251 lines
6.9 KiB
C
251 lines
6.9 KiB
C
/*
|
|
* Data for the true BSC
|
|
*
|
|
* (C) 2010-2015 by Holger Hans Peter Freyther <zecke@selfish.org>
|
|
* (C) 2010-2015 by On-Waves
|
|
* (C) 2018 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/>.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* NOTE: This is about a *remote* MSC for OsmoBSC and is not part of libmsc.
|
|
*/
|
|
|
|
#ifndef _OSMO_MSC_DATA_H
|
|
#define _OSMO_MSC_DATA_H
|
|
|
|
#include "debug.h"
|
|
#include "osmo_bsc_lcls.h"
|
|
#include "osmux.h"
|
|
|
|
#include <osmocom/core/timer.h>
|
|
#include <osmocom/core/select.h>
|
|
#include <osmocom/gsm/protocol/gsm_04_08.h>
|
|
|
|
|
|
#include <osmocom/sigtran/osmo_ss7.h>
|
|
#include <osmocom/sigtran/sccp_sap.h>
|
|
#include <osmocom/sigtran/sccp_helpers.h>
|
|
#include <osmocom/sigtran/protocol/sua.h>
|
|
#include <osmocom/sigtran/protocol/m3ua.h>
|
|
#include <osmocom/core/fsm.h>
|
|
#include <osmocom/gsm/gsm23003.h>
|
|
|
|
#include <errno.h>
|
|
|
|
struct osmo_bsc_rf;
|
|
struct gsm_network;
|
|
|
|
/* Constants for the MSC rate counters */
|
|
enum {
|
|
/* Rx message counters */
|
|
MSC_CTR_BSSMAP_RX_UDT_RESET_ACKNOWLEDGE,
|
|
MSC_CTR_BSSMAP_RX_UDT_RESET,
|
|
MSC_CTR_BSSMAP_RX_UDT_PAGING,
|
|
MSC_CTR_BSSMAP_RX_UDT_UNKNOWN,
|
|
MSC_CTR_BSSMAP_RX_DT1_CLEAR_CMD,
|
|
MSC_CTR_BSSMAP_RX_DT1_CIPHER_MODE_CMD,
|
|
MSC_CTR_BSSMAP_RX_DT1_ASSIGNMENT_RQST,
|
|
MSC_CTR_BSSMAP_RX_DT1_LCLS_CONNECT_CTRL,
|
|
MSC_CTR_BSSMAP_RX_DT1_HANDOVER_RQST,
|
|
MSC_CTR_BSSMAP_RX_DT1_HANDOVER_CMD,
|
|
MSC_CTR_BSSMAP_RX_DT1_CLASSMARK_RQST,
|
|
MSC_CTR_BSSMAP_RX_DT1_CONFUSION,
|
|
MSC_CTR_BSSMAP_RX_DT1_COMMON_ID,
|
|
MSC_CTR_BSSMAP_RX_DT1_UNKNOWN,
|
|
MSC_CTR_BSSMAP_RX_DT1_DTAP,
|
|
MSC_CTR_BSSMAP_RX_DT1_DTAP_ERROR,
