pcu: Introduce several tests TC_nacc_outbound_pkt_cell_chg_notif_dup*
These tests verify retransmission of duplicated Pkt Cell Change
Notification messages are ignored once the NACC procedure is already
ongoig.
Related: SYS#4909
Change-Id: Ib83eacfab7a73a2a51ab08801ff1c00c0058057c
diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn
index a937bf4..2b6c17f 100644
--- a/pcu/PCU_Tests.ttcn
+++ b/pcu/PCU_Tests.ttcn
@@ -4245,6 +4245,217 @@
f_shutdown(__BFILE__, __LINE__, final := true);
}
+/* Test MS sending Pkt Cell Change Notification twice (duplicate msg) while sending Pkt Neigh Data Change */
+testcase TC_nacc_outbound_pkt_cell_chg_notif_dup3() runs on RAW_PCU_Test_CT {
+ var PollFnCtx pollctx;
+ var GprsMS ms;
+ var PCUIF_info_ind info_ind := valueof(ts_PCUIF_INFO_default);
+ var template (value) RlcmacUlCtrlMsg cell_chf_notif;
+ var RlcmacDlBlock dl_block;
+ var uint32_t sched_fn;
+ var CtrlMessage rx_ctrl;
+ var GsmArfcn req_arfcn := 862;
+ var uint6_t req_bsic := 43;
+
+ /* Initialize osmo-bsc emulation neighbor resolution CTRL port */
+ f_ipa_ctrl_start_server(mp_ctrl_neigh_ip, mp_ctrl_neigh_port);
+
+ /* Initialize NS/BSSGP side */
+ f_init_bssgp();
+ /* Initialize GPRS MS side */
+ f_init_gprs_ms();
+ ms := g_ms[0]; /* We only use first MS in this test */
+
+ /* Initialize the PCU interface abstraction */
+ f_init_raw(testcasename(), info_ind);
+
+ /* Make sure we are not affected by full cache from previous tests */
+ f_pcuvty_flush_neigh_caches();
+
+ /* Establish BSSGP connection to the PCU */
+ f_bssgp_establish();
+ f_bssgp_client_llgmm_assign(TLLI_UNUSED, ms.tlli);
+
+ /* Send PACKET RESOURCE REQUEST */
+ pollctx := f_ms_establish_ul_tbf_2phase_access(ms, ts_RlcMacUlCtrl_PKT_RES_REQ(ms.tlli, ms_racap_gprs_def));
+ /* Pkt Uplink Assignment above sets poll+rrbp requesting PACKET CONTROL ACK */
+ f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), pollctx.fn, nr := pollctx.tstrxbts);
+
+ /* Start NACC from MS side */
+ cell_chf_notif := ts_RlcMacUlCtrl_PKT_CELL_CHG_NOTIF(ms.ul_tbf.tfi, req_arfcn, req_bsic);
+ f_ms_tx_ul_block(ms, ts_RLC_UL_CTRL_ACK(cell_chf_notif), 0, nr := f_ms_tx_TsTrxBtsNum(ms));
+
+ /* osmo-pcu should now ask for resolution: */
+ f_ipa_ctrl_wait_link_up();
+ var charstring ctrl_var := "neighbor_resolve_cgi_ps_from_lac_ci." &
+ int2str(info_ind.lac) & "." &
+ int2str(info_ind.cell_id) & "." &
+ int2str(req_arfcn) & "." &
+ int2str(req_bsic);
+ f_ctrl_exp_get(IPA_CTRL, ctrl_var, "023-43-423-2-5");
+ /* RIM procedure: */
+ as_outbound_nacc_rim_resolve(info_ind);
+
+ /* Receive first Pkt Neigh data Change, then trigger a new Pkt Cell Change Notif: */
+ f_ms_handle_pkt_neighbor_cell_data(ms, si_default, single_step := true);
+ f_ms_tx_ul_block(ms, ts_RLC_UL_CTRL_ACK(cell_chf_notif), 0, nr := f_ms_tx_TsTrxBtsNum(ms));
+
+ /* It should be ignored, let's continue fetching Pkt Neigh Data Change */
+ f_ms_handle_pkt_neighbor_cell_data(ms, si_default, f_ms_tx_TsTrxBtsNum(ms), 1, 16);
+
+ /* Obtain a Downlink block and make sure it is a Pkt Cell Chg Continue */
+ f_rx_rlcmac_dl_block(dl_block, sched_fn);
+ if (not match(dl_block, tr_RLCMAC_DL_CTRL(?, tr_RlcMacDlCtrl_PKT_CELL_CHG_CONTINUE))) {
+ setverdict(fail, "Rx unexpected DL block: ", dl_block);
+ f_shutdown(__BFILE__, __LINE__);
+ }
+ /* PKT CELL CHG CONTINUE ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */
