Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 1 | /* GSM Mobile Radio Interface Layer 3 messages on the A-bis interface |
| 2 | * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 |
| 3 | * utility functions |
| 4 | */ |
| 5 | |
| 6 | /* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org> |
| 7 | * (C) 2008, 2009 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 8 | * |
| 9 | * All Rights Reserved |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License along |
| 22 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 23 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 24 | * |
| 25 | */ |
| 26 | #include <stdio.h> |
| 27 | #include <stdlib.h> |
Holger Hans Peter Freyther | adc1478 | 2009-08-21 04:57:35 +0200 | [diff] [blame] | 28 | #include <errno.h> |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 29 | #include <netinet/in.h> |
| 30 | |
Harald Welte | dfe6c7d | 2010-02-20 16:24:02 +0100 | [diff] [blame] | 31 | #include <osmocore/msgb.h> |
Harald Welte | afedeab | 2010-03-04 10:55:40 +0100 | [diff] [blame] | 32 | #include <osmocore/gsm48.h> |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 33 | #include <openbsc/debug.h> |
| 34 | #include <openbsc/gsm_04_08.h> |
| 35 | #include <openbsc/transaction.h> |
Holger Hans Peter Freyther | 3ee5d3e | 2009-08-21 05:18:21 +0200 | [diff] [blame] | 36 | #include <openbsc/paging.h> |
| 37 | #include <openbsc/signal.h> |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 38 | |
| 39 | #define GSM48_ALLOC_SIZE 1024 |
| 40 | #define GSM48_ALLOC_HEADROOM 128 |
| 41 | |
| 42 | /* should ip.access BTS use direct RTP streams between each other (1), |
| 43 | * or should OpenBSC always act as RTP relay/proxy in between (0) ? */ |
| 44 | int ipacc_rtp_direct = 1; |
| 45 | |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 46 | struct msgb *gsm48_msgb_alloc(void) |
| 47 | { |
| 48 | return msgb_alloc_headroom(GSM48_ALLOC_SIZE, GSM48_ALLOC_HEADROOM, |
| 49 | "GSM 04.08"); |
| 50 | } |
| 51 | |
| 52 | int gsm48_sendmsg(struct msgb *msg, struct gsm_trans *trans) |
| 53 | { |
| 54 | struct gsm48_hdr *gh = (struct gsm48_hdr *) msg->data; |
| 55 | |
| 56 | /* if we get passed a transaction reference, do some common |
| 57 | * work that the caller no longer has to do */ |
| 58 | if (trans) { |
| 59 | gh->proto_discr = trans->protocol | (trans->transaction_id << 4); |
Holger Hans Peter Freyther | e95d482 | 2010-03-23 07:00:22 +0100 | [diff] [blame] | 60 | msg->lchan = trans->conn->lchan; |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | if (msg->lchan) { |
| 64 | msg->trx = msg->lchan->ts->trx; |
| 65 | |
| 66 | if ((gh->proto_discr & GSM48_PDISC_MASK) == GSM48_PDISC_CC) |
| 67 | DEBUGP(DCC, "(bts %d trx %d ts %d ti %02x) " |
| 68 | "Sending '%s' to MS.\n", msg->trx->bts->nr, |
| 69 | msg->trx->nr, msg->lchan->ts->nr, |
| 70 | gh->proto_discr & 0xf0, |
Harald Welte | e95daf1 | 2010-03-25 12:13:02 +0800 | [diff] [blame] | 71 | gsm48_cc_msg_name(gh->msg_type)); |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 72 | else |
| 73 | DEBUGP(DCC, "(bts %d trx %d ts %d pd %02x) " |
| 74 | "Sending 0x%02x to MS.\n", msg->trx->bts->nr, |
| 75 | msg->trx->nr, msg->lchan->ts->nr, |
| 76 | gh->proto_discr, gh->msg_type); |
| 77 | } |
| 78 | |
| 79 | msg->l3h = msg->data; |
| 80 | |
| 81 | return rsl_data_request(msg, 0); |
| 82 | } |
| 83 | |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 84 | /* Section 9.1.8 / Table 9.9 */ |
| 85 | struct chreq { |
| 86 | u_int8_t val; |
| 87 | u_int8_t mask; |
| 88 | enum chreq_type type; |
| 89 | }; |
| 90 | |
| 91 | /* If SYSTEM INFORMATION TYPE 4 NECI bit == 1 */ |
| 92 | static const struct chreq chreq_type_neci1[] = { |
| 93 | { 0xa0, 0xe0, CHREQ_T_EMERG_CALL }, |
| 94 | { 0xc0, 0xe0, CHREQ_T_CALL_REEST_TCH_F }, |
| 95 | { 0x68, 0xfc, CHREQ_T_CALL_REEST_TCH_H }, |
| 96 | { 0x6c, 0xfc, CHREQ_T_CALL_REEST_TCH_H_DBL }, |
