Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 1 | /* Copied from gprs_bssgp_pcu.cpp |
| 2 | * |
| 3 | * Copyright (C) 2012 Ivan Klyuchnikov |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 4 | * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 5 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version 2 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 20 | */ |
| 21 | |
Holger Hans Peter Freyther | 67ed34e | 2013-10-17 17:01:54 +0200 | [diff] [blame] | 22 | #include <bts.h> |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 23 | #include <tbf.h> |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 24 | #include <rlc.h> |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 25 | #include <encoding.h> |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 26 | #include <gprs_rlcmac.h> |
| 27 | #include <gprs_debug.h> |
Holger Hans Peter Freyther | 3dc56a3 | 2013-10-26 21:38:30 +0200 | [diff] [blame] | 28 | #include <gprs_bssgp_pcu.h> |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 29 | #include <gprs_ms.h> |
Holger Hans Peter Freyther | 77e0597 | 2013-11-06 19:16:43 +0100 | [diff] [blame] | 30 | #include <decoding.h> |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 31 | |
| 32 | extern "C" { |
| 33 | #include <osmocom/core/msgb.h> |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 34 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 35 | } |
| 36 | |
| 37 | #include <errno.h> |
| 38 | #include <string.h> |
| 39 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 40 | extern void *tall_pcu_ctx; |
| 41 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 42 | static void tbf_timer_cb(void *_tbf); |
| 43 | |
Daniel Willmann | ca102af | 2014-08-08 12:14:12 +0200 | [diff] [blame] | 44 | gprs_rlcmac_bts *gprs_rlcmac_tbf::bts_data() const |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 45 | { |
| 46 | return bts->bts_data(); |
| 47 | } |
| 48 | |
Jacob Erlbeck | 8759735 | 2015-05-18 11:56:50 +0200 | [diff] [blame] | 49 | uint32_t gprs_rlcmac_tbf::tlli() const |
| 50 | { |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 51 | return m_ms ? m_ms->tlli() : 0; |
Jacob Erlbeck | 8759735 | 2015-05-18 11:56:50 +0200 | [diff] [blame] | 52 | } |
| 53 | |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 54 | const char *gprs_rlcmac_tbf::imsi() const |
Holger Hans Peter Freyther | d868928 | 2013-08-24 20:51:06 +0200 | [diff] [blame] | 55 | { |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 56 | static const char nullc = 0; |
| 57 | return m_ms ? m_ms->imsi() : &nullc; |
| 58 | } |
| 59 | |
| 60 | void gprs_rlcmac_tbf::assign_imsi(const char *imsi_) |
| 61 | { |
| 62 | GprsMs *old_ms; |
| 63 | |
| 64 | if (!imsi_ || !m_ms) { |
| 65 | LOGP(DRLCMAC, LOGL_ERROR, |
| 66 | "%s failed to assign IMSI: missing IMSI or MS object\n", |
| 67 | name()); |
| 68 | return; |
| 69 | } |
| 70 | |
| 71 | if (strcmp(imsi_, imsi()) == 0) |
| 72 | return; |
| 73 | |
| 74 | /* really change the IMSI */ |
| 75 | |
| 76 | old_ms = bts->ms_store().get_ms(0, 0, imsi_); |
| 77 | if (old_ms) { |
| 78 | /* We cannot find m_ms by IMSI since we know that it has a |
| 79 | * different IMSI */ |
| 80 | OSMO_ASSERT(old_ms != m_ms); |
| 81 | |
| 82 | LOGP(DRLCMAC, LOGL_INFO, |
| 83 | "%s the IMSI '%s' was already assigned to another " |
| 84 | "MS object: TLLI = 0x%08x, that IMSI will be removed\n", |
| 85 | name(), imsi_, old_ms->tlli()); |
| 86 | old_ms->set_imsi(""); |
| 87 | } |
| 88 | |
| 89 | m_ms->set_imsi(imsi_); |
Holger Hans Peter Freyther | d868928 | 2013-08-24 20:51:06 +0200 | [diff] [blame] | 90 | } |
| 91 | |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 92 | uint8_t gprs_rlcmac_tbf::ta() const |
| 93 | { |
| 94 | return m_ms ? m_ms->ta() : m_ta; |
| 95 | } |
| 96 | |
| 97 | void gprs_rlcmac_tbf::set_ta(uint8_t ta) |
| 98 | { |
| 99 | if (ms()) |
| 100 | ms()->set_ta(ta); |
| 101 | |
| 102 | m_ta = ta; |
| 103 | } |
| 104 | |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 105 | uint8_t gprs_rlcmac_tbf::ms_class() const |
| 106 | { |
| 107 | return m_ms ? m_ms->ms_class() : m_ms_class; |
| 108 | } |
| 109 | |
| 110 | void gprs_rlcmac_tbf::set_ms_class(uint8_t ms_class_) |
| 111 | { |
| 112 | if (ms()) |
| 113 | ms()->set_ms_class(ms_class_); |
| 114 | |
| 115 | m_ms_class = ms_class_; |
| 116 | } |
| 117 | |
Jacob Erlbeck | a700dd9 | 2015-06-02 16:00:41 +0200 | [diff] [blame] | 118 | uint8_t gprs_rlcmac_tbf::current_cs() const |
| 119 | { |
| 120 | uint8_t cs; |
| 121 | if (direction == GPRS_RLCMAC_UL_TBF) |
| 122 | cs = m_ms ? m_ms->current_cs_ul() : bts->bts_data()->initial_cs_ul; |
| 123 | else |
| 124 | cs = m_ms ? m_ms->current_cs_dl() : bts->bts_data()->initial_cs_dl; |
| 125 | |
| 126 | return cs < 1 ? 1 : cs; |
| 127 | } |
| 128 | |
Jacob Erlbeck | 489a2b3 | 2015-05-28 19:07:01 +0200 | [diff] [blame] | 129 | gprs_llc_queue *gprs_rlcmac_tbf::llc_queue() |
| 130 | { |
| 131 | return m_ms ? m_ms->llc_queue() : NULL; |
| 132 | } |
| 133 | |
| 134 | const gprs_llc_queue *gprs_rlcmac_tbf::llc_queue() const |
| 135 | { |
| 136 | return m_ms ? m_ms->llc_queue() : NULL; |
| 137 | } |
| 138 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 139 | void gprs_rlcmac_tbf::set_ms(GprsMs *ms) |
| 140 | { |
| 141 | if (m_ms == ms) |
| 142 | return; |
| 143 | |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 144 | if (m_ms) { |
| 145 | /* Save the TA locally. This will also be called, if the MS |
| 146 | * object detaches itself from the TBF, for instance if |
| 147 | * attach_tbf() is called */ |
| 148 | m_ta = m_ms->ta(); |
| 149 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 150 | m_ms->detach_tbf(this); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 151 | } |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 152 | |
| 153 | m_ms = ms; |
| 154 | |
| 155 | if (m_ms) |
| 156 | m_ms->attach_tbf(this); |
| 157 | } |
| 158 | |
Jacob Erlbeck | be0cbc1 | 2015-05-18 14:35:11 +0200 | [diff] [blame] | 159 | void gprs_rlcmac_tbf::update_ms(uint32_t tlli, enum gprs_rlcmac_tbf_direction dir) |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 160 | { |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 161 | if (!ms()) |
Jacob Erlbeck | 0e50ce6 | 2015-05-21 16:58:22 +0200 | [diff] [blame] | 162 | return; |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 163 | |
| 164 | if (!tlli) |
| 165 | return; |
Jacob Erlbeck | 0e50ce6 | 2015-05-21 16:58:22 +0200 | [diff] [blame] | 166 | |
