55 lines
2.3 KiB
C
55 lines
2.3 KiB
C
/* Filter/overlay data rates for CSD, across MS, RAN and CN limitations */
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/*
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* (C) 2023 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: Oliver Smith
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*
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* SPDX-License-Identifier: GPL-2.0+
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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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#pragma once
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/gsm/mncc.h>
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#include <osmocom/mgcp_client/mgcp_client.h>
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#include <osmocom/msc/csd_bs.h>
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#include <osmocom/msc/sdp_msg.h>
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/* Combine various data rate selections to obtain a resulting set allowed by
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* all of them. Members reflect the different entities/stages that select data
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* rates in CSD. Call csd_filter_run() and obtain the resulting set in
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* csd_filter.result. */
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struct csd_filter {
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/* The fixed set available on the RAN type, per definition. */
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struct csd_bs_list ran;
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/* The services advertised by the MS Bearer Capabilities */
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struct csd_bs_list ms;
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/* If known, the set the current RAN cell allows / has available. This
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* may not be available if the BSC does not issue this information
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* early enough. Should be ignored if empty. */
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struct csd_bs_list bss;
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/* After a channel was assigned, this reflects the chosen BS. */
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enum csd_bs assignment;
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};
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void csd_filter_set_ran(struct csd_filter *filter, enum osmo_rat_type ran_type);
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int csd_filter_run(struct csd_filter *filter, struct osmo_sdp_msg *sdp_result, struct csd_bs_list *bs_result,
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const struct csd_bs_list *remote);
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int csd_filter_to_str_buf(char *buf, size_t buflen, const struct csd_filter *filter,
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const struct osmo_sdp_msg *result, const struct osmo_sdp_msg *remote);
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char *csd_filter_to_str_c(void *ctx, const struct csd_filter *filter, const struct osmo_sdp_msg *result, const struct osmo_sdp_msg *remote);
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const char *csd_filter_to_str(const struct csd_filter *filter, const struct osmo_sdp_msg *result, const struct osmo_sdp_msg *remote);
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