84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
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/* Implementation for MSC decisions which interface to send messages out on. */
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/* (C) 2016 by sysmocom s.m.f.c GmbH <info@sysmocom.de>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <osmocom/core/logging.h>
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#include <openbsc/debug.h>
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#include <openbsc/gsm_data.h>
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#include <openbsc/msc_ifaces.h>
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static int msc_tx(struct gsm_subscriber_connection *conn, struct msgb *msg)
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{
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switch (conn->via_ran) {
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case RAN_GERAN_A:
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msg->dst = conn;
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return a_tx(msg);
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case RAN_UTRAN_IU:
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msg->dst = conn->iu.ue_ctx;
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return iu_tx(msg, 0);
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default:
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LOGP(DMSC, LOGL_ERROR,
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"msc_tx(): conn->via_ran invalid (%d)\n",
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conn->via_ran);
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return -1;
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}
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}
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int msc_tx_dtap(struct gsm_subscriber_connection *conn,
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struct msgb *msg)
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{
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return msc_tx(conn, msg);
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}
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/* 9.2.5 CM service accept */
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int msc_gsm48_tx_mm_serv_ack(struct gsm_subscriber_connection *conn)
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{
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struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 SERV ACC");
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struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
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gh->proto_discr = GSM48_PDISC_MM;
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gh->msg_type = GSM48_MT_MM_CM_SERV_ACC;
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DEBUGP(DMM, "-> CM SERVICE ACCEPT\n");
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return msc_tx_dtap(conn, msg);
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}
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/* 9.2.6 CM service reject */
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int msc_gsm48_tx_mm_serv_rej(struct gsm_subscriber_connection *conn,
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enum gsm48_reject_value value)
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{
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struct msgb *msg;
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msg = gsm48_create_mm_serv_rej(value);
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if (!msg) {
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LOGP(DMM, LOGL_ERROR, "Failed to allocate CM Service Reject.\n");
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return -1;
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}
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DEBUGP(DMM, "-> CM SERVICE Reject cause: %d\n", value);
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return msc_tx_dtap(conn, msg);
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}
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