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-rw-r--r--openbsc/src/libiu/iu.c23
1 files changed, 19 insertions, 4 deletions
diff --git a/openbsc/src/libiu/iu.c b/openbsc/src/libiu/iu.c
index 0ce17e4e0..7ca999fa8 100644
--- a/openbsc/src/libiu/iu.c
+++ b/openbsc/src/libiu/iu.c
@@ -409,20 +409,35 @@ int iu_tx(struct msgb *msg_nas, uint8_t sapi)
return 0;
}
-static int ranap_handle_co_iu_rel_req(struct ue_conn_ctx *ctx, RANAP_Iu_ReleaseRequestIEs_t *ies)
+/* Send Iu Release for the given UE connection.
+ * If cause is NULL, the standard "No remaining RAB" cause is sent, otherwise
+ * the provided cause. */
+int iu_tx_release(struct ue_conn_ctx *ctx, const struct RANAP_Cause *cause)
{
struct msgb *msg;
struct osmo_scu_prim *prim;
+ static const struct RANAP_Cause default_cause = {
+ .present = RANAP_Cause_PR_radioNetwork,
+ .choice.radioNetwork = RANAP_CauseRadioNetwork_no_remaining_rab,
+ };
- LOGP(DRANAP, LOGL_INFO, "Received Iu Release Request, Sending Release Command\n");
- msg = ranap_new_msg_iu_rel_cmd(&ies->cause);
+ if (!cause)
+ cause = &default_cause;
+
+ msg = ranap_new_msg_iu_rel_cmd(cause);
msg->l2h = msg->data;
prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim));
prim->u.data.conn_id = ctx->conn_id;
osmo_prim_init(&prim->oph, SCCP_SAP_USER,
OSMO_SCU_PRIM_N_DATA,
PRIM_OP_REQUEST, msg);
- osmo_sua_user_link_down(ctx->link, &prim->oph);
+ return osmo_sua_user_link_down(ctx->link, &prim->oph);
+}
+
+static int ranap_handle_co_iu_rel_req(struct ue_conn_ctx *ctx, RANAP_Iu_ReleaseRequestIEs_t *ies)
+{
+ LOGP(DRANAP, LOGL_INFO, "Received Iu Release Request, Sending Release Command\n");
+ iu_tx_release(ctx, &ies->cause);
return 0;
}