Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1 | /* GSM Radio Signalling Link messages on the A-bis interface |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2 | * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ |
| 3 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 4 | /* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <errno.h> |
| 27 | #include <sys/types.h> |
| 28 | #include <netinet/in.h> |
| 29 | #include <arpa/inet.h> |
| 30 | |
| 31 | #include <openbsc/gsm_data.h> |
| 32 | #include <openbsc/gsm_04_08.h> |
Harald Welte | f4625b1 | 2010-02-20 16:24:02 +0100 | [diff] [blame] | 33 | #include <osmocore/gsm_utils.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 34 | #include <openbsc/abis_rsl.h> |
| 35 | #include <openbsc/chan_alloc.h> |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 36 | #include <openbsc/bsc_rll.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 37 | #include <openbsc/debug.h> |
Harald Welte | f4625b1 | 2010-02-20 16:24:02 +0100 | [diff] [blame] | 38 | #include <osmocore/tlv.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 39 | #include <openbsc/paging.h> |
| 40 | #include <openbsc/signal.h> |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 41 | #include <openbsc/meas_rep.h> |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 42 | #include <openbsc/rtp_proxy.h> |
Harald Welte | 1fa8bac | 2010-03-01 21:59:06 +0100 | [diff] [blame] | 43 | #include <osmocore/rsl.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 44 | |
| 45 | #define RSL_ALLOC_SIZE 1024 |
| 46 | #define RSL_ALLOC_HEADROOM 128 |
| 47 | |
| 48 | #define MAX(a, b) (a) >= (b) ? (a) : (b) |
| 49 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 50 | static u_int8_t mdisc_by_msgtype(u_int8_t msg_type) |
| 51 | { |
| 52 | /* mask off the transparent bit ? */ |
| 53 | msg_type &= 0xfe; |
| 54 | |
| 55 | if ((msg_type & 0xf0) == 0x00) |
| 56 | return ABIS_RSL_MDISC_RLL; |
| 57 | if ((msg_type & 0xf0) == 0x10) { |
| 58 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 59 | return ABIS_RSL_MDISC_TRX; |
| 60 | else |
| 61 | return ABIS_RSL_MDISC_COM_CHAN; |
| 62 | } |
| 63 | if ((msg_type & 0xe0) == 0x20) |
| 64 | return ABIS_RSL_MDISC_DED_CHAN; |
| 65 | |
| 66 | return ABIS_RSL_MDISC_LOC; |
| 67 | } |
| 68 | |
| 69 | static inline void init_dchan_hdr(struct abis_rsl_dchan_hdr *dh, |
| 70 | u_int8_t msg_type) |
| 71 | { |
| 72 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 73 | dh->c.msg_type = msg_type; |
| 74 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 75 | } |
| 76 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 77 | /* determine logical channel based on TRX and channel number IE */ |
| 78 | struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, u_int8_t chan_nr) |
| 79 | { |
| 80 | struct gsm_lchan *lchan; |
| 81 | u_int8_t ts_nr = chan_nr & 0x07; |
| 82 | u_int8_t cbits = chan_nr >> 3; |
| 83 | u_int8_t lch_idx; |
| 84 | struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| 85 | |
| 86 | if (cbits == 0x01) { |
| 87 | lch_idx = 0; /* TCH/F */ |
Harald Welte | 37884ed | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 88 | if (ts->pchan != GSM_PCHAN_TCH_F && |
| 89 | ts->pchan != GSM_PCHAN_PDCH && |
| 90 | ts->pchan != GSM_PCHAN_TCH_F_PDCH) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 91 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 92 | chan_nr, ts->pchan); |
| 93 | } else if ((cbits & 0x1e) == 0x02) { |
| 94 | lch_idx = cbits & 0x1; /* TCH/H */ |
| 95 | if (ts->pchan != GSM_PCHAN_TCH_H) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 96 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 97 | chan_nr, ts->pchan); |
| 98 | } else if ((cbits & 0x1c) == 0x04) { |
| 99 | lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| 100 | if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 101 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 102 | chan_nr, ts->pchan); |
| 103 | } else if ((cbits & 0x18) == 0x08) { |
| 104 | lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| 105 | if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 106 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 107 | chan_nr, ts->pchan); |
| 108 | } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| 109 | lch_idx = 0; |
| 110 | if (ts->pchan != GSM_PCHAN_CCCH && |
| 111 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 112 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 113 | chan_nr, ts->pchan); |
| 114 | /* FIXME: we should not return first sdcch4 !!! */ |
| 115 | } else { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 116 | LOGP(DRSL, LOGL_ERROR, "unknown chan_nr=0x%02x\n", chan_nr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 117 | return NULL; |
| 118 | } |
| 119 | |
| 120 | lchan = &ts->lchan[lch_idx]; |
Harald Welte | 51d2a59 | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 121 | log_set_context(BSC_CTX_LCHAN, lchan); |
| 122 | log_set_context(BSC_CTX_SUBSCR, lchan->conn.subscr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 123 | |
| 124 | return lchan; |
| 125 | } |
| 126 | |
Holger Hans Peter Freyther | 942ff17 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 127 | /* See Table 10.5.25 of GSM04.08 */ |
Harald Welte | b558624 | 2009-12-09 19:18:32 +0100 | [diff] [blame] | 128 | u_int8_t lchan2chan_nr(const struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 129 | { |
| 130 | struct gsm_bts_trx_ts *ts = lchan->ts; |
| 131 | u_int8_t cbits, chan_nr; |
| 132 | |
| 133 | switch (ts->pchan) { |
| 134 | case GSM_PCHAN_TCH_F: |
Harald Welte | 37884ed | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 135 | case GSM_PCHAN_PDCH: |
| 136 | case GSM_PCHAN_TCH_F_PDCH: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 137 | cbits = 0x01; |
| 138 | break; |
| 139 | case GSM_PCHAN_TCH_H: |
| 140 | cbits = 0x02; |
| 141 | cbits += lchan->nr; |
| 142 | break; |
| 143 | case GSM_PCHAN_CCCH_SDCCH4: |
| 144 | cbits = 0x04; |
| 145 | cbits += lchan->nr; |
| 146 | break; |
| 147 | case GSM_PCHAN_SDCCH8_SACCH8C: |
| 148 | cbits = 0x08; |
| 149 | cbits += lchan->nr; |
| 150 | break; |
| 151 | default: |
| 152 | case GSM_PCHAN_CCCH: |
| 153 | cbits = 0x10; |
| 154 | break; |
| 155 | } |
| 156 | |
| 157 | chan_nr = (cbits << 3) | (ts->nr & 0x7); |
| 158 | |
| 159 | return chan_nr; |
| 160 | } |
| 161 | |
| 162 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
| 163 | u_int64_t str_to_imsi(const char *imsi_str) |
| 164 | { |
| 165 | u_int64_t ret; |
| 166 | |
| 167 | ret = strtoull(imsi_str, NULL, 10); |
| 168 | |
| 169 | return ret; |
| 170 | } |
| 171 | |
| 172 | /* Table 5 Clause 7 TS 05.02 */ |
| 173 | unsigned int n_pag_blocks(int bs_ccch_sdcch_comb, unsigned int bs_ag_blks_res) |
| 174 | { |
| 175 | if (!bs_ccch_sdcch_comb) |
| 176 | return 9 - bs_ag_blks_res; |
| 177 | else |
| 178 | return 3 - bs_ag_blks_res; |
| 179 | } |
| 180 | |
| 181 | /* Chapter 6.5.2 of TS 05.02 */ |
| 182 | unsigned int get_ccch_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 183 | unsigned int n_pag_blocks) |
| 184 | { |
| 185 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) / n_pag_blocks; |
| 186 | } |
| 187 | |
| 188 | /* Chapter 6.5.2 of TS 05.02 */ |
| 189 | unsigned int get_paging_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 190 | int n_pag_blocks) |
| 191 | { |
| 192 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) % n_pag_blocks; |
| 193 | } |
| 194 | |
| 195 | static struct msgb *rsl_msgb_alloc(void) |
| 196 | { |
Harald Welte | 9cfc935 | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 197 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 198 | "RSL"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | #define MACBLOCK_SIZE 23 |
| 202 | static void pad_macblock(u_int8_t *out, const u_int8_t *in, int len) |
| 203 | { |
| 204 | memcpy(out, in, len); |
| 205 | |
| 206 | if (len < MACBLOCK_SIZE) |
| 207 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 208 | } |
| 209 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 210 | /* Chapter 9.3.7: Encryption Information */ |
| 211 | static int build_encr_info(u_int8_t *out, struct gsm_lchan *lchan) |
| 212 | { |
| 213 | *out++ = lchan->encr.alg_id & 0xff; |
| 214 | if (lchan->encr.key_len) |
| 215 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 216 | return lchan->encr.key_len + 1; |
| 217 | } |
| 218 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 219 | static void print_rsl_cause(int lvl, const u_int8_t *cause_v, u_int8_t cause_len) |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 220 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 221 | int i; |
| 222 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 223 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 224 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 225 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 226 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
| 230 | int rsl_bcch_info(struct gsm_bts_trx *trx, u_int8_t type, |
| 231 | const u_int8_t *data, int len) |
| 232 | { |
| 233 | struct abis_rsl_dchan_hdr *dh; |
| 234 | struct msgb *msg = rsl_msgb_alloc(); |
| 235 | |
| 236 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 237 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 238 | dh->chan_nr = RSL_CHAN_BCCH; |
| 239 | |
| 240 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 241 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 242 | |
| 243 | msg->trx = trx; |
| 244 | |
| 245 | return abis_rsl_sendmsg(msg); |
| 246 | } |
| 247 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 248 | int rsl_sacch_filling(struct gsm_bts_trx *trx, u_int8_t type, |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 249 | const u_int8_t *data, int len) |
| 250 | { |
| 251 | struct abis_rsl_common_hdr *ch; |
| 252 | struct msgb *msg = rsl_msgb_alloc(); |
| 253 | |
