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 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 45 | #include <osmocore/talloc.h> |
| 46 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 47 | #define RSL_ALLOC_SIZE 1024 |
| 48 | #define RSL_ALLOC_HEADROOM 128 |
| 49 | |
| 50 | #define MAX(a, b) (a) >= (b) ? (a) : (b) |
| 51 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 52 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
| 53 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 54 | static u_int8_t mdisc_by_msgtype(u_int8_t msg_type) |
| 55 | { |
| 56 | /* mask off the transparent bit ? */ |
| 57 | msg_type &= 0xfe; |
| 58 | |
| 59 | if ((msg_type & 0xf0) == 0x00) |
| 60 | return ABIS_RSL_MDISC_RLL; |
| 61 | if ((msg_type & 0xf0) == 0x10) { |
| 62 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 63 | return ABIS_RSL_MDISC_TRX; |
| 64 | else |
| 65 | return ABIS_RSL_MDISC_COM_CHAN; |
| 66 | } |
| 67 | if ((msg_type & 0xe0) == 0x20) |
| 68 | return ABIS_RSL_MDISC_DED_CHAN; |
| 69 | |
| 70 | return ABIS_RSL_MDISC_LOC; |
| 71 | } |
| 72 | |
| 73 | static inline void init_dchan_hdr(struct abis_rsl_dchan_hdr *dh, |
| 74 | u_int8_t msg_type) |
| 75 | { |
| 76 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 77 | dh->c.msg_type = msg_type; |
| 78 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 79 | } |
| 80 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 81 | /* determine logical channel based on TRX and channel number IE */ |
| 82 | struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, u_int8_t chan_nr) |
| 83 | { |
| 84 | struct gsm_lchan *lchan; |
| 85 | u_int8_t ts_nr = chan_nr & 0x07; |
| 86 | u_int8_t cbits = chan_nr >> 3; |
| 87 | u_int8_t lch_idx; |
| 88 | struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| 89 | |
| 90 | if (cbits == 0x01) { |
| 91 | lch_idx = 0; /* TCH/F */ |
Harald Welte | 37884ed | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 92 | if (ts->pchan != GSM_PCHAN_TCH_F && |
| 93 | ts->pchan != GSM_PCHAN_PDCH && |
| 94 | ts->pchan != GSM_PCHAN_TCH_F_PDCH) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 95 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 96 | chan_nr, ts->pchan); |
| 97 | } else if ((cbits & 0x1e) == 0x02) { |
| 98 | lch_idx = cbits & 0x1; /* TCH/H */ |
| 99 | if (ts->pchan != GSM_PCHAN_TCH_H) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 100 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 101 | chan_nr, ts->pchan); |
| 102 | } else if ((cbits & 0x1c) == 0x04) { |
| 103 | lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| 104 | if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 105 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 106 | chan_nr, ts->pchan); |
| 107 | } else if ((cbits & 0x18) == 0x08) { |
| 108 | lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| 109 | if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 110 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 111 | chan_nr, ts->pchan); |
| 112 | } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| 113 | lch_idx = 0; |
| 114 | if (ts->pchan != GSM_PCHAN_CCCH && |
| 115 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 116 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 117 | chan_nr, ts->pchan); |
| 118 | /* FIXME: we should not return first sdcch4 !!! */ |
| 119 | } else { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 120 | LOGP(DRSL, LOGL_ERROR, "unknown chan_nr=0x%02x\n", chan_nr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 121 | return NULL; |
| 122 | } |
| 123 | |
| 124 | lchan = &ts->lchan[lch_idx]; |
Harald Welte | 51d2a59 | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 125 | log_set_context(BSC_CTX_LCHAN, lchan); |
Holger Hans Peter Freyther | 1a95fa8 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 126 | if (lchan->conn) |
| 127 | log_set_context(BSC_CTX_SUBSCR, lchan->conn->subscr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 128 | |
| 129 | return lchan; |
| 130 | } |
| 131 | |
Holger Hans Peter Freyther | 942ff17 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 132 | /* See Table 10.5.25 of GSM04.08 */ |
Harald Welte | b558624 | 2009-12-09 19:18:32 +0100 | [diff] [blame] | 133 | u_int8_t lchan2chan_nr(const struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 134 | { |
| 135 | struct gsm_bts_trx_ts *ts = lchan->ts; |
| 136 | u_int8_t cbits, chan_nr; |
| 137 | |
| 138 | switch (ts->pchan) { |
| 139 | case GSM_PCHAN_TCH_F: |
Harald Welte | 37884ed | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 140 | case GSM_PCHAN_PDCH: |
| 141 | case GSM_PCHAN_TCH_F_PDCH: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 142 | cbits = 0x01; |
| 143 | break; |
| 144 | case GSM_PCHAN_TCH_H: |
| 145 | cbits = 0x02; |
| 146 | cbits += lchan->nr; |
| 147 | break; |
| 148 | case GSM_PCHAN_CCCH_SDCCH4: |
| 149 | cbits = 0x04; |
| 150 | cbits += lchan->nr; |
| 151 | break; |
| 152 | case GSM_PCHAN_SDCCH8_SACCH8C: |
| 153 | cbits = 0x08; |
| 154 | cbits += lchan->nr; |
| 155 | break; |
| 156 | default: |
| 157 | case GSM_PCHAN_CCCH: |
| 158 | cbits = 0x10; |
| 159 | break; |
| 160 | } |
| 161 | |
| 162 | chan_nr = (cbits << 3) | (ts->nr & 0x7); |
| 163 | |
| 164 | return chan_nr; |
| 165 | } |
| 166 | |
| 167 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
| 168 | u_int64_t str_to_imsi(const char *imsi_str) |
| 169 | { |
| 170 | u_int64_t ret; |
| 171 | |
| 172 | ret = strtoull(imsi_str, NULL, 10); |
| 173 | |
| 174 | return ret; |
| 175 | } |
| 176 | |
| 177 | /* Table 5 Clause 7 TS 05.02 */ |
| 178 | unsigned int n_pag_blocks(int bs_ccch_sdcch_comb, unsigned int bs_ag_blks_res) |
| 179 | { |
| 180 | if (!bs_ccch_sdcch_comb) |
| 181 | return 9 - bs_ag_blks_res; |
| 182 | else |
| 183 | return 3 - bs_ag_blks_res; |
| 184 | } |
| 185 | |
| 186 | /* Chapter 6.5.2 of TS 05.02 */ |
| 187 | unsigned int get_ccch_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 188 | unsigned int n_pag_blocks) |
| 189 | { |
| 190 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) / n_pag_blocks; |
| 191 | } |
| 192 | |
| 193 | /* Chapter 6.5.2 of TS 05.02 */ |
| 194 | unsigned int get_paging_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 195 | int n_pag_blocks) |
| 196 | { |
| 197 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) % n_pag_blocks; |
| 198 | } |
| 199 | |
| 200 | static struct msgb *rsl_msgb_alloc(void) |
| 201 | { |
Harald Welte | 9cfc935 | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 202 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 203 | "RSL"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | #define MACBLOCK_SIZE 23 |
| 207 | static void pad_macblock(u_int8_t *out, const u_int8_t *in, int len) |
| 208 | { |
| 209 | memcpy(out, in, len); |
| 210 | |
| 211 | if (len < MACBLOCK_SIZE) |
| 212 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 213 | } |
| 214 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 215 | /* Chapter 9.3.7: Encryption Information */ |
| 216 | static int build_encr_info(u_int8_t *out, struct gsm_lchan *lchan) |
| 217 | { |
| 218 | *out++ = lchan->encr.alg_id & 0xff; |
| 219 | if (lchan->encr.key_len) |
| 220 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 221 | return lchan->encr.key_len + 1; |
| 222 | } |
| 223 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 224 | 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] | 225 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 226 | int i; |
| 227 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 228 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 229 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 230 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 231 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 232 | } |
| 233 | |
| 234 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
| 235 | int rsl_bcch_info(struct gsm_bts_trx *trx, u_int8_t type, |
| 236 | const u_int8_t *data, int len) |
| 237 | { |
| 238 | struct abis_rsl_dchan_hdr *dh; |
| 239 | struct msgb *msg = rsl_msgb_alloc(); |
| 240 | |
| 241 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 242 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 243 | dh->chan_nr = RSL_CHAN_BCCH; |
| 244 | |
| 245 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 246 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 247 | |
| 248 | msg->trx = trx; |
| 249 | |
| 250 | return abis_rsl_sendmsg(msg); |
| 251 | } |
| 252 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 253 | 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] | 254 | const u_int8_t *data, int len) |
| 255 | { |
| 256 | struct abis_rsl_common_hdr *ch; |
| 257 | struct msgb *msg = rsl_msgb_alloc(); |
| 258 | |
| 259 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 260 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 261 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 262 | |
| 263 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 264 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 265 | |
| 266 | msg->trx = trx; |
| 267 | |
| 268 | return abis_rsl_sendmsg(msg); |
| 269 | } |
| 270 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 271 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 272 | { |
| 273 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 274 | struct msgb *msg; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 275 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 276 | |
| 277 | db = abs(db); |
| 278 | if (db > 30) |
| 279 | return -EINVAL; |
| 280 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 281 | msg = rsl_msgb_alloc(); |
| 282 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 283 | lchan->bs_power = db/2; |
| 284 | if (fpc) |
| 285 | lchan->bs_power |= 0x10; |
| 286 | |
| 287 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 288 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 289 | dh->chan_nr = chan_nr; |
| 290 | |
| 291 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 292 | |
| 293 | msg->trx = lchan->ts->trx; |
| 294 | |
| 295 | return abis_rsl_sendmsg(msg); |
| 296 | } |
| 297 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 298 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 299 | { |
| 300 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 301 | struct msgb *msg; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 302 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 303 | int ctl_lvl; |
