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 | 0e50ce6 | 2015-05-21 16:58:22 +0200 | [diff] [blame] | 161 | if (!ms()) { |
| 162 | GprsMs *new_ms = bts->ms_store().get_ms(tlli); |
Jacob Erlbeck | a098c19 | 2015-05-28 16:11:19 +0200 | [diff] [blame] | 163 | if (!new_ms) { |
Jacob Erlbeck | 0e50ce6 | 2015-05-21 16:58:22 +0200 | [diff] [blame] | 164 | new_ms = bts->ms_store().create_ms(tlli, dir); |
Jacob Erlbeck | a098c19 | 2015-05-28 16:11:19 +0200 | [diff] [blame] | 165 | new_ms->set_timeout(bts->bts_data()->ms_idle_sec); |
| 166 | } |
Jacob Erlbeck | 0e50ce6 | 2015-05-21 16:58:22 +0200 | [diff] [blame] | 167 | |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 168 | if (dir == GPRS_RLCMAC_UL_TBF) { |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 169 | new_ms->set_ta(m_ta); |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 170 | } |
| 171 | |
| 172 | if (m_ms_class) |
| 173 | new_ms->set_ms_class(m_ms_class); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 174 | |
Jacob Erlbeck | 0e50ce6 | 2015-05-21 16:58:22 +0200 | [diff] [blame] | 175 | set_ms(new_ms); |
| 176 | return; |
| 177 | } |
| 178 | |
| 179 | if (dir == GPRS_RLCMAC_UL_TBF) |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 180 | ms()->set_tlli(tlli); |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 181 | else |
| 182 | ms()->confirm_tlli(tlli); |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 183 | } |
| 184 | |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 185 | 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] | 186 | int8_t use_trx, uint8_t ms_class, |
| 187 | uint32_t tlli, uint8_t ta, struct gprs_rlcmac_tbf *dl_tbf) |
| 188 | { |
| 189 | uint8_t trx; |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 190 | struct gprs_rlcmac_ul_tbf *tbf; |
Holger Hans Peter Freyther | 5697b4c | 2013-11-11 16:22:39 +0100 | [diff] [blame] | 191 | int8_t tfi; /* must be signed */ |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 192 | |
| 193 | #warning "Copy and paste with tbf_new_dl_assignment" |
Holger Hans Peter Freyther | ba26368 | 2013-12-25 19:15:57 +0100 | [diff] [blame] | 194 | /* create new TBF, use same TRX as DL TBF */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 195 | 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] | 196 | if (tfi < 0) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 197 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 198 | /* FIXME: send reject */ |
| 199 | return NULL; |
| 200 | } |
| 201 | /* use multislot class of downlink TBF */ |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 202 | tbf = tbf_alloc_ul_tbf(bts, dl_tbf, tfi, trx, ms_class, 0); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 203 | if (!tbf) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 204 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 205 | /* FIXME: send reject */ |
| 206 | return NULL; |
| 207 | } |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 208 | tbf->m_contention_resolution_done = 1; |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 209 | tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 210 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
| 211 | tbf_timer_start(tbf, 3169, bts->t3169, 0); |
Jacob Erlbeck | be0cbc1 | 2015-05-18 14:35:11 +0200 | [diff] [blame] | 212 | tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 213 | OSMO_ASSERT(tbf->ms()); |
| 214 | |
| 215 | tbf->ms()->set_ta(ta); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 216 | |
| 217 | return tbf; |
| 218 | } |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 219 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 220 | static void tbf_unlink_pdch(struct gprs_rlcmac_tbf *tbf) |
| 221 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 222 | int ts; |
| 223 | |
| 224 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 225 | tbf->trx->ul_tbf[tbf->tfi()] = NULL; |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 226 | for (ts = 0; ts < 8; ts++) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 227 | tbf->pdch[ts] = NULL; |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 228 | } else { |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 229 | tbf->trx->dl_tbf[tbf->tfi()] = NULL; |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 230 | for (ts = 0; ts < 8; ts++) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 231 | tbf->pdch[ts] = NULL; |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 232 | } |
| 233 | } |
| 234 | |
| 235 | void tbf_free(struct gprs_rlcmac_tbf *tbf) |
| 236 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 237 | /* Give final measurement report */ |
| 238 | gprs_rlcmac_rssi_rep(tbf); |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 239 | if (tbf->direction == GPRS_RLCMAC_DL_TBF) { |
| 240 | gprs_rlcmac_dl_tbf *dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(tbf); |
| 241 | gprs_rlcmac_lost_rep(dl_tbf); |