| 97 | { 0xe0, 0xe0, CHREQ_T_SDCCH }, |
| 98 | { 0x40, 0xf0, CHREQ_T_VOICE_CALL_TCH_H }, |
| 99 | { 0x50, 0xf0, CHREQ_T_DATA_CALL_TCH_H }, |
| 100 | { 0x00, 0xf0, CHREQ_T_LOCATION_UPD }, |
| 101 | { 0x10, 0xf0, CHREQ_T_SDCCH }, |
Holger Hans Peter Freyther | 135a7c6 | 2009-11-17 16:46:46 +0100 | [diff] [blame] | 102 | { 0x80, 0xe0, CHREQ_T_PAG_R_ANY_NECI1 }, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 103 | { 0x20, 0xf0, CHREQ_T_PAG_R_TCH_F }, |
| 104 | { 0x30, 0xf0, CHREQ_T_PAG_R_TCH_FH }, |
Holger Hans Peter Freyther | d61654c | 2009-11-21 20:20:43 +0100 | [diff] [blame] | 105 | { 0x67, 0xff, CHREQ_T_LMU }, |
| 106 | { 0x60, 0xf9, CHREQ_T_RESERVED_SDCCH }, |
| 107 | { 0x61, 0xfb, CHREQ_T_RESERVED_SDCCH }, |
| 108 | { 0x63, 0xff, CHREQ_T_RESERVED_SDCCH }, |
| 109 | { 0x7f, 0xff, CHREQ_T_RESERVED_IGNORE }, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 110 | }; |
| 111 | |
| 112 | /* If SYSTEM INFORMATION TYPE 4 NECI bit == 0 */ |
| 113 | static const struct chreq chreq_type_neci0[] = { |
| 114 | { 0xa0, 0xe0, CHREQ_T_EMERG_CALL }, |
| 115 | { 0xc0, 0xe0, CHREQ_T_CALL_REEST_TCH_H }, |
| 116 | { 0xe0, 0xe0, CHREQ_T_TCH_F }, |
| 117 | { 0x50, 0xf0, CHREQ_T_DATA_CALL_TCH_H }, |
| 118 | { 0x00, 0xe0, CHREQ_T_LOCATION_UPD }, |
Holger Hans Peter Freyther | 135a7c6 | 2009-11-17 16:46:46 +0100 | [diff] [blame] | 119 | { 0x80, 0xe0, CHREQ_T_PAG_R_ANY_NECI0 }, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 120 | { 0x20, 0xf0, CHREQ_T_PAG_R_TCH_F }, |
| 121 | { 0x30, 0xf0, CHREQ_T_PAG_R_TCH_FH }, |
Holger Hans Peter Freyther | d61654c | 2009-11-21 20:20:43 +0100 | [diff] [blame] | 122 | { 0x67, 0xff, CHREQ_T_LMU }, |
| 123 | { 0x60, 0xf9, CHREQ_T_RESERVED_SDCCH }, |
| 124 | { 0x61, 0xfb, CHREQ_T_RESERVED_SDCCH }, |
| 125 | { 0x63, 0xff, CHREQ_T_RESERVED_SDCCH }, |
| 126 | { 0x7f, 0xff, CHREQ_T_RESERVED_IGNORE }, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 127 | }; |
| 128 | |
| 129 | static const enum gsm_chan_t ctype_by_chreq[] = { |
| 130 | [CHREQ_T_EMERG_CALL] = GSM_LCHAN_TCH_F, |
| 131 | [CHREQ_T_CALL_REEST_TCH_F] = GSM_LCHAN_TCH_F, |
| 132 | [CHREQ_T_CALL_REEST_TCH_H] = GSM_LCHAN_TCH_H, |
| 133 | [CHREQ_T_CALL_REEST_TCH_H_DBL] = GSM_LCHAN_TCH_H, |
| 134 | [CHREQ_T_SDCCH] = GSM_LCHAN_SDCCH, |
| 135 | [CHREQ_T_TCH_F] = GSM_LCHAN_TCH_F, |
| 136 | [CHREQ_T_VOICE_CALL_TCH_H] = GSM_LCHAN_TCH_H, |
| 137 | [CHREQ_T_DATA_CALL_TCH_H] = GSM_LCHAN_TCH_H, |
| 138 | [CHREQ_T_LOCATION_UPD] = GSM_LCHAN_SDCCH, |
Holger Hans Peter Freyther | 135a7c6 | 2009-11-17 16:46:46 +0100 | [diff] [blame] | 139 | [CHREQ_T_PAG_R_ANY_NECI1] = GSM_LCHAN_SDCCH, |
| 140 | [CHREQ_T_PAG_R_ANY_NECI0] = GSM_LCHAN_SDCCH, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 141 | [CHREQ_T_PAG_R_TCH_F] = GSM_LCHAN_TCH_F, |
| 142 | [CHREQ_T_PAG_R_TCH_FH] = GSM_LCHAN_TCH_F, |
Holger Hans Peter Freyther | d61654c | 2009-11-21 20:20:43 +0100 | [diff] [blame] | 143 | [CHREQ_T_LMU] = GSM_LCHAN_SDCCH, |
| 144 | [CHREQ_T_RESERVED_SDCCH] = GSM_LCHAN_SDCCH, |
| 145 | [CHREQ_T_RESERVED_IGNORE] = GSM_LCHAN_UNKNOWN, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 146 | }; |
| 147 | |
| 148 | static const enum gsm_chreq_reason_t reason_by_chreq[] = { |
| 149 | [CHREQ_T_EMERG_CALL] = GSM_CHREQ_REASON_EMERG, |
| 150 | [CHREQ_T_CALL_REEST_TCH_F] = GSM_CHREQ_REASON_CALL, |
| 151 | [CHREQ_T_CALL_REEST_TCH_H] = GSM_CHREQ_REASON_CALL, |
| 152 | [CHREQ_T_CALL_REEST_TCH_H_DBL] = GSM_CHREQ_REASON_CALL, |
| 153 | [CHREQ_T_SDCCH] = GSM_CHREQ_REASON_OTHER, |
| 154 | [CHREQ_T_TCH_F] = GSM_CHREQ_REASON_OTHER, |
Harald Welte | 9385c11 | 2009-12-12 20:57:52 +0100 | [diff] [blame] | 155 | [CHREQ_T_VOICE_CALL_TCH_H] = GSM_CHREQ_REASON_CALL, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 156 | [CHREQ_T_DATA_CALL_TCH_H] = GSM_CHREQ_REASON_OTHER, |
| 157 | [CHREQ_T_LOCATION_UPD] = GSM_CHREQ_REASON_LOCATION_UPD, |
