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/* Implementations for receiving or sending MM|CC|... messages from/to the
* BSC|RNC direction, regardless of which particular external interface is
* actually involved (A or IuCS). */
/* (C) 2016 by sysmocom s.m.f.c GmbH <info@sysmocom.de>
*
* Based on parts of osmo_msc.c:
* (C) 2010,2013 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010 by On-Waves
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <osmocom/core/logging.h>
#include <openbsc/debug.h>
#include <openbsc/msc_api.h>
#include <openbsc/gsm_data.h>
#include <openbsc/transaction.h>
int msc_compl_l3(struct gsm_subscriber_connection *conn, struct msgb *msg,
uint16_t chosen_channel)
{
gsm0408_new_conn(conn);
gsm0408_dispatch(conn, msg);
/*
* If this is a silent call we want the channel to remain open as long as
* possible and this is why we accept this connection regardless of any
* pending transaction or ongoing operation.
*/
if (conn->silent_call)
return MSC_CONN_ACCEPT;
if (conn->loc_operation || conn->sec_operation || conn->anch_operation)
return MSC_CONN_ACCEPT;
if (trans_has_conn(conn))
return MSC_CONN_ACCEPT;
LOGP(DRR, LOGL_INFO, "MSC Complete L3: Rejecting connection.\n");
return MSC_CONN_REJECT;
}
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