Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1 | /* GSM Radio Signalling Link messages on the A-bis interface |
| 2 | * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ |
| 3 | |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 4 | /* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 5 | * |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 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> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 25 | #include <stdlib.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 26 | #include <errno.h> |
| 27 | #include <sys/types.h> |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 28 | #include <netinet/in.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 29 | #include <arpa/inet.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 30 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 31 | #include <openbsc/gsm_data.h> |
| 32 | #include <openbsc/gsm_04_08.h> |
| 33 | #include <openbsc/abis_rsl.h> |
| 34 | #include <openbsc/chan_alloc.h> |
| 35 | #include <openbsc/debug.h> |
| 36 | #include <openbsc/tlv.h> |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 37 | #include <openbsc/paging.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 38 | #include <openbsc/signal.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 39 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 40 | #define RSL_ALLOC_SIZE 1024 |
| 41 | #define RSL_ALLOC_HEADROOM 128 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 42 | |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 43 | #define MAX(a, b) (a) >= (b) ? (a) : (b) |
| 44 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 45 | static const struct tlv_definition rsl_att_tlvdef = { |
| 46 | .def = { |
| 47 | [RSL_IE_CHAN_NR] = { TLV_TYPE_TV }, |
| 48 | [RSL_IE_LINK_IDENT] = { TLV_TYPE_TV }, |
| 49 | [RSL_IE_ACT_TYPE] = { TLV_TYPE_TV }, |
| 50 | [RSL_IE_BS_POWER] = { TLV_TYPE_TV }, |
| 51 | [RSL_IE_CHAN_IDENT] = { TLV_TYPE_TLV }, |
| 52 | [RSL_IE_CHAN_MODE] = { TLV_TYPE_TLV }, |
| 53 | [RSL_IE_ENCR_INFO] = { TLV_TYPE_TLV }, |
| 54 | [RSL_IE_FRAME_NUMBER] = { TLV_TYPE_FIXED, 2 }, |
| 55 | [RSL_IE_HANDO_REF] = { TLV_TYPE_TV }, |
| 56 | [RSL_IE_L1_INFO] = { TLV_TYPE_FIXED, 2 }, |
| 57 | [RSL_IE_L3_INFO] = { TLV_TYPE_TL16V }, |
| 58 | [RSL_IE_MS_IDENTITY] = { TLV_TYPE_TLV }, |
| 59 | [RSL_IE_MS_POWER] = { TLV_TYPE_TV }, |
| 60 | [RSL_IE_PAGING_GROUP] = { TLV_TYPE_TV }, |
| 61 | [RSL_IE_PAGING_LOAD] = { TLV_TYPE_FIXED, 2 }, |
| 62 | [RSL_IE_PYHS_CONTEXT] = { TLV_TYPE_TLV }, |
| 63 | [RSL_IE_ACCESS_DELAY] = { TLV_TYPE_TV }, |
| 64 | [RSL_IE_RACH_LOAD] = { TLV_TYPE_TLV }, |
| 65 | [RSL_IE_REQ_REFERENCE] = { TLV_TYPE_FIXED, 3 }, |
| 66 | [RSL_IE_RELEASE_MODE] = { TLV_TYPE_TV }, |
| 67 | [RSL_IE_RESOURCE_INFO] = { TLV_TYPE_TLV }, |
| 68 | [RSL_IE_RLM_CAUSE] = { TLV_TYPE_TLV }, |
| 69 | [RSL_IE_STARTNG_TIME] = { TLV_TYPE_FIXED, 2 }, |
| 70 | [RSL_IE_TIMING_ADVANCE] = { TLV_TYPE_TV }, |
| 71 | [RSL_IE_UPLINK_MEAS] = { TLV_TYPE_TLV }, |
| 72 | [RSL_IE_CAUSE] = { TLV_TYPE_TLV }, |
| 73 | [RSL_IE_MEAS_RES_NR] = { TLV_TYPE_TV }, |
| 74 | [RSL_IE_MSG_ID] = { TLV_TYPE_TV }, |
| 75 | [RSL_IE_SYSINFO_TYPE] = { TLV_TYPE_TV }, |
| 76 | [RSL_IE_MS_POWER_PARAM] = { TLV_TYPE_TLV }, |
| 77 | [RSL_IE_BS_POWER_PARAM] = { TLV_TYPE_TLV }, |
| 78 | [RSL_IE_PREPROC_PARAM] = { TLV_TYPE_TLV }, |
| 79 | [RSL_IE_PREPROC_MEAS] = { TLV_TYPE_TLV }, |
| 80 | [RSL_IE_IMM_ASS_INFO] = { TLV_TYPE_TLV }, |
| 81 | [RSL_IE_SMSCB_INFO] = { TLV_TYPE_FIXED, 23 }, |
| 82 | [RSL_IE_MS_TIMING_OFFSET] = { TLV_TYPE_TV }, |
| 83 | [RSL_IE_ERR_MSG] = { TLV_TYPE_TLV }, |
| 84 | [RSL_IE_FULL_BCCH_INFO] = { TLV_TYPE_TLV }, |
| 85 | [RSL_IE_CHAN_NEEDED] = { TLV_TYPE_TV }, |
| 86 | [RSL_IE_CB_CMD_TYPE] = { TLV_TYPE_TV }, |
| 87 | [RSL_IE_SMSCB_MSG] = { TLV_TYPE_TLV }, |
| 88 | [RSL_IE_FULL_IMM_ASS_INFO] = { TLV_TYPE_TLV }, |
| 89 | [RSL_IE_SACCH_INFO] = { TLV_TYPE_TLV }, |
| 90 | [RSL_IE_CBCH_LOAD_INFO] = { TLV_TYPE_TV }, |
| 91 | [RSL_IE_SMSCB_CHAN_INDICATOR] = { TLV_TYPE_TV }, |
| 92 | [RSL_IE_GROUP_CALL_REF] = { TLV_TYPE_TLV }, |
| 93 | [RSL_IE_CHAN_DESC] = { TLV_TYPE_TLV }, |
| 94 | [RSL_IE_NCH_DRX_INFO] = { TLV_TYPE_TLV }, |
| 95 | [RSL_IE_CMD_INDICATOR] = { TLV_TYPE_TLV }, |
| 96 | [RSL_IE_EMLPP_PRIO] = { TLV_TYPE_TV }, |
| 97 | [RSL_IE_UIC] = { TLV_TYPE_TLV }, |
| 98 | [RSL_IE_MAIN_CHAN_REF] = { TLV_TYPE_TV }, |
| 99 | [RSL_IE_MR_CONFIG] = { TLV_TYPE_TLV }, |
| 100 | [RSL_IE_MR_CONTROL] = { TLV_TYPE_TV }, |
| 101 | [RSL_IE_SUP_CODEC_TYPES] = { TLV_TYPE_TLV }, |
| 102 | [RSL_IE_CODEC_CONFIG] = { TLV_TYPE_TLV }, |
| 103 | [RSL_IE_RTD] = { TLV_TYPE_TV }, |
| 104 | [RSL_IE_TFO_STATUS] = { TLV_TYPE_TV }, |
| 105 | [RSL_IE_LLP_APDU] = { TLV_TYPE_TLV }, |
| 106 | [RSL_IE_IPAC_REMOTE_IP] = { TLV_TYPE_FIXED, 4 }, |
| 107 | [RSL_IE_IPAC_REMOTE_PORT] = { TLV_TYPE_FIXED, 2 }, |
| 108 | [RSL_IE_IPAC_LOCAL_IP] = { TLV_TYPE_FIXED, 4 }, |
| 109 | [RSL_IE_IPAC_LOCAL_PORT] = { TLV_TYPE_FIXED, 2 }, |
| 110 | [0xf4] = { TLV_TYPE_TV }, |
| 111 | [0xf8] = { TLV_TYPE_FIXED, 2 }, |
| 112 | [0xfc] = { TLV_TYPE_TV }, |
| 113 | }, |
| 114 | }; |
Harald Welte | a4d49e9 | 2009-05-23 06:39:58 +0000 | [diff] [blame] | 115 | #define rsl_tlv_parse(dec, buf, len) \ |
| 116 | tlv_parse(dec, &rsl_att_tlvdef, buf, len, 0, 0) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 117 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 118 | static u_int8_t mdisc_by_msgtype(u_int8_t msg_type) |
| 119 | { |
| 120 | /* mask off the transparent bit ? */ |
| 121 | msg_type &= 0xfe; |
| 122 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 123 | if ((msg_type & 0xf0) == 0x00) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 124 | return ABIS_RSL_MDISC_RLL; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 125 | if ((msg_type & 0xf0) == 0x10) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 126 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 127 | return ABIS_RSL_MDISC_TRX; |
| 128 | else |
| 129 | return ABIS_RSL_MDISC_COM_CHAN; |
| 130 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 131 | if ((msg_type & 0xe0) == 0x20) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 132 | return ABIS_RSL_MDISC_DED_CHAN; |
| 133 | |
| 134 | return ABIS_RSL_MDISC_LOC; |
| 135 | } |
| 136 | |
| 137 | static inline void init_dchan_hdr(struct abis_rsl_dchan_hdr *dh, |
| 138 | u_int8_t msg_type) |
| 139 | { |
| 140 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 141 | dh->c.msg_type = msg_type; |
| 142 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 143 | } |
| 144 | |
| 145 | static inline void init_llm_hdr(struct abis_rsl_rll_hdr *dh, |
| 146 | u_int8_t msg_type) |
| 147 | { |
| 148 | /* dh->c.msg_discr = mdisc_by_msgtype(msg_type); */ |
| 149 | dh->c.msg_discr = ABIS_RSL_MDISC_RLL; |
| 150 | dh->c.msg_type = msg_type; |
| 151 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 152 | dh->ie_link_id = RSL_IE_LINK_IDENT; |
| 153 | } |
| 154 | |
| 155 | |
| 156 | /* encode channel number as per Section 9.3.1 */ |
| 157 | u_int8_t rsl_enc_chan_nr(u_int8_t type, u_int8_t subch, u_int8_t timeslot) |
| 158 | { |
| 159 | u_int8_t ret; |
| 160 | |
| 161 | ret = (timeslot & 0x07) | type; |
| 162 | |
| 163 | switch (type) { |
| 164 | case RSL_CHAN_Lm_ACCHs: |
| 165 | subch &= 0x01; |
| 166 | break; |
| 167 | case RSL_CHAN_SDCCH4_ACCH: |
| 168 | subch &= 0x07; |
| 169 | break; |
| 170 | case RSL_CHAN_SDCCH8_ACCH: |
| 171 | subch &= 0x07; |
| 172 | break; |
| 173 | default: |
| 174 | /* no subchannels allowed */ |
| 175 | subch = 0x00; |
| 176 | break; |
| 177 | } |
| 178 | ret |= (subch << 3); |
| 179 | |
| 180 | return ret; |
| 181 | } |
| 182 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 183 | /* determine logical channel based on TRX and channel number IE */ |
| 184 | struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, u_int8_t chan_nr) |
| 185 | { |
| 186 | struct gsm_lchan *lchan; |
| 187 | u_int8_t ts_nr = chan_nr & 0x07; |
| 188 | u_int8_t cbits = chan_nr >> 3; |
| 189 | u_int8_t lch_idx; |
| 190 | struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| 191 | |