Jacob Erlbeck | d0261b7 | 2015-04-02 13:58:09 +0200 | [diff] [blame] | 242 | dl_tbf->cleanup(); |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 243 | } |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 244 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 245 | LOGP(DRLCMAC, LOGL_INFO, "%s free\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 246 | if (tbf->ul_ass_state != GPRS_RLCMAC_UL_ASS_NONE) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 247 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: Pending uplink " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 248 | "assignment. This may not happen, because the " |
| 249 | "assignment message never gets transmitted. Please " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 250 | "be sure not to free in this state. PLEASE FIX!\n", |
| 251 | tbf_name(tbf)); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 252 | if (tbf->dl_ass_state != GPRS_RLCMAC_DL_ASS_NONE) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 253 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: Pending downlink " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 254 | "assignment. This may not happen, because the " |
| 255 | "assignment message never gets transmitted. Please " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 256 | "be sure not to free in this state. PLEASE FIX!\n", |
| 257 | tbf_name(tbf)); |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 258 | tbf->stop_timer(); |
Holger Hans Peter Freyther | 782f6dd | 2013-10-26 18:31:51 +0200 | [diff] [blame] | 259 | #warning "TODO: Could/Should generate bssgp_tx_llc_discarded" |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 260 | tbf_unlink_pdch(tbf); |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 261 | llist_del(&tbf->list.list); |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 262 | |
| 263 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 264 | tbf->bts->tbf_ul_freed(); |
| 265 | else |
| 266 | tbf->bts->tbf_dl_freed(); |
| 267 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 268 | if (tbf->ms()) |
| 269 | tbf->set_ms(NULL); |
| 270 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 271 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF ends here **********\n"); |
| 272 | talloc_free(tbf); |
| 273 | } |
| 274 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 275 | int gprs_rlcmac_tbf::update() |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 276 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 277 | struct gprs_rlcmac_tbf *ul_tbf = NULL; |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 278 | struct gprs_rlcmac_bts *bts_data = bts->bts_data(); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 279 | int rc; |
| 280 | |
| 281 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF update **********\n"); |
| 282 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 283 | if (direction != GPRS_RLCMAC_DL_TBF) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 284 | return -EINVAL; |
| 285 | |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 286 | if (ms()) |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 287 | ul_tbf = ms()->ul_tbf(); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 288 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 289 | tbf_unlink_pdch(this); |
| 290 | rc = bts_data->alloc_algorithm(bts_data, ul_tbf, this, bts_data->alloc_algorithm_curst, 0); |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 291 | /* if no resource */ |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 292 | if (rc < 0) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 293 | LOGP(DRLCMAC, LOGL_ERROR, "No resource after update???\n"); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 294 | return -rc; |
| 295 | } |
| 296 | |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf) |
| 301 | { |
| 302 | if (tbf->control_ts == 0xff) |
| 303 | LOGP(DRLCMAC, LOGL_INFO, "- Setting Control TS %d\n", |
| 304 | tbf->first_common_ts); |
| 305 | else if (tbf->control_ts != tbf->first_common_ts) |
| 306 | LOGP(DRLCMAC, LOGL_INFO, "- Changing Control TS %d\n", |
| 307 | tbf->first_common_ts); |
| 308 | tbf->control_ts = tbf->first_common_ts; |
| 309 | |
| 310 | return 0; |
| 311 | } |
| 312 | |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 313 | const char *gprs_rlcmac_tbf::tbf_state_name[] = { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 314 | "NULL", |
| 315 | "ASSIGN", |
| 316 | "FLOW", |
| 317 | "FINISHED", |
| 318 | "WAIT RELEASE", |
| 319 | "RELEASING", |
| 320 | }; |
| 321 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 322 | void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T, |
| 323 | unsigned int seconds, unsigned int microseconds) |
| 324 | { |
| 325 | if (!osmo_timer_pending(&tbf->timer)) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 326 | LOGP(DRLCMAC, LOGL_DEBUG, "%s starting timer %u.\n", |
| 327 | tbf_name(tbf), T); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 328 | else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 329 | LOGP(DRLCMAC, LOGL_DEBUG, "%s restarting timer %u " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 330 | "while old timer %u pending \n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 331 | tbf_name(tbf), T, tbf->T); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 332 | |
| 333 | tbf->T = T; |
| 334 | tbf->num_T_exp = 0; |
| 335 | |
| 336 | /* Tunning timers can be safely re-scheduled. */ |
| 337 | tbf->timer.data = tbf; |
| 338 | tbf->timer.cb = &tbf_timer_cb; |
| 339 | |
