pespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/36129?usp=email )
Change subject: epdg: Introduce test TC_upf_echo_req ......................................................................
epdg: Introduce test TC_upf_echo_req
Change-Id: I3fd96f212175959cb113d2f6a362c0e77e5ca0d7 --- M epdg/EPDG_Tests.ttcn 1 file changed, 59 insertions(+), 6 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/29/36129/1
diff --git a/epdg/EPDG_Tests.ttcn b/epdg/EPDG_Tests.ttcn index 92f49ff..ef0882e 100644 --- a/epdg/EPDG_Tests.ttcn +++ b/epdg/EPDG_Tests.ttcn @@ -144,7 +144,9 @@ /* TEI (Data) local side */ OCT4 teid_local optional, /* TEI (Data) remote side */ - OCT4 teid_remote optional + OCT4 teid_remote optional, + /* GTP-U address of the peer (ePDG) */ + charstring gtpu_addr_remote optional };
type record EPDG_ConnHdlrPars { @@ -194,7 +196,8 @@ bearer := { ebi := omit, teid_local := omit, - teid_remote := omit + teid_remote := omit, + gtpu_addr_remote := omit }, vec := f_gen_auth_vec_3g() }; @@ -509,12 +512,21 @@
private function f_EPDG_ConnHdlr_parse_CreateSessionReq(PDU_GTPCv2 rx_msg) runs on EPDG_ConnHdlr { var BearerContextIEs rx_bctx_ies; + var FullyQualifiedTEID rx_fteid_gtpu;
/* 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; + + rx_fteid_gtpu := rx_bctx_ies.fullyQualifiedTEID[0]; + g_pars.bearer.teid_remote := rx_fteid_gtpu.tEID_GRE_Key; + if (rx_fteid_gtpu.v4_Flag == '1'B) { + g_pars.bearer.gtpu_addr_remote := f_inet_ntoa(rx_fteid_gtpu.iPv4_Address); + } + /*if (rx_fteid_gtpu.v6_Flag == '1'B) { + g_gtpu6_remote := rx_fteid_gtpu.iPv6_Address; + }*/
/* allocate + register TEID-C on local side */ g_pars.teic_local := f_gtp2_allocate_teid(); @@ -666,6 +678,21 @@ as_GTP2C_DeleteBearer_success(); }
+private template (value) Gtp1uPeer ts_GtpPeerU(octetstring ip) := { + connId := 1, + remName := f_inet_ntoa(ip), + remPort := GTP1U_PORT +} +private function f_GTP1U_send(octetstring payload) runs on EPDG_ConnHdlr { + var Gtp1uPeer peer := valueof(ts_GtpPeerU(f_inet_addr(g_pars.bearer.gtpu_addr_remote))); + GTP2.send(ts_GTP1U_GPDU(peer, 0 /*seq*/, g_pars.bearer.teid_remote, payload)); +} +private function f_GTP1U_echo_ping_pong() runs on EPDG_ConnHdlr { + var Gtp1uPeer peer := valueof(ts_GtpPeerU(f_inet_addr(g_pars.bearer.gtpu_addr_remote))); + GTP2.send(ts_GTPU_PING(peer, 0 /*seq*/)); + GTP2.receive(tr_GTPU_PONG(peer)); +} + /* GSUP AuthInfo Req + Resp, triggers SWx MAR + MAA. */ private function f_GSUP_AI_success() runs on EPDG_ConnHdlr { var GSUP_PDU rx_gsup; @@ -710,7 +737,7 @@ /* 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; - var template (value) PCO_DATA pco := ts_PCO({ ts_PCO_P_DNS_IPv4, ts_PCO_P_PCSCF_IPv4 }); + var template (value) PCO_DATA pco := PCO_Types.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_success(); /* Expect a positive response back to the translator; */ @@ -721,7 +748,7 @@ tr_GSUP_IE_PDP_QOS(?), tr_GSUP_IE_Charging_Characteristics(?) }; - var template (present) PCO_DATA exp_pco := tr_PCO({ + var template (present) PCO_DATA exp_pco := PCO_Types.tr_PCO({ tr_PCO_P_DNS_IPv4(f_inet_addr(mp_s2b_dns_ipv4)), tr_PCO_P_PCSCF_IPv4(f_inet_addr(mp_s2b_pcscf_ipv4)) }); @@ -738,7 +765,7 @@ /* 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 }); + var template (value) PCO_DATA pco := PCO_Types.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 { @@ -897,6 +924,22 @@ f_TC_concurrent_ues_MTC(100) }
+private function f_TC_upf_echo_req(charstring id) runs on EPDG_ConnHdlr { + f_initial_attach(); + /* Dispatch Echo Resp to this component: */ + f_gtp2_register_teid('00000000'O); + f_GTP1U_echo_ping_pong(); + f_GSUP_PurgeMS_success(); +} +testcase TC_upf_echo_req() 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_upf_echo_req), pars); + vc_conn.done; + setverdict(pass); +} + control { execute ( TC_authinfo_normal() ); execute ( TC_ho_lte_to_wifi() ); @@ -904,6 +947,7 @@ execute ( TC_s2b_CreateSession_rejected() ); execute ( TC_concurrent_ues2() ); execute ( TC_concurrent_ues100() ); + execute ( TC_upf_echo_req() ); }
}
-
pespin