| 304 | |
Harald Welte | c4dcda0 | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 305 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 306 | if (ctl_lvl < 0) |
| 307 | return ctl_lvl; |
| 308 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 309 | msg = rsl_msgb_alloc(); |
| 310 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 311 | lchan->ms_power = ctl_lvl; |
| 312 | |
| 313 | if (fpc) |
| 314 | lchan->ms_power |= 0x20; |
| 315 | |
| 316 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 317 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 318 | dh->chan_nr = chan_nr; |
| 319 | |
| 320 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 321 | |
| 322 | msg->trx = lchan->ts->trx; |
| 323 | |
| 324 | return abis_rsl_sendmsg(msg); |
| 325 | } |
| 326 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 327 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 328 | struct gsm_lchan *lchan) |
| 329 | { |
| 330 | memset(cm, 0, sizeof(cm)); |
| 331 | |
| 332 | /* FIXME: what to do with data calls ? */ |
| 333 | cm->dtx_dtu = 0x00; |
| 334 | |
| 335 | /* set TCH Speech/Data */ |
| 336 | cm->spd_ind = lchan->rsl_cmode; |
| 337 | |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 338 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 339 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 340 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 341 | "but tch_mode != signalling\n"); |
| 342 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 343 | switch (lchan->type) { |
| 344 | case GSM_LCHAN_SDCCH: |
| 345 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 346 | break; |
| 347 | case GSM_LCHAN_TCH_F: |
| 348 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 349 | break; |
| 350 | case GSM_LCHAN_TCH_H: |
| 351 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 352 | break; |
| 353 | case GSM_LCHAN_NONE: |
| 354 | case GSM_LCHAN_UNKNOWN: |
| 355 | default: |
| 356 | return -EINVAL; |
| 357 | } |
| 358 | |
| 359 | switch (lchan->tch_mode) { |
| 360 | case GSM48_CMODE_SIGN: |
| 361 | cm->chan_rate = 0; |
| 362 | break; |
| 363 | case GSM48_CMODE_SPEECH_V1: |
| 364 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 365 | break; |
| 366 | case GSM48_CMODE_SPEECH_EFR: |
| 367 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 368 | break; |
| 369 | case GSM48_CMODE_SPEECH_AMR: |
| 370 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 371 | break; |
| 372 | case GSM48_CMODE_DATA_14k5: |
| 373 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 374 | break; |
| 375 | case GSM48_CMODE_DATA_12k0: |
| 376 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 377 | break; |
| 378 | case GSM48_CMODE_DATA_6k0: |
| 379 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 380 | break; |
| 381 | default: |
| 382 | return -EINVAL; |
| 383 | } |
| 384 | |
| 385 | return 0; |
| 386 | } |
| 387 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 388 | /* Chapter 8.4.1 */ |
| 389 | #if 0 |
| 390 | int rsl_chan_activate(struct gsm_bts_trx *trx, u_int8_t chan_nr, |
| 391 | u_int8_t act_type, |
| 392 | struct rsl_ie_chan_mode *chan_mode, |
| 393 | struct rsl_ie_chan_ident *chan_ident, |
| 394 | u_int8_t bs_power, u_int8_t ms_power, |
| 395 | u_int8_t ta) |
| 396 | { |
| 397 | struct abis_rsl_dchan_hdr *dh; |
| 398 | struct msgb *msg = rsl_msgb_alloc(); |
| 399 | |
| 400 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 401 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 402 | dh->chan_nr = chan_nr; |
| 403 | |
| 404 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
| 405 | /* For compatibility with Phase 1 */ |
| 406 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(*chan_mode), |
| 407 | (u_int8_t *) chan_mode); |
| 408 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
| 409 | (u_int8_t *) chan_ident); |
| 410 | #if 0 |
| 411 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
| 412 | (u_int8_t *) &encr_info); |
| 413 | #endif |
| 414 | msgb_tv_put(msg, RSL_IE_BS_POWER, bs_power); |
| 415 | msgb_tv_put(msg, RSL_IE_MS_POWER, ms_power); |
| 416 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 417 | |
| 418 | msg->trx = trx; |
| 419 | |
| 420 | return abis_rsl_sendmsg(msg); |
| 421 | } |
| 422 | #endif |
| 423 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 424 | 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] | 425 | u_int8_t ta, u_int8_t ho_ref) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 426 | { |
| 427 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 428 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 429 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 430 | |
| 431 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 432 | struct rsl_ie_chan_mode cm; |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 433 | struct gsm48_chan_desc cd; |
| 434 | uint8_t *msgb_cd; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 435 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 436 | rc = channel_mode_from_lchan(&cm, lchan); |
| 437 | if (rc < 0) |
| 438 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 439 | |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 440 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 441 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 442 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 443 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 444 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 445 | dh->chan_nr = chan_nr; |
| 446 | |
| 447 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 448 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 449 | (u_int8_t *) &cm); |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 450 | /* For compatibility with Phase 1 */ |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 451 | /* RSL IE TAG */ |
| 452 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
| 453 | /* RSL IE LEN: 04.08_cd_tag + CD + 04.08_ma_tag + 04.08_ma_len + ma_len */ |
| 454 | msgb_v_put(msg, 1 + sizeof(struct gsm48_chan_desc) + 2 + lchan->ts->hopping.ma_len); |
| 455 | /* GSM 04.08 Chan Desc 2 (TAG + fixed 3 byte length V) */ |
| 456 | msgb_v_put(msg, GSM48_IE_CHANDESC_2); |
| 457 | msgb_cd = msgb_put(msg, sizeof(cd)); |
| 458 | memcpy(msgb_cd, &cd, sizeof(cd)); |
| 459 | /* GSM 04.08 Mobile Allocation: TLV */ |
| 460 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 461 | lchan->ts->hopping.ma_data); |
| 462 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 463 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
| 464 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 465 | rc = build_encr_info(encr_info, lchan); |
| 466 | if (rc > 0) |
| 467 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 468 | } |
| 469 | |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 470 | switch (act_type) { |
| 471 | case RSL_ACT_INTER_ASYNC: |
| 472 | case RSL_ACT_INTER_SYNC: |
| 473 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 474 | break; |
| 475 | default: |
| 476 | break; |
| 477 | } |
| 478 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 479 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 480 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 481 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 482 | |
Holger Hans Peter Freyther | 6fe8ab9 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 483 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 484 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
| 485 | (u_int8_t *) &lchan->mr_conf); |
| 486 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 487 | msg->trx = lchan->ts->trx; |
| 488 | |
| 489 | return abis_rsl_sendmsg(msg); |
| 490 | } |
| 491 | |
Harald Welte | 8e77049 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 492 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 493 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 494 | { |
| 495 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 496 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 497 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 498 | |
| 499 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 500 | struct rsl_ie_chan_mode cm; |
| 501 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 502 | rc = channel_mode_from_lchan(&cm, lchan); |
| 503 | if (rc < 0) |
| 504 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 505 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 506 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 507 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 508 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 509 | dh->chan_nr = chan_nr; |
| 510 | |
| 511 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 512 | (u_int8_t *) &cm); |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 513 | |
| 514 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
| 515 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 516 | rc = build_encr_info(encr_info, lchan); |
| 517 | if (rc > 0) |
| 518 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 519 | } |
| 520 | |
Holger Hans Peter Freyther | 3cce58f | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 521 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { |
| 522 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
| 523 | (u_int8_t *) &lchan->mr_conf); |
| 524 | } |
| 525 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 526 | msg->trx = lchan->ts->trx; |
| 527 | |
| 528 | return abis_rsl_sendmsg(msg); |
| 529 | } |
| 530 | |
| 531 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 532 | int rsl_encryption_cmd(struct msgb *msg) |
| 533 | { |
| 534 | struct abis_rsl_dchan_hdr *dh; |
| 535 | struct gsm_lchan *lchan = msg->lchan; |
| 536 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 537 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
Sylvain Munaut | 01f1caf | 2009-09-27 11:13:18 +0200 | [diff] [blame] | 538 | u_int8_t l3_len = msg->len; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 539 | int rc; |
| 540 | |
| 541 | /* First push the L3 IE tag and length */ |
| 542 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 543 | |
| 544 | /* then the link identifier (SAPI0, main sign link) */ |
| 545 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 546 | |
