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Harald Welteeac38c32017-05-29 18:02:53 +02001/* GSM MS Testing Layer 3 messages
2 * 3GPP TS 44.014 / GSM TS 04.14 */
3
4/* (C) 2017 by Harald Welte <laforge@gnumonks.org>
5 *
6 * All Rights Reserved
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Affero General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Affero General Public License for more details.
17 *
18 * You should have received a copy of the GNU Affero General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 *
21 */
22
23#include <stdlib.h>
24#include <string.h>
25#include <sys/types.h>
26
27#include "bscconfig.h"
28
Neels Hofmeyr90843962017-09-04 15:04:35 +020029#include <osmocom/msc/debug.h>
30#include <osmocom/msc/gsm_data.h>
31#include <osmocom/msc/gsm_subscriber.h>
32#include <osmocom/msc/gsm_04_08.h>
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010033#include <osmocom/msc/msc_a.h>
Harald Welteeac38c32017-05-29 18:02:53 +020034
35#include <osmocom/gsm/gsm48.h>
36#include <osmocom/gsm/gsm_utils.h>
37#include <osmocom/gsm/protocol/gsm_04_14.h>
38#include <osmocom/gsm/tlv.h>
39#include <osmocom/core/msgb.h>
40#include <osmocom/core/talloc.h>
41#include <osmocom/core/utils.h>
42
43static struct msgb *create_gsm0414_msg(uint8_t msg_type)
44{
45 struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.14");
46 struct gsm48_hdr *gh;
47
48 gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + 1);
49 gh->proto_discr = GSM48_PDISC_TEST;
50 gh->msg_type = msg_type;
51 return msg;
52}
53
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010054static int gsm0414_conn_sendmsg(struct msc_a *msc_a, struct msgb *msg)
Harald Welteeac38c32017-05-29 18:02:53 +020055{
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010056 return msc_a_tx_dtap_to_i(msc_a, msg);
Harald Welteeac38c32017-05-29 18:02:53 +020057}
58
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010059static int gsm0414_tx_simple(struct msc_a *msc_a, uint8_t msg_type)
Harald Welteeac38c32017-05-29 18:02:53 +020060{
61 struct msgb *msg = create_gsm0414_msg(msg_type);
62
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010063 return gsm0414_conn_sendmsg(msc_a, msg);
Harald Welteeac38c32017-05-29 18:02:53 +020064}
65
66
67/* Send a CLOSE_TCH_LOOOP_CMD according to Section 8.1 */
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010068int gsm0414_tx_close_tch_loop_cmd(struct msc_a *msc_a,
Harald Welteeac38c32017-05-29 18:02:53 +020069 enum gsm414_tch_loop_mode loop_mode)
70{
71 struct msgb *msg = create_gsm0414_msg(GSM414_MT_CLOSE_TCH_LOOP_CMD);
72 uint8_t subch;
73
74 subch = (loop_mode << 1);
75 msgb_put_u8(msg, subch);
76
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010077 return gsm0414_conn_sendmsg(msc_a, msg);
Harald Welteeac38c32017-05-29 18:02:53 +020078}
79
80/* Send a OPEN_LOOP_CMD according to Section 8.3 */
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010081int gsm0414_tx_open_loop_cmd(struct msc_a *msc_a)
Harald Welteeac38c32017-05-29 18:02:53 +020082{
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010083 return gsm0414_tx_simple(msc_a, GSM414_MT_OPEN_LOOP_CMD);
Harald Welteeac38c32017-05-29 18:02:53 +020084}
85
86/* Send a ACT_EMMI_CMD according to Section 8.8 */
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010087int gsm0414_tx_act_emmi_cmd(struct msc_a *msc_a)
Harald Welteeac38c32017-05-29 18:02:53 +020088{
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010089 return gsm0414_tx_simple(msc_a, GSM414_MT_ACT_EMMI_CMD);
Harald Welteeac38c32017-05-29 18:02:53 +020090}
91
92/* Send a DEACT_EMMI_CMD according to Section 8.10 */
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010093int gsm0414_tx_deact_emmi_cmd(struct msc_a *msc_a)
Harald Welteeac38c32017-05-29 18:02:53 +020094{
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010095 return gsm0414_tx_simple(msc_a, GSM414_MT_DEACT_EMMI_CMD);
Harald Welteeac38c32017-05-29 18:02:53 +020096}
97
98/* Send a TEST_INTERFACE according to Section 8.11 */
Neels Hofmeyrc4628a32018-12-07 14:47:34 +010099int gsm0414_tx_test_interface(struct msc_a *msc_a,
Harald Welteeac38c32017-05-29 18:02:53 +0200100 uint8_t tested_devs)
101{
102 struct msgb *msg = create_gsm0414_msg(GSM414_MT_TEST_INTERFACE);
103 msgb_put_u8(msg, tested_devs);
Neels Hofmeyrc4628a32018-12-07 14:47:34 +0100104 return gsm0414_conn_sendmsg(msc_a, msg);
Harald Welteeac38c32017-05-29 18:02:53 +0200105}
106
107/* Send a RESET_MS_POSITION_STORED according to Section 8.11 */
Neels Hofmeyrc4628a32018-12-07 14:47:34 +0100108int gsm0414_tx_reset_ms_pos_store(struct msc_a *msc_a,
Harald Welteeac38c32017-05-29 18:02:53 +0200109 uint8_t technology)
110{
111 struct msgb *msg = create_gsm0414_msg(GSM414_MT_RESET_MS_POS_STORED);
112 msgb_put_u8(msg, technology);
Neels Hofmeyrc4628a32018-12-07 14:47:34 +0100113 return gsm0414_conn_sendmsg(msc_a, msg);
Harald Welteeac38c32017-05-29 18:02:53 +0200114}
115
116
117
118/* Entry point for incoming GSM48_PDISC_TEST received from MS */
Neels Hofmeyrc4628a32018-12-07 14:47:34 +0100119int gsm0414_rcv_test(struct msc_a *msc_a,
Harald Welteeac38c32017-05-29 18:02:53 +0200120 struct msgb *msg)
121{
122 struct gsm48_hdr *gh = msgb_l3(msg);
123
124 if (msgb_l3len(msg) < sizeof(*gh))
125 return -1;
126
127 LOGP(DMM, LOGL_NOTICE, "%s: Received TEST class message '%s'\n", "FIXME",
128 get_value_string(gsm414_msgt_names, gh->msg_type));
129
130 return 0;
131}