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Diffstat (limited to 'src/libbsc/rest_octets.c')
-rw-r--r--src/libbsc/rest_octets.c860
1 files changed, 0 insertions, 860 deletions
diff --git a/src/libbsc/rest_octets.c b/src/libbsc/rest_octets.c
deleted file mode 100644
index fdab70a0c..000000000
--- a/src/libbsc/rest_octets.c
+++ /dev/null
@@ -1,860 +0,0 @@
-/* GSM Mobile Radio Interface Layer 3 messages on the A-bis interface,
- * rest octet handling according to
- * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */
-
-/* (C) 2009 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 Affero General Public License as published by
- * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#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 <osmocom/gsm/bitvec_gsm.h>
-#include <openbsc/rest_octets.h>
-#include <openbsc/arfcn_range_encode.h>
-#include <openbsc/system_information.h>
-
-/* generate SI1 rest octets */
-int rest_octets_si1(uint8_t *data, uint8_t *nch_pos, int is1800_net)
-{
- struct bitvec bv;
-
- memset(&bv, 0, sizeof(bv));
- bv.data = data;
- bv.data_len = 1;
-
- if (nch_pos) {
- bitvec_set_bit(&bv, H);
- bitvec_set_uint(&bv, *nch_pos, 5);
- } else
- bitvec_set_bit(&bv, L);
-
- if (is1800_net)
- bitvec_set_bit(&bv, L);
- else
- bitvec_set_bit(&bv, H);
-
- bitvec_spare_padding(&bv, 6);
- 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, struct gsm_bts *bts, uint8_t budget)
-{
- const struct osmo_earfcn_si2q *e = &bts->si_common.si2quater_neigh_list;
- unsigned i, skip = 0;
- size_t offset = bts->e_offset;
- uint8_t rem = budget - 6, earfcn_budget; /* account for mandatory stop bit and THRESH_E-UTRAN_high */
-
- if (budget <= 6)
- return;
-
- OSMO_ASSERT(budget <= SI2Q_MAX_LEN);
-
- /* first we have to properly adjust budget requirements */
- if (e->prio_valid) /* E-UTRAN_PRIORITY: 3GPP TS 45.008*/
- rem -= 4;
- else
- rem--;
-
- if (e->thresh_lo_valid) /* THRESH_E-UTRAN_low: */
- rem -= 6;
- else
- rem--;
-
- if (e->qrxlm_valid) /* E-UTRAN_QRXLEVMIN: */
- rem -= 6;
- else
- rem--;
-
- /* now we can proceed with actually adding EARFCNs within adjusted budget limit */
- for (i = 0; i < e->length; i++) {
- if (e->arfcn[i] != OSMO_EARFCN_INVALID) {
- if (skip < offset) {
- skip++; /* ignore EARFCNs added on previous calls */
- } else {
- earfcn_budget = 17; /* compute budget per-EARFCN */
- if (OSMO_EARFCN_MEAS_INVALID == e->meas_bw[i])
- earfcn_budget++;
- else
- earfcn_budget += 4;
-
- if (rem - earfcn_budget < 0)
- break;
- else {
- bts->e_offset++;
- rem -= earfcn_budget;
- 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);
-
- /* Note: we don't support different EARFCN arrays each with different priority, threshold etc. */
-
- 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 void append_earfcn(struct bitvec *bv, struct gsm_bts *bts, uint8_t budget)
-{
- int rem = budget - 25;
- if (rem <= 0)
- return;
-
- OSMO_ASSERT(budget <= SI2Q_MAX_LEN);
-
- /* 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);
-
- /* N. B: 25 bits are set in append_earfcn() - keep it in sync with budget adjustment below: */
