| # osmo_gsm_tester: specifics for running an SRS EPC process |
| # |
| # Copyright (C) 2020 by sysmocom - s.f.m.c. GmbH |
| # |
| # Author: Pau Espin Pedrol <pespin@sysmocom.de> |
| # |
| # This program is free software: you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation, either version 3 of the |
| # License, or (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| import os |
| import pprint |
| |
| from . import log, util, config, template, process, remote |
| |
| def rlc_drb_mode2qci(rlc_drb_mode): |
| if rlc_drb_mode.upper() == "UM": |
| return 7; |
| elif rlc_drb_mode.upper() == "AM": |
| return 9; |
| raise log.Error('Unexpected rlc_drb_mode', rlc_drb_mode=rlc_drb_mode) |
| |
| class srsEPC(log.Origin): |
| |
| REMOTE_DIR = '/osmo-gsm-tester-srsepc' |
| BINFILE = 'srsepc' |
| CFGFILE = 'srsepc.conf' |
| DBFILE = 'srsepc_user_db.csv' |
| PCAPFILE = 'srsepc.pcap' |
| LOGFILE = 'srsepc.log' |
| |
| def __init__(self, suite_run, run_node): |
| super().__init__(log.C_RUN, 'srsepc') |
| self._addr = run_node.run_addr() |
| self.set_name('srsepc_%s' % self._addr) |
| self.run_dir = None |
| self.config_file = None |
| self.db_file = None |
| self.log_file = None |
| self.pcap_file = None |
| self.process = None |
| self.rem_host = None |
| self.remote_config_file = None |
| self.remote_db_file = None |
| self.remote_log_file = None |
| self.remote_pcap_file = None |
| self.enable_pcap = False |
| self.subscriber_list = [] |
| self.suite_run = suite_run |
| self._run_node = run_node |
| |
| def cleanup(self): |
| if self.process is None: |
| return |
| if self._run_node.is_local(): |
| return |
| # copy back files (may not exist, for instance if there was an early error of process): |
| try: |
| self.rem_host.scpfrom('scp-back-log', self.remote_log_file, self.log_file) |
| except Exception as e: |
| self.log(repr(e)) |
| if self.enable_pcap: |
| try: |
| self.rem_host.scpfrom('scp-back-pcap', self.remote_pcap_file, self.pcap_file) |
| except Exception as e: |
| self.log(repr(e)) |
| |
| def start(self): |
| self.log('Starting srsepc') |
| self.run_dir = util.Dir(self.suite_run.get_test_run_dir().new_dir(self.name())) |
| self.configure() |
| if self._run_node.is_local(): |
| self.start_locally() |
| else: |
| self.start_remotely() |
| |
| def start_remotely(self): |
| self.inst = util.Dir(os.path.abspath(self.suite_run.trial.get_inst('srslte'))) |
| lib = self.inst.child('lib') |
| if not os.path.isdir(lib): |
| raise log.Error('No lib/ in', self.inst) |
| if not self.inst.isfile('bin', srsEPC.BINFILE): |
| raise log.Error('No %s binary in' % srsEPC.BINFILE, self.inst) |
| |
| self.rem_host = remote.RemoteHost(self.run_dir, self._run_node.ssh_user(), self._run_node.ssh_addr()) |
| remote_prefix_dir = util.Dir(srsEPC.REMOTE_DIR) |
| remote_inst = util.Dir(remote_prefix_dir.child(os.path.basename(str(self.inst)))) |
| remote_run_dir = util.Dir(remote_prefix_dir.child(srsEPC.BINFILE)) |
| self.remote_config_file = remote_run_dir.child(srsEPC.CFGFILE) |
| self.remote_db_file = remote_run_dir.child(srsEPC.DBFILE) |
| self.remote_log_file = remote_run_dir.child(srsEPC.LOGFILE) |
| self.remote_pcap_file = remote_run_dir.child(srsEPC.PCAPFILE) |
| |
| self.rem_host.recreate_remote_dir(remote_inst) |
| self.rem_host.scp('scp-inst-to-remote', str(self.inst), remote_prefix_dir) |
| self.rem_host.recreate_remote_dir(remote_run_dir) |
| self.rem_host.scp('scp-cfg-to-remote', self.config_file, self.remote_config_file) |
| self.rem_host.scp('scp-db-to-remote', self.db_file, self.remote_db_file) |
| |
| remote_lib = remote_inst.child('lib') |
| remote_binary = remote_inst.child('bin', srsEPC.BINFILE) |
| # setting capabilities will later disable use of LD_LIBRARY_PATH from ELF loader -> modify RPATH instead. |
| self.log('Setting RPATH for srsepc') |
| self.rem_host.change_elf_rpath(remote_binary, remote_lib) |
| # srsepc requires CAP_NET_ADMIN to create tunnel devices: ioctl(TUNSETIFF): |
| self.log('Applying CAP_NET_ADMIN capability to srsepc') |
| self.rem_host.setcap_net_admin(remote_binary) |
| |
| args = (remote_binary, self.remote_config_file, |
| '--hss.db_file=' + self.remote_db_file, |
| '--log.filename=' + self.remote_log_file, |