| 192 | if (cbits == 0x01) { |
| 193 | lch_idx = 0; /* TCH/F */ |
| 194 | if (ts->pchan != GSM_PCHAN_TCH_F) |
| 195 | fprintf(stderr, "chan_nr=0x%02x but pchan=%u\n", |
| 196 | chan_nr, ts->pchan); |
| 197 | } else if ((cbits & 0x1e) == 0x02) { |
| 198 | lch_idx = cbits & 0x1; /* TCH/H */ |
| 199 | if (ts->pchan != GSM_PCHAN_TCH_H) |
| 200 | fprintf(stderr, "chan_nr=0x%02x but pchan=%u\n", |
| 201 | chan_nr, ts->pchan); |
| 202 | } else if ((cbits & 0x1c) == 0x04) { |
| 203 | lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| 204 | if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
| 205 | fprintf(stderr, "chan_nr=0x%02x but pchan=%u\n", |
| 206 | chan_nr, ts->pchan); |
| 207 | } else if ((cbits & 0x18) == 0x08) { |
| 208 | lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| 209 | if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C) |
| 210 | fprintf(stderr, "chan_nr=0x%02x but pchan=%u\n", |
| 211 | chan_nr, ts->pchan); |
| 212 | } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| 213 | lch_idx = 0; |
| 214 | if (ts->pchan != GSM_PCHAN_CCCH && |
| 215 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
| 216 | fprintf(stderr, "chan_nr=0x%02x but pchan=%u\n", |
| 217 | chan_nr, ts->pchan); |
| 218 | /* FIXME: we should not return first sdcch4 !!! */ |
| 219 | } else { |
| 220 | fprintf(stderr, "unknown chan_nr=0x%02x\n", chan_nr); |
| 221 | return NULL; |
| 222 | } |
| 223 | |
| 224 | lchan = &ts->lchan[lch_idx]; |
| 225 | |
| 226 | return lchan; |
| 227 | } |
| 228 | |
| 229 | u_int8_t lchan2chan_nr(struct gsm_lchan *lchan) |
| 230 | { |
| 231 | struct gsm_bts_trx_ts *ts = lchan->ts; |
| 232 | u_int8_t cbits, chan_nr; |
| 233 | |
| 234 | switch (ts->pchan) { |
| 235 | case GSM_PCHAN_TCH_F: |
| 236 | cbits = 0x01; |
| 237 | break; |
| 238 | case GSM_PCHAN_TCH_H: |
| 239 | cbits = 0x02; |
| 240 | cbits += lchan->nr; |
| 241 | break; |
| 242 | case GSM_PCHAN_CCCH_SDCCH4: |
| 243 | cbits = 0x04; |
| 244 | cbits += lchan->nr; |
| 245 | break; |
| 246 | case GSM_PCHAN_SDCCH8_SACCH8C: |
| 247 | cbits = 0x08; |
| 248 | cbits += lchan->nr; |
| 249 | break; |
| 250 | default: |
| 251 | case GSM_PCHAN_CCCH: |
| 252 | cbits = 0x10; |
| 253 | break; |
| 254 | } |
| 255 | |
| 256 | chan_nr = (cbits << 3) | (ts->nr & 0x7); |
| 257 | |
| 258 | return chan_nr; |
| 259 | } |
| 260 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 261 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
| 262 | u_int64_t str_to_imsi(const char *imsi_str) |
| 263 | { |
| 264 | u_int64_t ret; |
| 265 | |
| 266 | ret = strtoull(imsi_str, NULL, 10); |
| 267 | |
| 268 | return ret; |
| 269 | } |
| 270 | |
| 271 | /* Table 5 Clause 7 TS 05.02 */ |
| 272 | unsigned int n_pag_blocks(int bs_ccch_sdcch_comb, unsigned int bs_ag_blks_res) |
| 273 | { |
| 274 | if (!bs_ccch_sdcch_comb) |
| 275 | return 9 - bs_ag_blks_res; |
| 276 | else |
| 277 | return 3 - bs_ag_blks_res; |
| 278 | } |
| 279 | |
| 280 | /* Chapter 6.5.2 of TS 05.02 */ |
| 281 | unsigned int get_ccch_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 282 | unsigned int n_pag_blocks) |
| 283 | { |
| 284 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) / n_pag_blocks; |
| 285 | } |
| 286 | |
| 287 | /* Chapter 6.5.2 of TS 05.02 */ |
| 288 | unsigned int get_paging_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 289 | int n_pag_blocks) |
| 290 | { |
| 291 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) % n_pag_blocks; |
| 292 | } |
| 293 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 294 | static struct msgb *rsl_msgb_alloc(void) |
| 295 | { |
| 296 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM); |
| 297 | } |
| 298 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 299 | #define MACBLOCK_SIZE 23 |
| 300 | static void pad_macblock(u_int8_t *out, const u_int8_t *in, int len) |
| 301 | { |
| 302 | memcpy(out, in, len); |
| 303 | |
| 304 | if (len < MACBLOCK_SIZE) |
| 305 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 306 | } |
| 307 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 308 | static void print_rsl_cause(u_int8_t *cause_tlv) |
| 309 | { |
| 310 | u_int8_t cause_len; |
| 311 | int i; |
| 312 | |
| 313 | if (cause_tlv[0] != RSL_IE_CAUSE) |
| 314 | return; |
| 315 | |
| 316 | cause_len = cause_tlv[1]; |
| 317 | DEBUGPC(DRSL, "CAUSE: "); |
| 318 | for (i = 0; i < cause_len; i++) |
| 319 | DEBUGPC(DRSL, "%02x ", cause_tlv[2+i]); |
| 320 | } |
| 321 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 322 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 323 | int rsl_bcch_info(struct gsm_bts_trx *trx, u_int8_t type, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 324 | const u_int8_t *data, int len) |
| 325 | { |
| 326 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 327 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 328 | |
| 329 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 330 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 331 | dh->chan_nr = RSL_CHAN_BCCH; |
| 332 | |
| 333 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 334 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 335 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 336 | msg->trx = trx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 337 | |
| 338 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 339 | } |
| 340 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 341 | int rsl_sacch_filling(struct gsm_bts_trx *trx, u_int8_t type, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 342 | const u_int8_t *data, int len) |
| 343 | { |
| 344 | struct abis_rsl_common_hdr *ch; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 345 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 346 | |
| 347 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 348 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 349 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 350 | |
| 351 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 352 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 353 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 354 | msg->trx = trx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 355 | |
| 356 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 357 | } |
| 358 | |
Harald Welte | a8f0c57 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 359 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 360 | { |
| 361 | struct abis_rsl_dchan_hdr *dh; |
| 362 | struct msgb *msg = rsl_msgb_alloc(); |
| 363 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 364 | |
| 365 | db = abs(db); |
| 366 | if (db > 30) |
| 367 | return -EINVAL; |
| 368 | |
| 369 | lchan->bs_power = db/2; |
| 370 | if (fpc) |
| 371 | lchan->bs_power |= 0x10; |
| 372 | |
| 373 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 374 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 375 | dh->chan_nr = chan_nr; |
| 376 | |
| 377 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 378 | |
| 379 | msg->trx = lchan->ts->trx; |
| 380 | |
| 381 | return abis_rsl_sendmsg(msg); |
| 382 | } |
| 383 | |
| 384 | /* determine power control level for given dBm value, as indicated |
| 385 | * by the tables in chapter 4.1.1 of GSM TS 05.05 */ |
| 386 | static int ms_pwr_ctl_lvl(struct gsm_bts *bts, unsigned int dbm) |
| 387 | { |
| 388 | switch (bts->band) { |
| 389 | case GSM_BAND_400: |
| 390 | case GSM_BAND_900: |
| 391 | case GSM_BAND_850: |
| 392 | if (dbm >= 39) |
| 393 | return 0; |
| 394 | else if (dbm < 5) |
| 395 | return 19; |
| 396 | else |
| 397 | return 2 + ((39 - dbm) / 2); |
| 398 | break; |
| 399 | case GSM_BAND_1800: |
| 400 | if (dbm >= 36) |
| 401 | return 29; |
| 402 | else if (dbm >= 34) |
| 403 | return 30; |
| 404 | else if (dbm >= 32) |
| 405 | return 31; |
| 406 | else |
| 407 | return (30 - dbm) / 2; |
| 408 | break; |
| 409 | case GSM_BAND_1900: |
| 410 | if (dbm >= 33) |
| 411 | return 30; |
| 412 | else if (dbm >= 32) |
| 413 | return 31; |
| 414 | else |
| 415 | return (30 - dbm) / 2; |
| 416 | break; |
| 417 | } |
| 418 | return -EINVAL; |
| 419 | } |
| 420 | |