| 340 | osmo_timer_schedule(&tbf->timer, seconds, microseconds); |
| 341 | } |
| 342 | |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 343 | void gprs_rlcmac_tbf::stop_t3191() |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 344 | { |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 345 | return stop_timer(); |
| 346 | } |
| 347 | |
| 348 | void gprs_rlcmac_tbf::stop_timer() |
| 349 | { |
| 350 | if (osmo_timer_pending(&timer)) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 351 | LOGP(DRLCMAC, LOGL_DEBUG, "%s stopping timer %u.\n", |
| 352 | tbf_name(this), T); |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 353 | osmo_timer_del(&timer); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 354 | } |
| 355 | } |
| 356 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 357 | void gprs_rlcmac_tbf::poll_timeout() |
| 358 | { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 359 | LOGP(DRLCMAC, LOGL_NOTICE, "%s poll timeout\n", |
| 360 | tbf_name(this)); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 361 | |
| 362 | poll_state = GPRS_RLCMAC_POLL_NONE; |
| 363 | |
| 364 | if (ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) { |
| 365 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) { |
| 366 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 367 | "PACKET CONTROL ACK for PACKET UPLINK ACK\n"); |
| 368 | rlcmac_diag(); |
| 369 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK); |
| 370 | } |
| 371 | ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 372 | if (state_is(GPRS_RLCMAC_FINISHED)) { |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 373 | 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] | 374 | ul_tbf->m_n3103++; |
| 375 | 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] | 376 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 377 | "- N3103 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 378 | ul_tbf->set_state(GPRS_RLCMAC_RELEASING); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 379 | 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] | 380 | return; |
| 381 | } |
| 382 | /* reschedule UL ack */ |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 383 | 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] | 384 | } |
| 385 | } else if (ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) { |
| 386 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) { |
| 387 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 388 | "PACKET CONTROL ACK for PACKET UPLINK " |
| 389 | "ASSIGNMENT.\n"); |
| 390 | rlcmac_diag(); |
| 391 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS); |
| 392 | } |
| 393 | ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 394 | n3105++; |
| 395 | if (n3105 == bts_data()->n3105) { |
| 396 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 397 | set_state(GPRS_RLCMAC_RELEASING); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 398 | tbf_timer_start(this, 3195, bts_data()->t3195, 0); |
| 399 | return; |
| 400 | } |
| 401 | /* reschedule UL assignment */ |
| 402 | ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 403 | } else if (dl_ass_state == GPRS_RLCMAC_DL_ASS_WAIT_ACK) { |
| 404 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) { |
| 405 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 406 | "PACKET CONTROL ACK for PACKET DOWNLINK " |
| 407 | "ASSIGNMENT.\n"); |
| 408 | rlcmac_diag(); |
| 409 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS); |
| 410 | } |
| 411 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 412 | n3105++; |
| 413 | if (n3105 == bts->bts_data()->n3105) { |
| 414 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 415 | set_state(GPRS_RLCMAC_RELEASING); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 416 | tbf_timer_start(this, 3195, bts_data()->t3195, 0); |
| 417 | return; |
| 418 | } |
| 419 | /* reschedule DL assignment */ |
| 420 | dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; |
| 421 | } else if (direction == GPRS_RLCMAC_DL_TBF) { |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 422 | gprs_rlcmac_dl_tbf *dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(this); |
| 423 | |
| 424 | 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] | 425 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 426 | "PACKET DOWNLINK ACK.\n"); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 427 | dl_tbf->rlcmac_diag(); |
| 428 | 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] | 429 | } |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 430 | dl_tbf->n3105++; |
| 431 | if (dl_tbf->n3105 == dl_tbf->bts->bts_data()->n3105) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 432 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 433 | dl_tbf->set_state(GPRS_RLCMAC_RELEASING); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 434 | 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] | 435 | return; |
| 436 | } |
| 437 | /* resend IMM.ASS on CCCH on timeout */ |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 438 | if ((dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH)) |
