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osmo-msc/src/libmsc/gsm_04_14.c

129 lines
3.6 KiB

/* GSM MS Testing Layer 3 messages
* 3GPP TS 44.014 / GSM TS 04.14 */
/* (C) 2017 by Harald Welte <laforge@gnumonks.org>
*
* 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 <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <osmocom/msc/debug.h>
#include <osmocom/msc/gsm_data.h>
#include <osmocom/msc/gsm_subscriber.h>
#include <osmocom/msc/gsm_04_08.h>
#include <osmocom/msc/msc_a.h>
#include <osmocom/gsm/gsm48.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmocom/gsm/protocol/gsm_04_14.h>
#include <osmocom/gsm/tlv.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
static struct msgb *create_gsm0414_msg(uint8_t msg_type)
{
struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.14");
struct gsm48_hdr *gh;
gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + 1);
gh->proto_discr = GSM48_PDISC_TEST;
gh->msg_type = msg_type;
return msg;
}
static int gsm0414_conn_sendmsg(struct msc_a *msc_a, struct msgb *msg)
{
return msc_a_tx_dtap_to_i(msc_a, msg);
}
static int gsm0414_tx_simple(struct msc_a *msc_a, uint8_t msg_type)
{
struct msgb *msg = create_gsm0414_msg(msg_type);
return gsm0414_conn_sendmsg(msc_a, msg);
}
/* Send a CLOSE_TCH_LOOOP_CMD according to Section 8.1 */
int gsm0414_tx_close_tch_loop_cmd(struct msc_a *msc_a,
enum gsm414_tch_loop_mode loop_mode)
{
struct msgb *msg = create_gsm0414_msg(GSM414_MT_CLOSE_TCH_LOOP_CMD);
uint8_t subch;
subch = (loop_mode << 1);
msgb_put_u8(msg, subch);
return gsm0414_conn_sendmsg(msc_a, msg);
}
/* Send a OPEN_LOOP_CMD according to Section 8.3 */
int gsm0414_tx_open_loop_cmd(struct msc_a *msc_a)
{
return gsm0414_tx_simple(msc_a, GSM414_MT_OPEN_LOOP_CMD);
}
/* Send a ACT_EMMI_CMD according to Section 8.8 */
int gsm0414_tx_act_emmi_cmd(struct msc_a *msc_a)
{
return gsm0414_tx_simple(msc_a, GSM414_MT_ACT_EMMI_CMD);
}
/* Send a DEACT_EMMI_CMD according to Section 8.10 */
int gsm0414_tx_deact_emmi_cmd(struct msc_a *msc_a)
{
return gsm0414_tx_simple(msc_a, GSM414_MT_DEACT_EMMI_CMD);
}
/* Send a TEST_INTERFACE according to Section 8.11 */
int gsm0414_tx_test_interface(struct msc_a *msc_a,
uint8_t tested_devs)
{
struct msgb *msg = create_gsm0414_msg(GSM414_MT_TEST_INTERFACE);
msgb_put_u8(msg, tested_devs);
return gsm0414_conn_sendmsg(msc_a, msg);
}
/* Send a RESET_MS_POSITION_STORED according to Section 8.11 */
int gsm0414_tx_reset_ms_pos_store(struct msc_a *msc_a,
uint8_t technology)
{
struct msgb *msg = create_gsm0414_msg(GSM414_MT_RESET_MS_POS_STORED);
msgb_put_u8(msg, technology);
return gsm0414_conn_sendmsg(msc_a, msg);
}
/* Entry point for incoming GSM48_PDISC_TEST received from MS */
int gsm0414_rcv_test(struct msc_a *msc_a,
struct msgb *msg)
{
struct gsm48_hdr *gh = msgb_l3(msg);
if (msgb_l3len(msg) < sizeof(*gh))
return -1;
LOGP(DMM, LOGL_NOTICE, "%s: Received TEST class message '%s'\n", "FIXME",
get_value_string(gsm414_msgt_names, gh->msg_type));
return 0;
}