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-rw-r--r--src/libbsc/gsm_04_08_utils.c632
1 files changed, 0 insertions, 632 deletions
diff --git a/src/libbsc/gsm_04_08_utils.c b/src/libbsc/gsm_04_08_utils.c
deleted file mode 100644
index 7c5e0e97a..000000000
--- a/src/libbsc/gsm_04_08_utils.c
+++ /dev/null
@@ -1,632 +0,0 @@
-/* GSM Mobile Radio Interface Layer 3 messages on the A-bis interface
- * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0
- * utility functions
- */
-
-/* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org>
- * (C) 2008, 2009 by Holger Hans Peter Freyther <zecke@selfish.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 <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <netinet/in.h>
-
-#include <osmocom/core/msgb.h>
-#include <osmocom/gsm/gsm48.h>
-
-#include <openbsc/abis_rsl.h>
-#include <openbsc/debug.h>
-#include <openbsc/gsm_04_08.h>
-#include <openbsc/transaction.h>
-#include <openbsc/paging.h>
-#include <openbsc/signal.h>
-#include <openbsc/bsc_api.h>
-
-/* should ip.access BTS use direct RTP streams between each other (1),
- * or should OpenBSC always act as RTP relay/proxy in between (0) ? */
-int ipacc_rtp_direct = 1;
-
-static int gsm48_sendmsg(struct msgb *msg)
-{
- if (msg->lchan)
- msg->dst = msg->lchan->ts->trx->rsl_link;
-
- msg->l3h = msg->data;
- return rsl_data_request(msg, 0);
-}
-
-/* Section 9.1.8 / Table 9.9 */
-struct chreq {
- uint8_t val;
- uint8_t mask;
- enum chreq_type type;
-};
-
-/* If SYSTEM INFORMATION TYPE 4 NECI bit == 1 */
-static const struct chreq chreq_type_neci1[] = {
- { 0xa0, 0xe0, CHREQ_T_EMERG_CALL },
- { 0xc0, 0xe0, CHREQ_T_CALL_REEST_TCH_F },
- { 0x68, 0xfc, CHREQ_T_CALL_REEST_TCH_H },
- { 0x6c, 0xfc, CHREQ_T_CALL_REEST_TCH_H_DBL },
- { 0xe0, 0xe0, CHREQ_T_TCH_F },
- { 0x40, 0xf0, CHREQ_T_VOICE_CALL_TCH_H },
- { 0x50, 0xf0, CHREQ_T_DATA_CALL_TCH_H },
- { 0x00, 0xf0, CHREQ_T_LOCATION_UPD },
- { 0x10, 0xf0, CHREQ_T_SDCCH },
- { 0x80, 0xe0, CHREQ_T_PAG_R_ANY_NECI1 },
- { 0x20, 0xf0, CHREQ_T_PAG_R_TCH_F },
- { 0x30, 0xf0, CHREQ_T_PAG_R_TCH_FH },
- { 0x67, 0xff, CHREQ_T_LMU },
- { 0x60, 0xf9, CHREQ_T_RESERVED_SDCCH },
- { 0x61, 0xfb, CHREQ_T_RESERVED_SDCCH },
- { 0x63, 0xff, CHREQ_T_RESERVED_SDCCH },
- { 0x70, 0xf8, CHREQ_T_PDCH_TWO_PHASE },
- { 0x78, 0xfc, CHREQ_T_PDCH_ONE_PHASE },
- { 0x78, 0xfa, CHREQ_T_PDCH_ONE_PHASE },
- { 0x78, 0xf9, CHREQ_T_PDCH_ONE_PHASE },
- { 0x7f, 0xff, CHREQ_T_RESERVED_IGNORE },
-};
-
-/* If SYSTEM INFORMATION TYPE 4 NECI bit == 0 */
-static const struct chreq chreq_type_neci0[] = {
- { 0xa0, 0xe0, CHREQ_T_EMERG_CALL },
- { 0xc0, 0xe0, CHREQ_T_CALL_REEST_TCH_H },
- { 0xe0, 0xe0, CHREQ_T_TCH_F },
- { 0x50, 0xf0, CHREQ_T_DATA_CALL_TCH_H },