- append_eutran_neib_cell(bv, bts, rem);
-
- /* 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);
-}
-
-static inline int f0_helper(int *sc, size_t length, uint8_t *chan_list)
-{
- int w[RANGE_ENC_MAX_ARFCNS] = { 0 };
-
- return range_encode(ARFCN_RANGE_1024, sc, length, w, 0, chan_list);
-}
-
-/* Estimate how many bits it'll take to append single FDD UARFCN */
-static inline int append_utran_fdd_length(uint16_t u, int *sc, size_t sc_len, size_t length)
-{
- uint8_t chan_list[16] = { 0 };
- int tmp[sc_len], f0;
-
- memcpy(tmp, sc, sizeof(tmp));
-
- f0 = f0_helper(tmp, length, chan_list);
- if (f0 < 0)
- return f0;
-
- return 21 + range1024_p(length);
-}
-
-/* Append single FDD UARFCN */
-static inline int append_utran_fdd(struct bitvec *bv, uint16_t u, int *sc, size_t length)
-{
- uint8_t chan_list[16] = { 0 };
- int f0 = f0_helper(sc, length, chan_list);
-
- if (f0 < 0)
- return f0;
-
- /* Repeated UTRAN FDD Neighbour Cells */
- bitvec_set_bit(bv, 1);
-
- /* FDD-ARFCN */
- bitvec_set_bit(bv, 0);
- bitvec_set_uint(bv, u, 14);
-
- /* FDD_Indic0: parameter value '0000000000' is a member of the set? */
- bitvec_set_bit(bv, f0);
- /* NR_OF_FDD_CELLS */
- bitvec_set_uint(bv, length, 5);
-
- f0 = bv->cur_bit;
- bitvec_add_range1024(bv, (struct gsm48_range_1024 *)chan_list);
- bv->cur_bit = f0 + range1024_p(length);
-
- return 21 + range1024_p(length);
-}
-
-/* Append multiple FDD UARFCNs */
-static inline int append_uarfcns(struct bitvec *bv, struct gsm_bts *bts, uint8_t budget)
-{
- const uint16_t *u = bts->si_common.data.uarfcn_list, *sc = bts->si_common.data.scramble_list;
- int i, j, k, rc, st = 0, a[bts->si_common.uarfcn_length];
- uint16_t cu = u[bts->u_offset]; /* caller ensures that length is positive */
- uint8_t rem = budget - 7, offset_diff; /* account for constant bits right away */
-
- OSMO_ASSERT(budget <= SI2Q_MAX_LEN);
-
- if (budget <= 7)
- return -ENOMEM;
-
- /* 3G Neighbour Cell Description */
- bitvec_set_bit(bv, 1);
- /* No Index_Start_3G */
- bitvec_set_bit(bv, 0);
- /* No Absolute_Index_Start_EMR */
- bitvec_set_bit(bv, 0);
-
- /* UTRAN FDD Description */
- bitvec_set_bit(bv, 1);
- /* No Bandwidth_FDD */
- bitvec_set_bit(bv, 0);
-
- for (i = bts->u_offset; i < bts->si_common.uarfcn_length; i++) {
- offset_diff = 0;
- for (j = st, k = 0; j < i; j++) {
- a[k++] = sc[j]; /* copy corresponding SCs */
- offset_diff++; /* compute proper offset step */
- }
- if (u[i] != cu) { /* we've reached new UARFCN */
- rc = append_utran_fdd_length(cu, a, bts->si_common.uarfcn_length, k);
- if (rc < 0) { /* estimate bit length requirements */
- return rc;
- }
-
- if (rem - rc <= 0)
- break; /* we have ran out of budget in current SI2q */
- else {
- rem -= append_utran_fdd(bv, cu, a, k);
- bts->u_offset += offset_diff;
- }
- cu = u[i];
- st = i; /* update start position */
- }
- }
-
- if (rem > 22) { /* add last UARFCN not covered by previous cycle if it could possibly fit into budget */
- offset_diff = 0;
- for (i = st, k = 0; i < bts->si_common.uarfcn_length; i++) {
- a[k++] = sc[i];
- offset_diff++;
- }
- rc = append_utran_fdd_length(cu, a, bts->si_common.uarfcn_length, k);
