168 lines
5.0 KiB
Python
Executable File
168 lines
5.0 KiB
Python
Executable File
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# TRX Toolkit
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# Virtual Um-interface (fake transceiver)
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#
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# (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>
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#
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# All Rights Reserved
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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 2 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 along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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APP_CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
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import logging as log
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import signal
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import argparse
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import select
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import sys
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from app_common import ApplicationBase
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from ctrl_if_bts import CTRLInterfaceBTS
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from ctrl_if_bb import CTRLInterfaceBB
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from burst_fwd import BurstForwarder
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from fake_pm import FakePM
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from udp_link import UDPLink
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from clck_gen import CLCKGen
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class Application(ApplicationBase):
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def __init__(self):
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self.app_print_copyright(APP_CR_HOLDERS)
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self.argv = self.parse_argv()
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# Set up signal handlers
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signal.signal(signal.SIGINT, self.sig_handler)
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# Configure logging
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self.app_init_logging(self.argv)
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def run(self):
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# Init TRX CTRL interface for BTS
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self.bts_ctrl = CTRLInterfaceBTS(
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self.argv.bts_addr, self.argv.bts_base_port + 101,
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self.argv.trx_bind_addr, self.argv.bts_base_port + 1)
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# Init TRX CTRL interface for BB
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self.bb_ctrl = CTRLInterfaceBB(
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self.argv.bb_addr, self.argv.bb_base_port + 101,
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self.argv.trx_bind_addr, self.argv.bb_base_port + 1)
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# Power measurement emulation
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# Noise: -120 .. -105
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# BTS: -75 .. -50
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self.pm = FakePM(-120, -105, -75, -50)
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# Share a FakePM instance between both BTS and BB
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self.bts_ctrl.pm = self.pm
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self.bb_ctrl.pm = self.pm
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# Init DATA links
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self.bts_data = UDPLink(
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self.argv.bts_addr, self.argv.bts_base_port + 102,
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self.argv.trx_bind_addr, self.argv.bts_base_port + 2)
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self.bb_data = UDPLink(
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self.argv.bb_addr, self.argv.bb_base_port + 102,
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self.argv.trx_bind_addr, self.argv.bb_base_port + 2)
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# BTS <-> BB burst forwarding
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self.burst_fwd = BurstForwarder(self.bts_data, self.bb_data)
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# Share a BurstForwarder instance between BTS and BB
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self.bts_ctrl.burst_fwd = self.burst_fwd
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self.bb_ctrl.burst_fwd = self.burst_fwd
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# Provide clock to BTS
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self.bts_clck = UDPLink(
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self.argv.bts_addr, self.argv.bts_base_port + 100,
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self.argv.trx_bind_addr, self.argv.bts_base_port)
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self.clck_gen = CLCKGen([self.bts_clck])
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self.bts_ctrl.clck_gen = self.clck_gen
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log.info("Init complete")
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# Enter main loop
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while True:
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socks = [self.bts_ctrl.sock, self.bb_ctrl.sock,
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self.bts_data.sock, self.bb_data.sock]
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# Wait until we get any data on any socket
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r_event, w_event, x_event = select.select(socks, [], [])
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# Downlink: BTS -> BB
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if self.bts_data.sock in r_event:
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self.burst_fwd.bts2bb()
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# Uplink: BB -> BTS
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if self.bb_data.sock in r_event:
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self.burst_fwd.bb2bts()
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# CTRL commands from BTS
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if self.bts_ctrl.sock in r_event:
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self.bts_ctrl.handle_rx()
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# CTRL commands from BB
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if self.bb_ctrl.sock in r_event:
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self.bb_ctrl.handle_rx()
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def shutdown(self):
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log.info("Shutting down...")
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# Stop clock generator
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self.clck_gen.stop()
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def parse_argv(self):
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parser = argparse.ArgumentParser(prog = "fake_trx",
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description = "Virtual Um-interface (fake transceiver)")
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# Register common logging options
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self.app_reg_logging_options(parser)
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trx_group = parser.add_argument_group("TRX interface")
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trx_group.add_argument("-b", "--trx-bind-addr",
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dest = "trx_bind_addr", type = str, default = "0.0.0.0",
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help = "Set FakeTRX bind address (default %(default)s)")
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trx_group.add_argument("-R", "--bts-addr",
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dest = "bts_addr", type = str, default = "127.0.0.1",
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help = "Set BTS remote address (default %(default)s)")
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trx_group.add_argument("-r", "--bb-addr",
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dest = "bb_addr", type = str, default = "127.0.0.1",
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help = "Set BB remote address (default %(default)s)")
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trx_group.add_argument("-P", "--bts-base-port",
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dest = "bts_base_port", type = int, default = 5700,
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help = "Set BTS base port number (default %(default)s)")
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trx_group.add_argument("-p", "--bb-base-port",
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dest = "bb_base_port", type = int, default = 6700,
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help = "Set BB base port number (default %(default)s)")
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argv = parser.parse_args()
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# Make sure there is no overlap between ports
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if argv.bts_base_port == argv.bb_base_port:
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parser.error("BTS and BB base ports shall be different")
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return argv
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def sig_handler(self, signum, frame):
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log.info("Signal %d received" % signum)
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if signum is signal.SIGINT:
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self.shutdown()
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sys.exit(0)
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if __name__ == '__main__':
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app = Application()
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app.run()
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