pcu: Test SNS where initial IP/port is not part of configured NS-VCs
As per section 6.2.1 of 3GPP TS 48.016, the initial IP/port where the
SNS SIZE/CONFIG procedures are being performed is not automatically part
of the later NS-VCs. This means we shall not perform the NS-ALIVE
procedure or any other procedure beyond SNS with that specific endpoint.
This adds a new TC_sns_1c1u_separate() to test for this behavior.
Change-Id: Ie2a017250ca1d5386e2cf42d1945e61d170ac92d
Related: OS#3844
diff --git a/pcu/PCU_Tests_RAW_SNS.ttcn b/pcu/PCU_Tests_RAW_SNS.ttcn
index cc3cb5b..a216dbe 100644
--- a/pcu/PCU_Tests_RAW_SNS.ttcn
+++ b/pcu/PCU_Tests_RAW_SNS.ttcn
@@ -67,6 +67,19 @@
rx := f_ns_exp(tr_SNS_CONFIG_ACK(g_nsconfig[idx].nsei, cause), idx);
}
+/* perform outbound SNS-CONFIG procedure (separate endpoints: 1 for control, 1 for user */
+function f_outgoing_sns_config_1c1u_separate(template (omit) NsCause cause := omit, integer idx := 0)
+runs on RAW_NS_CT {
+ log("f_outgoing_sns_config_1c1u_separate(idx=", idx, ")");
+ var PDU_NS rx;
+ var template (omit) IP4_Elements v4 := { ts_SNS_IPv4(g_nsconfig[1].local_ip,
+ g_nsconfig[1].local_udp_port, 1, 0),
+ ts_SNS_IPv4(g_nsconfig[2].local_ip,
+ g_nsconfig[2].local_udp_port, 0, 1) };
+ NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_SNS_CONFIG(g_nsconfig[idx].nsei, true, v4)));
+ rx := f_ns_exp(tr_SNS_CONFIG_ACK(g_nsconfig[idx].nsei, cause), idx);
+}
+
function f_outgoing_sns_add(integer idx_add, uint8_t w_sig := 1, uint8_t w_user := 1, integer idx := 0)
runs on RAW_NS_CT {
log("f_outgoing_sns_add(idx_add=", idx_add, ")");
@@ -211,6 +224,52 @@
setverdict(pass);
}
+private function f_sns_bringup_1c1u_separate() runs on RAW_Test_CT {
+ /* Activate two NS codec ports */
+ f_init_ns_codec();
+ f_init_ns_codec(1);
+ f_init_ns_codec(2);
+ f_init_pcuif();
+ /* Perform Size + BSS-originated config */
+ f_incoming_sns_size();
+ f_incoming_sns_config();
+ /* perform SGSN-originated config using idx==0 for signalling and idx==1 for user traffic */
+ f_outgoing_sns_config_1c1u_separate();
+
+ /* wait for one ALIVE cycle, then ACK any further ALIVE in the background
+ * for both NS-VCs */
+ as_rx_alive_tx_ack(oneshot := true, idx := 1);
+ activate(as_rx_alive_tx_ack(idx := 1));
+ as_rx_alive_tx_ack(oneshot := true, idx := 2);
+ activate(as_rx_alive_tx_ack(idx := 2));
+ /* ensure there's no NS-ALIVE received on idx==0 */
+ f_ensure_no_ns(t_NS_ALIVE, idx := 0);
+
+ /* perform outgoing ALIVE procedure for both NS-VCs */
+ f_outgoing_ns_alive(1);
+ f_outgoing_ns_alive(2);
+ /* ensure there's no response to NS-ALIVE sent on idx==0 */
+ f_outgoing_ns_alive_no_ack(idx := 0);
+
+ /* Expect BVC-RESET for signaling BVCI=0 and ptp BVCI */
+ as_rx_bvc_reset_tx_ack(0, oneshot := true, idx := 1);
+ as_rx_bvc_reset_tx_ack(mp_gb_cfg.bvci, oneshot := true, idx := 1);
+ /* Expect UNBLOCK for ptp BVCI on signaling NS-VC (idx==1) */
+ as_rx_bvc_unblock_tx_ack(mp_gb_cfg.bvci, oneshot := true, idx := 1);
+
+ /* wait for one FLOW-CONTROL BVC and then ACK any further in the future. Flow
+ * control happens on the p-t-p BVCI and hence on index 1 */
+ as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, oneshot := true, idx := 2);
+ activate(as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, idx := 2));
+}
+
+/* Test full IP-SNS bring-up with two NS-VCs, one sig-only and one user-only - and where
+ * the initial IP/port for the SNS procedure is *not* part of the NS-VCs later */
+testcase TC_sns_1c1u_separate() runs on RAW_Test_CT {
+ f_sns_bringup_1c1u_separate();
+ setverdict(pass);
+}
+
/* Test adding new IP endpoints at runtime */
testcase TC_sns_add() runs on RAW_Test_CT {
f_sns_bringup_1c1u();
@@ -281,6 +340,7 @@
execute( TC_sns_po_config_nack() );
execute( TC_sns_so_config_success() );
execute( TC_sns_1c1u() );
+ execute( TC_sns_1c1u_separate() );
execute( TC_sns_add() );
execute( TC_sns_del() );
execute( TC_sns_chg_weight() );