- { 0x00, 0xe0, CHREQ_T_LOCATION_UPD },
- { 0x80, 0xe0, CHREQ_T_PAG_R_ANY_NECI0 },
- { 0x20, 0xf0, CHREQ_T_PAG_R_TCH_F },
- { 0x30, 0xf0, CHREQ_T_PAG_R_TCH_FH },
- { 0x67, 0xff, CHREQ_T_LMU },
- { 0x60, 0xf9, CHREQ_T_RESERVED_SDCCH },
- { 0x61, 0xfb, CHREQ_T_RESERVED_SDCCH },
- { 0x63, 0xff, CHREQ_T_RESERVED_SDCCH },
- { 0x70, 0xf8, CHREQ_T_PDCH_TWO_PHASE },
- { 0x78, 0xfc, CHREQ_T_PDCH_ONE_PHASE },
- { 0x78, 0xfa, CHREQ_T_PDCH_ONE_PHASE },
- { 0x78, 0xf9, CHREQ_T_PDCH_ONE_PHASE },
- { 0x7f, 0xff, CHREQ_T_RESERVED_IGNORE },
-};
-
-static const enum gsm_chan_t ctype_by_chreq[] = {
- [CHREQ_T_EMERG_CALL] = GSM_LCHAN_TCH_F,
- [CHREQ_T_CALL_REEST_TCH_F] = GSM_LCHAN_TCH_F,
- [CHREQ_T_CALL_REEST_TCH_H] = GSM_LCHAN_TCH_H,
- [CHREQ_T_CALL_REEST_TCH_H_DBL] = GSM_LCHAN_TCH_H,
- [CHREQ_T_SDCCH] = GSM_LCHAN_SDCCH,
- [CHREQ_T_TCH_F] = GSM_LCHAN_TCH_F,
- [CHREQ_T_VOICE_CALL_TCH_H] = GSM_LCHAN_TCH_H,
- [CHREQ_T_DATA_CALL_TCH_H] = GSM_LCHAN_TCH_H,
- [CHREQ_T_LOCATION_UPD] = GSM_LCHAN_SDCCH,
- [CHREQ_T_PAG_R_ANY_NECI1] = GSM_LCHAN_SDCCH,
- [CHREQ_T_PAG_R_ANY_NECI0] = GSM_LCHAN_SDCCH,
- [CHREQ_T_PAG_R_TCH_F] = GSM_LCHAN_TCH_F,
- [CHREQ_T_PAG_R_TCH_FH] = GSM_LCHAN_TCH_F,
- [CHREQ_T_LMU] = GSM_LCHAN_SDCCH,
- [CHREQ_T_RESERVED_SDCCH] = GSM_LCHAN_SDCCH,
- [CHREQ_T_PDCH_ONE_PHASE] = GSM_LCHAN_PDTCH,
- [CHREQ_T_PDCH_TWO_PHASE] = GSM_LCHAN_PDTCH,
- [CHREQ_T_RESERVED_IGNORE] = GSM_LCHAN_UNKNOWN,
-};
-
-static const enum gsm_chreq_reason_t reason_by_chreq[] = {
- [CHREQ_T_EMERG_CALL] = GSM_CHREQ_REASON_EMERG,
- [CHREQ_T_CALL_REEST_TCH_F] = GSM_CHREQ_REASON_CALL,
- [CHREQ_T_CALL_REEST_TCH_H] = GSM_CHREQ_REASON_CALL,
- [CHREQ_T_CALL_REEST_TCH_H_DBL] = GSM_CHREQ_REASON_CALL,
- [CHREQ_T_SDCCH] = GSM_CHREQ_REASON_OTHER,
- [CHREQ_T_TCH_F] = GSM_CHREQ_REASON_OTHER,
- [CHREQ_T_VOICE_CALL_TCH_H] = GSM_CHREQ_REASON_CALL,
- [CHREQ_T_DATA_CALL_TCH_H] = GSM_CHREQ_REASON_OTHER,
- [CHREQ_T_LOCATION_UPD] = GSM_CHREQ_REASON_LOCATION_UPD,
- [CHREQ_T_PAG_R_ANY_NECI1] = GSM_CHREQ_REASON_PAG,
- [CHREQ_T_PAG_R_ANY_NECI0] = GSM_CHREQ_REASON_PAG,
- [CHREQ_T_PAG_R_TCH_F] = GSM_CHREQ_REASON_PAG,
- [CHREQ_T_PAG_R_TCH_FH] = GSM_CHREQ_REASON_PAG,
- [CHREQ_T_LMU] = GSM_CHREQ_REASON_OTHER,
- [CHREQ_T_PDCH_ONE_PHASE] = GSM_CHREQ_REASON_PDCH,
- [CHREQ_T_PDCH_TWO_PHASE] = GSM_CHREQ_REASON_PDCH,
- [CHREQ_T_RESERVED_SDCCH] = GSM_CHREQ_REASON_OTHER,
- [CHREQ_T_RESERVED_IGNORE] = GSM_CHREQ_REASON_OTHER,
-};
-
-/* verify that the two tables match */
-osmo_static_assert(sizeof(ctype_by_chreq) ==
- sizeof(((struct gsm_network *) NULL)->ctype_by_chreq), assert_size);
-
-/*
- * Update channel types for request based on policy. E.g. in the
- * case of a TCH/H network/bsc use TCH/H for the emergency calls,
- * for early assignment assign a SDCCH and some other options.