| 167 | if (dir == GPRS_RLCMAC_UL_TBF) |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 168 | ms()->set_tlli(tlli); |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 169 | else |
| 170 | ms()->confirm_tlli(tlli); |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 171 | } |
| 172 | |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 173 | gprs_rlcmac_ul_tbf *tbf_alloc_ul(struct gprs_rlcmac_bts *bts, |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 174 | int8_t use_trx, uint8_t ms_class, |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 175 | uint32_t tlli, uint8_t ta, GprsMs *ms) |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 176 | { |
| 177 | uint8_t trx; |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 178 | struct gprs_rlcmac_ul_tbf *tbf; |
Holger Hans Peter Freyther | 5697b4c | 2013-11-11 16:22:39 +0100 | [diff] [blame] | 179 | int8_t tfi; /* must be signed */ |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 180 | |
| 181 | #warning "Copy and paste with tbf_new_dl_assignment" |
Holger Hans Peter Freyther | ba26368 | 2013-12-25 19:15:57 +0100 | [diff] [blame] | 182 | /* create new TBF, use same TRX as DL TBF */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 183 | tfi = bts->bts->tfi_find_free(GPRS_RLCMAC_UL_TBF, &trx, use_trx); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 184 | if (tfi < 0) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 185 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 186 | /* FIXME: send reject */ |
| 187 | return NULL; |
| 188 | } |
| 189 | /* use multislot class of downlink TBF */ |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 190 | tbf = tbf_alloc_ul_tbf(bts, ms, tfi, trx, ms_class, 0); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 191 | if (!tbf) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 192 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 193 | /* FIXME: send reject */ |
| 194 | return NULL; |
| 195 | } |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 196 | tbf->m_contention_resolution_done = 1; |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 197 | tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 198 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
| 199 | tbf_timer_start(tbf, 3169, bts->t3169, 0); |
Jacob Erlbeck | be0cbc1 | 2015-05-18 14:35:11 +0200 | [diff] [blame] | 200 | tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 201 | OSMO_ASSERT(tbf->ms()); |
| 202 | |
| 203 | tbf->ms()->set_ta(ta); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 204 | |
| 205 | return tbf; |
| 206 | } |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 207 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 208 | static void tbf_unlink_pdch(struct gprs_rlcmac_tbf *tbf) |
| 209 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 210 | int ts; |
| 211 | |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 212 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 213 | tbf->trx->ul_tbf[tbf->tfi()] = NULL; |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 214 | else |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 215 | tbf->trx->dl_tbf[tbf->tfi()] = NULL; |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 216 | |
| 217 | for (ts = 0; ts < 8; ts++) { |
| 218 | if (!tbf->pdch[ts]) |
| 219 | continue; |
| 220 | |
| 221 | tbf->pdch[ts]->detach_tbf(tbf); |
| 222 | tbf->pdch[ts] = NULL; |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 223 | } |
| 224 | } |
| 225 | |
| 226 | void tbf_free(struct gprs_rlcmac_tbf *tbf) |
| 227 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 228 | /* Give final measurement report */ |
| 229 | gprs_rlcmac_rssi_rep(tbf); |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 230 | if (tbf->direction == GPRS_RLCMAC_DL_TBF) { |
| 231 | gprs_rlcmac_dl_tbf *dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(tbf); |
| 232 | gprs_rlcmac_lost_rep(dl_tbf); |
Jacob Erlbeck | d0261b7 | 2015-04-02 13:58:09 +0200 | [diff] [blame] | 233 | dl_tbf->cleanup(); |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 234 | } |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 235 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 236 | LOGP(DRLCMAC, LOGL_INFO, "%s free\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 237 | if (tbf->ul_ass_state != GPRS_RLCMAC_UL_ASS_NONE) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 238 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: Pending uplink " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 239 | "assignment. This may not happen, because the " |
| 240 | "assignment message never gets transmitted. Please " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 241 | "be sure not to free in this state. PLEASE FIX!\n", |
| 242 | tbf_name(tbf)); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 243 | if (tbf->dl_ass_state != GPRS_RLCMAC_DL_ASS_NONE) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 244 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: Pending downlink " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 245 | "assignment. This may not happen, because the " |
| 246 | "assignment message never gets transmitted. Please " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 247 | "be sure not to free in this state. PLEASE FIX!\n", |
| 248 | tbf_name(tbf)); |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 249 | tbf->stop_timer(); |
Holger Hans Peter Freyther | 782f6dd | 2013-10-26 18:31:51 +0200 | [diff] [blame] | 250 | #warning "TODO: Could/Should generate bssgp_tx_llc_discarded" |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 251 | tbf_unlink_pdch(tbf); |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 252 | llist_del(&tbf->list.list); |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 253 | |
| 254 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 255 | tbf->bts->tbf_ul_freed(); |
| 256 | else |
| 257 | tbf->bts->tbf_dl_freed(); |
| 258 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 259 | if (tbf->ms()) |
| 260 | tbf->set_ms(NULL); |
| 261 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 262 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF ends here **********\n"); |
| 263 | talloc_free(tbf); |
| 264 | } |
| 265 | |
Jacob Erlbeck | 9380f5d | 2015-07-03 12:38:59 +0200 | [diff] [blame] | 266 | int gprs_rlcmac_tbf::update(GprsMs *ms_) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 267 | { |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 268 | struct gprs_rlcmac_bts *bts_data = bts->bts_data(); |
