daniel has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/37296?usp=email ) Change subject: mme: Verify GUTI -> RAI/PTMSI translation is correct ...................................................................... mme: Verify GUTI -> RAI/PTMSI translation is correct Change-Id: Id1afd55f84c91a765fa12a22979ef0351b6d6554 --- M mme/MME_Tests.ttcn 1 file changed, 25 insertions(+), 10 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/96/37296/1 diff --git a/mme/MME_Tests.ttcn b/mme/MME_Tests.ttcn index 3ea17dd..76c9c7e 100644 --- a/mme/MME_Tests.ttcn +++ b/mme/MME_Tests.ttcn @@ -962,10 +962,14 @@ } -private altstep as_gtp_sgsn_context_2g_to_4g(OCT4 new_sgsn_teid := 'ABABABAB'O, GTPv1C_Templates.GTP_RATType rat_type := GTP_RAT_TYPE_EUTRAN) runs on ConnHdlr { +private altstep as_gtp_sgsn_context_2g_to_4g(OCT4 new_sgsn_teid := 'ABABABAB'O, GTPv1C_Templates.GTP_RATType rat_type := GTP_RAT_TYPE_EUTRAN, + RoutingAreaIdentity rai, + OCT4 ptmsi, + OCT3 ptmsi_sig +) runs on ConnHdlr { var Gtp1cUnitdata gtpc_pdu; - [] GTP.receive(tr_GTPC_SGSNContextReq(g_gn_iface_peer, tr_SGSNContextReqPDU(rat_type := int2oct(enum2int(rat_type), 1)))) -> value gtpc_pdu { + [] GTP.receive(tr_GTPC_SGSNContextReq(g_gn_iface_peer, tr_SGSNContextReqPDU(rai := rai, ptmsi := ts_PTMSI(ptmsi), ptmsi_sig := ts_PTMSI_sig(ptmsi_sig), rat_type := int2oct(enum2int(rat_type), 1)))) -> value gtpc_pdu { var template (value) PDP_Context_GTPC pdp_ctx; var template (value) GTPC_PDUs SGSNContextRespPDU; var Gtp1cUnitdata gtpc_pdu_ack; @@ -1457,25 +1461,25 @@ vc_conn.done; } -/* 3GPP TS 23.401 D.3.6, TS 23.003 2.8.2.2 */ -private function rai_ptmsi2_guti(in RoutingAreaIdentity rai, in OCT4 ptmsi, in OCT3 ptmsi_sig, out NAS_EPS_Types.GUTI guti) runs on ConnHdlr { +/* 3GPP TS 23.401 D.3.6, TS 23.003 2.8.2.2.2 (Mapping in the UE) */ +private function rai_ptmsi2_guti(in RoutingAreaIdentity rai, in OCT4 ptmsi, out NAS_EPS_Types.GUTI guti) { var bitstring ptmsi_bits := oct2bit(ptmsi); - var bitstring ptmsi_sig_bits := oct2bit(ptmsi_sig); + var bitstring rac_bits := oct2bit(rai.rac); var bitstring mtmsi_bits := '11'B & substr(ptmsi_bits, 2, 6) & - substr(ptmsi_sig_bits, 0, 8) & + substr(rac_bits, 0, 8) & substr(ptmsi_bits, 16, 16); guti := valueof(ts_NAS_GUTI(mcc_mnc := rai.mcc_digits & rai.mnc_digits, mmegi := rai.lac, - mmec := rai.rac, + mmec := bit2oct(substr(ptmsi_bits, 8, 8)), tmsi := bit2oct(mtmsi_bits))); } /* Test UE attached to GERAN reselecting a EUTRAN cell. In this scenario, the * new MME will attempt to obtain information of the UE from the old SGSN * through Gn interface using SGSN Context Request/Response procedure (OS#6294). */ -/* 3GPP TS 23.401 D.3.6, TS 23.003 2.8.2.1 */ +/* 3GPP TS 23.401 D.3.6, TS 23.003 2.8.2.2.2 */ private function f_TC_ue_cell_reselect_geran_to_eutran(ConnHdlrPars pars) runs on ConnHdlr { f_init_handler(pars); f_gtp_register_imsi(g_pars.ue_pars.imsi); @@ -1496,10 +1500,12 @@ var template (value) EPS_MobileIdentityLV old_guti; var S1APEM_Config cfg; timer T := 5.0; + var bitstring ptmsi_bits := oct2bit(ptmsi); + var OCT4 ptmsi_exp := bit2oct('11'B & substr(ptmsi_bits, 2, 30)); rai := valueof(ts_RoutingAreaIdentity(mp_gn_local_mcc, mp_gn_local_mnc, int2oct(mp_gn_local_lac, 2), int2oct(mp_gn_local_rac, 1))); - rai_ptmsi2_guti(rai, ptmsi, ptmsi_sig, guti_val); + rai_ptmsi2_guti(rai, ptmsi, guti_val); old_guti := ts_EPS_MobileId_GUTI_(guti_val); nas_tau := ts_PDU_NAS_EPS_TrackingAreaUpdateRequest(old_guti, @@ -1520,7 +1526,7 @@ }; S1AP.send(cfg); - as_gtp_sgsn_context_2g_to_4g(new_sgsn_teid); + as_gtp_sgsn_context_2g_to_4g(new_sgsn_teid, GTP_RAT_TYPE_EUTRAN, rai, ptmsi_exp, ptmsi_sig); /* We now expect the MME to send a Create Session Request to the SGW-C */ T.start; -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/37296?usp=email 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: Id1afd55f84c91a765fa12a22979ef0351b6d6554 Gerrit-Change-Number: 37296 Gerrit-PatchSet: 1 Gerrit-Owner: daniel <dwillmann@sysmocom.de> Gerrit-MessageType: newchange