src/gsm/sysinfo.c

   1 /* GSM 04.08 System Information (SI) encoding and decoding
   2  * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */
   3
   4 /* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
   5  *
   6  * All Rights Reserved
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  *
  21  */
  22
  23 #include <errno.h>
  24 #include <string.h>
  25 #include <stdio.h>
  26
  27 #include <osmocom/core/bitvec.h>
  28 #include <osmocom/core/utils.h>
  29 #include <osmocom/gsm/sysinfo.h>
  30 #include <osmocom/gsm/protocol/gsm_04_08.h>
  31 #include <osmocom/gsm/protocol/gsm_08_58.h>
  32
  33 /* verify the sizes of the system information type structs */
  34
  35 /* rest octets are not part of the struct */
  36 osmo_static_assert(sizeof(struct gsm48_system_information_type_header) == 3, _si_header_size);
  37 osmo_static_assert(sizeof(struct gsm48_rach_control) == 3, _si_rach_control);
  38 osmo_static_assert(sizeof(struct gsm48_system_information_type_1) == 22, _si1_size);
  39 osmo_static_assert(sizeof(struct gsm48_system_information_type_2) == 23, _si2_size);
  40 osmo_static_assert(sizeof(struct gsm48_system_information_type_3) == 19, _si3_size);
  41 osmo_static_assert(sizeof(struct gsm48_system_information_type_4) == 13, _si4_size);
  42
  43 /* bs11 forgot the l2 len, 0-6 rest octets */
  44 osmo_static_assert(sizeof(struct gsm48_system_information_type_5) == 18, _si5_size);
  45 osmo_static_assert(sizeof(struct gsm48_system_information_type_6) == 11, _si6_size);
  46
  47 osmo_static_assert(sizeof(struct gsm48_system_information_type_13) == 3, _si13_size);
  48
  49 static const uint8_t sitype2rsl[_MAX_SYSINFO_TYPE] = {
  50         [SYSINFO_TYPE_1]        = RSL_SYSTEM_INFO_1,
  51         [SYSINFO_TYPE_2]        = RSL_SYSTEM_INFO_2,
  52         [SYSINFO_TYPE_3]        = RSL_SYSTEM_INFO_3,
  53         [SYSINFO_TYPE_4]        = RSL_SYSTEM_INFO_4,
  54         [SYSINFO_TYPE_5]        = RSL_SYSTEM_INFO_5,
  55         [SYSINFO_TYPE_6]        = RSL_SYSTEM_INFO_6,
  56         [SYSINFO_TYPE_7]        = RSL_SYSTEM_INFO_7,
  57         [SYSINFO_TYPE_8]        = RSL_SYSTEM_INFO_8,
  58         [SYSINFO_TYPE_9]        = RSL_SYSTEM_INFO_9,
  59         [SYSINFO_TYPE_10]       = RSL_SYSTEM_INFO_10,
  60         [SYSINFO_TYPE_13]       = RSL_SYSTEM_INFO_13,
  61         [SYSINFO_TYPE_16]       = RSL_SYSTEM_INFO_16,
  62         [SYSINFO_TYPE_17]       = RSL_SYSTEM_INFO_17,
  63         [SYSINFO_TYPE_18]       = RSL_SYSTEM_INFO_18,
  64         [SYSINFO_TYPE_19]       = RSL_SYSTEM_INFO_19,
  65         [SYSINFO_TYPE_20]       = RSL_SYSTEM_INFO_20,
  66         [SYSINFO_TYPE_2bis]     = RSL_SYSTEM_INFO_2bis,
  67         [SYSINFO_TYPE_2ter]     = RSL_SYSTEM_INFO_2ter,
  68         [SYSINFO_TYPE_2quater]  = RSL_SYSTEM_INFO_2quater,
  69         [SYSINFO_TYPE_5bis]     = RSL_SYSTEM_INFO_5bis,
