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/* A-interface implementation, from MSC to BSC */
/* (C) 2016 by sysmocom s.m.f.c GmbH <info@sysmocom.de>
*
* 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/msgb.h>
#include <osmocom/core/logging.h>
#include <openbsc/debug.h>
#include <openbsc/gsm_data.h>
#include <openbsc/msc_ifaces.h>
int a_tx(struct msgb *msg)
{
LOGP(DMSC, LOGL_ERROR, "message to be sent to BSC, but A-interface"
" not implemented.\n%s\n", osmo_hexdump(msg->data, msg->len));
return -1;
}
int gsm0808_cipher_mode(struct gsm_subscriber_connection *conn, int cipher,
const uint8_t *key, int len, int include_imeisv)
{
LOGP(DMSC, LOGL_ERROR, "gsm0808_cipher_mode(): message to be sent to"
" BSC, but A interface not yet implemented.\n");
return -1;
}
/* from gsm_04_08_utils.c *****/
/* 9.2.5 CM service accept */
int gsm48_tx_mm_serv_ack(struct gsm_subscriber_connection *conn)
{
struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 SERV ACK");
struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
gh->proto_discr = GSM48_PDISC_MM;
gh->msg_type = GSM48_MT_MM_CM_SERV_ACC;
DEBUGP(DMM, "-> CM SERVICE ACK\n");
return msc_tx_dtap(conn, msg);
}
/* 9.2.6 CM service reject */
int gsm48_tx_mm_serv_rej(struct gsm_subscriber_connection *conn,
enum gsm48_reject_value value)
{
struct msgb *msg;
msg = gsm48_create_mm_serv_rej(value);
if (!msg) {
LOGP(DMM, LOGL_ERROR, "Failed to allocate CM Service Reject.\n");
return -1;
}
DEBUGP(DMM, "-> CM SERVICE Reject cause: %d\n", value);
return msc_tx_dtap(conn, msg);
}
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