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