| 547 | /* then encryption information */ |
| 548 | rc = build_encr_info(encr_info, lchan); |
| 549 | if (rc <= 0) |
| 550 | return rc; |
| 551 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 552 | |
| 553 | /* and finally the DCHAN header */ |
| 554 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 555 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 556 | dh->chan_nr = chan_nr; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 557 | |
| 558 | msg->trx = lchan->ts->trx; |
| 559 | |
| 560 | return abis_rsl_sendmsg(msg); |
| 561 | } |
| 562 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 563 | /* 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] | 564 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 565 | { |
| 566 | struct abis_rsl_dchan_hdr *dh; |
| 567 | struct msgb *msg = rsl_msgb_alloc(); |
| 568 | |
| 569 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 570 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
| 571 | dh->chan_nr = lchan2chan_nr(lchan); |
| 572 | |
| 573 | msg->lchan = lchan; |
| 574 | msg->trx = lchan->ts->trx; |
| 575 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 576 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 577 | |
| 578 | return abis_rsl_sendmsg(msg); |
| 579 | } |
| 580 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 581 | static void error_timeout_cb(void *data) |
| 582 | { |
| 583 | struct gsm_lchan *lchan = data; |
| 584 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 585 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 586 | gsm_lchan_name(lchan), lchan->state); |
| 587 | return; |
| 588 | } |
| 589 | |
| 590 | /* go back to the none state */ |
| 591 | LOGP(DRSL, LOGL_NOTICE, "%s is back in operation.\n", gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 456fb9d | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 592 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 593 | } |
| 594 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 595 | /* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */ |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 596 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 597 | { |
| 598 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 599 | struct msgb *msg; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 600 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 601 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 602 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state not sending release.\n", |
| 603 | gsm_lchan_name(lchan)); |
| 604 | return -1; |
| 605 | } |
| 606 | |
| 607 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 608 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 609 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
| 610 | dh->chan_nr = lchan2chan_nr(lchan); |
| 611 | |
| 612 | msg->lchan = lchan; |
| 613 | msg->trx = lchan->ts->trx; |
| 614 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 615 | DEBUGP(DRSL, "%s RF Channel Release CMD due error %d\n", gsm_lchan_name(lchan), error); |
| 616 | |
| 617 | if (error) { |
| 618 | /* |
| 619 | * the nanoBTS sends RLL release indications after the channel release. This can |
| 620 | * be a problem when we have reassigned the channel to someone else and then can |
| 621 | * not figure out who used this channel. |
| 622 | */ |
Holger Hans Peter Freyther | 456fb9d | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 623 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 624 | lchan->error_timer.data = lchan; |
| 625 | lchan->error_timer.cb = error_timeout_cb; |
| 626 | bsc_schedule_timer(&lchan->error_timer, |
| 627 | msg->trx->bts->network->T3111 + 2, 0); |
| 628 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 629 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 630 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 631 | return abis_rsl_sendmsg(msg); |
| 632 | } |
| 633 | |
| 634 | int rsl_paging_cmd(struct gsm_bts *bts, u_int8_t paging_group, u_int8_t len, |
| 635 | u_int8_t *ms_ident, u_int8_t chan_needed) |
| 636 | { |
| 637 | struct abis_rsl_dchan_hdr *dh; |
| 638 | struct msgb *msg = rsl_msgb_alloc(); |
| 639 | |
| 640 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 641 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 642 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 643 | |
| 644 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
| 645 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
| 646 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 647 | |
| 648 | msg->trx = bts->c0; |
| 649 | |
| 650 | return abis_rsl_sendmsg(msg); |
| 651 | } |
| 652 | |
| 653 | int rsl_paging_cmd_subscr(struct gsm_bts *bts, u_int8_t chan_need, |
| 654 | struct gsm_subscriber *subscr) |
| 655 | { |
| 656 | #if 0 |
| 657 | u_int8_t mi[128]; |
| 658 | unsigned int mi_len; |
| 659 | u_int8_t paging_group; |
| 660 | #endif |
| 661 | |
| 662 | return -1; |
| 663 | } |
| 664 | |
| 665 | int imsi_str2bcd(u_int8_t *bcd_out, const char *str_in) |
| 666 | { |
| 667 | int i, len = strlen(str_in); |
| 668 | |
| 669 | for (i = 0; i < len; i++) { |
| 670 | int num = str_in[i] - 0x30; |
| 671 | if (num < 0 || num > 9) |
| 672 | return -1; |
| 673 | if (i % 2 == 0) |
| 674 | bcd_out[i/2] = num; |
| 675 | else |
| 676 | bcd_out[i/2] |= (num << 4); |
| 677 | } |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | /* Chapter 8.5.6 */ |
| 683 | int rsl_imm_assign_cmd(struct gsm_bts *bts, u_int8_t len, u_int8_t *val) |
| 684 | { |
| 685 | struct msgb *msg = rsl_msgb_alloc(); |
| 686 | struct abis_rsl_dchan_hdr *dh; |
| 687 | u_int8_t buf[MACBLOCK_SIZE]; |
| 688 | |
| 689 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 690 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 691 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 692 | |
| 693 | switch (bts->type) { |
| 694 | case GSM_BTS_TYPE_BS11: |
| 695 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 696 | break; |
| 697 | default: |
| 698 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 699 | pad_macblock(buf, val, len); |
| 700 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 701 | break; |
| 702 | } |
| 703 | |
| 704 | msg->trx = bts->c0; |
| 705 | |
| 706 | return abis_rsl_sendmsg(msg); |
| 707 | } |
| 708 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 709 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 1209075 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 710 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 711 | { |
| 712 | struct msgb *msg = rsl_msgb_alloc(); |
| 713 | struct abis_rsl_dchan_hdr *dh; |
| 714 | |
| 715 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 716 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 717 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 718 | dh->chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 1209075 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 719 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(u_int8_t *)mrpci); |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 720 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 721 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 722 | gsm_lchan_name(lchan), *(u_int8_t *)mrpci); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 723 | |
| 724 | msg->trx = lchan->ts->trx; |
| 725 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 726 | return abis_rsl_sendmsg(msg); |
| 727 | } |
| 728 | |
| 729 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 730 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
| 731 | /* Chapter 8.3.1 */ |
| 732 | int rsl_data_request(struct msgb *msg, u_int8_t link_id) |
| 733 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 734 | if (msg->lchan == NULL) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 735 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 736 | return -EINVAL; |
| 737 | } |
| 738 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 739 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, lchan2chan_nr(msg->lchan), |
| 740 | link_id, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 741 | |
| 742 | msg->trx = msg->lchan->ts->trx; |
| 743 | |
| 744 | return abis_rsl_sendmsg(msg); |
| 745 | } |
| 746 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 747 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 748 | /* Chapter 8.3.1 */ |
| 749 | int rsl_establish_request(struct gsm_lchan *lchan, u_int8_t link_id) |
| 750 | { |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 751 | struct msgb *msg; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 752 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 753 | msg = rsl_rll_simple(RSL_MT_EST_REQ, lchan2chan_nr(lchan), |
| 754 | link_id, 0); |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 755 | msg->trx = lchan->ts->trx; |
| 756 | |
| 757 | return abis_rsl_sendmsg(msg); |
| 758 | } |
| 759 | |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 760 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 761 | This is what higher layers should call. The BTS then responds with |
| 762 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 763 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 764 | lchan_free() */ |
Holger Hans Peter Freyther | bcea9a7 | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 765 | int rsl_release_request(struct gsm_lchan *lchan, u_int8_t link_id, u_int8_t reason) |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 766 | { |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 767 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 768 | struct msgb *msg; |
| 769 | |
| 770 | msg = rsl_rll_simple(RSL_MT_REL_REQ, lchan2chan_nr(lchan), |
| 771 | link_id, 0); |
Holger Hans Peter Freyther | bcea9a7 | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 772 | /* 0 is normal release, 1 is local end */ |
| 773 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, reason); |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 774 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 775 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 776 | |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 777 | msg->trx = lchan->ts->trx; |
| 778 | |
| 779 | return abis_rsl_sendmsg(msg); |
| 780 | } |
| 781 | |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 782 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 783 | { |
