Enhance UT to send user plane data (7593edbf) · Commits · INT - Core Network and Interoperability Testing / 5G Core / NAS

etc/AtsNGAP/AtsNGAP_GNB_p_net.cfg_

+4 −0

Changes for etc/AtsNGAP/AtsNGAP_GNB_p_net.cfg_: 4 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -47,6 +47,10 @@ LibNGAP_Pixits.PX_AMF_UE_NGAP_ID := 1

		LibNGAP_Pixits.PX_TIME_ZONE := '80'O # 0x40 for GMT+1, 0x80 for GMT+2

		# User plane probe (TC_NGAP_GNB_PDU_01): the UPF tunnel endpoint given to the gNB is this host on N3, and the UE pings it
		LibNGAP_Pixits.PX_TRANSPORT_LAYER_ADDRESS := '00001010101011100001001100001110'B # 10.174.19.14
		LibNGAP_Pixits.PX_UT_PING_HOST := "10.174.19.14"

		LibNGAP_Pixits.PX_PDU_SESSION_ID := 1

		LibNGAP_Pixits.PX_NR_ENCRYPTION_ALGORITHMS := '1110000000000000'B

ttcn/AtsNGAP/NGAP_Steps.ttcn

+41 −0

Changes for ttcn/AtsNGAP/NGAP_Steps.ttcn: 41 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -847,6 +847,47 @@ module NGAP_Steps { // TODO FSCOM f_xxx_UE_SecurityMode to be mmoved into NAG_NG
		return true;
		} // End of function f_NGAP_gnb_UE_await_data_call

		/**
		* @brief Have the real UE send user plane traffic over its data call: ping PX_UT_PING_HOST.
		* @details Unless PX_UT_PING_HOST is empty: asks the upper tester for PING (AT+QPING on the modem,
		* PX_UT_PING_COUNT echo requests, PX_UT_PING_TIMEOUT s each) and waits for its result, which is
		* only logged. The gNB is expected to forward the echo requests as uplink G-PDUs to the UPF
		* tunnel endpoint of the PDU session (PX_TRANSPORT_LAYER_ADDRESS, PX_GTP_TEID); as the test
		* system does not handle GTP-U yet, no reply comes back, and only a capture on the test system
		* host (UDP port 2152) shows whether they arrived.
		* The UE stays in CM-CONNECTED meanwhile: no NGAP signalling is expected.
		* @note The verdict is set by the UT dispatcher only (NGAP_UtDispatcher): inconc if the modem could not
		* run the pings at all (e.g. the context of the data call is not usable by AT+QPING); lost
		* replies are not a failure.
		* @return true if the modem ran the pings.
		*/
		function f_NGAP_gnb_UE_ping() runs on gNBNGAPComponent return boolean {
		var UT_COMMON_CNF v_cnf;
		timer t_ping := int2float(PX_UT_PING_COUNT * PX_UT_PING_TIMEOUT) + 30.0;

		if (PX_UT_PING_HOST == "") {
		return false;
		}
		log(">>> f_NGAP_gnb_UE_ping: ", PX_UT_PING_HOST, ", ", PX_UT_PING_COUNT, " echo requests");
		fl_UT_ApplyCommand(utPtcMtcPort, cas_UT_Req(PING, CNF_REQUIRED, {
		cs_Ut_Parameter_Common("HOST", PX_UT_PING_HOST),
		cs_Ut_Parameter_Common("COUNT", int2str(PX_UT_PING_COUNT)),
		cs_Ut_Parameter_Common("TIMEOUT", int2str(PX_UT_PING_TIMEOUT))
		}), true);
		t_ping.start;
		alt {
		[] utPtcMtcPort.receive(car_UT_COMMON_CNF) -> value v_cnf {
		t_ping.stop;
		}
		[] t_ping.timeout {
		log("* " & __SCOPE__ & ": INFO: no ping result from the upper tester *");
		return false;
		}
		}
		log("* " & __SCOPE__ & ": INFO: ping ", PX_UT_PING_HOST, " result: ", v_cnf, " *");
		return v_cnf.Result;
		} // End of function f_NGAP_gnb_UE_ping

		/**
		* @brief Leave the real UE in a known state at the end of a test: deregistered, in flight mode.
		* @details Unless PX_UT_DEREGISTER_TIMEOUT is 0.0: asks the upper tester to switch the modem to flight

ttcn/AtsNGAP/NGAP_TCFunctions.ttcn

+4 −0

Changes for ttcn/AtsNGAP/NGAP_TCFunctions.ttcn: 4 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -179,6 +179,10 @@ module NGAP_TCFunctions {
		if (PICS_USE_AT_COMMANDS and v_setup) {
		if (not f_NGAP_gnb_UE_await_data_call()) {
		log("* " & __SCOPE__ & ": INCONC: the PDU session is set up, but the UE data call is not connected. *");
		} else if (f_NGAP_gnb_UE_ping()) {
		// User plane probe: the echo requests must reach PX_TRANSPORT_LAYER_ADDRESS as uplink
		// G-PDUs (check with a capture on UDP port 2152); not checked by the test yet
		log("* " & __SCOPE__ & ": INFO: user plane traffic sent by the UE *");
		}
		}
		}

ttcn/LibNGAP/lib/LibNGAP_Pixits.ttcn

+10 −0

Changes for ttcn/LibNGAP/lib/LibNGAP_Pixits.ttcn: 10 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -750,6 +750,16 @@ module LibNGAP_Pixits {
		* see f_NGAP_gnb_UE_Deregister. 0.0 to leave the UE as it is at the end of the test */
		modulepar float PX_UT_DEREGISTER_TIMEOUT := 10.0;

