epdg: Introduce test TC_s2b_CreateSession_rejected
Related: OS#6371
Change-Id: Ide1df9e359b12094f82e54a7824c83f515aedcc3
diff --git a/epdg/EPDG_Tests.ttcn b/epdg/EPDG_Tests.ttcn
index 8f97634..6263828 100644
--- a/epdg/EPDG_Tests.ttcn
+++ b/epdg/EPDG_Tests.ttcn
@@ -499,24 +499,29 @@
return ts_GTP2C_APCO(apco_req.instance, proto_list_resp);
}
+private function f_EPDG_ConnHdlr_parse_CreateSessionReq(PDU_GTPCv2 rx_msg) runs on EPDG_ConnHdlr {
+ var BearerContextIEs rx_bctx_ies;
+
+ /* Parse TEIC and Bearer EBI and TEID and store it in g_pars */
+ g_pars.teic_remote := rx_msg.gtpcv2_pdu.createSessionRequest.fullyQualifiedTEID[0].tEID_GRE_Key;
+ rx_bctx_ies := rx_msg.gtpcv2_pdu.createSessionRequest.bearerContextGrouped[0].bearerContextIEs;
+ g_pars.bearer.ebi := rx_bctx_ies.ePS_Bearer_ID.ePS_Bearer_ID_Value;
+ g_pars.bearer.teid_remote := rx_bctx_ies.fullyQualifiedTEID[0].tEID_GRE_Key;
+
+ /* allocate + register TEID-C on local side */
+ g_pars.teic_local := f_gtp2_allocate_teid();
+ g_pars.bearer.teid_local := g_pars.teic_local;
+}
+
/* ePDG Creates session at the PGW. PGW sends Diameter s6b AAR + AAA. */
private altstep as_GTP2C_CreateSession_success() runs on EPDG_ConnHdlr {
var PDU_GTPCv2 rx_msg;
- var BearerContextIEs rx_bctx_ies;
var template (value) FullyQualifiedTEID fteid_c_ie, fteid_u_ie;
var template (value) PDN_AddressAllocation paa;
var template (value) BearerContextIEs bctx_ies;
[] GTP2.receive(tr_GTP2C_CreateSessionReq(g_pars.imsi, apco := f_exp_tr_GTP2C_APCO_in_CreateSessionReq())) -> value rx_msg {
- /* Parse TEIC and Bearer EBI and TEID and store it in g_pars */
- g_pars.teic_remote := rx_msg.gtpcv2_pdu.createSessionRequest.fullyQualifiedTEID[0].tEID_GRE_Key;
- rx_bctx_ies := rx_msg.gtpcv2_pdu.createSessionRequest.bearerContextGrouped[0].bearerContextIEs;
- g_pars.bearer.ebi := rx_bctx_ies.ePS_Bearer_ID.ePS_Bearer_ID_Value;
- g_pars.bearer.teid_remote := rx_bctx_ies.fullyQualifiedTEID[0].tEID_GRE_Key;
-
- /* allocate + register TEID-C on local side */
- g_pars.teic_local := f_gtp2_allocate_teid();
- g_pars.bearer.teid_local := g_pars.teic_local;
+ f_EPDG_ConnHdlr_parse_CreateSessionReq(rx_msg);
/* Upon rx of CreateSession, emulate PGW asking the AAA server. */
f_S6b_AA_success();
@@ -531,6 +536,7 @@
qos := ts_GTP2C_BearerQos('09'O, 0,0,0,0),
charging_id := ts_GTP2C_ChargingID(g_pars.teic_local));
GTP2.send(ts_GTP2C_CreateSessionResp(g_pars.teic_remote, rx_msg.sequenceNumber,
+ Request_accepted,
{ fteid_c_ie }, paa,
{ ts_GTP2C_BcGrouped(bctx_ies) },
f_GTPv2C_gen_APCO_response(rx_msg.gtpcv2_pdu.createSessionRequest.aPCO) ));
@@ -541,6 +547,34 @@
}
}
+/* ePDG Creates session at the PGW. PGW sends Diameter s6b AAR + AAA. */
+private altstep as_GTP2C_CreateSession_error(GTP2C_Cause resp_cause, boolean do_s6b_aar := false) runs on EPDG_ConnHdlr {
+ var PDU_GTPCv2 rx_msg;
