9 Feb
2022
9 Feb
'22
5:21 p.m.
daniel has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/27111 )
Change subject: hnbgw: Add tests for Iuh->Iu disconnect
......................................................................
hnbgw: Add tests for Iuh->Iu disconnect
Change-Id: I8c1858382483af94542af9eb6977d360f26fdaef
---
M hnbgw/HNBGW_Tests.ttcn
M library/RUA_Emulation.ttcn
2 files changed, 108 insertions(+), 2 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/11/27111/1
diff --git a/hnbgw/HNBGW_Tests.ttcn b/hnbgw/HNBGW_Tests.ttcn
index 59cda1a..6b87f72 100644
--- a/hnbgw/HNBGW_Tests.ttcn
+++ b/hnbgw/HNBGW_Tests.ttcn
@@ -461,6 +461,44 @@
return rx;
}
+function f_iuh2iu_disconnect(template (present) RANAP_PDU tx, RUA_IEs.Cause cause,
+ template RANAP_PDU exp_rx := omit)
+runs on ConnHdlr return RANAP_PDU {
+ var RANAP_PDU rx
+ timer T := 5.0;
+
+ if (istemplatekind(exp_rx, "omit")) {
+ exp_rx := tx;
+ }
+
+ /* send it via Iuh (creating a RUA connection) */
+ RUA.send(RUA_Disc_Req:{tx, cause});
+
+ /* expect to receive it on the Iu side */
+ T.start;
+ alt {
+ [] BSSAP.receive(exp_rx) -> value rx {
+ }
+ [] T.timeout {
+ setverdict(fail, "Timeout waiting for Iu ", exp_rx);
+ return rx;
+ }
+ }
+
+ /* expect disconnect on the Iu side */
+ alt {
+ [] BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_DISC_IND) {
+ setverdict(pass);
+ }
+ [] T.timeout {
+ setverdict(fail, "Timeout waiting for Iu disconnect");
+ return rx;
+ }
+
+ }
+ return rx;
+}
+
/* build a RANAP InitialUE based on the TestHdlrParams */
friend function f_build_initial_ue(TestHdlrParams pars) return RANAP_PDU {
var LAI lai := {
@@ -624,6 +662,40 @@
}
+private function f_tc_ranap_mo_disconnect(charstring id, TestHdlrParams pars) runs on
ConnHdlr {
+ f_init_handler(pars);
+
+ /* HNB -> MSC: InitialUE */
+ f_iuh2iu_connect(f_build_initial_ue(g_pars));
+
+ /* MSC <- HNB: DirectTransfer */
+ f_iu2iuh(ts_RANAP_DirectTransfer(f_rnd_octstring(10)));
+ /* MSC -> HNB: DirectTransfer */
+ f_iuh2iu(ts_RANAP_DirectTransfer(f_rnd_octstring(10)));
+
+ /* MSC <- HNB: RUA disconnect */
+ f_iuh2iu_disconnect(ts_RANAP_IuReleaseComplete,
RUA_IEs.Cause:{misc:=processing_overload});
+}
+testcase TC_ranap_cs_mo_disconnect() runs on test_CT {
+ var ConnHdlr vc_conn;
+
+ f_init();
+ f_start_hnbs();
+
+ vc_conn := f_start_handler_with_pars(refers(f_tc_ranap_mo_disconnect), t_pars(5));
+ vc_conn.done;
+}
+testcase TC_ranap_ps_mo_disconnect() runs on test_CT {
+ var ConnHdlr vc_conn;
+
+ f_init();
+ f_start_hnbs();
+
+ vc_conn := f_start_handler_with_pars(refers(f_tc_ranap_mo_disconnect), t_pars(6));
+ vc_conn.done;
+}
+
+
control {
@@ -632,6 +704,8 @@
execute(TC_ranap_ps_initial_ue());
execute(TC_ranap_cs_bidir());
execute(TC_ranap_ps_bidir());
+ execute(TC_ranap_cs_mo_disconnect());
+ execute(TC_ranap_ps_mo_disconnect());
}
}
diff --git a/library/RUA_Emulation.ttcn b/library/RUA_Emulation.ttcn
index 23b4a7a..98e5a1f 100644
