lynxis lazus has uploaded this change for review.
SGSN: BSSGP_ConnHdlr: GMM Service Request: handle PMM IDLE UE correct
24.008: 4.7.13.3: explicit mention the completion of the low layer security to be an implicit
Security Command Accept if the UE is in PMM Idle.
Extend the as_service_request() to handle both cases when UE is in PMM-IDLE as well in
PMM-CONNECTED.
Change-Id: I29237997e414aea80f254247da54f909410a4b36
---
M sgsn/BSSGP_ConnHdlr.ttcn
1 file changed, 7 insertions(+), 5 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/97/38397/1
diff --git a/sgsn/BSSGP_ConnHdlr.ttcn b/sgsn/BSSGP_ConnHdlr.ttcn
index db09a5c..4bd16bb 100644
--- a/sgsn/BSSGP_ConnHdlr.ttcn
+++ b/sgsn/BSSGP_ConnHdlr.ttcn
@@ -677,23 +677,25 @@
}
/* Iu only */
-altstep as_service_request(integer ran_index := 0) runs on BSSGP_ConnHdlr {
+altstep as_service_request(boolean ue_in_pmm_idle := true, integer ran_index := 0) runs on BSSGP_ConnHdlr {
var PDU_DTAP_PS_MT mt;
- [] BSSAP.receive(tr_PDU_DTAP_PS_MT(tr_GMM_SERVICE_ACC)) -> value mt {
+ [not ue_in_pmm_idle] BSSAP.receive(tr_PDU_DTAP_PS_MT(tr_GMM_SERVICE_ACC)) -> value mt {
setverdict(pass);
}
[] BSSAP.receive(tr_PDU_DTAP_PS_MT(tr_GMM_SERVICE_REJ)) {
setverdict(fail, "Unexpected Service Reject");
mtc.stop;
}
+ /* 24.008 4.7.13.3: a SecurityModeCommand is an explicit Service Accept if UE was in PMM-IDLE */
[] BSSAP.receive(tr_RANAP_SecurityModeCmd(uia_algs := ?,
uia_key := oct2bit(g_pars.vec.ik),
key_sts := ?)) {
var IntegrityProtectionAlgorithm uia_chosen := 0; /* 0 = standard_UMTS_integrity_algorithm_UIA1 */
BSSAP.send(ts_RANAP_SecurityModeComplete(uia_chosen));
- BSSAP.receive(tr_RANAP_CommonId(imsi_hex2oct(g_pars.imsi)))
- repeat;
+ if (ue_in_pmm_idle) {
+ setverdict(pass);
+ }
}
}
@@ -729,7 +731,7 @@
}
alt {
- [] as_service_request(ran_index) { setverdict(pass); }
+ [] as_service_request(ue_in_pmm_idle := true, ran_index := ran_index) { setverdict(pass); }
[] as_gmm_auth(umts_aka_challenge := true, ran_index := ran_index) { repeat; }
[] BSSAP.receive { repeat; }
[] T.timeout {
To view, visit change 38397. To unsubscribe, or for help writing mail filters, visit settings.