| 439 | && !(dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 440 | LOGP(DRLCMAC, LOGL_DEBUG, "Re-send dowlink assignment " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 441 | "for %s on PCH (IMSI=%s)\n", |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 442 | tbf_name(dl_tbf), |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 443 | imsi()); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 444 | /* send immediate assignment */ |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 445 | dl_tbf->bts->snd_dl_ass(dl_tbf, 0, imsi()); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 446 | dl_tbf->m_wait_confirm = 1; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 447 | } |
| 448 | } else |
| 449 | LOGP(DRLCMAC, LOGL_ERROR, "- Poll Timeout, but no event!\n"); |
| 450 | } |
| 451 | |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 452 | static int setup_tbf(struct gprs_rlcmac_tbf *tbf, struct gprs_rlcmac_bts *bts, |
| 453 | struct gprs_rlcmac_tbf *old_tbf, uint8_t tfi, uint8_t trx, |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 454 | uint8_t ms_class, uint8_t single_slot) |
| 455 | { |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 456 | int rc; |
| 457 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 458 | if (trx >= 8 || tfi >= 32) |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 459 | return -1; |
Daniel Willmann | 078bb71 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 460 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 461 | if (!tbf) |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 462 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 463 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 464 | /* Back pointer for PODS llist compatibility */ |
| 465 | tbf->list.back = tbf; |
| 466 | |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 467 | tbf->m_created_ts = time(NULL); |
Holger Hans Peter Freyther | 9f0c1d2 | 2013-10-19 21:24:34 +0200 | [diff] [blame] | 468 | tbf->bts = bts->bts; |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 469 | tbf->m_tfi = tfi; |
Holger Hans Peter Freyther | 743bafa | 2013-09-29 07:50:50 +0200 | [diff] [blame] | 470 | tbf->trx = &bts->trx[trx]; |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 471 | tbf->set_ms_class(ms_class); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 472 | /* select algorithm */ |
| 473 | rc = bts->alloc_algorithm(bts, old_tbf, tbf, bts->alloc_algorithm_curst, |
| 474 | single_slot); |
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 | /* assign control ts */ |
| 480 | tbf->control_ts = 0xff; |
| 481 | rc = tbf_assign_control_ts(tbf); |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 482 | /* if no resource */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 483 | if (rc < 0) { |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 484 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 485 | } |
| 486 | |
| 487 | /* set timestamp */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 488 | gettimeofday(&tbf->meas.rssi_tv, NULL); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 489 | |
Holger Hans Peter Freyther | 758dc12 | 2013-11-06 20:39:45 +0100 | [diff] [blame] | 490 | tbf->m_llc.init(); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | |
| 495 | struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, |
| 496 | struct gprs_rlcmac_tbf *old_tbf, uint8_t tfi, uint8_t trx, |
| 497 | uint8_t ms_class, uint8_t single_slot) |
| 498 | { |
| 499 | struct gprs_rlcmac_ul_tbf *tbf; |
| 500 | int rc; |
| 501 | |
| 502 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
| 503 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 504 | "MS_CLASS=%d\n", "UL", tfi, trx, ms_class); |
| 505 | |
| 506 | if (trx >= 8 || tfi >= 32) |
| 507 | return NULL; |
| 508 | |
| 509 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_ul_tbf); |
| 510 | |
| 511 | if (!tbf) |
| 512 | return NULL; |
| 513 | |
| 514 | tbf->direction = GPRS_RLCMAC_UL_TBF; |
| 515 | rc = setup_tbf(tbf, bts, old_tbf, tfi, trx, ms_class, single_slot); |
| 516 | /* if no resource */ |
| 517 | if (rc < 0) { |
| 518 | talloc_free(tbf); |
| 519 | return NULL; |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 520 | } |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 521 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 522 | llist_add(&tbf->list.list, &bts->ul_tbfs); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 523 | tbf->bts->tbf_ul_created(); |
| 524 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 525 | if (old_tbf && old_tbf->ms()) |
| 526 | tbf->set_ms(old_tbf->ms()); |
| 527 | |
| 528 | if (tbf->ms()) |
| 529 | tbf->ms()->attach_ul_tbf(tbf); |
| 530 | |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 531 | return tbf; |
| 532 | } |
| 533 | |
| 534 | struct gprs_rlcmac_dl_tbf *tbf_alloc_dl_tbf(struct gprs_rlcmac_bts *bts, |
| 535 | struct gprs_rlcmac_tbf *old_tbf, uint8_t tfi, uint8_t trx, |
| 536 | uint8_t ms_class, uint8_t single_slot) |
| 537 | { |
| 538 | struct gprs_rlcmac_dl_tbf *tbf; |
| 539 | int rc; |
| 540 | |
| 541 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
| 542 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 543 | "MS_CLASS=%d\n", "DL", tfi, trx, ms_class); |
| 544 | |
| 545 | if (trx >= 8 || tfi >= 32) |
| 546 | return NULL; |
| 547 | |
| 548 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_dl_tbf); |
| 549 | |
