221 lines
9.1 KiB
Python
221 lines
9.1 KiB
Python
# osmo_gsm_tester: specifics for running an SRS EPC process
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#
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# Copyright (C) 2020 by sysmocom - s.f.m.c. GmbH
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#
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# Author: Pau Espin Pedrol <pespin@sysmocom.de>
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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
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# published by the Free Software Foundation, either version 3 of the
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# License, or (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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import os
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import pprint
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from . import log, util, config, template, process, remote
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def rlc_drb_mode2qci(rlc_drb_mode):
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if rlc_drb_mode.upper() == "UM":
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return 7;
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elif rlc_drb_mode.upper() == "AM":
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return 9;
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raise log.Error('Unexpected rlc_drb_mode', rlc_drb_mode=rlc_drb_mode)
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class srsEPC(log.Origin):
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REMOTE_DIR = '/osmo-gsm-tester-srsepc'
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BINFILE = 'srsepc'
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CFGFILE = 'srsepc.conf'
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DBFILE = 'srsepc_user_db.csv'
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PCAPFILE = 'srsepc.pcap'
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LOGFILE = 'srsepc.log'
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def __init__(self, suite_run, run_node):
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super().__init__(log.C_RUN, 'srsepc')
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self._addr = run_node.run_addr()
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self.set_name('srsepc_%s' % self._addr)
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self.run_dir = None
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self.config_file = None
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self.db_file = None
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self.log_file = None
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self.pcap_file = None
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self.process = None
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self.rem_host = None
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self.remote_config_file = None
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self.remote_db_file = None
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self.remote_log_file = None
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self.remote_pcap_file = None
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self.subscriber_list = []
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self.suite_run = suite_run
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self._run_node = run_node
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def cleanup(self):
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if self.process is None:
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return
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if self._run_node.is_local():
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return
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# copy back files (may not exist, for instance if there was an early error of process):
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try:
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self.rem_host.scpfrom('scp-back-log', self.remote_log_file, self.log_file)
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except Exception as e:
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self.log(repr(e))
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try:
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self.rem_host.scpfrom('scp-back-pcap', self.remote_pcap_file, self.pcap_file)
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except Exception as e:
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self.log(repr(e))
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def start(self):
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self.log('Starting srsepc')
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self.run_dir = util.Dir(self.suite_run.get_test_run_dir().new_dir(self.name()))
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self.configure()
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if self._run_node.is_local():
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self.start_locally()
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else:
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self.start_remotely()
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def start_remotely(self):
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self.inst = util.Dir(os.path.abspath(self.suite_run.trial.get_inst('srslte')))
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lib = self.inst.child('lib')
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if not os.path.isdir(lib):
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raise log.Error('No lib/ in', self.inst)
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if not self.inst.isfile('bin', srsEPC.BINFILE):
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raise log.Error('No %s binary in' % srsEPC.BINFILE, self.inst)
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self.rem_host = remote.RemoteHost(self.run_dir, self._run_node.ssh_user(), self._run_node.ssh_addr())
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remote_prefix_dir = util.Dir(srsEPC.REMOTE_DIR)
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remote_inst = util.Dir(remote_prefix_dir.child(os.path.basename(str(self.inst))))
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remote_run_dir = util.Dir(remote_prefix_dir.child(srsEPC.BINFILE))
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self.remote_config_file = remote_run_dir.child(srsEPC.CFGFILE)
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self.remote_db_file = remote_run_dir.child(srsEPC.DBFILE)
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self.remote_log_file = remote_run_dir.child(srsEPC.LOGFILE)
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self.remote_pcap_file = remote_run_dir.child(srsEPC.PCAPFILE)
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self.rem_host.recreate_remote_dir(remote_inst)
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self.rem_host.scp('scp-inst-to-remote', str(self.inst), remote_prefix_dir)
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self.rem_host.create_remote_dir(remote_run_dir)
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self.rem_host.scp('scp-cfg-to-remote', self.config_file, self.remote_config_file)
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self.rem_host.scp('scp-db-to-remote', self.db_file, self.remote_db_file)
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remote_lib = remote_inst.child('lib')
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remote_binary = remote_inst.child('bin', srsEPC.BINFILE)
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# setting capabilities will later disable use of LD_LIBRARY_PATH from ELF loader -> modify RPATH instead.