- */
-void gsm_net_update_ctype(struct gsm_network *network)
-{
- /* copy over the data */
- memcpy(network->ctype_by_chreq, ctype_by_chreq, sizeof(ctype_by_chreq));
-
- /*
- * Use TCH/H for emergency calls when this cell allows TCH/H. Maybe it
- * is better to iterate over the BTS/TRX and check if no TCH/F is available
- * and then set it to TCH/H.
- */
- if (network->neci)
- network->ctype_by_chreq[CHREQ_T_EMERG_CALL] = GSM_LCHAN_TCH_H;
-
- if (network->pag_any_tch) {
- if (network->neci) {
- network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI0] = GSM_LCHAN_TCH_H;
- network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI1] = GSM_LCHAN_TCH_H;
- } else {
- network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI0] = GSM_LCHAN_TCH_F;
- network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI1] = GSM_LCHAN_TCH_F;
- }
- }
-}
-
-enum gsm_chan_t get_ctype_by_chreq(struct gsm_network *network, uint8_t ra)
-{
- int i;
- int length;
- const struct chreq *chreq;
-
- if (network->neci) {
- chreq = chreq_type_neci1;
- length = ARRAY_SIZE(chreq_type_neci1);
- } else {
- chreq = chreq_type_neci0;
- length = ARRAY_SIZE(chreq_type_neci0);
- }
-
-
- for (i = 0; i < length; i++) {
- const struct chreq *chr = &chreq[i];
- if ((ra & chr->mask) == chr->val)
- return network->ctype_by_chreq[chr->type];
- }
- LOGP(DRR, LOGL_ERROR, "Unknown CHANNEL REQUEST RQD 0x%02x\n", ra);
- return GSM_LCHAN_SDCCH;
-}
-
-int get_reason_by_chreq(uint8_t ra, int neci)
-{
- int i;
- int length;
- const struct chreq *chreq;
-
- if (neci) {
- chreq = chreq_type_neci1;
- length = ARRAY_SIZE(chreq_type_neci1);
- } else {
- chreq = chreq_type_neci0;
- length = ARRAY_SIZE(chreq_type_neci0);
- }
-
- for (i = 0; i < length; i++) {
- const struct chreq *chr = &chreq[i];
- if ((ra & chr->mask) == chr->val)
- return reason_by_chreq[chr->type];
- }
- LOGP(DRR, LOGL_ERROR, "Unknown CHANNEL REQUEST REASON 0x%02x\n", ra);
- return GSM_CHREQ_REASON_OTHER;
-}
-
-static void mr_config_for_ms(struct gsm_lchan *lchan, struct msgb *msg)
-{
- if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR)
- msgb_tlv_put(msg, GSM48_IE_MUL_RATE_CFG, lchan->mr_ms_lv[0],
- lchan->mr_ms_lv + 1);
-}
-
-/* 7.1.7 and 9.1.7: RR CHANnel RELease */
-int gsm48_send_rr_release(struct gsm_lchan *lchan)
-{
- struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 RR REL");
- struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
- uint8_t *cause;
-
- msg->lchan = lchan;
- gh->proto_discr = GSM48_PDISC_RR;
- gh->msg_type = GSM48_MT_RR_CHAN_REL;
-
- cause = msgb_put(msg, 1);
- cause[0] = GSM48_RR_CAUSE_NORMAL;
-
- DEBUGP(DRR, "Sending Channel Release: Chan: Number: %d Type: %d\n",
- lchan->nr, lchan->type);