| 254 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 255 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 256 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 257 | |
| 258 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 259 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 260 | |
| 261 | msg->trx = trx; |
| 262 | |
| 263 | return abis_rsl_sendmsg(msg); |
| 264 | } |
| 265 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 266 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 267 | { |
| 268 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 269 | struct msgb *msg; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 270 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 271 | |
| 272 | db = abs(db); |
| 273 | if (db > 30) |
| 274 | return -EINVAL; |
| 275 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 276 | msg = rsl_msgb_alloc(); |
| 277 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 278 | lchan->bs_power = db/2; |
| 279 | if (fpc) |
| 280 | lchan->bs_power |= 0x10; |
| 281 | |
| 282 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 283 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 284 | dh->chan_nr = chan_nr; |
| 285 | |
| 286 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 287 | |
| 288 | msg->trx = lchan->ts->trx; |
| 289 | |
| 290 | return abis_rsl_sendmsg(msg); |
| 291 | } |
| 292 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 293 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 294 | { |
| 295 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 296 | struct msgb *msg; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 297 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 298 | int ctl_lvl; |
| 299 | |
Harald Welte | c4dcda0 | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 300 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 301 | if (ctl_lvl < 0) |
| 302 | return ctl_lvl; |
| 303 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 304 | msg = rsl_msgb_alloc(); |
| 305 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 306 | lchan->ms_power = ctl_lvl; |
| 307 | |
| 308 | if (fpc) |
| 309 | lchan->ms_power |= 0x20; |
| 310 | |
| 311 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 312 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 313 | dh->chan_nr = chan_nr; |
| 314 | |
| 315 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 316 | |
| 317 | msg->trx = lchan->ts->trx; |
| 318 | |
| 319 | return abis_rsl_sendmsg(msg); |
| 320 | } |
| 321 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 322 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 323 | struct gsm_lchan *lchan) |
| 324 | { |
| 325 | memset(cm, 0, sizeof(cm)); |
| 326 | |
| 327 | /* FIXME: what to do with data calls ? */ |
| 328 | cm->dtx_dtu = 0x00; |
| 329 | |
| 330 | /* set TCH Speech/Data */ |
| 331 | cm->spd_ind = lchan->rsl_cmode; |
| 332 | |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 333 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 334 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 335 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 336 | "but tch_mode != signalling\n"); |
| 337 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 338 | switch (lchan->type) { |
| 339 | case GSM_LCHAN_SDCCH: |
| 340 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 341 | break; |
| 342 | case GSM_LCHAN_TCH_F: |
| 343 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 344 | break; |
| 345 | case GSM_LCHAN_TCH_H: |
| 346 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 347 | break; |
| 348 | case GSM_LCHAN_NONE: |
| 349 | case GSM_LCHAN_UNKNOWN: |
| 350 | default: |
| 351 | return -EINVAL; |
| 352 | } |
| 353 | |
| 354 | switch (lchan->tch_mode) { |
| 355 | case GSM48_CMODE_SIGN: |
| 356 | cm->chan_rate = 0; |
| 357 | break; |
| 358 | case GSM48_CMODE_SPEECH_V1: |
| 359 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 360 | break; |
| 361 | case GSM48_CMODE_SPEECH_EFR: |
| 362 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 363 | break; |
| 364 | case GSM48_CMODE_SPEECH_AMR: |
| 365 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 366 | break; |
| 367 | case GSM48_CMODE_DATA_14k5: |
| 368 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 369 | break; |
| 370 | case GSM48_CMODE_DATA_12k0: |
| 371 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 372 | break; |
| 373 | case GSM48_CMODE_DATA_6k0: |
| 374 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 375 | break; |
| 376 | default: |
| 377 | return -EINVAL; |
| 378 | } |
| 379 | |
| 380 | return 0; |
| 381 | } |
| 382 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 383 | /* Chapter 8.4.1 */ |
| 384 | #if 0 |
| 385 | int rsl_chan_activate(struct gsm_bts_trx *trx, u_int8_t chan_nr, |
| 386 | u_int8_t act_type, |
| 387 | struct rsl_ie_chan_mode *chan_mode, |
| 388 | struct rsl_ie_chan_ident *chan_ident, |
| 389 | u_int8_t bs_power, u_int8_t ms_power, |
| 390 | u_int8_t ta) |
| 391 | { |
| 392 | struct abis_rsl_dchan_hdr *dh; |
| 393 | struct msgb *msg = rsl_msgb_alloc(); |
| 394 | |
| 395 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 396 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 397 | dh->chan_nr = chan_nr; |
| 398 | |
| 399 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
| 400 | /* For compatibility with Phase 1 */ |
| 401 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(*chan_mode), |
| 402 | (u_int8_t *) chan_mode); |
| 403 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
| 404 | (u_int8_t *) chan_ident); |
| 405 | #if 0 |
| 406 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
| 407 | (u_int8_t *) &encr_info); |
| 408 | #endif |
| 409 | msgb_tv_put(msg, RSL_IE_BS_POWER, bs_power); |
| 410 | msgb_tv_put(msg, RSL_IE_MS_POWER, ms_power); |
| 411 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 412 | |
| 413 | msg->trx = trx; |
| 414 | |
| 415 | return abis_rsl_sendmsg(msg); |
| 416 | } |
| 417 | #endif |
| 418 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 419 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, u_int8_t act_type, |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 420 | u_int8_t ta, u_int8_t ho_ref) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 421 | { |
| 422 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 423 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 424 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 425 | |
| 426 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 427 | u_int16_t arfcn = lchan->ts->trx->arfcn; |
| 428 | struct rsl_ie_chan_mode cm; |
| 429 | struct rsl_ie_chan_ident ci; |
| 430 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 431 | rc = channel_mode_from_lchan(&cm, lchan); |
| 432 | if (rc < 0) |
| 433 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 434 | |
| 435 | memset(&ci, 0, sizeof(ci)); |
| 436 | ci.chan_desc.iei = 0x64; |
| 437 | ci.chan_desc.chan_nr = chan_nr; |
| 438 | ci.chan_desc.oct3 = (lchan->ts->trx->bts->tsc << 5) | ((arfcn & 0x3ff) >> 8); |
| 439 | ci.chan_desc.oct4 = arfcn & 0xff; |
| 440 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 441 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 442 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 443 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 444 | dh->chan_nr = chan_nr; |
| 445 | |
| 446 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 447 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 448 | (u_int8_t *) &cm); |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 449 | /* For compatibility with Phase 1 */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 450 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
| 451 | (u_int8_t *) &ci); |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 452 | |
| 453 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
| 454 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 455 | rc = build_encr_info(encr_info, lchan); |
| 456 | if (rc > 0) |
| 457 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 458 | } |
| 459 | |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 460 | switch (act_type) { |
| 461 | case RSL_ACT_INTER_ASYNC: |
| 462 | case RSL_ACT_INTER_SYNC: |
| 463 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 464 | break; |
| 465 | default: |
| 466 | break; |
| 467 | } |
| 468 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 469 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 470 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 471 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 472 | |
Holger Hans Peter Freyther | 6fe8ab9 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 473 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 474 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
| 475 | (u_int8_t *) &lchan->mr_conf); |
| 476 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 477 | msg->trx = lchan->ts->trx; |
| 478 | |
| 479 | return abis_rsl_sendmsg(msg); |
| 480 | } |
| 481 | |
Harald Welte | 8e77049 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 482 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 483 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 484 | { |
| 485 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 486 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 487 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 488 | |
| 489 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 490 | struct rsl_ie_chan_mode cm; |
| 491 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 492 | rc = channel_mode_from_lchan(&cm, lchan); |
| 493 | if (rc < 0) |
| 494 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 495 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 496 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 497 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 498 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 499 | dh->chan_nr = chan_nr; |
| 500 | |
