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laforge gerrit-no-reply at lists.osmocom.orglaforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/22257 )
Change subject: gbproxy: Add test cases for uplink STATUS handling
......................................................................
gbproxy: Add test cases for uplink STATUS handling
We expect the uplink BSSGP status to be routed based in the
inner/contained downlink PDU.
Change-Id: If2ddd158346a3da340f1c673354196f3872c4f67
Related: OS#4951
---
M gbproxy/GBProxy_Tests.ttcn
1 file changed, 240 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/57/22257/1
diff --git a/gbproxy/GBProxy_Tests.ttcn b/gbproxy/GBProxy_Tests.ttcn
index b7c01ac..b15b28b 100644
--- a/gbproxy/GBProxy_Tests.ttcn
+++ b/gbproxy/GBProxy_Tests.ttcn
@@ -359,6 +359,19 @@
float t_guard
};
+private function get_bvc_idx_for_bvci(GbInstance gbi, BssgpBvci bvci) return integer
+{
+ var integer i;
+
+ for (i := 0; i < lengthof(gbi.cfg.bvc); i := i + 1) {
+ if (gbi.cfg.bvc[i].bvci == bvci) {
+ return i;
+ }
+ }
+ setverdict(fail, "Could not find BVC Index for BVCI ", bvci);
+ return -1;
+}
+
private function f_cellid_to_RAI(in BssgpCellId cell_id) return RoutingAreaIdentificationV {
/* mcc_mnc is encoded as of 24.008 10.5.5.15 */
var BcdMccMnc mcc_mnc := cell_id.ra_id.lai.mcc_mnc;
@@ -864,7 +877,9 @@
type component GlobalTest_CT extends test_CT {
port BSSGP_PT G_PCU[NUM_PCU];
+ var integer g_pcu_idx[NUM_PCU]; /* BVC index currently connected to G_PCU */
port BSSGP_PT G_SGSN[NUM_SGSN];
+ var integer g_sgsn_idx[NUM_SGSN]; /* BVC index currently connected to G_SGSN */
port BSSGP_PT RIM_PCU[NUM_PCU];
port BSSGP_PT RIM_SGSN[NUM_SGSN];
};
@@ -886,16 +901,41 @@
private function f_global_init_ptp() runs on GlobalTest_CT {
var integer i;
for (i := 0; i < lengthof(g_sgsn); i := i+1) {
+ log("Connecting G_SGSN[", i, "] to BVCI=", g_sgsn[i].cfg.bvc[0].bvci);
connect(self:G_SGSN[i], g_sgsn[i].vc_BSSGP_BVC[0]:GLOBAL);
+ g_sgsn_idx[i] := 0;
}
for (i := 0; i < lengthof(g_pcu); i := i+1) {
+ log("Connecting G_PCU[", i, "] to BVCI=", g_pcu[i].cfg.bvc[0].bvci);
connect(self:G_PCU[i], g_pcu[i].vc_BSSGP_BVC[0]:GLOBAL);
+ g_pcu_idx[i] := 0;
}
}
+/* (re)connect G_SGSN[sgsn_idx] to a specific PTP BVCI */
+private function f_global_ptp_connect_sgsn_bvci(integer sgsn_idx, BssgpBvci bvci) runs on GlobalTest_CT
+{
+ var integer sgsn_bvc_idx := get_bvc_idx_for_bvci(g_sgsn[sgsn_idx], bvci);
+ var integer old_sgsn_bvc_idx := g_sgsn_idx[sgsn_idx];
+ disconnect(self:G_SGSN[sgsn_idx], g_sgsn[sgsn_idx].vc_BSSGP_BVC[old_sgsn_bvc_idx]:GLOBAL);
+ connect(self:G_SGSN[sgsn_idx], g_sgsn[sgsn_idx].vc_BSSGP_BVC[sgsn_bvc_idx]:GLOBAL);
+ g_sgsn_idx[sgsn_idx] := sgsn_bvc_idx;
+}
+
+/* (re)connect G_PCU[pcu_idx] to a specific PTP BVCI */
+private function f_global_ptp_connect_pcu_bvci(integer pcu_idx, BssgpBvci bvci) runs on GlobalTest_CT
+{
+ var integer pcu_bvc_idx := get_bvc_idx_for_bvci(g_pcu[pcu_idx], bvci);