+ var template (value) FullyQualifiedTEID fteid_c_ie, fteid_u_ie;
+ var template (value) PDN_AddressAllocation paa;
+ var template (value) BearerContextIEs bctx_ies;
+
+ [] GTP2.receive(tr_GTP2C_CreateSessionReq(g_pars.imsi, apco := f_exp_tr_GTP2C_APCO_in_CreateSessionReq())) -> value rx_msg {
+ f_EPDG_ConnHdlr_parse_CreateSessionReq(rx_msg);
+
+ /* Upon rx of CreateSession, emulate PGW asking the AAA server. */
+ if (do_s6b_aar) {
+ f_S6b_AA_success();
+ }
+
+ fteid_c_ie := ts_GTP2C_FTEID(FTEID_IF_S2b_PGW_GTPC, g_pars.teic_local, 1,
+ f_inet_addr(mp_s2b_local_ip), omit);
+ fteid_u_ie := ts_GTP2C_FTEID(FTEID_IF_S2bU_PGW_GTPU, g_pars.bearer.teid_local, 4,
+ f_inet_addr(mp_s2b_local_ip), omit);
+ GTP2.send(ts_GTP2C_CreateSessionResp(g_pars.teic_remote, rx_msg.sequenceNumber,
+ resp_cause));
+ setverdict(pass);
+ }
+ [] GTP2.receive(PDU_GTPCv2:?) -> value rx_msg {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Unexpected GTP2C msg rx: ", rx_msg));
+ }
+}
+
/* ePDG Deletes session at the PGW. PGW sends Diameter s6b AAR + AAA. */
private altstep as_GTP2C_DeleteSession_success() runs on EPDG_ConnHdlr {
var PDU_GTPCv2 rx_msg;
@@ -693,6 +727,21 @@
setverdict(pass);
}
+/* GSUP TunnelEPDG Tunnel Req + Resp, triggers S2b CreateSession Req + Response (rejected). */
+private function f_GSUP_EPDGTunnel_error() runs on EPDG_ConnHdlr {
+ var GSUP_PDU rx_gsup;
+ var template (value) PCO_DATA pco := ts_PCO({ ts_PCO_P_DNS_IPv4, ts_PCO_P_PCSCF_IPv4 });
+ GSUP.send(ts_GSUP_EPDGTunnel_REQ(g_pars.imsi, pco));
+ as_GTP2C_CreateSession_error(APN_access_denied__no_subscription);
+ alt {
+ [] GSUP.receive(tr_GSUP_EPDGTunnel_ERR(g_pars.imsi));
+ [] GSUP.receive(GSUP_PDU:?) -> value rx_gsup {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Unexpected GSUP msg rx: ", rx_gsup));
+ }
+ }
+ setverdict(pass);
+}
+
/* GSUP Purge MS Req + Resp, triggers S2b DeleteSession Req + Response. */
private function f_GSUP_PurgeMS_success() runs on EPDG_ConnHdlr {
var GSUP_PDU rx_gsup;
@@ -774,6 +823,20 @@
setverdict(pass);
}
+private function f_TC_s2b_CreateSession_rejected(charstring id) runs on EPDG_ConnHdlr {
+ f_GSUP_AI_success();
+ f_GSUP_LU_success();
+ f_GSUP_EPDGTunnel_error();
+}
+testcase TC_s2b_CreateSession_rejected() runs on MTC_CT {
+ var EPDG_ConnHdlrPars pars := f_init_pars();
+ var EPDG_ConnHdlr vc_conn;
+ f_init();
+ vc_conn := f_start_handler(refers(f_TC_s2b_CreateSession_rejected), pars);
+ vc_conn.done;
+ setverdict(pass);
+}
+
private function f_TC_concurrent_ues(charstring id) runs on EPDG_ConnHdlr {
COORD.send(COORD_CMD_READY);
COORD.receive(COORD_CMD_START);
@@ -830,6 +893,7 @@
execute ( TC_authinfo_normal() );
execute ( TC_ho_lte_to_wifi() );
execute ( TC_ho_wifi_to_lte() );
+ execute ( TC_s2b_CreateSession_rejected() );
execute ( TC_concurrent_ues2() );
execute ( TC_concurrent_ues100() );
}