-
- /* Send actual release request to MS */
- return gsm48_sendmsg(msg);
-}
-
-int send_siemens_mrpci(struct gsm_lchan *lchan,
- uint8_t *classmark2_lv)
-{
- struct rsl_mrpci mrpci;
-
- if (classmark2_lv[0] < 2)
- return -EINVAL;
-
- mrpci.power_class = classmark2_lv[1] & 0x7;
- mrpci.vgcs_capable = classmark2_lv[2] & (1 << 1);
- mrpci.vbs_capable = classmark2_lv[2] & (1 <<2);
- mrpci.gsm_phase = (classmark2_lv[1]) >> 5 & 0x3;
-
- return rsl_siemens_mrpci(lchan, &mrpci);
-}
-
-/* Chapter 9.1.9: Ciphering Mode Command */
-int gsm48_send_rr_ciph_mode(struct gsm_lchan *lchan, int want_imeisv)
-{
- struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 CIPH");
- struct gsm48_hdr *gh;
- uint8_t ciph_mod_set;
-
- msg->lchan = lchan;
-
- DEBUGP(DRR, "TX CIPHERING MODE CMD\n");
-
- if (lchan->encr.alg_id <= RSL_ENC_ALG_A5(0))
- ciph_mod_set = 0;
- else
- ciph_mod_set = (lchan->encr.alg_id-2)<<1 | 1;
-
- gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + 1);
- gh->proto_discr = GSM48_PDISC_RR;
- gh->msg_type = GSM48_MT_RR_CIPH_M_CMD;
- gh->data[0] = (want_imeisv & 0x1) << 4 | (ciph_mod_set & 0xf);
-
- return rsl_encryption_cmd(msg);
-}
-
-static void gsm48_cell_desc(struct gsm48_cell_desc *cd,
- const struct gsm_bts *bts)
-{
- cd->ncc = (bts->bsic >> 3 & 0x7);
- cd->bcc = (bts->bsic & 0x7);
- cd->arfcn_hi = bts->c0->arfcn >> 8;
- cd->arfcn_lo = bts->c0->arfcn & 0xff;
-}
-
-void gsm48_lchan2chan_desc(struct gsm48_chan_desc *cd,
- const struct gsm_lchan *lchan)
-{
- uint16_t arfcn = lchan->ts->trx->arfcn & 0x3ff;
-
- cd->chan_nr = gsm_lchan2chan_nr(lchan);
- if (!lchan->ts->hopping.enabled) {
- cd->h0.tsc = gsm_ts_tsc(lchan->ts);
- cd->h0.h = 0;
- cd->h0.arfcn_high = arfcn >> 8;
- cd->h0.arfcn_low = arfcn & 0xff;
- } else {
- cd->h1.tsc = gsm_ts_tsc(lchan->ts);
- cd->h1.h = 1;
- cd->h1.maio_high = lchan->ts->hopping.maio >> 2;
- cd->h1.maio_low = lchan->ts->hopping.maio & 0x03;
- cd->h1.hsn = lchan->ts->hopping.hsn;
- }
-}
-
-/*! \brief Encode a TS 04.08 multirate config LV according to 10.5.2.21aa
- * \param[out] lv caller-allocated buffer of 7 bytes. First octet is IS length
- * \param[in] mr multi-rate configuration to encode
- * \param[in] modes array describing the AMR modes
- * \returns 0 on success */
-int gsm48_multirate_config(uint8_t *lv, const struct amr_multirate_conf *mr, const struct amr_mode *modes)
-{
- int num = 0, i;
-
- for (i = 0; i < 8; i++) {
- if (((mr->gsm48_ie[1] >> i) & 1))
- num++;
- }
- if (num > 4) {
- LOGP(DRR, LOGL_ERROR, "BUG: Using multirate codec with too "
- "many modes in config.\n");
- num = 4;
- }
- if (num < 1) {
- LOGP(DRR, LOGL_ERROR, "BUG: Using multirate codec with no "
- "mode in config.\n");
- num = 1;
- }
-