- if (rc < 0) {
- return rc;
- }
-
- if (rem - rc >= 0) {
- rem -= append_utran_fdd(bv, cu, a, k);
- bts->u_offset += offset_diff;
- }
- }
-
- /* stop bit - end of Repeated UTRAN FDD Neighbour Cells */
- bitvec_set_bit(bv, 0);
-
- /* UTRAN TDD Description */
- bitvec_set_bit(bv, 0);
-
- return 0;
-}
-
-/* generate SI2quater rest octets: 3GPP TS 44.018 ยง 10.5.2.33b */
-int rest_octets_si2quater(uint8_t *data, struct gsm_bts *bts)
-{
- int rc;
- struct bitvec bv;
-
- if (bts->si2q_count < bts->si2q_index)
- return -EINVAL;
-
- 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);
-
- /* SI2quater_INDEX */
- bitvec_set_uint(&bv, bts->si2q_index, 4);
- /* SI2quater_COUNT */
- bitvec_set_uint(&bv, bts->si2q_count, 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);
-
- rc = SI2Q_MAX_LEN - (bv.cur_bit + 3);
- if (rc > 0 && bts->si_common.uarfcn_length - bts->u_offset > 0) {
- rc = append_uarfcns(&bv, bts, rc);
- if (rc < 0) {
- LOGP(DRR, LOGL_ERROR, "SI2quater [%u/%u]: failed to append %zu UARFCNs due to range encoding "
- "failure: %s\n",
- bts->si2q_index, bts->si2q_count, bts->si_common.uarfcn_length, strerror(-rc));
- return rc;
- }
- } 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);
-
- rc = SI2Q_MAX_LEN - bv.cur_bit;
- if (rc > 0 && si2q_earfcn_count(&bts->si_common.si2quater_neigh_list) - bts->e_offset > 0)
- append_earfcn(&bv, bts, rc);
- 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)
-{
- if (sp->present) {
- bitvec_set_bit(bv, H);
- bitvec_set_bit(bv, sp->cbq);
- bitvec_set_uint(bv, sp->cell_resel_off, 6);
- bitvec_set_uint(bv, sp->temp_offs, 3);
- bitvec_set_uint(bv, sp->penalty_time, 5);
- } else
- bitvec_set_bit(bv, L);
-}
-
-/* Append power offset to bitvec */
-static void append_power_offset(struct bitvec *bv,
- const struct gsm48_si_power_offset *po)
-{
- if (po->present) {
- bitvec_set_bit(bv, H);
- bitvec_set_uint(bv, po->power_offset, 2);
- } else
- bitvec_set_bit(bv, L);
-}
-
-/* Append GPRS indicator to bitvec */
-static void append_gprs_ind(struct bitvec *bv,
- const struct gsm48_si3_gprs_ind *gi)
-{
- if (gi->present) {
- bitvec_set_bit(bv, H);
- bitvec_set_uint(bv, gi->ra_colour, 3);
- /* 0 == SI13 in BCCH Norm, 1 == SI13 sent on BCCH Ext */
- bitvec_set_bit(bv, gi->si13_position);
- } else
- bitvec_set_bit(bv, L);
-}
-
-
-/* Generate SI3 Rest Octests (Chapter 10.5.2.34 / Table 10.4.72) */
-int rest_octets_si3(uint8_t *data, const struct gsm48_si_ro_info *si3)
-{
- struct bitvec bv;
-
- memset(&bv, 0, sizeof(bv));
- bv.data = data;
- bv.data_len = 4;
-
- /* Optional Selection Parameters */
- append_selection_params(&bv, &si3->selection_params);
-
- /* Optional Power Offset */
- append_power_offset(&bv, &si3->power_offset);
-
- /* Do we have a SI2ter on the BCCH? */
- if (si3->si2ter_indicator)
- bitvec_set_bit(&bv, H);
- else
- bitvec_set_bit(&bv, L);
-
- /* Early Classmark Sending Control */
- if (si3->early_cm_ctrl)
- bitvec_set_bit(&bv, H);
- else
- bitvec_set_bit(&bv, L);
-
- /* Do we have a SI Type 9 on the BCCH? */
- if (si3->scheduling.present) {
- bitvec_set_bit(&bv, H);
