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Diffstat (limited to 'include/osmocom/msc/a_iface.h')
-rw-r--r-- | include/osmocom/msc/a_iface.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/include/osmocom/msc/a_iface.h b/include/osmocom/msc/a_iface.h new file mode 100644 index 000000000..a49ede25e --- /dev/null +++ b/include/osmocom/msc/a_iface.h @@ -0,0 +1,76 @@ +/* (C) 2017 by Sysmocom s.f.m.c. GmbH + * All Rights Reserved + * + * Author: 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/msc/a_reset.h> + +/* A struct to keep a context information about the BSCs we are associated with */ +struct bsc_context { + struct llist_head list; + + /* Holds a copy of the sccp address of the BSC, + * this address will become known as soon as + * a remote BSC tries to make a connection or + * sends a RESET request via UNIDATA */ + struct osmo_sccp_addr bsc_addr; + + /* Holds a copy of the our local MSC address, + * this will be the sccp-address that is associated + * with the A interface */ + struct osmo_sccp_addr msc_addr; + + /* A pointer to the reset handler FSM, the + * state machine is allocated when the BSC + * is registerd. */ + struct a_reset_ctx *reset; + + /* A pointer to the sccp_user that is associated + * with the A interface. We need this information + * to send the resets and to send paging requests */ + struct osmo_sccp_user *sccp_user; +}; + +/* Initalize A interface connection between to MSC and BSC */ +int a_init(struct osmo_sccp_instance *sccp, struct gsm_network *network); + +/* Send DTAP message via A-interface */ +int a_iface_tx_dtap(struct msgb *msg); + +/* Send Cipher mode command via A-interface */ +int a_iface_tx_cipher_mode(const struct gsm_subscriber_connection *conn, + int cipher, const const uint8_t *key, int len, int include_imeisv); + +/* Page a subscriber via A-interface */ +int a_iface_tx_paging(const char *imsi, uint32_t tmsi, uint16_t lac); + +/* Send assignment request via A-interface */ +int a_iface_tx_assignment(const struct gsm_trans *trans); + +/* Send clear command via A-interface */ +int a_iface_tx_clear_cmd(struct gsm_subscriber_connection *conn); + +/* Clear all subscriber connections on a specified BSC + * (Helper function for a_iface_bssap.c) */ +void a_clear_all(struct osmo_sccp_user *scu, const struct osmo_sccp_addr *bsc_addr); + +/* Delete info of a closed connection from the active connection list + * (Helper function for a_iface_bssap.c) */ +void a_delete_bsc_con(uint32_t conn_id); |