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pespin gerrit-no-reply at lists.osmocom.orgpespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/24906 )
Change subject: bsc: Introduce test TC_dyn_ts_sdcch8_tch_call_act_deact
......................................................................
bsc: Introduce test TC_dyn_ts_sdcch8_tch_call_act_deact
Related: SYS#24876
Change-Id: I6110fe0bf56f4dbf67265f0d4c97cdea0b410af4
---
M bsc/BSC_Tests.ttcn
1 file changed, 99 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/06/24906/1
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 6b079a6..d625027 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -605,6 +605,7 @@
var SystemInformationConfig_list g_system_information := {};
}
+type record of charstring phys_chan_configs;
modulepar {
/* IP address at which the BSC can be reached */
charstring mp_bsc_ip := "127.0.0.1";
@@ -655,6 +656,18 @@
}
};
+ /* Must match per BTS config in osmo-bsc.cfg */
+ phys_chan_configs phys_chan_config := {
+ "CCCH+SDCCH4+CBCH",
+ "TCH/F",
+ "TCH/F",
+ "TCH/F",
+ "TCH/F",
+ "TCH/F",
+ "PDCH",
+ "PDCH"
+ };
+
BSSAP_LE_Configuration mp_bssap_le_cfg := {
sccp_service_type := "mtp3_itu",
sctp_addr := { 23908, "127.0.0.1", 2905, "127.0.0.1" },
@@ -6568,6 +6581,14 @@
f_vty_transceive(BSCVTY, "end");
}
+
+private function f_ts_reset_chcomb(integer bts_nr) runs on test_CT {
+ var integer i;
+ for (i := 0; i < 8; i := i + 1) {
+ f_ts_set_chcomb(bts_nr, 0, i, phys_chan_config[i]);
+ }
+}
+
private const charstring TCHF_MODE := "TCH/F mode";
private const charstring TCHH_MODE := "TCH/H mode";
private const charstring PDCH_MODE := "PDCH mode";
@@ -6824,6 +6845,83 @@
f_shutdown_helper();
}
+/* Test Osmocom dyn TS SDCCH8 activation / deactivation: If activating dyn TS as
+ SDCCH8 would end up in having no free TCH, then BSC should decide to activate
+ it as TCH directly instead. SYS#5309. */
+testcase TC_dyn_ts_sdcch8_tch_call_act_deact() runs on test_CT {
+ var RSL_Message rsl_unused, rsl_msg;
+ var DchanTuple dt;
+ var BSSAP_N_CONNECT_ind rx_c_ind;
+ var integer i;
+
+ /* change Timeslot 6 before f_init() starts RSL */
+ f_init_vty();
+ for (i := 1; i < 8; i := i + 1) {
+ if (i == 6) {
+ f_ts_set_chcomb(0, 0, i, "TCH/F_TCH/H_SDCCH8_PDCH");
+ } else {
+ f_ts_set_chcomb(0, 0, i, "PDCH");
+ }
+ }
+ f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
+
+ f_init(1, false);
+ f_sleep(1.0);
+
+ var RslChannelNr pdch_chan_nr := valueof(t_RslChanNr_PDCH(6));
+
+ log("TCH/F_TCH/H_SDCCH8_PDCH pchan starts out in disabled mode:");
+ f_ts_dyn_mode_assert(0, 0, pdch_chan_nr.tn, NONE_MODE);
+ /* The BSC will activate the dynamic PDCH by default, so confirm that */
+ rsl_unused := f_exp_ipa_rx(0, tr_RSL_CHAN_ACT_PDCH(pdch_chan_nr, ?));
+
+ f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(pdch_chan_nr, 2342));
+ f_sleep(1.0);
+ log("TCH/F_TCH/H_SDCCH8_PDC requested to PDCH ACT on startup, which was ACKed, so now in PDCH:");
+ f_ts_dyn_mode_assert(0, 0, pdch_chan_nr.tn, PDCH_MODE);
+
+ /* Fill TS0 SDCCH channels (NOTE: only 3 SDCCH/4 channels are available
+ * on CCCH+SDCCH4+CBCH) */
+ for (i := 0; i < 3; i := i + 1) {
+ dt := f_est_dchan('23'O, i, '00010203040506'O);
+ }
+
+ /* Now the dyn ts is selected. First PDCH is released, then TCH chan is activated */
+ f_ipa_tx(0, ts_RSL_CHAN_RQD(int2oct(oct2int('23'O) + i, 1), 2342));
+ rsl_unused := f_exp_ipa_rx(0, tr_RSL_RF_CHAN_REL(pdch_chan_nr));
+ f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(pdch_chan_nr));
+
+ rsl_msg := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV));
+ dt.rsl_chan_nr := rsl_msg.ies[0].body.chan_nr;
+
+ f_ts_dyn_mode_assert(0, 0, dt.rsl_chan_nr.tn, TCHH_MODE);
+ f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(dt.rsl_chan_nr, 2342));
+ rsl_msg := f_exp_ipa_rx(0, tr_RSL_IMM_ASSIGN(0));
+ f_ts_dyn_mode_assert(0, 0, dt.rsl_chan_nr.tn, TCHH_MODE);
+
+ f_ipa_tx(0, ts_RSL_EST_IND(dt.rsl_chan_nr, valueof(ts_RslLinkID_DCCH(0)), '1234'O));
+ BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3('1234'O))) -> value rx_c_ind;
+ dt.sccp_conn_id := rx_c_ind.connectionId;
+ BSSAP.send(ts_BSSAP_CONNECT_res(dt.sccp_conn_id));
+
+ /* Instruct BSC to clear channel */
+ var BssmapCause cause := 0;
+ BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));
+ f_exp_chan_rel_and_clear(dt, 0);
+
+ /* The BSC will switch the TS back to PDCH once the only lchan using it is released: */
+ rsl_unused := f_exp_ipa_rx(0, tr_RSL_CHAN_ACT_PDCH(pdch_chan_nr, ?));
+ f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(pdch_chan_nr, 2342));
+ f_sleep(1.0);
+ f_ts_dyn_mode_assert(0, 0, pdch_chan_nr.tn, PDCH_MODE);
+
+ /* clean up config */
+ f_ts_reset_chcomb(0);
+ /* TODO: clean up other channels? */
+
+ f_shutdown_helper();
+}
+
/* Test Osmocom dyn TS SDCCH8 activation / deactivation when SDCCH fails at BTS */
testcase TC_dyn_ts_sdcch8_act_nack() runs on test_CT {
var RSL_Message rsl_unused, rsl_msg;
@@ -9360,6 +9458,7 @@
execute( TC_dyn_pdch_osmo_act_deact() );
execute( TC_dyn_pdch_osmo_act_nack() );
execute( TC_dyn_ts_sdcch8_act_deact() );
+ execute (TC_dyn_ts_sdcch8_tch_call_act_deact() );
execute( TC_dyn_ts_sdcch8_act_nack() );
execute( TC_chopped_ipa_ping() );
--
To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/24906
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I6110fe0bf56f4dbf67265f0d4c97cdea0b410af4
Gerrit-Change-Number: 24906
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-MessageType: newchange
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