|
|
MSC_CTR_BSSMAP_RX_DT1_PERFORM_LOCATION_REQUEST,
|
|
MSC_CTR_BSSMAP_RX_DT1_PERFORM_LOCATION_ABORT,
|
|
|
|
/* Tx message counters (per connection type) */
|
|
MSC_CTR_BSSMAP_TX_BSS_MANAGEMENT,
|
|
MSC_CTR_BSSMAP_TX_DTAP,
|
|
MSC_CTR_BSSMAP_TX_UNKNOWN,
|
|
MSC_CTR_BSSMAP_TX_SHORT,
|
|
MSC_CTR_BSSMAP_TX_ERR_CONN_NOT_READY,
|
|
MSC_CTR_BSSMAP_TX_ERR_SEND,
|
|
MSC_CTR_BSSMAP_TX_SUCCESS,
|
|
|
|
/* Tx message counters (per message type) */
|
|
MSC_CTR_BSSMAP_TX_UDT_RESET,
|
|
MSC_CTR_BSSMAP_TX_UDT_RESET_ACK,
|
|
MSC_CTR_BSSMAP_TX_DT1_CLEAR_RQST,
|
|
MSC_CTR_BSSMAP_TX_DT1_CLEAR_COMPLETE,
|
|
MSC_CTR_BSSMAP_TX_DT1_ASSIGMENT_FAILURE,
|
|
MSC_CTR_BSSMAP_TX_DT1_ASSIGMENT_COMPLETE,
|
|
MSC_CTR_BSSMAP_TX_DT1_SAPI_N_REJECT,
|
|
MSC_CTR_BSSMAP_TX_DT1_CIPHER_COMPLETE,
|
|
MSC_CTR_BSSMAP_TX_DT1_CIPHER_REJECT,
|
|
MSC_CTR_BSSMAP_TX_DT1_CLASSMARK_UPDATE,
|
|
MSC_CTR_BSSMAP_TX_DT1_LCLS_CONNECT_CTRL_ACK,
|
|
MSC_CTR_BSSMAP_TX_DT1_HANDOVER_REQUIRED,
|
|
MSC_CTR_BSSMAP_TX_DT1_HANDOVER_PERFORMED,
|
|
MSC_CTR_BSSMAP_TX_DT1_HANDOVER_RQST_ACKNOWLEDGE,
|
|
MSC_CTR_BSSMAP_TX_DT1_HANDOVER_DETECT,
|
|
MSC_CTR_BSSMAP_TX_DT1_HANDOVER_COMPLETE,
|
|
MSC_CTR_BSSMAP_TX_DT1_HANDOVER_FAILURE,
|
|
MSC_CTR_BSSMAP_TX_DT1_DTAP,
|
|
MSC_CTR_BSSMAP_TX_DT1_PERFORM_LOCATION_RESPONSE_SUCCESS,
|
|
MSC_CTR_BSSMAP_TX_DT1_PERFORM_LOCATION_RESPONSE_FAILURE,
|
|
|
|
MSC_CTR_MSCPOOL_SUBSCR_NEW,
|
|
MSC_CTR_MSCPOOL_SUBSCR_REATTACH,
|
|
MSC_CTR_MSCPOOL_SUBSCR_KNOWN,
|
|
MSC_CTR_MSCPOOL_SUBSCR_PAGED,
|
|
MSC_CTR_MSCPOOL_SUBSCR_ATTACH_LOST,
|
|
MSC_CTR_MSCPOOL_EMERG_FORWARDED,
|
|
};
|
|
|
|
/* Constants for the MSC stats */
|
|
enum {
|
|
MSC_STAT_MSC_LINKS_ACTIVE,
|
|
MSC_STAT_MSC_LINKS_TOTAL,
|
|
};
|
|
|
|
/*! /brief Information on a remote MSC for libbsc.
