84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/* (C) 2017 by Sysmocom s.f.m.c. GmbH
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* All Rights Reserved
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*
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* Author: Philipp Maier
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include <osmocom/msc/a_reset.h>
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#include <osmocom/msc/transaction.h>
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#include <osmocom/msc/vlr.h>
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#include <osmocom/gsm/protocol/gsm_08_08.h>
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/* A struct to keep a context information about the BSCs we are associated with */
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struct bsc_context {
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struct llist_head list;
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/* Holds a copy of the sccp address of the BSC,
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* this address will become known as soon as
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* a remote BSC tries to make a connection or
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* sends a RESET request via UNIDATA */
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struct osmo_sccp_addr bsc_addr;
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/* Holds a copy of the our local MSC address,
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* this will be the sccp-address that is associated
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* with the A interface */
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struct osmo_sccp_addr msc_addr;
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/* A pointer to the reset handler FSM, the
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* state machine is allocated when the BSC
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* is registerd. */
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struct osmo_fsm_inst *reset_fsm;
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/* A pointer to the sccp_user that is associated
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* with the A interface. We need this information
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* to send the resets and to send paging requests */
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struct osmo_sccp_user *sccp_user;
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};
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/* Initalize A interface connection between to MSC and BSC */
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int a_init(struct osmo_sccp_instance *sccp, struct gsm_network *network);
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/* Send DTAP message via A-interface, take ownership of msg */
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int a_iface_tx_dtap(struct msgb *msg);
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/* Send Cipher mode command via A-interface */
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int a_iface_tx_cipher_mode(const struct ran_conn *conn,
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struct gsm0808_encrypt_info *ei, int include_imeisv);
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/* Page a subscriber via A-interface */
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int a_iface_tx_paging(const char *imsi, uint32_t tmsi, uint16_t lac);
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/* Send assignment request via A-interface */
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int a_iface_tx_assignment(const struct gsm_trans *trans);
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/* Send clear command via A-interface */
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int a_iface_tx_clear_cmd(const struct ran_conn *conn);
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int a_iface_tx_classmark_request(const struct ran_conn *conn);
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/* Clear all RAN connections on a specified BSC
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* (Helper function for a_iface_bssap.c) */
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void a_clear_all(struct osmo_sccp_user *scu, const struct osmo_sccp_addr *bsc_addr);
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void a_start_reset(struct bsc_context *bsc_ctx, bool already_connected);
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/* Delete info of a closed connection from the active connection list
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* (Helper function for a_iface_bssap.c) */
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void a_delete_bsc_con(uint32_t conn_id);
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