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ggsn: Introduce test TC_pdp_act2_recovery 

Some code is moved out of f_pdp_ctx_act() into f_handle_create_req() in
order to re-use it in the test.

Related: OS#4165
Change-Id: I48c1bc9287ce8b820e5ea672dffbc5a8503f16d7
This commit is contained in:
Pau Espin 2019-08-23 18:58:53 +02:00
parent 6916ec4648
commit fa1ca02d34
2 changed files with 111 additions and 42 deletions
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152
ggsn_tests/GGSN_Tests.ttcn
View File

@ -267,6 +267,51 @@ module GGSN_Tests {
}
}
function f_handle_create_req(inout PdpContext ctx, in Gtp1cUnitdata ud, in OCT1 exp_cause := '80'O) runs on GT_CT {
var CreatePDPContextResponse cpr := ud.gtpc.gtpc_pdu.createPDPContextResponse;
if (exp_cause == '80'O and exp_cause == cpr.cause.causevalue) {
/* Check if EUA type corresponds to requested type */
if (match(ctx.eua, t_EuaIPv4(?)) and
not match(cpr.endUserAddress, tr_EuaIPv4(?))){
setverdict(fail);
}
if (match(ctx.eua, t_EuaIPv6(?)) and
not match(cpr.endUserAddress, tr_EuaIPv6(?))) {
setverdict(fail);
}
if (match(ctx.eua, t_EuaIPv4v6(?, ?)) and
not match(cpr.endUserAddress, tr_EuaIPv4v6(?, ?))) {
setverdict(fail);
}
/* Check if PCO response corresponds to request */
if (ispresent(ctx.pco_req)) {
if (match(ctx.pco_req, ts_PCO_IPv4_DNS_CONT) and
not match(cpr.protConfigOptions, tr_PCO_IPv4_DNS_CONT_resp(?))) {
log("IPv4 DNS Container requested, but missing");
setverdict(fail);
}
if (match(ctx.pco_req, ts_PCO_IPv6_DNS) and
not match(cpr.protConfigOptions, tr_PCO_IPv6_DNS_resp(?))) {
log("IPv6 DNS Container requested, but missing");
setverdict(fail);
}
}
ctx.teid_remote := cpr.teidDataI.teidDataI;
ctx.teic_remote := cpr.teidControlPlane.teidControlPlane;
ctx.eua := cpr.endUserAddress;
ctx.pco_neg := cpr.protConfigOptions;
setverdict(pass);
} else if (exp_cause != '80'O and exp_cause == cpr.cause.causevalue) {
if (ispresent(cpr.endUserAddress)) {
log("EUA received on createPDPContextResponse cause=" & oct2str(cpr.cause.causevalue));
setverdict(fail);
}
setverdict(pass);
} else {
setverdict(fail);
}
}
/* send a PDP context activation */
function f_pdp_ctx_act(inout PdpContext ctx, OCT1 exp_cause := '80'O) runs on GT_CT {
var Gtp1cUnitdata ud;
@ -280,48 +325,7 @@ module GGSN_Tests {
d := activate(pingpong());
alt {
[] GTPC.receive(tr_GTPC_MsgType(g_peer_c, createPDPContextResponse, ctx.teic)) -> value ud {
var CreatePDPContextResponse cpr := ud.gtpc.gtpc_pdu.createPDPContextResponse;
if (exp_cause == '80'O and exp_cause == cpr.cause.causevalue) {
/* Check if EUA type corresponds to requested type */
if (match(ctx.eua, t_EuaIPv4(?)) and
not match(cpr.endUserAddress, tr_EuaIPv4(?))){
setverdict(fail);
}
if (match(ctx.eua, t_EuaIPv6(?)) and
not match(cpr.endUserAddress, tr_EuaIPv6(?))) {
setverdict(fail);
}
if (match(ctx.eua, t_EuaIPv4v6(?, ?)) and
not match(cpr.endUserAddress, tr_EuaIPv4v6(?, ?))) {
setverdict(fail);
}
/* Check if PCO response corresponds to request */
if (ispresent(ctx.pco_req)) {
if (match(ctx.pco_req, ts_PCO_IPv4_DNS_CONT) and
not match(cpr.protConfigOptions, tr_PCO_IPv4_DNS_CONT_resp(?))) {
log("IPv4 DNS Container requested, but missing");
setverdict(fail);
}
if (match(ctx.pco_req, ts_PCO_IPv6_DNS) and
not match(cpr.protConfigOptions, tr_PCO_IPv6_DNS_resp(?))) {
