diff options
Diffstat (limited to 'include/osmocom/msc/sgs_iface.h')
-rw-r--r-- | include/osmocom/msc/sgs_iface.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/include/osmocom/msc/sgs_iface.h b/include/osmocom/msc/sgs_iface.h new file mode 100644 index 000000000..a167cd6d8 --- /dev/null +++ b/include/osmocom/msc/sgs_iface.h @@ -0,0 +1,87 @@ +/* (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/core/socket.h> + +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); +int sgs_iface_tx_paging(struct vlr_subscr *vsub, enum sgsap_service_ind serv_ind); +int sgs_iface_tx_dtap_ud(struct msgb *msg); +void sgs_iface_tx_release(struct ran_conn *conn); |