66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/* (C) 2017 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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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/mgcp_client/mgcp_client.h>
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#include <osmocom/msc/gsm_data.h>
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struct ran_conn;
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/* MGCP state handler context. This context information stores all information
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* to handle the direction of the RTP streams via MGCP. There is one instance
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* of this context struct per RAN connection.
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* (see also struct ran_conn) */
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struct mgcp_ctx {
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/* FSM instance, which handles the connection switching procedure */
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struct osmo_fsm_inst *fsm;
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/* RTP endpoint string. This string identifies the endpoint
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* on the MGW on which the RAN and CN connection is created. This
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* endpoint number is assigned by the MGW. */
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char rtp_endpoint[MGCP_ENDPOINT_MAXLEN];
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/* Call id of the current call. Will be derived from the callref
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* of the transaction that is valid during the first CRCX. (The
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* callref may change throughout the call) */
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unsigned int call_id;
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/* Set to true, when the context information is no longer needed */
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bool free_ctx;
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/* RTP connection identifiers */
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char conn_id_ran[MGCP_CONN_ID_LENGTH];
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char conn_id_cn[MGCP_CONN_ID_LENGTH];
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/* Copy of the pointer and the data with context information
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* needed to process the AoIP and MGCP requests (system data) */
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struct mgcp_client *mgcp;
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struct gsm_trans *trans;
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mgcp_trans_id_t mgw_pending_trans;
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};
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int msc_mgcp_try_call_assignment(struct gsm_trans *trans);
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int msc_mgcp_call_assignment(struct gsm_trans *trans);
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int msc_mgcp_ass_complete(struct ran_conn *conn, uint16_t port, char *addr);
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int msc_mgcp_ass_fail(struct ran_conn *conn);
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int msc_mgcp_call_complete(struct gsm_trans *trans, uint16_t port, char *addr);
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int msc_mgcp_call_release(struct gsm_trans *trans);
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