Holger Hans Peter Freyther | 135a7c6 | 2009-11-17 16:46:46 +0100 | [diff] [blame] | 158 | [CHREQ_T_PAG_R_ANY_NECI1] = GSM_CHREQ_REASON_PAG, |
| 159 | [CHREQ_T_PAG_R_ANY_NECI0] = GSM_CHREQ_REASON_PAG, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 160 | [CHREQ_T_PAG_R_TCH_F] = GSM_CHREQ_REASON_PAG, |
| 161 | [CHREQ_T_PAG_R_TCH_FH] = GSM_CHREQ_REASON_PAG, |
Holger Hans Peter Freyther | d61654c | 2009-11-21 20:20:43 +0100 | [diff] [blame] | 162 | [CHREQ_T_LMU] = GSM_CHREQ_REASON_OTHER, |
| 163 | [CHREQ_T_RESERVED_SDCCH] = GSM_CHREQ_REASON_OTHER, |
| 164 | [CHREQ_T_RESERVED_IGNORE] = GSM_CHREQ_REASON_OTHER, |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 165 | }; |
| 166 | |
Holger Hans Peter Freyther | f7d752f | 2009-11-16 17:12:38 +0100 | [diff] [blame] | 167 | enum gsm_chan_t get_ctype_by_chreq(struct gsm_bts *bts, u_int8_t ra, int neci) |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 168 | { |
| 169 | int i; |
Holger Hans Peter Freyther | 843b44d | 2009-11-17 16:38:25 +0100 | [diff] [blame] | 170 | int length; |
| 171 | const struct chreq *chreq; |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 172 | |
Holger Hans Peter Freyther | 843b44d | 2009-11-17 16:38:25 +0100 | [diff] [blame] | 173 | if (neci) { |
| 174 | chreq = chreq_type_neci1; |
| 175 | length = ARRAY_SIZE(chreq_type_neci1); |
| 176 | } else { |
| 177 | chreq = chreq_type_neci0; |
| 178 | length = ARRAY_SIZE(chreq_type_neci0); |
| 179 | } |
| 180 | |
| 181 | |
| 182 | for (i = 0; i < length; i++) { |
| 183 | const struct chreq *chr = &chreq[i]; |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 184 | if ((ra & chr->mask) == chr->val) |
| 185 | return ctype_by_chreq[chr->type]; |
| 186 | } |
Harald Welte | 50720e7 | 2009-12-24 11:50:20 +0100 | [diff] [blame] | 187 | LOGP(DRR, LOGL_ERROR, "Unknown CHANNEL REQUEST RQD 0x%02x\n", ra); |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 188 | return GSM_LCHAN_SDCCH; |
| 189 | } |
| 190 | |
Holger Hans Peter Freyther | f7d752f | 2009-11-16 17:12:38 +0100 | [diff] [blame] | 191 | enum gsm_chreq_reason_t get_reason_by_chreq(struct gsm_bts *bts, u_int8_t ra, int neci) |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 192 | { |
| 193 | int i; |
Holger Hans Peter Freyther | 843b44d | 2009-11-17 16:38:25 +0100 | [diff] [blame] | 194 | int length; |
| 195 | const struct chreq *chreq; |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 196 | |
Holger Hans Peter Freyther | 843b44d | 2009-11-17 16:38:25 +0100 | [diff] [blame] | 197 | if (neci) { |
| 198 | chreq = chreq_type_neci1; |
| 199 | length = ARRAY_SIZE(chreq_type_neci1); |
| 200 | } else { |
| 201 | chreq = chreq_type_neci0; |
| 202 | length = ARRAY_SIZE(chreq_type_neci0); |
| 203 | } |
| 204 | |
| 205 | for (i = 0; i < length; i++) { |
| 206 | const struct chreq *chr = &chreq[i]; |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 207 | if ((ra & chr->mask) == chr->val) |
| 208 | return reason_by_chreq[chr->type]; |
| 209 | } |
Harald Welte | 50720e7 | 2009-12-24 11:50:20 +0100 | [diff] [blame] | 210 | LOGP(DRR, LOGL_ERROR, "Unknown CHANNEL REQUEST REASON 0x%02x\n", ra); |
Holger Hans Peter Freyther | 1494a76 | 2009-08-01 07:26:59 +0200 | [diff] [blame] | 211 | return GSM_CHREQ_REASON_OTHER; |
| 212 | } |
| 213 | |
| 214 | /* 7.1.7 and 9.1.7: RR CHANnel RELease */ |
| 215 | int gsm48_send_rr_release(struct gsm_lchan *lchan) |
| 216 | { |
| 217 | struct msgb *msg = gsm48_msgb_alloc(); |
| 218 | struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); |
| 219 | u_int8_t *cause; |
| 220 | |
| 221 | msg->lchan = lchan; |
| 222 | gh->proto_discr = GSM48_PDISC_RR; |
| 223 | gh->msg_type = GSM48_MT_RR_CHAN_REL; |
| 224 | |
| 225 | cause = msgb_put(msg, 1); |
| 226 | cause[0] = GSM48_RR_CAUSE_NORMAL; |
| 227 | |
| 228 | DEBUGP(DRR, "Sending Channel Release: Chan: Number: %d Type: %d\n", |
| 229 | lchan->nr, lchan->type); |
| 230 | |
| 231 | /* Send actual release request to MS */ |
| 232 | gsm48_sendmsg(msg, NULL); |
