Change in osmo-ttcn3-hacks[master]: bsc: add TC_emerg_call_and_lcs_loc_req

laforge has submitted this change. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/27659 ) Change subject: bsc: add TC_emerg_call_and_lcs_loc_req ...................................................................... bsc: add TC_emerg_call_and_lcs_loc_req An emergency call often comes with a Location Request. Make sure osmo-bsc handles it well. Related: SYS#5916 Change-Id: I95037374c45943cb14401bc48f16a39c2fcbe1f5 --- M bsc/BSC_Tests.ttcn M library/BSSMAP_Templates.ttcn 2 files changed, 104 insertions(+), 0 deletions(-) Approvals: laforge: Looks good to me, approved fixeria: Looks good to me, but someone else must approve pespin: Looks good to me, but someone else must approve Jenkins Builder: Verified diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn index cce8837..a2add34 100644 --- a/bsc/BSC_Tests.ttcn +++ b/bsc/BSC_Tests.ttcn @@ -10093,6 +10093,105 @@ f_shutdown_helper(); } +private function f_tc_emerg_call_and_lcs_loc_req(charstring id) runs on MSC_ConnHdlr +{ + /* Make sure the CHAN RQD indicates an emergency call (0b101xxxxx). The difference is that osmo-bsc directly + * assigns a TCH lchan and establishing voice for the emergency call will use Mode Modify, not reassignment to + * another lchan. */ + g_pars.ra := 'b7'O; + f_assignment_emerg_setup(); + + var PDU_BSSAP emerg_setup_data_ind_bssap; + timer T := 3.0; + T.start; + alt { + [] BSSAP.receive(tr_BSSAP_DTAP) -> value emerg_setup_data_ind_bssap { + var PDU_ML3_MS_NW verify_emerg_setup; + verify_emerg_setup := dec_PDU_ML3_MS_NW(emerg_setup_data_ind_bssap.pdu.dtap); + if (not isbound(verify_emerg_setup.msgs.cc.emergencySetup)) { + setverdict(fail, "no emergency setup"); + } + } + [] BSSAP.receive { + setverdict(fail, "unexpected BSSAP message!"); + } + [] T.timeout { + setverdict(fail, "timeout waiting for EMERGENCY SETUP!"); + } + } + + /* Here would usually be a CC Call Proceeding from the MSC, but what does the BSC care about DTAP. */ + + /* Do a Location Request in-between the CC call setup */ + f_bssap_le_register_imsi(g_pars.imsi, omit); + BSSAP.send(valueof(ts_BSSMAP_Perform_Location_Request(ts_BSSMAP_Imsi(g_pars.imsi), + ts_CellId_CGI('262'H, '42'H, 23, 42)))); + BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?)); + /* SMLC got the TA from the BSC, now responds with geo information data. */ + BSSAP_LE.send(ts_BSSMAP_LE_PerfLocResp(gad_ell_point_unc_circle, omit)); + BSSAP_LE.receive(BSSAP_LE_Conn_Prim:CONN_PRIM_DISC_IND); + BSSAP.receive(tr_BSSMAP_Perform_Location_Response(tr_BSSMAP_IE_LocationEstimate(gad_ell_point_unc_circle))); + + /* Go on with voice call assignment */ + var template PDU_BSSAP exp_compl := f_gen_exp_compl(); + var PDU_BSSAP ass_cmd := f_gen_ass_req(); + + /* Below speechOrDataIndicator and codecList are copied from an emergency call captured during tests. + * They seem a bit weird (AMR-WB, and the order differ between speechId_DataIndicator and the codecList), but + * seems a good idea to see how osmo-bsc reacts to this. */ + ass_cmd.pdu.bssmap.assignmentRequest.channelType := { + elementIdentifier := '0B'O, /* overwritten */ + lengthIndicator := 0, /* overwritten */ + speechOrDataIndicator := '0001'B, /* speech */ + spare1_4 := '0000'B, + channelRateAndType := ChRate_TCHForH_Fpref, + speechId_DataIndicator := 'c2918105'O + }; + ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ + ts_CodecHR, ts_CodecAMR_WB, ts_CodecEFR, ts_CodecFR})); + + f_rslem_dchan_queue_enable(); + + var ExpectCriteria mgcpcrit := { + connid := omit, + endpoint := omit, + transid := omit + }; + f_create_mgcp_expect(mgcpcrit); + + BSSAP.send(ass_cmd); + + var AssignmentState st := valueof(ts_AssignmentStateInit); + st.voice_call := true; + st.is_assignment := false; + alt { + [] as_modify(st); + [] as_Media(); + [st.modify_done] BSSAP.receive(exp_compl) { + setverdict(pass); + } + } + + /* Voice call carries on ... */ + f_sleep(2.0); + + setverdict(pass); + f_perform_clear(); +} + +testcase TC_emerg_call_and_lcs_loc_req() runs on test_CT { + var MSC_ConnHdlr vc_conn; + var TestHdlrParams pars := f_gen_test_hdlr_pars(); + + f_init(1, true); + f_sleep(1.0); + f_vty_allow_emerg_msc(true); + f_vty_allow_emerg_bts(true, 0); + vc_conn := f_start_handler(refers(f_tc_emerg_call_and_lcs_loc_req), pars); + vc_conn.done; + f_shutdown_helper(); +} + /* Attempt Complete Layer 3 without any MSC available (OS#4832) */ private function f_tc_no_msc(charstring id) runs on MSC_ConnHdlr { f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR); @@ -11466,6 +11565,7 @@ execute( TC_lcs_loc_req_for_idle_ms_no_pag_resp() ); execute( TC_cm_service_during_lcs_loc_req() ); execute( TC_ho_during_lcs_loc_req() ); + execute( TC_emerg_call_and_lcs_loc_req() ); } execute( TC_no_msc() ); diff --git a/library/BSSMAP_Templates.ttcn b/library/BSSMAP_Templates.ttcn index 376cea6..87099b6 100644 --- a/library/BSSMAP_Templates.ttcn +++ b/library/BSSMAP_Templates.ttcn @@ -599,6 +599,10 @@ s0_7 := '00111111'B, s8_15 := '00000111'B /* S6 - S7 and S11 – S15 are reserved and coded with zeroes */ } +template (value) BSSMAP_FIELD_CodecElement ts_CodecAMR_WB modifies ts_CodecBase := { + codecType := FR_AMR_WB, + s0_7 := '00000001'B +} template BSSMAP_IE_SpeechCodecList ts_BSSMAP_IE_CodecList(template BSSMAP_FIELD_CodecElements elem) := { elementIdentifier := '7D'O, lengthIndicator := 0, /* overwritten */ -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/27659 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: I95037374c45943cb14401bc48f16a39c2fcbe1f5 Gerrit-Change-Number: 27659 Gerrit-PatchSet: 3 Gerrit-Owner: neels <nhofmeyr(a)sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de> Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: merged