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authorMax <msuraev@sysmocom.de>2016-04-15 16:04:46 +0200
committerHarald Welte <laforge@gnumonks.org>2016-04-16 13:47:56 +0200
commit59a1bf3dae0d0a9e914d3c615c6aa7fc8955d7b5 (patch)
tree9cf34ba7801d64b98029dc0f2d571fe9cf88fab4 /openbsc/src
parent5fa7e36bbc100c5cec4542280ca717ae4800b316 (diff)
Add basic SI2quater support
* support for sending arbitrary static SI2quater. * vty interface for neightbor EARFCNs specific to SI2quater. * dynamic generation of SI2quater messages. * unit test for SI2quater messages. Fixes: OS#1630
Diffstat (limited to 'openbsc/src')
-rw-r--r--openbsc/src/libbsc/bsc_init.c6
-rw-r--r--openbsc/src/libbsc/bsc_vty.c71
-rw-r--r--openbsc/src/libbsc/rest_octets.c200
-rw-r--r--openbsc/src/libbsc/system_information.c23
-rw-r--r--openbsc/src/libcommon/gsm_data.c5
5 files changed, 302 insertions, 3 deletions
diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c
index fd8dd6677..fea65629f 100644
--- a/openbsc/src/libbsc/bsc_init.c
+++ b/openbsc/src/libbsc/bsc_init.c
@@ -192,9 +192,9 @@ int gsm_bts_trx_set_system_infos(struct gsm_bts_trx *trx)
return 0;
err_out:
- LOGP(DRR, LOGL_ERROR, "Cannot generate SI%s for BTS %u, most likely "
- "a problem with neighbor cell list generation\n",
- get_value_string(osmo_sitype_strs, i), bts->nr);
+ LOGP(DRR, LOGL_ERROR, "Cannot generate SI%s for BTS %u: error <%s>,"
+ "most likely a problem with neighbor cell list generation\n",
+ get_value_string(osmo_sitype_strs, i), bts->nr, strerror(-rc));
return rc;
}
diff --git a/openbsc/src/libbsc/bsc_vty.c b/openbsc/src/libbsc/bsc_vty.c
index 29f2501f8..9634508e1 100644
--- a/openbsc/src/libbsc/bsc_vty.c
+++ b/openbsc/src/libbsc/bsc_vty.c
@@ -692,6 +692,21 @@ static void config_write_bts_single(struct vty *vty, struct gsm_bts *bts)
}
}
+ for (i = 0; i < MAX_EARFCN_LIST; i++) {
+ if (bts->si_common.si2quater_neigh_list.arfcn[i] !=
+ OSMO_EARFCN_INVALID) {
+ vty_out(vty, " si2quater neighbor-list add earfcn %u threshold %u",
+ bts->si_common.si2quater_neigh_list.arfcn[i],
+ bts->si_common.si2quater_neigh_list.thresh_hi);
+ if (bts->si_common.si2quater_neigh_list.meas_bw[i] !=
+ OSMO_EARFCN_MEAS_INVALID)
+ vty_out(vty, " %u",
+ bts->si_common.si2quater_neigh_list.meas_bw[i]);
+
+ vty_out(vty, "%s", VTY_NEWLINE);
+ }
+ }
+
vty_out(vty, " codec-support fr");
if (bts->codec.hr)
vty_out(vty, " hr");
@@ -2743,6 +2758,60 @@ DEFUN(cfg_bts_neigh, cfg_bts_neigh_cmd,
return CMD_SUCCESS;
}
+DEFUN(cfg_bts_si2quater_neigh_add, cfg_bts_si2quater_neigh_add_cmd,
+ "si2quater neighbor-list add earfcn <1900-2200> threshold <0-1000> "
+ "[<0-255>]", "SI2quater Neighbor List\n"
+ "SI2quater Neighbor List\n" "Add to manual SI2quater neighbor list\n"
+ "EARFCN of neighbor\n" "EARFCN of neighbor\n" "threshold high bits\n"
+ "threshold high bits\n" "measurement bandwidth\n")
+{
+ struct gsm_bts *bts = vty->index;
+ struct osmo_earfcn_si2q *e = &bts->si_common.si2quater_neigh_list;
+ uint16_t arfcn = atoi(argv[0]);
+ uint8_t meas = OSMO_EARFCN_MEAS_INVALID, thresh = atoi(argv[1]);
+ int r;
+
+ if (3 == argc)
+ meas = atoi(argv[2]);
+
+ r = osmo_earfcn_add(e, arfcn, meas);
+
+ if (r < 0) {
+ vty_out(vty, "Unable to add arfcn %u: %s%s", arfcn, strerror(r),