| 501 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 502 | (u_int8_t *) &cm); |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 503 | |
| 504 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
| 505 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 506 | rc = build_encr_info(encr_info, lchan); |
| 507 | if (rc > 0) |
| 508 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 509 | } |
| 510 | |
Holger Hans Peter Freyther | 3cce58f | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 511 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { |
| 512 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
| 513 | (u_int8_t *) &lchan->mr_conf); |
| 514 | } |
| 515 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 516 | msg->trx = lchan->ts->trx; |
| 517 | |
| 518 | return abis_rsl_sendmsg(msg); |
| 519 | } |
| 520 | |
| 521 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 522 | int rsl_encryption_cmd(struct msgb *msg) |
| 523 | { |
| 524 | struct abis_rsl_dchan_hdr *dh; |
| 525 | struct gsm_lchan *lchan = msg->lchan; |
| 526 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 527 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
Sylvain Munaut | 01f1caf | 2009-09-27 11:13:18 +0200 | [diff] [blame] | 528 | u_int8_t l3_len = msg->len; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 529 | int rc; |
| 530 | |
| 531 | /* First push the L3 IE tag and length */ |
| 532 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 533 | |
| 534 | /* then the link identifier (SAPI0, main sign link) */ |
| 535 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 536 | |
| 537 | /* then encryption information */ |
| 538 | rc = build_encr_info(encr_info, lchan); |
| 539 | if (rc <= 0) |
| 540 | return rc; |
| 541 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 542 | |
| 543 | /* and finally the DCHAN header */ |
| 544 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 545 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 546 | dh->chan_nr = chan_nr; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 547 | |
| 548 | msg->trx = lchan->ts->trx; |
| 549 | |
| 550 | return abis_rsl_sendmsg(msg); |
| 551 | } |
| 552 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 553 | /* Chapter 8.4.5 / 4.6: Deactivate the SACCH after 04.08 RR CHAN RELEASE */ |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 554 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 555 | { |
| 556 | struct abis_rsl_dchan_hdr *dh; |
| 557 | struct msgb *msg = rsl_msgb_alloc(); |
| 558 | |
| 559 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 560 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
| 561 | dh->chan_nr = lchan2chan_nr(lchan); |
| 562 | |
| 563 | msg->lchan = lchan; |
| 564 | msg->trx = lchan->ts->trx; |
| 565 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 566 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 567 | |
| 568 | return abis_rsl_sendmsg(msg); |
| 569 | } |
| 570 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 571 | /* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */ |
| 572 | int rsl_rf_chan_release(struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 573 | { |
| 574 | struct abis_rsl_dchan_hdr *dh; |
| 575 | struct msgb *msg = rsl_msgb_alloc(); |
| 576 | |
| 577 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 578 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
| 579 | dh->chan_nr = lchan2chan_nr(lchan); |
| 580 | |
| 581 | msg->lchan = lchan; |
| 582 | msg->trx = lchan->ts->trx; |
| 583 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 584 | DEBUGP(DRSL, "%s RF Channel Release CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 585 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 586 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 587 | return abis_rsl_sendmsg(msg); |
| 588 | } |
| 589 | |
| 590 | int rsl_paging_cmd(struct gsm_bts *bts, u_int8_t paging_group, u_int8_t len, |
| 591 | u_int8_t *ms_ident, u_int8_t chan_needed) |
| 592 | { |
| 593 | struct abis_rsl_dchan_hdr *dh; |
| 594 | struct msgb *msg = rsl_msgb_alloc(); |
| 595 | |
| 596 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 597 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 598 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 599 | |
| 600 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
| 601 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
| 602 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 603 | |
| 604 | msg->trx = bts->c0; |
| 605 | |
| 606 | return abis_rsl_sendmsg(msg); |
| 607 | } |
| 608 | |
| 609 | int rsl_paging_cmd_subscr(struct gsm_bts *bts, u_int8_t chan_need, |
| 610 | struct gsm_subscriber *subscr) |
| 611 | { |
| 612 | #if 0 |
| 613 | u_int8_t mi[128]; |
| 614 | unsigned int mi_len; |
| 615 | u_int8_t paging_group; |
| 616 | #endif |
| 617 | |
| 618 | return -1; |
| 619 | } |
| 620 | |
| 621 | int imsi_str2bcd(u_int8_t *bcd_out, const char *str_in) |
| 622 | { |
| 623 | int i, len = strlen(str_in); |
| 624 | |
| 625 | for (i = 0; i < len; i++) { |
| 626 | int num = str_in[i] - 0x30; |
| 627 | if (num < 0 || num > 9) |
| 628 | return -1; |
| 629 | if (i % 2 == 0) |
| 630 | bcd_out[i/2] = num; |
| 631 | else |
| 632 | bcd_out[i/2] |= (num << 4); |
| 633 | } |
| 634 | |
| 635 | return 0; |
| 636 | } |
| 637 | |
| 638 | /* Chapter 8.5.6 */ |
| 639 | int rsl_imm_assign_cmd(struct gsm_bts *bts, u_int8_t len, u_int8_t *val) |
| 640 | { |
| 641 | struct msgb *msg = rsl_msgb_alloc(); |
| 642 | struct abis_rsl_dchan_hdr *dh; |
| 643 | u_int8_t buf[MACBLOCK_SIZE]; |
| 644 | |
| 645 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 646 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 647 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 648 | |
| 649 | switch (bts->type) { |
| 650 | case GSM_BTS_TYPE_BS11: |
| 651 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 652 | break; |
| 653 | default: |
| 654 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 655 | pad_macblock(buf, val, len); |
| 656 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 657 | break; |
| 658 | } |
| 659 | |
| 660 | msg->trx = bts->c0; |
| 661 | |
| 662 | return abis_rsl_sendmsg(msg); |
| 663 | } |
| 664 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 665 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 1209075 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 666 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 667 | { |
| 668 | struct msgb *msg = rsl_msgb_alloc(); |
| 669 | struct abis_rsl_dchan_hdr *dh; |
| 670 | |
| 671 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 672 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 673 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 674 | dh->chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 1209075 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 675 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(u_int8_t *)mrpci); |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 676 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 677 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 678 | gsm_lchan_name(lchan), *(u_int8_t *)mrpci); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 679 | |
| 680 | msg->trx = lchan->ts->trx; |
| 681 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 682 | return abis_rsl_sendmsg(msg); |
| 683 | } |
| 684 | |
| 685 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 686 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
| 687 | /* Chapter 8.3.1 */ |
| 688 | int rsl_data_request(struct msgb *msg, u_int8_t link_id) |
| 689 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 690 | if (msg->lchan == NULL) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 691 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 692 | return -EINVAL; |
| 693 | } |
| 694 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 695 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, lchan2chan_nr(msg->lchan), |
| 696 | link_id, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 697 | |
| 698 | msg->trx = msg->lchan->ts->trx; |
| 699 | |
| 700 | return abis_rsl_sendmsg(msg); |
| 701 | } |
| 702 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 703 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 704 | /* Chapter 8.3.1 */ |
| 705 | int rsl_establish_request(struct gsm_lchan *lchan, u_int8_t link_id) |
| 706 | { |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 707 | struct msgb *msg; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 708 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 709 | msg = rsl_rll_simple(RSL_MT_EST_REQ, lchan2chan_nr(lchan), |
| 710 | link_id, 0); |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 711 | msg->trx = lchan->ts->trx; |
| 712 | |
| 713 | return abis_rsl_sendmsg(msg); |
| 714 | } |
| 715 | |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 716 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 717 | This is what higher layers should call. The BTS then responds with |
| 718 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 719 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 720 | lchan_free() */ |
| 721 | int rsl_release_request(struct gsm_lchan *lchan, u_int8_t link_id) |
| 722 | { |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 723 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 724 | struct msgb *msg; |
| 725 | |
| 726 | msg = rsl_rll_simple(RSL_MT_REL_REQ, lchan2chan_nr(lchan), |
| 727 | link_id, 0); |
Harald Welte | ad73856 | 2009-08-10 00:19:36 +0200 | [diff] [blame] | 728 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, 0); /* normal release */ |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 729 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 730 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 731 | |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 732 | msg->trx = lchan->ts->trx; |
| 733 | |
| 734 | return abis_rsl_sendmsg(msg); |
