ttcn3
/
osmo-ttcn3-hacks
mirror of https://gerrit.osmocom.org/osmo-ttcn3-hacks
10
0
Fork 1
Code Issues Releases Wiki Activity

epdg: Test GTPv2C CreateSession triggerd by EPDG_Tunnel Req 

Change-Id: I8f18c927b1897806233cc9d049c25694c1e639d4
This commit is contained in:
Pau Espin 2023-10-19 16:58:24 +02:00 committed by pespin
parent afe3e19ae0
commit d19fdf59b3
1 changed files with 75 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

78
epdg/EPDG_Tests.ttcn
View File

@ -2,6 +2,7 @@ module EPDG_Tests {
import from Misc_Helpers all;
import from General_Types all;
import from Native_Functions all;
import from Osmocom_Types all;
import from L3_Common all;
@ -13,6 +14,8 @@ import from DIAMETER_Types all;
import from DIAMETER_Templates all;
import from DIAMETER_Emulation all;
import from GTPv2_Types all;
import from GTPv2_Templates all;
import from GTPv2_Emulation all;
modulepar {
@ -108,6 +111,17 @@ type component EPDG_ConnHdlr extends DIAMETER_ConnHdlr, GSUP_ConnHdlr, GTP2_Conn
type record EPDG_ConnHdlrPars {
hexstring imsi,
charstring ue_ip,
/* TEI (Data) local side */
OCT4 teid,
/* TEI (Control) local side */
OCT4 teic,
/* TEI (Data) remote side */
OCT4 teid_remote optional,
/* TEI (Control) remote side */
OCT4 teic_remote optional,
AuthVector vec optional
};
@ -122,11 +136,15 @@ private function f_epdg_connhldr_S6b_expect_eteid(UINT32 ete_id) runs on EPDG_Co
}
}
private function f_init_pars(integer imsi_suffix := 1)
runs on MTC_CT return EPDG_ConnHdlrPars {
var EPDG_ConnHdlrPars pars := {
imsi := f_gen_imsi(imsi_suffix),
ue_ip := "192.168.123.50",
teid := '00000000'O,
teic := '00000000'O,
teid_remote := omit,
teic_remote := omit,
vec := f_gen_auth_vec_3g()
};
return pars;
@ -231,7 +249,7 @@ private function f_init_gtp(charstring id) runs on MTC_CT {
use_gtpu_daemon := false /* TODO: maybe use, set to true */
};
vc_GTP2 := GTPv2_Emulation_CT.create("GTP2_EM");
vc_GTP2 := GTPv2_Emulation_CT.create(id & "-GTPV2");
map(vc_GTP2:GTP2C, system:GTP2C);
connect(vc_GTP2:TEID0, self:TEID0);
vc_GTP2.start(GTPv2_Emulation.main(cfg));
@ -255,6 +273,9 @@ private function f_init_handler(void_fn fn, charstring id, EPDG_ConnHdlrPars par
/* tell GSUP dispatcher to send this IMSI to us */
f_create_gsup_expect(hex2str(g_pars.imsi));
/* tell GTPv2 dispatcher to send this IMSI to us */
f_gtp2_register_imsi(g_pars.imsi);
fn.apply(id);
}
@ -266,9 +287,14 @@ runs on MTC_CT return EPDG_ConnHdlr {
vc_conn := EPDG_ConnHdlr.create(id);
/* GSUP */
connect(vc_conn:GSUP, vc_GSUP:GSUP_CLIENT);
connect(vc_conn:GSUP_PROC, vc_GSUP:GSUP_PROC);
/* GTP2 */
connect(vc_conn:GTP2, vc_GTP2:CLIENT);
connect(vc_conn:GTP2_PROC, vc_GTP2:CLIENT_PROC);
/* SWx */
vc_conn_swx := DIAMETER_ConnHdlr_CT.create(id);
connect(vc_conn_swx:DIAMETER, vc_SWx:DIAMETER_CLIENT);
@ -336,6 +362,36 @@ private altstep as_DIA_SWx_SA_success() runs on EPDG_ConnHdlr {
}
}
/* Diameter SWx SAR + SAA. */
private altstep as_GTP2C_CreateSession_success() 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;
[] GTP2.receive(tr_GTP2C_CreateSessionReq(g_pars.imsi)) -> value rx_msg {
/* TODO: parse TEIC and TEID and store it in g_pars.remote_tei{c,d} */
/* allocate + register TEID-C on local side */
g_pars.teic := f_gtp2_allocate_teid();
g_pars.teid := g_pars.teic;
fteid_c_ie := ts_GTP2C_FTEID(FTEID_IF_S2b_ePDG_GTPC, g_pars.teic, 0,
f_inet_addr(mp_s2b_local_ip), omit);
fteid_u_ie := ts_GTP2C_FTEID(FTEID_IF_S2bU_ePDG_GTPU, g_pars.teid, 2,
f_inet_addr(mp_s2b_local_ip), omit);
paa := ts_GTP2C_PdnAddrAlloc_v4(f_inet_addr(g_pars.ue_ip));
GTP2.send(ts_GTP2C_CreateSessionResp({ fteid_c_ie }, paa));
setverdict(pass);
}
[] GTP2.receive(PDU_GTPCv2:?) -> value rx_msg {
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, log2str("Unexpected GTP2C msg rx: ", rx_msg));
}
}
private function f_GTP2C_CreateSession_success() runs on EPDG_ConnHdlr {
f_gtp2_register_udmsg('20'O);
as_GTP2C_CreateSession_success();
}
/* GSUP AuthInfo Req + Resp, triggers SWx MAR + MAA. */
private function f_GSUP_AI_success() runs on EPDG_ConnHdlr {
var GSUP_PDU rx_gsup;
@ -363,7 +419,7 @@ private function f_GSUP_LU_success() runs on EPDG_ConnHdlr {
var template octetstring destination_name := *;
GSUP.send(ts_GSUP_UL_REQ(g_pars.imsi));
as_DIA_SWx_SA_success();
/* Expect a positive response back to the translator; expect AIA */
/* Expect a positive response back to the translator */
alt {
[] GSUP.receive(tr_GSUP_UL_RES(g_pars.imsi, destination_name));
[] GSUP.receive(GSUP_PDU:?) -> value rx_gsup {
@ -373,9 +429,25 @@ private function f_GSUP_LU_success() runs on EPDG_ConnHdlr {
setverdict(pass);
}
/* GSUP TunnelEPDG Tunnel Req + Resp, triggers S2b CreateSession Req + Response. */
private function f_GSUP_EPDGTunnel_success() runs on EPDG_ConnHdlr {
var GSUP_PDU rx_gsup;
GSUP.send(ts_GSUP_EPDGTunnel_REQ(g_pars.imsi));
f_GTP2C_CreateSession_success();
/* Expect a positive response back to the translator; */
alt {
[] GSUP.receive(tr_GSUP_EPDGTunnel_RES(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);
}
private function f_TC_authinfo_normal(charstring id) runs on EPDG_ConnHdlr {
f_GSUP_AI_success();
f_GSUP_LU_success();
f_GSUP_EPDGTunnel_success();
}
testcase TC_authinfo_normal() runs on MTC_CT {