Review at https://gerrit.osmocom.org/7224
bsc: add TC_bssmap_clear_does_not_cause_bssmap_reset() Same as TC_bssmap_rlsd_does_not_cause_bssmap_reset(), but with a proper BSSMAP Clear from the MSC first. Related: OS#3041 Change-Id: If6ca85d7b80a727cbfdabbf07529ced22602734e --- M bsc/BSC_Tests.ttcn 1 file changed, 63 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/24/7224/1 diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn index 71d1b51..a466d36 100644 --- a/bsc/BSC_Tests.ttcn +++ b/bsc/BSC_Tests.ttcn @@ -46,6 +46,8 @@ import from L3_Templates all; import from GSM_RR_Types all; +import from BSSMAP_Templates all; + const integer NUM_BTS := 3; const float T3101_MAX := 12.0; @@ -1744,6 +1746,66 @@ f_shutdown_helper(); } +/* OS#3041: Open and close N connections in a normal fashion, and expect no + * BSSMAP Reset just because of that. Invoke the release by a BSSMAP Clear from + * the MSC. */ +testcase TC_bssmap_clear_does_not_cause_bssmap_reset() runs on test_CT { + var default d; + var integer i; + var DchanTuple dt; + var BSSAP_N_DATA_ind rx_di; + var RSL_Message rx_rsl; + var myBSSMAP_Cause cause_val := GSM0808_CAUSE_CALL_CONTROL; + var BssmapCause cause := enum2int(cause_val); + + f_init(); + + /* Wait for initial BSSMAP Reset to pass */ + f_sleep(4.0); + + d := activate(no_bssmap_reset()); + + /* Setup up a number of connections and RLSD them again from the MSC + * side. In the buggy behavior, the fourth one triggers BSSMAP Reset. + * Let's do it some more times for good measure. */ + for (i := 0; i < 8; i := i+1) { + /* Since we're doing a lot of runs, give each one a fresh + * T_guard from the top. */ + T_guard.start; + + /* Setup a BSSAP connection and clear it right away. This is + * the MSC telling the BSC about a planned release, it's not an + * erratic loss of a connection. */ + dt := f_est_dchan('23'O, 23, '00010203040506'O); + + /* Instruct BSC to clear channel */ + BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause))); + + /* expect BSC to disable the channel */ + rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX); + /* respond with CHAN REL ACK */ + f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(dt.rsl_chan_nr)); + + /* expect Clear Complete from BSC */ + BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete)); + + /* MSC disconnects as instructed. */ + BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0)); + + + /* MSC disconnects (RLSD). */ + BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0)); + } + + /* In the buggy behavior, a timeout of 2 seconds happens between above + * trigger (logs "SIGTRAN connection down, reconnecting...") and the + * actual BSSMAP Reset. Wait a bit longer just to make sure. */ + f_sleep(4.0); + + deactivate(d); + f_shutdown_helper(); +} + control { /* CTRL interface testing */ execute( TC_ctrl_msc_connection_status() ); @@ -1819,6 +1881,7 @@ execute( TC_ho_int() ); execute( TC_bssap_rlsd_does_not_cause_bssmap_reset() ); + execute( TC_bssmap_clear_does_not_cause_bssmap_reset() ); } } -- To view, visit https://gerrit.osmocom.org/7224 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: If6ca85d7b80a727cbfdabbf07529ced22602734e Gerrit-PatchSet: 1 Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Owner: Neels Hofmeyr <nhofm...@sysmocom.de>