Harald Welte | d05559e | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 421 | static int ms_pwr_dbm(enum gsm_band band, u_int8_t lvl) |
| 422 | { |
| 423 | lvl &= 0x1f; |
| 424 | |
| 425 | switch (band) { |
| 426 | case GSM_BAND_400: |
| 427 | case GSM_BAND_900: |
| 428 | case GSM_BAND_850: |
| 429 | if (lvl < 2) |
| 430 | return 39; |
| 431 | else if (lvl < 20) |
| 432 | return 39 - ((lvl - 2) * 2) ; |
| 433 | else |
| 434 | return 5; |
| 435 | break; |
| 436 | case GSM_BAND_1800: |
| 437 | if (lvl < 16) |
| 438 | return 30 - (lvl * 2); |
| 439 | else if (lvl < 29) |
| 440 | return 0; |
| 441 | else |
| 442 | return 36 - ((lvl - 29) * 2); |
| 443 | break; |
| 444 | case GSM_BAND_1900: |
| 445 | if (lvl < 16) |
| 446 | return 30 - (lvl * 2); |
| 447 | else if (lvl < 30) |
| 448 | return -EINVAL; |
| 449 | else |
| 450 | return 33 - (lvl - 30); |
| 451 | break; |
| 452 | } |
| 453 | return -EINVAL; |
| 454 | } |
| 455 | |
Harald Welte | a8f0c57 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 456 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 457 | { |
| 458 | struct abis_rsl_dchan_hdr *dh; |
| 459 | struct msgb *msg = rsl_msgb_alloc(); |
| 460 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 461 | int ctl_lvl; |
| 462 | |
| 463 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts, dbm); |
| 464 | if (ctl_lvl < 0) |
| 465 | return ctl_lvl; |
| 466 | |
| 467 | lchan->ms_power = ctl_lvl; |
| 468 | |
| 469 | if (fpc) |
| 470 | lchan->ms_power |= 0x20; |
| 471 | |
| 472 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 473 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 474 | dh->chan_nr = chan_nr; |
| 475 | |
| 476 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 477 | |
| 478 | msg->trx = lchan->ts->trx; |
| 479 | |
| 480 | return abis_rsl_sendmsg(msg); |
| 481 | } |
| 482 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 483 | /* Chapter 8.4.1 */ |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 484 | #if 0 |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 485 | int rsl_chan_activate(struct gsm_bts_trx *trx, u_int8_t chan_nr, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 486 | u_int8_t act_type, |
| 487 | struct rsl_ie_chan_mode *chan_mode, |
| 488 | struct rsl_ie_chan_ident *chan_ident, |
| 489 | u_int8_t bs_power, u_int8_t ms_power, |
| 490 | u_int8_t ta) |
| 491 | { |
| 492 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 493 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 494 | |
| 495 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 496 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 497 | dh->chan_nr = chan_nr; |
| 498 | |
| 499 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
| 500 | /* For compatibility with Phase 1 */ |
| 501 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(*chan_mode), |
| 502 | (u_int8_t *) chan_mode); |
| 503 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 504 | (u_int8_t *) chan_ident); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 505 | #if 0 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 506 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
| 507 | (u_int8_t *) &encr_info); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 508 | #endif |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 509 | msgb_tv_put(msg, RSL_IE_BS_POWER, bs_power); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 510 | msgb_tv_put(msg, RSL_IE_MS_POWER, ms_power); |
| 511 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 512 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 513 | msg->trx = trx; |
| 514 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 515 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 516 | } |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 517 | #endif |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 518 | |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 519 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, u_int8_t act_type, |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 520 | u_int8_t ta, u_int8_t mode) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 521 | { |
| 522 | struct abis_rsl_dchan_hdr *dh; |
| 523 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 524 | |
| 525 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 526 | u_int16_t arfcn = lchan->ts->trx->arfcn; |
| 527 | struct rsl_ie_chan_mode cm; |
| 528 | struct rsl_ie_chan_ident ci; |
| 529 | |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 530 | memset(&cm, 0, sizeof(cm)); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 531 | /* FIXME: what to do with data calls ? */ |
| 532 | cm.dtx_dtu = 0x00; |
| 533 | switch (lchan->type) { |
| 534 | case GSM_LCHAN_SDCCH: |
| 535 | cm.spd_ind = RSL_CMOD_SPD_SIGN; |
| 536 | cm.chan_rt = RSL_CMOD_CRT_SDCCH; |
| 537 | cm.chan_rate = 0x00; |
| 538 | break; |
| 539 | case GSM_LCHAN_TCH_F: |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 540 | cm.chan_rt = RSL_CMOD_CRT_TCH_Bm; |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 541 | switch (mode) { |
| 542 | case RSL_CMOD_SPD_SIGN: |
| 543 | cm.spd_ind = RSL_CMOD_SPD_SIGN; |
| 544 | cm.chan_rate = 0x00; |
| 545 | break; |
| 546 | case RSL_CMOD_SPD_SPEECH: |
| 547 | cm.spd_ind = RSL_CMOD_SPD_SPEECH; |
| 548 | cm.chan_rate = RSL_CMOD_SP_GSM2; |
| 549 | break; |
| 550 | } |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 551 | break; |
Holger Freyther | ca362a6 | 2009-01-04 21:05:01 +0000 | [diff] [blame] | 552 | case GSM_LCHAN_TCH_H: |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 553 | DEBUGP(DRSL, "Unimplemented TCH_H activation\n"); |
Holger Freyther | ca362a6 | 2009-01-04 21:05:01 +0000 | [diff] [blame] | 554 | return -1; |
| 555 | case GSM_LCHAN_UNKNOWN: |
| 556 | case GSM_LCHAN_NONE: |
| 557 | return -1; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 558 | } |
| 559 | |
Harald Welte | 02b0e09 | 2009-02-28 13:11:07 +0000 | [diff] [blame] | 560 | memset(&ci, 0, sizeof(ci)); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 561 | ci.chan_desc.iei = 0x64; |
| 562 | ci.chan_desc.chan_nr = chan_nr; |
Harald Welte | 02b0e09 | 2009-02-28 13:11:07 +0000 | [diff] [blame] | 563 | ci.chan_desc.oct3 = (lchan->ts->trx->bts->tsc << 5) | ((arfcn & 0x3ff) >> 8); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 564 | ci.chan_desc.oct4 = arfcn & 0xff; |
| 565 | |
| 566 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 567 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 568 | dh->chan_nr = chan_nr; |
| 569 | |
| 570 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
| 571 | /* For compatibility with Phase 1 */ |
| 572 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 573 | (u_int8_t *) &cm); |
| 574 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
| 575 | (u_int8_t *) &ci); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 576 | #if 0 |
| 577 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
| 578 | (u_int8_t *) &encr_info); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 579 | #endif |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 580 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 581 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 582 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 583 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 584 | msg->trx = lchan->ts->trx; |
| 585 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 586 | return abis_rsl_sendmsg(msg); |
| 587 | } |
| 588 | |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 589 | /* Chapter 8.4.9 */ |
| 590 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 591 | { |
| 592 | struct abis_rsl_dchan_hdr *dh; |
| 593 | struct msgb *msg = rsl_msgb_alloc(); |
| 594 | |
| 595 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 596 | struct rsl_ie_chan_mode cm; |
| 597 | |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 598 | memset(&cm, 0, sizeof(cm)); |
| 599 | |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 600 | /* FIXME: what to do with data calls ? */ |
| 601 | cm.dtx_dtu = 0x00; |
| 602 | switch (lchan->type) { |
