a_iface: Include CSFB Indication into BSSMAP CLEAR COMMAND
When a call ends that has been established in an CSFB context, we should
add a CSFB Indication IE to the BSSMAP CLEAR COMMAND to instruct the BSC
to add further CSFB related IEs into the RR RELEASE.
- Check if an SGs association exists and add CSFB Indication IE
Change-Id: I6cfa4b3becdd0138d74e2e1eddd83a0b1568c1de
Related: OS#3778
diff --git a/src/libmsc/a_iface.c b/src/libmsc/a_iface.c
index 0811734..3a7690d 100644
--- a/src/libmsc/a_iface.c
+++ b/src/libmsc/a_iface.c
@@ -416,10 +416,15 @@
int a_iface_tx_clear_cmd(struct ran_conn *conn)
{
struct msgb *msg;
+ struct vlr_subscr *vsub = conn->vsub;
+ bool csfb_ind = false;
LOGPCONN(conn, LOGL_INFO, "Tx BSSMAP CLEAR COMMAND to BSC\n");
- msg = gsm0808_create_clear_command(GSM0808_CAUSE_CALL_CONTROL);
+ if (vsub && vsub->sgs_fsm->state == SGS_UE_ST_ASSOCIATED)
+ csfb_ind = true;
+
+ msg = gsm0808_create_clear_command2(GSM0808_CAUSE_CALL_CONTROL, csfb_ind);
return osmo_sccp_tx_data_msg(conn->a.scu, conn->a.conn_id, msg);
}