- bitvec_set_uint(&bv, si3->scheduling.where, 3);
- } else
- bitvec_set_bit(&bv, L);
-
- /* GPRS Indicator */
- append_gprs_ind(&bv, &si3->gprs_ind);
-
- /* 3G Early Classmark Sending Restriction controlled by
- * early_cm_ctrl above */
- bitvec_set_bit(&bv, H);
-
- if (si3->si2quater_indicator) {
- bitvec_set_bit(&bv, H); /* indicator struct present */
- bitvec_set_uint(&bv, 0, 1); /* message is sent on BCCH Norm */
- }
-
- bitvec_spare_padding(&bv, (bv.data_len*8)-1);
- return bv.data_len;
-}
-
-static int append_lsa_params(struct bitvec *bv,
- const struct gsm48_lsa_params *lsa_params)
-{
- /* FIXME */
- return -1;
-}
-
-/* Generate SI4 Rest Octets (Chapter 10.5.2.35) */
-int rest_octets_si4(uint8_t *data, const struct gsm48_si_ro_info *si4, int len)
-{
- struct bitvec bv;
-
- memset(&bv, 0, sizeof(bv));
- bv.data = data;
- bv.data_len = len;
-
- /* SI4 Rest Octets O */
- append_selection_params(&bv, &si4->selection_params);
- append_power_offset(&bv, &si4->power_offset);
- append_gprs_ind(&bv, &si4->gprs_ind);
-
- if (0 /* FIXME */) {
- /* H and SI4 Rest Octets S */
- bitvec_set_bit(&bv, H);
-
- /* LSA Parameters */
- if (si4->lsa_params.present) {
- bitvec_set_bit(&bv, H);
- append_lsa_params(&bv, &si4->lsa_params);
- } else
- bitvec_set_bit(&bv, L);
-
- /* Cell Identity */
- if (1) {
- bitvec_set_bit(&bv, H);
- bitvec_set_uint(&bv, si4->cell_id, 16);
- } else
- bitvec_set_bit(&bv, L);
-
- /* LSA ID Information */
- if (0) {
- bitvec_set_bit(&bv, H);
- /* FIXME */
- } else
- bitvec_set_bit(&bv, L);
- } else {
- /* L and break indicator */
- bitvec_set_bit(&bv, L);
- bitvec_set_bit(&bv, si4->break_ind ? H : L);
- }
-
- return bv.data_len;
-}
-
-
-/* GSM 04.18 ETSI TS 101 503 V8.27.0 (2006-05)
-
-<SI6 rest octets> ::=
-{L | H <PCH and NCH info>}
-{L | H <VBS/VGCS options : bit(2)>}
-{ < DTM_support : bit == L > I < DTM_support : bit == H >
-< RAC : bit (8) >
-< MAX_LAPDm : bit (3) > }
-< Band indicator >
-{ L | H < GPRS_MS_TXPWR_MAX_CCH : bit (5) > }
-<implicit spare >;
-*/
-int rest_octets_si6(uint8_t *data, bool is1800_net)
-{
- struct bitvec bv;
-
- memset(&bv, 0, sizeof(bv));
- bv.data = data;
- bv.data_len = 1;
-
- /* no PCH/NCH info */
- bitvec_set_bit(&bv, L);
- /* no VBS/VGCS options */
- bitvec_set_bit(&bv, L);
- /* no DTM_support */
- bitvec_set_bit(&bv, L);
- /* band indicator */
- if (is1800_net)
- bitvec_set_bit(&bv, L);
- else
- bitvec_set_bit(&bv, H);
- /* no GPRS_MS_TXPWR_MAX_CCH */
- bitvec_set_bit(&bv, L);
-
- bitvec_spare_padding(&bv, (bv.data_len * 8) - 1);
- return bv.data_len;
-}
-
-/* GPRS Mobile Allocation as per TS 04.60 Chapter 12.10a:
- < GPRS Mobile Allocation IE > ::=
- < HSN : bit (6) >
- { 0 | 1 < RFL number list : < RFL number list struct > > }
- { 0 < MA_LENGTH : bit (6) >
- < MA_BITMAP: bit (val(MA_LENGTH) + 1) >
- | 1 { 0 | 1 <ARFCN index list : < ARFCN index list struct > > } } ;
-
- < RFL number list struct > :: =
- < RFL_NUMBER : bit (4) >
- { 0 | 1 < RFL number list struct > } ;
- < ARFCN index list struct > ::=
- < ARFCN_INDEX : bit(6) >
- { 0 | 1 < ARFCN index list struct > } ;
- */
-static int append_gprs_mobile_alloc(struct bitvec *bv)