Harald Welte | 45b407a | 2009-05-23 15:51:12 +0000 | [diff] [blame] | 603 | /* todo more modes */ |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 604 | case GSM_LCHAN_TCH_F: |
| 605 | cm.spd_ind = RSL_CMOD_SPD_SPEECH; |
| 606 | cm.chan_rt = RSL_CMOD_CRT_TCH_Bm; |
Harald Welte | 45b407a | 2009-05-23 15:51:12 +0000 | [diff] [blame] | 607 | switch(lchan->tch_mode) { |
| 608 | case GSM48_CMODE_SPEECH_V1: |
| 609 | cm.chan_rate = RSL_CMOD_SP_GSM1; |
| 610 | break; |
| 611 | case GSM48_CMODE_SPEECH_EFR: |
| 612 | cm.chan_rate = RSL_CMOD_SP_GSM2; |
| 613 | break; |
| 614 | default: |
| 615 | DEBUGP(DRSL, "Unimplemented channel modification\n"); |
| 616 | return -1; |
| 617 | } |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 618 | break; |
| 619 | default: |
| 620 | DEBUGP(DRSL, "Unimplemented channel modification\n"); |
| 621 | return -1; |
| 622 | } |
| 623 | |
| 624 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 625 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 626 | dh->chan_nr = chan_nr; |
| 627 | |
| 628 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 629 | (u_int8_t *) &cm); |
| 630 | #if 0 |
| 631 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
| 632 | (u_int8_t *) &encr_info); |
| 633 | #endif |
| 634 | |
| 635 | msg->trx = lchan->ts->trx; |
| 636 | |
| 637 | return abis_rsl_sendmsg(msg); |
| 638 | } |
| 639 | |
Holger Freyther | 36cbeff | 2008-12-30 19:15:20 +0000 | [diff] [blame] | 640 | /* Chapter 9.1.7 of 04.08 */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 641 | int rsl_chan_release(struct gsm_lchan *lchan) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 642 | { |
| 643 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 644 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 645 | |
| 646 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 647 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 648 | dh->chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 649 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 650 | msg->lchan = lchan; |
| 651 | msg->trx = lchan->ts->trx; |
| 652 | |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 653 | DEBUGP(DRSL, "Channel Release CMD channel=%s chan_nr=0x%02x\n", |
| 654 | gsm_ts_name(lchan->ts), dh->chan_nr); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 655 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 656 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 657 | } |
| 658 | |
| 659 | int rsl_paging_cmd(struct gsm_bts *bts, u_int8_t paging_group, u_int8_t len, |
| 660 | u_int8_t *ms_ident, u_int8_t chan_needed) |
| 661 | { |
| 662 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 663 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 664 | |
| 665 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 666 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 667 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 668 | |
| 669 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
Harald Welte | 255539c | 2008-12-28 02:26:27 +0000 | [diff] [blame] | 670 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 671 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 672 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 673 | msg->trx = bts->c0; |
| 674 | |
| 675 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 676 | } |
| 677 | |
Holger Freyther | 7448a53 | 2009-01-04 20:18:23 +0000 | [diff] [blame] | 678 | int rsl_paging_cmd_subscr(struct gsm_bts *bts, u_int8_t chan_need, |
| 679 | struct gsm_subscriber *subscr) |
| 680 | { |
Holger Freyther | ca362a6 | 2009-01-04 21:05:01 +0000 | [diff] [blame] | 681 | #if 0 |
Holger Freyther | 7448a53 | 2009-01-04 20:18:23 +0000 | [diff] [blame] | 682 | u_int8_t mi[128]; |
| 683 | unsigned int mi_len; |
| 684 | u_int8_t paging_group; |
Holger Freyther | ca362a6 | 2009-01-04 21:05:01 +0000 | [diff] [blame] | 685 | #endif |
Holger Freyther | 7448a53 | 2009-01-04 20:18:23 +0000 | [diff] [blame] | 686 | |
| 687 | return -1; |
| 688 | } |
| 689 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 690 | int imsi_str2bcd(u_int8_t *bcd_out, const char *str_in) |
| 691 | { |
| 692 | int i, len = strlen(str_in); |
| 693 | |
| 694 | for (i = 0; i < len; i++) { |
| 695 | int num = str_in[i] - 0x30; |
| 696 | if (num < 0 || num > 9) |
| 697 | return -1; |
| 698 | if (i % 2 == 0) |
| 699 | bcd_out[i/2] = num; |
| 700 | else |
| 701 | bcd_out[i/2] |= (num << 4); |
| 702 | } |
| 703 | |
| 704 | return 0; |
| 705 | } |
| 706 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 707 | /* Chapter 8.5.6 */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 708 | int rsl_imm_assign_cmd(struct gsm_bts *bts, u_int8_t len, u_int8_t *val) |
| 709 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 710 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 711 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 712 | u_int8_t buf[MACBLOCK_SIZE]; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 713 | |
| 714 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 715 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 716 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 717 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 718 | switch (bts->type) { |
| 719 | case GSM_BTS_TYPE_BS11: |
| 720 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 721 | break; |
| 722 | default: |
| 723 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 724 | pad_macblock(buf, val, len); |
| 725 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 726 | break; |
| 727 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 728 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 729 | msg->trx = bts->c0; |
| 730 | |
| 731 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 732 | } |
| 733 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 734 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 735 | /* Chapter 8.3.1 */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 736 | int rsl_data_request(struct msgb *msg, u_int8_t link_id) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 737 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 738 | u_int8_t l3_len = msg->tail - (u_int8_t *)msgb_l3(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 739 | struct abis_rsl_rll_hdr *rh; |
| 740 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 741 | if (msg->lchan == NULL) { |
| 742 | fprintf(stderr, "cannot send DATA REQUEST to unknown lchan\n"); |
| 743 | return -EINVAL; |
| 744 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 745 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 746 | /* First push the L3 IE tag and length */ |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 747 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 748 | |
| 749 | /* Then push the RSL header */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 750 | rh = (struct abis_rsl_rll_hdr *) msgb_push(msg, sizeof(*rh)); |
| 751 | init_llm_hdr(rh, RSL_MT_DATA_REQ); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 752 | rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 753 | rh->chan_nr = lchan2chan_nr(msg->lchan); |
| 754 | rh->link_id = link_id; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 755 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 756 | msg->trx = msg->lchan->ts->trx; |
| 757 | |
| 758 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 759 | } |
| 760 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 761 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 762 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 763 | { |
| 764 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 765 | |
| 766 | /* BTS has confirmed channel activation, we now need |
| 767 | * to assign the activated channel to the MS */ |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 768 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 769 | return -EINVAL; |
| 770 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 771 | return 0; |