- lv[0] = (num == 1) ? 2 : (num + 2);
- memcpy(lv + 1, mr->gsm48_ie, 2);
- if (num == 1)
- return 0;
-
- lv[3] = modes[0].threshold & 0x3f;
- lv[4] = modes[0].hysteresis << 4;
- if (num == 2)
- return 0;
- lv[4] |= (modes[1].threshold & 0x3f) >> 2;
- lv[5] = modes[1].threshold << 6;
- lv[5] |= (modes[1].hysteresis & 0x0f) << 2;
- if (num == 3)
- return 0;
- lv[5] |= (modes[2].threshold & 0x3f) >> 4;
- lv[6] = modes[2].threshold << 4;
- lv[6] |= modes[2].hysteresis & 0x0f;
-
- return 0;
-}
-
-#define GSM48_HOCMD_CCHDESC_LEN 16
-
-/* Chapter 9.1.15: Handover Command */
-int gsm48_send_ho_cmd(struct gsm_lchan *old_lchan, struct gsm_lchan *new_lchan,
- uint8_t power_command, uint8_t ho_ref)
-{
- struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 HO CMD");
- struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
- struct gsm48_ho_cmd *ho =
- (struct gsm48_ho_cmd *) msgb_put(msg, sizeof(*ho));
-
- msg->lchan = old_lchan;
- gh->proto_discr = GSM48_PDISC_RR;
- gh->msg_type = GSM48_MT_RR_HANDO_CMD;
-
- /* mandatory bits */
- gsm48_cell_desc(&ho->cell_desc, new_lchan->ts->trx->bts);
- gsm48_lchan2chan_desc(&ho->chan_desc, new_lchan);
- ho->ho_ref = ho_ref;
- ho->power_command = power_command;
-
- if (new_lchan->ts->hopping.enabled) {
- struct gsm_bts *bts = new_lchan->ts->trx->bts;
- struct gsm48_system_information_type_1 *si1;
- uint8_t *cur;
-
- si1 = GSM_BTS_SI(bts, SYSINFO_TYPE_1);
- /* Copy the Cell Chan Desc (ARFCNS in this cell) */
- msgb_put_u8(msg, GSM48_IE_CELL_CH_DESC);
- cur = msgb_put(msg, GSM48_HOCMD_CCHDESC_LEN);
- memcpy(cur, si1->cell_channel_description,
- GSM48_HOCMD_CCHDESC_LEN);
- /* Copy the Mobile Allocation */
- msgb_tlv_put(msg, GSM48_IE_MA_BEFORE,
- new_lchan->ts->hopping.ma_len,
- new_lchan->ts->hopping.ma_data);
- }
- /* FIXME: optional bits for type of synchronization? */
-
- return gsm48_sendmsg(msg);
-}
-
-/* Chapter 9.1.2: Assignment Command */
-int gsm48_send_rr_ass_cmd(struct gsm_lchan *dest_lchan, struct gsm_lchan *lchan, uint8_t power_command)
-{
- struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 ASS CMD");
- struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
- struct gsm48_ass_cmd *ass =
- (struct gsm48_ass_cmd *) msgb_put(msg, sizeof(*ass));
-
- DEBUGP(DRR, "-> ASSIGNMENT COMMAND tch_mode=0x%02x\n", lchan->tch_mode);
-
- msg->lchan = dest_lchan;
- gh->proto_discr = GSM48_PDISC_RR;
- gh->msg_type = GSM48_MT_RR_ASS_CMD;
-
- /*
- * fill the channel information element, this code
- * should probably be shared with rsl_rx_chan_rqd(),
- * gsm48_lchan_modify(). But beware that 10.5.2.5
- * 10.5.2.5.a have slightly different semantic for
- * the chan_desc. But as long as multi-slot configurations
- * are not used we seem to be fine.
