| Oliver Smith | 1063213 | 2023-05-12 12:14:22 +0200 | [diff] [blame] | 1 | /* Filter/overlay data rates for CSD, across MS, RAN and CN limitations */ |
| 2 | /* |
| 3 | * (C) 2023 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * Author: Oliver Smith |
| 7 | * |
| 8 | * SPDX-License-Identifier: GPL-2.0+ |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | */ |
| 20 | #pragma once |
| 21 | |
| 22 | #include <osmocom/gsm/gsm_utils.h> |
| 23 | #include <osmocom/gsm/mncc.h> |
| 24 | #include <osmocom/mgcp_client/mgcp_client.h> |
| 25 | |
| 26 | #include <osmocom/msc/csd_bs.h> |
| 27 | #include <osmocom/msc/sdp_msg.h> |
| 28 | |
| 29 | /* Combine various data rate selections to obtain a resulting set allowed by |
| 30 | * all of them. Members reflect the different entities/stages that select data |
| 31 | * rates in CSD. Call csd_filter_run() and obtain the resulting set in |
| 32 | * csd_filter.result. */ |
| 33 | struct csd_filter { |
| 34 | /* The fixed set available on the RAN type, per definition. */ |
| 35 | struct csd_bs_list ran; |
| 36 | /* The services advertised by the MS Bearer Capabilities */ |
| 37 | struct csd_bs_list ms; |
| 38 | /* If known, the set the current RAN cell allows / has available. This |
| 39 | * may not be available if the BSC does not issue this information |
| 40 | * early enough. Should be ignored if empty. */ |
| 41 | struct csd_bs_list bss; |
| 42 | |
| 43 | /* After a channel was assigned, this reflects the chosen BS. */ |
| 44 | enum csd_bs assignment; |
| 45 | }; |
| 46 | |
| 47 | void csd_filter_set_ran(struct csd_filter *filter, enum osmo_rat_type ran_type); |
| 48 | int csd_filter_run(struct csd_filter *filter, struct sdp_msg *result, const struct sdp_msg *remote); |
| 49 | |
| 50 | int csd_filter_to_str_buf(char *buf, size_t buflen, const struct csd_filter *filter, |
| 51 | const struct sdp_msg *result, const struct sdp_msg *remote); |
| 52 | char *csd_filter_to_str_c(void *ctx, const struct csd_filter *filter, const struct sdp_msg *result, const struct sdp_msg *remote); |
| 53 | const char *csd_filter_to_str(const struct csd_filter *filter, const struct sdp_msg *result, const struct sdp_msg *remote); |