pespin has uploaded this change for review.
5gc: Network Triggered Service Request
Change-Id: I42e422d104f254bc27d5f3bb3e8df0cba6380648
---
M 5gc/C5G_Tests.ttcn
M 5gc/ConnHdlr.ttcn
M library/GTPv1U_Emulation.ttcnpp
3 files changed, 93 insertions(+), 10 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/56/41756/1
diff --git a/5gc/C5G_Tests.ttcn b/5gc/C5G_Tests.ttcn
index 22c67e0..9e9d750 100644
--- a/5gc/C5G_Tests.ttcn
+++ b/5gc/C5G_Tests.ttcn
@@ -499,6 +499,46 @@
vc_conn.done;
}
+/* 3GPP TS 23.502 4.2.3.3 Network Triggered Service Request */
+private function f_TC_net_triggered_service_req() runs on ConnHdlr {
+ var PDU_SessionStatus pdu_session_status;
+
+ f_register();
+ f_pdu_sess_establish();
+ f_sleep(1.0);
+ f_ue_context_release();
+ f_sleep(1.0);
+ f_create_ngap_expect_proc(id_Paging, self);
+
+ /* NOTE: In theory we should generate DL-originated traffic here, but since
+ * UPF let our UL traffic pass (bug?), make use of it to generate some DL
+ * traffic (ping reply) triggering the Paging: */
+ var integer pid := f_ping4_async(g_pars.ue_pars.sess_pars.run_prog_pars.ping_hostname, interval := 1, count := 1);
+
+ NGAP.receive(mw_ngap_initMsg(mw_n2_Paging(?, ?)));
+ log("Rx Paging")
+
+ /* We emulate UE in CM-IDLE: */
+ pdu_session_status := f_PDU_SessionStatus();
+ f_service_request_cm_idle(pdu_sess_status := pdu_session_status);
+ /* open5gs GH#771: open5gs-amfd sends InitialContextSetupRequest instead of PDUSessionResourceSetupRequest */
+ as_ngap_handle_InitialCtxReq_withPDUSessionList();
+ NGAP.receive(cr_NG_SERVICE_ACCEPT(p_PDU_SessionStatus := cr_PDU_SessionStatus('00000010'B, '00000000'B)));
+ as_ngap_handle_configuration_update();
+
+ f_gtp1u_wait_term(pid, 0, 1.0);
+
+ f_deregister();
+}
+testcase TC_net_triggered_service_req() runs on MTC_CT {
+ f_init();
+ f_ngap_setup(0);
+
+ var ConnHdlrPars pars := f_init_pars(ue_idx := 0);
+ var ConnHdlr vc_conn;
+ vc_conn := f_start_handler_with_pars(refers(f_TC_net_triggered_service_req), pars);
+ vc_conn.done;
+}
control {
execute( TC_ng_setup() );
@@ -520,13 +560,14 @@
execute( TC_ue_service_request_cm_idle_inact_sess() );
execute( TC_ue_service_request_cm_idle_unknown_sess_active() );
execute( TC_ue_service_request_cm_connected() );
+
+ execute( TC_net_triggered_service_req() );
}
/* TODO:
* - 3GPP TS 23.502 4.2.2.2.3 Registration with AMF re-allocation: Not supported by open5gs (https://github.com/open5gs/open5gs/issues/4214).
* - 3GPP TS 23.502 4.2.2.2.4 Registration with Onboarding SNPN: Not supported by open5gs (https://github.com/open5gs/open5gs/issues/4215)
* - 3GPP TS 23.502 4.2.2.3.3 Network-initiated Deregistration: Not supported by open5gs (https://github.com/open5gs/open5gs/issues/4216)
- * - 3GPP TS 23.502 4.2.3.3 Network Triggered Service Request
* - 3GPP TS 23.502 4.2.4.3 UE Configuration Update procedure for transparent UE Policy delivery
* - 3GPP TS 23.502 4.2.5.2 UE Reachability Notification Request procedure
* - 3GPP TS 23.502 4.2.5.3 UE Activity Notification procedure
diff --git a/5gc/ConnHdlr.ttcn b/5gc/ConnHdlr.ttcn
index 1e7ed5a..aa932bf 100644
--- a/5gc/ConnHdlr.ttcn
+++ b/5gc/ConnHdlr.ttcn
@@ -293,7 +293,7 @@
}
}
-private altstep as_ngap_handle_configuration_update() runs on ConnHdlr {
+altstep as_ngap_handle_configuration_update() runs on ConnHdlr {
var NG_NAS_DL_Message_Type rx_nas;
[] NGAP.receive(cr_NG_CONFIGURATION_UPDATE_COMMAND) -> value rx_nas {
@@ -359,20 +359,31 @@
}
/* 3GPP TS 23.502 Figure 4.3.2.2.1-1 steps 12-14. */
-private altstep as_ngap_handle_InitialCtxReq_withPDUSessionList() runs on ConnHdlr {
+altstep as_ngap_handle_InitialCtxReq_withPDUSessionList(template (present) AMF_UE_NGAP_ID amf_id := ?) runs on ConnHdlr {
var NGAP_PDU rx_ngap;
var template (present) NGAP_PDU exp_ngap :=
- mw_ngap_initMsg(f_mw_n2_InitialContextSetupRequest(g_pars.ue_pars.amf_id,
- g_pars.ue_pars.ran_id,
- p_uEAggregateMaximumBitRate := ?,
- p_pDUSessionResourceSetupListCxtReq := ?,
- p_nextHopNH := ?,
- p_maskedIMEISV := ?));
+ mw_ngap_initMsg((f_mw_n2_InitialContextSetupRequest(amf_id,
+ g_pars.ue_pars.ran_id,
+ p_uEAggregateMaximumBitRate := ?,
+ p_pDUSessionResourceSetupListCxtReq := ?,
+ p_nextHopNH := ?,
+ p_maskedIMEISV := ?),
+ f_mw_n2_InitialContextSetupRequest(amf_id,
+ g_pars.ue_pars.ran_id,
+ p_uEAggregateMaximumBitRate := ?,
+ p_pDUSessionResourceSetupListCxtReq := ?,
+ p_nextHopNH := ?,
+ p_maskedIMEISV := ?,
+ p_nAS_PDU := ?)
