| module BSC_Tests { |
| |
| import from Osmocom_Types all; |
| import from GSM_Types all; |
| import from IPL4asp_Types all; |
| |
| import from BSSAP_Adapter all; |
| import from BSSAP_CodecPort all; |
| import from BSSMAP_Templates all; |
| import from IPA_Emulation all; |
| import from IPA_Types all; |
| import from RSL_Types all; |
| |
| import from RSL_Tests all; |
| |
| const integer NUM_BTS := 1; |
| const float T3101_MAX := 12.0; |
| |
| type component test_CT extends BSSAP_Adapter_CT { |
| var IPA_Client bts[NUM_BTS]; |
| port IPA_RSL_PT IPA_RSL[NUM_BTS]; |
| |
| var boolean g_initialized := false; |
| timer T_guard := 30.0; |
| |
| } |
| |
| modulepar { |
| charstring mp_bsc_ip := "127.0.0.1"; |
| integer mp_bsc_rsl_port := 3003; |
| } |
| |
| type record IPA_Client { |
| IPA_Emulation_CT vc_IPA, |
| IPA_CCM_Parameters ccm_pars, |
| charstring id |
| } |
| |
| function f_ipa_rsl_start(inout IPA_Client clnt, charstring bsc_host, PortNumber bsc_port, integer i) |
| runs on test_CT { |
| timer T := 10.0; |
| |
| clnt.id := "IPA" & int2str(i); |
| clnt.vc_IPA := IPA_Emulation_CT.create(clnt.id & "-IPA"); |
| clnt.ccm_pars := c_IPA_default_ccm_pars; |
| clnt.ccm_pars.name := "Osmocom TTCN-3 BTS Simulator"; |
| clnt.ccm_pars.unit_id := int2str(1234+i) & "/0/0"; |
| |
| map(clnt.vc_IPA:IPA_PORT, system:IPA_CODEC_PT); |
| connect(clnt.vc_IPA:IPA_RSL_PORT, self:IPA_RSL[i]); |
| |
| clnt.vc_IPA.start(IPA_Emulation.main_client(bsc_host, bsc_port, "", -1, clnt.ccm_pars)); |
| |
| /* wait for IPA RSL link to connect and send ID ACK */ |
| T.start; |
| alt { |
| [] IPA_RSL[i].receive(ASP_IPA_Event:{up_down := ASP_IPA_EVENT_ID_ACK}) { |
| T.stop; |
| IPA_RSL[i].send(ts_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,ts_RSL_PAGING_LOAD_IND(23))); |
| } |
| [] IPA_RSL[i].receive { repeat } |
| [] T.timeout { |
| setverdict(fail, "Timeout waiting for ASP_IPA_EVENT_ID_ACK"); |
| self.stop; |
| } |
| } |
| } |
| |
| function f_sleep(float seconds) { |
| timer T := seconds; |
| T.start; |
| T.timeout; |
| } |
| |
| altstep as_Tguard() runs on test_CT { |
| [] T_guard.timeout { setverdict(fail, "Timeout of T_guard"); } |
| } |
| |
| function f_init() runs on test_CT { |
| var integer i; |
| |
| if (g_initialized) { |
| return; |
| } |
| g_initialized := true; |
| |
| /* Call a function of our 'parent component' BSSAP_Adapter_CT to start the |
| * MSC-side BSSAP emulation */ |
| f_bssap_init("VirtMSC"); |
| |
| f_sleep(5.0); |
| |
| for (i := 0; i < NUM_BTS; i := i+1) { |
| f_ipa_rsl_start(bts[i], mp_bsc_ip, mp_bsc_rsl_port, i); |
| } |
| f_sleep(0.5); |
| |
| T_guard.start; |
| activate(as_Tguard()); |
| } |
| |
| function f_exp_ipa_rx(integer bts_nr, template RSL_Message t_rx, float t_secs := 2.0, IpaStreamId sid := IPAC_PROTO_RSL_TRX0) |
| runs on test_CT return RSL_Message { |
| var ASP_RSL_Unitdata rx_rsl_ud; |
| timer T := t_secs; |
| |
| T.start; |
| alt { |
| [] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(sid, t_rx)) -> value rx_rsl_ud { |
| T.stop; |
| } |
| [] IPA_RSL[bts_nr].receive { repeat; } |
| [] T.timeout { setverdict(fail, "Timeout expecting ", t_rx); } |
| } |
| return rx_rsl_ud.rsl; |
| } |
| |