Jacob Erlbeck | 9380f5d | 2015-07-03 12:38:59 +0200 | [diff] [blame] | 269 | int rc = -EINVAL; |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 270 | |
| 271 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF update **********\n"); |
| 272 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 273 | if (direction != GPRS_RLCMAC_DL_TBF) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 274 | return -EINVAL; |
| 275 | |
Jacob Erlbeck | 9380f5d | 2015-07-03 12:38:59 +0200 | [diff] [blame] | 276 | if (!ms_) |
| 277 | ms_ = ms(); |
| 278 | |
| 279 | if (!ms_) |
| 280 | return -EINVAL; |
| 281 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 282 | tbf_unlink_pdch(this); |
Jacob Erlbeck | 9380f5d | 2015-07-03 12:38:59 +0200 | [diff] [blame] | 283 | rc = bts_data->alloc_algorithm(bts_data, ms_, this, bts_data->alloc_algorithm_curst, 0); |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 284 | /* if no resource */ |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 285 | if (rc < 0) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 286 | LOGP(DRLCMAC, LOGL_ERROR, "No resource after update???\n"); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 287 | return -rc; |
| 288 | } |
| 289 | |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf) |
| 294 | { |
| 295 | if (tbf->control_ts == 0xff) |
| 296 | LOGP(DRLCMAC, LOGL_INFO, "- Setting Control TS %d\n", |
| 297 | tbf->first_common_ts); |
| 298 | else if (tbf->control_ts != tbf->first_common_ts) |
| 299 | LOGP(DRLCMAC, LOGL_INFO, "- Changing Control TS %d\n", |
| 300 | tbf->first_common_ts); |
| 301 | tbf->control_ts = tbf->first_common_ts; |
| 302 | |
| 303 | return 0; |
| 304 | } |
| 305 | |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 306 | const char *gprs_rlcmac_tbf::tbf_state_name[] = { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 307 | "NULL", |
| 308 | "ASSIGN", |
| 309 | "FLOW", |
| 310 | "FINISHED", |
| 311 | "WAIT RELEASE", |
| 312 | "RELEASING", |
| 313 | }; |
| 314 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 315 | void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T, |
| 316 | unsigned int seconds, unsigned int microseconds) |
| 317 | { |
| 318 | if (!osmo_timer_pending(&tbf->timer)) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 319 | LOGP(DRLCMAC, LOGL_DEBUG, "%s starting timer %u.\n", |
| 320 | tbf_name(tbf), T); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 321 | else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 322 | LOGP(DRLCMAC, LOGL_DEBUG, "%s restarting timer %u " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 323 | "while old timer %u pending \n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 324 | tbf_name(tbf), T, tbf->T); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 325 | |
| 326 | tbf->T = T; |
| 327 | tbf->num_T_exp = 0; |
| 328 | |
| 329 | /* Tunning timers can be safely re-scheduled. */ |
| 330 | tbf->timer.data = tbf; |
| 331 | tbf->timer.cb = &tbf_timer_cb; |
| 332 | |
| 333 | osmo_timer_schedule(&tbf->timer, seconds, microseconds); |
| 334 | } |
| 335 | |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 336 | void gprs_rlcmac_tbf::stop_t3191() |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 337 | { |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 338 | return stop_timer(); |
| 339 | } |
| 340 | |
| 341 | void gprs_rlcmac_tbf::stop_timer() |
| 342 | { |
| 343 | if (osmo_timer_pending(&timer)) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 344 | LOGP(DRLCMAC, LOGL_DEBUG, "%s stopping timer %u.\n", |
| 345 | tbf_name(this), T); |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 346 | osmo_timer_del(&timer); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 347 | } |
| 348 | } |
| 349 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 350 | void gprs_rlcmac_tbf::poll_timeout() |
| 351 | { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 352 | LOGP(DRLCMAC, LOGL_NOTICE, "%s poll timeout\n", |
| 353 | tbf_name(this)); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 354 | |
| 355 | poll_state = GPRS_RLCMAC_POLL_NONE; |
| 356 | |
| 357 | if (ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) { |
| 358 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) { |
| 359 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 360 | "PACKET CONTROL ACK for PACKET UPLINK ACK\n"); |
| 361 | rlcmac_diag(); |
| 362 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK); |
| 363 | } |
| 364 | ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 365 | if (state_is(GPRS_RLCMAC_FINISHED)) { |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 366 | gprs_rlcmac_ul_tbf *ul_tbf = static_cast<gprs_rlcmac_ul_tbf *>(this); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 367 | ul_tbf->m_n3103++; |
| 368 | if (ul_tbf->m_n3103 == ul_tbf->bts->bts_data()->n3103) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 369 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 370 | "- N3103 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 371 | ul_tbf->set_state(GPRS_RLCMAC_RELEASING); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 372 | tbf_timer_start(ul_tbf, 3169, ul_tbf->bts->bts_data()->t3169, 0); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 373 | return; |
| 374 | } |
| 375 | /* reschedule UL ack */ |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 376 | ul_tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_SEND_ACK; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 377 | } |
| 378 | } else if (ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) { |
| 379 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) { |
| 380 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 381 | "PACKET CONTROL ACK for PACKET UPLINK " |
| 382 | "ASSIGNMENT.\n"); |
| 383 | rlcmac_diag(); |
| 384 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS); |
| 385 | } |
| 386 | ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 387 | n3105++; |
| 388 | if (n3105 == bts_data()->n3105) { |
| 389 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 390 | set_state(GPRS_RLCMAC_RELEASING); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 391 | tbf_timer_start(this, 3195, bts_data()->t3195, 0); |
| 392 | return; |
| 393 | } |
| 394 | /* reschedule UL assignment */ |
| 395 | ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 396 | } else if (dl_ass_state == GPRS_RLCMAC_DL_ASS_WAIT_ACK) { |
| 397 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) { |
| 398 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 399 | "PACKET CONTROL ACK for PACKET DOWNLINK " |
| 400 | "ASSIGNMENT.\n"); |