| 772 | } |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 773 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 774 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 775 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 776 | { |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 777 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 778 | struct tlv_parsed tp; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 779 | |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 780 | /* BTS has rejected channel activation ?!? */ |
| 781 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 782 | return -EINVAL; |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 783 | |
| 784 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 785 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
| 786 | DEBUGPC(DRSL, "CAUSE=0x%02x ", *TLVP_VAL(&tp, RSL_IE_CAUSE)); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 787 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 788 | return 0; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 789 | } |
| 790 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 791 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 792 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 793 | { |
| 794 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 795 | struct tlv_parsed tp; |
| 796 | |
| 797 | DEBUGPC(DRSL, "CONNECTION FAIL: "); |
| 798 | print_rsl_cause(dh->data); |
| 799 | |
| 800 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 801 | |
| 802 | if (msg->trx->bts->type == GSM_BTS_TYPE_BS11) { |
| 803 | /* FIXME: we have no idea what cause 0x18 is !!! */ |
| 804 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE) && |
| 805 | TLVP_LEN(&tp, RSL_IE_CAUSE) >= 1 && |
| 806 | *TLVP_VAL(&tp, RSL_IE_CAUSE) == 0x18) { |
Holger Freyther | f7b2a0e | 2009-06-02 02:55:17 +0000 | [diff] [blame] | 807 | if (msg->lchan->use_count > 0) { |
| 808 | DEBUGPC(DRSL, "Cause 0x18 IGNORING, lchan in use! (%d times)\n", msg->lchan->use_count); |
| 809 | return 0; |
| 810 | } |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 811 | } |
| 812 | } |
| 813 | |
Holger Freyther | f7b2a0e | 2009-06-02 02:55:17 +0000 | [diff] [blame] | 814 | DEBUGPC(DRSL, "RELEASING.\n"); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 815 | |
| 816 | /* FIXME: only free it after channel release ACK */ |
| 817 | return rsl_chan_release(msg->lchan); |
| 818 | } |
| 819 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 820 | static int rsl_rx_meas_res(struct msgb *msg) |
| 821 | { |
| 822 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 823 | struct tlv_parsed tp; |
| 824 | |
| 825 | DEBUGPC(DRSL, "MEASUREMENT RESULT "); |
| 826 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 827 | |
| 828 | if (TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR)) |
| 829 | DEBUGPC(DRSL, "NR=%d ", *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR)); |
| 830 | if (TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS)) { |
| 831 | u_int8_t len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
Harald Welte | 75d34a8 | 2009-05-23 06:11:13 +0000 | [diff] [blame] | 832 | const u_int8_t *val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 833 | if (len >= 3) { |
| 834 | if (val[0] & 0x40) |
| 835 | DEBUGPC(DRSL, "DTXd "); |
| 836 | DEBUGPC(DRSL, "RXL-FULL-up=%d RXL-SUB-up=%d ", |
| 837 | val[0] & 0x3f, val[1] & 0x3f); |
| 838 | DEBUGPC(DRSL, "RXQ-FULL-up=%d RXQ-SUB-up=%d ", |
| 839 | val[2]>>3 & 0x7, val[2] & 0x7); |
| 840 | } |
| 841 | } |
| 842 | if (TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 843 | DEBUGPC(DRSL, "BS_POWER=%d ", *TLVP_VAL(&tp, RSL_IE_BS_POWER)); |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 844 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
| 845 | DEBUGPC(DRSL, "MS_TO=%d ", |
| 846 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET)); |
Harald Welte | d05559e | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 847 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
| 848 | u_int8_t *val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
| 849 | u_int8_t pwr_lvl = val[0] >> 3; |
| 850 | DEBUGPC(DRSL, "L1_MS_PWR=%ddBm ", |
| 851 | ms_pwr_dbm(msg->trx->bts->band, pwr_lvl)); |
| 852 | DEBUGPC(DRSL, "L1_FPC=%u ", val[0] & 0x04 ? 1 : 0); |
| 853 | DEBUGPC(DRSL, "L1_TA=%u ", val[1]); |
| 854 | } |
Harald Welte | f7c4352 | 2009-06-09 20:24:21 +0000 | [diff] [blame] | 855 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
| 856 | DEBUGPC(DRSL, "L3\n"); |
| 857 | msg->l3h = TLVP_VAL(&tp, RSL_IE_L3_INFO); |
| 858 | return gsm0408_rcvmsg(msg); |
| 859 | } else |
| 860 | DEBUGPC(DRSL, "\n"); |
Harald Welte | 60d68f1 | 2009-06-05 20:07:43 +0000 | [diff] [blame] | 861 | |
Harald Welte | 75d34a8 | 2009-05-23 06:11:13 +0000 | [diff] [blame] | 862 | return 0; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 863 | } |
| 864 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 865 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 866 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 867 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 868 | int rc = 0; |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 869 | char *ts_name; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 870 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 871 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 872 | ts_name = gsm_ts_name(msg->lchan->ts); |
| 873 | |
| 874 | DEBUGP(DRSL, "channel=%s chan_nr=0x%02x ", ts_name, rslh->chan_nr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 875 | |
| 876 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 877 | case RSL_MT_CHAN_ACTIV_ACK: |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 878 | DEBUGPC(DRSL, "CHANNEL ACTIVATE ACK\n"); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 879 | rc = rsl_rx_chan_act_ack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 880 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 881 | case RSL_MT_CHAN_ACTIV_NACK: |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 882 | DEBUGPC(DRSL, "CHANNEL ACTIVATE NACK\n"); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 883 | rc = rsl_rx_chan_act_nack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 884 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 885 | case RSL_MT_CONN_FAIL: |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 886 | rc = rsl_rx_conn_fail(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 887 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 888 | case RSL_MT_MEAS_RES: |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 889 | rc = rsl_rx_meas_res(msg); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 890 | break; |
| 891 | case RSL_MT_RF_CHAN_REL_ACK: |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 892 | DEBUGPC(DRSL, "RF CHANNEL RELEASE ACK\n"); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 893 | lchan_free(msg->lchan); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 894 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 895 | case RSL_MT_MODE_MODIFY_ACK: |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 896 | DEBUGPC(DRSL, "CHANNEL MODE MODIFY ACK\n"); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 897 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 898 | case RSL_MT_MODE_MODIFY_NACK: |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 899 | DEBUGPC(DRSL, "CHANNEL MODE MODIFY NACK\n"); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 900 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 901 | case RSL_MT_PHY_CONTEXT_CONF: |
| 902 | case RSL_MT_PREPROC_MEAS_RES: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 903 | case RSL_MT_TALKER_DET: |
| 904 | case RSL_MT_LISTENER_DET: |
| 905 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 906 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 907 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 908 | case RSL_MT_MR_CODEC_MOD_PER: |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 909 | DEBUGPC(DRSL, "Unimplemented Abis RSL DChan msg 0x%02x\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 910 | rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 911 | break; |