| 735 | } |
| 736 | |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 737 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 738 | { |
| 739 | lchan->state = state; |
| 740 | return 0; |
| 741 | } |
| 742 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 743 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 744 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 745 | { |
| 746 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 747 | |
| 748 | /* BTS has confirmed channel activation, we now need |
| 749 | * to assign the activated channel to the MS */ |
| 750 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 751 | return -EINVAL; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 752 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 753 | if (msg->lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 754 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
| 755 | gsm_lchan_name(msg->lchan), |
| 756 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 757 | rsl_lchan_set_state(msg->lchan, LCHAN_S_ACTIVE); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 758 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 759 | dispatch_signal(SS_LCHAN, S_LCHAN_ACTIVATE_ACK, msg->lchan); |
| 760 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 761 | return 0; |
| 762 | } |
| 763 | |
| 764 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 765 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 766 | { |
| 767 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 768 | struct tlv_parsed tp; |
| 769 | |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 770 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 771 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 772 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 773 | /* BTS has rejected channel activation ?!? */ |
| 774 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
| 775 | return -EINVAL; |
| 776 | |
| 777 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 778 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
| 779 | const u_int8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
| 780 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 781 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 782 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 783 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 784 | } else |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 785 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 786 | |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 787 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 788 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 789 | dispatch_signal(SS_LCHAN, S_LCHAN_ACTIVATE_NACK, msg->lchan); |
| 790 | |
Harald Welte | cddb980 | 2009-08-09 19:50:08 +0200 | [diff] [blame] | 791 | lchan_free(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 792 | return 0; |
| 793 | } |
| 794 | |
| 795 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 796 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 797 | { |
| 798 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 799 | struct tlv_parsed tp; |
| 800 | |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 801 | /* FIXME: print which channel */ |
Harald Welte (local) | 4bd7664 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 802 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING ", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 803 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 804 | |
| 805 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 806 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 807 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 808 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 809 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 810 | |
Harald Welte (local) | 4bd7664 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 811 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 812 | /* FIXME: only free it after channel release ACK */ |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 813 | counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rf_fail); |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 814 | return rsl_rf_chan_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 815 | } |
| 816 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 817 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 818 | const char *prefix) |
| 819 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 820 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 821 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 822 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 823 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 824 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 825 | } |
| 826 | |
| 827 | static void print_meas_rep(struct gsm_meas_rep *mr) |
| 828 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 829 | int i; |
| 830 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 831 | DEBUGP(DMEAS, "MEASUREMENT RESULT NR=%d ", mr->nr); |
| 832 | |
| 833 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 834 | DEBUGPC(DMEAS, "DTXd "); |
| 835 | |
| 836 | print_meas_rep_uni(&mr->ul, "ul"); |
| 837 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 838 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 839 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 840 | |
| 841 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 842 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 843 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 844 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 845 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 846 | } |
| 847 | |
| 848 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 849 | DEBUGPC(DMEAS, "DTXu "); |
| 850 | if (mr->flags & MEAS_REP_F_BA1) |
| 851 | DEBUGPC(DMEAS, "BA1 "); |
| 852 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 853 | DEBUGPC(DMEAS, "NOT VALID "); |
| 854 | else |
| 855 | print_meas_rep_uni(&mr->dl, "dl"); |
| 856 | |
| 857 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 0b833f8 | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 858 | if (mr->num_cell == 7) |
| 859 | return; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 860 | for (i = 0; i < mr->num_cell; i++) { |
| 861 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 350c2d3 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 862 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 863 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 864 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 865 | } |
| 866 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 867 | static int rsl_rx_meas_res(struct msgb *msg) |
| 868 | { |
| 869 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 870 | struct tlv_parsed tp; |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 871 | struct gsm_meas_rep *mr = lchan_next_meas_rep(msg->lchan); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 872 | u_int8_t len; |
| 873 | const u_int8_t *val; |
| 874 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 875 | |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 876 | /* check if this channel is actually active */ |
| 877 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 878 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
| 879 | LOGP(DRSL, LOGL_NOTICE, "%s: MEAS RES for inactive channel\n", |
| 880 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 881 | return 0; |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 882 | } |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 883 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 884 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | aa0efa1 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 885 | mr->lchan = msg->lchan; |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 886 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 887 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 888 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 889 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 890 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 891 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 892 | return -EIO; |
| 893 | |
| 894 | /* Mandatory Parts */ |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 895 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 896 | |
| 897 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 898 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 899 | if (len >= 3) { |
| 900 | if (val[0] & 0x40) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 901 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 902 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 903 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 904 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 905 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 906 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 907 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 908 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 909 | |
| 910 | /* Optional Parts */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 911 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 912 | mr->ms_timing_offset = |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 913 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 914 | |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 915 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 916 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 917 | mr->flags |= MEAS_REP_F_MS_L1; |
| 918 | mr->ms_l1.pwr = ms_pwr_dbm(msg->trx->bts->band, val[0] >> 3); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 919 | if (val[0] & 0x04) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 920 | mr->flags |= MEAS_REP_F_FPC; |