| 233 | /* FIXME: Start Timer T3109 */ |
| 234 | |
| 235 | /* Deactivate the SACCH on the BTS side */ |
| 236 | return rsl_deact_sacch(lchan); |
| 237 | } |
| 238 | |
Holger Hans Peter Freyther | adc1478 | 2009-08-21 04:57:35 +0200 | [diff] [blame] | 239 | int send_siemens_mrpci(struct gsm_lchan *lchan, |
| 240 | u_int8_t *classmark2_lv) |
| 241 | { |
| 242 | struct rsl_mrpci mrpci; |
| 243 | |
| 244 | if (classmark2_lv[0] < 2) |
| 245 | return -EINVAL; |
| 246 | |
| 247 | mrpci.power_class = classmark2_lv[1] & 0x7; |
| 248 | mrpci.vgcs_capable = classmark2_lv[2] & (1 << 1); |
| 249 | mrpci.vbs_capable = classmark2_lv[2] & (1 <<2); |
| 250 | mrpci.gsm_phase = (classmark2_lv[1]) >> 5 & 0x3; |
| 251 | |
| 252 | return rsl_siemens_mrpci(lchan, &mrpci); |
| 253 | } |
| 254 | |
Holger Hans Peter Freyther | 3ee5d3e | 2009-08-21 05:18:21 +0200 | [diff] [blame] | 255 | int gsm48_paging_extract_mi(struct msgb *msg, char *mi_string, u_int8_t *mi_type) |
| 256 | { |
| 257 | struct gsm48_hdr *gh = msgb_l3(msg); |
| 258 | u_int8_t *classmark2_lv = gh->data + 1; |
| 259 | u_int8_t *mi_lv = gh->data + 2 + *classmark2_lv; |
| 260 | *mi_type = mi_lv[1] & GSM_MI_TYPE_MASK; |
| 261 | |
| 262 | return gsm48_mi_to_string(mi_string, GSM48_MI_SIZE, mi_lv+1, *mi_lv); |
| 263 | } |
| 264 | |
| 265 | int gsm48_handle_paging_resp(struct msgb *msg, struct gsm_subscriber *subscr) |
| 266 | { |
| 267 | struct gsm_bts *bts = msg->lchan->ts->trx->bts; |
| 268 | struct gsm48_hdr *gh = msgb_l3(msg); |
| 269 | u_int8_t *classmark2_lv = gh->data + 1; |
| 270 | struct paging_signal_data sig_data; |
| 271 | |
| 272 | if (is_siemens_bts(bts)) |
| 273 | send_siemens_mrpci(msg->lchan, classmark2_lv); |
| 274 | |
Holger Hans Peter Freyther | 68884aa | 2010-03-23 06:41:45 +0100 | [diff] [blame] | 275 | if (!msg->lchan->conn.subscr) { |
| 276 | msg->lchan->conn.subscr = subscr; |
| 277 | } else if (msg->lchan->conn.subscr != subscr) { |
Harald Welte | 50720e7 | 2009-12-24 11:50:20 +0100 | [diff] [blame] | 278 | LOGP(DRR, LOGL_ERROR, "<- Channel already owned by someone else?\n"); |
Holger Hans Peter Freyther | 3ee5d3e | 2009-08-21 05:18:21 +0200 | [diff] [blame] | 279 | subscr_put(subscr); |
| 280 | return -EINVAL; |
| 281 | } else { |
| 282 | DEBUGP(DRR, "<- Channel already owned by us\n"); |
| 283 | subscr_put(subscr); |
Holger Hans Peter Freyther | 68884aa | 2010-03-23 06:41:45 +0100 | [diff] [blame] | 284 | subscr = msg->lchan->conn.subscr; |
Holger Hans Peter Freyther | 3ee5d3e | 2009-08-21 05:18:21 +0200 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | sig_data.subscr = subscr; |
| 288 | sig_data.bts = msg->lchan->ts->trx->bts; |
| 289 | sig_data.lchan = msg->lchan; |
| 290 | |
Harald Welte | 24ff6ee | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 291 | bts->network->stats.paging.completed++; |
| 292 | |
Sylvain Munaut | ef24dff | 2009-12-19 12:38:10 +0100 | [diff] [blame] | 293 | dispatch_signal(SS_PAGING, S_PAGING_SUCCEEDED, &sig_data); |
Holger Hans Peter Freyther | 3ee5d3e | 2009-08-21 05:18:21 +0200 | [diff] [blame] | 294 | |
| 295 | /* Stop paging on the bts we received the paging response */ |
| 296 | paging_request_stop(msg->trx->bts, subscr, msg->lchan); |
| 297 | return 0; |
| 298 | } |
Holger Hans Peter Freyther | ea4088a | 2009-10-05 13:25:06 +0200 | [diff] [blame] | 299 | |
| 300 | /* Chapter 9.1.9: Ciphering Mode Command */ |
Holger Hans Peter Freyther | ca6bc1d | 2009-10-05 14:00:14 +0200 | [diff] [blame] | 301 | int gsm48_send_rr_ciph_mode(struct gsm_lchan *lchan, int want_imeisv) |
Holger Hans Peter Freyther | ea4088a | 2009-10-05 13:25:06 +0200 | [diff] [blame] | 302 | { |
| 303 | struct msgb *msg = gsm48_msgb_alloc(); |
| 304 | struct gsm48_hdr *gh; |
| 305 | u_int8_t ciph_mod_set; |
| 306 | |
| 307 | msg->lchan = lchan; |
| 308 | |
| 309 | DEBUGP(DRR, "TX CIPHERING MODE CMD\n"); |
| 310 | |
| 311 | if (lchan->encr.alg_id <= RSL_ENC_ALG_A5(0)) |
