pespin has submitted this change. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/25009 )
Change subject: bsc: Test tch allocation if sdcch exhausted
......................................................................
bsc: Test tch allocation if sdcch exhausted
Related: SYS#5548
Change-Id: I0c958de10a3643f8b94479d676dd1ac1b9140802
---
M bsc/BSC_Tests.ttcn
M bsc/expected-results.xml
2 files changed, 121 insertions(+), 0 deletions(-)
Approvals:
Jenkins Builder: Verified
osmith: Looks good to me, but someone else must approve
Hoernchen: Looks good to me, but someone else must approve
pespin: Looks good to me, approved
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 5d56105..47e2ad9 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -4517,6 +4517,108 @@
f_shutdown_helper();
}
+/* request a signalling channel with all SDCCH exhausted, it is expected that
a TCH will be selected */
+private function f_TC_assignment_sdcch_exhausted_req_signalling(charstring id)
runs on MSC_ConnHdlr {
+ g_pars := f_gen_test_hdlr_pars();
+ g_pars.ra := '02'O; /* RA containing reason=LU */
+
+ var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV(g_pars.imsi));
+ var PDU_ML3_MS_NW l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL,
mi));
+ var octetstring l3_enc := enc_PDU_ML3_MS_NW(l3_info);
+ var template uint3_t tsc := ?;
+
+ f_MscConnHdlr_init(g_pars.media_nr, host_bts, host_mgw_mgcp, FR_AMR);
+ f_create_bssmap_exp(l3_enc);
+ /* call helper function for CHAN_RQD -> IMM ASS ->EST_IND */
+ RSL_Emulation.f_chan_est(g_pars.ra, l3_enc, g_pars.link_id, g_pars.fn,
tsc);
+
+ /* we should now have a COMPL_L3 at the MSC */
+ timer T := 10.0;
+ T.start;
+ alt {
+ [] BSSAP.receive(tr_BSSMAP_ComplL3);
+ [] T.timeout {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout
waiting for COMPLETE LAYER 3 INFORMATION");
+ }
+ }
+}
+testcase TC_assignment_sdcch_exhausted_req_signalling() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+ f_init(1, true);
+ f_sleep(1.0);
+ f_disable_all_sdcch();
+ vc_conn :=
f_start_handler(refers(f_TC_assignment_sdcch_exhausted_req_signalling));
+ vc_conn.done;
+ f_enable_all_sdcch();
+ f_shutdown_helper();
+}
+
+/* Request a signalling channel with all SDCCH exhausted, it is
+ expected that no TCH will be selected for signalling and assigment will fail
+ because it's dictated by VTY config */
+testcase TC_assignment_sdcch_exhausted_req_signalling_tch_forbidden() runs on
test_CT {
+ var RSL_Message rsl_unused, rsl_msg;
+ var GsmRrMessage rr;
+ f_init(1, false);
+ f_sleep(1.0);
+ f_vty_allow_tch_for_signalling(false, 0);
+ f_disable_all_sdcch();
+
+ /* RA containing reason=LU */
+ f_ipa_tx(0, ts_RSL_CHAN_RQD('02'O, 2342));
+ rsl_msg := f_exp_ipa_rx(0, tr_RSL_IMM_ASSIGN(0));
+ rr := dec_GsmRrMessage(rsl_msg.ies[1].body.full_imm_ass_info.payload);
+ if (rr.header.message_type != IMMEDIATE_ASSIGNMENT_REJECT) {
+ setverdict(fail, "Expected reject");
+ }
+
+ f_vty_allow_tch_for_signalling(true, 0);
+ f_enable_all_sdcch();
+ f_shutdown_helper();
+}
+
+/* Request a voice channel with all SDCCH exhausted, it is
+ * expected that TCH channel will be allocated since the VTY option is only
+ * aimed at signalling requests */
+private function
f_TC_assignment_sdcch_exhausted_req_voice_tch_forbidden(charstring id) runs on
MSC_ConnHdlr {
+ g_pars := f_gen_test_hdlr_pars();
+ g_pars.ra := '43'O; /* RA containing reason=originating speech call*/
+
+ var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV(g_pars.imsi));
+ var PDU_ML3_MS_NW l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL,
mi));
+ var octetstring l3_enc := enc_PDU_ML3_MS_NW(l3_info);
+ var template uint3_t tsc := ?;