| 921 | mr->ms_l1.ta = val[1]; |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 922 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 923 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | 6d0c8b4 | 2009-10-22 15:43:55 +0200 | [diff] [blame] | 924 | msg->l3h = (u_int8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 925 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 926 | if (rc < 0) |
| 927 | return rc; |
| 928 | } |
| 929 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 930 | print_meas_rep(mr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 931 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 932 | dispatch_signal(SS_LCHAN, S_LCHAN_MEAS_REP, mr); |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 933 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 934 | return 0; |
| 935 | } |
| 936 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 937 | /* Chapter 8.4.7 */ |
| 938 | static int rsl_rx_hando_det(struct msgb *msg) |
| 939 | { |
| 940 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 941 | struct tlv_parsed tp; |
| 942 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 943 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 944 | |
| 945 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 946 | |
| 947 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 948 | DEBUGPC(DRSL, "access delay = %u\n", |
| 949 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 950 | else |
| 951 | DEBUGPC(DRSL, "\n"); |
| 952 | |
| 953 | dispatch_signal(SS_LCHAN, S_LCHAN_HANDOVER_DETECT, msg->lchan); |
| 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 958 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 959 | { |
| 960 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 961 | int rc = 0; |
| 962 | char *ts_name; |
| 963 | |
| 964 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 965 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 966 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 967 | switch (rslh->c.msg_type) { |
| 968 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 969 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 970 | rc = rsl_rx_chan_act_ack(msg); |
| 971 | break; |
| 972 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 973 | rc = rsl_rx_chan_act_nack(msg); |
| 974 | break; |
| 975 | case RSL_MT_CONN_FAIL: |
| 976 | rc = rsl_rx_conn_fail(msg); |
| 977 | break; |
| 978 | case RSL_MT_MEAS_RES: |
| 979 | rc = rsl_rx_meas_res(msg); |
| 980 | break; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 981 | case RSL_MT_HANDO_DET: |
| 982 | rc = rsl_rx_hando_det(msg); |
| 983 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 984 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 985 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", ts_name); |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 986 | if (msg->lchan->state != LCHAN_S_REL_REQ) |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 987 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 988 | gsm_lchan_name(msg->lchan), |
| 989 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 990 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 991 | lchan_free(msg->lchan); |
| 992 | break; |
| 993 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 994 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 995 | break; |
| 996 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 997 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 998 | break; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 999 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1000 | DEBUGPC(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1001 | msg->lchan->ts->flags |= TS_F_PDCH_MODE; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1002 | break; |
| 1003 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1004 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1005 | break; |
| 1006 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1007 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1008 | msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1009 | break; |
| 1010 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1011 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1012 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1013 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1014 | case RSL_MT_PREPROC_MEAS_RES: |
| 1015 | case RSL_MT_TALKER_DET: |
| 1016 | case RSL_MT_LISTENER_DET: |
| 1017 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1018 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1019 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1020 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1021 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1022 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1023 | break; |
| 1024 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1025 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1026 | ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1027 | return -EINVAL; |
| 1028 | } |
| 1029 | |
| 1030 | return rc; |
| 1031 | } |
| 1032 | |
| 1033 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1034 | { |
| 1035 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1036 | struct tlv_parsed tp; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1037 | |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1038 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(msg->trx)); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1039 | |
| 1040 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1041 | |
| 1042 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1043 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1044 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1045 | |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1046 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1047 | |
| 1048 | return 0; |
| 1049 | } |
| 1050 | |
| 1051 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1052 | { |
| 1053 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
| 1054 | int rc = 0; |
| 1055 | |
| 1056 | switch (rslh->msg_type) { |
| 1057 | case RSL_MT_ERROR_REPORT: |
| 1058 | rc = rsl_rx_error_rep(msg); |
| 1059 | break; |
| 1060 | case RSL_MT_RF_RES_IND: |
| 1061 | /* interference on idle channels of TRX */ |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1062 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(msg->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1063 | break; |
| 1064 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1065 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1066 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
| 1067 | gsm_trx_name(msg->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1068 | break; |
| 1069 | default: |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1070 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
| 1071 | "type 0x%02x\n", gsm_trx_name(msg->trx), rslh->msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1072 | return -EINVAL; |
| 1073 | } |
| 1074 | return rc; |
| 1075 | } |
| 1076 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1077 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1078 | static void t3101_expired(void *data) |
| 1079 | { |
| 1080 | struct gsm_lchan *lchan = data; |
| 1081 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 1082 | rsl_rf_chan_release(lchan); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1083 | } |
| 1084 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1085 | /* MS has requested a channel on the RACH */ |
| 1086 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1087 | { |
| 1088 | struct gsm_bts *bts = msg->trx->bts; |
| 1089 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1090 | struct gsm48_req_ref *rqd_ref; |
| 1091 | struct gsm48_imm_ass ia; |
| 1092 | enum gsm_chan_t lctype; |
| 1093 | enum gsm_chreq_reason_t chreq_reason; |
| 1094 | struct gsm_lchan *lchan; |
| 1095 | u_int8_t rqd_ta; |
| 1096 | int ret; |
| 1097 | |
| 1098 | u_int16_t arfcn; |
| 1099 | u_int8_t ts_number, subch; |
| 1100 | |
| 1101 | /* parse request reference to be used in immediate assign */ |
| 1102 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1103 | return -EINVAL; |
| 1104 | |
| 1105 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1106 | |
| 1107 | /* parse access delay and use as TA */ |
| 1108 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1109 | return -EINVAL; |
| 1110 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1111 | |
| 1112 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1113 | * request reference RA */ |
Holger Hans Peter Freyther | 96c8982 | 2009-11-16 17:12:38 +0100 | [diff] [blame] | 1114 | lctype = get_ctype_by_chreq(bts, rqd_ref->ra, bts->network->neci); |
| 1115 | chreq_reason = get_reason_by_chreq(bts, rqd_ref->ra, bts->network->neci); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1116 | |
Harald Welte | bdbb744 | 2009-12-22 19:07:32 +0100 | [diff] [blame] | 1117 | counter_inc(bts->network->stats.chreq.total); |
Harald Welte | 3edc5a9 | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1118 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1119 | /* check availability / allocate channel */ |
| 1120 | lchan = lchan_alloc(bts, lctype); |
| 1121 | if (!lchan) { |
Harald Welte (local) | e0bb5fa | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1122 | LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n", |
Harald Welte (local) | 02204d0 | 2009-12-27 18:05:25 +0100 | [diff] [blame] | 1123 | msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); |
Harald Welte | bdbb744 | 2009-12-22 19:07:32 +0100 | [diff] [blame] | 1124 | counter_inc(bts->network->stats.chreq.no_channel); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1125 | /* FIXME: send some kind of reject ?!? */ |
| 1126 | return -ENOMEM; |
| 1127 | } |
| 1128 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1129 | if (lchan->state != LCHAN_S_NONE) |