| 312 | ciph_mod_set = 0; |
| 313 | else |
| 314 | ciph_mod_set = (lchan->encr.alg_id-2)<<1 | 1; |
| 315 | |
| 316 | gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh) + 1); |
| 317 | gh->proto_discr = GSM48_PDISC_RR; |
| 318 | gh->msg_type = GSM48_MT_RR_CIPH_M_CMD; |
Holger Hans Peter Freyther | ca6bc1d | 2009-10-05 14:00:14 +0200 | [diff] [blame] | 319 | gh->data[0] = (want_imeisv & 0x1) << 4 | (ciph_mod_set & 0xf); |
Holger Hans Peter Freyther | ea4088a | 2009-10-05 13:25:06 +0200 | [diff] [blame] | 320 | |
| 321 | return rsl_encryption_cmd(msg); |
| 322 | } |
| 323 | |
Harald Welte | 8c83af6 | 2009-11-29 20:02:53 +0100 | [diff] [blame] | 324 | static void gsm48_cell_desc(struct gsm48_cell_desc *cd, |
| 325 | const struct gsm_bts *bts) |
| 326 | { |
| 327 | cd->ncc = (bts->bsic >> 3 & 0x7); |
| 328 | cd->bcc = (bts->bsic & 0x7); |
| 329 | cd->arfcn_hi = bts->c0->arfcn >> 8; |
| 330 | cd->arfcn_lo = bts->c0->arfcn & 0xff; |
| 331 | } |
| 332 | |
| 333 | static void gsm48_chan_desc(struct gsm48_chan_desc *cd, |
| 334 | const struct gsm_lchan *lchan) |
| 335 | { |
| 336 | u_int16_t arfcn = lchan->ts->trx->arfcn & 0x3ff; |
| 337 | |
| 338 | cd->chan_nr = lchan2chan_nr(lchan); |
| 339 | cd->h0.tsc = lchan->ts->trx->bts->tsc; |
| 340 | cd->h0.h = 0; |
| 341 | cd->h0.arfcn_high = arfcn >> 8; |
| 342 | cd->h0.arfcn_low = arfcn & 0xff; |
| 343 | } |
| 344 | |
| 345 | /* Chapter 9.1.15: Handover Command */ |
Harald Welte | 7a7a0d5 | 2009-12-17 00:25:18 +0100 | [diff] [blame] | 346 | int gsm48_send_ho_cmd(struct gsm_lchan *old_lchan, struct gsm_lchan *new_lchan, |
| 347 | u_int8_t power_command, u_int8_t ho_ref) |
Harald Welte | 8c83af6 | 2009-11-29 20:02:53 +0100 | [diff] [blame] | 348 | { |
| 349 | struct msgb *msg = gsm48_msgb_alloc(); |
| 350 | struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); |
| 351 | struct gsm48_ho_cmd *ho = |
| 352 | (struct gsm48_ho_cmd *) msgb_put(msg, sizeof(*ho)); |
Harald Welte | 8c83af6 | 2009-11-29 20:02:53 +0100 | [diff] [blame] | 353 | |
| 354 | msg->lchan = old_lchan; |
Harald Welte | 7a7a0d5 | 2009-12-17 00:25:18 +0100 | [diff] [blame] | 355 | gh->proto_discr = GSM48_PDISC_RR; |
| 356 | gh->msg_type = GSM48_MT_RR_HANDO_CMD; |
Harald Welte | 8c83af6 | 2009-11-29 20:02:53 +0100 | [diff] [blame] | 357 | |
| 358 | /* mandatory bits */ |
| 359 | gsm48_cell_desc(&ho->cell_desc, new_lchan->ts->trx->bts); |
| 360 | gsm48_chan_desc(&ho->chan_desc, new_lchan); |
Harald Welte | 7a7a0d5 | 2009-12-17 00:25:18 +0100 | [diff] [blame] | 361 | ho->ho_ref = ho_ref; |
Harald Welte | 8c83af6 | 2009-11-29 20:02:53 +0100 | [diff] [blame] | 362 | ho->power_command = power_command; |
| 363 | |
| 364 | /* FIXME: optional bits for type of synchronization? */ |
| 365 | |
| 366 | return gsm48_sendmsg(msg, NULL); |
| 367 | } |
| 368 | |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 369 | /* Chapter 9.1.2: Assignment Command */ |
Holger Hans Peter Freyther | 550197f | 2010-01-28 09:43:49 +0100 | [diff] [blame] | 370 | int gsm48_send_rr_ass_cmd(struct gsm_lchan *dest_lchan, struct gsm_lchan *lchan, u_int8_t power_command) |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 371 | { |
| 372 | struct msgb *msg = gsm48_msgb_alloc(); |
| 373 | struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); |
| 374 | struct gsm48_ass_cmd *ass = |
| 375 | (struct gsm48_ass_cmd *) msgb_put(msg, sizeof(*ass)); |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 376 | |
| 377 | DEBUGP(DRR, "-> ASSIGNMENT COMMAND tch_mode=0x%02x\n", lchan->tch_mode); |
| 378 | |
Holger Hans Peter Freyther | 550197f | 2010-01-28 09:43:49 +0100 | [diff] [blame] | 379 | msg->lchan = dest_lchan; |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 380 | gh->proto_discr = GSM48_PDISC_RR; |
| 381 | gh->msg_type = GSM48_MT_RR_ASS_CMD; |
| 382 | |
| 383 | /* |
| 384 | * fill the channel information element, this code |