+ var integer old_pcu_bvc_idx := g_pcu_idx[pcu_idx];
+ disconnect(self:G_PCU[pcu_idx], g_pcu[pcu_idx].vc_BSSGP_BVC[old_pcu_bvc_idx]:GLOBAL);
+ connect(self:G_PCU[pcu_idx], g_pcu[pcu_idx].vc_BSSGP_BVC[pcu_bvc_idx]:GLOBAL);
+ g_pcu_idx[pcu_idx] := pcu_bvc_idx;
+}
+
/* Send 'tx' on PTP-BVCI from PCU; expect 'rx' on SGSN */
friend function f_global_pcu2sgsn(template (value) PDU_BSSGP tx, template (present) PDU_BSSGP exp_rx,
integer pcu_idx := 0, integer sgsn_idx := 0) runs on GlobalTest_CT {
+ var integer rx_idx;
var PDU_BSSGP rx;
timer T := 1.0;
@@ -905,6 +945,9 @@
[] G_SGSN[sgsn_idx].receive(exp_rx) {
setverdict(pass);
}
+ [] any from G_SGSN.receive(exp_rx) -> @index value rx_idx {
+ setverdict(fail, "BSSGP arrived on wrong SGSN[", rx_idx, "] instead of SGSN[", sgsn_idx, "]");
+ }
[] G_SGSN[sgsn_idx].receive(PDU_BSSGP:?) -> value rx {
setverdict(fail, "Unexpected BSSGP on SGSN side: ", rx);
mtc.stop;
@@ -919,6 +962,7 @@
/* Send 'tx' on PTP-BVCI from SGSN; expect 'rx' on PCU */
friend function f_global_sgsn2pcu(template (value) PDU_BSSGP tx, template (present) PDU_BSSGP exp_rx,
integer sgsn_idx := 0, integer pcu_idx := 0) runs on GlobalTest_CT {
+ var integer rx_idx;
var PDU_BSSGP rx;
timer T := 1.0;
@@ -928,6 +972,9 @@
[] G_PCU[pcu_idx].receive(exp_rx) {
setverdict(pass);
}
+ [] any from G_PCU.receive(exp_rx) -> @index value rx_idx {
+ setverdict(fail, "BSSGP arrived on wrong PCU[", rx_idx, "] instead of PCU[", pcu_idx, "]");
+ }
[] G_PCU[pcu_idx].receive(PDU_BSSGP:?) -> value rx {
setverdict(fail, "Unexpected BSSGP on PCU side: ", rx);
mtc.stop;
@@ -2978,6 +3025,189 @@
f_cleanup();
}
+/***********************************************************************
+ * STATUS handling
+ ***********************************************************************/
+
+/* BSSGP STATUS PDU must be routed based on inner "PDU In Error" message */
+
+/* generate a TMSI with NRI matching sgsn_idx + nri_idx */
+private function f_gen_tmsi_for_sgsn_nri(integer sgsn_idx, integer nri_idx) runs on test_CT return OCT4
+{
+ var integer nri := mp_sgsn_nri[sgsn_idx][nri_idx];
+ return f_gen_tmsi(0, nri_v := nri, nri_bitlen := mp_nri_bitlength);
+}
+
+/* generate a TLLI with NRI matching sgsn_idx + nri_idx */
+private function f_gen_tlli_for_sgsn_nri(integer sgsn_idx, integer nri_idx) runs on test_CT return OCT4
+{
+ var OCT4 p_tmsi := f_gen_tmsi_for_sgsn_nri(sgsn_idx, nri_idx);
+ return f_gprs_tlli_from_tmsi(p_tmsi, TLLI_LOCAL);
+}
+
+/* STATUS in uplink direction; expect routing by its NRI */
+private function f_TC_status_ul(integer pcu_idx, integer sgsn_idx, PDU_BSSGP inner)
+runs on GlobalTest_CT
+{
+ var template (value) PDU_BSSGP tx := ts_BSSGP_STATUS(omit, BSSGP_CAUSE_EQUIMENT_FAILURE, inner);
+ var template (present) PDU_BSSGP exp_rx :=
+ tr_BSSGP_STATUS(omit, BSSGP_CAUSE_EQUIMENT_FAILURE,
+ tx.pDU_BSSGP_STATUS.pDU_in_Error.erroneous_BSSGP_PDU);
+
+ f_global_pcu2sgsn(tx, exp_rx, pcu_idx, sgsn_idx);
+}
+