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ if (e->thresh_hi && thresh != e->thresh_hi)
+ vty_out(vty, "Warning: multiple thresholds are not supported, "
+ "overriding previous threshold %u%s",
+ e->thresh_hi, VTY_NEWLINE);
+
+ e->thresh_hi = thresh;
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_bts_si2quater_neigh_del, cfg_bts_si2quater_neigh_del_cmd,
+ "si2quater neighbor-list del earfcn <1900-2200>",
+ "SI2quater Neighbor List\n"
+ "SI2quater Neighbor List\n"
+ "Delete from SI2quater manual neighbor list\n"
+ "EARFCN of neighbor\n")
+{
+ struct gsm_bts *bts = vty->index;
+ struct osmo_earfcn_si2q *e = &bts->si_common.si2quater_neigh_list;
+ uint16_t arfcn = atoi(argv[1]);
+ int r = osmo_earfcn_del(e, arfcn);
+ if (r < 0) {
+ vty_out(vty, "Unable to delete arfcn %u: %s%s", arfcn,
+ strerror(r), VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ return CMD_SUCCESS;
+}
+
DEFUN(cfg_bts_si5_neigh, cfg_bts_si5_neigh_cmd,
"si5 neighbor-list (add|del) arfcn <0-1023>",
"SI5 Neighbor List\n"
@@ -3873,6 +3942,8 @@ int bsc_vty_init(const struct log_info *cat)
install_element(BTS_NODE, &cfg_bts_neigh_mode_cmd);
install_element(BTS_NODE, &cfg_bts_neigh_cmd);
install_element(BTS_NODE, &cfg_bts_si5_neigh_cmd);
+ install_element(BTS_NODE, &cfg_bts_si2quater_neigh_add_cmd);
+ install_element(BTS_NODE, &cfg_bts_si2quater_neigh_del_cmd);
install_element(BTS_NODE, &cfg_bts_excl_rf_lock_cmd);
install_element(BTS_NODE, &cfg_bts_no_excl_rf_lock_cmd);
install_element(BTS_NODE, &cfg_bts_force_comb_si_cmd);
diff --git a/openbsc/src/libbsc/rest_octets.c b/openbsc/src/libbsc/rest_octets.c
index 83cf2ec1f..113af5ca9 100644
--- a/openbsc/src/libbsc/rest_octets.c
+++ b/openbsc/src/libbsc/rest_octets.c
@@ -24,10 +24,15 @@
#include <string.h>
#include <stdlib.h>
#include <errno.h>
+#include <stdbool.h>
+#include <openbsc/debug.h>
#include <openbsc/gsm_data.h>
#include <osmocom/core/bitvec.h>
#include <openbsc/rest_octets.h>
+#include <openbsc/arfcn_range_encode.h>
+
+#define SI2Q_MAX_LEN 160
/* generate SI1 rest octets */
int rest_octets_si1(uint8_t *data, uint8_t *nch_pos, int is1800_net)
@@ -53,6 +58,201 @@ int rest_octets_si1(uint8_t *data, uint8_t *nch_pos, int is1800_net)
return bv.data_len;
}
+/* Append Repeated E-UTRAN Neighbour Cell to bitvec:
+ * see 3GPP TS 44.018 Table 10.5.2.33b.1
+ */
+static inline void append_eutran_neib_cell(struct bitvec *bv,
+ const struct osmo_earfcn_si2q *e)
+{
+ unsigned i;
+ for (i = 0; i < e->length; i++) {
+ if (e->arfcn[i] != OSMO_EARFCN_INVALID) {
+ bitvec_set_bit(bv, 1); /* EARFCN: */
+ bitvec_set_uint(bv, e->arfcn[i], 16);
+
+ if (OSMO_EARFCN_MEAS_INVALID == e->meas_bw[i])
+ bitvec_set_bit(bv, 0);
+ else {
+ /* Measurement Bandwidth: 9.1.54 */
+ bitvec_set_bit(bv, 1);
+ bitvec_set_uint(bv, e->meas_bw[i], 3);
+ }
+ }
+ }
+
+ /* stop bit - end of EARFCN + Measurement Bandwidth sequence */
+ bitvec_set_bit(bv, 0);
+
+ if (e->prio_valid) {
+ /* E-UTRAN_PRIORITY: 3GPP TS 45.008*/
+ bitvec_set_bit(bv, 1);
+ bitvec_set_uint(bv, e->prio, 3);
+ } else
+ bitvec_set_bit(bv, 0);
+
+ /* THRESH_E-UTRAN_high */
+ bitvec_set_uint(bv, e->thresh_hi, 5);
+
+ if (e->thresh_lo_valid) {
+ /* THRESH_E-UTRAN_low: */
+ bitvec_set_bit(bv, 1);
+ bitvec_set_uint(bv, e->thresh_lo, 5);
+ } else
