aboutsummaryrefslogtreecommitdiffstats
path: root/include/bsc_data.h
blob: a83d0893018f709e3f674ac9a303f97af44057de (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
/* Everything related to the BSC connection */
/*
 * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
 * (C) 2010 by On-Waves
 * All Rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */

#ifndef BSC_DATA_H
#define BSC_DATA_H

#include <osmocore/linuxlist.h>
#include <osmocore/select.h>
#include <osmocore/timer.h>
#include <osmocore/write_queue.h>

#include <osmocore/protocol/gsm_04_08.h>

#include <osmocom/sccp/sccp.h>


#include <netinet/in.h>
#include <arpa/inet.h>

struct bsc_data;
struct snmp_mtp_session;

/**
 * A link to the underlying MTP2 library or such
 */
struct link_data {
	union {
		struct {
			struct thread_notifier *notifier;
			struct llist_head mtp_queue;
			struct timer_list mtp_timeout;
		} c7;
		struct {
			struct write_queue write_queue;
			struct sockaddr_in remote;
			struct snmp_mtp_session *session;
			int reset_timeout;
		} udp;
	};

	int pcap_fd;
	struct bsc_data *bsc;
	struct mtp_link *the_link;

	struct timer_list link_activate;
	int forced_down;

	int (*start)(struct link_data *);
	int (*write)(struct link_data *, struct msgb *msg);
	int (*shutdown)(struct link_data *);
	int (*reset)(struct link_data *data);
	int (*clear_queue)(struct link_data *data);
};


struct bsc_data {
	/* MSC */
	char *msc_address;
	struct write_queue msc_connection;
	struct timer_list reconnect_timer;
	int first_contact;
	int msc_time;
	struct timer_list msc_timeout;
	int msc_ip_dscp;

	int ping_time;
	int pong_time;
	struct timer_list ping_timeout;
	struct timer_list pong_timeout;

	int msc_link_down;
	struct llist_head sccp_connections;
	struct timer_list reset_timeout;
	int reset_count;

	struct timer_list start_timer;

	int setup;

	struct link_data link;

	const char *token;

	/* mgcp messgaes */
	struct write_queue mgcp_agent;

	int dpc;
	int opc;
	int src_port;
	int udp_port;
	char *udp_ip;
	int once;

	/* LAC of the cell */
	struct gsm48_loc_area_id lai;
	uint16_t mcc;
	uint16_t mnc;
	uint16_t lac;
};

/* bsc related functions */
void release_bsc_resources(struct bsc_data *bsc);
void bsc_link_down(struct link_data *data);
void bsc_link_up(struct link_data *data);

/* msc related functions */
int msc_init(struct bsc_data *bsc, int mgcp);
void msc_send_rlc(struct bsc_data *bsc, struct sccp_source_reference *src, struct sccp_source_reference *dest);
void msc_send_reset(struct bsc_data *bsc);
void msc_send_msg(struct bsc_data *bsc, int rc, struct sccp_parse_result *, struct msgb *msg);
void msc_send_direct(struct bsc_data *bsc, struct msgb *msg);
void msc_clear_queue(struct bsc_data *data);
void msc_close_connection(struct bsc_data *data);

/* connection tracking and action */
void update_con_state(struct mtp_link *link, int rc, struct sccp_parse_result *result, struct msgb *msg, int from_msc, int sls);
unsigned int sls_for_src_ref(struct sccp_source_reference *ref);

/* c7 init */
int link_c7_init(struct link_data *data);

/* udp init */
int link_udp_init(struct link_data *data, int src_port, const char *dest_ip, int port);

/* MGCP */
void mgcp_forward(struct bsc_data *bsc, const uint8_t *data, unsigned int length);

#endif