pespin has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/35167?usp=email )
Change subject: hnbgw: Introduce test TC_rab_assign_mgw_iuup_addr_chg
......................................................................
hnbgw: Introduce test TC_rab_assign_mgw_iuup_addr_chg
Change-Id: Ibfc37118ed3a67e4ca3f417273bedba127be7639
Related: SYS#6657
Related: OS#6127
---
M hnbgw/HNBGW_Tests.ttcn
M hnbgw/expected-results.xml
2 files changed, 50 insertions(+), 1 deletion(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks
refs/changes/67/35167/1
diff --git a/hnbgw/HNBGW_Tests.ttcn b/hnbgw/HNBGW_Tests.ttcn
index d4073d1..15fc85f 100644
--- a/hnbgw/HNBGW_Tests.ttcn
+++ b/hnbgw/HNBGW_Tests.ttcn
@@ -606,7 +606,6 @@
/* We cannot use vc_conn.start(f_init_handler(fn, id, pars)); as we
cannot have
* a stand-alone 'derefers()' call, see
https://www.eclipse.org/forums/index.php/t/1091364/ */
pars.hnb := g_hnb_cfg[pars.hnb_idx];
- pars.mgcp_pars := valueof(t_MgcpParams);
vc_conn.start(derefers(fn)(id, pars));
}
@@ -993,6 +992,7 @@
cn_idx := f_cn_idx(ps_domain, cn_nr),
imsi := f_gen_imsi(imsi_suffix),
ps_domain := ps_domain,
+ mgcp_pars := t_MgcpParams,
hnb := omit, /* filled in later */
expect_separate_sccp_cr := expect_separate_sccp_cr,
tx_sccp_cr_data_len := tx_sccp_cr_data_len,
@@ -1276,9 +1276,13 @@
/* Expect MDCX with IP/port from RAB Assignment Response */
[] MGCP.receive(tr_MDCX(tr_SDP(pars.hnb_rtp_ip, pars.hnb_rtp_port))) ->
value mgcp_cmd {
var HostName mgw_rtp_ip;
+ var boolean exp_rua_rab_reass := false;
log("MDCX1", mgcp_cmd);
if (ispresent(pars.mgw_conn_ran.mgw_rtp_ip_mdcx)) {
mgw_rtp_ip := pars.mgw_conn_ran.mgw_rtp_ip_mdcx;
+ if (pars.mgw_conn_ran.mgw_rtp_ip !=
pars.mgw_conn_ran.mgw_rtp_ip_mdcx) {
+ exp_rua_rab_reass := true;
+ }
} else {
mgw_rtp_ip := pars.mgw_conn_ran.mgw_rtp_ip;
}
@@ -1288,6 +1292,21 @@
{ int2str(pars.rtp_payload_type) }, {
valueof(ts_SDP_rtpmap(pars.rtp_payload_type, pars.rtp_sdp_format)),
valueof(ts_SDP_ptime(20)) } ));
var template MgcpResponse mgcp_rsp :=
ts_MDCX_ACK(mgcp_cmd.line.trans_id, pars.mgw_conn_ran.mgcp_connection_id, sdp);
MGCP.send(valueof(mgcp_rsp));
+
+ /* If IP address changed, we expect HNBGW to Modify the RAB
through RAB-Ass-Req: */
+ if (exp_rua_rab_reass) {
+ var template RAB_SetupOrModifyList rab_sml;
+ /* Expect RAB Assignment Request with IP/port from MDCX
ACK via Iuh */
+ rab_sml := ts_RAB_SML(t_RAB_id(23),
f_ts_RAB_TLA(pars.mgw_conn_ran.mgw_rtp_ip_mdcx),
t_RAB_binding_port(pars.mgw_conn_ran.mgw_rtp_port));
+ tx := valueof(ts_RANAP_RabAssReq(rab_sml));
+
+ f_rua_expect(tx);
+ /* Send back RAB Assignment Response via Iuh */
+ rab_smdl := ts_RAB_SMdL(t_RAB_id(23),
f_ts_RAB_TLA(pars.hnb_rtp_ip), t_RAB_binding_port(pars.hnb_rtp_port));
+ tx := valueof(ts_RANAP_RabAssResp(rab_smdl));
+ RUA.send(tx);
+ /* This shouldn't trigger any MGCP, since nothing
changed on the HNB IP side. Continue below. */
+ }
}
/* Handle CRCX for second leg of endpoint, answer with IP/port */
[] MGCP.receive(tr_CRCX(pars.mgcp_ep, tr_SDP(pars.cn_rtp_ip,
pars.cn_rtp_port))) -> value mgcp_cmd {
@@ -1487,6 +1506,23 @@
f_shutdown_helper();
}
+/* Test case where IuUP IP address announced by HNB and updated through MDCX
+ * makes MGW select a new local IuUP address. HNBGW is expected to update the
HNB
+ * through RAB-Modify-Req. */
+testcase TC_rab_assign_mgw_iuup_addr_chg() runs on test_CT {
+ var ConnHdlr vc_conn;
+ g_num_hnbs := 1;
+ f_init();
+ var template (value) TestHdlrParams pars := t_pars(3);
+ /* Emulate change of local IuUP IP address after rx MDCX: */
+ pars.mgcp_pars.mgw_conn_ran.mgw_rtp_ip_mdcx := "127.3.2.1";
+
+ vc_conn := f_start_handler_with_pars(refers(f_tc_rab_assignment), pars);
+ vc_conn.done;
+
+ f_shutdown_helper();
+}
+
/* Create an Iuh connection; send InitialUE; transceive data both directions */
friend function f_tc_ranap_bidir(charstring id, TestHdlrParams pars) runs on
ConnHdlr {
f_init_handler(pars);
@@ -2688,6 +2724,7 @@
execute(TC_rab_release());
execute(TC_rab_assign_fail());
execute(TC_rab_assign_mgcp_to());
+ execute(TC_rab_assign_mgw_iuup_addr_chg());
execute(TC_ranap_cs_mo_disconnect());
execute(TC_ranap_ps_mo_disconnect());
diff --git a/hnbgw/expected-results.xml b/hnbgw/expected-results.xml
index 3b338bf..fb86108 100644
--- a/hnbgw/expected-results.xml
+++ b/hnbgw/expected-results.xml
@@ -13,6 +13,7 @@
<testcase classname='HNBGW_Tests' name='TC_rab_release' time='MASKED'/>
<testcase classname='HNBGW_Tests' name='TC_rab_assign_fail' time='MASKED'/>
<testcase classname='HNBGW_Tests' name='TC_rab_assign_mgcp_to'
time='MASKED'/>
+ <testcase classname='HNBGW_Tests' name='TC_rab_assign_mgw_iuup_addr_chg'
time='MASKED'/>
<testcase classname='HNBGW_Tests' name='TC_ranap_cs_mo_disconnect'
time='MASKED'/>
<testcase classname='HNBGW_Tests' name='TC_ranap_ps_mo_disconnect'
time='MASKED'/>
<testcase classname='HNBGW_Tests' name='TC_ps_rab_assignment_without_pfcp'
time='MASKED'/>
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: Ibfc37118ed3a67e4ca3f417273bedba127be7639
Gerrit-Change-Number: 35167
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pes...@sysmocom.de>
Gerrit-MessageType: newchange
