| /* (C) 2018-2019 by sysmocom s.f.m.c. GmbH |
| * All Rights Reserved |
| * |
| * Author: Harald Welte, Philipp Maier |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #pragma once |
| |
| #include <osmocom/gsm/protocol/gsm_23_003.h> |
| #include <osmocom/gsm/protocol/gsm_29_118.h> |
| #include <osmocom/msc/vlr.h> |
| #include <osmocom/msc/vlr_sgs.h> |
| #include <osmocom/msc/paging.h> |
| #include <osmocom/core/socket.h> |
| |
| struct msc_a; |
| |
| static const unsigned int sgs_state_timer_defaults[_NUM_SGS_STATE_TIMERS] = { |
| [SGS_STATE_TS5] = SGS_TS5_DEFAULT, |
| [SGS_STATE_TS6_2] = SGS_TS6_2_DEFAULT, |
| [SGS_STATE_TS7] = SGS_TS7_DEFAULT, |
| [SGS_STATE_TS11] = SGS_TS11_DEFAULT, |
| [SGS_STATE_TS14] = SGS_TS14_DEFAULT, |
| [SGS_STATE_TS15] = SGS_TS15_DEFAULT, |
| }; |
| |
| static const unsigned int sgs_state_counter_defaults[_NUM_SGS_STATE_COUNTERS] = { |
| [SGS_STATE_NS7] = SGS_NS7_DEFAULT, |
| [SGS_STATE_NS11] = SGS_NS11_DEFAULT, |
| }; |
| |
| struct sgs_connection { |
| /* global list of SGs connections */ |
| struct llist_head entry; |
| |
| /* back-pointer */ |
| struct sgs_state *sgs; |
| |
| /* Socket name from osmo_sock_get_name() */ |
| char sockname[OSMO_SOCK_NAME_MAXLEN]; |
| |
| /* MME for this connection, if any. This field is NULL until we |
| * receive the first "MME name" IE from the MME, which could be part |
| * of the RESET procedure, but also just a normal LU request. */ |
| struct sgs_mme_ctx *mme; |
| |
| /* represents the SCTP connection we accept()ed from this MME */ |
| struct osmo_stream_srv *srv; |
| }; |
| |
| struct sgs_mme_ctx { |
| /* global list of MME contexts */ |
| struct llist_head entry; |
| |
| /* back-pointer */ |
| struct sgs_state *sgs; |
| |
| /* MME name as string representation */ |
| char fqdn[GSM23003_MME_DOMAIN_LEN + 1]; |
| |
| /* current connection for this MME, if any. Can be NULL if the SCTP |
| * connection to the MME was lost and hasn't been re-established yet */ |
| struct sgs_connection *conn; |
| |
| /* FSM for the "VLR reset" procedure" */ |
| struct osmo_fsm_inst *fi; |
| unsigned int ns11_remaining; |
| }; |
| |
| extern struct sgs_state *g_sgs; |
| |
| struct sgs_state *sgs_iface_init(void *ctx, struct gsm_network *network); |
| int sgs_iface_rx(struct sgs_connection *sgc, struct msgb *msg); |
| enum sgsap_service_ind sgs_serv_ind_from_paging_cause(enum paging_cause); |
| int sgs_iface_tx_paging(struct vlr_subscr *vsub, enum sgsap_service_ind serv_ind); |
| int sgs_iface_tx_dtap_ud(struct msc_a *msc_a, struct msgb *msg); |
| void sgs_iface_tx_release(struct vlr_subscr *vsub); |
| |