pcu: TC_t3193: Fix test to properly trigger tx of last DL data block
Since osmo-pcu.git 95ec50c9e4821ed1bdd15e9e30da1278ec1280c1, OsmoPCU
doesn't allow receiving a FINAL_ACK in FLOW state. This test was not
written properly and was taking advantage of that permissive logic in
osmo-pcu to trigger the target use case. Fix it to have the PCU send the
last DL data block (FBI=1) so that it can send a PKT DL ACK/NACK with
FinalAck=1 to terminate the DL TBF.
Change-Id: Ibd445bdd5cc1d1ffd810eea157829403b4b65f1f
diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn
index 9388f8f..343af34 100644
--- a/pcu/PCU_Tests.ttcn
+++ b/pcu/PCU_Tests.ttcn
@@ -1875,6 +1875,12 @@
/* Initialize the PCU interface abstraction */
f_init_raw(testcasename());
+ /* Disable "idle DL TBF alive" timer, to make the test easier and avoid
+ * having to keep receiving dummy LLC blocks for a while until the last
+ * block with FBI=1 is set. This way the first and only DL block is already
+ * the FBI one. */
+ f_vty_config2(PCUVTY, {"pcu"}, "timer X2031 0");
+
/* Establish BSSGP connection to the PCU */
f_bssgp_establish();
f_bssgp_client_llgmm_assign(TLLI_UNUSED, ms.tlli);
@@ -1886,6 +1892,10 @@
/* Wait timer X2002 and DL block is available after CCCH IMM ASS: */
f_sleep(X2002);
f_rx_rlcmac_dl_block_exp_data(dl_block, dl_fn, data, 0);
+ if (dl_block.data.mac_hdr.hdr_ext.fbi == false) {
+ setverdict(fail, "Expected DL data block with FBI=1 but got FBI=0");
+ f_shutdown(__BFILE__, __LINE__);
+ }
/* ACK the DL block */
f_acknackdesc_ack_block(ms.dl_tbf.acknack_desc, dl_block, '1'B);