+ if (dl_block.ctrl.mac_hdr.rrbp_valid) {
+ sched_fn := f_rrbp_ack_fn(sched_fn, dl_block.ctrl.mac_hdr.rrbp);
+ f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), sched_fn);
+ }
+}
+
+/* Test MS sending Pkt Cell Change Notification twice (duplicate msg) while sending Pkt Cell Change Continue */
+testcase TC_nacc_outbound_pkt_cell_chg_notif_dup4() runs on RAW_PCU_Test_CT {
+ var PollFnCtx pollctx;
+ var GprsMS ms;
+ var PCUIF_info_ind info_ind := valueof(ts_PCUIF_INFO_default);
+ var template (value) RlcmacUlCtrlMsg cell_chf_notif;
+ var RlcmacDlBlock dl_block;
+ var uint32_t sched_fn;
+ var CtrlMessage rx_ctrl;
+ var GsmArfcn req_arfcn := 862;
+ var uint6_t req_bsic := 43;
+
+ /* Initialize osmo-bsc emulation neighbor resolution CTRL port */
+ f_ipa_ctrl_start_server(mp_ctrl_neigh_ip, mp_ctrl_neigh_port);
+
+ /* Initialize NS/BSSGP side */
+ f_init_bssgp();
+ /* Initialize GPRS MS side */
+ f_init_gprs_ms();
+ ms := g_ms[0]; /* We only use first MS in this test */
+
+ /* Initialize the PCU interface abstraction */
+ f_init_raw(testcasename(), info_ind);
+
+ /* Make sure we are not affected by full cache from previous tests */
+ f_pcuvty_flush_neigh_caches();
+
+ /* Establish BSSGP connection to the PCU */
+ f_bssgp_establish();
+ f_bssgp_client_llgmm_assign(TLLI_UNUSED, ms.tlli);
+
+ /* Send PACKET RESOURCE REQUEST */
+ pollctx := f_ms_establish_ul_tbf_2phase_access(ms, ts_RlcMacUlCtrl_PKT_RES_REQ(ms.tlli, ms_racap_gprs_def));
+ /* Pkt Uplink Assignment above sets poll+rrbp requesting PACKET CONTROL ACK */
+ f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), pollctx.fn, nr := pollctx.tstrxbts);
+
+ /* Start NACC from MS side */
+ cell_chf_notif := ts_RlcMacUlCtrl_PKT_CELL_CHG_NOTIF(ms.ul_tbf.tfi, req_arfcn, req_bsic);
+ f_ms_tx_ul_block(ms, ts_RLC_UL_CTRL_ACK(cell_chf_notif), 0, nr := f_ms_tx_TsTrxBtsNum(ms));
+
+ /* osmo-pcu should now ask for resolution: */
+ f_ipa_ctrl_wait_link_up();
+ var charstring ctrl_var := "neighbor_resolve_cgi_ps_from_lac_ci." &
+ int2str(info_ind.lac) & "." &
+ int2str(info_ind.cell_id) & "." &
+ int2str(req_arfcn) & "." &
+ int2str(req_bsic);
+ f_ctrl_exp_get(IPA_CTRL, ctrl_var, "023-43-423-2-5");
+ /* RIM procedure: */
+ as_outbound_nacc_rim_resolve(info_ind);
+
+ /* Announce SI back to MS, continue NACC procedure */
+ f_ms_handle_pkt_neighbor_cell_data(ms, si_default);
+
+ /* trigger a dup Pkt Cell Change Notif, it should be ignored: */
+ f_ms_tx_ul_block(ms, ts_RLC_UL_CTRL_ACK(cell_chf_notif), 0, nr := f_ms_tx_TsTrxBtsNum(ms));
+
+ /* Obtain a Downlink block and make sure it is a Pkt Cell Chg Continue */
+ f_rx_rlcmac_dl_block(dl_block, sched_fn);
+ if (not match(dl_block, tr_RLCMAC_DL_CTRL(?, tr_RlcMacDlCtrl_PKT_CELL_CHG_CONTINUE))) {
+ setverdict(fail, "Rx unexpected DL block: ", dl_block);
+ f_shutdown(__BFILE__, __LINE__);
+ }
+ /* PKT CELL CHG CONTINUE ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */
+ if (dl_block.ctrl.mac_hdr.rrbp_valid) {
+ sched_fn := f_rrbp_ack_fn(sched_fn, dl_block.ctrl.mac_hdr.rrbp);
+ f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), sched_fn);
+ }
+}
+
+/* Test MS sending Pkt Cell Change Notification twice (duplicate msg) while waiting for Pkt Cell Change Continue CTRL ACK */
+testcase TC_nacc_outbound_pkt_cell_chg_notif_dup5() runs on RAW_PCU_Test_CT {
+ var PollFnCtx pollctx;
