summaryrefslogtreecommitdiffstats
path: root/src/gsm/sysinfo.c
blob: e4d0ddf7b09cc9297bec280d5bb23bb264767479 (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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
/* GSM 04.08 System Information (SI) encoding and decoding
 * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */

/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
 *
 * 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, see <http://www.gnu.org/licenses/>.
 *
 */

#include <errno.h>
#include <string.h>
#include <stdio.h>

#include <osmocom/core/bitvec.h>
#include <osmocom/core/utils.h>
#include <osmocom/gsm/sysinfo.h>
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/gsm/protocol/gsm_08_58.h>

/* verify the sizes of the system information type structs */

/* rest octets are not part of the struct */
osmo_static_assert(sizeof(struct gsm48_system_information_type_header) == 3, _si_header_size);
osmo_static_assert(sizeof(struct gsm48_rach_control) == 3, _si_rach_control);
osmo_static_assert(sizeof(struct gsm48_system_information_type_1) == 22, _si1_size);
osmo_static_assert(sizeof(struct gsm48_system_information_type_2) == 23, _si2_size);
osmo_static_assert(sizeof(struct gsm48_system_information_type_3) == 19, _si3_size);
osmo_static_assert(sizeof(struct gsm48_system_information_type_4) == 13, _si4_size);

/* bs11 forgot the l2 len, 0-6 rest octets */
osmo_static_assert(sizeof(struct gsm48_system_information_type_5) == 18, _si5_size);
osmo_static_assert(sizeof(struct gsm48_system_information_type_6) == 11, _si6_size);

osmo_static_assert(sizeof(struct gsm48_system_information_type_13) == 3, _si13_size);

static const uint8_t sitype2rsl[_MAX_SYSINFO_TYPE] = {
	[SYSINFO_TYPE_1]	= RSL_SYSTEM_INFO_1,
	[SYSINFO_TYPE_2]	= RSL_SYSTEM_INFO_2,
	[SYSINFO_TYPE_3]	= RSL_SYSTEM_INFO_3,
	[SYSINFO_TYPE_4]	= RSL_SYSTEM_INFO_4,
	[SYSINFO_TYPE_5]	= RSL_SYSTEM_INFO_5,
	[SYSINFO_TYPE_6]	= RSL_SYSTEM_INFO_6,
	[SYSINFO_TYPE_7]	= RSL_SYSTEM_INFO_7,
	[SYSINFO_TYPE_8]	= RSL_SYSTEM_INFO_8,
	[SYSINFO_TYPE_9]	= RSL_SYSTEM_INFO_9,
	[SYSINFO_TYPE_10]	= RSL_SYSTEM_INFO_10,
	[SYSINFO_TYPE_13]	= RSL_SYSTEM_INFO_13,
	[SYSINFO_TYPE_16]	= RSL_SYSTEM_INFO_16,
	[SYSINFO_TYPE_17]	= RSL_SYSTEM_INFO_17,
	[SYSINFO_TYPE_18]	= RSL_SYSTEM_INFO_18,
	[SYSINFO_TYPE_19]	= RSL_SYSTEM_INFO_19,
	[SYSINFO_TYPE_20]	= RSL_SYSTEM_INFO_20,
	[SYSINFO_TYPE_2bis]	= RSL_SYSTEM_INFO_2bis,
	[SYSINFO_TYPE_2ter]	= RSL_SYSTEM_INFO_2ter,
	[SYSINFO_TYPE_2quater]	= RSL_SYSTEM_INFO_2quater,
	[SYSINFO_TYPE_5bis]	= RSL_SYSTEM_INFO_5bis,
	[SYSINFO_TYPE_5ter]	= RSL_SYSTEM_INFO_5ter,
	[SYSINFO_TYPE_EMO]	= RSL_EXT_MEAS_ORDER,
	[SYSINFO_TYPE_MEAS_INFO]= RSL_MEAS_INFO,
};

