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-rw-r--r--openbsc/src/bsc_init.c329
1 files changed, 52 insertions, 277 deletions
diff --git a/openbsc/src/bsc_init.c b/openbsc/src/bsc_init.c
index 153e024e4..d21f71a0c 100644
--- a/openbsc/src/bsc_init.c
+++ b/openbsc/src/bsc_init.c
@@ -28,6 +28,7 @@
#include <openbsc/debug.h>
#include <openbsc/misdn.h>
#include <openbsc/telnet_interface.h>
+#include <openbsc/system_information.h>
#include <openbsc/paging.h>
#include <openbsc/signal.h>
#include <openbsc/talloc.h>
@@ -37,7 +38,6 @@ extern struct gsm_network *bsc_gsmnet;
extern int ipacc_rtp_direct;
static void patch_nm_tables(struct gsm_bts *bts);
-static void patch_si_tables(struct gsm_bts *bts);
/* The following definitions are for OM and NM packets that we cannot yet
* generate by code but we just pass on */
@@ -667,219 +667,42 @@ int bsc_shutdown_net(struct gsm_network *net)
return 0;
}
-struct bcch_info {
- u_int8_t type;
- u_int8_t len;
- const u_int8_t *data;
-};
-
-/*
-SYSTEM INFORMATION TYPE 1
- Cell channel description
- Format-ID bit map 0
- CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
- RACH Control Parameters
- maximum 7 retransmissions
- 8 slots used to spread transmission
- cell not barred for access
- call reestablishment not allowed
- Access Control Class = 0000
-*/
-static u_int8_t si1[] = {
- /* header */0x55, 0x06, 0x19,
- /* ccdesc */0x04 /*0x00*/, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /*0x01*/,
- /* rach */0xD5, 0x04, 0x00,
- /* s1 reset*/0x2B
-};
-
-/*
- SYSTEM INFORMATION TYPE 2
- Neighbour Cells Description
- EXT-IND: Carries the complete BA
- BA-IND = 0
- Format-ID bit map 0
- CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- NCC permitted (NCC) = FF
- RACH Control Parameters
- maximum 7 retransmissions
- 8 slots used to spread transmission
- cell not barred for access
- call reestablishment not allowed
- Access Control Class = 0000
-*/
-static u_int8_t si2[] = {
- /* header */0x59, 0x06, 0x1A,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- /* ncc */0xFF,
- /* rach*/0xD5, 0x04, 0x00
-};
-
-/*
-SYSTEM INFORMATION TYPE 3
- Cell identity = 00001 (1h)
- Location area identification
- Mobile Country Code (MCC): 001
- Mobile Network Code (MNC): 01
- Location Area Code (LAC): 00001 (1h)
- Control Channel Description
- Attach-detach: MSs in the cell are not allowed to apply IMSI attach /detach
- 0 blocks reserved for access grant
- 1 channel used for CCCH, with SDCCH
- 5 multiframes period for PAGING REQUEST
- Time-out T3212 = 0
- Cell Options BCCH
- Power control indicator: not set
- MSs shall not use uplink DTX
- Radio link timeout = 36
- Cell Selection Parameters
- Cell reselect hysteresis = 6 dB RXLEV hysteresis for LA re-selection
- max.TX power level MS may use for CCH = 2 <- according to GSM05.05 39dBm (max)
- Additional Reselect Parameter Indication (ACS) = only SYSTEM INFO 4: The SI rest octets, if present, shall be used to derive the value of PI and possibly C2 parameters
- Half rate support (NECI): New establishment causes are not supported
- min.RX signal level for MS = 0
- RACH Control Parameters
- maximum 7 retransmissions
- 8 slots used to spread transmission
- cell not barred for access
- call reestablishment not allowed
- Access Control Class = 0000
- SI 3 Rest Octets (not present)
-*/
-static u_int8_t si3[] = {
- /* header */0x49, 0x06, 0x1B,
- /* cell */0x00, 0x01,
- /* lai */0x00, 0xF1, 0x10, 0x00, 0x01,
- /* desc */0x01, 0x03, 0x00,
- /* option*/0x28,
- /* selection*/0x62, 0x00,
- /* rach */0xD5, 0x04, 0x00,
- /* rest */ 0x2B, 0x2B, 0x2B, 0x2B
-};
-
-/*
-SYSTEM INFORMATION TYPE 4
- Location area identification
- Mobile Country Code (MCC): 001
- Mobile Network Code (MNC): 01
- Location Area Code (LAC): 00001 (1h)
- Cell Selection Parameters
- Cell reselect hysteresis = 6 dB RXLEV hysteresis for LA re-selection
- max.TX power level MS may use for CCH = 2