| 1130 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1131 | "in state %s\n", gsm_lchan_name(lchan), |
| 1132 | gsm_lchans_name(lchan->state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1133 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1134 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1135 | ts_number = lchan->ts->nr; |
| 1136 | arfcn = lchan->ts->trx->arfcn; |
| 1137 | subch = lchan->nr; |
| 1138 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1139 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | cbd4610 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1140 | lchan->ms_power = ms_pwr_ctl_lvl(bts->band, bts->ms_max_power); |
Harald Welte | 9a229e1 | 2009-08-10 00:45:40 +0200 | [diff] [blame] | 1141 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1142 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 77234e1 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1143 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 1144 | rsl_chan_activate_lchan(lchan, 0x00, rqd_ta, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1145 | |
| 1146 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
| 1147 | memset(&ia, 0, sizeof(ia)); |
| 1148 | ia.l2_plen = 0x2d; |
| 1149 | ia.proto_discr = GSM48_PDISC_RR; |
| 1150 | ia.msg_type = GSM48_MT_RR_IMM_ASS; |
| 1151 | ia.page_mode = GSM48_PM_SAME; |
| 1152 | ia.chan_desc.chan_nr = lchan2chan_nr(lchan); |
| 1153 | ia.chan_desc.h0.h = 0; |
| 1154 | ia.chan_desc.h0.arfcn_high = arfcn >> 8; |
| 1155 | ia.chan_desc.h0.arfcn_low = arfcn & 0xff; |
Harald Welte | 63d23c8 | 2009-07-21 20:55:56 +0200 | [diff] [blame] | 1156 | ia.chan_desc.h0.tsc = bts->tsc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1157 | /* use request reference extracted from CHAN_RQD */ |
| 1158 | memcpy(&ia.req_ref, rqd_ref, sizeof(ia.req_ref)); |
| 1159 | ia.timing_advance = rqd_ta; |
| 1160 | ia.mob_alloc_len = 0; |
| 1161 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1162 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1163 | "r=%s ra=0x%02x\n", gsm_lchan_name(lchan), arfcn, subch, |
Harald Welte (local) | 02204d0 | 2009-12-27 18:05:25 +0100 | [diff] [blame] | 1164 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1165 | rqd_ref->ra); |
| 1166 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1167 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1168 | lchan->T3101.cb = t3101_expired; |
| 1169 | lchan->T3101.data = lchan; |
Holger Hans Peter Freyther | 26ba2e7 | 2009-11-21 21:18:38 +0100 | [diff] [blame] | 1170 | bsc_schedule_timer(&lchan->T3101, bts->network->T3101, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1171 | |
| 1172 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
| 1173 | ret = rsl_imm_assign_cmd(bts, sizeof(ia), (u_int8_t *) &ia); |
| 1174 | |
| 1175 | return ret; |
| 1176 | } |
| 1177 | |
| 1178 | /* MS has requested a channel on the RACH */ |
| 1179 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1180 | { |
| 1181 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1182 | u_int16_t pg_buf_space; |
| 1183 | u_int16_t rach_slot_count = -1; |
| 1184 | u_int16_t rach_busy_count = -1; |
| 1185 | u_int16_t rach_access_count = -1; |
| 1186 | |
| 1187 | switch (rslh->data[0]) { |
| 1188 | case RSL_IE_PAGING_LOAD: |
| 1189 | pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
Harald Welte | 008a492 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1190 | if (is_ipaccess_bts(msg->trx->bts) && pg_buf_space == 0xffff) { |
| 1191 | /* paging load below configured threshold, use 50 as default */ |
| 1192 | pg_buf_space = 50; |
| 1193 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1194 | paging_update_buffer_space(msg->trx->bts, pg_buf_space); |
| 1195 | break; |
| 1196 | case RSL_IE_RACH_LOAD: |
| 1197 | if (msg->data_len >= 7) { |
| 1198 | rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1199 | rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1200 | rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1201 | } |
| 1202 | break; |
| 1203 | default: |
| 1204 | break; |
| 1205 | } |
| 1206 | |
| 1207 | return 0; |
| 1208 | } |
| 1209 | |
| 1210 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1211 | { |
| 1212 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1213 | int rc = 0; |
| 1214 | |
| 1215 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
| 1216 | |
| 1217 | switch (rslh->c.msg_type) { |
| 1218 | case RSL_MT_CHAN_RQD: |
| 1219 | /* MS has requested a channel on the RACH */ |
| 1220 | rc = rsl_rx_chan_rqd(msg); |
| 1221 | break; |
| 1222 | case RSL_MT_CCCH_LOAD_IND: |
| 1223 | /* current load on the CCCH */ |
| 1224 | rc = rsl_rx_ccch_load(msg); |
| 1225 | break; |
| 1226 | case RSL_MT_DELETE_IND: |
| 1227 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1228 | case RSL_MT_CBCH_LOAD_IND: |
| 1229 | /* current load on the CBCH */ |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1230 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1231 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1232 | break; |
| 1233 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1234 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1235 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1236 | return -EINVAL; |
| 1237 | } |
| 1238 | |
| 1239 | return rc; |
| 1240 | } |
| 1241 | |
| 1242 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1243 | { |
| 1244 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1245 | u_int8_t *rlm_cause = rllh->data; |
| 1246 | |
Harald Welte (local) | bd76cce | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1247 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s\n", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1248 | gsm_lchan_name(msg->lchan), |
Harald Welte | b30935e | 2010-03-25 12:13:02 +0800 | [diff] [blame] | 1249 | rsl_rlm_cause_name(rlm_cause[1])); |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1250 | |
| 1251 | rll_indication(msg->lchan, rllh->link_id, BSC_RLLR_IND_ERR_IND); |
Harald Welte (local) | bd76cce | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1252 | |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1253 | if (rlm_cause[1] == RLL_CAUSE_T200_EXPIRED) { |
| 1254 | counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rll_err); |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 1255 | return rsl_rf_chan_release(msg->lchan); |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1256 | } |
Harald Welte | 692f585 | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1257 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1258 | return 0; |
| 1259 | } |
| 1260 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1261 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1262 | 0x02, 0x06, |
| 1263 | 0x01, 0x20, |
| 1264 | 0x02, 0x00, |
| 1265 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1266 | |
| 1267 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1268 | { |
| 1269 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1270 | int rc = 0; |
| 1271 | char *ts_name; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1272 | u_int8_t sapi = rllh->link_id & 7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1273 | |
| 1274 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1275 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1276 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1277 | |
| 1278 | switch (rllh->c.msg_type) { |
| 1279 | case RSL_MT_DATA_IND: |
| 1280 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1281 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1282 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1283 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1284 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1285 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1286 | } |
| 1287 | break; |
| 1288 | case RSL_MT_EST_IND: |
| 1289 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1290 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1291 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1292 | bsc_del_timer(&msg->lchan->T3101); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1293 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1294 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1295 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1296 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1297 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1298 | } |
| 1299 | break; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1300 | case RSL_MT_EST_CONF: |
Harald Welte | 6140217 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1301 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1302 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1303 | rll_indication(msg->lchan, rllh->link_id, |
| 1304 | BSC_RLLR_IND_EST_CONF); |
| 1305 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1306 | case RSL_MT_REL_IND: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1307 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1308 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1309 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1310 | rll_indication(msg->lchan, rllh->link_id, |
| 1311 | BSC_RLLR_IND_REL_IND); |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1312 | /* we can now releae the channel on the BTS/Abis side */ |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 1313 | /* FIXME: officially we need to start T3111 and wait for |
| 1314 | * some grace period */ |
| 1315 | rsl_rf_chan_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1316 | break; |
| 1317 | case RSL_MT_REL_CONF: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1318 | /* BTS informs us of having received UA from MS, |