| 385 | * should probably be shared with rsl_rx_chan_rqd(), |
| 386 | * gsm48_tx_chan_mode_modify. But beware that 10.5.2.5 |
| 387 | * 10.5.2.5.a have slightly different semantic for |
| 388 | * the chan_desc. But as long as multi-slot configurations |
| 389 | * are not used we seem to be fine. |
| 390 | */ |
Harald Welte | 8c83af6 | 2009-11-29 20:02:53 +0100 | [diff] [blame] | 391 | gsm48_chan_desc(&ass->chan_desc, lchan); |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 392 | ass->power_command = power_command; |
| 393 | |
Holger Hans Peter Freyther | 1b891fd | 2010-01-28 11:51:24 +0100 | [diff] [blame] | 394 | msgb_tv_put(msg, GSM48_IE_CHANMODE_1, lchan->tch_mode); |
| 395 | |
Holger Hans Peter Freyther | a6bcc74 | 2009-11-16 22:49:24 +0100 | [diff] [blame] | 396 | /* in case of multi rate we need to attach a config */ |
| 397 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 398 | if (lchan->mr_conf.ver == 0) { |
Harald Welte | 50720e7 | 2009-12-24 11:50:20 +0100 | [diff] [blame] | 399 | LOGP(DRR, LOGL_ERROR, "BUG: Using multirate codec " |
| 400 | "without multirate config.\n"); |
Holger Hans Peter Freyther | a6bcc74 | 2009-11-16 22:49:24 +0100 | [diff] [blame] | 401 | } else { |
| 402 | u_int8_t *data = msgb_put(msg, 4); |
| 403 | data[0] = GSM48_IE_MUL_RATE_CFG; |
| 404 | data[1] = 0x2; |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 405 | memcpy(&data[2], &lchan->mr_conf, 2); |
Holger Hans Peter Freyther | a6bcc74 | 2009-11-16 22:49:24 +0100 | [diff] [blame] | 406 | } |
| 407 | } |
| 408 | |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 409 | return gsm48_sendmsg(msg, NULL); |
| 410 | } |
Holger Hans Peter Freyther | ff3f260 | 2009-10-22 15:13:00 +0200 | [diff] [blame] | 411 | |
| 412 | /* 9.1.5 Channel mode modify: Modify the mode on the MS side */ |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 413 | int gsm48_tx_chan_mode_modify(struct gsm_lchan *lchan, u_int8_t mode) |
Holger Hans Peter Freyther | ff3f260 | 2009-10-22 15:13:00 +0200 | [diff] [blame] | 414 | { |
| 415 | struct msgb *msg = gsm48_msgb_alloc(); |
| 416 | struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); |
| 417 | struct gsm48_chan_mode_modify *cmm = |
| 418 | (struct gsm48_chan_mode_modify *) msgb_put(msg, sizeof(*cmm)); |
| 419 | u_int16_t arfcn = lchan->ts->trx->arfcn & 0x3ff; |
| 420 | |
| 421 | DEBUGP(DRR, "-> CHANNEL MODE MODIFY mode=0x%02x\n", mode); |
| 422 | |
| 423 | lchan->tch_mode = mode; |
| 424 | msg->lchan = lchan; |
| 425 | gh->proto_discr = GSM48_PDISC_RR; |
| 426 | gh->msg_type = GSM48_MT_RR_CHAN_MODE_MODIF; |
| 427 | |
| 428 | /* fill the channel information element, this code |
| 429 | * should probably be shared with rsl_rx_chan_rqd() */ |
| 430 | cmm->chan_desc.chan_nr = lchan2chan_nr(lchan); |
| 431 | cmm->chan_desc.h0.tsc = lchan->ts->trx->bts->tsc; |
| 432 | cmm->chan_desc.h0.h = 0; |
| 433 | cmm->chan_desc.h0.arfcn_high = arfcn >> 8; |
| 434 | cmm->chan_desc.h0.arfcn_low = arfcn & 0xff; |
| 435 | cmm->mode = mode; |
| 436 | |
Holger Hans Peter Freyther | a6bcc74 | 2009-11-16 22:49:24 +0100 | [diff] [blame] | 437 | /* in case of multi rate we need to attach a config */ |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 438 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { |
| 439 | if (lchan->mr_conf.ver == 0) { |
Harald Welte | 50720e7 | 2009-12-24 11:50:20 +0100 | [diff] [blame] | 440 | LOGP(DRR, LOGL_ERROR, "BUG: Using multirate codec " |
| 441 | "without multirate config.\n"); |
Holger Hans Peter Freyther | a6bcc74 | 2009-11-16 22:49:24 +0100 | [diff] [blame] | 442 | } else { |
| 443 | u_int8_t *data = msgb_put(msg, 4); |
| 444 | data[0] = GSM48_IE_MUL_RATE_CFG; |
| 445 | data[1] = 0x2; |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 446 | memcpy(&data[2], &lchan->mr_conf, 2); |
Holger Hans Peter Freyther | a6bcc74 | 2009-11-16 22:49:24 +0100 | [diff] [blame] | 447 | } |
| 448 | } |
| 449 | |
