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authorAlexander Couzens <lynxis@fe80.eu>2020-10-26 23:09:16 +0100
committerAlexander Couzens <lynxis@fe80.eu>2020-12-16 22:27:36 +0100
commit195c9e70c2f15f40e9cfe53ed05108179b68338d (patch)
treea55bc178dec381ee476074df0ad299c75728ad7c
parent8d09528ccff9460e844b9b1c7c776fbcf016688e (diff)
PCU_Tests_SNS: improve SGSN originated BVC-RESETs
The BVC-RESETs are a little bit more complicated. The PCU will send a BVC-RESET after the NSE become available. Ensure the RESET is received and ignored so there is no race condition if both sides send a BVC-RESET at the same time. The test case TC_sns_1c1u_so_bvc_reset is still failing because the PCU can't handle BVC-RESETs properly (both PTP and signalling). Change-Id: Id681749d75073c1d50a4b0a2e86f0a2dd0955b45
-rw-r--r--library/RAW_NS.ttcn15
-rw-r--r--pcu/PCU_Tests_SNS.ttcn23
2 files changed, 32 insertions, 6 deletions
diff --git a/library/RAW_NS.ttcn b/library/RAW_NS.ttcn
index 8540f38..7f7b6c4 100644
--- a/library/RAW_NS.ttcn
+++ b/library/RAW_NS.ttcn
@@ -68,16 +68,23 @@ function f_init_ns_codec(NSConfiguration ns_config, integer idx := 0, float guar
}
-function f_ns_exp(template PDU_NS exp_rx, integer idx := 0) runs on RAW_NS_CT return PDU_NS {
+public altstep ax_rx_fail_on_any_ns(integer idx := 0) runs on RAW_NS_CT {
var NS_RecvFrom nrf;
- log("f_ns_exp() expecting ", exp_rx);
- alt {
- [] NSCP[idx].receive(t_NS_RecvFrom(exp_rx)) -> value nrf { }
[] NSCP[idx].receive(t_NS_RecvFrom(?)) -> value nrf {
setverdict(fail, "Received unexpected NS: ", nrf);
mtc.stop;
}
+}
+
+function f_ns_exp(template PDU_NS exp_rx, integer idx := 0) runs on RAW_NS_CT return PDU_NS {
+ var NS_RecvFrom nrf;
+ log("f_ns_exp() expecting ", exp_rx);
+ /* last activated altstep has the lowest priority */
+ var default d := activate(ax_rx_fail_on_any_ns());
+ alt {
+ [] NSCP[idx].receive(t_NS_RecvFrom(exp_rx)) -> value nrf { }
}
+ deactivate(d);
return nrf.msg;
}
diff --git a/pcu/PCU_Tests_SNS.ttcn b/pcu/PCU_Tests_SNS.ttcn
index aed363b..ea78761 100644
--- a/pcu/PCU_Tests_SNS.ttcn
+++ b/pcu/PCU_Tests_SNS.ttcn
@@ -297,11 +297,21 @@ private function f_sns_bringup_1c1u(boolean sgsn_originated_reset := false) runs
f_outgoing_ns_alive(1);
if (sgsn_originated_reset) {
+ /* Expect BVC-RESET, but ignore it to prevent a race condition of BVC RESETs */
+ var template PDU_NS pdu := tr_NS_UNITDATA(t_SduCtrlB, 0, decmatch tr_BVC_RESET(?, 0, omit));
+ f_ns_exp(pdu);
+ /* SGSN originated BVC-RESET on an uninitialized signalling BVC */
f_tx_bvc_reset_rx_ack(0, omit, omit);
+
+ /* Expect BVC-RESET PTP BVC, but ignore it to prevent a race condition of BVC RESETs */
+ pdu := tr_NS_UNITDATA(t_SduCtrlB, 0, decmatch tr_BVC_RESET(?, mp_gb_cfg.bvc[0].bvci, mp_gb_cfg.bvc[0].cell_id));
+ f_ns_exp(pdu);
+ /* SGSN originated BVC-RESET on an uninitialized PTP BVC */
f_tx_bvc_reset_rx_ack(mp_gb_cfg.bvc[0].bvci, omit, mp_gb_cfg.bvc[0].cell_id);
} else {
- /* Expect BVC-RESET for signaling (0) and ptp BVCI */
+ /* Expect BVC-RESET for signaling BVCI=0 */
as_rx_bvc_reset_tx_ack(0, omit, omit, oneshot := true);
+ /* Expect BVC-RESET from the PCU on PTP BVC */
as_rx_bvc_reset_tx_ack(mp_gb_cfg.bvc[0].bvci, mp_gb_cfg.bvc[0].cell_id, omit, oneshot := true);
}
/* Expect UNBLOCK for ptp BVCI on signaling NS-VC (idx==0) */
@@ -347,11 +357,20 @@ private function f_sns_bringup_1c1u_separate(boolean sgsn_originated_reset := fa
f_outgoing_ns_alive_no_ack(idx := 0);
if (sgsn_originated_reset) {
+ /* Expect BVC-RESET, but ignore it to prevent a race condition of BVC RESETs */
+ var template PDU_NS pdu := tr_NS_UNITDATA(t_SduCtrlB, 0, decmatch tr_BVC_RESET(?, 0, omit));
+ f_ns_exp(pdu, idx := 1);
+ /* SGSN originated BVC-RESET on an uninitialized sign BVC */
f_tx_bvc_reset_rx_ack(0, omit, omit, idx := 1);
+
+ /* Expect BVC-RESET PTP BVC, but ignore it to prevent a race condition of BVC RESETs */
+ pdu := tr_NS_UNITDATA(t_SduCtrlB, 0, decmatch tr_BVC_RESET(?, mp_gb_cfg.bvc[0].bvci, mp_gb_cfg.bvc[0].cell_id));
+ f_ns_exp(pdu, idx := 1);
f_tx_bvc_reset_rx_ack(mp_gb_cfg.bvc[0].bvci, omit, mp_gb_cfg.bvc[0].cell_id, idx := 1);
} else {
- /* Expect BVC-RESET for signaling BVCI=0 and ptp BVCI */
+ /* Expect BVC-RESET for signaling BVCI=0 */
as_rx_bvc_reset_tx_ack(0, omit, omit, oneshot := true, idx := 1);
+ /* Expect BVC-RESET from the PCU on PTP BVC */
as_rx_bvc_reset_tx_ack(mp_gb_cfg.bvc[0].bvci, mp_gb_cfg.bvc[0].cell_id, omit, oneshot := true, idx := 1);
}
/* Expect UNBLOCK for ptp BVCI on signaling NS-VC (idx==1) */