- */
- gsm48_lchan2chan_desc(&ass->chan_desc, lchan);
- ass->power_command = power_command;
-
- /* optional: cell channel description */
-
- msgb_tv_put(msg, GSM48_IE_CHANMODE_1, lchan->tch_mode);
-
- /* mobile allocation in case of hopping */
- if (lchan->ts->hopping.enabled) {
- msgb_tlv_put(msg, GSM48_IE_MA_BEFORE, lchan->ts->hopping.ma_len,
- lchan->ts->hopping.ma_data);
- }
-
- /* in case of multi rate we need to attach a config */
- mr_config_for_ms(lchan, msg);
-
- return gsm48_sendmsg(msg);
-}
-
-/* 9.1.5 Channel mode modify: Modify the mode on the MS side */
-int gsm48_lchan_modify(struct gsm_lchan *lchan, uint8_t mode)
-{
- struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 CHN MOD");
- struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
- struct gsm48_chan_mode_modify *cmm =
- (struct gsm48_chan_mode_modify *) msgb_put(msg, sizeof(*cmm));
-
- DEBUGP(DRR, "-> CHANNEL MODE MODIFY mode=0x%02x\n", mode);
-
- lchan->tch_mode = mode;
- msg->lchan = lchan;
- gh->proto_discr = GSM48_PDISC_RR;
- gh->msg_type = GSM48_MT_RR_CHAN_MODE_MODIF;
-
- /* fill the channel information element, this code
- * should probably be shared with rsl_rx_chan_rqd() */
- gsm48_lchan2chan_desc(&cmm->chan_desc, lchan);
- cmm->mode = mode;
-
- /* in case of multi rate we need to attach a config */
- mr_config_for_ms(lchan, msg);
-
- return gsm48_sendmsg(msg);
-}
-
-int gsm48_rx_rr_modif_ack(struct msgb *msg)
-{
- int rc;
- struct gsm48_hdr *gh = msgb_l3(msg);
- struct gsm48_chan_mode_modify *mod =
- (struct gsm48_chan_mode_modify *) gh->data;
-
- DEBUGP(DRR, "CHANNEL MODE MODIFY ACK\n");
-
- if (mod->mode != msg->lchan->tch_mode) {
- LOGP(DRR, LOGL_ERROR, "CHANNEL MODE change failed. Wanted: %d Got: %d\n",
- msg->lchan->tch_mode, mod->mode);
- return -1;
- }
-
- /* update the channel type */
- switch (mod->mode) {
- case GSM48_CMODE_SIGN:
- msg->lchan->rsl_cmode = RSL_CMOD_SPD_SIGN;
- break;
- case GSM48_CMODE_SPEECH_V1:
- case GSM48_CMODE_SPEECH_EFR:
- case GSM48_CMODE_SPEECH_AMR:
- msg->lchan->rsl_cmode = RSL_CMOD_SPD_SPEECH;
- break;
- case GSM48_CMODE_DATA_14k5:
- case GSM48_CMODE_DATA_12k0:
- case GSM48_CMODE_DATA_6k0:
- case GSM48_CMODE_DATA_3k6:
- msg->lchan->rsl_cmode = RSL_CMOD_SPD_DATA;
- break;
- }
-
- /* We've successfully modified the MS side of the channel,
- * now go on to modify the BTS side of the channel */
- rc = rsl_chan_mode_modify_req(msg->lchan);
-
- /* FIXME: we not only need to do this after mode modify, but
- * also after channel activation */
- if (is_ipaccess_bts(msg->lchan->ts->trx->bts) && mod->mode != GSM48_CMODE_SIGN)
- rsl_ipacc_crcx(msg->lchan);
- return rc;
-}
-
-int gsm48_parse_meas_rep(struct gsm_meas_rep *rep, struct msgb *msg)
-{
- struct gsm48_hdr *gh = msgb_l3(msg);
- uint8_t *data = gh->data;
- struct gsm_bts *bts = msg->lchan->ts->trx->bts;
- struct bitvec *nbv = &bts->si_common.neigh_list;
- struct gsm_meas_rep_cell *mrc;
-
- if (gh->msg_type != GSM48_MT_RR_MEAS_REP)