static const uint8_t rsl2sitype[256] = {
	[RSL_SYSTEM_INFO_1] = SYSINFO_TYPE_1,
	[RSL_SYSTEM_INFO_2] = SYSINFO_TYPE_2,
	[RSL_SYSTEM_INFO_3] = SYSINFO_TYPE_3,
	[RSL_SYSTEM_INFO_4] = SYSINFO_TYPE_4,
	[RSL_SYSTEM_INFO_5] = SYSINFO_TYPE_5,
	[RSL_SYSTEM_INFO_6] = SYSINFO_TYPE_6,
	[RSL_SYSTEM_INFO_7] = SYSINFO_TYPE_7,
	[RSL_SYSTEM_INFO_8] = SYSINFO_TYPE_8,
	[RSL_SYSTEM_INFO_9] = SYSINFO_TYPE_9,
	[RSL_SYSTEM_INFO_10] = SYSINFO_TYPE_10,
	[RSL_SYSTEM_INFO_13] = SYSINFO_TYPE_13,
	[RSL_SYSTEM_INFO_16] = SYSINFO_TYPE_16,
	[RSL_SYSTEM_INFO_17] = SYSINFO_TYPE_17,
	[RSL_SYSTEM_INFO_18] = SYSINFO_TYPE_18,
	[RSL_SYSTEM_INFO_19] = SYSINFO_TYPE_19,
	[RSL_SYSTEM_INFO_20] = SYSINFO_TYPE_20,
	[RSL_SYSTEM_INFO_2bis] = SYSINFO_TYPE_2bis,
	[RSL_SYSTEM_INFO_2ter] = SYSINFO_TYPE_2ter,
	[RSL_SYSTEM_INFO_2quater] = SYSINFO_TYPE_2quater,
	[RSL_SYSTEM_INFO_5bis] = SYSINFO_TYPE_5bis,
	[RSL_SYSTEM_INFO_5ter] = SYSINFO_TYPE_5ter,
	[RSL_EXT_MEAS_ORDER] = SYSINFO_TYPE_EMO,
	[RSL_MEAS_INFO] = SYSINFO_TYPE_MEAS_INFO,
};

const struct value_string osmo_sitype_strs[_MAX_SYSINFO_TYPE] = {
	{ SYSINFO_TYPE_1,	"1" },
	{ SYSINFO_TYPE_2,	"2" },
	{ SYSINFO_TYPE_3,	"3" },
	{ SYSINFO_TYPE_4,	"4" },
	{ SYSINFO_TYPE_5,	"5" },
	{ SYSINFO_TYPE_6,	"6" },
	{ SYSINFO_TYPE_7,	"7" },
	{ SYSINFO_TYPE_8,	"8" },
	{ SYSINFO_TYPE_9,	"9" },
	{ SYSINFO_TYPE_10,	"10" },
	{ SYSINFO_TYPE_13,	"13" },
	{ SYSINFO_TYPE_16,	"16" },
	{ SYSINFO_TYPE_17,	"17" },
	{ SYSINFO_TYPE_18,	"18" },
	{ SYSINFO_TYPE_19,	"19" },
	{ SYSINFO_TYPE_20,	"20" },
	{ SYSINFO_TYPE_2bis,	"2bis" },
	{ SYSINFO_TYPE_2ter,	"2ter" },
	{ SYSINFO_TYPE_2quater,	"2quater" },
	{ SYSINFO_TYPE_5bis,	"5bis" },
	{ SYSINFO_TYPE_5ter,	"5ter" },
	{ SYSINFO_TYPE_EMO,	"EMO" },
	{ SYSINFO_TYPE_MEAS_INFO, "MI" },
	{ 0, NULL }
};

/*! \brief Add pair of arfcn and measurement bandwith value to earfcn struct
 *  \param[in,out] e earfcn struct
 *  \param[in] arfcn EARFCN value, 16 bits
 *  \param[in] meas_bw measurement bandwith value
 *  \returns 0 on success, error otherwise
 */
int osmo_earfcn_add(struct earfcn *e, uint16_t arfcn, uint8_t meas_bw)
{
	size_t i;
	for (i = 0; i < e->length; i++) {
		if (OSMO_EARFCN_INVALID == e->arfcn[i]) {
			e->arfcn[i] = arfcn;
			e->meas_bw[i] = meas_bw;
			return 0;
		}
	}
	return -ENOMEM;
}

/*! \brief Delete arfcn (and corresponding measurement bandwith) from earfcn
 *  struct
 *  \param[in,out] e earfcn struct
 *  \param[in] arfcn EARFCN value, 16 bits
 *  \returns 0 on success, error otherwise
 */
int osmo_earfcn_del(struct earfcn *e, uint16_t arfcn)
{
	size_t i;
	for (i = 0; i < e->length; i++) {
		if (arfcn == e->arfcn[i]) {
			e->arfcn[i] = OSMO_EARFCN_INVALID;
			e->meas_bw[i] = OSMO_EARFCN_MEAS_INVALID;
			return 0;
		}
	}
	return -ENOENT;
}

/*! \brief Initialize earfcn struct
 *  \param[in,out] e earfcn struct
 */
void osmo_earfcn_init(struct earfcn *e)
{
	size_t i;
	for (i = 0; i < e->length; i++) {
		e->arfcn[i] = OSMO_EARFCN_INVALID;
		e->meas_bw[i] = OSMO_EARFCN_MEAS_INVALID;
	}
}

uint8_t osmo_sitype2rsl(enum osmo_sysinfo_type si_type)
{
	return sitype2rsl[si_type];
}

enum osmo_sysinfo_type osmo_rsl2sitype(uint8_t rsl_si)
{
	return rsl2sitype[rsl_si];
}