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osmo-ttcn3-hacks
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sgsn: Add Test to verify Recovery procedure during CreatePdpResp 

Change-Id: Ic81b854967492194367b7ce8a667c29c777791bf
This commit is contained in:
Pau Espin 2018-07-17 15:50:21 +02:00 committed by Harald Welte
parent 72edc8ad7f
commit 940134537a
3 changed files with 60 additions and 10 deletions
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6
library/GTP_Templates.ttcn
View File

@ -308,11 +308,12 @@ module GTP_Templates {
template GTPC_PDUs ts_CreatePdpRespPDU(OCT1 cause, OCT4 teid_data, OCT4 teid_ctrl, BIT4 nsapi,
octetstring ggsn_ip_sign, octetstring ggsn_ip_data,
OCT4 chg_id, template EndUserAddress eua := omit,
template Recovery_gtpc recovery := omit,
template ProtConfigOptions pco := omit) := {
createPDPContextResponse := {
cause := { '00'O, cause },
reorderingRequired := ts_ReorderReq(false),
recovery := omit,
recovery := recovery,
teidDataI := {
type_gtpc := '00'O,
teidDataI := teid_data
@ -352,12 +353,13 @@ module GTP_Templates {
BIT4 nsapi, octetstring ggsn_ip_sign,
octetstring ggsn_ip_data, OCT4 chg_id,
template EndUserAddress eua := omit,
template Recovery_gtpc recovery := omit,
template ProtConfigOptions pco := omit) := {
peer := peer,
gtpc := ts_GTP1C_PDU(createPDPContextResponse, teid,
valueof(ts_CreatePdpRespPDU(cause, teid_data, teid_ctrl, nsapi,
ggsn_ip_sign, ggsn_ip_data, chg_id,
eua, pco)), seq)
eua, recovery, pco)), seq)
}
/* PCO send base template */