-{
- /* Hopping Sequence Number */
- bitvec_set_uint(bv, 0, 6);
-
- if (0) {
- /* We want to use a RFL number list */
- bitvec_set_bit(bv, 1);
- /* FIXME: RFL number list */
- } else
- bitvec_set_bit(bv, 0);
-
- if (0) {
- /* We want to use a MA_BITMAP */
- bitvec_set_bit(bv, 0);
- /* FIXME: MA_LENGTH, MA_BITMAP, ... */
- } else {
- bitvec_set_bit(bv, 1);
- if (0) {
- /* We want to provide an ARFCN index list */
- bitvec_set_bit(bv, 1);
- /* FIXME */
- } else
- bitvec_set_bit(bv, 0);
- }
- return 0;
-}
-
-static int encode_t3192(unsigned int t3192)
-{
- /* See also 3GPP TS 44.060
- Table 12.24.2: GPRS Cell Options information element details */
- if (t3192 == 0)
- return 3;
- else if (t3192 <= 80)
- return 4;
- else if (t3192 <= 120)
- return 5;
- else if (t3192 <= 160)
- return 6;
- else if (t3192 <= 200)
- return 7;
- else if (t3192 <= 500)
- return 0;
- else if (t3192 <= 1000)
- return 1;
- else if (t3192 <= 1500)
- return 2;
- else
- return -EINVAL;
-}
-
-static int encode_drx_timer(unsigned int drx)
-{
- if (drx == 0)
- return 0;
- else if (drx == 1)
- return 1;
- else if (drx == 2)
- return 2;
- else if (drx <= 4)
- return 3;
- else if (drx <= 8)
- return 4;
- else if (drx <= 16)
- return 5;
- else if (drx <= 32)
- return 6;
- else if (drx <= 64)
- return 7;
- else
- return -EINVAL;
-}
-
-/* GPRS Cell Options as per TS 04.60 Chapter 12.24
- < GPRS Cell Options IE > ::=
- < NMO : bit(2) >
- < T3168 : bit(3) >
- < T3192 : bit(3) >
- < DRX_TIMER_MAX: bit(3) >
- < ACCESS_BURST_TYPE: bit >
- < CONTROL_ACK_TYPE : bit >
- < BS_CV_MAX: bit(4) >
- { 0 | 1 < PAN_DEC : bit(3) >
- < PAN_INC : bit(3) >
- < PAN_MAX : bit(3) >
- { 0 | 1 < Extension Length : bit(6) >
- < bit (val(Extension Length) + 1
- & { < Extension Information > ! { bit ** = <no string> } } ;
- < Extension Information > ::=
- { 0 | 1 < EGPRS_PACKET_CHANNEL_REQUEST : bit >
- < BEP_PERIOD : bit(4) > }
- < PFC_FEATURE_MODE : bit >
- < DTM_SUPPORT : bit >
- <BSS_PAGING_COORDINATION: bit >
- <spare bit > ** ;
- */
-static int append_gprs_cell_opt(struct bitvec *bv,
- const struct gprs_cell_options *gco)
-{
- int t3192, drx_timer_max;
-
- t3192 = encode_t3192(gco->t3192);
- if (t3192 < 0)
- return t3192;
-
- drx_timer_max = encode_drx_timer(gco->drx_timer_max);
- if (drx_timer_max < 0)
- return drx_timer_max;
-
- bitvec_set_uint(bv, gco->nmo, 2);
-
- /* See also 3GPP TS 44.060
- Table 12.24.2: GPRS Cell Options information element details */
- bitvec_set_uint(bv, gco->t3168 / 500 - 1, 3);
-
- bitvec_set_uint(bv, t3192, 3);
- bitvec_set_uint(bv, drx_timer_max, 3);
- /* ACCESS_BURST_TYPE: Hard-code 8bit */
- bitvec_set_bit(bv, 0);
- /* CONTROL_ACK_TYPE: */
- bitvec_set_bit(bv, gco->ctrl_ack_type_use_block);
- bitvec_set_uint(bv, gco->bs_cv_max, 4);
-
- if (0) {
- /* hard-code no PAN_{DEC,INC,MAX} */
- bitvec_set_bit(bv, 0);
- } else {
- /* copied from ip.access BSC protocol trace */
- bitvec_set_bit(bv, 1);
- bitvec_set_uint(bv, 1, 3); /* DEC */
- bitvec_set_uint(bv, 1, 3); /* INC */
- bitvec_set_uint(bv, 15, 3); /* MAX */
- }
-
- if (!gco->ext_info_present) {
- /* no extension information */