| 912 | default: |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 913 | DEBUGPC(DRSL, "unknown Abis RSL DChan msg 0x%02x\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 914 | rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 915 | return -EINVAL; |
| 916 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 917 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 918 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 919 | } |
| 920 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 921 | static int rsl_rx_error_rep(struct msgb *msg) |
| 922 | { |
| 923 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 924 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 925 | DEBUGP(DRSL, "ERROR REPORT "); |
| 926 | print_rsl_cause(rslh->data); |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 927 | DEBUGPC(DRSL, "\n"); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 928 | |
| 929 | return 0; |
| 930 | } |
| 931 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 932 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 933 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 934 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 935 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 936 | |
| 937 | switch (rslh->msg_type) { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 938 | case RSL_MT_ERROR_REPORT: |
| 939 | rc = rsl_rx_error_rep(msg); |
| 940 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 941 | case RSL_MT_RF_RES_IND: |
| 942 | /* interference on idle channels of TRX */ |
Harald Welte | 3cf7c3f | 2009-05-01 18:28:00 +0000 | [diff] [blame] | 943 | //DEBUGP(DRSL, "TRX: RF Interference Indication\n"); |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 944 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 945 | case RSL_MT_OVERLOAD: |
| 946 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 947 | DEBUGP(DRSL, "TRX: CCCH/ACCH/CPU Overload\n"); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 948 | break; |
| 949 | default: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 950 | DEBUGP(DRSL, "Unknown Abis RSL TRX message type 0x%02x\n", |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 951 | rslh->msg_type); |
| 952 | return -EINVAL; |
| 953 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 954 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 955 | } |
| 956 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 957 | /* MS has requested a channel on the RACH */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 958 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 959 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 960 | struct gsm_bts *bts = msg->trx->bts; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 961 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 962 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 963 | struct gsm48_imm_ass ia; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 964 | enum gsm_chan_t lctype; |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 965 | enum gsm_chreq_reason_t chreq_reason; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 966 | struct gsm_lchan *lchan; |
| 967 | u_int8_t rqd_ta; |
Holger Freyther | 3186bf2 | 2008-12-29 06:23:49 +0000 | [diff] [blame] | 968 | int ret; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 969 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 970 | u_int16_t arfcn; |
| 971 | u_int8_t ts_number, subch; |
| 972 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 973 | /* parse request reference to be used in immediate assign */ |
| 974 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 975 | return -EINVAL; |
| 976 | |
| 977 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 978 | |
| 979 | /* parse access delay and use as TA */ |
| 980 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 981 | return -EINVAL; |
| 982 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 983 | |
| 984 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 985 | * request reference RA */ |
| 986 | lctype = get_ctype_by_chreq(bts, rqd_ref->ra); |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 987 | chreq_reason = get_reason_by_chreq(bts, rqd_ref->ra); |
| 988 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 989 | /* check availability / allocate channel */ |
| 990 | lchan = lchan_alloc(bts, lctype); |
| 991 | if (!lchan) { |
| 992 | fprintf(stderr, "CHAN RQD: no resources\n"); |
| 993 | /* FIXME: send some kind of reject ?!? */ |
| 994 | return -ENOMEM; |
| 995 | } |
| 996 | |
| 997 | ts_number = lchan->ts->nr; |
| 998 | arfcn = lchan->ts->trx->arfcn; |
| 999 | subch = lchan->nr; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1000 | |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 1001 | lchan->ms_power = lchan->bs_power = 0x0f; /* 30dB reduction */ |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 1002 | rsl_chan_activate_lchan(lchan, 0x00, rqd_ta, RSL_CMOD_SPD_SIGN); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1003 | |
| 1004 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
| 1005 | memset(&ia, 0, sizeof(ia)); |
| 1006 | ia.l2_plen = 0x2d; |
| 1007 | ia.proto_discr = GSM48_PDISC_RR; |
| 1008 | ia.msg_type = GSM48_MT_RR_IMM_ASS; |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1009 | ia.page_mode = GSM48_PM_SAME; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1010 | ia.chan_desc.chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1011 | ia.chan_desc.h0.h = 0; |
| 1012 | ia.chan_desc.h0.arfcn_high = arfcn >> 8; |
| 1013 | ia.chan_desc.h0.arfcn_low = arfcn & 0xff; |
| 1014 | ia.chan_desc.h0.tsc = 7; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1015 | /* use request reference extracted from CHAN_RQD */ |
| 1016 | memcpy(&ia.req_ref, rqd_ref, sizeof(ia.req_ref)); |
| 1017 | ia.timing_advance = rqd_ta; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1018 | ia.mob_alloc_len = 0; |
| 1019 | |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1020 | DEBUGP(DRSL, "Activating ARFCN(%u) TS(%u) SS(%u) lctype %s " |
Holger Freyther | 79f4ae6 | 2009-06-02 03:25:04 +0000 | [diff] [blame] | 1021 | "chan_nr=0x%02x r=%s ra=0x%02x\n", |
Harald Welte | ca64da9 | 2009-01-04 16:54:12 +0000 | [diff] [blame] | 1022 | arfcn, ts_number, subch, gsm_lchan_name(lchan->type), |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1023 | ia.chan_desc.chan_nr, gsm_chreq_name(chreq_reason), |
| 1024 | rqd_ref->ra); |
Harald Welte | 75a983f | 2008-12-27 21:34:06 +0000 | [diff] [blame] | 1025 | |
Harald Welte | 09e38af | 2009-02-16 22:52:23 +0000 | [diff] [blame] | 1026 | /* FIXME: Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
Holger Freyther | 3186bf2 | 2008-12-29 06:23:49 +0000 | [diff] [blame] | 1027 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1028 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
Holger Freyther | 3186bf2 | 2008-12-29 06:23:49 +0000 | [diff] [blame] | 1029 | ret = rsl_imm_assign_cmd(bts, sizeof(ia), (u_int8_t *) &ia); |
| 1030 | |
Harald Welte | 817f3c8 | 2008-12-30 14:57:59 +0000 | [diff] [blame] | 1031 | return ret; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1032 | } |
| 1033 | |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1034 | /* MS has requested a channel on the RACH */ |
| 1035 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1036 | { |
| 1037 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1038 | u_int16_t pg_buf_space; |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1039 | u_int16_t rach_slot_count = -1; |
| 1040 | u_int16_t rach_busy_count = -1; |
| 1041 | u_int16_t rach_access_count = -1; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1042 | |
| 1043 | switch (rslh->data[0]) { |
| 1044 | case RSL_IE_PAGING_LOAD: |
| 1045 | pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 1046 | paging_update_buffer_space(msg->trx->bts, pg_buf_space); |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1047 | break; |
| 1048 | case RSL_IE_RACH_LOAD: |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1049 | if (msg->data_len >= 7) { |
