Forward GPRS SUSPEND REQ from BTS to SGSN using BSSGP
As specified in 3GPP TS 03.60 Section 16.2.1 and 44.018 Section 3.4.15,
a Class B MS is sending a "RR GPRS SUSPEND REQ" via a DCCH to the BTS if
it wants to suspend GPRS services. As of
Change-Id I3c1af662c8f0d3d22da200638480f6ef05c3ed1f, OsmoBTS forwards
this via the PCU socket, so we need to pick it up and send it via BSSGP
to the SGSN.
Change-Id: I7b4beb413a6f974373a404b5a11c44d86ba695d3
Closes: OS#2249
diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp
index b59f198..5cabe4f 100644
--- a/src/pcu_l1_if.cpp
+++ b/src/pcu_l1_if.cpp
@@ -604,6 +604,22 @@
pag_req->identity_lv);
}
+static int pcu_rx_susp_req(struct gsm_pcu_if_susp_req *susp_req)
+{
+ struct bssgp_bvc_ctx *bctx = gprs_bssgp_pcu_current_bctx();
+ struct gprs_ra_id ra_id;
+
+ gsm48_parse_ra(&ra_id, susp_req->ra_id);
+
+ LOGP(DL1IF, LOGL_INFO, "GPRS Suspend request received: TLLI=0x%08x RAI=%s\n",
+ susp_req->tlli, osmo_rai_name(&ra_id));
+
+ if (!bctx)
+ return -1;
+
+ return bssgp_tx_suspend(bctx->nsei, susp_req->tlli, &ra_id);
+}
+
int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim)
{
int rc = 0;
@@ -630,6 +646,9 @@
case PCU_IF_MSG_PAG_REQ:
rc = pcu_rx_pag_req(&pcu_prim->u.pag_req);
break;
+ case PCU_IF_MSG_SUSP_REQ:
+ rc = pcu_rx_susp_req(&pcu_prim->u.susp_req);
+ break;
default:
LOGP(DL1IF, LOGL_ERROR, "Received unknwon PCU msg type %d\n",
msg_type);