| 784 | lchan->state = state; |
| 785 | return 0; |
| 786 | } |
| 787 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 788 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 789 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 790 | { |
| 791 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 792 | |
| 793 | /* BTS has confirmed channel activation, we now need |
| 794 | * to assign the activated channel to the MS */ |
| 795 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 796 | return -EINVAL; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 797 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 798 | if (msg->lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 799 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
| 800 | gsm_lchan_name(msg->lchan), |
| 801 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 802 | rsl_lchan_set_state(msg->lchan, LCHAN_S_ACTIVE); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 803 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 804 | if (msg->lchan->rqd_ref) { |
| 805 | rsl_send_imm_assignment(msg->lchan); |
| 806 | talloc_free(msg->lchan->rqd_ref); |
| 807 | msg->lchan->rqd_ref = NULL; |
| 808 | msg->lchan->rqd_ta = 0; |
| 809 | } |
| 810 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 811 | dispatch_signal(SS_LCHAN, S_LCHAN_ACTIVATE_ACK, msg->lchan); |
| 812 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 813 | return 0; |
| 814 | } |
| 815 | |
| 816 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 817 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 818 | { |
| 819 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 820 | struct tlv_parsed tp; |
| 821 | |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 822 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 823 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 824 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 825 | /* BTS has rejected channel activation ?!? */ |
| 826 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
| 827 | return -EINVAL; |
| 828 | |
| 829 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 830 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
| 831 | const u_int8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
| 832 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 833 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 834 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 835 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 836 | } else |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 837 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 838 | |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 839 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 840 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 841 | dispatch_signal(SS_LCHAN, S_LCHAN_ACTIVATE_NACK, msg->lchan); |
| 842 | |
Harald Welte | cddb980 | 2009-08-09 19:50:08 +0200 | [diff] [blame] | 843 | lchan_free(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 844 | return 0; |
| 845 | } |
| 846 | |
| 847 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 848 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 849 | { |
| 850 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 851 | struct tlv_parsed tp; |
| 852 | |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 853 | /* FIXME: print which channel */ |
Harald Welte (local) | 4bd7664 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 854 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING ", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 855 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 856 | |
| 857 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 858 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 859 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 860 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 861 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 862 | |
Harald Welte (local) | 4bd7664 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 863 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 864 | /* FIXME: only free it after channel release ACK */ |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 865 | counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rf_fail); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 866 | return rsl_rf_chan_release(msg->lchan, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 867 | } |
| 868 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 869 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 870 | const char *prefix) |
| 871 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 872 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 873 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 874 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 875 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 876 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 877 | } |
| 878 | |
| 879 | static void print_meas_rep(struct gsm_meas_rep *mr) |
| 880 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 881 | int i; |
| 882 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 883 | DEBUGP(DMEAS, "MEASUREMENT RESULT NR=%d ", mr->nr); |
| 884 | |
| 885 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 886 | DEBUGPC(DMEAS, "DTXd "); |
| 887 | |
| 888 | print_meas_rep_uni(&mr->ul, "ul"); |
| 889 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 890 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 891 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 892 | |
| 893 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 894 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 895 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 896 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 897 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 898 | } |
| 899 | |
| 900 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 901 | DEBUGPC(DMEAS, "DTXu "); |
| 902 | if (mr->flags & MEAS_REP_F_BA1) |
| 903 | DEBUGPC(DMEAS, "BA1 "); |
| 904 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 905 | DEBUGPC(DMEAS, "NOT VALID "); |
| 906 | else |
| 907 | print_meas_rep_uni(&mr->dl, "dl"); |
| 908 | |
| 909 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 0b833f8 | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 910 | if (mr->num_cell == 7) |
| 911 | return; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 912 | for (i = 0; i < mr->num_cell; i++) { |
| 913 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 350c2d3 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 914 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 915 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 916 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 917 | } |
| 918 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 919 | static int rsl_rx_meas_res(struct msgb *msg) |
| 920 | { |
| 921 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 922 | struct tlv_parsed tp; |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 923 | struct gsm_meas_rep *mr = lchan_next_meas_rep(msg->lchan); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 924 | u_int8_t len; |
| 925 | const u_int8_t *val; |
| 926 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 927 | |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 928 | /* check if this channel is actually active */ |
| 929 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 930 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
| 931 | LOGP(DRSL, LOGL_NOTICE, "%s: MEAS RES for inactive channel\n", |
| 932 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 933 | return 0; |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 934 | } |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 935 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 936 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | aa0efa1 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 937 | mr->lchan = msg->lchan; |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 938 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 939 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 940 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 941 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 942 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 943 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 944 | return -EIO; |
| 945 | |
| 946 | /* Mandatory Parts */ |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 947 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 948 | |
| 949 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 950 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 951 | if (len >= 3) { |
| 952 | if (val[0] & 0x40) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 953 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 954 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 955 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 956 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 957 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 958 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 959 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 960 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 961 | |
| 962 | /* Optional Parts */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 963 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 964 | mr->ms_timing_offset = |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 965 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 966 | |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 967 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 968 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 969 | mr->flags |= MEAS_REP_F_MS_L1; |
| 970 | 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] | 971 | if (val[0] & 0x04) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 972 | mr->flags |= MEAS_REP_F_FPC; |
| 973 | mr->ms_l1.ta = val[1]; |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 974 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 975 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | 6d0c8b4 | 2009-10-22 15:43:55 +0200 | [diff] [blame] | 976 | msg->l3h = (u_int8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 977 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 978 | if (rc < 0) |