| 1050 | rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1051 | rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1052 | rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1053 | } |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1054 | break; |
| 1055 | default: |
| 1056 | break; |
| 1057 | } |
| 1058 | |
| 1059 | return 0; |
| 1060 | } |
| 1061 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1062 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1063 | { |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1064 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1065 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1066 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1067 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
| 1068 | |
| 1069 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1070 | case RSL_MT_CHAN_RQD: |
| 1071 | /* MS has requested a channel on the RACH */ |
| 1072 | rc = rsl_rx_chan_rqd(msg); |
| 1073 | break; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1074 | case RSL_MT_CCCH_LOAD_IND: |
| 1075 | /* current load on the CCCH */ |
| 1076 | rc = rsl_rx_ccch_load(msg); |
| 1077 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1078 | case RSL_MT_DELETE_IND: |
| 1079 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1080 | case RSL_MT_CBCH_LOAD_IND: |
| 1081 | /* current load on the CBCH */ |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1082 | fprintf(stderr, "Unimplemented Abis RSL TRX message type " |
| 1083 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1084 | break; |
| 1085 | default: |
| 1086 | fprintf(stderr, "Unknown Abis RSL TRX message type 0x%02x\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1087 | rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1088 | return -EINVAL; |
| 1089 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1090 | |
| 1091 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1092 | } |
| 1093 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1094 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1095 | { |
| 1096 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1097 | u_int8_t *rlm_cause = rllh->data; |
| 1098 | |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1099 | DEBUGPC(DRLL, "cause=0x%02x", rlm_cause[1]); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1100 | |
| 1101 | return 0; |
| 1102 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1103 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1104 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
| 1105 | 0x02, 0x06, |
| 1106 | 0x01, 0x20, |
| 1107 | 0x02, 0x00, |
| 1108 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1109 | |
| 1110 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1111 | { |
| 1112 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1113 | int rc = 0; |
| 1114 | char *ts_name; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1115 | |
| 1116 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1117 | ts_name = gsm_ts_name(msg->lchan->ts); |
| 1118 | DEBUGP(DRLL, "channel=%s chan_nr=0x%02x ", ts_name, rllh->chan_nr); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1119 | |
| 1120 | switch (rllh->c.msg_type) { |
| 1121 | case RSL_MT_DATA_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1122 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1123 | if (msgb_l2len(msg) > |
| 1124 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1125 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1126 | msg->l3h = &rllh->data[3]; |
| 1127 | return gsm0408_rcvmsg(msg); |
| 1128 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1129 | break; |
| 1130 | case RSL_MT_EST_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1131 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1132 | if (msgb_l2len(msg) > |
| 1133 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1134 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1135 | msg->l3h = &rllh->data[3]; |
| 1136 | return gsm0408_rcvmsg(msg); |
| 1137 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1138 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1139 | case RSL_MT_REL_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1140 | DEBUGPC(DRLL, "RELEASE INDICATION "); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1141 | break; |
| 1142 | case RSL_MT_REL_CONF: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1143 | DEBUGPC(DRLL, "RELEASE CONFIRMATION "); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1144 | break; |
| 1145 | case RSL_MT_ERROR_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1146 | DEBUGPC(DRLL, "ERROR INDICATION "); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1147 | rc = rsl_rx_rll_err_ind(msg); |
| 1148 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1149 | case RSL_MT_UNIT_DATA_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1150 | DEBUGPC(DRLL, "unimplemented Abis RLL message type 0x%02x ", |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1151 | rllh->c.msg_type); |
| 1152 | break; |
| 1153 | default: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1154 | DEBUGPC(DRLL, "unknown Abis RLL message type 0x%02x ", |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1155 | rllh->c.msg_type); |
| 1156 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1157 | DEBUGPC(DRLL, "\n"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1158 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1159 | } |
| 1160 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1161 | /* ip.access specific RSL extensions */ |
| 1162 | int rsl_ipacc_bind(struct gsm_lchan *lchan) |
| 1163 | { |
| 1164 | struct msgb *msg = rsl_msgb_alloc(); |
| 1165 | struct abis_rsl_dchan_hdr *dh; |
| 1166 | |
| 1167 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 1168 | init_dchan_hdr(dh, RSL_MT_IPAC_BIND); |
| 1169 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1170 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1171 | |
| 1172 | msg->trx = lchan->ts->trx; |
| 1173 | |
| 1174 | return abis_rsl_sendmsg(msg); |
| 1175 | } |
| 1176 | |
| 1177 | int rsl_ipacc_connect(struct gsm_lchan *lchan, u_int32_t ip, u_int16_t port, u_int16_t f8, u_int8_t fc) |
| 1178 | { |
| 1179 | struct msgb *msg = rsl_msgb_alloc(); |
| 1180 | struct abis_rsl_dchan_hdr *dh; |
| 1181 | u_int8_t *att_f8, *att_ip, *att_port; |
| 1182 | |
| 1183 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 1184 | init_dchan_hdr(dh, RSL_MT_IPAC_CONNECT); |
| 1185 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1186 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1187 | |
| 1188 | att_f8 = msgb_put(msg, sizeof(f8)+1); |
| 1189 | att_f8[0] = 0xf8; |
| 1190 | att_f8[1] = f8 >> 8; |
| 1191 | att_f8[2] = f8 & 0xff; |
| 1192 | |
| 1193 | att_ip = msgb_put(msg, sizeof(ip)+1); |
| 1194 | att_ip[0] = RSL_IE_IPAC_REMOTE_IP; |
| 1195 | att_ip[1] = ip >> 24; |
| 1196 | att_ip[2] = ip >> 16; |
| 1197 | att_ip[3] = ip >> 8; |
| 1198 | att_ip[4] = ip & 0xff; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1199 | //att_ip[4] = 11; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1200 | |
| 1201 | att_port = msgb_put(msg, sizeof(port)+1); |
| 1202 | att_port[0] = RSL_IE_IPAC_REMOTE_PORT; |
| 1203 | att_port[1] = port >> 8; |
| 1204 | att_port[2] = port & 0xff; |
| 1205 | |
| 1206 | msgb_tv_put(msg, 0xf4, 1); /* F4 01 */ |
| 1207 | msgb_tv_put(msg, 0xfc, fc); /* FC 7F */ |
| 1208 | msg->trx = lchan->ts->trx; |
| 1209 | |
| 1210 | return abis_rsl_sendmsg(msg); |
| 1211 | } |
| 1212 | |
| 1213 | static int abis_rsl_rx_ipacc_bindack(struct msgb *msg) |
| 1214 | { |
| 1215 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1216 | struct tlv_parsed tv; |
| 1217 | struct gsm_bts_trx_ts *ts = msg->lchan->ts; |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1218 | struct in_addr ip; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1219 | u_int16_t port, attr_f8; |
| 1220 | |
| 1221 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 1222 | * address and port number to which it has bound the given logical |
| 1223 | * channel */ |
| 1224 | |
