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osmo-ttcn3-hacks
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bsc: Introduce test TC_dyn_ts_sdcch8_all_subslots_used 

Related: OS#5278
Related: SYS#5309
Change-Id: Iee37eef2012ce2c2e2f0a0db4c26abb75a947d84
This commit is contained in:
Neels Hofmeyr 2021-10-23 23:13:01 +02:00
parent 4038d4c4bd
commit e1a7c4d938
1 changed files with 79 additions and 0 deletions
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79
bsc/BSC_Tests.ttcn
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@ -1672,6 +1672,37 @@ runs on test_CT return DchanTuple {
return dt;
}
/* Like f_est_dchan(), but for the first lchan of a dynamic timeslot: first ACK the deactivation of PDCH. */
function f_est_dchan_dyn(OCT1 ra, GsmFrameNumber fn, octetstring l3)
runs on test_CT return DchanTuple {
var BSSAP_N_CONNECT_ind rx_c_ind;
var DchanTuple dt;
/* Send CHAN RQD */
var RSL_Message rx_rsl;
f_ipa_tx(0, ts_RSL_CHAN_RQD(ra, fn));
/* The dyn TS first deactivates PDCH */
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX);
dt.rsl_chan_nr := rx_rsl.ies[0].body.chan_nr;
f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(dt.rsl_chan_nr));
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV));
dt.rsl_chan_nr := rx_rsl.ies[0].body.chan_nr;
/* Now activates the signalling channel */
f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(dt.rsl_chan_nr, fn+10));
rx_rsl := f_exp_ipa_rx(0, tr_RSL_IMM_ASSIGN(0));
f_ipa_tx(0, ts_RSL_EST_IND(dt.rsl_chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3));
BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) -> value rx_c_ind;
dt.sccp_conn_id := rx_c_ind.connectionId;
BSSAP.send(ts_BSSAP_CONNECT_res(dt.sccp_conn_id));
return dt;
}
/* expect RF CAN REL from BTS, acknowledge it and clear the MSC side */
private function f_exp_chan_rel_and_clear(DchanTuple dt, integer bts_nr := 0) runs on test_CT {
var RSL_Message rx_rsl;
@ -7241,6 +7272,53 @@ testcase TC_dyn_ts_sdcch8_act_deact() runs on test_CT {
f_shutdown_helper();
}
/* Validate all 8 subslots of a dynamics TS configured as SDCCH8 are used */
testcase TC_dyn_ts_sdcch8_all_subslots_used() runs on test_CT {
var ASP_RSL_Unitdata rsl_ud;
var integer i;
var integer chreq_total, chreq_nochan;
f_init_vty();
for (i := 1; i < 8; i := i + 1) {
if (i == 2) {
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);
/* The dyn TS want to activate PDCH mode, ACK that. */
var RslChannelNr chan_nr;
chan_nr := valueof(t_RslChanNr_PDCH(2));
f_exp_ipa_rx(0, tr_RSL_CHAN_ACT_PDCH(chan_nr, ?));
f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, 2342));
f_sleep(1.0);
/* Exhaust all dedicated SDCCH lchans.
/* GSM 44.018 Table 9.1.8.2:
* RA = '13'O -> Establishment cause = 0001xxxx (MS dual rate capable and asks for "SDCCH").
*/
for (i := 0; i < NUM_SDCCH_PER_BTS; i := i+1) {
f_est_dchan('13'O, NUM_SDCCH_PER_BTS + i, '00010203040506'O);
}
/* Only the dyn TS is still available. Its first lchan gets converted to SDCCH8 */
f_est_dchan_dyn('33'O, NUM_SDCCH_PER_BTS + i, '00010203040506'O);
/* Also occupy the seven other SDCCH of the dyn TS */
for (i := 0; i < 7; i := i+1) {
f_est_dchan('33'O, NUM_SDCCH_PER_BTS + i, '00010203040506'O);
}
/* clean up config */
f_ts_reset_chcomb(0);
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. */
@ -10517,6 +10595,7 @@ control {
execute( TC_dyn_pdch_osmo_act_nack() );
if (mp_enable_dyn_sdcch8_test) {
execute( TC_dyn_ts_sdcch8_act_deact() );
execute( TC_dyn_ts_sdcch8_all_subslots_used() );
execute( TC_dyn_ts_sdcch8_tch_call_act_deact() );
execute( TC_dyn_ts_sdcch8_act_nack() );
}