| 979 | return rc; |
| 980 | } |
| 981 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 982 | print_meas_rep(mr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 983 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 984 | dispatch_signal(SS_LCHAN, S_LCHAN_MEAS_REP, mr); |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 985 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 986 | return 0; |
| 987 | } |
| 988 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 989 | /* Chapter 8.4.7 */ |
| 990 | static int rsl_rx_hando_det(struct msgb *msg) |
| 991 | { |
| 992 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 993 | struct tlv_parsed tp; |
| 994 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 995 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 996 | |
| 997 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 998 | |
| 999 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1000 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1001 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1002 | else |
| 1003 | DEBUGPC(DRSL, "\n"); |
| 1004 | |
| 1005 | dispatch_signal(SS_LCHAN, S_LCHAN_HANDOVER_DETECT, msg->lchan); |
| 1006 | |
| 1007 | return 0; |
| 1008 | } |
| 1009 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1010 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1011 | { |
| 1012 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1013 | int rc = 0; |
| 1014 | char *ts_name; |
| 1015 | |
| 1016 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1017 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1018 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1019 | switch (rslh->c.msg_type) { |
| 1020 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1021 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1022 | rc = rsl_rx_chan_act_ack(msg); |
| 1023 | break; |
| 1024 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1025 | rc = rsl_rx_chan_act_nack(msg); |
| 1026 | break; |
| 1027 | case RSL_MT_CONN_FAIL: |
| 1028 | rc = rsl_rx_conn_fail(msg); |
| 1029 | break; |
| 1030 | case RSL_MT_MEAS_RES: |
| 1031 | rc = rsl_rx_meas_res(msg); |
| 1032 | break; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1033 | case RSL_MT_HANDO_DET: |
| 1034 | rc = rsl_rx_hando_det(msg); |
| 1035 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1036 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1037 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", ts_name); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1038 | if (msg->lchan->state != LCHAN_S_REL_REQ && msg->lchan->state != LCHAN_S_REL_ERR) |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1039 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 1040 | gsm_lchan_name(msg->lchan), |
| 1041 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1042 | bsc_del_timer(&msg->lchan->T3111); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1043 | /* we have an error timer pending to release that */ |
| 1044 | if (msg->lchan->state != LCHAN_S_REL_ERR) |
| 1045 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1046 | lchan_free(msg->lchan); |
| 1047 | break; |
| 1048 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1049 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1050 | break; |
| 1051 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1052 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1053 | break; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1054 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1055 | DEBUGPC(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1056 | msg->lchan->ts->flags |= TS_F_PDCH_MODE; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1057 | break; |
| 1058 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1059 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1060 | break; |
| 1061 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1062 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1063 | msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1064 | break; |
| 1065 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1066 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1067 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1068 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1069 | case RSL_MT_PREPROC_MEAS_RES: |
| 1070 | case RSL_MT_TALKER_DET: |
| 1071 | case RSL_MT_LISTENER_DET: |
| 1072 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1073 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1074 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1075 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1076 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1077 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1078 | break; |
| 1079 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1080 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1081 | ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1082 | return -EINVAL; |
| 1083 | } |
| 1084 | |
| 1085 | return rc; |
| 1086 | } |
| 1087 | |
| 1088 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1089 | { |
| 1090 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1091 | struct tlv_parsed tp; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1092 | |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1093 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(msg->trx)); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1094 | |
| 1095 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1096 | |
| 1097 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1098 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1099 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1100 | |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1101 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1102 | |
| 1103 | return 0; |
| 1104 | } |
| 1105 | |
| 1106 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1107 | { |
| 1108 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
| 1109 | int rc = 0; |
| 1110 | |
| 1111 | switch (rslh->msg_type) { |
| 1112 | case RSL_MT_ERROR_REPORT: |
| 1113 | rc = rsl_rx_error_rep(msg); |
| 1114 | break; |
| 1115 | case RSL_MT_RF_RES_IND: |
| 1116 | /* interference on idle channels of TRX */ |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1117 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(msg->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1118 | break; |
| 1119 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1120 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1121 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
| 1122 | gsm_trx_name(msg->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1123 | break; |
| 1124 | default: |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1125 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
| 1126 | "type 0x%02x\n", gsm_trx_name(msg->trx), rslh->msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1127 | return -EINVAL; |
| 1128 | } |
| 1129 | return rc; |
| 1130 | } |
| 1131 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1132 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1133 | static void t3101_expired(void *data) |
| 1134 | { |
| 1135 | struct gsm_lchan *lchan = data; |
| 1136 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1137 | rsl_rf_chan_release(lchan, 1); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1138 | } |
| 1139 | |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1140 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1141 | static void t3111_expired(void *data) |
| 1142 | { |
| 1143 | struct gsm_lchan *lchan = data; |
| 1144 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1145 | rsl_rf_chan_release(lchan, 0); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1146 | } |
| 1147 | |
laforge | 50312e8 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1148 | #define GSM48_LEN2PLEN(a) (((a) << 2) | 1) |
| 1149 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1150 | /* MS has requested a channel on the RACH */ |
| 1151 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1152 | { |
| 1153 | struct gsm_bts *bts = msg->trx->bts; |
| 1154 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1155 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1156 | enum gsm_chan_t lctype; |
| 1157 | enum gsm_chreq_reason_t chreq_reason; |
| 1158 | struct gsm_lchan *lchan; |
| 1159 | u_int8_t rqd_ta; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1160 | |
| 1161 | u_int16_t arfcn; |
| 1162 | u_int8_t ts_number, subch; |
| 1163 | |
| 1164 | /* parse request reference to be used in immediate assign */ |
| 1165 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1166 | return -EINVAL; |
| 1167 | |
| 1168 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1169 | |
| 1170 | /* parse access delay and use as TA */ |
| 1171 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1172 | return -EINVAL; |
| 1173 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1174 | |
| 1175 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1176 | * request reference RA */ |
Holger Hans Peter Freyther | 96c8982 | 2009-11-16 17:12:38 +0100 | [diff] [blame] | 1177 | lctype = get_ctype_by_chreq(bts, rqd_ref->ra, bts->network->neci); |
| 1178 | 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] | 1179 | |
Harald Welte | bdbb744 | 2009-12-22 19:07:32 +0100 | [diff] [blame] | 1180 | counter_inc(bts->network->stats.chreq.total); |
Harald Welte | 3edc5a9 | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1181 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1182 | /* check availability / allocate channel */ |
| 1183 | lchan = lchan_alloc(bts, lctype); |
| 1184 | if (!lchan) { |
Harald Welte (local) | e0bb5fa | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1185 | 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] | 1186 | 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] | 1187 | counter_inc(bts->network->stats.chreq.no_channel); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1188 | /* FIXME: send some kind of reject ?!? */ |
| 1189 | return -ENOMEM; |
| 1190 | } |
| 1191 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1192 | if (lchan->state != LCHAN_S_NONE) |
| 1193 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1194 | "in state %s\n", gsm_lchan_name(lchan), |
