laforge has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/32555 )
Change subject: WIP: bsc: ASCI Assignment test (VBS/VGCS)
......................................................................
WIP: bsc: ASCI Assignment test (VBS/VGCS)
Change-Id: I9b824a08d3948dc01e4748d4a4d61b889d31e5ff
---
M bsc/BSC_Tests.ttcn
A bsc/BSC_Tests_ASCI.ttcn
2 files changed, 159 insertions(+), 1 deletion(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks
refs/changes/55/32555/1
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 878083e..4e72383 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -23,6 +23,7 @@
friend module BSC_Tests_VAMOS;
friend module BSC_Tests_CBSP;
friend module BSC_Tests_LCLS;
+friend module BSC_Tests_ASCI;
import from Misc_Helpers all;
import from General_Types all;
@@ -106,7 +107,7 @@
* BTS 2 has BSIC 12, TSC = (BSIC & 7) = 4.
* BTS 2 has BSIC 12, TSC = (BSIC & 7) = 4.
*/
-private const BtsParams c_BtsParams[NUM_BTS_CFG] := {
+friend const BtsParams c_BtsParams[NUM_BTS_CFG] := {
/* BTS0 */ { trx_num := 1, tsc := 2 },
/* BTS1 */ { trx_num := 1, tsc := 3 },
/* BTS2 */ { trx_num := 4, tsc := 4 },
diff --git a/bsc/BSC_Tests_ASCI.ttcn b/bsc/BSC_Tests_ASCI.ttcn
new file mode 100644
index 0000000..27538a7
--- /dev/null
+++ b/bsc/BSC_Tests_ASCI.ttcn
@@ -0,0 +1,148 @@
+module BSC_Tests_ASCI {
+
+/* Integration Tests for OsmoBSC
+ * (C) 2023 by Harald Welte <[email protected]>
+ * All rights reserved.
+ *
+ * Released under the terms of GNU General Public License, Version 2 or
+ * (at your option) any later version.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This test suite tests OsmoBSC while emulating both multiple BTS + MS as
+ * well as the MSC. See README for more details.
+ */
+
+import from General_Types all;
+import from Osmocom_Types all;
+import from GSM_Types all;
+import from Misc_Helpers all;
+
+import from BSC_Tests all;
+import from BSSAP_Types all;
+import from BSSAP_CodecPort all;
+import from BSSMAP_Templates all;
+import from RSL_Types all;
+import from RSL_Emulation all;
+import from MGCP_Emulation all;
+
+import from MobileL3_CommonIE_Types all;
+import from MobileL3_Types all;
+import from L3_Templates all;
+import from GSM_RR_Types all;
+
+import from MSC_ConnectionHandler all;
+import from RAN_Adapter all;
+import from RAN_Emulation all;
+
+
+function f_gen_asci_ass_req(integer bssap_idx := 0,
+ template (value) BSSMAP_IE_ChannelType ch_type :=
ts_BSSMAP_IE_ChannelType,
+ template (value) OCT1 ass_requirement := '00'O,
+ template (value) BSSMAP_IE_CellIdentifier cell_id
:= ts_CellID_LAC_CI(1, 0),
+ template (value) GroupCallRef group_call_ref :=
'2342'O,
+ charstring aoip_tla :="1.2.3.4")
+runs on MSC_ConnHdlr return template (value) PDU_BSSAP {
+ if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) {
+ var template (value) BSSMAP_IE_AoIP_TransportLayerAddress tla :=
+ f_ts_BSSMAP_IE_AoIP_TLA(aoip_tla, 2342);
+ return ts_BSSMAP_VGCS_VBS_AssignmentReq(ch_type,
ass_requirement, cell_id,
+ group_call_ref,
omit, tla);
+ } else {
+ var template (value) BSSMAP_IE_CircuitIdentityCode cic :=
ts_BSSMAP_IE_CIC(0,1);
+ return ts_BSSMAP_VGCS_VBS_AssignmentReq(ch_type,
ass_requirement, cell_id,
+ group_call_ref,
cic, omit);
+ }
+}
+
+
+private function f_tc_asci_assignment(charstring id) runs on MSC_ConnHdlr {
+ var PDU_BSSAP rx_bssap;