| 1225 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1226 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 1227 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
| 1228 | !TLVP_PRESENT(&tv, 0xfc) || |
| 1229 | !TLVP_PRESENT(&tv, 0xf8)) { |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1230 | DEBUGPC(DRSL, "mandatory IE missing"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1231 | return -EINVAL; |
| 1232 | } |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1233 | ip.s_addr = *((u_int32_t *) TLVP_VAL(&tv, RSL_IE_IPAC_LOCAL_IP)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1234 | port = *((u_int16_t *) TLVP_VAL(&tv, RSL_IE_IPAC_LOCAL_PORT)); |
| 1235 | attr_f8 = *((u_int16_t *) TLVP_VAL(&tv, 0xf8)); |
| 1236 | |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1237 | DEBUGPC(DRSL, "IP=%s PORT=%d FC=%d F8=%d", |
| 1238 | inet_ntoa(ip), ntohs(port), *TLVP_VAL(&tv, 0xfc), |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1239 | ntohs(attr_f8)); |
| 1240 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1241 | /* update our local information about this TS */ |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1242 | ts->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 1243 | ts->abis_ip.bound_port = ntohs(port); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1244 | ts->abis_ip.attr_f8 = ntohs(attr_f8); |
| 1245 | ts->abis_ip.attr_fc = *TLVP_VAL(&tv, 0xfc); |
| 1246 | |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1247 | dispatch_signal(SS_ABISIP, S_ABISIP_BIND_ACK, msg->lchan); |
| 1248 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1249 | return 0; |
| 1250 | } |
| 1251 | |
| 1252 | static int abis_rsl_rx_ipacc_disc_ind(struct msgb *msg) |
| 1253 | { |
| 1254 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1255 | struct tlv_parsed tv; |
| 1256 | |
| 1257 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1258 | if (!TLVP_PRESENT(&tv, RSL_IE_CAUSE)) { |
Harald Welte | 9d12ea0 | 2009-06-05 20:28:48 +0000 | [diff] [blame] | 1259 | DEBUGPC(DRSL, "mandatory IE missing! "); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1260 | return -EINVAL; |
| 1261 | } |
| 1262 | |
Harald Welte | 9d12ea0 | 2009-06-05 20:28:48 +0000 | [diff] [blame] | 1263 | DEBUGPC(DRSL, "cause=0x%02x ", *TLVP_VAL(&tv, RSL_IE_CAUSE)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1264 | |
| 1265 | return 0; |
| 1266 | } |
| 1267 | |
| 1268 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 1269 | { |
| 1270 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1271 | int rc = 0; |
| 1272 | |
| 1273 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1274 | DEBUGP(DRSL, "channel=%s chan_nr=0x%02x ", |
| 1275 | gsm_ts_name(msg->lchan->ts), rllh->chan_nr); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1276 | |
| 1277 | switch (rllh->c.msg_type) { |
| 1278 | case RSL_MT_IPAC_BIND_ACK: |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1279 | DEBUGPC(DRSL, "IPAC_BIND_ACK "); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1280 | rc = abis_rsl_rx_ipacc_bindack(msg); |
| 1281 | break; |
| 1282 | case RSL_MT_IPAC_BIND_NACK: |
| 1283 | /* somehow the BTS was unable to bind the lchan to its local |
| 1284 | * port?!? */ |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1285 | DEBUGPC(DRSL, "IPAC_BIND_NACK "); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1286 | break; |
| 1287 | case RSL_MT_IPAC_CONNECT_ACK: |
| 1288 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1289 | DEBUGPC(DRSL, "IPAC_CONNECT_ACK "); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1290 | break; |
| 1291 | case RSL_MT_IPAC_CONNECT_NACK: |
| 1292 | /* somehow the BTS was unable to connect the lchan to a remote |
| 1293 | * port */ |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1294 | DEBUGPC(DRSL, "IPAC_CONNECT_NACK "); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1295 | break; |
| 1296 | case RSL_MT_IPAC_DISCONNECT_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1297 | DEBUGPC(DRSL, "IPAC_DISCONNECT_IND "); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1298 | rc = abis_rsl_rx_ipacc_disc_ind(msg); |
| 1299 | break; |
| 1300 | default: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1301 | DEBUGPC(DRSL, "Unknown ip.access msg_type 0x%02x", rllh->c.msg_type); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1302 | break; |
| 1303 | } |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 1304 | DEBUGPC(DRSL, "\n"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1305 | |
| 1306 | return rc; |
| 1307 | } |
| 1308 | |
| 1309 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1310 | /* Entry-point where L2 RSL from BTS enters */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1311 | int abis_rsl_rcvmsg(struct msgb *msg) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1312 | { |
| 1313 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg) ; |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1314 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1315 | |
| 1316 | switch (rslh->msg_discr & 0xfe) { |
| 1317 | case ABIS_RSL_MDISC_RLL: |
| 1318 | rc = abis_rsl_rx_rll(msg); |
| 1319 | break; |
| 1320 | case ABIS_RSL_MDISC_DED_CHAN: |
| 1321 | rc = abis_rsl_rx_dchan(msg); |
| 1322 | break; |
| 1323 | case ABIS_RSL_MDISC_COM_CHAN: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1324 | rc = abis_rsl_rx_cchan(msg); |
| 1325 | break; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1326 | case ABIS_RSL_MDISC_TRX: |
| 1327 | rc = abis_rsl_rx_trx(msg); |
| 1328 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1329 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1330 | fprintf(stderr, "unimplemented RSL msg disc 0x%02x\n", |
| 1331 | rslh->msg_discr); |
| 1332 | break; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1333 | case ABIS_RSL_MDISC_IPACCESS: |
| 1334 | rc = abis_rsl_rx_ipacc(msg); |
| 1335 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1336 | default: |
| 1337 | fprintf(stderr, "unknown RSL message discriminator 0x%02x\n", |
| 1338 | rslh->msg_discr); |
| 1339 | return -EINVAL; |
| 1340 | } |
Harald Welte | 4f4a390 | 2008-12-26 00:04:49 +0000 | [diff] [blame] | 1341 | msgb_free(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1342 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1343 | } |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1344 | |
| 1345 | |
| 1346 | /* Section 3.3.2.3 . I think this looks like a table */ |
| 1347 | int rsl_ccch_conf_to_bs_cc_chans(int ccch_conf) |
| 1348 | { |
| 1349 | switch (ccch_conf) { |
| 1350 | case RSL_BCCH_CCCH_CONF_1_NC: |
| 1351 | return 1; |
| 1352 | case RSL_BCCH_CCCH_CONF_1_C: |
| 1353 | return 1; |
| 1354 | case RSL_BCCH_CCCH_CONF_2_NC: |
| 1355 | return 2; |
| 1356 | case RSL_BCCH_CCCH_CONF_3_NC: |
| 1357 | return 3; |
| 1358 | case RSL_BCCH_CCCH_CONF_4_NC: |
| 1359 | return 4; |
| 1360 | default: |
| 1361 | return -1; |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | int rsl_ccch_conf_to_bs_ccch_sdcch_comb(int ccch_conf) |
| 1366 | { |
| 1367 | switch (ccch_conf) { |
| 1368 | case RSL_BCCH_CCCH_CONF_1_NC: |
| 1369 | return 0; |
| 1370 | case RSL_BCCH_CCCH_CONF_1_C: |
| 1371 | return 1; |
| 1372 | case RSL_BCCH_CCCH_CONF_2_NC: |
| 1373 | return 0; |
| 1374 | case RSL_BCCH_CCCH_CONF_3_NC: |
| 1375 | return 0; |
| 1376 | case RSL_BCCH_CCCH_CONF_4_NC: |
| 1377 | return 0; |
| 1378 | default: |
| 1379 | return -1; |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | /* From Table 10.5.33 of GSM 04.08 */ |
| 1384 | int rsl_number_of_paging_subchannels(struct gsm_bts *bts) |
| 1385 | { |
| 1386 | if (bts->chan_desc.ccch_conf == RSL_BCCH_CCCH_CONF_1_C) { |
| 1387 | return MAX(1, (3 - bts->chan_desc.bs_ag_blks_res)) |
Holger Freyther | 3aa8d6c | 2009-02-04 02:14:45 +0000 | [diff] [blame] | 1388 | * (bts->chan_desc.bs_pa_mfrms + 2); |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1389 | } else { |
| 1390 | return (9 - bts->chan_desc.bs_ag_blks_res) |
Holger Freyther | 3aa8d6c | 2009-02-04 02:14:45 +0000 | [diff] [blame] | 1391 | * (bts->chan_desc.bs_pa_mfrms + 2); |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1392 | } |
| 1393 | } |