		/** @desc Host the real UE pings over its data call once the PDU session is set up, to generate user plane traffic
		* (uplink G-PDUs towards PX_TRANSPORT_LAYER_ADDRESS); empty to send no traffic. See f_NGAP_gnb_UE_ping */
		modulepar charstring PX_UT_PING_HOST := "";

		/** @desc Number of echo requests sent by the real UE (1..10); see f_NGAP_gnb_UE_ping */
		modulepar integer PX_UT_PING_COUNT := 4;

		/** @desc Time, in seconds, the real UE waits for each echo reply (1..255); see f_NGAP_gnb_UE_ping */
		modulepar integer PX_UT_PING_TIMEOUT := 4;

		/** @desc Whether, after its restart (AT+CFUN=1,1), the real UE (AT commands) is set to full functionality (AT+CFUN=1) and
		* forced onto PX_UT_PLMN_MCC/PX_UT_PLMN_MNC (AT+COPS=1); see f_NGAP_gnb_UE_Register.
		* false: it is only restarted, and registers by itself on the PLMN it selects. */

ttcn/LibNGAP/lib_system/LibNGAP_Functions.ttcn

+10 −5

Changes for ttcn/LibNGAP/lib_system/LibNGAP_Functions.ttcn: 10 added lines, 5 removed lines.
Original line number	Diff line number	Diff line
		@@ -1609,6 +1609,8 @@ module LibNGAP_Functions {
		'00000001'O,
		omit
		))));
		setverdict(pass, "Sent RETRIEVE_UE_INFORMATION NAS message");

		// Await UEInformationTransfer
		f_recv_NGAP_PDU(
		mw_ngap_initMsg(
		@@ -1618,6 +1620,7 @@ module LibNGAP_Functions {
		PX_AMF_POINTER,
		?
		))));
		setverdict(pass)
		}

		/**
		@@ -1662,7 +1665,7 @@ module LibNGAP_Functions {
		m_tAI
		)))));

		setverdict(pass);
		setverdict(pass, "Sent UplinkNASTransport NAS message");
		}

		/**
		@@ -1691,6 +1694,7 @@ module LibNGAP_Functions {
		vc_RAN_UE_ID,
		?
		)));
		setverdict(pass, "Received UERadioCapabilityInfoIndication NAS message");
		}
		[] N2_gNBaMF_P.check(receive(NGAP_PDU: ?)) {
		// continue
		@@ -1716,7 +1720,7 @@ module LibNGAP_Functions {
		setverdict(fail);
		} else {
		log("*** " & __SCOPE__ & ": PASS: Expected NG_REGISTRATION_COMPLETE");
		setverdict(pass);
		setverdict(pass, "Received REGISTRATION_COMPLETE NAS message");
		}

		log("<<< f_await_registration_complete");
		@@ -1799,7 +1803,7 @@ module LibNGAP_Functions {
		m_tAI
		)))));

		setverdict(pass);
		setverdict(pass, "Sent PDU_SESSION_ESTABLISHMENT_REQUEST NAS message");

		log("<<< f_send_pdu_session_establishment_request");
		}
		@@ -1828,10 +1832,10 @@ module LibNGAP_Functions {
		var O1_Type v_pti;
		if (not f_get_pdu_session_establishment_request_ids(v_psi, v_pti)) {
		log("*** " & __SCOPE__ & ": FAIL: PDU_SESSION_ESTABLISHMENT_REQUEST mismatch.");
		setverdict(fail);
		setverdict(fail, "Received PDU_SESSION_ESTABLISHMENT_REQUEST NAS message");
		} else {
		log("*** " & __SCOPE__ & ": PASS: Expected PDU_SESSION_ESTABLISHMENT_REQUEST");
		setverdict(pass);
		setverdict(pass, "Received PDU_SESSION_ESTABLISHMENT_REQUEST NAS message");
		}
		}

		@@ -2016,6 +2020,7 @@ module LibNGAP_Functions {
		}
		));
		if (not f_NGAP_check_received_PDU(mw_ngap_initMsg(mw_n2_initialUeMessage_conformant), "INITIAL UE MESSAGE")) {
		log("f_send_ue_context_release_command_await_service_request_send_service_accept: Received INITIAL UE MESSAGE does not conform");
		return;
		}
		vc_RAN_UE_ID := vc_recvNGAP_PDU.initiatingMessage.value_.InitialUEMessage.protocolIEs[f_NGAP_getIEIndex(vc_recvNGAP_PDU, id_RAN_UE_NGAP_ID)].value_.rAN_UE_NGAP_ID;