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mme: TC_ue_cell_reselect_eutran_to_geran: Make sure oI flag is not set in DeleteSessionReq

Make sure Operation Indication is set to 0, to tell the SGW to keep the Session up at the PGW.

Change-Id: If863f260a274fec5921ed888216c1688ff115ade
---
M library/GTPv2_Templates.ttcn
M mme/MME_Tests.ttcn
2 files changed, 84 insertions(+), 5 deletions(-)

diff --git a/library/GTPv2_Templates.ttcn b/library/GTPv2_Templates.ttcn
index 65bc559..5dea7e9 100644
--- a/library/GTPv2_Templates.ttcn
+++ b/library/GTPv2_Templates.ttcn
@@ -283,8 +283,74 @@
 	additionalOctets := *
 }
 
+/* 8.12 */
+template (present) Indication
+tr_GTP2C_Indication(template (present) BIT1 oI := ?) := {
+	elementIdentifier := '4D'O,
+	lengthIndicator := ?,
+	instance := '0000'B,
+	spare := '0000'B,
+	sGWCI := ?,
+	iSRAI := ?,
+	iSRSI := ?,
+	oI := oI,
+	dFI := ?,
+	hI := ?,
+	dTF := ?,
+	dAF := ?,
+	mSV := ?,
+	sI := ?,
+	pT := ?,
+	pBit := ?,
+	cRSI := ?,
+	cFSI := ?,
+	uIMSI := ?,
+	sQCI := ?,
+	cCRSI := *,
+	iSRAU := *,
+	mBMDT := *,
+	s4AF := *,
+	s6AF := *,
+	sRNI := *,
+	pBIC := *,
+	retLoc := *,
+	cPSR := *,
+	cLII := *,
+	cSFBI := *,
+	pPSI := *,
+	pPON_PPEI := *,
+	pPOF := *,
+	aRRL := *,
+	cPRAI := *,
+	aOPI := *,
+	aOSI := *,
+	pCRI := *,
+	pSCI := *,
+	bDWI := *,
+	dTCI := *,
+	uASI := *,
+	nSI := *,
+	wPMSI := *,
+	uNACCSI := *,
+	pNSI := *,
+	s11TF := *,
+	pMTSMI := *,
+	cPOPCI := *,
+	ePCOSI := *,
+	rOAAI := *,
+	tSPCMI := *,
+	spare_1 := *,
+	spare_2 := *,
+	spare_3 := *,
+	spare_4 := *,
+	spare_5 := *,
+	spare_6 := *,
+	spare_7 := *,
 
 
+	additionalOctets := *
+}
+
 /* 8.14 */
 template (value) PDN_AddressAllocation
 ts_GTP2C_PdnAddrAlloc(template (value) BIT3 pdn_type,
@@ -943,13 +1009,14 @@
 			  template (present) OCT3 seq := ?,
 			  template GTP2C_Cause cause := *,
 			  template (present) uint4_t bearer_id := ?,
+			  template Indication indicationFlags := *,
 			  template FullyQualifiedTEID sender_fteid := *) :=
 tr_PDU_GTP2C(d_teid, seq, {
 	deleteSessionRequest := {
 		cause := fr_GTP2C_Cause(cause),
 		linkedEPS_Bearer_ID := tr_GTP2C_EpsBearerId(bearer_id),
 		uLI := *,
-		indicationFlags := *,
+		indicationFlags := indicationFlags,
 		protocolConfigOptions := *,
 		originatingNode := *,
 		fullyQualifiedTEID := sender_fteid,
diff --git a/mme/MME_Tests.ttcn b/mme/MME_Tests.ttcn
index 339f121..c931449 100644
--- a/mme/MME_Tests.ttcn
+++ b/mme/MME_Tests.ttcn
@@ -835,10 +835,10 @@
 	}
 }
 
-private altstep as_GTP2C_DeleteSession_success() runs on ConnHdlr {
+private altstep as_GTP2C_DeleteSession_success(template Indication ind_flags := *) runs on ConnHdlr {
 	var PDU_GTPCv2 rx_msg;
 
-	[] GTP2.receive(tr_GTP2C_DeleteSessionReq(g_pars.ue_pars.s11_teic_local)) -> value rx_msg {
+	[] GTP2.receive(tr_GTP2C_DeleteSessionReq(g_pars.ue_pars.s11_teic_local, indicationFlags := ind_flags)) -> value rx_msg {
 		GTP2.send(ts_GTP2C_DeleteSessionResp(g_pars.ue_pars.s11_teic_remote,
 						     rx_msg.sequenceNumber,
 						     Request_accepted));
@@ -1352,9 +1352,10 @@
 	as_s1ap_handle_UeContextReleaseCmd();
 
 	/* TS 23.401 Figure D.3.5-1 Step 13:
-	 * After Gn timer triggers, the SGW session is deleted:
+	 * After Gn timer triggers, the SGW session is deleted.
+	 * Make sure Operation Indication is set to 0, to tell the SGW to keep the Session up at the PGW.
 	 */
-	as_GTP2C_DeleteSession_success();
+	as_GTP2C_DeleteSession_success(tr_GTP2C_Indication(oI := '0'B));
 	/* Let MME some time to handle the Create Session Response: */
 	f_sleep(3.0);
 }