+ /* Hack: the proper way would be to wait for the BSSMAP VGCS Assignment
Result and extract the
+ * actual assigned chan_nr from it. But osmo-bsc starts acting on the
lchan even before we get a
+ * chance to evaluate the BSSMAP Handover Request ACK. So we need to
assume that osmo-bsc will
+ * activate TS 1 and already set up this lchan's RSL emulation
+ * before we get started. */
+ var RslChannelNr new_chan_nr := valueof(t_RslChanNr0(1,
RSL_CHAN_NR_Bm_ACCH));
+ f_rslem_register(0, new_chan_nr);
+ g_chan_nr := new_chan_nr;
+ var uint3_t expect_target_tsc := c_BtsParams[0].tsc;
+ f_sleep(1.0);
+
+ f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
+ f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
+ var default as_media := activate(as_Media());
+
+ /* TODO: Encryption */
+ var template (value) BSSMAP_IE_ChannelType ch_type :=
ts_BSSMAP_IE_ChannelType;
+ var template (value) BSSMAP_IE_CellIdentifier cell_id :=
ts_CellID_LAC_CI(1, 0);
+ var template (value) PDU_BSSAP ass_req := f_gen_asci_ass_req(ch_type :=
ch_type, cell_id := cell_id);
+ if (false) { /* VGCS/VBS ASS REQ in SCCP CR */
+ BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc,
g_pars.sccp_addr_msc, ass_req));
+ BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
+ } else { /* VGCS/VBS ASS REQ in SCCP DT1 */
+ BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc,
g_pars.sccp_addr_msc, omit));
+ BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
+ BSSAP.send(ass_req);
+ }
+
+ alt {
+ [] BSSAP.receive(tr_BSSMAP_VGCS_VBS_AssignmentRes(ch_type, cell_id)) ->
value rx_bssap {
+ if (g_pars.expect_ho_fail) {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
+ "Expected ASCI Assignment to
fail, but got success");
+ }
+ }
+ [] BSSAP.receive(tr_BSSMAP_VGCS_VBS_AssignmentFail) -> value rx_bssap {
+ if (not g_pars.expect_ho_fail) {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
+ "Expected ASCI Assignment to
succeed, but got fail");
+ }
+ /* TOOD: evaluate correct cause value. But osmo-bsc doesn't
seem to send meaningful causes * yet! */
+ BSSAP.receive(tr_BSSMAP_ClearRequest);
+ setverdict(pass);
+ return;
+ }
+ }
+
+ /* The RSL Emulation magically accepts the Chan Activ behind the
scenes. */
+
+ /* we're sure that the channel activation is done now, verify the
parameters in it */
+ var RSL_Message chan_act := f_rslem_get_last_act(RSL_PROC, 0,
g_chan_nr);
+ /* TODO: Encryption */
+ f_chan_act_verify_tsc(chan_act, expect_target_tsc);
+
+ if
(ispresent(rx_bssap.pdu.bssmap.vGCS_VBSAssignmentResult.speechCodec)) {
+ if (not g_pars.aoip) {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
+ "Expected no Speech Codec
(Chosen)");
+ }
+ } else {
+ if (g_pars.aoip) {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
+ "Expected Speech Codec
(Chosen)");
+ }
+ }
+
+}
+
+testcase TC_vbs_assignment() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+ var TestHdlrParams pars := f_gen_test_hdlr_pars();
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ vc_conn := f_start_handler(refers(f_tc_asci_assignment), pars);
+ vc_conn.done;
+
+ f_shutdown_helper();
+}
+
+control {
+ execute( TC_vbs_assignment() );
+
+}
+
+
+}
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I9b824a08d3948dc01e4748d4a4d61b889d31e5ff
Gerrit-Change-Number: 32555
Gerrit-PatchSet: 1
Gerrit-Owner: laforge <[email protected]>
Gerrit-MessageType: newchange