+/* STATUS in uplink direction; expect routing by its NRI */
+private function f_TC_status_dl(integer sgsn_idx, integer pcu_idx, PDU_BSSGP inner)
+runs on GlobalTest_CT
+{
+ var template (value) PDU_BSSGP tx := ts_BSSGP_STATUS(omit, BSSGP_CAUSE_EQUIMENT_FAILURE, inner);
+ var template (present) PDU_BSSGP exp_rx :=
+ tr_BSSGP_STATUS(omit, BSSGP_CAUSE_EQUIMENT_FAILURE,
+ tx.pDU_BSSGP_STATUS.pDU_in_Error.erroneous_BSSGP_PDU);
+
+ f_global_sgsn2pcu(tx, exp_rx, sgsn_idx, pcu_idx);
+}
+
+/* STATUS in uplink direction on SIG-BVC containing a TLLI; expect routing by its NRI */
+testcase TC_status_sig_ul_tlli() runs on GlobalTest_CT
+{
+ var integer sgsn_idx, nri_idx;
+
+ f_init();
+ f_global_init();
+
+ for (sgsn_idx := 0; sgsn_idx < NUM_SGSN; sgsn_idx := sgsn_idx + 1) {
+ for (nri_idx := 0; nri_idx < lengthof(mp_sgsn_nri[sgsn_idx]); nri_idx := nri_idx + 1) {
+ /* some downlink PDU occurring on SIG-BVC with a TLLI */
+ var OCT4 tlli := f_gen_tlli_for_sgsn_nri(sgsn_idx, nri_idx);
+ var PDU_BSSGP inner := valueof(ts_BSSGP_FLUSH_LL(tlli, 2342));
+
+ f_TC_status_ul(0, sgsn_idx, inner);
+ }
+ }
+
+ f_cleanup();
+}
+
+/* STATUS in uplink direction on SIG-BVC containing a TMSI; expect routing by its NRI */
+testcase TC_status_sig_ul_tmsi() runs on GlobalTest_CT
+{
+ var integer sgsn_idx, nri_idx;
+
+ f_init();
+ f_global_init();
+
+ for (sgsn_idx := 0; sgsn_idx < NUM_SGSN; sgsn_idx := sgsn_idx + 1) {
+ for (nri_idx := 0; nri_idx < lengthof(mp_sgsn_nri[sgsn_idx]); nri_idx := nri_idx + 1) {
+ /* some downlink PDU occurring on SIG-BVC with a TMSI */
+ const hexstring imsi := '001010123456789'H
+ var OCT4 tmsi := f_gen_tmsi_for_sgsn_nri(sgsn_idx, nri_idx);
+ var BssgpBvci bvci := g_pcu[0].cfg.bvc[0].bvci;
+ var PDU_BSSGP inner := valueof(ts_BSSGP_CS_PAGING_PTMSI(bvci, imsi, oct2int(tmsi)));
+ f_TC_status_ul(0, sgsn_idx, inner);
+ }
+ }
+
+ f_cleanup();
+}
+
+
+/* STATUS in uplink direction on PTP-BVC containing a TLLI; expect routing by its NRI */
+testcase TC_status_ptp_ul_tlli() runs on GlobalTest_CT
+{
+ var integer sgsn_idx, nri_idx;
+
+ f_init();
+ f_global_init_ptp();
+
+ for (sgsn_idx := 0; sgsn_idx < NUM_SGSN; sgsn_idx := sgsn_idx + 1) {
+ for (nri_idx := 0; nri_idx < lengthof(mp_sgsn_nri[sgsn_idx]); nri_idx := nri_idx + 1) {
+ /* some downlink PDU occurring on PTP-BVC with a TLLI */
+ var OCT4 tlli := f_gen_tlli_for_sgsn_nri(sgsn_idx, nri_idx);
+ var PDU_BSSGP inner := valueof(ts_BSSGP_DL_UD(tlli, '2342'O));
+
+ f_TC_status_ul(0, sgsn_idx, inner);
+ }
+ }
+
+ f_cleanup();
+}
+
+/* STATUS in uplink direction on PTP-BVC containing a TMSI; expect routing by its NRI */
+testcase TC_status_ptp_ul_tmsi() runs on GlobalTest_CT
+{
+ var integer sgsn_idx, nri_idx;
+
+ f_init();
+ f_global_init_ptp();
+
+ for (sgsn_idx := 0; sgsn_idx < NUM_SGSN; sgsn_idx := sgsn_idx + 1) {
+ for (nri_idx := 0; nri_idx < lengthof(mp_sgsn_nri[sgsn_idx]); nri_idx := nri_idx + 1) {
+ /* some downlink PDU occurring on PTP-BVC with a TMSI */
