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osmo-ttcn3-hacks
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bsc: Introduce test TC_dyn_ts_sdcch8_tch_call_act_deact 

Related: SYS#24876
Change-Id: I6110fe0bf56f4dbf67265f0d4c97cdea0b410af4
This commit is contained in:
Pau Espin 2021-07-09 13:20:19 +02:00 committed by pespin
parent 7eabd31aa6
commit 0953bf82ba
1 changed files with 99 additions and 0 deletions
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99
bsc/BSC_Tests.ttcn
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@ -605,6 +605,7 @@ type component test_CT extends CTRL_Adapter_CT {
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 @@ modulepar {
}
};
/* 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" },
@ -6619,6 +6632,14 @@ runs on test_CT {
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";
@ -6875,6 +6896,83 @@ testcase TC_dyn_ts_sdcch8_act_deact() runs on test_CT {
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;
@ -9413,6 +9511,7 @@ control {
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() );