| 401 | rlcmac_diag(); |
| 402 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS); |
| 403 | } |
| 404 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 405 | n3105++; |
| 406 | if (n3105 == bts->bts_data()->n3105) { |
| 407 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 408 | set_state(GPRS_RLCMAC_RELEASING); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 409 | tbf_timer_start(this, 3195, bts_data()->t3195, 0); |
| 410 | return; |
| 411 | } |
| 412 | /* reschedule DL assignment */ |
| 413 | dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; |
| 414 | } else if (direction == GPRS_RLCMAC_DL_TBF) { |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 415 | gprs_rlcmac_dl_tbf *dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(this); |
| 416 | |
| 417 | if (!(dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 418 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 419 | "PACKET DOWNLINK ACK.\n"); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 420 | dl_tbf->rlcmac_diag(); |
| 421 | dl_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 422 | } |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 423 | dl_tbf->n3105++; |
| 424 | if (dl_tbf->n3105 == dl_tbf->bts->bts_data()->n3105) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 425 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 426 | dl_tbf->set_state(GPRS_RLCMAC_RELEASING); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 427 | tbf_timer_start(dl_tbf, 3195, dl_tbf->bts_data()->t3195, 0); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 428 | return; |
| 429 | } |
| 430 | /* resend IMM.ASS on CCCH on timeout */ |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 431 | if ((dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH)) |
| 432 | && !(dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 433 | LOGP(DRLCMAC, LOGL_DEBUG, "Re-send dowlink assignment " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 434 | "for %s on PCH (IMSI=%s)\n", |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 435 | tbf_name(dl_tbf), |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 436 | imsi()); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 437 | /* send immediate assignment */ |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 438 | dl_tbf->bts->snd_dl_ass(dl_tbf, 0, imsi()); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 439 | dl_tbf->m_wait_confirm = 1; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 440 | } |
| 441 | } else |
| 442 | LOGP(DRLCMAC, LOGL_ERROR, "- Poll Timeout, but no event!\n"); |
| 443 | } |
| 444 | |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 445 | static int setup_tbf(struct gprs_rlcmac_tbf *tbf, struct gprs_rlcmac_bts *bts, |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 446 | GprsMs *ms, uint8_t tfi, uint8_t trx, |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 447 | uint8_t ms_class, uint8_t single_slot) |
| 448 | { |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 449 | int rc; |
| 450 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 451 | if (trx >= 8 || tfi >= 32) |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 452 | return -1; |
Daniel Willmann | 078bb71 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 453 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 454 | if (!tbf) |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 455 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 456 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 457 | /* Back pointer for PODS llist compatibility */ |
| 458 | tbf->list.back = tbf; |
| 459 | |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 460 | tbf->m_created_ts = time(NULL); |
Holger Hans Peter Freyther | 9f0c1d2 | 2013-10-19 21:24:34 +0200 | [diff] [blame] | 461 | tbf->bts = bts->bts; |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 462 | tbf->m_tfi = tfi; |
Holger Hans Peter Freyther | 743bafa | 2013-09-29 07:50:50 +0200 | [diff] [blame] | 463 | tbf->trx = &bts->trx[trx]; |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 464 | tbf->set_ms_class(ms_class); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 465 | /* select algorithm */ |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 466 | rc = bts->alloc_algorithm(bts, ms, tbf, bts->alloc_algorithm_curst, |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 467 | single_slot); |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 468 | /* if no resource */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 469 | if (rc < 0) { |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 470 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 471 | } |
| 472 | /* assign control ts */ |
| 473 | tbf->control_ts = 0xff; |
| 474 | rc = tbf_assign_control_ts(tbf); |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 475 | /* if no resource */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 476 | if (rc < 0) { |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 477 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 478 | } |
| 479 | |
| 480 | /* set timestamp */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 481 | gettimeofday(&tbf->meas.rssi_tv, NULL); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 482 | |
Holger Hans Peter Freyther | 758dc12 | 2013-11-06 20:39:45 +0100 | [diff] [blame] | 483 | tbf->m_llc.init(); |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 484 | tbf->set_ms(ms); |
| 485 | |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | |
| 490 | struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 491 | GprsMs *ms, uint8_t tfi, uint8_t trx, |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 492 | uint8_t ms_class, uint8_t single_slot) |
| 493 | { |
| 494 | struct gprs_rlcmac_ul_tbf *tbf; |
| 495 | int rc; |
| 496 | |
| 497 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
| 498 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 499 | "MS_CLASS=%d\n", "UL", tfi, trx, ms_class); |
| 500 | |
| 501 | if (trx >= 8 || tfi >= 32) |
| 502 | return NULL; |
| 503 | |
| 504 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_ul_tbf); |
| 505 | |
| 506 | if (!tbf) |
| 507 | return NULL; |
| 508 | |
| 509 | tbf->direction = GPRS_RLCMAC_UL_TBF; |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 510 | |
Jacob Erlbeck | cb1b494 | 2015-06-19 10:59:58 +0200 | [diff] [blame] | 511 | if (!ms) |
