155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/* Everything related to the BSC connection */
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/*
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* (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
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* (C) 2010-2011 by On-Waves
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* All Rights Reserved
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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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#ifndef BSC_DATA_H
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#define BSC_DATA_H
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#include "mtp_data.h"
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#include <osmocore/linuxlist.h>
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#include <osmocore/select.h>
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#include <osmocore/timer.h>
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#include <osmocore/write_queue.h>
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#include <osmocore/protocol/gsm_04_08.h>
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#include <osmocom/sccp/sccp.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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struct bsc_data;
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struct snmp_mtp_session;
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struct mtp_udp_data {
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struct write_queue write_queue;
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struct snmp_mtp_session *session;
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struct timer_list snmp_poll;
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struct llist_head links;
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};
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struct mtp_udp_link {
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/* subclass */
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struct mtp_link base;
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/* UDP specific stuff */
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struct bsc_data *bsc;
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int link_index;
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int reset_timeout;
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struct sockaddr_in remote;
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struct mtp_udp_data *data;
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struct llist_head entry;
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};
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struct bsc_data {
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/* MSC */
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char *msc_address;
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struct write_queue msc_connection;
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struct timer_list reconnect_timer;
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int first_contact;
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int msc_time;
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struct timer_list msc_timeout;
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int msc_ip_dscp;
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int ping_time;
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int pong_time;
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struct timer_list ping_timeout;
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struct timer_list pong_timeout;
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int msc_link_down;
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struct llist_head sccp_connections;
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struct timer_list reset_timeout;
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int reset_count;
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struct timer_list start_timer;
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int setup;
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int pcap_fd;
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int udp_reset_timeout;
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struct mtp_link_set *link_set;
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struct mtp_link_set *m2ua_set;
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const char *token;
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/* mgcp messgaes */
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struct write_queue mgcp_agent;
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/* udp code */
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struct mtp_udp_data udp_data;
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int dpc;
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int opc;
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int sccp_opc;
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int isup_opc;
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int src_port;
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int udp_port;
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char *udp_ip;
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int once;
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/* the network header to use */
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int ni_ni;
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int ni_spare;
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/* LAC of the cell */
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struct gsm48_loc_area_id lai;
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uint16_t mcc;
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uint16_t mnc;
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uint16_t lac;
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int forward_only;
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};
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/* bsc related functions */
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void release_bsc_resources(struct bsc_data *bsc);
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void mtp_linkset_down(struct mtp_link_set *);
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void mtp_linkset_up(struct mtp_link_set *);
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/* msc related functions */
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int msc_init(struct bsc_data *bsc, int mgcp);
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void msc_send_rlc(struct bsc_data *bsc, struct sccp_source_reference *src, struct sccp_source_reference *dest);
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void msc_send_reset(struct bsc_data *bsc);
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void msc_send_msg(struct bsc_data *bsc, int rc, struct sccp_parse_result *, struct msgb *msg);
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void msc_send_direct(struct bsc_data *bsc, struct msgb *msg);
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void msc_close_connection(struct bsc_data *data);
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/* connection tracking and action */
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void update_con_state(struct mtp_link_set *link, int rc, struct sccp_parse_result *result, struct msgb *msg, int from_msc, int sls);
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unsigned int sls_for_src_ref(struct sccp_source_reference *ref);
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/* udp init */
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int link_global_init(struct mtp_udp_data *data, char *dest_ip, int src_port);
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int link_udp_init(struct mtp_udp_link *data, const char *dest_ip, int port);
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int link_init(struct bsc_data *bsc);
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int link_shutdown_all(struct mtp_link_set *);
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int link_reset_all(struct mtp_link_set *);
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int link_clear_all(struct mtp_link_set *);
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/* MGCP */
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void mgcp_forward(struct bsc_data *bsc, const uint8_t *data, unsigned int length);
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#endif
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