| 1195 | gsm_lchans_name(lchan->state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1196 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1197 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1198 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1199 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1200 | if (!lchan->rqd_ref) { |
| 1201 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1202 | lchan_free(lchan); |
| 1203 | return -ENOMEM; |
| 1204 | } |
| 1205 | |
| 1206 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1207 | lchan->rqd_ta = rqd_ta; |
| 1208 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1209 | ts_number = lchan->ts->nr; |
| 1210 | arfcn = lchan->ts->trx->arfcn; |
| 1211 | subch = lchan->nr; |
| 1212 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1213 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | cbd4610 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1214 | 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] | 1215 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1216 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 77234e1 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1217 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1218 | |
| 1219 | /* FIXME: Start another timer or assume the BTS sends a ACK/NACK? */ |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 1220 | rsl_chan_activate_lchan(lchan, 0x00, rqd_ta, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1221 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1222 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1223 | "r=%s ra=0x%02x\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1224 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1225 | rqd_ref->ra); |
| 1226 | return 0; |
| 1227 | } |
| 1228 | |
| 1229 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1230 | { |
| 1231 | struct gsm_bts *bts = lchan->ts->trx->bts; |
| 1232 | u_int8_t buf[GSM_MACBLOCK_LEN]; |
| 1233 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1234 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1235 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1236 | memset(ia, 0, sizeof(*ia)); |
laforge | 50312e8 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1237 | /* we set ia->l2_plen once we know the length of the MA below */ |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1238 | ia->proto_discr = GSM48_PDISC_RR; |
| 1239 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1240 | ia->page_mode = GSM48_PM_SAME; |
| 1241 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1242 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1243 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1244 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1245 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1246 | if (!lchan->ts->hopping.enabled) { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1247 | ia->mob_alloc_len = 0; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1248 | } else { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1249 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1250 | memcpy(ia->mob_alloc, lchan->ts->hopping.ma_data, ia->mob_alloc_len); |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1251 | } |
Harald Welte | 07f3218 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1252 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1253 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1254 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1255 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1256 | lchan->T3101.cb = t3101_expired; |
| 1257 | lchan->T3101.data = lchan; |
Holger Hans Peter Freyther | 26ba2e7 | 2009-11-21 21:18:38 +0100 | [diff] [blame] | 1258 | bsc_schedule_timer(&lchan->T3101, bts->network->T3101, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1259 | |
| 1260 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1261 | return rsl_imm_assign_cmd(bts, sizeof(*ia)+ia->mob_alloc_len, (u_int8_t *) ia); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | /* MS has requested a channel on the RACH */ |
| 1265 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1266 | { |
| 1267 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1268 | u_int16_t pg_buf_space; |
| 1269 | u_int16_t rach_slot_count = -1; |
| 1270 | u_int16_t rach_busy_count = -1; |
| 1271 | u_int16_t rach_access_count = -1; |
| 1272 | |
| 1273 | switch (rslh->data[0]) { |
| 1274 | case RSL_IE_PAGING_LOAD: |
| 1275 | pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
Harald Welte | 008a492 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1276 | if (is_ipaccess_bts(msg->trx->bts) && pg_buf_space == 0xffff) { |
| 1277 | /* paging load below configured threshold, use 50 as default */ |
| 1278 | pg_buf_space = 50; |
| 1279 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1280 | paging_update_buffer_space(msg->trx->bts, pg_buf_space); |
| 1281 | break; |
| 1282 | case RSL_IE_RACH_LOAD: |
| 1283 | if (msg->data_len >= 7) { |
| 1284 | rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1285 | rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1286 | rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1287 | } |
| 1288 | break; |
| 1289 | default: |
| 1290 | break; |
| 1291 | } |
| 1292 | |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1297 | { |
| 1298 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1299 | int rc = 0; |
| 1300 | |
| 1301 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
| 1302 | |
| 1303 | switch (rslh->c.msg_type) { |
| 1304 | case RSL_MT_CHAN_RQD: |
| 1305 | /* MS has requested a channel on the RACH */ |
| 1306 | rc = rsl_rx_chan_rqd(msg); |
| 1307 | break; |
| 1308 | case RSL_MT_CCCH_LOAD_IND: |
| 1309 | /* current load on the CCCH */ |
| 1310 | rc = rsl_rx_ccch_load(msg); |
| 1311 | break; |
| 1312 | case RSL_MT_DELETE_IND: |
| 1313 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1314 | case RSL_MT_CBCH_LOAD_IND: |
| 1315 | /* current load on the CBCH */ |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1316 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1317 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1318 | break; |
| 1319 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1320 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1321 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1322 | return -EINVAL; |
| 1323 | } |
| 1324 | |
| 1325 | return rc; |
| 1326 | } |
| 1327 | |
| 1328 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1329 | { |
| 1330 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1331 | u_int8_t *rlm_cause = rllh->data; |
| 1332 | |
Harald Welte (local) | bd76cce | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1333 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s\n", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1334 | gsm_lchan_name(msg->lchan), |
Harald Welte | b30935e | 2010-03-25 12:13:02 +0800 | [diff] [blame] | 1335 | rsl_rlm_cause_name(rlm_cause[1])); |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1336 | |
| 1337 | 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] | 1338 | |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1339 | if (rlm_cause[1] == RLL_CAUSE_T200_EXPIRED) { |
| 1340 | counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rll_err); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1341 | return rsl_rf_chan_release(msg->lchan, 1); |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1342 | } |
Harald Welte | 692f585 | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1343 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1344 | return 0; |
| 1345 | } |
| 1346 | |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1347 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1348 | { |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1349 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | d26cbc8 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1350 | if (lchan->state != LCHAN_S_REL_REQ) |
| 1351 | LOGP(DRSL, LOGL_ERROR, "RF release on %s but state %s\n", |
| 1352 | gsm_lchan_name(lchan), |
| 1353 | gsm_lchans_name(lchan->state)); |
| 1354 | |
| 1355 | |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1356 | /* wait a bit to send the RF Channel Release */ |
| 1357 | lchan->T3111.cb = t3111_expired; |
| 1358 | lchan->T3111.data = lchan; |
| 1359 | bts = lchan->ts->trx->bts; |
| 1360 | bsc_schedule_timer(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1361 | } |
| 1362 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1363 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1364 | 0x02, 0x06, |
| 1365 | 0x01, 0x20, |
| 1366 | 0x02, 0x00, |
| 1367 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1368 | |
| 1369 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1370 | { |
| 1371 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1372 | int rc = 0; |
| 1373 | char *ts_name; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1374 | u_int8_t sapi = rllh->link_id & 7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1375 | |
| 1376 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1377 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1378 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1379 | |
| 1380 | switch (rllh->c.msg_type) { |
| 1381 | case RSL_MT_DATA_IND: |
| 1382 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1383 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1384 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1385 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1386 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1387 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1388 | } |
| 1389 | break; |
| 1390 | case RSL_MT_EST_IND: |
| 1391 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1392 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1393 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1394 | bsc_del_timer(&msg->lchan->T3101); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1395 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1396 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1397 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1398 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1399 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1400 | } |
| 1401 | break; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1402 | case RSL_MT_EST_CONF: |