--- a/library/RUA_Emulation.ttcn
+++ b/library/RUA_Emulation.ttcn
@@ -53,11 +53,12 @@
port RUA_Conn_PT RUA;
}
-
/* port between individual per-connection components and this dispatcher */
type port RUA_Conn_PT message {
inout RANAP_PDU,
- RUA_Conn_Req;
+ RUA_Conn_Req,
+ RUA_Disc_Req,
+ RUA_Disc_Ind;
} with { extension "internal" };
type record RUA_Conn_Req {
@@ -65,6 +66,15 @@
RANAP_PDU ranap
};
+type record RUA_Disc_Req {
+ RANAP_PDU ranap,
+ RUA_IEs.Cause cause
+};
+
+type record RUA_Disc_Ind {
+ RUA_IEs.Cause cause
+};
+
type bitstring ContextId length(24); // with { variant "FIELDLENGTH(24)" };
/* represents a single RANAP connection over RUA */
@@ -257,6 +267,8 @@
var RUA_IEs.CN_DomainIndicator domain_ind;
var RUA_ConnHdlr vc_conn;
var RUA_Conn_Req creq;
+ var RUA_Disc_Req dreq;
+ var RUA_IEs.Cause cause;
/* RUA -> Client: UNIT-DATA (connectionless RUA) from CN */
[] RUA.receive(tr_RUA_ConnectionlessTransfer) -> value rua {
@@ -277,6 +289,7 @@
vc_conn := g_rua_ops.create_cb.apply(context_id, domain_ind, g_rua_id);
/* store mapping between client components and RUA contextId */
f_conn_table_add(vc_conn, domain_ind, context_id);
+ /* TODO: notify user about incoming connection? */
/* handle user payload */
f_handle_userData_RANAP(vc_conn, ranap);
}
@@ -291,6 +304,15 @@
/* RUA -> Client: disconnect of an existing connection */
[] RUA.receive(tr_RUA_Disconnect) -> value rua {
+ cause := rua.initiatingMessage.value_.disconnect_.protocolIEs[2].value_.cause;
+ context_id :=
rua.initiatingMessage.value_.disconnect_.protocolIEs[1].value_.context_ID;
+ vc_conn := f_comp_by_context_id(context_id);
+ /* send contained RANAP message to user */
+ ranap_enc :=
rua.initiatingMessage.value_.disconnect_.protocolIEs[3].value_.rANAP_Message;
+ f_handle_userData_RANAP(vc_conn, dec_RANAP_PDU(ranap_enc));
+ /* notify user of disconnect */
+ CLIENT.send(RUA_Disc_Ind:{cause});
+ f_conn_table_del(context_id);
}
/* RANAP from client through an existing RANAP connection */
@@ -301,6 +323,16 @@
RUA.send(ts_RUA_DirectTransfer(domain_ind, context_id, enc_RANAP_PDU(ranap)));
}
+ /* Disconnect request from client */
+ [] CLIENT.receive(RUA_Disc_Req:?) -> value dreq sender vc_conn {
+ var octetstring enc_ranap := enc_RANAP_PDU(dreq.ranap);
+ var integer idx := f_idx_by_comp(vc_conn);
+ context_id := int2bit(ConnectionTable[idx].context_id, 24);
+ domain_ind := ConnectionTable[idx].domain;
+ RUA.send(ts_RUA_Disconnect(domain_ind, context_id, dreq.cause, enc_ranap));
+ f_conn_table_del(context_id);
+ }
+
/* RANAP from client, for a new RANAP connection */
[] CLIENT.receive(RUA_Conn_Req:?) -> value creq sender vc_conn {
var octetstring enc_ranap := enc_RANAP_PDU(creq.ranap);
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I8c1858382483af94542af9eb6977d360f26fdaef
Gerrit-Change-Number: 27111
Gerrit-PatchSet: 1
Gerrit-Owner: daniel <dwillmann(a)sysmocom.de>
Gerrit-CC: laforge <laforge(a)osmocom.org>
Gerrit-MessageType: newchange