+ const hexstring imsi := '001010123456789'H
+ var OCT4 tmsi := f_gen_tmsi_for_sgsn_nri(sgsn_idx, nri_idx);
+ var BssgpBvci bvci := g_pcu[0].cfg.bvc[0].bvci;
+ var PDU_BSSGP inner := valueof(ts_BSSGP_CS_PAGING_PTMSI(bvci, imsi, oct2int(tmsi)));
+ f_TC_status_ul(0, sgsn_idx, inner);
+ }
+ }
+
+ f_cleanup();
+}
+
+/* STATUS in downlink direction in SIG-BVC containing a BVCI; expect routing by it */
+testcase TC_status_sig_dl_bvci() runs on GlobalTest_CT
+{
+ var integer sgsn_idx, pcu_idx, bvc_idx;
+
+ f_init();
+ f_global_init();
+
+ /* test each BVC in each PCU from each SGSN */
+ for (pcu_idx := 0; pcu_idx < lengthof(g_pcu); pcu_idx := pcu_idx + 1) {
+ for (bvc_idx := 0; bvc_idx < lengthof(g_pcu[pcu_idx].cfg.bvc); bvc_idx := bvc_idx + 1) {
+ for (sgsn_idx := 0; sgsn_idx < NUM_SGSN; sgsn_idx := sgsn_idx + 1) {
+ /* some uplink PDU occurring on SIG-BVC containing a BVCI */
+ var BssgpBvci bvci := g_pcu[pcu_idx].cfg.bvc[bvc_idx].bvci;
+ var PDU_BSSGP inner := valueof(ts_BSSGP_LLC_DISCARDED('12345678'O, 1, bvci, 23));
+ f_TC_status_dl(sgsn_idx, pcu_idx, inner);
+ }
+ }
+ }
+
+ f_cleanup();
+}
+
+/* STATUS in downlink direction in PTP-BVC; expect routing by BVCI */
+testcase TC_status_ptp_dl_bvci() runs on GlobalTest_CT
+{
+ var integer sgsn_idx, pcu_idx, bvc_idx;
+
+ f_init();
+ f_global_init_ptp();
+
+ /* test each BVC in each PCU from each SGSN */
+ for (pcu_idx := 0; pcu_idx < lengthof(g_pcu); pcu_idx := pcu_idx + 1) {
+ for (bvc_idx := 0; bvc_idx < lengthof(g_pcu[pcu_idx].cfg.bvc); bvc_idx := bvc_idx + 1) {
+ var BssgpBvci bvci := g_pcu[pcu_idx].cfg.bvc[bvc_idx].bvci;
+ f_global_ptp_connect_pcu_bvci(pcu_idx, bvci);
+ for (sgsn_idx := 0; sgsn_idx < NUM_SGSN; sgsn_idx := sgsn_idx + 1) {
+ f_global_ptp_connect_sgsn_bvci(sgsn_idx, bvci);
+
+ /* some uplink PDU occurring on PTP-BVC */
+ var BssgpCellId cell_id := g_pcu[pcu_idx].cfg.bvc[bvc_idx].cell_id;
+ var PDU_BSSGP inner := valueof(ts_BSSGP_UL_UD('12345678'O, cell_id, '4223'O));
+ f_TC_status_dl(sgsn_idx, pcu_idx, inner);
+ }
+ }
+ }
+
+ f_cleanup();
+}
+
+/* TODO: test case for DL-STATUS(SUSPEND/RESUME) containing RA-ID; expect routing by RA-ID */
+/* TODO: test case for UL-STATUS(PAGING-by-IMSI) after sending an actual PAGIN-by-IMSI in DL first */
control {
execute( TC_BVC_bringup() );
@@ -3061,6 +3291,16 @@
execute( TC_fc_bvc() );
execute( TC_fc_ms() );
execute( TC_ms_reg_enq() );
+
+ /* Uplink STATUS */
+ execute( TC_status_sig_ul_tlli() );
+ execute( TC_status_sig_ul_tmsi() );
+ execute( TC_status_ptp_ul_tlli() );
+ execute( TC_status_ptp_ul_tmsi() );
+
+ /* Downlink STATUS */
+ execute( TC_status_sig_dl_bvci() );
+ execute( TC_status_ptp_dl_bvci() );
}
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: If2ddd158346a3da340f1c673354196f3872c4f67
Gerrit-Change-Number: 22257
Gerrit-PatchSet: 1
Gerrit-Owner: laforge <laforge at osmocom.org>
Gerrit-MessageType: newchange
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