- Additional Reselect Parameter Indication (ACS) = only SYSTEM INFO 4: The SI rest octets, if present, shall be used to derive the value of PI and possibly C2 parameters
- Half rate support (NECI): New establishment causes are not supported
- min.RX signal level for MS = 0
- RACH Control Parameters
- maximum 7 retransmissions
- 8 slots used to spread transmission
- cell not barred for access
- call reestablishment not allowed
- Access Control Class = 0000
- CBCH Channel Description
- Type = SDCCH/4[2]
- Timeslot Number: 0
- Training Sequence Code: 7h
- ARFCN: 1
- SI Rest Octets (not present)
-*/
-static u_int8_t si4[] = {
- /* header */0x41, 0x06, 0x1C,
- /* lai */0x00, 0xF1, 0x10, 0x00, 0x01,
- /* sel */0x62, 0x00,
- /* rach*/0xD5, 0x04, 0x00,
- /* cbch chan desc */ 0x64, 0x30, 0xE0, HARDCODED_ARFCN/*0x01*/,
- /* rest octets */ 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B
-};
-
-/*
- SYSTEM INFORMATION TYPE 5
- Neighbour Cells Description
- EXT-IND: Carries the complete BA
- BA-IND = 0
- Format-ID bit map 0
- CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-*/
-
-static u_int8_t si5[] = {
- /* header without l2 len*/0x06, 0x1D,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-};
-
-// SYSTEM INFORMATION TYPE 6
-
-/*
-SACCH FILLING
- System Info Type: SYSTEM INFORMATION 6
- L3 Information (Hex): 06 1E 00 01 xx xx 10 00 01 28 FF
-
-SYSTEM INFORMATION TYPE 6
- Cell identity = 00001 (1h)
- Location area identification
- Mobile Country Code (MCC): 001
- Mobile Network Code (MNC): 01
- Location Area Code (LAC): 00001 (1h)
- Cell Options SACCH
- Power control indicator: not set
- MSs shall not use uplink DTX on a TCH-F. MS shall not use uplink DTX on TCH-H.
- Radio link timeout = 36
- NCC permitted (NCC) = FF
-*/
-
-static u_int8_t si6[] = {
- /* header */0x06, 0x1E,
- /* cell id*/ 0x00, 0x01,
- /* lai */ 0x00, 0xF1, 0x10, 0x00, 0x01,
- /* options */ 0x28,
- /* ncc */ 0xFF,
-};
-
-
-
-static const struct bcch_info bcch_infos[] = {
- {
- .type = RSL_SYSTEM_INFO_1,
- .len = sizeof(si1),
- .data = si1,
- }, {
- .type = RSL_SYSTEM_INFO_2,
- .len = sizeof(si2),
- .data = si2,
- }, {
- .type = RSL_SYSTEM_INFO_3,
- .len = sizeof(si3),
- .data = si3,
- }, {
- .type = RSL_SYSTEM_INFO_4,
- .len = sizeof(si4),
- .data = si4,
- },
-};
-
-static_assert(sizeof(si1) == sizeof(struct gsm48_system_information_type_1), type1)
-static_assert(sizeof(si2) == sizeof(struct gsm48_system_information_type_2), type2)
-static_assert(sizeof(si3) == sizeof(struct gsm48_system_information_type_3), type3)
-static_assert(sizeof(si4) >= sizeof(struct gsm48_system_information_type_4), type4)
-static_assert(sizeof(si5) == sizeof(struct gsm48_system_information_type_5), type5)
-static_assert(sizeof(si6) >= sizeof(struct gsm48_system_information_type_6), type6)
-
/* set all system information types */
static int set_system_infos(struct gsm_bts_trx *trx)
{
- int i;
+ int i, rc;
+ u_int8_t si_tmp[23];
if (trx == trx->bts->c0) {
- for (i = 0; i < ARRAY_SIZE(bcch_infos); i++) {
- rsl_bcch_info(trx, bcch_infos[i].type,
- bcch_infos[i].data,
- bcch_infos[i].len);
+ for (i = 1; i <= 4; i++) {
+ rc = gsm_generate_si(si_tmp, trx->bts, i);
+ if (rc < 0)
+ goto err_out;
+ rsl_bcch_info(trx, i, si_tmp, sizeof(si_tmp));
}
}
- rsl_sacch_filling(trx, RSL_SYSTEM_INFO_5, si5, sizeof(si5));
- rsl_sacch_filling(trx, RSL_SYSTEM_INFO_6, si6, sizeof(si6));
+#ifdef GPRS
+ rc = gsm_generate_si(si_tmp, trx->bts, RSL_SYSTEM_INFO_13);
+ if (rc < 0)
+ goto err_out;
+ rsl_bcch_info(trx, RSL_SYSTEM_INFO_13, si_tmp, rc);
+#endif
+ rc = gsm_generate_si(si_tmp, trx->bts, 5);
+ if (rc < 0)
+ goto err_out;
+ rsl_sacch_filling(trx, RSL_SYSTEM_INFO_5, si_tmp, rc);
+
+ rc = gsm_generate_si(si_tmp, trx->bts, 6);
+ if (rc < 0)
+ goto err_out;
+ rsl_sacch_filling(trx, RSL_SYSTEM_INFO_6, si_tmp, rc);
return 0;
+err_out:
+ fprintf(stderr, "Cannot generate SI for BTS %u, most likely "
+ "a problem with neighbor cell list generation\n",
+ trx->bts->nr);
+ return rc;
}
/*
