ggsn: Introduce test TC_pdp4_act_update_teid/teic
This test validates that changing the local TEID through UpdatePDPContext
is correctly followed by the GGSN.
Change-Id: Ic6af25866bf7efc2cabf029e49abaf15d5857592
diff --git a/ggsn_tests/GGSN_Tests.ttcn b/ggsn_tests/GGSN_Tests.ttcn
index 8f4e709..48e87bf 100644
--- a/ggsn_tests/GGSN_Tests.ttcn
+++ b/ggsn_tests/GGSN_Tests.ttcn
@@ -376,6 +376,22 @@
}
}
+ function f_handle_update_req(inout PdpContext ctx, in Gtp1cUnitdata ud, in OCT1 exp_cause := '80'O) runs on GT_CT {
+ var UpdatePDPContextResponseGGSN upr := ud.gtpc.gtpc_pdu.updatePDPContextResponse.updatePDPContextResponseGGSN;
+ if (exp_cause == '80'O and exp_cause == upr.cause.causevalue) {
+ ctx.teid_remote := upr.teidDataI.teidDataI;
+ ctx.teic_remote := upr.teidControlPlane.teidControlPlane;
+ if (ispresent(upr.protConfigOptions)) {
+ ctx.pco_neg := upr.protConfigOptions;
+ }
+ setverdict(pass);
+ } else if (exp_cause != '80'O and exp_cause == upr.cause.causevalue) {
+ setverdict(pass);
+ } else {
+ setverdict(fail);
+ }
+ }
+
private altstep as_DIA_CCR(DCC_NONE_CC_Request_Type req_type) runs on GT_CT {
var PDU_DIAMETER rx_dia;
[] DIAMETER_UNIT.receive(tr_DIA_CCR(req_type := req_type)) -> value rx_dia {
@@ -481,6 +497,34 @@
deactivate(d);
T_default.stop;
}
+
+ /* send a Update PdP Context Request, expect Response */
+ function f_pdp_ctx_update(inout PdpContext ctx, OCT1 exp_cause := '80'O, template (omit) OCT4 new_teid := omit, template (omit) OCT4 new_teic := omit) runs on GT_CT {
+ var Gtp1cUnitdata ud;
+ var default d;
+
+ if (not istemplatekind(new_teid, "omit")) {
+ ctx.teid := valueof(new_teid);
+ }
+ if (not istemplatekind(new_teic, "omit")) {
+ ctx.teic := valueof(new_teic);
+ }
+
+ log("sending UpdatePDP");
+ f_send_gtpc(ts_GTPC_UpdatePDP(g_peer_c, ctx.teic_remote, g_c_seq_nr, ctx.imsi, g_restart_ctr,
+ ctx.teid, ctx.teic, ctx.nsapi, g_sgsn_ip_c, g_sgsn_ip_u,
+ ctx.pco_req, ctx.ratType, ctx.uli));
+ T_default.start;
+ d := activate(pingpong());
+ alt {
+ [] GTPC.receive(tr_GTPC_MsgType(g_peer_c, updatePDPContextResponse, ctx.teic)) -> value ud {
+ f_handle_update_req(ctx, ud, exp_cause);
+ }
+ }
+ deactivate(d);
+ T_default.stop;
+ }
+
/* IPv6 router solicitation fe80::2 -> ff02::2 from 02:88:b5:1f:25:59 */
const octetstring c_router_solicit := '6000000000103afffe800000000000000000000000000002ff02000000000000000000000000000285009f2b0000000001010288b51f2559'O;
/* IPv6 neighbor solicitation fe80::2 -> ff02::1:ff00:2 from 02:88:b5:1f:25:59 */
@@ -810,7 +854,7 @@
var Gtp1uUnitdata ud;
T_default.start;
alt {
- [] GTPU.receive(tr_GTPU_GPDU(g_peer_u, ?)) -> value ud {
+ [] GTPU.receive(tr_GTPU_GPDU(g_peer_u, ctx.teid)) -> value ud {
if (f_verify_gtpu_txseq(ud.gtpu, use_gtpu_txseq) == false) {
setverdict(fail);
stop;
@@ -825,6 +869,10 @@
repeat;
}
}
+ [] GTPU.receive(tr_GTPU_GPDU(g_peer_u, ?)) -> value ud {
+ Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
+ "Received wrong local TEID");
+ }
[] GTPU.receive { setverdict(fail); }
[] T_default.timeout { setverdict(fail); }
}
@@ -1384,6 +1432,48 @@
f_pdp_ctx_del(ctx, '1'B);
}
+ /* Validate that SUT updates remote TEIC when requested through UpdatePDPContextRequest */
+ testcase TC_pdp4_act_update_teic() runs on GT_CT {
+ f_init();
+ var PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
+ ctx.pco_req := valueof(ts_PCO_IPv4_DNS_CONT);
+ f_pdp_ctx_act(ctx);
+
+ /* UpdatePDPContestRequest changing the local TEIC */
+ var OCT4 new_teic := ctx.teic;
+ new_teic[3] := new_teic[3] xor4b '11'O;
+ f_pdp_ctx_update(ctx, new_teic := new_teic);
+
+ f_pdp_ctx_del(ctx, '1'B);
+ }
+
+ /* Validate that SUT updates remote TEID when requested through UpdatePDPContextRequest */
+ testcase TC_pdp4_act_update_teid() runs on GT_CT {
+ f_init();
+ var PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
+ ctx.pco_req := valueof(ts_PCO_IPv4_DNS_CONT);
+ f_pdp_ctx_act(ctx);
+
+ f_PCO_ensure_no_duplicates(ctx.pco_neg);
+ var OCT4 dns1_addr := f_PCO_extract_proto(ctx.pco_neg, '000d'O);
+ var OCT4 saddr := ctx.eua.endUserAddress.endUserAddressIPv4.ipv4_address;
+
+ /* Data is sent (back) to the local TEID established during CreatePDPContext */
+ f_send_gtpu(ctx, f_gen_icmpv4_echo(saddr, dns1_addr));
+ f_wait_icmp4_echo_reply(ctx);
+
+ /* UpdatePDPContestRequest changing the local TEID */
+ var OCT4 new_teid := ctx.teid;
+ new_teid[3] := new_teid[3] xor4b '11'O;
+ f_pdp_ctx_update(ctx, new_teid := new_teid);
+
+ /* Check if we can send data after updating the PDP context. Answer should be sent to the new TEID */
+ f_send_gtpu(ctx, f_gen_icmpv4_echo(saddr, dns1_addr));
+ f_wait_icmp4_echo_reply(ctx);
+
+ f_pdp_ctx_del(ctx, '1'B);
+ }
+
/* Test IPv4v6 context activation for dynamic IPv4v6 EUA without DNS request */
testcase TC_pdp46_act_deact() runs on GT_CT {
f_init();
@@ -1717,6 +1807,8 @@
execute(TC_pdp4_clients_interact_without_txseq());
execute(TC_pdp4_act_deact_with_single_dns());
execute(TC_pdp4_act_deact_with_separate_dns());
+ execute(TC_pdp4_act_update_teic());
+ execute(TC_pdp4_act_update_teid());
execute(TC_pdp6_act_deact());
execute(TC_pdp6_act_deact_pcodns());