sgsn: Set up GTPv1U in emulated RNCs

Change-Id: Icf5fa28ea08cfd255b49b546eadd74e91a9c7ecf
---
M sgsn/SGSN_Tests.ttcn
M sgsn/SGSN_Tests_Iu.ttcn
2 files changed, 50 insertions(+), 14 deletions(-)

diff --git a/sgsn/SGSN_Tests.ttcn b/sgsn/SGSN_Tests.ttcn
index 8274d43..92f081d 100644
--- a/sgsn/SGSN_Tests.ttcn
+++ b/sgsn/SGSN_Tests.ttcn
@@ -164,12 +164,17 @@
 type record length(NUM_GB) of NSConfiguration NSConfigurations;
 
 const integer NUM_RNC := 1;
+type record IuInstance {
+	RAN_Adapter ranap,
+	GTP_Emulation_CT vc_RNC_GTP
+};
+type record length(NUM_RNC) of IuInstance IuInstances;
 type record of RAN_Configuration RAN_Configurations;
 
 type component test_CT {
 	var GbInstances g_gb;
-	var RAN_Adapter g_ranap[NUM_RNC];
-	var boolean g_ranap_enable := false;
+	var IuInstances g_iu;
+	var boolean g_iu_enable := false;
 
 	var GSUP_Emulation_CT vc_GSUP;
 	var IPA_Emulation_CT vc_GSUP_IPA;
@@ -267,6 +272,21 @@
 	}
 }
 
+private function f_init_rnc_gtp(charstring id, integer rnc_idx) runs on test_CT {
+	id := id & "-RNC_GTP";
+
+	var GtpEmulationCfg gtp_cfg := {
+		gtpc_bind_ip := omit,
+		gtpc_bind_port := omit,
+		gtpu_bind_ip := mp_ranap_cfg[rnc_idx].sctp_addr.local_ip_addr,
+		gtpu_bind_port := GTP1U_PORT,
+		sgsn_role := false
+	};
+
+	g_iu[rnc_idx].vc_RNC_GTP := GTP_Emulation_CT.create(id);
+	g_iu[rnc_idx].vc_RNC_GTP.start(GTP_Emulation.main(gtp_cfg));
+}
+
 private function f_init_ggsn_gtp(charstring id) runs on test_CT {
 	id := id & "-GGSN_GTP";
 
@@ -376,10 +396,11 @@
 	f_init_gb(g_gb[1], "SGSN_Test-Gb1", 1);
 	f_init_gb(g_gb[2], "SGSN_Test-Gb2", 2);
 
-	if (g_ranap_enable) {
+	if (g_iu_enable) {
 		for (i := 0; i < NUM_RNC; i := i+1) {
-			f_ran_adapter_init(g_ranap[i], mp_ranap_cfg[i], "SGSN_Test_" & int2str(i), RNC_RanOps);
-			f_ran_adapter_start(g_ranap[i]);
+			f_ran_adapter_init(g_iu[i].ranap, mp_ranap_cfg[i], "SGSN_Test_" & int2str(i), RNC_RanOps);
+			f_ran_adapter_start(g_iu[i].ranap);
+			f_init_rnc_gtp("SGSN_Test", i);
 		}
 	}
 	f_init_gsup("SGSN_Test");
@@ -389,9 +410,9 @@
 
 function f_cleanup() runs on test_CT {
 	var integer i;
-	if (g_ranap_enable) {
+	if (g_iu_enable) {
 		for (i := 0; i < NUM_RNC; i := i+1) {
-			f_ran_adapter_cleanup(g_ranap[i]);
+			f_ran_adapter_cleanup(g_iu[i].ranap);
 		}
 	}
 	self.stop;
@@ -438,9 +459,9 @@
 			gb[2].cfg.bvc[0].cell_id
 		}
 	pars := f_new_BSSGP_ConnHdlrPars(imsi_suffix, cell_ids, t_NetPars(expect_ciph := expect_ciph), t_guard := t_guard);
-	if (g_ranap_enable) {
-		pars.sccp_addr_local := g_ranap[0].sccp_addr_own;
-		pars.sccp_addr_peer := g_ranap[0].sccp_addr_peer;
+	if (g_iu_enable) {
+		pars.sccp_addr_local := g_iu[0].ranap.sccp_addr_own;
+		pars.sccp_addr_peer := g_iu[0].ranap.sccp_addr_peer;
 	}
 
 	vc_conn := BSSGP_ConnHdlr.create(id);
@@ -461,9 +482,15 @@
 	connect(vc_conn:BSSGP_GLOBAL[2], gb[2].vc_BSSGP:GLOBAL);
 
 	/* FIXME: support multiple RNCs */
-	if (g_ranap_enable) {
-		connect(vc_conn:BSSAP, g_ranap[0].vc_RAN:CLIENT);
-		connect(vc_conn:BSSAP_PROC, g_ranap[0].vc_RAN:PROC);
+	if (g_iu_enable) {
+		connect(vc_conn:BSSAP, g_iu[0].ranap.vc_RAN:CLIENT);
+		connect(vc_conn:BSSAP_PROC, g_iu[0].ranap.vc_RAN:PROC);
+
+		for (var integer i := 0; i < NUM_RNC; i := i+1) {
+			/* GTP[0] is used by emulated GGSN: */
+			connect(vc_conn:GTP[i + 1], g_iu[i].vc_RNC_GTP:CLIENT);
+			connect(vc_conn:GTP_PROC[i + 1], g_iu[i].vc_RNC_GTP:CLIENT_PROC);
+		}
 	}
 
 	connect(vc_conn:GSUP, vc_GSUP:GSUP_CLIENT);
diff --git a/sgsn/SGSN_Tests_Iu.ttcn b/sgsn/SGSN_Tests_Iu.ttcn
index 9825150..84679cd 100644
--- a/sgsn/SGSN_Tests_Iu.ttcn
+++ b/sgsn/SGSN_Tests_Iu.ttcn
@@ -15,7 +15,7 @@
 import from BSSGP_ConnHdlr all;
 
 private function f_init() runs on test_CT {
-	g_ranap_enable := true;
+	g_iu_enable := true;
 	SGSN_Tests.f_init();
 
 	/* default VTY configuration */