| '--pcap.filename=' + self.remote_pcap_file) |
| |
| self.process = self.rem_host.RemoteProcess(srsEPC.BINFILE, args) |
| #self.process = self.rem_host.RemoteProcessFixIgnoreSIGHUP(srsEPC.BINFILE, remote_run_dir, args) |
| self.suite_run.remember_to_stop(self.process) |
| self.process.launch() |
| |
| def start_locally(self): |
| inst = util.Dir(os.path.abspath(self.suite_run.trial.get_inst('srslte'))) |
| |
| binary = inst.child('bin', BINFILE) |
| if not os.path.isfile(binary): |
| raise log.Error('Binary missing:', binary) |
| lib = inst.child('lib') |
| if not os.path.isdir(lib): |
| raise log.Error('No lib/ in', inst) |
| |
| env = {} |
| # setting capabilities will later disable use of LD_LIBRARY_PATH from ELF loader -> modify RPATH instead. |
| self.log('Setting RPATH for srsepc') |
| # srsepc binary needs patchelf <= 0.9 (0.10 and current master fail) to avoid failing during patch. OS#4389, patchelf-GH#192. |
| util.change_elf_rpath(binary, util.prepend_library_path(lib), self.run_dir.new_dir('patchelf')) |
| # srsepc requires CAP_NET_ADMIN to create tunnel devices: ioctl(TUNSETIFF): |
| self.log('Applying CAP_NET_ADMIN capability to srsepc') |
| util.setcap_net_admin(binary, self.run_dir.new_dir('setcap_net_admin')) |
| |
| self.dbg(run_dir=self.run_dir, binary=binary, env=env) |
| args = (binary, os.path.abspath(self.config_file), |
| '--hss.db_file=' + self.db_file, |
| '--log.filename=' + self.log_file, |
| '--pcap.filename=' + self.pcap_file) |
| |
| self.process = process.Process(self.name(), self.run_dir, args, env=env) |
| self.suite_run.remember_to_stop(self.process) |
| self.process.launch() |
| |
| def configure(self): |
| self.config_file = self.run_dir.child(srsEPC.CFGFILE) |
| self.db_file = self.run_dir.child(srsEPC.DBFILE) |
| self.log_file = self.run_dir.child(srsEPC.LOGFILE) |
| self.pcap_file = self.run_dir.child(srsEPC.PCAPFILE) |
| self.dbg(config_file=self.config_file, db_file=self.db_file) |
| |
| values = dict(epc=config.get_defaults('srsepc')) |
| config.overlay(values, dict(epc=self.suite_run.config().get('epc', {}))) |
| config.overlay(values, dict(epc={'run_addr': self.addr()})) |
| |
| # Convert parsed boolean string to Python boolean: |
| self.enable_pcap = util.str2bool(values['epc'].get('enable_pcap', 'false')) |
| config.overlay(values, dict(epc={'enable_pcap': self.enable_pcap})) |
| |
| # Set qci for each subscriber: |
| rlc_drb_mode = values['epc'].get('rlc_drb_mode', None) |
| assert rlc_drb_mode is not None |
| for i in range(len(self.subscriber_list)): |
| self.subscriber_list[i]['qci'] = rlc_drb_mode2qci(rlc_drb_mode) |
| config.overlay(values, dict(epc=dict(hss=dict(subscribers=self.subscriber_list)))) |
| |
| self.dbg('SRSEPC CONFIG:\n' + pprint.pformat(values)) |
| |
| with open(self.config_file, 'w') as f: |
| r = template.render(srsEPC.CFGFILE, values) |
| self.dbg(r) |
| f.write(r) |
| with open(self.db_file, 'w') as f: |
| r = template.render(srsEPC.DBFILE, values) |
| self.dbg(r) |
| f.write(r) |
| |
| def subscriber_add(self, modem, msisdn=None, algo_str=None): |
| if msisdn is None: |
| msisdn = self.suite_run.resources_pool.next_msisdn(modem) |
| modem.set_msisdn(msisdn) |
| |
| if algo_str is None: |
| algo_str = modem.auth_algo() or util.OSMO_AUTH_ALGO_NONE |
| |
| if algo_str != util.OSMO_AUTH_ALGO_NONE and not modem.ki(): |
| raise log.Error("Auth algo %r selected but no KI specified" % algo_str) |
| |
| subscriber_id = len(self.subscriber_list) # list index |
| self.subscriber_list.append({'id': subscriber_id, 'imsi': modem.imsi(), 'msisdn': msisdn, 'auth_algo': algo_str, 'ki': modem.ki(), 'opc': None}) |
| |
| self.log('Add subscriber', msisdn=msisdn, imsi=modem.imsi(), subscriber_id=subscriber_id, |
| algo_str=algo_str) |
| return subscriber_id |
| |
| def enb_is_connected(self, enb): |
| # TODO: match against srsENB config: "S1 Setup Request - eNB Name: srsenb01, eNB id: 0x19" |
| return 'S1 Setup Request - eNB' in (self.process.get_stdout() or '') |
| |
| def running(self): |
| return not self.process.terminated() |
| |
| def addr(self): |
| return self._addr |
| |
| def tun_addr(self): |
| return '172.16.0.1' |
| |
| def run_node(self): |
| return self._run_node |
| |
| # vim: expandtab tabstop=4 shiftwidth=4 |