Holger Hans Peter Freyther | ff3f260 | 2009-10-22 15:13:00 +0200 | [diff] [blame] | 450 | return gsm48_sendmsg(msg, NULL); |
| 451 | } |
| 452 | |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 453 | int gsm48_lchan_modify(struct gsm_lchan *lchan, u_int8_t lchan_mode) |
Holger Hans Peter Freyther | ff3f260 | 2009-10-22 15:13:00 +0200 | [diff] [blame] | 454 | { |
| 455 | int rc; |
| 456 | |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 457 | rc = gsm48_tx_chan_mode_modify(lchan, lchan_mode); |
Holger Hans Peter Freyther | ff3f260 | 2009-10-22 15:13:00 +0200 | [diff] [blame] | 458 | if (rc < 0) |
| 459 | return rc; |
| 460 | |
Holger Hans Peter Freyther | ff3f260 | 2009-10-22 15:13:00 +0200 | [diff] [blame] | 461 | return rc; |
| 462 | } |
| 463 | |
Holger Hans Peter Freyther | f520e64 | 2009-10-22 15:23:11 +0200 | [diff] [blame] | 464 | int gsm48_rx_rr_modif_ack(struct msgb *msg) |
| 465 | { |
Holger Hans Peter Freyther | 25b1e25 | 2009-11-18 19:30:24 +0100 | [diff] [blame] | 466 | int rc; |
Holger Hans Peter Freyther | f520e64 | 2009-10-22 15:23:11 +0200 | [diff] [blame] | 467 | struct gsm48_hdr *gh = msgb_l3(msg); |
| 468 | struct gsm48_chan_mode_modify *mod = |
| 469 | (struct gsm48_chan_mode_modify *) gh->data; |
| 470 | |
| 471 | DEBUGP(DRR, "CHANNEL MODE MODIFY ACK\n"); |
| 472 | |
| 473 | if (mod->mode != msg->lchan->tch_mode) { |
Harald Welte | 50720e7 | 2009-12-24 11:50:20 +0100 | [diff] [blame] | 474 | LOGP(DRR, LOGL_ERROR, "CHANNEL MODE change failed. Wanted: %d Got: %d\n", |
Holger Hans Peter Freyther | f520e64 | 2009-10-22 15:23:11 +0200 | [diff] [blame] | 475 | msg->lchan->tch_mode, mod->mode); |
| 476 | return -1; |
| 477 | } |
| 478 | |
| 479 | /* update the channel type */ |
| 480 | switch (mod->mode) { |
| 481 | case GSM48_CMODE_SIGN: |
| 482 | msg->lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
| 483 | break; |
| 484 | case GSM48_CMODE_SPEECH_V1: |
| 485 | case GSM48_CMODE_SPEECH_EFR: |
| 486 | case GSM48_CMODE_SPEECH_AMR: |
| 487 | msg->lchan->rsl_cmode = RSL_CMOD_SPD_SPEECH; |
| 488 | break; |
| 489 | case GSM48_CMODE_DATA_14k5: |
| 490 | case GSM48_CMODE_DATA_12k0: |
| 491 | case GSM48_CMODE_DATA_6k0: |
| 492 | case GSM48_CMODE_DATA_3k6: |
| 493 | msg->lchan->rsl_cmode = RSL_CMOD_SPD_DATA; |
| 494 | break; |
| 495 | } |
| 496 | |
| 497 | /* We've successfully modified the MS side of the channel, |
| 498 | * now go on to modify the BTS side of the channel */ |
Holger Hans Peter Freyther | 25b1e25 | 2009-11-18 19:30:24 +0100 | [diff] [blame] | 499 | rc = rsl_chan_mode_modify_req(msg->lchan); |
| 500 | |
| 501 | /* FIXME: we not only need to do this after mode modify, but |
| 502 | * also after channel activation */ |
| 503 | if (is_ipaccess_bts(msg->lchan->ts->trx->bts) && mod->mode != GSM48_CMODE_SIGN) |
| 504 | rsl_ipacc_crcx(msg->lchan); |
| 505 | return rc; |
Holger Hans Peter Freyther | f520e64 | 2009-10-22 15:23:11 +0200 | [diff] [blame] | 506 | } |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 507 | |
| 508 | int gsm48_parse_meas_rep(struct gsm_meas_rep *rep, struct msgb *msg) |
| 509 | { |
| 510 | struct gsm48_hdr *gh = msgb_l3(msg); |
| 511 | unsigned int payload_len = msgb_l3len(msg) - sizeof(*gh); |
| 512 | u_int8_t *data = gh->data; |
| 513 | struct gsm_bts *bts = msg->lchan->ts->trx->bts; |
| 514 | struct bitvec *nbv = &bts->si_common.neigh_list; |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 515 | struct gsm_meas_rep_cell *mrc; |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 516 | |
| 517 | if (gh->msg_type != GSM48_MT_RR_MEAS_REP) |
| 518 | return -EINVAL; |
| 519 | |
| 520 | if (data[0] & 0x80) |
| 521 | rep->flags |= MEAS_REP_F_BA1; |
| 522 | if (data[0] & 0x40) |
| 523 | rep->flags |= MEAS_REP_F_UL_DTX; |
| 524 | if ((data[1] & 0x40) == 0x00) |
| 525 | rep->flags |= MEAS_REP_F_DL_VALID; |
| 526 | |
| 527 | rep->dl.full.rx_lev = data[0] & 0x3f; |