+ bitvec_set_bit(bv, 0);
+
+ if (e->qrxlm_valid) {
+ /* E-UTRAN_QRXLEVMIN: */
+ bitvec_set_bit(bv, 1);
+ bitvec_set_uint(bv, e->qrxlm, 5);
+ } else
+ bitvec_set_bit(bv, 0);
+}
+
+static inline int append_earfcn_size(const struct osmo_earfcn_si2q *e)
+{
+ if (!e)
+ return -EFAULT;
+ /* account for all the constant bits */
+ return 25 + osmo_earfcn_bit_size(e);
+}
+
+static inline void append_earfcn(struct bitvec *bv,
+ const struct osmo_earfcn_si2q *e)
+{
+ /* Additions in Rel-5: */
+ bitvec_set_bit(bv, H);
+ /* No 3G Additional Measurement Param. Descr. */
+ bitvec_set_bit(bv, 0);
+ /* No 3G ADDITIONAL MEASUREMENT Param. Descr. 2 */
+ bitvec_set_bit(bv, 0);
+ /* Additions in Rel-6: */
+ bitvec_set_bit(bv, H);
+ /* 3G_CCN_ACTIVE */
+ bitvec_set_bit(bv, 0);
+ /* Additions in Rel-7: */
+ bitvec_set_bit(bv, H);
+ /* No 700_REPORTING_OFFSET */
+ bitvec_set_bit(bv, 0);
+ /* No 810_REPORTING_OFFSET */
+ bitvec_set_bit(bv, 0);
+ /* Additions in Rel-8: */
+ bitvec_set_bit(bv, H);
+
+ /* Priority and E-UTRAN Parameters Description */
+ bitvec_set_bit(bv, 1);
+
+ /* No Serving Cell Priority Parameters Descr. */
+ bitvec_set_bit(bv, 0);
+ /* No 3G Priority Parameters Description */
+ bitvec_set_bit(bv, 0);
+ /* E-UTRAN Parameters Description */
+ bitvec_set_bit(bv, 1);
+
+ /* E-UTRAN_CCN_ACTIVE */
+ bitvec_set_bit(bv, 0);
+ /* E-UTRAN_Start: 9.1.54 */
+ bitvec_set_bit(bv, 1);
+ /* E-UTRAN_Stop: 9.1.54 */
+ bitvec_set_bit(bv, 1);
+
+ /* No E-UTRAN Measurement Parameters Descr. */
+ bitvec_set_bit(bv, 0);
+ /* No GPRS E-UTRAN Measurement Param. Descr. */
+ bitvec_set_bit(bv, 0);
+
+ /* Note: each of next 3 "repeated" structures might be repeated any
+ (0, 1, 2...) times - we only support 1 and 0 */
+
+ /* Repeated E-UTRAN Neighbour Cells */
+ bitvec_set_bit(bv, 1);
+
+ /* Note: we don't support different EARFCN arrays each with different
+ priority, threshold etc. */
+ append_eutran_neib_cell(bv, e);
+
+ /* stop bit - end of Repeated E-UTRAN Neighbour Cells sequence: */
+ bitvec_set_bit(bv, 0);
+
+ /* Note: following 2 repeated structs are not supported ATM */
+ /* stop bit - end of Repeated E-UTRAN Not Allowed Cells sequence: */
+ bitvec_set_bit(bv, 0);
+ /* stop bit - end of Repeated E-UTRAN PCID to TA mapping sequence: */
+ bitvec_set_bit(bv, 0);
+
+ /* Priority and E-UTRAN Parameters Description ends here */
+ /* No 3G CSG Description */
+ bitvec_set_bit(bv, 0);
+ /* No E-UTRAN CSG Description */
+ bitvec_set_bit(bv, 0);
+ /* No Additions in Rel-9: */
+ bitvec_set_bit(bv, L);
+}
+
+/* generate SI2quater rest octets: 3GPP TS 44.018 ยง 10.5.2.33b */
+int rest_octets_si2quater(uint8_t *data, const struct osmo_earfcn_si2q *e,
+ bool uarfcn, bool earfcn)
+{
+ int rc;
+ struct bitvec bv;
+ bv.data = data;
+ bv.data_len = 20;
+ bitvec_zero(&bv);
+
+ /* BA_IND */
+ bitvec_set_bit(&bv, 1);
+ /* 3G_BA_IND */
+ bitvec_set_bit(&bv, 1);
+ /* MP_CHANGE_MARK */
+ bitvec_set_bit(&bv, 0);
+
+ /* we do not support multiple si2quater messages at the moment: */
+ /* SI2quater_INDEX */
+ bitvec_set_uint(&bv, 0, 4);
+ /* SI2quater_COUNT */
+ bitvec_set_uint(&bv, 0, 4);
+
+ /* No Measurement_Parameters Description */
+ bitvec_set_bit(&bv, 0);
+ /* No GPRS_Real Time Difference Description */
+ bitvec_set_bit(&bv, 0);