+ var GprsMS ms;
+ var PCUIF_info_ind info_ind := valueof(ts_PCUIF_INFO_default);
+ var template (value) RlcmacUlCtrlMsg cell_chf_notif;
+ var RlcmacDlBlock dl_block;
+ var uint32_t sched_fn;
+ var CtrlMessage rx_ctrl;
+ var GsmArfcn req_arfcn := 862;
+ var uint6_t req_bsic := 43;
+
+ /* Initialize osmo-bsc emulation neighbor resolution CTRL port */
+ f_ipa_ctrl_start_server(mp_ctrl_neigh_ip, mp_ctrl_neigh_port);
+
+ /* Initialize NS/BSSGP side */
+ f_init_bssgp();
+ /* Initialize GPRS MS side */
+ f_init_gprs_ms();
+ ms := g_ms[0]; /* We only use first MS in this test */
+
+ /* Initialize the PCU interface abstraction */
+ f_init_raw(testcasename(), info_ind);
+
+ /* Make sure we are not affected by full cache from previous tests */
+ f_pcuvty_flush_neigh_caches();
+
+ /* Establish BSSGP connection to the PCU */
+ f_bssgp_establish();
+ f_bssgp_client_llgmm_assign(TLLI_UNUSED, ms.tlli);
+
+ /* Send PACKET RESOURCE REQUEST */
+ pollctx := f_ms_establish_ul_tbf_2phase_access(ms, ts_RlcMacUlCtrl_PKT_RES_REQ(ms.tlli, ms_racap_gprs_def));
+ /* Pkt Uplink Assignment above sets poll+rrbp requesting PACKET CONTROL ACK */
+ f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), pollctx.fn, nr := pollctx.tstrxbts);
+
+ /* Start NACC from MS side */
+ cell_chf_notif := ts_RlcMacUlCtrl_PKT_CELL_CHG_NOTIF(ms.ul_tbf.tfi, req_arfcn, req_bsic);
+ f_ms_tx_ul_block(ms, ts_RLC_UL_CTRL_ACK(cell_chf_notif), 0, nr := f_ms_tx_TsTrxBtsNum(ms));
+
+ /* osmo-pcu should now ask for resolution: */
+ f_ipa_ctrl_wait_link_up();
+ var charstring ctrl_var := "neighbor_resolve_cgi_ps_from_lac_ci." &
+ int2str(info_ind.lac) & "." &
+ int2str(info_ind.cell_id) & "." &
+ int2str(req_arfcn) & "." &
+ int2str(req_bsic);
+ f_ctrl_exp_get(IPA_CTRL, ctrl_var, "023-43-423-2-5");
+ /* RIM procedure: */
+ as_outbound_nacc_rim_resolve(info_ind);
+
+ /* Announce SI back to MS, continue NACC procedure */
+ f_ms_handle_pkt_neighbor_cell_data(ms, si_default);
+
+ /* Obtain a Downlink block and make sure it is a Pkt Cell Chg Continue */
+ f_rx_rlcmac_dl_block(dl_block, sched_fn);
+ if (not match(dl_block, tr_RLCMAC_DL_CTRL(?, tr_RlcMacDlCtrl_PKT_CELL_CHG_CONTINUE))) {
+ setverdict(fail, "Rx unexpected DL block: ", dl_block);
+ f_shutdown(__BFILE__, __LINE__);
+ }
+ /* trigger a dup Pkt Cell Change Notif, it should be ignored: */
+ f_ms_tx_ul_block(ms, ts_RLC_UL_CTRL_ACK(cell_chf_notif), 0, nr := f_ms_tx_TsTrxBtsNum(ms));
+
+ /* PKT CELL CHG CONTINUE ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */
+ if (dl_block.ctrl.mac_hdr.rrbp_valid) {
+ sched_fn := f_rrbp_ack_fn(sched_fn, dl_block.ctrl.mac_hdr.rrbp);
+ f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), sched_fn);
+ }
+}
+
/* Test MS sending Pkt Cell Change Notify twice (different tgt cell each time)
* while waiting for CTRL resolution */
testcase TC_nacc_outbound_pkt_cell_chg_notif_twice() runs on RAW_PCU_Test_CT {
@@ -4642,6 +4853,9 @@
execute( TC_nacc_outbound_si_resolve_timeout() );
execute( TC_nacc_outbound_pkt_cell_chg_notif_dup() );
execute( TC_nacc_outbound_pkt_cell_chg_notif_dup2() );
+ execute( TC_nacc_outbound_pkt_cell_chg_notif_dup3() );
+ execute( TC_nacc_outbound_pkt_cell_chg_notif_dup4() );
+ execute( TC_nacc_outbound_pkt_cell_chg_notif_dup5() );
execute( TC_nacc_outbound_pkt_cell_chg_notif_twice() );
execute( TC_nacc_outbound_pkt_cell_chg_notif_twice2() );