@@ -913,81 +736,12 @@ static void patch_nm_tables(struct gsm_bts *bts)
nanobts_attr_radio[1] = bts->c0->max_power_red / 2;
}
-/*
- * Patch the various SYSTEM INFORMATION tables to update
- * the LAI
- */
-static void patch_si_tables(struct gsm_bts *bts)
-{
- u_int8_t arfcn_low = bts->c0->arfcn & 0xff;
- u_int8_t arfcn_high = (bts->c0->arfcn >> 8) & 0x0f;
-
- /* covert the raw packet to the struct */
- struct gsm48_system_information_type_1 *type_1 =
- (struct gsm48_system_information_type_1*)&si1;
- struct gsm48_system_information_type_2 *type_2 =
- (struct gsm48_system_information_type_2*)&si2;
- struct gsm48_system_information_type_3 *type_3 =
- (struct gsm48_system_information_type_3*)&si3;
- struct gsm48_system_information_type_4 *type_4 =
- (struct gsm48_system_information_type_4*)&si4;
- struct gsm48_system_information_type_6 *type_6 =
- (struct gsm48_system_information_type_6*)&si6;
- struct gsm48_loc_area_id lai;
-
- gsm0408_generate_lai(&lai, bts->network->country_code,
- bts->network->network_code,
- bts->location_area_code);
-
- /* assign the MCC and MNC */
- type_3->lai = lai;
- type_4->lai = lai;
- type_6->lai = lai;
-
- /* set the CI */
- type_3->cell_identity = htons(bts->cell_identity);
- type_6->cell_identity = htons(bts->cell_identity);
-
- type_4->data[2] &= 0xf0;
- type_4->data[2] |= arfcn_high;
- type_4->data[3] = arfcn_low;
-
- /* patch Control Channel Description 10.5.2.11 */
- type_3->control_channel_desc = bts->chan_desc;
-
- /* patch TSC */
- si4[15] &= ~0xe0;
- si4[15] |= (bts->tsc & 7) << 5;
-
- /* patch MS max power for CCH */
- type_4->cell_sel_par.ms_txpwr_max_ccch =
- ms_pwr_ctl_lvl(bts->band, bts->ms_max_power);
-
- /* Set NECI to influence channel request */
- type_3->cell_sel_par.neci = bts->network->neci;
- type_4->cell_sel_par.neci = bts->network->neci;
-
- if (bts->cell_barred) {
- type_1->rach_control.cell_bar = 1;
- type_2->rach_control.cell_bar = 1;
- type_3->rach_control.cell_bar = 1;
- type_4->rach_control.cell_bar = 1;
- } else {
- type_1->rach_control.cell_bar = 0;
- type_2->rach_control.cell_bar = 0;
- type_3->rach_control.cell_bar = 0;
- type_4->rach_control.cell_bar = 0;
- }
-}
-
-
static void bootstrap_rsl(struct gsm_bts_trx *trx)
{
fprintf(stdout, "bootstrapping RSL for BTS/TRX (%u/%u) "
"using MCC=%u MNC=%u BSIC=%u TSC=%u\n",
trx->bts->nr, trx->nr, bsc_gsmnet->country_code,
bsc_gsmnet->network_code, trx->bts->bsic, trx->bts->tsc);
- patch_si_tables(trx->bts);
set_system_infos(trx);
}
@@ -1042,11 +796,32 @@ static int bootstrap_bts(struct gsm_bts *bts)
}
/* Control Channel Description */
- bts->chan_desc.att = 1;
- bts->chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_1_C;
- bts->chan_desc.bs_pa_mfrms = RSL_BS_PA_MFRMS_5;
+ bts->si_common.chan_desc.att = 1;
+ bts->si_common.chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_1_C;
+ bts->si_common.chan_desc.bs_pa_mfrms = RSL_BS_PA_MFRMS_5;
+ if (bts->cell_barred)
+ bts->si_common.rach_control.cell_bar = 1;
/* T3212 is set from vty/config */
+ /* some defaults for our system information */
+ bts->si_common.rach_control.re = 1; /* no re-establishment */
+ bts->si_common.rach_control.tx_integer = 5; /* 8 slots spread */
+ bts->si_common.rach_control.max_trans = 3; /* 7 retransmissions */
+ bts->si_common.rach_control.t2 = 4; /* no emergency calls */
+
+ bts->si_common.cell_options.radio_link_timeout = 2; /* 12 */
+ bts->si_common.cell_options.dtx = 2; /* MS shall not use upplink DTX */
+ bts->si_common.cell_options.pwrc = 0; /* PWRC not set */
+
+ bts->si_common.cell_sel_par.ms_txpwr_max_ccch =
+ ms_pwr_ctl_lvl(bts->band, bts->ms_max_power);
+ bts->si_common.cell_sel_par.cell_resel_hyst = 2; /* 4 dB */
+ bts->si_common.cell_sel_par.rxlev_acc_min = 0;
+ bts->si_common.cell_sel_par.acs = 0;
+ bts->si_common.cell_sel_par.neci = bts->network->neci;
+
+ bts->si_common.ncc_permitted = 0xff;
+
paging_init(bts);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-19 23:09:55 +0000