Harald Welte | 6140217 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1403 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1404 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1405 | rll_indication(msg->lchan, rllh->link_id, |
| 1406 | BSC_RLLR_IND_EST_CONF); |
| 1407 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1408 | case RSL_MT_REL_IND: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1409 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1410 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1411 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1412 | rll_indication(msg->lchan, rllh->link_id, |
| 1413 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1414 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1415 | break; |
| 1416 | case RSL_MT_REL_CONF: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1417 | /* BTS informs us of having received UA from MS, |
| 1418 | * in response to DISC that we've sent earlier */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1419 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1420 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1421 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1422 | break; |
| 1423 | case RSL_MT_ERROR_IND: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1424 | rc = rsl_rx_rll_err_ind(msg); |
| 1425 | break; |
| 1426 | case RSL_MT_UNIT_DATA_IND: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1427 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1428 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1429 | break; |
| 1430 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1431 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1432 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1433 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1434 | return rc; |
| 1435 | } |
| 1436 | |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1437 | 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] | 1438 | { |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1439 | switch (lchan->tch_mode) { |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1440 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1441 | switch (lchan->type) { |
| 1442 | case GSM_LCHAN_TCH_F: |
| 1443 | return 0x00; |
| 1444 | case GSM_LCHAN_TCH_H: |
| 1445 | return 0x03; |
| 1446 | default: |
| 1447 | break; |
| 1448 | } |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1449 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1450 | switch (lchan->type) { |
| 1451 | case GSM_LCHAN_TCH_F: |
| 1452 | return 0x01; |
| 1453 | /* there's no half-rate EFR */ |
| 1454 | default: |
| 1455 | break; |
| 1456 | } |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1457 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1458 | switch (lchan->type) { |
| 1459 | case GSM_LCHAN_TCH_F: |
| 1460 | return 0x02; |
| 1461 | case GSM_LCHAN_TCH_H: |
| 1462 | return 0x05; |
| 1463 | default: |
| 1464 | break; |
| 1465 | } |
| 1466 | default: |
| 1467 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1468 | } |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1469 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1470 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1471 | return 0; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1472 | } |
| 1473 | |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1474 | static u_int8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
| 1475 | { |
| 1476 | switch (lchan->tch_mode) { |
| 1477 | case GSM48_CMODE_SPEECH_V1: |
| 1478 | switch (lchan->type) { |
| 1479 | case GSM_LCHAN_TCH_F: |
| 1480 | return RTP_PT_GSM_FULL; |
| 1481 | case GSM_LCHAN_TCH_H: |
| 1482 | return RTP_PT_GSM_HALF; |
| 1483 | default: |
| 1484 | break; |
| 1485 | } |
| 1486 | case GSM48_CMODE_SPEECH_EFR: |
| 1487 | switch (lchan->type) { |
| 1488 | case GSM_LCHAN_TCH_F: |
| 1489 | return RTP_PT_GSM_EFR; |
| 1490 | /* there's no half-rate EFR */ |
| 1491 | default: |
| 1492 | break; |
| 1493 | } |
| 1494 | case GSM48_CMODE_SPEECH_AMR: |
| 1495 | switch (lchan->type) { |
| 1496 | case GSM_LCHAN_TCH_F: |
| 1497 | return RTP_PT_AMR_FULL; |
| 1498 | case GSM_LCHAN_TCH_H: |
| 1499 | return RTP_PT_AMR_HALF; |
| 1500 | default: |
| 1501 | break; |
| 1502 | } |
| 1503 | default: |
| 1504 | break; |
| 1505 | } |
| 1506 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 1507 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 1508 | lchan->tch_mode, lchan->type); |
| 1509 | return 0; |
| 1510 | } |
| 1511 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1512 | /* ip.access specific RSL extensions */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1513 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 1514 | { |
| 1515 | struct in_addr ip; |
| 1516 | u_int16_t port, conn_id; |
| 1517 | |
| 1518 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
| 1519 | ip.s_addr = *((u_int32_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_IP)); |
| 1520 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 1521 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 1522 | } |
| 1523 | |
| 1524 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
| 1525 | port = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_PORT)); |
| 1526 | port = ntohs(port); |
| 1527 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 1528 | lchan->abis_ip.bound_port = port; |
| 1529 | } |
| 1530 | |
| 1531 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
| 1532 | conn_id = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_CONN_ID)); |
| 1533 | conn_id = ntohs(conn_id); |
| 1534 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 1535 | lchan->abis_ip.conn_id = conn_id; |
| 1536 | } |
| 1537 | |
| 1538 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 1539 | lchan->abis_ip.rtp_payload2 = |
| 1540 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 1541 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 1542 | lchan->abis_ip.rtp_payload2); |
| 1543 | } |
| 1544 | |
| 1545 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 1546 | lchan->abis_ip.speech_mode = |
| 1547 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 1548 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 1549 | lchan->abis_ip.speech_mode); |
| 1550 | } |
| 1551 | |
| 1552 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
| 1553 | ip.s_addr = *((u_int32_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_IP)); |
| 1554 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 1555 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 1556 | } |
| 1557 | |
| 1558 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
| 1559 | port = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_PORT)); |
| 1560 | port = ntohs(port); |
| 1561 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 1562 | lchan->abis_ip.connect_port = port; |
| 1563 | } |
| 1564 | } |
| 1565 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1566 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1567 | { |
| 1568 | struct msgb *msg = rsl_msgb_alloc(); |
| 1569 | struct abis_rsl_dchan_hdr *dh; |
| 1570 | |
| 1571 | 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] | 1572 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1573 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1574 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1575 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1576 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1577 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1578 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1579 | 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] | 1580 | 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] | 1581 | |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1582 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 1583 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 1584 | lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1585 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1586 | msg->trx = lchan->ts->trx; |
| 1587 | |
| 1588 | return abis_rsl_sendmsg(msg); |
| 1589 | } |
| 1590 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1591 | 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] | 1592 | u_int8_t rtp_payload2) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1593 | { |
| 1594 | struct msgb *msg = rsl_msgb_alloc(); |
| 1595 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1596 | u_int32_t *att_ip; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1597 | struct in_addr ia; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1598 | |
| 1599 | 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] | 1600 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1601 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1602 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1603 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1604 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 1605 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 1606 | lchan->abis_ip.connect_port = port; |
| 1607 | lchan->abis_ip.connect_ip = ip; |
| 1608 | |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1609 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1610 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1611 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1612 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1613 | ia.s_addr = htonl(ip); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1614 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 1615 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 1616 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 1617 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1618 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1619 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 1620 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
| 1621 | att_ip = (u_int32_t *) msgb_put(msg, sizeof(ip)); |
| 1622 | *att_ip = ia.s_addr; |
| 1623 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 1624 | 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] | 1625 | 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] | 1626 | if (rtp_payload2) |
| 1627 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
