[SGSN] Fix processing of RA Update Request regarding TLLI
In case we get a RA UPD REQ on a new cell (both served by the same
SGSN), the LLC stack should not allocate a ne LLE/LLME, as the latter
would reset the V(u)sent / V(u)recv to zero and make the MS discard
our responses.
Instead, whenever the LLC stack sees a foreign TLLI, it should always
convert it to the local TLLI before doing any lookup for a LLE/LLME.
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index 77cf3b1..949cd96 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -936,9 +936,14 @@
return gsm48_tx_gmm_ra_upd_rej(msg, GMM_CAUSE_MS_ID_NOT_DERIVED);
}
+ /* Store new BVCI/NSEI in MM context (FIXME: delay until we ack?) */
+ msgid2mmctx(mmctx, msg);
+ /* Bump the statistics of received signalling msgs for this MM context */
+ rate_ctr_inc(&mmctx->ctrg->ctr[GMM_CTR_PKTS_SIG_IN]);
+
/* Update the MM context with the new RA-ID */
bssgp_parse_cell_id(&mmctx->ra, msgb_bcid(msg));
- /* Update the MM context with the new TLLI */
+ /* Update the MM context with the new (i.e. foreign) TLLI */
mmctx->tlli = msgb_tlli(msg);
/* FIXME: Update the MM context with the MS radio acc capabilities */
/* FIXME: Update the MM context with the MS network capabilities */