| 512 | ms = bts->bts->ms_alloc(ms_class); |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 513 | |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 514 | rc = setup_tbf(tbf, bts, ms, tfi, trx, ms_class, single_slot); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 515 | /* if no resource */ |
| 516 | if (rc < 0) { |
| 517 | talloc_free(tbf); |
| 518 | return NULL; |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 519 | } |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 520 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 521 | llist_add(&tbf->list.list, &bts->ul_tbfs); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 522 | tbf->bts->tbf_ul_created(); |
| 523 | |
| 524 | return tbf; |
| 525 | } |
| 526 | |
| 527 | struct gprs_rlcmac_dl_tbf *tbf_alloc_dl_tbf(struct gprs_rlcmac_bts *bts, |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 528 | GprsMs *ms, uint8_t tfi, uint8_t trx, |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 529 | uint8_t ms_class, uint8_t single_slot) |
| 530 | { |
| 531 | struct gprs_rlcmac_dl_tbf *tbf; |
| 532 | int rc; |
| 533 | |
| 534 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
| 535 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 536 | "MS_CLASS=%d\n", "DL", tfi, trx, ms_class); |
| 537 | |
| 538 | if (trx >= 8 || tfi >= 32) |
| 539 | return NULL; |
| 540 | |
| 541 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_dl_tbf); |
| 542 | |
| 543 | if (!tbf) |
| 544 | return NULL; |
| 545 | |
| 546 | tbf->direction = GPRS_RLCMAC_DL_TBF; |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 547 | |
Jacob Erlbeck | cb1b494 | 2015-06-19 10:59:58 +0200 | [diff] [blame] | 548 | if (!ms) |
| 549 | ms = bts->bts->ms_alloc(ms_class); |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 550 | |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 551 | rc = setup_tbf(tbf, bts, ms, tfi, trx, ms_class, single_slot); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 552 | /* if no resource */ |
| 553 | if (rc < 0) { |
| 554 | talloc_free(tbf); |
| 555 | return NULL; |
| 556 | } |
| 557 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 558 | llist_add(&tbf->list.list, &bts->dl_tbfs); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 559 | tbf->bts->tbf_dl_created(); |
| 560 | |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 561 | tbf->m_last_dl_poll_fn = -1; |
Jacob Erlbeck | 3bed5d1 | 2015-03-19 11:22:38 +0100 | [diff] [blame] | 562 | tbf->m_last_dl_drained_fn = -1; |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 563 | |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 564 | gettimeofday(&tbf->m_bw.dl_bw_tv, NULL); |
| 565 | gettimeofday(&tbf->m_bw.dl_loss_tv, NULL); |
| 566 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 567 | return tbf; |
| 568 | } |
| 569 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 570 | static void tbf_timer_cb(void *_tbf) |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 571 | { |
| 572 | struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 573 | tbf->handle_timeout(); |
| 574 | } |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 575 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 576 | void gprs_rlcmac_tbf::handle_timeout() |
| 577 | { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 578 | LOGP(DRLCMAC, LOGL_DEBUG, "%s timer %u expired.\n", |
| 579 | tbf_name(this), T); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 580 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 581 | num_T_exp++; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 582 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 583 | switch (T) { |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 584 | case 0: /* assignment */ |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 585 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) { |
| 586 | if (state_is(GPRS_RLCMAC_ASSIGN)) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 587 | LOGP(DRLCMAC, LOGL_NOTICE, "%s releasing due to " |
| 588 | "PACCH assignment timeout.\n", tbf_name(this)); |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 589 | tbf_free(this); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 590 | return; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 591 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 592 | LOGP(DRLCMAC, LOGL_ERROR, "Error: %s is not " |
| 593 | "in assign state\n", tbf_name(this)); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 594 | } |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 595 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) { |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 596 | gprs_rlcmac_dl_tbf *dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(this); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 597 | dl_tbf->m_wait_confirm = 0; |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 598 | if (dl_tbf->state_is(GPRS_RLCMAC_ASSIGN)) { |
| 599 | tbf_assign_control_ts(dl_tbf); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 600 | |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 601 | if (!dl_tbf->upgrade_to_multislot) { |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 602 | /* change state to FLOW, so scheduler |
| 603 | * will start transmission */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 604 | dl_tbf->set_state(GPRS_RLCMAC_FLOW); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 605 | break; |
| 606 | } |
| 607 | |
| 608 | /* This tbf can be upgraded to use multiple DL |
| 609 | * timeslots and now that there is already one |
| 610 | * slot assigned send another DL assignment via |
| 611 | * PDCH. */ |
| 612 | |
| 613 | /* keep to flags */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 614 | dl_tbf->state_flags &= GPRS_RLCMAC_FLAG_TO_MASK; |
| 615 | dl_tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 616 | |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 617 | dl_tbf->update(); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 618 | |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 619 | dl_tbf->bts->trigger_dl_ass(dl_tbf, dl_tbf); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 620 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 621 | LOGP(DRLCMAC, LOGL_NOTICE, "%s Continue flow after " |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 622 | "IMM.ASS confirm\n", tbf_name(dl_tbf)); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 623 | } |
| 624 | break; |
| 625 | case 3169: |
| 626 | case 3191: |
| 627 | case 3195: |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 628 | LOGP(DRLCMAC, LOGL_NOTICE, "%s T%d timeout during " |
