src/libmsc/ran_infra.c

/* Lookup table for various RAN implementations */
/*
 * (C) 2019 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
 * All Rights Reserved
 *
 * SPDX-License-Identifier: AGPL-3.0+
 *
 * Author: Neels Hofmeyr
 *
 * 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/utils.h>
#include <osmocom/core/tdef.h>

#include <osmocom/msc/debug.h>
#include <osmocom/msc/ran_msg_a.h>
#include <osmocom/msc/ran_msg_iu.h>
#include <osmocom/msc/ran_peer.h>

#include <osmocom/msc/ran_infra.h>

#include "config.h"

const struct value_string an_proto_names[] = {
	{ OSMO_GSUP_ACCESS_NETWORK_PROTOCOL_TS3G_48006, "Ts3G-48006" },
	{ OSMO_GSUP_ACCESS_NETWORK_PROTOCOL_TS3G_25413, "Ts3G-25413" },
	{}
};

#define RAN_TDEFS \
	{ .T = -1, .default_val = 5, .desc = "RAN connection Complete Layer 3, Authentication and Ciphering timeout" }, \
	{ .T = -2, .default_val = 30, .desc = "RAN connection release sanity timeout" }, \
	{ .T = -3, .default_val = 10, .desc = "Timeout to find a target BSS after Handover Required" }, \
	{ .T = -4, .default_val = 10, .desc = "Paging response timeout" }, \
	{ .T = -36, .default_val = 0, .unit = OSMO_TDEF_MS, \
	  .desc = "Delay connection release after LU.  Useful to optimize an SMSC to dispatch " \
		  "pending messages within the initial connection." }, \

struct osmo_tdef msc_tdefs_geran[] = {
	RAN_TDEFS
	{}
};

struct osmo_tdef msc_tdefs_utran[] = {
	RAN_TDEFS
	{}
};

struct osmo_tdef msc_tdefs_sgs[] = {
	{ .T = -4, .default_val = 10, .desc = "Paging response timeout" },
	{}
};

static __attribute__((constructor)) void ran_infra_init()
{
	osmo_tdefs_reset(msc_tdefs_geran);
	osmo_tdefs_reset(msc_tdefs_utran);
	osmo_tdefs_reset(msc_tdefs_sgs);
}

struct ran_infra msc_ran_infra[] = {
	[OSMO_RAT_UNKNOWN] = {
		.type = OSMO_RAT_UNKNOWN,
		.log_subsys = DMSC,
		.tdefs = msc_tdefs_geran,
	},
	[OSMO_RAT_GERAN_A] = {
		.type = OSMO_RAT_GERAN_A,
		.an_proto = OSMO_GSUP_ACCESS_NETWORK_PROTOCOL_TS3G_48006,
		.ssn = OSMO_SCCP_SSN_BSSAP,
		.log_subsys = DBSSAP,
		.tdefs = msc_tdefs_geran,
		.sccp_ran_ops = {
			.up_l2 = ran_peer_up_l2,
			.disconnect = ran_peer_disconnect,
			.is_reset_msg = bssmap_is_reset_msg,
			.make_reset_msg = bssmap_make_reset_msg,
			.make_paging_msg = bssmap_make_paging_msg,
			.msg_name = bssmap_msg_name,
		},
		.ran_dec_l2 = ran_a_decode_l2,
		.ran_encode = ran_a_encode,
	},
	[OSMO_RAT_UTRAN_IU] = {
		.type = OSMO_RAT_UTRAN_IU,
		.an_proto = OSMO_GSUP_ACCESS_NETWORK_PROTOCOL_TS3G_25413,
		.ssn = OSMO_SCCP_SSN_RANAP,
		.log_subsys = DIUCS,
		.tdefs = msc_tdefs_utran,
#if BUILD_IU
		.sccp_ran_ops = {
			.up_l2 = ran_peer_up_l2,
			.disconnect = ran_peer_disconnect,
			.is_reset_msg = ranap_is_reset_msg,
			.make_reset_msg = ranap_make_reset_msg,
			.make_paging_msg = ranap_make_paging_msg,
			.msg_name = ranap_msg_name,
		},
		.ran_dec_l2 = ran_iu_decode_l2,
		.ran_encode = ran_iu_encode,
#endif
		.force_mgw_codecs_to_ran = {
			.count = 1,
			.codec = {
				{
					.payload_type = 96,
					.subtype_name = "VND.3GPP.IUFP",
					.rate = 16000,
				},
			},
		},
	},
	[OSMO_RAT_EUTRAN_SGS] = {
		.type = OSMO_RAT_EUTRAN_SGS,
		.log_subsys = DSGS,
		.ran_encode = NULL,
		.tdefs = msc_tdefs_sgs,
	},
};

const int msc_ran_infra_len = ARRAY_SIZE(msc_ran_infra);