132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/* Everything related to the BSC connection */
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/*
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* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
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* (C) 2010 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 General Public License as published by
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* the Free Software Foundation; either version 2 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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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 <laf0rge1/linuxlist.h>
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#include <laf0rge1/select.h>
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#include <laf0rge1/timer.h>
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#include <sccp/sccp.h>
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#include "write_queue.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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/**
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* A link to the underlying MTP2 library or such
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*/
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struct link_data {
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union {
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struct {
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struct thread_notifier *notifier;
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struct llist_head mtp_queue;
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struct timer_list mtp_timeout;
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} c7;
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struct {
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struct write_queue write_queue;
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struct sockaddr_in remote;
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struct snmp_mtp_session *session;
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int reset_timeout;
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} udp;
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};
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int pcap_fd;
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struct bsc_data *bsc;
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struct mtp_link *the_link;
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struct timer_list link_activate;
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int forced_down;
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int (*start)(struct link_data *);
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int (*write)(struct link_data *, struct msgb *msg);
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int (*shutdown)(struct link_data *);
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int (*reset)(struct link_data *data);
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int (*clear_queue)(struct link_data *data);
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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 closing;
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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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struct link_data link;
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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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};
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/* bsc related functions */
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void release_bsc_resources(struct bsc_data *bsc);
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void bsc_link_down(struct link_data *data);
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void bsc_link_up(struct link_data *data);
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/* msc related functions */
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int msc_init(struct bsc_data *bsc);
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void msc_schedule_reconnect(struct bsc_data *bsc);
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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_clear_queue(struct bsc_data *data);
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/* connection tracking and action */
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void update_con_state(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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/* c7 init */
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int link_c7_init(struct link_data *data);
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/* udp init */
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int link_udp_init(struct link_data *data, int src_port, const char *dest_ip, int port);
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/* MGCP */
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void mgcp_forward(struct bsc_data *bsc, const u_int8_t *data, unsigned int length);
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#endif
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