| 1628 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1629 | msg->trx = lchan->ts->trx; |
| 1630 | |
| 1631 | return abis_rsl_sendmsg(msg); |
| 1632 | } |
| 1633 | |
Harald Welte | 9947d9f | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 1634 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 1635 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 1636 | { |
| 1637 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 1638 | int rc; |
| 1639 | |
| 1640 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 1641 | ntohs(rs->rtp.sin_local.sin_port), |
| 1642 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 1643 | lchan->abis_ip.rtp_payload2); |
| 1644 | |
| 1645 | return rc; |
| 1646 | } |
| 1647 | |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1648 | int rsl_ipacc_pdch_activate(struct gsm_lchan *lchan, int act) |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1649 | { |
| 1650 | struct msgb *msg = rsl_msgb_alloc(); |
| 1651 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1652 | u_int8_t msg_type; |
| 1653 | |
| 1654 | if (act) |
| 1655 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
| 1656 | else |
| 1657 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1658 | |
| 1659 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1660 | init_dchan_hdr(dh, msg_type); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1661 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
| 1662 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1663 | |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1664 | DEBUGP(DRSL, "%s IPAC_PDCH_%sACT\n", gsm_lchan_name(lchan), |
| 1665 | act ? "" : "DE"); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1666 | |
| 1667 | msg->trx = lchan->ts->trx; |
| 1668 | |
| 1669 | return abis_rsl_sendmsg(msg); |
| 1670 | } |
| 1671 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1672 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1673 | { |
| 1674 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1675 | struct tlv_parsed tv; |
Harald Welte | 8750421 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 1676 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1677 | |
| 1678 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 1679 | * address and port number to which it has bound the given logical |
| 1680 | * channel */ |
| 1681 | |
| 1682 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1683 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 1684 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | b949895 | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 1685 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1686 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1687 | return -EINVAL; |
| 1688 | } |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1689 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1690 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1691 | |
| 1692 | /* in case we don't use direct BTS-to-BTS RTP */ |
| 1693 | if (!ipacc_rtp_direct) { |
| 1694 | int rc; |
| 1695 | /* the BTS has successfully bound a TCH to a local ip/port, |
| 1696 | * which means we can connect our UDP socket to it */ |
| 1697 | if (lchan->abis_ip.rtp_socket) { |
| 1698 | rtp_socket_free(lchan->abis_ip.rtp_socket); |
| 1699 | lchan->abis_ip.rtp_socket = NULL; |
| 1700 | } |
| 1701 | |
| 1702 | lchan->abis_ip.rtp_socket = rtp_socket_create(); |
| 1703 | if (!lchan->abis_ip.rtp_socket) |
| 1704 | goto out_err; |
| 1705 | |
| 1706 | rc = rtp_socket_connect(lchan->abis_ip.rtp_socket, |
| 1707 | lchan->abis_ip.bound_ip, |
| 1708 | lchan->abis_ip.bound_port); |
| 1709 | if (rc < 0) |
| 1710 | goto out_err; |
| 1711 | } |
| 1712 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1713 | dispatch_signal(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1714 | |
| 1715 | return 0; |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1716 | out_err: |
| 1717 | return -EIO; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1718 | } |
| 1719 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1720 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 1721 | { |
| 1722 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1723 | struct tlv_parsed tv; |
| 1724 | struct gsm_lchan *lchan = msg->lchan; |
| 1725 | |
| 1726 | /* the BTS has acknowledged a remote connect request and |
| 1727 | * it now tells us the IP address and port number to which it has |
| 1728 | * connected the given logical channel */ |
| 1729 | |
| 1730 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1731 | ipac_parse_rtp(lchan, &tv); |
| 1732 | dispatch_signal(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
| 1733 | |
| 1734 | return 0; |
| 1735 | } |
| 1736 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1737 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1738 | { |
| 1739 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1740 | struct tlv_parsed tv; |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1741 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1742 | |
| 1743 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1744 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1745 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1746 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1747 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1748 | |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1749 | /* the BTS tells us a RTP stream has been disconnected */ |
| 1750 | if (lchan->abis_ip.rtp_socket) { |
| 1751 | rtp_socket_free(lchan->abis_ip.rtp_socket); |
| 1752 | lchan->abis_ip.rtp_socket = NULL; |
| 1753 | } |
| 1754 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1755 | dispatch_signal(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | ba4e58d | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 1756 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1757 | return 0; |
| 1758 | } |
| 1759 | |
| 1760 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 1761 | { |
| 1762 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1763 | char *ts_name; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1764 | int rc = 0; |
| 1765 | |
| 1766 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1767 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1768 | |
| 1769 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1770 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1771 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1772 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1773 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1774 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1775 | /* somehow the BTS was unable to bind the lchan to its local |
| 1776 | * port?!? */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1777 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1778 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1779 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1780 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1781 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1782 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1783 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1784 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1785 | /* somehow the BTS was unable to connect the lchan to a remote |
| 1786 | * port */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1787 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1788 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1789 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1790 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1791 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1792 | break; |
| 1793 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1794 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1795 | rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1796 | break; |
| 1797 | } |
| 1798 | DEBUGPC(DRSL, "\n"); |
| 1799 | |
| 1800 | return rc; |
| 1801 | } |
| 1802 | |
| 1803 | |
| 1804 | /* Entry-point where L2 RSL from BTS enters */ |
| 1805 | int abis_rsl_rcvmsg(struct msgb *msg) |
| 1806 | { |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1807 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1808 | int rc = 0; |
| 1809 | |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1810 | if (!msg) { |
| 1811 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 1812 | return -1; |
| 1813 | } |
| 1814 | |
| 1815 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 1816 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
| 1817 | return -1; |
| 1818 | } |
| 1819 | |
| 1820 | rslh = msgb_l2(msg); |
| 1821 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1822 | switch (rslh->msg_discr & 0xfe) { |
| 1823 | case ABIS_RSL_MDISC_RLL: |
| 1824 | rc = abis_rsl_rx_rll(msg); |
| 1825 | break; |
| 1826 | case ABIS_RSL_MDISC_DED_CHAN: |
| 1827 | rc = abis_rsl_rx_dchan(msg); |
| 1828 | break; |
| 1829 | case ABIS_RSL_MDISC_COM_CHAN: |
| 1830 | rc = abis_rsl_rx_cchan(msg); |
| 1831 | break; |
| 1832 | case ABIS_RSL_MDISC_TRX: |
| 1833 | rc = abis_rsl_rx_trx(msg); |
| 1834 | break; |
| 1835 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1836 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1837 | rslh->msg_discr); |
| 1838 | break; |
| 1839 | case ABIS_RSL_MDISC_IPACCESS: |
| 1840 | rc = abis_rsl_rx_ipacc(msg); |
| 1841 | break; |
| 1842 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1843 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 1844 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1845 | return -EINVAL; |
| 1846 | } |
| 1847 | msgb_free(msg); |
| 1848 | return rc; |
| 1849 | } |
| 1850 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1851 | /* From Table 10.5.33 of GSM 04.08 */ |
| 1852 | int rsl_number_of_paging_subchannels(struct gsm_bts *bts) |
| 1853 | { |
Harald Welte | a54a2bb | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1854 | if (bts->si_common.chan_desc.ccch_conf == RSL_BCCH_CCCH_CONF_1_C) { |
| 1855 | return MAX(1, (3 - bts->si_common.chan_desc.bs_ag_blks_res)) |
| 1856 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1857 | } else { |
Harald Welte | a54a2bb | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1858 | return (9 - bts->si_common.chan_desc.bs_ag_blks_res) |
| 1859 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1860 | } |
| 1861 | } |