| 528 | rep->dl.sub.rx_lev = data[1] & 0x3f; |
| 529 | rep->dl.full.rx_qual = (data[3] >> 4) & 0x7; |
| 530 | rep->dl.sub.rx_qual = (data[3] >> 1) & 0x7; |
| 531 | |
| 532 | rep->num_cell = ((data[3] >> 6) & 0x3) | ((data[2] & 0x01) << 2); |
| 533 | if (rep->num_cell < 1 || rep->num_cell > 6) |
| 534 | return 0; |
| 535 | |
| 536 | /* an encoding nightmare in perfection */ |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 537 | mrc = &rep->cell[0]; |
| 538 | mrc->rxlev = data[3] & 0x3f; |
Harald Welte | 950eca9 | 2009-12-25 22:49:34 +0100 | [diff] [blame] | 539 | mrc->neigh_idx = data[4] >> 3; |
Harald Welte | eaa95d5 | 2009-12-25 23:01:54 +0100 | [diff] [blame] | 540 | mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 541 | mrc->bsic = ((data[4] & 0x07) << 3) | (data[5] >> 5); |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 542 | if (rep->num_cell < 2) |
| 543 | return 0; |
| 544 | |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 545 | mrc = &rep->cell[1]; |
| 546 | mrc->rxlev = ((data[5] & 0x1f) << 1) | (data[6] >> 7); |
Harald Welte | 950eca9 | 2009-12-25 22:49:34 +0100 | [diff] [blame] | 547 | mrc->neigh_idx = (data[6] >> 2) & 0x1f; |
Harald Welte | eaa95d5 | 2009-12-25 23:01:54 +0100 | [diff] [blame] | 548 | mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 549 | mrc->bsic = ((data[6] & 0x03) << 4) | (data[7] >> 4); |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 550 | if (rep->num_cell < 3) |
| 551 | return 0; |
| 552 | |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 553 | mrc = &rep->cell[2]; |
| 554 | mrc->rxlev = ((data[7] & 0x0f) << 2) | (data[8] >> 6); |
Harald Welte | 950eca9 | 2009-12-25 22:49:34 +0100 | [diff] [blame] | 555 | mrc->neigh_idx = (data[8] >> 1) & 0x1f; |
Harald Welte | eaa95d5 | 2009-12-25 23:01:54 +0100 | [diff] [blame] | 556 | mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); |
Harald Welte (local) | 6589858 | 2009-12-26 14:12:43 +0100 | [diff] [blame] | 557 | mrc->bsic = ((data[8] & 0x01) << 5) | (data[9] >> 3); |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 558 | if (rep->num_cell < 4) |
| 559 | return 0; |
| 560 | |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 561 | mrc = &rep->cell[3]; |
| 562 | mrc->rxlev = ((data[9] & 0x07) << 3) | (data[10] >> 5); |
Harald Welte | 950eca9 | 2009-12-25 22:49:34 +0100 | [diff] [blame] | 563 | mrc->neigh_idx = data[10] & 0x1f; |
Harald Welte | eaa95d5 | 2009-12-25 23:01:54 +0100 | [diff] [blame] | 564 | mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 565 | mrc->bsic = data[11] >> 2; |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 566 | if (rep->num_cell < 5) |
| 567 | return 0; |
| 568 | |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 569 | mrc = &rep->cell[4]; |
| 570 | mrc->rxlev = ((data[11] & 0x03) << 4) | (data[12] >> 4); |
Harald Welte | 950eca9 | 2009-12-25 22:49:34 +0100 | [diff] [blame] | 571 | mrc->neigh_idx = ((data[12] & 0xf) << 1) | (data[13] >> 7); |
Harald Welte | eaa95d5 | 2009-12-25 23:01:54 +0100 | [diff] [blame] | 572 | mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 573 | mrc->bsic = (data[13] >> 1) & 0x3f; |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 574 | if (rep->num_cell < 6) |
| 575 | return 0; |
| 576 | |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 577 | mrc = &rep->cell[5]; |
Harald Welte | 950eca9 | 2009-12-25 22:49:34 +0100 | [diff] [blame] | 578 | mrc->rxlev = ((data[13] & 0x01) << 5) | (data[14] >> 3); |
| 579 | mrc->neigh_idx = ((data[14] & 0x07) << 2) | (data[15] >> 6); |
Harald Welte | eaa95d5 | 2009-12-25 23:01:54 +0100 | [diff] [blame] | 580 | mrc->arfcn = bitvec_get_nth_set_bit(nbv, mrc->neigh_idx + 1); |
Harald Welte | a06c35e | 2009-12-25 22:46:25 +0100 | [diff] [blame] | 581 | mrc->bsic = data[15] & 0x3f; |
Holger Hans Peter Freyther | 92ffd92 | 2009-12-22 07:45:17 +0100 | [diff] [blame] | 582 | |
| 583 | return 0; |
| 584 | } |