- return -EINVAL;
-
- if (data[0] & 0x80)
- rep->flags |= MEAS_REP_F_BA1;
- if (data[0] & 0x40)
- rep->flags |= MEAS_REP_F_UL_DTX;
- if ((data[1] & 0x40) == 0x00)
- rep->flags |= MEAS_REP_F_DL_VALID;
-
- rep->dl.full.rx_lev = data[0] & 0x3f;
- rep->dl.sub.rx_lev = data[1] & 0x3f;
- rep->dl.full.rx_qual = (data[2] >> 4) & 0x7;
- rep->dl.sub.rx_qual = (data[2] >> 1) & 0x7;
-
- rep->num_cell = ((data[3] >> 6) & 0x3) | ((data[2] & 0x01) << 2);
- if (rep->num_cell < 1 || rep->num_cell > 6)
- return 0;
-
- /* an encoding nightmare in perfection */
- mrc = &rep->cell[0];
- mrc->rxlev = data[3] & 0x3f;
- mrc->neigh_idx = data[4] >> 3;
- mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1);
- mrc->bsic = ((data[4] & 0x07) << 3) | (data[5] >> 5);
- if (rep->num_cell < 2)
- return 0;
-
- mrc = &rep->cell[1];
- mrc->rxlev = ((data[5] & 0x1f) << 1) | (data[6] >> 7);
- mrc->neigh_idx = (data[6] >> 2) & 0x1f;
- mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1);
- mrc->bsic = ((data[6] & 0x03) << 4) | (data[7] >> 4);
- if (rep->num_cell < 3)
- return 0;
-
- mrc = &rep->cell[2];
- mrc->rxlev = ((data[7] & 0x0f) << 2) | (data[8] >> 6);
- mrc->neigh_idx = (data[8] >> 1) & 0x1f;
- mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1);
- mrc->bsic = ((data[8] & 0x01) << 5) | (data[9] >> 3);
- if (rep->num_cell < 4)
- return 0;
-
- mrc = &rep->cell[3];
- mrc->rxlev = ((data[9] & 0x07) << 3) | (data[10] >> 5);
- mrc->neigh_idx = data[10] & 0x1f;
- mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1);
- mrc->bsic = data[11] >> 2;
- if (rep->num_cell < 5)
- return 0;
-
- mrc = &rep->cell[4];
- mrc->rxlev = ((data[11] & 0x03) << 4) | (data[12] >> 4);
- mrc->neigh_idx = ((data[12] & 0xf) << 1) | (data[13] >> 7);
- mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1);
- mrc->bsic = (data[13] >> 1) & 0x3f;
- if (rep->num_cell < 6)
- return 0;
-
- mrc = &rep->cell[5];
- mrc->rxlev = ((data[13] & 0x01) << 5) | (data[14] >> 3);
- mrc->neigh_idx = ((data[14] & 0x07) << 2) | (data[15] >> 6);
- mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1);
- mrc->bsic = data[15] & 0x3f;
-
- return 0;
-}
-
-/* 9.2.5 CM service accept */
-int gsm48_tx_mm_serv_ack(struct gsm_subscriber_connection *conn)
-{
- struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 SERV ACK");
- struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
-
- msg->lchan = conn->lchan;
-
- gh->proto_discr = GSM48_PDISC_MM;
- gh->msg_type = GSM48_MT_MM_CM_SERV_ACC;
-
- DEBUGP(DMM, "-> CM SERVICE ACK\n");
-
- return gsm0808_submit_dtap(conn, msg, 0, 0);
-}
-
-/* 9.2.6 CM service reject */
-int gsm48_tx_mm_serv_rej(struct gsm_subscriber_connection *conn,
- enum gsm48_reject_value value)
-{
- struct msgb *msg;
-
- msg = gsm48_create_mm_serv_rej(value);
- if (!msg) {
- LOGP(DMM, LOGL_ERROR, "Failed to allocate CM Service Reject.\n");
- return -1;
- }
-
- DEBUGP(DMM, "-> CM SERVICE Reject cause: %d\n", value);
-
- return gsm0808_submit_dtap(conn, msg, 0, 0);
-}