arehbein has submitted this change. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/31199 )
Change subject: sgsn: Add TC_attach_timeout_after_pdp_act ......................................................................
sgsn: Add TC_attach_timeout_after_pdp_act
Related: OS#4221 Change-Id: Ib3e3c021707b707811388616e28d7d7cc22f7b53 --- M sgsn/SGSN_Tests.ttcn 1 file changed, 70 insertions(+), 0 deletions(-)
Approvals: laforge: Looks good to me, but someone else must approve lynxis lazus: Looks good to me, approved pespin: Looks good to me, but someone else must approve Jenkins Builder: Verified
diff --git a/sgsn/SGSN_Tests.ttcn b/sgsn/SGSN_Tests.ttcn index f633101..7cdf72c 100644 --- a/sgsn/SGSN_Tests.ttcn +++ b/sgsn/SGSN_Tests.ttcn @@ -1017,6 +1017,65 @@ f_cleanup(); }
+/* Let T3350 expire while the MS holds an active PDP context (OS#4221). Do this by + * Establishing a PDP context and then resending an ATTACH REQUEST, + * making sure that exactly five ATTACH ACCEPTS are sent */ +private function f_TC_attach_timeout_after_pdp_act(charstring id) runs on BSSGP_ConnHdlr { + var PdpActPars apars := valueof(t_PdpActPars(mp_ggsn_ip)); + /* Vars needed for triggering T3350 timeouts */ + const integer ran_index := 0; + /* See TS 24.008 Rel. 16 Sect. 4.7.3.1.6 c) */ + const integer gmm_attach_repeats := 5; + /* See TS 24.008 Rel. 16 Table 11.4 */ + const float T3350 := 6.0; + var template PDU_L3_MS_SGSN attach_req; + timer t_receive_GMM_ATTACH_ACCEPT; + var RoutingAreaIdentificationV rai := f_random_RAI(); + + /* First establish PDP context */ + f_TC_attach(id); + f_pdp_ctx_act(apars); + + /* Now, try another GPRS attach procedure. For further code comments up until receiving the attach + * accept from the SGSN, see definition of f_gmm_attach() */ + attach_req := ts_GMM_ATTACH_REQ(f_mi_get_lv(), rai, false, false, omit, omit); + f_send_l3(attach_req, ran_index); + f_gmm_auth(false, false, ran_index); + f_gmm_gsup_lu_isd(); + + BSSGP[ran_index].clear; + log("Trying to receive ", gmm_attach_repeats, " ATTACH ACCEPTs"); + for (var integer i := 1; i <= gmm_attach_repeats; i := i+1) { + t_receive_GMM_ATTACH_ACCEPT.start(T3350 + 0.5); + alt { + [] BSSGP[ran_index].receive(tr_GMM_ATTACH_ACCEPT('001'B, ?, ?)) { + t_receive_GMM_ATTACH_ACCEPT.stop; + } + [] t_receive_GMM_ATTACH_ACCEPT.timeout { + setverdict(fail, "Timeout on receiving ", i, "th ATTACH ACCEPT") + } + } + } + log("Have received ", gmm_attach_repeats, " ATTACH ACCEPT messages"); + log("Make sure not more than ", gmm_attach_repeats, " ATTACH ACCEPT messages are sent"); + t_receive_GMM_ATTACH_ACCEPT.start(T3350 + 0.5); + alt { + [] BSSGP[ran_index].receive(tr_GMM_ATTACH_ACCEPT('001'B, ?, ?)) { + setverdict(fail, "Received ", gmm_attach_repeats + 1, "th ATTACH ACCEPT") + } + [] t_receive_GMM_ATTACH_ACCEPT.timeout { } + } + + setverdict(pass); +} + +testcase TC_attach_timeout_after_pdp_act() runs on test_CT { + var BSSGP_ConnHdlr vc_conn; + f_init(); + vc_conn := f_start_handler(refers(f_TC_attach_timeout_after_pdp_act), testcasename(), g_gb, 21); + f_cleanup(); +} + /* MS never responds to ID REQ, expect ATTACH REJECT */ private function f_TC_attach_auth_id_timeout(charstring id) runs on BSSGP_ConnHdlr { var RoutingAreaIdentificationV old_ra := f_random_RAI(); @@ -3630,6 +3689,7 @@ execute( TC_attach_mnc3() ); execute( TC_attach_umts_aka_umts_res() ); execute( TC_attach_umts_aka_gsm_sres() ); + execute( TC_attach_timeout_after_pdp_act() ); execute( TC_attach_auth_id_timeout() ); execute( TC_attach_auth_sai_timeout() ); execute( TC_attach_auth_sai_reject() );
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arehbein