+ ));
[] NGAP.receive(exp_ngap) -> value rx_ngap {
var InitialContextSetupRequest ctx_setup_req := rx_ngap.initiatingMessage.value_.initialContextSetupRequest;
var PDUSessionResourceSetupListCxtRes resources;
+ /* Update amf_id: */
+ g_pars.ue_pars.amf_id := ctx_setup_req.protocolIEs[0].value_.aMF_UE_NGAP_ID;
+
for (var integer i := 0; i < lengthof(ctx_setup_req.protocolIEs); i := i + 1) {
if (ctx_setup_req.protocolIEs[i].id != id_PDUSessionResourceSetupListCxtReq) {
continue;
@@ -463,7 +474,7 @@
p_RequestType := cs_NG_Request_TypeTV('001'B),
p_DNN := cs_DNN_TLV(f_enc_dns_hostname(g_pars.ue_pars.apn)));
NGAP.send(nas_ul_msg);
- as_ngap_handle_InitialCtxReq_withPDUSessionList();
+ as_ngap_handle_InitialCtxReq_withPDUSessionList(g_pars.ue_pars.amf_id);
/* PDU Session Establishment Accept: This DL NAS arrives contained in InitialCtxReq handled above: */
NGAP.receive(cr_NG_DL_NAS_TRANSPORT) -> value rx_nas;
@@ -966,4 +977,15 @@
redirect_output_path_prefix := f_run_prog_unique_log_path());
}
+function f_ping4_async(charstring host, integer interval := 1, integer count := 10) runs on ConnHdlr return integer
+{
+ /* command will be filled in by f_gtp1u_ping4() below: */
+ var UECUPS_StartProgram sprog := f_run_prog_init("");
+ var integer pid := f_gtp1u_ping4_async(sprog, host,
+ interval, count, g_pars.ue_pars.sess_pars.ue_ip,
+ redirect_output := true,
+ redirect_output_path_prefix := f_run_prog_unique_log_path());
+ return pid;
+}
+
}
diff --git a/library/GTPv1U_Emulation.ttcnpp b/library/GTPv1U_Emulation.ttcnpp
index aa97210..51fc5a1 100644
--- a/library/GTPv1U_Emulation.ttcnpp
+++ b/library/GTPv1U_Emulation.ttcnpp
@@ -454,6 +454,26 @@
f_gtp1u_wait_term(pid, exit_code, tout, port_idx);
}
+function f_gtp1u_ping4_async(UECUPS_StartProgram sprog,
+ charstring host, integer interval := 1, integer count := 10,
+ template (omit) charstring src_ip := omit,
+ boolean redirect_output := false,
+ charstring redirect_output_path_prefix := "gtp1u_run_prog",
+ integer port_idx := 0) runs on GTP1U_ConnHdlr return integer
+{
+ var charstring ping :="ping -c " & int2str(count) & " -i " & int2str(interval);
+ var integer pid;
+
+ if (isvalue(src_ip)) {
+ ping := ping & " -I " & valueof(src_ip);
+ }
+ ping := ping & " " & host;
+ sprog.command := ping;
+ pid := f_gtp1u_start_prog(sprog, redirect_output, redirect_output_path_prefix, port_idx);
+ return pid;
+
+}
+
/* execute ping command and wait for result. sprog.command is filled in based on params. */
function f_gtp1u_ping4(UECUPS_StartProgram sprog,
charstring host, integer interval := 1, integer count := 10,
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