Change in osmo-ttcn3-hacks[master]: fr: Add TC_ul2dl_ud

[laforge]

laforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/22696 )


Change subject: fr: Add TC_ul2dl_ud
......................................................................

fr: Add TC_ul2dl_ud

This test case tests NS-UL-UNITDATA transmit and expectes the exact same
LLC PDU to be sent back as NS-DL-UNITDATA.

This way we can verify that both uplink and downlink paths are working,
and that no messages are lost.  It works stable here on my laptop,
showing that if we test the TTCN3 NS + BSSGP code over a E1 line
against another instance (fr against fr-net) works reliable.

Change-Id: Ic115af02207c9b9f4c84fa75890048acb6856c79
---
M fr/FR_Tests.ttcn
1 file changed, 42 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/96/22696/1

diff --git a/fr/FR_Tests.ttcn b/fr/FR_Tests.ttcn
index a2c5e82..974765e 100644
--- a/fr/FR_Tests.ttcn
+++ b/fr/FR_Tests.ttcn
@@ -6,6 +6,7 @@
 
 import from NS_Emulation all;
 import from BSSGP_Emulation all;
+import from LLC_Types all;
 import from LLC_Templates all;
 
 modulepar {
@@ -256,9 +257,50 @@
 }
 
 
+private function f_ul2dl_ud(charstring id) runs on UE_CT
+{
+	for (var integer num_pkts := 0; num_pkts < 50; num_pkts := num_pkts + 1) {
+		var integer ran_index := 0;
+		var template (value) PDU_LLC llc_tx;
+		var template (present) PDU_LLC llc_rx_exp;
+		var PDU_LLC llc_rx;
+		timer T := 5.0;
+
+		/* SAPI '0010'B is looped back by FRNET_Tests.ttcn */
+		llc_tx := ts_LLC_UI(f_rnd_octstring(512), '0010'B, '1'B, 0);
+		llc_rx_exp := llc_tx;
+		llc_rx_exp.pDU_LLC_UI.fCS := ?;
+
+		//BSSGP[ran_index].send(ts_BSSGP_UL_UD(g_pars.tlli, g_pars.cell_id, llc_enc));
+		BSSGP[ran_index].send(llc_tx);
+		T.start;
+		alt {
+		[] BSSGP[ran_index].receive(llc_rx_exp) -> value llc_rx { }
+		[] BSSGP[ran_index].receive(PDU_LLC:?) ->  value llc_rx {
+			setverdict(fail, "Unexpected LLC: ", llc_rx);
+			break;
+			}
+		[] T.timeout {
+			setverdict(fail, "Timeout waiting for ", llc_rx_exp);
+			break;
+			}
+		}
+		//f_sleep(0.1);
+		/* 512 bytes + 32 bytes HDR every 0.5s (1088/s) means about 8704/s per UE */
+		/* at 100 UE that ends up about 870 kBps */
+	}
+}
+/* Generate uplink-unitdata traffic */
+testcase TC_ul2dl_ud() runs on test_CT
+{
+	f_tc_body(refers(f_ul2dl_ud), ue_tguard := 100.0);
+}
+
+
 control {
 	execute( TC_bvc_bringup() );
 	execute( TC_ul_ud() );
+	execute( TC_ul2dl_ud() );
 }
 
 }

-- 
To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/22696
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: Ic115af02207c9b9f4c84fa75890048acb6856c79
Gerrit-Change-Number: 22696
Gerrit-PatchSet: 1
Gerrit-Owner: laforge <laforge at osmocom.org>
Gerrit-MessageType: newchange
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