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e1aed27178
GSUP supports different message classes (e.g. SMS, USSD, Subscriber management), within a daemon, the messages are usually handled in different parts of it. The gsup client mux allow to place callbacks for the different message class. This code original comes from the osmo-msc code and is here re-licensed under the GPLv2. Change-Id: I916c1bb6cfc48f92fc5db2b5c914eb1b4e25fa7f
57 lines
2.3 KiB
C
57 lines
2.3 KiB
C
/*
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* (C) 2019 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: Neels Hofmeyr
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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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 General Public License as published by
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* the Free Software Foundation; either version 2 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 General Public License for more details.
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*
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* You should have received a copy of the GNU 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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#pragma once
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#include <osmocom/gsm/gsup.h>
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struct gsup_client_mux;
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struct ipaccess_unit;
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struct gsup_client_mux_rx_cb {
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int (*func)(struct gsup_client_mux *gcm, void *data, const struct osmo_gsup_message *gsup_msg);
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void *data;
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};
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/* A GSUP client shared between code paths for various GSUP Message Classes.
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* The main task is to dispatch GSUP messages to code paths corresponding to the respective Message Class, i.e.
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* subscriber management, SMS, SS/USSD and inter-MSC messaging.
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* If a GSUP Message Class IE is present in the message, the received message is dispatched directly to the rx_cb entry
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* for that Message Class. Otherwise, the Message Class is determined by a switch() on the Message Type.*/
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struct gsup_client_mux {
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struct osmo_gsup_client *gsup_client;
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/* Target clients by enum osmo_gsup_message_class */
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struct gsup_client_mux_rx_cb rx_cb[OSMO_GSUP_MESSAGE_CLASS_ARRAYSIZE];
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};
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struct gsup_client_mux *gsup_client_mux_alloc(void *talloc_ctx);
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int gsup_client_mux_start(struct gsup_client_mux *gcm, const char *gsup_server_addr_str, uint16_t gsup_server_port,
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struct ipaccess_unit *ipa_dev);
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int gsup_client_mux_tx(struct gsup_client_mux *gcm, const struct osmo_gsup_message *gsup_msg);
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void gsup_client_mux_tx_set_source(const struct gsup_client_mux *gcm, struct osmo_gsup_message *gsup_msg);
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void gsup_client_mux_tx_error_reply(struct gsup_client_mux *gcm, const struct osmo_gsup_message *gsup_orig,
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enum gsm48_gmm_cause cause);
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int gsup_client_mux_rx(struct osmo_gsup_client *gsup_client, struct msgb *msg);
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