  70         [SYSINFO_TYPE_5ter]     = RSL_SYSTEM_INFO_5ter,
  71         [SYSINFO_TYPE_EMO]      = RSL_EXT_MEAS_ORDER,
  72         [SYSINFO_TYPE_MEAS_INFO]= RSL_MEAS_INFO,
  73 };
  74
  75 static const uint8_t rsl2sitype[256] = {
  76         [RSL_SYSTEM_INFO_1] = SYSINFO_TYPE_1,
  77         [RSL_SYSTEM_INFO_2] = SYSINFO_TYPE_2,
  78         [RSL_SYSTEM_INFO_3] = SYSINFO_TYPE_3,
  79         [RSL_SYSTEM_INFO_4] = SYSINFO_TYPE_4,
  80         [RSL_SYSTEM_INFO_5] = SYSINFO_TYPE_5,
  81         [RSL_SYSTEM_INFO_6] = SYSINFO_TYPE_6,
  82         [RSL_SYSTEM_INFO_7] = SYSINFO_TYPE_7,
  83         [RSL_SYSTEM_INFO_8] = SYSINFO_TYPE_8,
  84         [RSL_SYSTEM_INFO_9] = SYSINFO_TYPE_9,
  85         [RSL_SYSTEM_INFO_10] = SYSINFO_TYPE_10,
  86         [RSL_SYSTEM_INFO_13] = SYSINFO_TYPE_13,
  87         [RSL_SYSTEM_INFO_16] = SYSINFO_TYPE_16,
  88         [RSL_SYSTEM_INFO_17] = SYSINFO_TYPE_17,
  89         [RSL_SYSTEM_INFO_18] = SYSINFO_TYPE_18,
  90         [RSL_SYSTEM_INFO_19] = SYSINFO_TYPE_19,
  91         [RSL_SYSTEM_INFO_20] = SYSINFO_TYPE_20,
  92         [RSL_SYSTEM_INFO_2bis] = SYSINFO_TYPE_2bis,
  93         [RSL_SYSTEM_INFO_2ter] = SYSINFO_TYPE_2ter,
  94         [RSL_SYSTEM_INFO_2quater] = SYSINFO_TYPE_2quater,
  95         [RSL_SYSTEM_INFO_5bis] = SYSINFO_TYPE_5bis,
  96         [RSL_SYSTEM_INFO_5ter] = SYSINFO_TYPE_5ter,
  97         [RSL_EXT_MEAS_ORDER] = SYSINFO_TYPE_EMO,
  98         [RSL_MEAS_INFO] = SYSINFO_TYPE_MEAS_INFO,
  99 };
 100
 101 const struct value_string osmo_sitype_strs[_MAX_SYSINFO_TYPE] = {
 102         { SYSINFO_TYPE_1,       "1" },
 103         { SYSINFO_TYPE_2,       "2" },
 104         { SYSINFO_TYPE_3,       "3" },
 105         { SYSINFO_TYPE_4,       "4" },
 106         { SYSINFO_TYPE_5,       "5" },
 107         { SYSINFO_TYPE_6,       "6" },
 108         { SYSINFO_TYPE_7,       "7" },
 109         { SYSINFO_TYPE_8,       "8" },
 110         { SYSINFO_TYPE_9,       "9" },
 111         { SYSINFO_TYPE_10,      "10" },
 112         { SYSINFO_TYPE_13,      "13" },
 113         { SYSINFO_TYPE_16,      "16" },
 114         { SYSINFO_TYPE_17,      "17" },
 115         { SYSINFO_TYPE_18,      "18" },
 116         { SYSINFO_TYPE_19,      "19" },
 117         { SYSINFO_TYPE_20,      "20" },
 118         { SYSINFO_TYPE_2bis,    "2bis" },
 119         { SYSINFO_TYPE_2ter,    "2ter" },
 120         { SYSINFO_TYPE_2quater, "2quater" },
 121         { SYSINFO_TYPE_5bis,    "5bis" },
 122         { SYSINFO_TYPE_5ter,    "5ter" },
 123         { SYSINFO_TYPE_EMO,     "EMO" },
 124         { SYSINFO_TYPE_MEAS_INFO, "MI" },
 125         { 0, NULL }
 126 };
 127
 128 uint8_t osmo_sitype2rsl(enum osmo_sysinfo_type si_type)
 129 {
 130         return sitype2rsl[si_type];
 131 }
 132
 133 enum osmo_sysinfo_type osmo_rsl2sitype(uint8_t rsl_si)
 134 {
 135         return rsl2sitype[rsl_si];
 136 }