+ /* No GPRS_BSIC Description */
+ bitvec_set_bit(&bv, 0);
+ /* No GPRS_REPORT PRIORITY Description */
+ bitvec_set_bit(&bv, 0);
+ /* No GPRS_MEASUREMENT_Parameters Description */
+ bitvec_set_bit(&bv, 0);
+ /* No NC Measurement Parameters */
+ bitvec_set_bit(&bv, 0);
+ /* No extension (length) */
+ bitvec_set_bit(&bv, 0);
+
+ if (uarfcn) {
+
+ } else { /* No 3G Neighbour Cell Description */
+ bitvec_set_bit(&bv, 0);
+ }
+
+ /* No 3G Measurement Parameters Description */
+ bitvec_set_bit(&bv, 0);
+ /* No GPRS_3G_MEASUREMENT Parameters Descr. */
+ bitvec_set_bit(&bv, 0);
+
+ if (earfcn) {
+ rc = append_earfcn_size(e);
+ if (rc < 0)
+ return rc;
+ if (rc + bv.cur_bit > SI2Q_MAX_LEN)
+ return -ENOMEM;
+ append_earfcn(&bv, e);
+ } else {
+ /* No Additions in Rel-5: */
+ bitvec_set_bit(&bv, L);
+ }
+
+ bitvec_spare_padding(&bv, (bv.data_len * 8) - 1);
+ return bv.data_len;
+}
+
/* Append selection parameters to bitvec */
static void append_selection_params(struct bitvec *bv,
const struct gsm48_si_selection_params *sp)
diff --git a/openbsc/src/libbsc/system_information.c b/openbsc/src/libbsc/system_information.c
index 5490c8361..43a492af1 100644
--- a/openbsc/src/libbsc/system_information.c
+++ b/openbsc/src/libbsc/system_information.c
@@ -494,6 +494,28 @@ static int generate_si2ter(uint8_t *output, struct gsm_bts *bts)
return sizeof(*si2t);
}
+static int generate_si2quater(uint8_t *output, struct gsm_bts *bts)
+{
+ int rc;
+ struct gsm48_system_information_type_2quater *si2q =
+ (struct gsm48_system_information_type_2quater *) output;
+
+ memset(si2q, GSM_MACBLOCK_PADDING, GSM_MACBLOCK_LEN);
+
+ si2q->header.l2_plen = GSM48_LEN2PLEN(22);
+ si2q->header.rr_protocol_discriminator = GSM48_PDISC_RR;
+ si2q->header.skip_indicator = 0;
+ si2q->header.system_information = GSM48_MT_RR_SYSINFO_2quater;
+
+ rc = rest_octets_si2quater(si2q->rest_octets,
+ &bts->si_common.si2quater_neigh_list, false,
+ true);
+ if (rc < 0)
+ return rc;
+
+ return sizeof(*si2q) + rc;
+}
+
static struct gsm48_si_ro_info si_info = {
.selection_params = {
.present = 0,
@@ -831,6 +853,7 @@ static const gen_si_fn_t gen_si_fn[_MAX_SYSINFO_TYPE] = {
[SYSINFO_TYPE_2] = &generate_si2,
[SYSINFO_TYPE_2bis] = &generate_si2bis,
[SYSINFO_TYPE_2ter] = &generate_si2ter,
+ [SYSINFO_TYPE_2quater] = &generate_si2quater,
[SYSINFO_TYPE_3] = &generate_si3,
[SYSINFO_TYPE_4] = &generate_si4,
[SYSINFO_TYPE_5] = &generate_si5,
diff --git a/openbsc/src/libcommon/gsm_data.c b/openbsc/src/libcommon/gsm_data.c
index 16035edcc..242c014db 100644
--- a/openbsc/src/libcommon/gsm_data.c
+++ b/openbsc/src/libcommon/gsm_data.c
@@ -315,6 +315,11 @@ struct gsm_bts *gsm_bts_alloc_register(struct gsm_network *net, enum gsm_bts_typ
bts->neigh_list_manual_mode = 0;
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.si2quater_neigh_list.arfcn = bts->si_common.data.earfcn_list;
+ bts->si_common.si2quater_neigh_list.meas_bw = bts->si_common.data.meas_bw_list;
+ bts->si_common.si2quater_neigh_list.length = MAX_EARFCN_LIST;
+ bts->si_common.si2quater_neigh_list.thresh_hi = 0;
+ osmo_earfcn_init(&bts->si_common.si2quater_neigh_list);
bts->si_common.neigh_list.data = bts->si_common.data.neigh_list;
bts->si_common.neigh_list.data_len =
sizeof(bts->si_common.data.neigh_list);