log("IPv6 DNS Container requested, but missing");
setverdict(fail);
}
}
ctx.teid_remote := cpr.teidDataI.teidDataI;
ctx.teic_remote := cpr.teidControlPlane.teidControlPlane;
ctx.eua := cpr.endUserAddress;
ctx.pco_neg := cpr.protConfigOptions;
setverdict(pass);
} else if (exp_cause != '80'O and exp_cause == cpr.cause.causevalue) {
if (ispresent(cpr.endUserAddress)) {
log("EUA received on createPDPContextResponse cause=" & oct2str(cpr.cause.causevalue));
setverdict(fail);
}
setverdict(pass);
} else {
setverdict(fail);
}
f_handle_create_req(ctx, ud, exp_cause);
}
}
deactivate(d);
@ -1359,6 +1363,69 @@ module GGSN_Tests {
f_pdp_ctx_del(ctx4, '1'B);
}
/* Validate if 2nd CtxCreateReq with increased Recovery IE causes ggsn to drop 1st one (while keeping 2nd one). */
testcase TC_pdp_act2_recovery() runs on GT_CT {
var Gtp1cUnitdata ud;
var default d;
var boolean ctxA_deleted := false;
var boolean ctxB_created := false;
f_init();
var PdpContext ctxA := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
var PdpContext ctxB := valueof(t_DefinePDP(f_rnd_imsi('26242'H), '1234'O, c_ApnInternet, valueof(t_EuaIPv4Dyn)));
f_pdp_ctx_act(ctxA);
g_restart_ctr := int2oct(oct2int(g_restart_ctr) + 1, 1);
log("sending 2nd CreatePDP (recovery increased)");
f_send_gtpc(ts_GTPC_CreatePDP(g_peer_c, g_c_seq_nr, ctxB.imsi, g_restart_ctr,
ctxB.teid, ctxB.teic, ctxB.nsapi, ctxB.eua, ctxB.apn,
g_sgsn_ip_c, g_sgsn_ip_u, ctxB.msisdn, ctxB.pco_req));
T_default.start;
d := activate(pingpong());
alt {
[] GTPC.receive(tr_GTPC_MsgType(g_peer_c, createPDPContextResponse, ctxB.teic)) -> value ud {
f_handle_create_req(ctxB, ud);
if (not ctxB_created) {
ctxB_created := true;
setverdict(pass);
} else {
setverdict(fail, "Repeated createPDPContextResponse(ctxB)");
}
if (not ctxA_deleted) {
repeat;
}
}
[] GTPC.receive(tr_GTPC_MsgType(g_peer_c, deletePDPContextRequest, ctxA.teic)) -> value ud {
if (ispresent(ud.gtpc.gtpc_pdu.deletePDPContextRequest.tearDownIndicator)) {
setverdict(pass);
} else {
setverdict(fail);
}
if (not ctxA_deleted) {
ctxA_deleted := true;
setverdict(pass);
} else {
setverdict(fail, "Repeated deletePDPContextRequest(ctxA)");
}
if (not ctxB_created) {
repeat;
}
}
[] GTPC.receive(tr_GTPC_MsgType(g_peer_c, deletePDPContextRequest, ctxB.teic)) -> value ud {
setverdict(fail, "GGSN dropping still valid pdp ctx");
}
}
deactivate(d);
T_default.stop;
f_pdp_ctx_del(ctxB, '1'B);
}
/* Send a duplicate echo req. osmo-ggsn maintains a queue for sent
responses (60 seconds): If same delete req is sent and duplicate is
detected, saved duplicate response should be sent back. */
@ -1433,6 +1500,7 @@ module GGSN_Tests {
execute(TC_pdp46_act_deact_apn4());
execute(TC_echo_req_resp());
execute(TC_pdp_act2_recovery());
execute(TC_act_deact_retrans_duplicate());
if (m_ggsn_supports_echo_interval) {

1
ggsn_tests/expected-results.xml
View File

@ -23,6 +23,7 @@
<testcase classname='GGSN_Tests' name='TC_pdp46_clients_interact' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_pdp46_act_deact_apn4' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_echo_req_resp' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_pdp_act2_recovery' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_act_deact_retrans_duplicate' time='MASKED'/>
<testcase classname='GGSN_Tests' name='TC_pdp_act_restart_ctr_echo' time='MASKED'/>
</testsuite>