| function f_ipa_tx(integer bts_nr, template RSL_Message t_tx, IpaStreamId sid := IPAC_PROTO_RSL_TRX0) |
| runs on test_CT { |
| IPA_RSL[bts_nr].send(ts_ASP_RSL_UD(sid, t_tx)); |
| } |
| |
| |
| testcase TC_chan_act_noreply() runs on test_CT { |
| var BSSAP_N_UNITDATA_ind ud_ind; |
| |
| f_init(); |
| f_bssap_reset(); |
| |
| IPA_RSL[0].send(ts_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,ts_RSL_CHAN_RQD('23'O, 23))); |
| f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV)); |
| setverdict(pass); |
| } |
| |
| /* CHAN RQD -> CHAN ACT -> CHAN ACT ACK -> RF CHAN REL */ |
| testcase TC_chan_act_ack_noest() runs on test_CT { |
| var RSL_Message rx_rsl; |
| |
| f_init(); |
| f_bssap_reset(); |
| |
| /* Send CHAN RQD and wait for allocation; acknowledge it */ |
| f_ipa_tx(0, ts_RSL_CHAN_RQD('23'O, 23)); |
| rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV)); |
| var RslChannelNr chan_nr := rx_rsl.ies[0].body.chan_nr; |
| f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, 23)); |
| |
| /* expect BSC to disable the channel again if there's no RLL EST IND */ |
| rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX); |
| |
| setverdict(pass); |
| } |
| |
| /* Test behavior if MSC never answers to CR */ |
| testcase TC_chan_act_ack_est_ind_noreply() runs on test_CT { |
| var RSL_Message rx_rsl; |
| |
| f_init(); |
| f_bssap_reset(); |
| |
| /* Send CHAN RQD and wait for allocation; acknowledge it */ |
| f_ipa_tx(0, ts_RSL_CHAN_RQD('23'O, 23)); |
| rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV)); |
| var RslChannelNr chan_nr := rx_rsl.ies[0].body.chan_nr; |
| f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, 23)); |
| |
| var octetstring l3 := '00010203040506'O |
| f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3)); |
| |
| BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))); |
| |
| /* expect BSC to disable the channel again if there's no response from MSC */ |
| rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX); |
| |
| setverdict(pass); |
| } |
| |
| /* Test behavior if MSC answers with CREF to CR */ |
| testcase TC_chan_act_ack_est_ind_refused() runs on test_CT { |
| var BSSAP_N_CONNECT_ind rx_c_ind; |
| var RSL_Message rx_rsl; |
| |
| f_init(); |
| f_bssap_reset(); |
| |
| /* Send CHAN RQD and wait for allocation; acknowledge it */ |
| f_ipa_tx(0, ts_RSL_CHAN_RQD('23'O, 23)); |
| rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV)); |
| var RslChannelNr chan_nr := rx_rsl.ies[0].body.chan_nr; |
| f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, 23)); |
| |
| var octetstring l3 := '00010203040506'O |
| f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3)); |
| |
| BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) -> value rx_c_ind; |
| BSSAP.send(ts_BSSAP_DISC_req(rx_c_ind.connectionId, 0)); |
| |
| /* expect BSC to disable the channel */ |
| rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX); |
| |
| setverdict(pass); |
| } |
| |
| |
| |
| control { |
| execute( TC_chan_act_noreply() ); |
| execute( TC_chan_act_ack_noest() ); |
| execute( TC_chan_act_ack_est_ind_noreply() ); |
| execute( TC_chan_act_ack_est_ind_refused() ); |
| } |
| |
| } |