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https://github.com/saymrwulf/uhd.git
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68 lines
2.4 KiB
Python
Executable file
68 lines
2.4 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# Copyright 2010-2011 Ettus Research LLC
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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The usrp2 recovery app:
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When the usrp2 has an unknown or bad ip address in its eeprom,
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it may not be possible to communicate with the usrp2 over ip/udp.
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This app will send a raw ethernet packet to bypass the ip layer.
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The packet will contain a known ip address to burn into eeprom.
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Because the recovery packet is sent with a broadcast mac address,
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only one usrp2 should be present on the interface upon execution.
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This app requires super-user privileges and only works on linux.
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"""
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import socket
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import struct
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import optparse
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BCAST_MAC_ADDR = 'ff:ff:ff:ff:ff:ff'
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RECOVERY_ETHERTYPE = 0xbeee
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IP_RECOVERY_CODE = 'addr'
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def mac_addr_repr_to_binary_string(mac_addr):
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return ''.join([chr(int(x, 16)) for x in mac_addr.split(':')])
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if __name__ == '__main__':
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parser = optparse.OptionParser(usage='usage: %prog [options]\n'+__doc__)
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parser.add_option('--ifc', type='string', help='ethernet interface name [default=%default]', default='eth0')
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parser.add_option('--new-ip', type='string', help='ip address to set [default=%default]', default='192.168.10.2')
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(options, args) = parser.parse_args()
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#create the raw socket
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print("Opening raw socket on interface:", options.ifc)
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soc = socket.socket(socket.PF_PACKET, socket.SOCK_RAW)
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soc.bind((options.ifc, RECOVERY_ETHERTYPE))
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#create the recovery packet
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print("Loading packet with ip address:", options.new_ip)
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packet = struct.pack(
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'!6s6sH4s4s',
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mac_addr_repr_to_binary_string(BCAST_MAC_ADDR),
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mac_addr_repr_to_binary_string(BCAST_MAC_ADDR),
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RECOVERY_ETHERTYPE,
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IP_RECOVERY_CODE,
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socket.inet_aton(options.new_ip),
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)
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print("Sending packet (%d bytes)"%len(packet))
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soc.send(packet)
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print("Done")
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