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self.log('Setting RPATH for srsepc')
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self.rem_host.change_elf_rpath(remote_binary, remote_lib)
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# srsepc requires CAP_NET_ADMIN to create tunnel devices: ioctl(TUNSETIFF):
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self.log('Applying CAP_NET_ADMIN capability to srsepc')
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self.rem_host.setcap_net_admin(remote_binary)
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args = (remote_binary, self.remote_config_file,
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'--hss.db_file=' + self.remote_db_file,
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'--log.filename=' + self.remote_log_file,
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'--pcap.enable=true',
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'--pcap.filename=' + self.remote_pcap_file)
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self.process = self.rem_host.RemoteProcess(srsEPC.BINFILE, args)
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#self.process = self.rem_host.RemoteProcessFixIgnoreSIGHUP(srsEPC.BINFILE, remote_run_dir, args)
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self.suite_run.remember_to_stop(self.process)
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self.process.launch()
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def start_locally(self):
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inst = util.Dir(os.path.abspath(self.suite_run.trial.get_inst('srslte')))
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binary = inst.child('bin', BINFILE)
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if not os.path.isfile(binary):
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raise log.Error('Binary missing:', binary)
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lib = inst.child('lib')
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if not os.path.isdir(lib):
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raise log.Error('No lib/ in', inst)
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env = {}
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# setting capabilities will later disable use of LD_LIBRARY_PATH from ELF loader -> modify RPATH instead.
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self.log('Setting RPATH for srsepc')
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# srsepc binary needs patchelf <= 0.9 (0.10 and current master fail) to avoid failing during patch. OS#4389, patchelf-GH#192.
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util.change_elf_rpath(binary, util.prepend_library_path(lib), self.run_dir.new_dir('patchelf'))
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# srsepc requires CAP_NET_ADMIN to create tunnel devices: ioctl(TUNSETIFF):
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self.log('Applying CAP_NET_ADMIN capability to srsepc')
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util.setcap_net_admin(binary, self.run_dir.new_dir('setcap_net_admin'))
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self.dbg(run_dir=self.run_dir, binary=binary, env=env)
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args = (binary, os.path.abspath(self.config_file),
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'--hss.db_file=' + self.db_file,
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'--log.filename=' + self.log_file,
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'--pcap.enable=true',
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'--pcap.filename=' + self.pcap_file)
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self.process = process.Process(self.name(), self.run_dir, args, env=env)
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self.suite_run.remember_to_stop(self.process)
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self.process.launch()
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def configure(self):
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self.config_file = self.run_dir.new_file(srsEPC.CFGFILE)
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self.db_file = self.run_dir.new_file(srsEPC.DBFILE)
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self.log_file = self.run_dir.new_file(srsEPC.LOGFILE)
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self.pcap_file = self.run_dir.new_file(srsEPC.PCAPFILE)
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self.dbg(config_file=self.config_file, db_file=self.db_file)
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values = dict(epc=config.get_defaults('srsepc'))
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config.overlay(values, self.suite_run.config())
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config.overlay(values, dict(epc={'run_addr': self.addr()}))
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# Set qci for each subscriber:
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rlc_drb_mode = values['epc'].get('rlc_drb_mode', None)
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assert rlc_drb_mode is not None
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for i in range(len(self.subscriber_list)):
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self.subscriber_list[i]['qci'] = rlc_drb_mode2qci(rlc_drb_mode)
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config.overlay(values, dict(epc=dict(hss=dict(subscribers=self.subscriber_list))))
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self.dbg('SRSEPC CONFIG:\n' + pprint.pformat(values))
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with open(self.config_file, 'w') as f:
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r = template.render(srsEPC.CFGFILE, values)
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self.dbg(r)
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f.write(r)
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with open(self.db_file, 'w') as f:
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r = template.render(srsEPC.DBFILE, values)
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self.dbg(r)
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f.write(r)
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def subscriber_add(self, modem, msisdn=None, algo_str=None):
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if msisdn is None:
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msisdn = self.suite_run.resources_pool.next_msisdn(modem)
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modem.set_msisdn(msisdn)
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if algo_str is None:
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algo_str = modem.auth_algo() or util.OSMO_AUTH_ALGO_NONE
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if algo_str != util.OSMO_AUTH_ALGO_NONE and not modem.ki():
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raise log.Error("Auth algo %r selected but no KI specified" % algo_str)
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subscriber_id = len(self.subscriber_list) # list index
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self.subscriber_list.append({'id': subscriber_id, 'imsi': modem.imsi(), 'msisdn': msisdn, 'auth_algo': algo_str, 'ki': modem.ki(), 'opc': None})
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self.log('Add subscriber', msisdn=msisdn, imsi=modem.imsi(), subscriber_id=subscriber_id,
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algo_str=algo_str)
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return subscriber_id
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def enb_is_connected(self, enb):
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# FIXME: srspec's stdout: "S1 Setup Request - eNB Id 0x66c0", but srsenb.conf has "enb_id = 0x19B"
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return 'S1 Setup Request - eNB Id' in (self.process.get_stdout() or '')
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def running(self):
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return not self.process.terminated()
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def addr(self):
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return self._addr
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def tun_addr(self):
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return '172.16.0.1'
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def run_node(self):
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return self._run_node
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# vim: expandtab tabstop=4 shiftwidth=4
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