not be possible to communicate with the usrp2 over ip/udp. + +This app will send a raw ethernet packet to bypass the ip layer. +The packet will contain a known ip address to burn into eeprom. +Because the recovery packet is sent with a broadcast mac address, +only one usrp2 should be present on the interface upon execution. + +This app requires super-user privileges and only works on linux. +""" + +import socket +import struct +import optparse + +BCAST_MAC_ADDR = 'ff:ff:ff:ff:ff:ff' +RECOVERY_ETHERTYPE = 0xbeee +IP_RECOVERY_CODE = 'addr' + +def mac_addr_repr_to_binary_string(mac_addr): + return ''.join(map(lambda x: chr(int(x, 16)), mac_addr.split(':'))) + +if __name__ == '__main__': + parser = optparse.OptionParser() + parser.add_option('--ifc', type='string', help='ethernet interface name [default=%default]', default='eth0') + parser.add_option('--new-ip', type='string', help='ip address to set [default=%default]', default='192.168.10.2') + (options, args) = parser.parse_args() + + #create the raw socket + print "Opening raw socket on interface: ", options.ifc + soc = socket.socket(socket.PF_PACKET, socket.SOCK_RAW) + soc.bind((options.ifc, RECOVERY_ETHERTYPE)) + + #create the recovery packet + print "Loading packet with new ip address: ", options.new_ip + packet = struct.pack( + '!6s6sH4s4s', + mac_addr_repr_to_binary_string(BCAST_MAC_ADDR), + mac_addr_repr_to_binary_string(BCAST_MAC_ADDR), + RECOVERY_ETHERTYPE, + IP_RECOVERY_CODE, + socket.inet_aton(options.new_ip), + ) + soc.send(packet) + print "Done" -- cgit v1.2.3 From 12ca1b612c7d82d003b5ea9683417903e4cb043f Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Tue, 16 Mar 2010 18:18:25 -0700 Subject: added more help and verbose on recovery app --- host/apps/usrp2_recovery.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'host/apps/usrp2_recovery.py') diff --git a/host/apps/usrp2_recovery.py b/host/apps/usrp2_recovery.py index 00d231cdb..48c1121cb 100755 --- a/host/apps/usrp2_recovery.py +++ b/host/apps/usrp2_recovery.py @@ -26,18 +26,18 @@ def mac_addr_repr_to_binary_string(mac_addr): return ''.join(map(lambda x: chr(int(x, 16)), mac_addr.split(':'))) if __name__ == '__main__': - parser = optparse.OptionParser() + parser = optparse.OptionParser(usage='usage: %prog [options]\n'+__doc__) parser.add_option('--ifc', type='string', help='ethernet interface name [default=%default]', default='eth0') parser.add_option('--new-ip', type='string', help='ip address to set [default=%default]', default='192.168.10.2') (options, args) = parser.parse_args() #create the raw socket - print "Opening raw socket on interface: ", options.ifc + print "Opening raw socket on interface:", options.ifc soc = socket.socket(socket.PF_PACKET, socket.SOCK_RAW) soc.bind((options.ifc, RECOVERY_ETHERTYPE)) #create the recovery packet - print "Loading packet with new ip address: ", options.new_ip + print "Loading packet with ip address:", options.new_ip packet = struct.pack( '!6s6sH4s4s', mac_addr_repr_to_binary_string(BCAST_MAC_ADDR), @@ -46,5 +46,7 @@ if __name__ == '__main__': IP_RECOVERY_CODE, socket.inet_aton(options.new_ip), ) + + print "Sending packet (%d bytes)"%len(packet) soc.send(packet) print "Done" -- cgit v1.2.3