| 1319 | * in response to DISC that we've sent earlier */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1320 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1321 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1322 | /* we can now releae the channel on the BTS/Abis side */ |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 1323 | /* FIXME: officially we need to start T3111 and wait for |
| 1324 | * some grace period */ |
| 1325 | rsl_rf_chan_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1326 | break; |
| 1327 | case RSL_MT_ERROR_IND: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1328 | rc = rsl_rx_rll_err_ind(msg); |
| 1329 | break; |
| 1330 | case RSL_MT_UNIT_DATA_IND: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1331 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1332 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1333 | break; |
| 1334 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1335 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1336 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1337 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1338 | return rc; |
| 1339 | } |
| 1340 | |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1341 | static u_int8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1342 | { |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1343 | switch (lchan->tch_mode) { |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1344 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1345 | switch (lchan->type) { |
| 1346 | case GSM_LCHAN_TCH_F: |
| 1347 | return 0x00; |
| 1348 | case GSM_LCHAN_TCH_H: |
| 1349 | return 0x03; |
| 1350 | default: |
| 1351 | break; |
| 1352 | } |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1353 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1354 | switch (lchan->type) { |
| 1355 | case GSM_LCHAN_TCH_F: |
| 1356 | return 0x01; |
| 1357 | /* there's no half-rate EFR */ |
| 1358 | default: |
| 1359 | break; |
| 1360 | } |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1361 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1362 | switch (lchan->type) { |
| 1363 | case GSM_LCHAN_TCH_F: |
| 1364 | return 0x02; |
| 1365 | case GSM_LCHAN_TCH_H: |
| 1366 | return 0x05; |
| 1367 | default: |
| 1368 | break; |
| 1369 | } |
| 1370 | default: |
| 1371 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1372 | } |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1373 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1374 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1375 | return 0; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1376 | } |
| 1377 | |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1378 | static u_int8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
| 1379 | { |
| 1380 | switch (lchan->tch_mode) { |
| 1381 | case GSM48_CMODE_SPEECH_V1: |
| 1382 | switch (lchan->type) { |
| 1383 | case GSM_LCHAN_TCH_F: |
| 1384 | return RTP_PT_GSM_FULL; |
| 1385 | case GSM_LCHAN_TCH_H: |
| 1386 | return RTP_PT_GSM_HALF; |
| 1387 | default: |
| 1388 | break; |
| 1389 | } |
| 1390 | case GSM48_CMODE_SPEECH_EFR: |
| 1391 | switch (lchan->type) { |
| 1392 | case GSM_LCHAN_TCH_F: |
| 1393 | return RTP_PT_GSM_EFR; |
| 1394 | /* there's no half-rate EFR */ |
| 1395 | default: |
| 1396 | break; |
| 1397 | } |
| 1398 | case GSM48_CMODE_SPEECH_AMR: |
| 1399 | switch (lchan->type) { |
| 1400 | case GSM_LCHAN_TCH_F: |
| 1401 | return RTP_PT_AMR_FULL; |
| 1402 | case GSM_LCHAN_TCH_H: |
| 1403 | return RTP_PT_AMR_HALF; |
| 1404 | default: |
| 1405 | break; |
| 1406 | } |
| 1407 | default: |
| 1408 | break; |
| 1409 | } |
| 1410 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 1411 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 1412 | lchan->tch_mode, lchan->type); |
| 1413 | return 0; |
| 1414 | } |
| 1415 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1416 | /* ip.access specific RSL extensions */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1417 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 1418 | { |
| 1419 | struct in_addr ip; |
| 1420 | u_int16_t port, conn_id; |
| 1421 | |
| 1422 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
| 1423 | ip.s_addr = *((u_int32_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_IP)); |
| 1424 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 1425 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 1426 | } |
| 1427 | |
| 1428 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
| 1429 | port = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_PORT)); |
| 1430 | port = ntohs(port); |
| 1431 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 1432 | lchan->abis_ip.bound_port = port; |
| 1433 | } |
| 1434 | |
| 1435 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
| 1436 | conn_id = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_CONN_ID)); |
| 1437 | conn_id = ntohs(conn_id); |
| 1438 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 1439 | lchan->abis_ip.conn_id = conn_id; |
| 1440 | } |
| 1441 | |
| 1442 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 1443 | lchan->abis_ip.rtp_payload2 = |
| 1444 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 1445 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 1446 | lchan->abis_ip.rtp_payload2); |
| 1447 | } |
| 1448 | |
| 1449 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 1450 | lchan->abis_ip.speech_mode = |
| 1451 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 1452 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 1453 | lchan->abis_ip.speech_mode); |
| 1454 | } |
| 1455 | |
| 1456 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
| 1457 | ip.s_addr = *((u_int32_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_IP)); |
| 1458 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 1459 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 1460 | } |
| 1461 | |
| 1462 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
| 1463 | port = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_PORT)); |
| 1464 | port = ntohs(port); |
| 1465 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 1466 | lchan->abis_ip.connect_port = port; |
| 1467 | } |
| 1468 | } |
| 1469 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1470 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1471 | { |
| 1472 | struct msgb *msg = rsl_msgb_alloc(); |
| 1473 | struct abis_rsl_dchan_hdr *dh; |
| 1474 | |
| 1475 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1476 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1477 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1478 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1479 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1480 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1481 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1482 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1483 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1484 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1485 | |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1486 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 1487 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 1488 | lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1489 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1490 | msg->trx = lchan->ts->trx; |
| 1491 | |
| 1492 | return abis_rsl_sendmsg(msg); |
| 1493 | } |
| 1494 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1495 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, u_int32_t ip, u_int16_t port, |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1496 | u_int8_t rtp_payload2) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1497 | { |
| 1498 | struct msgb *msg = rsl_msgb_alloc(); |
| 1499 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1500 | u_int32_t *att_ip; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1501 | struct in_addr ia; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1502 | |
| 1503 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1504 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1505 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1506 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1507 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1508 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 1509 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 1510 | lchan->abis_ip.connect_port = port; |
| 1511 | lchan->abis_ip.connect_ip = ip; |
| 1512 | |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1513 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1514 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1515 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1516 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1517 | ia.s_addr = htonl(ip); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1518 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 1519 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 1520 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 1521 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1522 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1523 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 1524 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
| 1525 | att_ip = (u_int32_t *) msgb_put(msg, sizeof(ip)); |
| 1526 | *att_ip = ia.s_addr; |
| 1527 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 1528 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1529 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1530 | if (rtp_payload2) |
| 1531 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
| 1532 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1533 | msg->trx = lchan->ts->trx; |
| 1534 | |
| 1535 | return abis_rsl_sendmsg(msg); |
| 1536 | } |
| 1537 | |
Harald Welte | 9947d9f | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 1538 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 1539 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 1540 | { |
| 1541 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 1542 | int rc; |
| 1543 | |
