94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/* (C) 2018-2019 by sysmocom s.f.m.c. GmbH
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* All Rights Reserved
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*
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* Author: Harald Welte, 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/gsm/protocol/gsm_23_003.h>
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#include <osmocom/gsm/protocol/gsm_29_118.h>
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#include <osmocom/msc/vlr.h>
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#include <osmocom/msc/vlr_sgs.h>
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#include <osmocom/msc/paging.h>
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#include <osmocom/core/socket.h>
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struct msc_a;
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static const unsigned int sgs_state_timer_defaults[_NUM_SGS_STATE_TIMERS] = {
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[SGS_STATE_TS5] = SGS_TS5_DEFAULT,
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[SGS_STATE_TS6_2] = SGS_TS6_2_DEFAULT,
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[SGS_STATE_TS7] = SGS_TS7_DEFAULT,
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[SGS_STATE_TS11] = SGS_TS11_DEFAULT,
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[SGS_STATE_TS14] = SGS_TS14_DEFAULT,
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[SGS_STATE_TS15] = SGS_TS15_DEFAULT,
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};
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static const unsigned int sgs_state_counter_defaults[_NUM_SGS_STATE_COUNTERS] = {
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[SGS_STATE_NS7] = SGS_NS7_DEFAULT,
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[SGS_STATE_NS11] = SGS_NS11_DEFAULT,
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};
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struct sgs_connection {
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/* global list of SGs connections */
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struct llist_head entry;
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/* back-pointer */
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struct sgs_state *sgs;
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/* Socket name from osmo_sock_get_name() */
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char sockname[OSMO_SOCK_NAME_MAXLEN];
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/* MME for this connection, if any. This field is NULL until we
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* receive the first "MME name" IE from the MME, which could be part
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* of the RESET procedure, but also just a normal LU request. */
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struct sgs_mme_ctx *mme;
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/* represents the SCTP connection we accept()ed from this MME */
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struct osmo_stream_srv *srv;
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};
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struct sgs_mme_ctx {
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/* global list of MME contexts */
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struct llist_head entry;
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/* back-pointer */
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struct sgs_state *sgs;
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/* MME name as string representation */
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char fqdn[GSM23003_MME_DOMAIN_LEN + 1];
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/* current connection for this MME, if any. Can be NULL if the SCTP
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* connection to the MME was lost and hasn't been re-established yet */
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struct sgs_connection *conn;
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/* FSM for the "VLR reset" procedure" */
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struct osmo_fsm_inst *fi;
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unsigned int ns11_remaining;
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};
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extern struct sgs_state *g_sgs;
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struct sgs_state *sgs_iface_init(void *ctx, struct gsm_network *network);
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int sgs_iface_rx(struct sgs_connection *sgc, struct msgb *msg);
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enum sgsap_service_ind sgs_serv_ind_from_paging_cause(enum paging_cause);
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int sgs_iface_tx_paging(struct vlr_subscr *vsub, enum sgsap_service_ind serv_ind);
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int sgs_iface_tx_dtap_ud(struct msc_a *msc_a, struct msgb *msg);
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void sgs_iface_tx_release(struct vlr_subscr *vsub);
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void sgs_iface_tx_serv_abrt(struct vlr_subscr *vsub);
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