| 629 | "transsmission\n", tbf_name(this), T); |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 630 | rlcmac_diag(); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 631 | /* fall through */ |
| 632 | case 3193: |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 633 | LOGP(DRLCMAC, LOGL_DEBUG, |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 634 | "%s will be freed due to timeout\n", tbf_name(this)); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 635 | /* free TBF */ |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 636 | tbf_free(this); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 637 | return; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 638 | break; |
| 639 | default: |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 640 | LOGP(DRLCMAC, LOGL_ERROR, |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 641 | "%s timer expired in unknown mode: %u\n", tbf_name(this), T); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 642 | } |
| 643 | } |
| 644 | |
| 645 | int gprs_rlcmac_tbf::rlcmac_diag() |
| 646 | { |
| 647 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) |
| 648 | LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on CCCH\n"); |
| 649 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) |
| 650 | LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on PACCH\n"); |
| 651 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_UL_DATA))) |
| 652 | LOGP(DRLCMAC, LOGL_NOTICE, "- Uplink data was received\n"); |
| 653 | else if (direction == GPRS_RLCMAC_UL_TBF) |
| 654 | LOGP(DRLCMAC, LOGL_NOTICE, "- No uplink data received yet\n"); |
| 655 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) |
| 656 | LOGP(DRLCMAC, LOGL_NOTICE, "- Downlink ACK was received\n"); |
| 657 | else if (direction == GPRS_RLCMAC_DL_TBF) |
| 658 | LOGP(DRLCMAC, LOGL_NOTICE, "- No downlink ACK received yet\n"); |
| 659 | |
| 660 | return 0; |
| 661 | } |
| 662 | |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 663 | struct msgb *gprs_rlcmac_tbf::create_dl_ass(uint32_t fn) |
| 664 | { |
| 665 | struct msgb *msg; |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 666 | struct gprs_rlcmac_dl_tbf *new_dl_tbf = NULL; |
Holger Hans Peter Freyther | 9977e15 | 2013-11-24 22:52:10 +0100 | [diff] [blame] | 667 | int poll_ass_dl = 1; |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 668 | |
Holger Hans Peter Freyther | 9977e15 | 2013-11-24 22:52:10 +0100 | [diff] [blame] | 669 | if (direction == GPRS_RLCMAC_DL_TBF && control_ts != first_common_ts) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 670 | LOGP(DRLCMAC, LOGL_NOTICE, "Cannot poll for downlink " |
| 671 | "assigment, because MS cannot reply. (control TS=%d, " |
| 672 | "first common TS=%d)\n", control_ts, |
| 673 | first_common_ts); |
| 674 | poll_ass_dl = 0; |
| 675 | } |
| 676 | if (poll_ass_dl) { |
| 677 | if (poll_state != GPRS_RLCMAC_POLL_NONE) { |
| 678 | LOGP(DRLCMAC, LOGL_DEBUG, "Polling is already sheduled " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 679 | "for %s, so we must wait for downlink " |
| 680 | "assignment...\n", tbf_name(this)); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 681 | return NULL; |
| 682 | } |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 683 | if (bts->sba()->find(trx->trx_no, control_ts, (fn + 13) % 2715648)) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 684 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already " |
| 685 | "scheduled for single block allocation...\n"); |
| 686 | return NULL; |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | /* on uplink TBF we get the downlink TBF to be assigned. */ |
| 691 | if (direction == GPRS_RLCMAC_UL_TBF) { |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 692 | gprs_rlcmac_ul_tbf *ul_tbf = static_cast<gprs_rlcmac_ul_tbf *>(this); |
| 693 | |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 694 | /* be sure to check first, if contention resolution is done, |
| 695 | * otherwise we cannot send the assignment yet */ |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 696 | if (!ul_tbf->m_contention_resolution_done) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 697 | LOGP(DRLCMAC, LOGL_DEBUG, "Cannot assign DL TBF now, " |
| 698 | "because contention resolution is not " |
| 699 | "finished.\n"); |
| 700 | return NULL; |
| 701 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 702 | } |
| 703 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 704 | if (ms()) |
| 705 | new_dl_tbf = ms()->dl_tbf(); |
| 706 | |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 707 | if (!new_dl_tbf) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 708 | LOGP(DRLCMACDL, LOGL_ERROR, "We have a schedule for downlink " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 709 | "assignment at uplink %s, but there is no downlink " |
| 710 | "TBF\n", tbf_name(this)); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 711 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
| 712 | return NULL; |
| 713 | } |
| 714 | |
Holger Hans Peter Freyther | f5c9747 | 2014-12-26 18:32:00 +0100 | [diff] [blame] | 715 | new_dl_tbf->was_releasing = was_releasing; |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 716 | msg = msgb_alloc(23, "rlcmac_dl_ass"); |
| 717 | if (!msg) |
| 718 | return NULL; |
| 719 | bitvec *ass_vec = bitvec_alloc(23); |
| 720 | if (!ass_vec) { |
| 721 | msgb_free(msg); |
| 722 | return NULL; |
| 723 | } |
| 724 | bitvec_unhex(ass_vec, |
| 725 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 726 | LOGP(DRLCMAC, LOGL_INFO, "%s start Packet Downlink Assignment (PACCH)\n", tbf_name(new_dl_tbf)); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 727 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 728 | Encoding::write_packet_downlink_assignment(mac_control_block, m_tfi, |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 729 | (direction == GPRS_RLCMAC_DL_TBF), new_dl_tbf, |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 730 | poll_ass_dl, bts_data()->alpha, bts_data()->gamma, -1, 0); |
| 731 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++\n"); |
| 732 | encode_gsm_rlcmac_downlink(ass_vec, mac_control_block); |
| 733 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 734 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Downlink Assignment -------------------------\n"); |
| 735 | bitvec_pack(ass_vec, msgb_put(msg, 23)); |
| 736 | bitvec_free(ass_vec); |
| 737 | talloc_free(mac_control_block); |
| 738 | |
| 739 | if (poll_ass_dl) { |
| 740 | poll_state = GPRS_RLCMAC_POLL_SCHED; |