|
|
*/
|
|
struct bsc_msc_data {
|
|
struct llist_head entry;
|
|
|
|
/* Back pointer */
|
|
struct gsm_network *network;
|
|
|
|
int allow_emerg;
|
|
|
|
/* Connection data */
|
|
struct osmo_plmn_id core_plmn;
|
|
|
|
/* audio codecs */
|
|
struct gsm48_multi_rate_conf amr_conf;
|
|
bool amr_octet_aligned;
|
|
struct gsm_audio_support **audio_support;
|
|
int audio_length;
|
|
enum bsc_lcls_mode lcls_mode;
|
|
bool lcls_codec_mismatch_allow;
|
|
|
|
int nr;
|
|
|
|
/* structures for keeping rate counters and gauge stats */
|
|
struct rate_ctr_group *msc_ctrs;
|
|
struct osmo_stat_item_group *msc_statg;
|
|
|
|
/* Sigtran connection data */
|
|
struct {
|
|
uint32_t cs7_instance;
|
|
bool cs7_instance_valid;
|
|
struct osmo_sccp_instance *sccp;
|
|
struct osmo_sccp_user *sccp_user;
|
|
|
|
/* IPA or M3UA or SUA? */
|
|
enum osmo_ss7_asp_protocol asp_proto;
|
|
|
|
/* Holds a copy of the our local MSC address,
|
|
* this will be the sccp-address that is associated
|
|
* with the A interface of this particular BSC,
|
|
* this address is filled up by the VTY interface */
|
|
struct osmo_sccp_addr bsc_addr;
|
|
char *bsc_addr_name;
|
|
|
|
/* Holds a copy of the MSC address. This is the
|
|
* address of the MSC that handles the calls of
|
|
* this BSC. The address is configured via the
|
|
* VTY interface */
|
|
struct osmo_sccp_addr msc_addr;
|
|
char *msc_addr_name;
|
|
|
|
/* Pointer to the osmo-fsm that controls the
|
|
* BSSMAP RESET procedure */
|
|
struct bssmap_reset *bssmap_reset;
|
|
} a;
|
|
|
|
uint32_t x_osmo_ign;
|
|
bool x_osmo_ign_configured;
|
|
|
|
/* Whether we want to use Osmux against this MSC. Controlled via VTY */
|
|
enum osmux_usage use_osmux;
|
|
/* Whether we detected the MSC supports Osmux (during BSSMAP_RESET) */
|
|
bool remote_supports_osmux;
|
|
|
|
/* Proxy between IPA/SCCPlite encapsulated MGCP and UDP */
|
|
struct {
|
|
/* local (BSC) IP address to be used */
|
|
char *local_addr;
|
|
/* local (BSC) UDP port to be used to talk with MGW */
|
|
uint16_t local_port;
|
|
/* UDP socket for proxying MGCP via SCCPlite/IPA */
|
|
struct osmo_fd ofd;
|
|
} mgcp_ipa;
|
|
|
|
struct osmo_nri_ranges *nri_ranges;
|
|
bool allow_attach;
|
|
};
|
|
|
|
int osmo_bsc_msc_init(struct bsc_msc_data *msc);
|
|
int osmo_bsc_sccp_init(struct gsm_network *gsmnet);
|
|
|
|
int osmo_bsc_audio_init(struct gsm_network *network);
|
|
|
|
struct bsc_msc_data *osmo_msc_data_find(struct gsm_network *, int);
|
|
struct bsc_msc_data *osmo_msc_data_alloc(struct gsm_network *, int);
|
|
|
|
|
|
struct osmo_cell_global_id *cgi_for_msc(struct bsc_msc_data *msc, struct gsm_bts *bts);
|
|
|
|
/* Helper function to calculate the port number for a given
|
|
* timeslot/multiplex. This functionality is needed to support
|
|
* the sccp-lite scenario where the MGW is handled externally */
|
|
static inline int mgcp_timeslot_to_port(int multiplex, int timeslot, int base)
|
|
{
|
|
if (timeslot == 0) {
|
|
LOGP(DLMGCP, LOGL_ERROR, "Timeslot should not be 0\n");
|
|
timeslot = 255;
|
|
}
|
|
|
|
return base + (timeslot + (32 * multiplex)) * 2;
|
|
}
|
|
|
|
static inline int mgcp_port_to_cic(uint16_t port, uint16_t base)
|
|
{
|
|
if (port < base)
|
|
return -EINVAL;
|
|
return (port - base) / 2;
|
|
}
|
|
|
|
static inline bool msc_is_aoip(const struct bsc_msc_data *msc)
|
|
{
|
|
switch (msc->a.asp_proto) {
|
|
case OSMO_SS7_ASP_PROT_SUA:
|
|
case OSMO_SS7_ASP_PROT_M3UA:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static inline bool msc_is_sccplite(const struct bsc_msc_data *msc)
|
|
{
|
|
switch (msc->a.asp_proto) {
|
|
case OSMO_SS7_ASP_PROT_IPA:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
#endif
|