59
sgsn/SGSN_Tests.ttcn
View File

@ -903,9 +903,14 @@ private function f_process_gtp_ctx_act_req(inout PdpActPars apars, PDU_GTPC gtpc
f_gtp_register_teid(apars.ggsn_tei_u);
}
function f_pdp_ctx_act(inout PdpActPars apars) runs on BSSGP_ConnHdlr {
function f_pdp_ctx_act(inout PdpActPars apars, boolean send_recovery := false) runs on BSSGP_ConnHdlr {
var boolean exp_rej := ispresent(apars.exp_rej_cause);
var Gtp1cUnitdata g_ud;
var template Recovery_gtpc recovery := omit;
if (send_recovery) {
recovery := ts_Recovery(apars.ggsn_restart_ctr);
}
BSSGP.send(ts_SM_ACT_PDP_REQ(apars.tid, apars.nsapi, apars.sapi, apars.qos, apars.addr,
apars.apn, apars.pco));
@ -916,7 +921,8 @@ function f_pdp_ctx_act(inout PdpActPars apars) runs on BSSGP_ConnHdlr {
apars.sgsn_tei_c, apars.gtp_resp_cause,
apars.ggsn_tei_c, apars.ggsn_tei_u,
apars.nsapi,
apars.ggsn_ip_c, apars.ggsn_ip_u, apars.chg_id));
apars.ggsn_ip_c, apars.ggsn_ip_u, apars.chg_id,
omit, recovery));
}
alt {
[exp_rej] BSSGP.receive(tr_BD_L3_MT(tr_SM_ACT_PDP_REJ(apars.tid, apars.exp_rej_cause))) {
@ -1263,7 +1269,7 @@ testcase TC_attach_second_attempt() runs on test_CT {
vc_conn.done;
}
private function f_TC_attach_restart_ctr_dettach(charstring id) runs on BSSGP_ConnHdlr {
private function f_TC_attach_restart_ctr_echo(charstring id) runs on BSSGP_ConnHdlr {
var Gtp1cUnitdata g_ud;
var PdpActPars apars := valueof(t_PdpActPars(mp_ggsn_ip));
@ -1294,15 +1300,55 @@ private function f_TC_attach_restart_ctr_dettach(charstring id) runs on BSSGP_Co
}
setverdict(pass);
}
testcase TC_attach_restart_ctr_dettach() runs on test_CT {
/* ATTACH + trigger Recovery procedure through EchoResp */
testcase TC_attach_restart_ctr_echo() runs on test_CT {
var BSSGP_ConnHdlr vc_conn;
g_use_echo := true
f_init();
vc_conn := f_start_handler(refers(f_TC_attach_restart_ctr_dettach), testcasename(), g_gb[0], 23, 30.0);
vc_conn := f_start_handler(refers(f_TC_attach_restart_ctr_echo), testcasename(), g_gb[0], 23, 30.0);
vc_conn.done;
g_use_echo := false
}
private function f_TC_attach_restart_ctr_create(charstring id) runs on BSSGP_ConnHdlr {
var Gtp1cUnitdata g_ud;
var PdpActPars apars := valueof(t_PdpActPars(mp_ggsn_ip));
var integer seq_nr := 23;
var GtpPeer peer;
/* first perform regular attach */
f_TC_attach(id);
/* Use this CTX ACT to send initial Restart counter to SGSN. */
apars.gtp_resp_cause := int2oct(199, 1); /* no resources available */
apars.exp_rej_cause := '1a'O; /* insufficient resources */
f_pdp_ctx_act(apars, true);
/* Increment restart_ctr. This will fake a restarted GGSN when CreatePdpResp is
/* received. */
apars.ggsn_restart_ctr := int2oct(oct2int(apars.ggsn_restart_ctr) + 1, 1);
/* FIXME: Once we can easily handle different pdp ctx simultaneously, it
would be great to have an active pdp context here before triggering
Recovery, and making sure the the DEACT request is sent by the SGSN.
*/
/* Activate a pdp context against the GGSN, send incremented Recovery
IE. This should trigger the recovery path, but still this specific
CTX activation should work. */
apars.exp_rej_cause := omit; /* default value for tests */
apars.gtp_resp_cause := int2oct(128, 1); /* default value for tests */
f_pdp_ctx_act(apars, true);
setverdict(pass);
}
/* ATTACH + trigger Recovery procedure through CreatePdpResp */
testcase TC_attach_restart_ctr_create() runs on test_CT {
var BSSGP_ConnHdlr vc_conn;
f_init();
vc_conn := f_start_handler(refers(f_TC_attach_restart_ctr_create), testcasename(), g_gb[0], 24, 30.0);
vc_conn.done;
}
/* ATTACH + PDP CTX ACT + user plane traffic + PDP CTX DEACT in MT direction + trigger T3395 */
private function f_TC_attach_pdp_act_deact_mt_t3395_expire(charstring id) runs on BSSGP_ConnHdlr {
var PdpActPars apars := valueof(t_PdpActPars(mp_ggsn_ip));
@ -1713,7 +1759,8 @@ control {
execute( TC_attach_pdp_act_user_deact_mo() );
execute( TC_attach_pdp_act_user_deact_mt() );
execute( TC_attach_second_attempt() );
execute( TC_attach_restart_ctr_dettach() );
execute( TC_attach_restart_ctr_echo() );
execute( TC_attach_restart_ctr_create() );
execute( TC_attach_pdp_act_deact_mt_t3395_expire() );
}

5
sgsn/expected-results.xml
View File

@ -1,5 +1,5 @@
<?xml version="1.0"?>
<testsuite name='Titan' tests='28' failures='4' errors='3' skipped='0' inconc='0' time='MASKED'>
<testsuite name='Titan' tests='29' failures='4' errors='3' skipped='0' inconc='0' time='MASKED'>
<testcase classname='SGSN_Tests' name='TC_attach' time='MASKED'/>
<testcase classname='SGSN_Tests' name='TC_attach_mnc3' time='MASKED'/>
<testcase classname='SGSN_Tests' name='TC_attach_umts_aka_umts_res' time='MASKED'/>
@ -60,6 +60,7 @@
<testcase classname='SGSN_Tests' name='TC_attach_second_attempt' time='MASKED'>
<error type='DTE'></error>
</testcase>
<testcase classname='SGSN_Tests' name='TC_attach_restart_ctr_dettach' time='MASKED'/>
<testcase classname='SGSN_Tests' name='TC_attach_restart_ctr_echo' time='MASKED'/>
<testcase classname='SGSN_Tests' name='TC_attach_restart_ctr_create' time='MASKED'/>
<testcase classname='SGSN_Tests' name='TC_attach_pdp_act_deact_mt_t3395_expire' time='MASKED'/>
</testsuite>