| 741 | poll_fn = (fn + 13) % 2715648; |
| 742 | dl_ass_state = GPRS_RLCMAC_DL_ASS_WAIT_ACK; |
| 743 | } else { |
| 744 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 745 | new_dl_tbf->set_state(GPRS_RLCMAC_FLOW); |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 746 | tbf_assign_control_ts(new_dl_tbf); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 747 | /* stop pending assignment timer */ |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 748 | new_dl_tbf->stop_timer(); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 749 | |
| 750 | } |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 751 | |
| 752 | return msg; |
| 753 | } |
| 754 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 755 | struct msgb *gprs_rlcmac_tbf::create_ul_ass(uint32_t fn) |
| 756 | { |
| 757 | struct msgb *msg; |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 758 | struct gprs_rlcmac_ul_tbf *new_tbf = NULL; |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 759 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 760 | if (poll_state != GPRS_RLCMAC_POLL_NONE) { |
| 761 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 762 | "sheduled for %s, so we must wait for uplink " |
| 763 | "assignment...\n", tbf_name(this)); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 764 | return NULL; |
| 765 | } |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 766 | if (bts->sba()->find(trx->trx_no, control_ts, (fn + 13) % 2715648)) { |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 767 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already scheduled for " |
| 768 | "single block allocation...\n"); |
| 769 | return NULL; |
| 770 | } |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 771 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 772 | if (ms()) |
| 773 | new_tbf = ms()->ul_tbf(); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 774 | if (!new_tbf) { |
| 775 | LOGP(DRLCMACUL, LOGL_ERROR, "We have a schedule for uplink " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 776 | "assignment at downlink %s, but there is no uplink " |
| 777 | "TBF\n", tbf_name(this)); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 778 | ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
| 779 | return NULL; |
| 780 | } |
| 781 | |
| 782 | msg = msgb_alloc(23, "rlcmac_ul_ass"); |
| 783 | if (!msg) |
| 784 | return NULL; |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 785 | LOGP(DRLCMAC, LOGL_INFO, "%ss start Packet Uplink Assignment (PACCH)\n", tbf_name(new_tbf)); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 786 | bitvec *ass_vec = bitvec_alloc(23); |
| 787 | if (!ass_vec) { |
| 788 | msgb_free(msg); |
| 789 | return NULL; |
| 790 | } |
| 791 | bitvec_unhex(ass_vec, |
| 792 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 793 | Encoding::write_packet_uplink_assignment(bts_data(), ass_vec, m_tfi, |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 794 | (direction == GPRS_RLCMAC_DL_TBF), tlli(), |
| 795 | is_tlli_valid(), new_tbf, 1, bts_data()->alpha, |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 796 | bts_data()->gamma, -1); |
| 797 | bitvec_pack(ass_vec, msgb_put(msg, 23)); |
| 798 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| 799 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Uplink Assignment +++++++++++++++++++++++++\n"); |
| 800 | decode_gsm_rlcmac_downlink(ass_vec, mac_control_block); |
| 801 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 802 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Uplink Assignment -------------------------\n"); |
| 803 | bitvec_free(ass_vec); |
| 804 | talloc_free(mac_control_block); |
| 805 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 806 | poll_state = GPRS_RLCMAC_POLL_SCHED; |
| 807 | poll_fn = (fn + 13) % 2715648; |
| 808 | ul_ass_state = GPRS_RLCMAC_UL_ASS_WAIT_ACK; |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 809 | |
| 810 | return msg; |
| 811 | } |
| 812 | |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 813 | void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_trx *trx) |
| 814 | { |
| 815 | for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| 816 | struct gprs_rlcmac_tbf *tbf; |
| 817 | |
| 818 | tbf = trx->ul_tbf[tfi]; |
| 819 | if (tbf) |
| 820 | tbf_free(tbf); |
| 821 | tbf = trx->dl_tbf[tfi]; |
| 822 | if (tbf) |
| 823 | tbf_free(tbf); |
| 824 | } |
| 825 | } |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 826 | |
| 827 | void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_pdch *pdch) |
| 828 | { |
| 829 | for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| 830 | struct gprs_rlcmac_tbf *tbf; |
| 831 | |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 832 | tbf = pdch->ul_tbf_by_tfi(tfi); |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 833 | if (tbf) |
| 834 | tbf_free(tbf); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 835 | tbf = pdch->dl_tbf_by_tfi(tfi); |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 836 | if (tbf) |
| 837 | tbf_free(tbf); |
| 838 | } |
| 839 | } |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 840 | |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 841 | int gprs_rlcmac_tbf::extract_tlli(const uint8_t *data, const size_t len) |
| 842 | { |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 843 | struct gprs_rlcmac_tbf *dl_tbf = NULL; |
| 844 | struct gprs_rlcmac_tbf *ul_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 845 | struct rlc_ul_header *rh = (struct rlc_ul_header *)data; |
| 846 | uint32_t new_tlli; |
| 847 | int rc; |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 848 | GprsMs *old_ms; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 849 | |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 850 | OSMO_ASSERT(direction == GPRS_RLCMAC_UL_TBF); |
| 851 | |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 852 | /* no TLLI yet */ |
| 853 | if (!rh->ti) { |
| 854 | LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA TFI=%d without " |
| 855 | "TLLI, but no TLLI received yet\n", rh->tfi); |
| 856 | return 0; |
| 857 | } |
| 858 | rc = Decoding::tlli_from_ul_data(data, len, &new_tlli); |
| 859 | if (rc) { |
| 860 | bts->decode_error(); |
| 861 | LOGP(DRLCMACUL, LOGL_NOTICE, "Failed to decode TLLI " |
| 862 | "of UL DATA TFI=%d.\n", rh->tfi); |
| 863 | return 0; |
| 864 | } |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 865 | |
| 866 | old_ms = bts->ms_by_tlli(new_tlli); |
| 867 | if (old_ms) { |
| 868 | /* Get them before calling set_ms() */ |