| 1544 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 1545 | ntohs(rs->rtp.sin_local.sin_port), |
| 1546 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 1547 | lchan->abis_ip.rtp_payload2); |
| 1548 | |
| 1549 | return rc; |
| 1550 | } |
| 1551 | |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1552 | int rsl_ipacc_pdch_activate(struct gsm_lchan *lchan, int act) |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1553 | { |
| 1554 | struct msgb *msg = rsl_msgb_alloc(); |
| 1555 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1556 | u_int8_t msg_type; |
| 1557 | |
| 1558 | if (act) |
| 1559 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
| 1560 | else |
| 1561 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1562 | |
| 1563 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1564 | init_dchan_hdr(dh, msg_type); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1565 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
| 1566 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1567 | |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1568 | DEBUGP(DRSL, "%s IPAC_PDCH_%sACT\n", gsm_lchan_name(lchan), |
| 1569 | act ? "" : "DE"); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1570 | |
| 1571 | msg->trx = lchan->ts->trx; |
| 1572 | |
| 1573 | return abis_rsl_sendmsg(msg); |
| 1574 | } |
| 1575 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1576 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1577 | { |
| 1578 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1579 | struct tlv_parsed tv; |
Harald Welte | 8750421 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 1580 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1581 | |
| 1582 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 1583 | * address and port number to which it has bound the given logical |
| 1584 | * channel */ |
| 1585 | |
| 1586 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1587 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 1588 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | b949895 | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 1589 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1590 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1591 | return -EINVAL; |
| 1592 | } |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1593 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1594 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1595 | |
| 1596 | /* in case we don't use direct BTS-to-BTS RTP */ |
| 1597 | if (!ipacc_rtp_direct) { |
| 1598 | int rc; |
| 1599 | /* the BTS has successfully bound a TCH to a local ip/port, |
| 1600 | * which means we can connect our UDP socket to it */ |
| 1601 | if (lchan->abis_ip.rtp_socket) { |
| 1602 | rtp_socket_free(lchan->abis_ip.rtp_socket); |
| 1603 | lchan->abis_ip.rtp_socket = NULL; |
| 1604 | } |
| 1605 | |
| 1606 | lchan->abis_ip.rtp_socket = rtp_socket_create(); |
| 1607 | if (!lchan->abis_ip.rtp_socket) |
| 1608 | goto out_err; |
| 1609 | |
| 1610 | rc = rtp_socket_connect(lchan->abis_ip.rtp_socket, |
| 1611 | lchan->abis_ip.bound_ip, |
| 1612 | lchan->abis_ip.bound_port); |
| 1613 | if (rc < 0) |
| 1614 | goto out_err; |
| 1615 | } |
| 1616 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1617 | dispatch_signal(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1618 | |
| 1619 | return 0; |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1620 | out_err: |
| 1621 | return -EIO; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1622 | } |
| 1623 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1624 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 1625 | { |
| 1626 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1627 | struct tlv_parsed tv; |
| 1628 | struct gsm_lchan *lchan = msg->lchan; |
| 1629 | |
| 1630 | /* the BTS has acknowledged a remote connect request and |
| 1631 | * it now tells us the IP address and port number to which it has |
| 1632 | * connected the given logical channel */ |
| 1633 | |
| 1634 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1635 | ipac_parse_rtp(lchan, &tv); |
| 1636 | dispatch_signal(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
| 1637 | |
| 1638 | return 0; |
| 1639 | } |
| 1640 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1641 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1642 | { |
| 1643 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1644 | struct tlv_parsed tv; |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1645 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1646 | |
| 1647 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1648 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1649 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1650 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1651 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1652 | |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1653 | /* the BTS tells us a RTP stream has been disconnected */ |
| 1654 | if (lchan->abis_ip.rtp_socket) { |
| 1655 | rtp_socket_free(lchan->abis_ip.rtp_socket); |
| 1656 | lchan->abis_ip.rtp_socket = NULL; |
| 1657 | } |
| 1658 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1659 | dispatch_signal(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | ba4e58d | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 1660 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1661 | return 0; |
| 1662 | } |
| 1663 | |
| 1664 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 1665 | { |
| 1666 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1667 | char *ts_name; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1668 | int rc = 0; |
| 1669 | |
| 1670 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1671 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1672 | |
| 1673 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1674 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1675 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1676 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1677 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1678 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1679 | /* somehow the BTS was unable to bind the lchan to its local |
| 1680 | * port?!? */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1681 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1682 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1683 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1684 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1685 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1686 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1687 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1688 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1689 | /* somehow the BTS was unable to connect the lchan to a remote |
| 1690 | * port */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1691 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1692 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1693 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1694 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1695 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1696 | break; |
| 1697 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1698 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1699 | rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1700 | break; |
| 1701 | } |
| 1702 | DEBUGPC(DRSL, "\n"); |
| 1703 | |
| 1704 | return rc; |
| 1705 | } |
| 1706 | |
| 1707 | |
| 1708 | /* Entry-point where L2 RSL from BTS enters */ |
| 1709 | int abis_rsl_rcvmsg(struct msgb *msg) |
| 1710 | { |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1711 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1712 | int rc = 0; |
| 1713 | |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1714 | if (!msg) { |
| 1715 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 1716 | return -1; |
| 1717 | } |
| 1718 | |
| 1719 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 1720 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
| 1721 | return -1; |
| 1722 | } |
| 1723 | |
| 1724 | rslh = msgb_l2(msg); |
| 1725 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1726 | switch (rslh->msg_discr & 0xfe) { |
| 1727 | case ABIS_RSL_MDISC_RLL: |
| 1728 | rc = abis_rsl_rx_rll(msg); |
| 1729 | break; |
| 1730 | case ABIS_RSL_MDISC_DED_CHAN: |
| 1731 | rc = abis_rsl_rx_dchan(msg); |
| 1732 | break; |
| 1733 | case ABIS_RSL_MDISC_COM_CHAN: |
| 1734 | rc = abis_rsl_rx_cchan(msg); |
| 1735 | break; |
| 1736 | case ABIS_RSL_MDISC_TRX: |
| 1737 | rc = abis_rsl_rx_trx(msg); |
| 1738 | break; |
| 1739 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1740 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1741 | rslh->msg_discr); |
| 1742 | break; |
| 1743 | case ABIS_RSL_MDISC_IPACCESS: |
| 1744 | rc = abis_rsl_rx_ipacc(msg); |
| 1745 | break; |
| 1746 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1747 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 1748 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1749 | return -EINVAL; |
| 1750 | } |
| 1751 | msgb_free(msg); |
| 1752 | return rc; |
| 1753 | } |
| 1754 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1755 | /* From Table 10.5.33 of GSM 04.08 */ |
| 1756 | int rsl_number_of_paging_subchannels(struct gsm_bts *bts) |
| 1757 | { |
Harald Welte | a54a2bb | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1758 | if (bts->si_common.chan_desc.ccch_conf == RSL_BCCH_CCCH_CONF_1_C) { |
| 1759 | return MAX(1, (3 - bts->si_common.chan_desc.bs_ag_blks_res)) |
| 1760 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1761 | } else { |
Harald Welte | a54a2bb | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1762 | return (9 - bts->si_common.chan_desc.bs_ag_blks_res) |
| 1763 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1764 | } |
| 1765 | } |