+
+ f_MscConnHdlr_init(g_pars.media_nr, host_bts, host_mgw_mgcp, FR_AMR);
+ f_create_bssmap_exp(l3_enc);
+ /* call helper function for CHAN_RQD -> IMM ASS ->EST_IND */
+ RSL_Emulation.f_chan_est(g_pars.ra, l3_enc, g_pars.link_id, g_pars.fn,
tsc);
+
+ /* we should now have a COMPL_L3 at the MSC */
+ timer T := 10.0;
+ T.start;
+ alt {
+ [] BSSAP.receive(tr_BSSMAP_ComplL3);
+ [] T.timeout {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout
waiting for COMPLETE LAYER 3 INFORMATION");
+ }
+ }
+}
+testcase TC_assignment_sdcch_exhausted_req_voice_tch_forbidden() runs on
test_CT {
+ var MSC_ConnHdlr vc_conn;
+ f_init(1, true);
+ f_sleep(1.0);
+ f_vty_allow_tch_for_signalling(false, 0);
+ f_disable_all_sdcch();
+
+ vc_conn :=
f_start_handler(refers(f_TC_assignment_sdcch_exhausted_req_voice_tch_forbidden));
+ vc_conn.done;
+
+ f_vty_allow_tch_for_signalling(true, 0);
+ f_enable_all_sdcch();
+ f_shutdown_helper();
+}
+
testcase TC_assignment_osmux() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
@@ -7829,6 +7931,19 @@
f_vty_transceive(BSCVTY, "exit");
}
+/* Allow/Forbid TCH for signalling if SDCCH exhausted on a given BTS via VTY */
+private function f_vty_allow_tch_for_signalling(boolean allow, integer bts_nr)
runs on test_CT {
+ f_vty_enter_cfg_bts(BSCVTY, bts_nr);
+ if (allow) {
+ f_vty_transceive(BSCVTY, "channel allocator
allow-tch-for-signalling 1");
+ } else {
+ f_vty_transceive(BSCVTY, "channel allocator
allow-tch-for-signalling 0");
+ }
+ f_vty_transceive(BSCVTY, "exit");
+ f_vty_transceive(BSCVTY, "exit");
+ f_vty_transceive(BSCVTY, "exit");
+}
+
/* Begin assignmet procedure and send an EMERGENCY SETUP (RR) */
private function f_assignment_emerg_setup() runs on MSC_ConnHdlr {
var PDU_ML3_MS_NW emerg_setup;
@@ -9408,6 +9523,9 @@
execute( TC_assignment_codec_hr_exhausted_req_fr_hr() );
execute( TC_assignment_codec_req_hr_fr() );
execute( TC_assignment_codec_req_fr_hr() );
+ execute( TC_assignment_sdcch_exhausted_req_signalling() );
+ execute( TC_assignment_sdcch_exhausted_req_signalling_tch_forbidden() );
+ execute( TC_assignment_sdcch_exhausted_req_voice_tch_forbidden() );
execute( TC_assignment_osmux() );
diff --git a/bsc/expected-results.xml b/bsc/expected-results.xml
index fd2d4d8..f9f022e 100644
--- a/bsc/expected-results.xml
+++ b/bsc/expected-results.xml
@@ -96,6 +96,9 @@
<testcase classname='BSC_Tests'
name='TC_assignment_codec_hr_exhausted_req_fr_hr' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_codec_req_hr_fr'
time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_codec_req_fr_hr'
time='MASKED'/>
+ <testcase classname='BSC_Tests'
name='TC_assignment_sdcch_exhausted_req_signalling' time='MASKED'/>
+ <testcase classname='BSC_Tests'
name='TC_assignment_sdcch_exhausted_req_signalling_tch_forbidden'
time='MASKED'/>
+ <testcase classname='BSC_Tests'
name='TC_assignment_sdcch_exhausted_req_voice_tch_forbidden' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_osmux' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_rll_est_ind_inact_lchan'
time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_rll_est_ind_inval_sapi1'
time='MASKED'/>
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I0c958de10a3643f8b94479d676dd1ac1b9140802
Gerrit-Change-Number: 25009
Gerrit-PatchSet: 3
Gerrit-Owner: pespin <[email protected]>
Gerrit-Reviewer: Hoernchen <[email protected]>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: daniel <[email protected]>
Gerrit-Reviewer: dexter <[email protected]>
Gerrit-Reviewer: neels <[email protected]>
Gerrit-Reviewer: osmith <[email protected]>
Gerrit-Reviewer: pespin <[email protected]>
Gerrit-MessageType: merged