| 869 | dl_tbf = old_ms->dl_tbf(); |
| 870 | ul_tbf = old_ms->ul_tbf(); |
| 871 | |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 872 | if (!ms()) |
| 873 | set_ms(old_ms); |
| 874 | |
| 875 | /* there might be an active and valid downlink TBF */ |
| 876 | if (!ms()->dl_tbf() && dl_tbf) |
| 877 | /* Move it to the current MS */ |
| 878 | dl_tbf->set_ms(ms()); |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 879 | } |
| 880 | |
Jacob Erlbeck | be0cbc1 | 2015-05-18 14:35:11 +0200 | [diff] [blame] | 881 | /* The TLLI has been taken from an UL message */ |
| 882 | update_ms(new_tlli, GPRS_RLCMAC_UL_TBF); |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 883 | LOGP(DRLCMACUL, LOGL_INFO, "Decoded premier TLLI=0x%08x of " |
| 884 | "UL DATA TFI=%d.\n", tlli(), rh->tfi); |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 885 | if (dl_tbf && dl_tbf->ms() != ms()) { |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 886 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
| 887 | "TLLI=0x%08x while %s still exists. " |
| 888 | "Killing pending DL TBF\n", tlli(), |
| 889 | tbf_name(dl_tbf)); |
| 890 | tbf_free(dl_tbf); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 891 | dl_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 892 | } |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 893 | if (ul_tbf && ul_tbf->ms() != ms()) { |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 894 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
| 895 | "TLLI=0x%08x while %s still exists. " |
| 896 | "Killing pending UL TBF\n", tlli(), |
| 897 | tbf_name(ul_tbf)); |
| 898 | tbf_free(ul_tbf); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 899 | ul_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 900 | } |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 901 | return 1; |
| 902 | } |
| 903 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 904 | const char *tbf_name(gprs_rlcmac_tbf *tbf) |
| 905 | { |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 906 | return tbf->name(); |
| 907 | } |
| 908 | |
| 909 | const char *gprs_rlcmac_tbf::name() const |
| 910 | { |
Jacob Erlbeck | 7bf9f49 | 2015-06-11 12:45:47 +0200 | [diff] [blame] | 911 | if (this == NULL) |
| 912 | return "(no TBF)"; |
| 913 | |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 914 | snprintf(m_name_buf, sizeof(m_name_buf) - 1, |
| 915 | "TBF(TFI=%d TLLI=0x%08x DIR=%s STATE=%s)", |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 916 | m_tfi, tlli(), |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 917 | direction == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| 918 | state_name() |
| 919 | ); |
| 920 | m_name_buf[sizeof(m_name_buf) - 1] = '\0'; |
| 921 | return m_name_buf; |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 922 | } |
Holger Hans Peter Freyther | 758dc12 | 2013-11-06 20:39:45 +0100 | [diff] [blame] | 923 | |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 924 | void gprs_rlcmac_tbf::rotate_in_list() |
| 925 | { |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 926 | llist_del(&list.list); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 927 | if (direction == GPRS_RLCMAC_UL_TBF) |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 928 | llist_add(&list.list, &bts->bts_data()->ul_tbfs); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 929 | else |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 930 | llist_add(&list.list, &bts->bts_data()->dl_tbfs); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 931 | } |
Holger Hans Peter Freyther | 8f399de | 2013-12-25 20:22:35 +0100 | [diff] [blame] | 932 | |
| 933 | uint8_t gprs_rlcmac_tbf::tsc() const |
| 934 | { |
| 935 | return trx->pdch[first_ts].tsc; |
| 936 | } |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 937 | |
Jacob Erlbeck | 617c712 | 2015-06-30 09:18:30 +0200 | [diff] [blame^] | 938 | uint8_t gprs_rlcmac_tbf::dl_slots() const |
| 939 | { |
| 940 | uint8_t slots = 0; |
| 941 | size_t i; |
| 942 | |
| 943 | if (direction == GPRS_RLCMAC_UL_TBF) |
| 944 | return 0; |
| 945 | |
| 946 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 947 | if (pdch[i]) |
| 948 | slots |= 1 << i; |
| 949 | |
| 950 | return slots; |
| 951 | } |
| 952 | |
| 953 | uint8_t gprs_rlcmac_tbf::ul_slots() const |
| 954 | { |
| 955 | uint8_t slots = 0; |
| 956 | size_t i; |
| 957 | |
| 958 | if (direction == GPRS_RLCMAC_DL_TBF) { |
| 959 | if (control_ts < 8) |
| 960 | slots |= 1 << control_ts; |
| 961 | if (first_common_ts < 8) |
| 962 | slots |= 1 << first_common_ts; |
| 963 | |
| 964 | return slots; |
| 965 | } |
| 966 | |
| 967 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 968 | if (pdch[i]) |
| 969 | slots |= 1 << i; |
| 970 | |
| 971 | return slots; |
| 972 | } |
| 973 | |
Jacob Erlbeck | c0c580c | 2015-04-30 15:59:01 +0200 | [diff] [blame] | 974 | void tbf_print_vty_info(struct vty *vty, struct llist_head *ltbf) |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 975 | { |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 976 | gprs_rlcmac_tbf *tbf = llist_pods_entry(ltbf, gprs_rlcmac_tbf); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 977 | |
Daniel Willmann | 772415f | 2014-01-15 17:06:51 +0100 | [diff] [blame] | 978 | vty_out(vty, "TBF: TFI=%d TLLI=0x%08x (%s) DIR=%s IMSI=%s%s", tbf->tfi(), |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 979 | tbf->tlli(), tbf->is_tlli_valid() ? "valid" : "invalid", |
| 980 | tbf->direction == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| 981 | tbf->imsi(), VTY_NEWLINE); |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 982 | vty_out(vty, " created=%lu state=%08x 1st_TS=%d 1st_cTS=%d ctrl_TS=%d " |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 983 | "MS_CLASS=%d%s", |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 984 | tbf->created_ts(), tbf->state_flags, tbf->first_ts, |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 985 | tbf->first_common_ts, tbf->control_ts, tbf->ms_class(), |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 986 | VTY_NEWLINE); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 987 | vty_out(vty, " TS_alloc="); |
| 988 | for (int i = 0; i < 8; i++) { |
| 989 | if (tbf->pdch[i]) |
| 990 | vty_out(vty, "%d ", i); |
| 991 | } |
Jacob Erlbeck | a700dd9 | 2015-06-02 16:00:41 +0200 | [diff] [blame] | 992 | vty_out(vty, " CS=%d%s%s", tbf->ms() ? tbf->ms()->current_cs_dl() : 1, |
| 993 | VTY_NEWLINE, VTY_NEWLINE); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 994 | } |