laforge has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/21634 )
Change subject: gbproxy: Test case for BVC flow control procedure
......................................................................
gbproxy: Test case for BVC flow control procedure
Related: OS#4891
Change-Id: I6daa5848bd59b42f152de783bfdc602d1f2da861
---
M gbproxy/GBProxy_Tests.ttcn
1 file changed, 71 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks
refs/changes/34/21634/1
diff --git a/gbproxy/GBProxy_Tests.ttcn b/gbproxy/GBProxy_Tests.ttcn
index 9bd0550..5e81c13 100644
--- a/gbproxy/GBProxy_Tests.ttcn
+++ b/gbproxy/GBProxy_Tests.ttcn
@@ -726,6 +726,7 @@
port BSSGP_PT G_SGSN[NUM_SGSN];
};
+/* connect the signaling BVC of each NSE to the G_PCU / G_SGSN ports */
private function f_global_init() runs on GlobalTest_CT {
var integer i;
for (i := 0; i < lengthof(g_sgsn); i := i+1) {
@@ -736,6 +737,17 @@
}
}
+/* connect the first PTP BVC of each NSE to the G_PCU / G_SGSN ports */
+private function f_global_init_ptp() runs on GlobalTest_CT {
+ var integer i;
+ for (i := 0; i < lengthof(g_sgsn); i := i+1) {
+ connect(self:G_SGSN[i], g_sgsn[i].vc_BSSGP_BVC[0]:GLOBAL);
+ }
+ for (i := 0; i < lengthof(g_pcu); i := i+1) {
+ connect(self:G_PCU[i], g_pcu[i].vc_BSSGP_BVC[0]:GLOBAL);
+ }
+}
+
/* Send 'tx' on PTP-BVCI from PCU; expect 'rx' on SGSN */
friend function f_global_pcu2sgsn(template (value) PDU_BSSGP tx, template
(present) PDU_BSSGP exp_rx,
integer pcu_idx := 0, integer sgsn_idx := 0)
runs on GlobalTest_CT {
@@ -2324,6 +2336,64 @@
f_cleanup();
}
+/***********************************************************************
+ * FLOW-CONTROL-BVC procedure
+ ***********************************************************************/
+
+private altstep as_g_count_sgsn(integer sgsn_idx, inout ro_integer roi,
+ template PDU_BSSGP exp_rx, template (omit)
PDU_BSSGP tx_reply)
+runs on GlobalTest_CT {
+ [] G_SGSN[sgsn_idx].receive(exp_rx) {
+ roi := roi & { sgsn_idx };
+ if (ispresent(tx_reply)) {
+ G_SGSN[sgsn_idx].send(tx_reply);
+ }
+ }
+}
+/* Send FC-BVC from simulated PCU; expect each SGSN to receive it; expect PCU
to receive ACK */
+testcase TC_fc_bvc() runs on GlobalTest_CT
+{
+ f_init();
+ f_global_init_ptp();
+
+ var template (value) PDU_BSSGP pdu_tx := t_BVC_FC_BVC(10240, 2000,
1024, 1000, '01'O);
+ /* we cannot use pdu_tx as there are some subtle differences in the
length field :/ */
+ var template (present) PDU_BSSGP pdu_rx := tr_BVC_FC_BVC(10240, 2000,
1024, 1000, '01'O);
+ var template (omit) PDU_BSSGP ack_tx :=
+
t_BVC_FC_BVC_ACK(pdu_tx.pDU_BSSGP_FLOW_CONTROL_BVC.tag.unstructured_Value);
+
+ /* Send a FC-BVC from BSS to gbproxy, expect an ACK in response */
+ G_PCU[0].send(pdu_tx);
+
+ /* Activate altsteps: One for each SGSN-side PTP BVC port */
+ var ro_default defaults := {};
+ for (var integer i := 0; i < lengthof(g_sgsn); i := i+1) {
+ var default d := activate(as_g_count_sgsn(i, g_roi, pdu_rx,
ack_tx));
+ defaults := defaults & { d };
+ }
+
+ f_sleep(3.0);
+
+ for (var integer i := 0; i < lengthof(defaults); i := i+1) {
+ deactivate(defaults[i]);
+ }
+
+ /* check if BVC-block was received on all expected BVC */
+ for (var integer i := 0; i < lengthof(g_sgsn); i := i+1) {
+ if (not ro_integer_contains(g_roi, i)) {
+ setverdict(fail, "Missing BVC-FLOW-CONTROL on SGSN
index ", i);
+ }
+ }
+
+ /* Expect ACK on PCU side */
+ G_PCU[0].receive(ack_tx);
+
+ setverdict(pass);
+
+ f_cleanup();
+}
+
+
control {
execute( TC_BVC_bringup() );
execute( TC_ul_unitdata() );
@@ -2385,6 +2455,7 @@
execute( TC_flush_ll() );
+ execute( TC_fc_bvc() );
}
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I6daa5848bd59b42f152de783bfdc602d1f2da861
Gerrit-Change-Number: 21634
Gerrit-PatchSet: 1
Gerrit-Owner: laforge <lafo...@osmocom.org>
Gerrit-MessageType: newchange