- bitvec_set_bit(bv, 0);
- } else {
- /* extension information */
- bitvec_set_bit(bv, 1);
- if (!gco->ext_info.egprs_supported) {
- /* 6bit length of extension */
- bitvec_set_uint(bv, (1 + 3)-1, 6);
- /* EGPRS supported in the cell */
- bitvec_set_bit(bv, 0);
- } else {
- /* 6bit length of extension */
- bitvec_set_uint(bv, (1 + 5 + 3)-1, 6);
- /* EGPRS supported in the cell */
- bitvec_set_bit(bv, 1);
-
- /* 1bit EGPRS PACKET CHANNEL REQUEST */
- if (gco->supports_egprs_11bit_rach == 0) {
- bitvec_set_bit(bv,
- gco->ext_info.use_egprs_p_ch_req);
- } else {
- bitvec_set_bit(bv, 0);
- }
-
- /* 4bit BEP PERIOD */
- bitvec_set_uint(bv, gco->ext_info.bep_period, 4);
- }
- bitvec_set_bit(bv, gco->ext_info.pfc_supported);
- bitvec_set_bit(bv, gco->ext_info.dtm_supported);
- bitvec_set_bit(bv, gco->ext_info.bss_paging_coordination);
- }
-
- return 0;
-}
-
-static void append_gprs_pwr_ctrl_pars(struct bitvec *bv,
- const struct gprs_power_ctrl_pars *pcp)
-{
- bitvec_set_uint(bv, pcp->alpha, 4);
- bitvec_set_uint(bv, pcp->t_avg_w, 5);
- bitvec_set_uint(bv, pcp->t_avg_t, 5);
- bitvec_set_uint(bv, pcp->pc_meas_chan, 1);
- bitvec_set_uint(bv, pcp->n_avg_i, 4);
-}
-
-/* Generate SI13 Rest Octests (04.08 Chapter 10.5.2.37b) */
-int rest_octets_si13(uint8_t *data, const struct gsm48_si13_info *si13)
-{
- struct bitvec bv;
-
- memset(&bv, 0, sizeof(bv));
- bv.data = data;
- bv.data_len = 20;
-
- if (0) {
- /* No rest octets */
- bitvec_set_bit(&bv, L);
- } else {
- bitvec_set_bit(&bv, H);
- bitvec_set_uint(&bv, si13->bcch_change_mark, 3);
- bitvec_set_uint(&bv, si13->si_change_field, 4);
- if (1) {
- bitvec_set_bit(&bv, 0);
- } else {
- bitvec_set_bit(&bv, 1);
- bitvec_set_uint(&bv, si13->bcch_change_mark, 2);
- append_gprs_mobile_alloc(&bv);
- }
- if (!si13->pbcch_present) {
- /* PBCCH not present in cell */
- bitvec_set_bit(&bv, 0);
- bitvec_set_uint(&bv, si13->no_pbcch.rac, 8);
- bitvec_set_bit(&bv, si13->no_pbcch.spgc_ccch_sup);
- bitvec_set_uint(&bv, si13->no_pbcch.prio_acc_thr, 3);
- bitvec_set_uint(&bv, si13->no_pbcch.net_ctrl_ord, 2);
- append_gprs_cell_opt(&bv, &si13->cell_opts);
- append_gprs_pwr_ctrl_pars(&bv, &si13->pwr_ctrl_pars);
- } else {
- /* PBCCH present in cell */
- bitvec_set_bit(&bv, 1);
- bitvec_set_uint(&bv, si13->pbcch.psi1_rep_per, 4);
- /* PBCCH Descripiton */
- bitvec_set_uint(&bv, si13->pbcch.pb, 4);
- bitvec_set_uint(&bv, si13->pbcch.tsc, 3);
- bitvec_set_uint(&bv, si13->pbcch.tn, 3);
- switch (si13->pbcch.carrier_type) {
- case PBCCH_BCCH:
- bitvec_set_bit(&bv, 0);
- bitvec_set_bit(&bv, 0);
- break;
- case PBCCH_ARFCN:
- bitvec_set_bit(&bv, 0);
- bitvec_set_bit(&bv, 1);
- bitvec_set_uint(&bv, si13->pbcch.arfcn, 10);
- break;
- case PBCCH_MAIO:
- bitvec_set_bit(&bv, 1);
- bitvec_set_uint(&bv, si13->pbcch.maio, 6);
- break;
- }
- }
- /* 3GPP TS 44.018 Release 6 / 10.5.2.37b */
- bitvec_set_bit(&bv, H); /* added Release 99 */
- /* claim our SGSN is compatible with Release 99, as EDGE and EGPRS
- * was only added in this Release */
- bitvec_set_bit(&bv, 1);
- }
- bitvec_spare_padding(&bv, (bv.data_len*8)-1);
- return bv.data_len;
-}