| 550 | if (!tbf) |
| 551 | return NULL; |
| 552 | |
| 553 | tbf->direction = GPRS_RLCMAC_DL_TBF; |
| 554 | rc = setup_tbf(tbf, bts, old_tbf, tfi, trx, ms_class, single_slot); |
| 555 | /* if no resource */ |
| 556 | if (rc < 0) { |
| 557 | talloc_free(tbf); |
| 558 | return NULL; |
| 559 | } |
| 560 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 561 | llist_add(&tbf->list.list, &bts->dl_tbfs); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 562 | tbf->bts->tbf_dl_created(); |
| 563 | |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 564 | tbf->m_last_dl_poll_fn = -1; |
Jacob Erlbeck | 3bed5d1 | 2015-03-19 11:22:38 +0100 | [diff] [blame] | 565 | tbf->m_last_dl_drained_fn = -1; |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 566 | |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 567 | gettimeofday(&tbf->m_bw.dl_bw_tv, NULL); |
| 568 | gettimeofday(&tbf->m_bw.dl_loss_tv, NULL); |
| 569 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 570 | if (old_tbf && old_tbf->ms()) |
| 571 | tbf->set_ms(old_tbf->ms()); |
| 572 | |
| 573 | if (tbf->ms()) |
| 574 | tbf->ms()->attach_dl_tbf(tbf); |
| 575 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 576 | return tbf; |
| 577 | } |
| 578 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 579 | static void tbf_timer_cb(void *_tbf) |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 580 | { |
| 581 | struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 582 | tbf->handle_timeout(); |
| 583 | } |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 584 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 585 | void gprs_rlcmac_tbf::handle_timeout() |
| 586 | { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 587 | LOGP(DRLCMAC, LOGL_DEBUG, "%s timer %u expired.\n", |
| 588 | tbf_name(this), T); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 589 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 590 | num_T_exp++; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 591 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 592 | switch (T) { |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 593 | case 0: /* assignment */ |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 594 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) { |
| 595 | if (state_is(GPRS_RLCMAC_ASSIGN)) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 596 | LOGP(DRLCMAC, LOGL_NOTICE, "%s releasing due to " |
| 597 | "PACCH assignment timeout.\n", tbf_name(this)); |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 598 | tbf_free(this); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 599 | return; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 600 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 601 | LOGP(DRLCMAC, LOGL_ERROR, "Error: %s is not " |
| 602 | "in assign state\n", tbf_name(this)); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 603 | } |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 604 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) { |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 605 | 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] | 606 | dl_tbf->m_wait_confirm = 0; |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 607 | if (dl_tbf->state_is(GPRS_RLCMAC_ASSIGN)) { |
| 608 | tbf_assign_control_ts(dl_tbf); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 609 | |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 610 | if (!dl_tbf->upgrade_to_multislot) { |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 611 | /* change state to FLOW, so scheduler |
| 612 | * will start transmission */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 613 | dl_tbf->set_state(GPRS_RLCMAC_FLOW); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 614 | break; |
| 615 | } |
| 616 | |
| 617 | /* This tbf can be upgraded to use multiple DL |
| 618 | * timeslots and now that there is already one |
| 619 | * slot assigned send another DL assignment via |
| 620 | * PDCH. */ |
| 621 | |
| 622 | /* keep to flags */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 623 | dl_tbf->state_flags &= GPRS_RLCMAC_FLAG_TO_MASK; |
| 624 | dl_tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 625 | |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 626 | dl_tbf->update(); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 627 | |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 628 | dl_tbf->bts->trigger_dl_ass(dl_tbf, dl_tbf); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 629 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 630 | LOGP(DRLCMAC, LOGL_NOTICE, "%s Continue flow after " |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 631 | "IMM.ASS confirm\n", tbf_name(dl_tbf)); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 632 | } |
| 633 | break; |
| 634 | case 3169: |
| 635 | case 3191: |
| 636 | case 3195: |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 637 | LOGP(DRLCMAC, LOGL_NOTICE, "%s T%d timeout during " |
| 638 | "transsmission\n", tbf_name(this), T); |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 639 | rlcmac_diag(); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 640 | /* fall through */ |
| 641 | case 3193: |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 642 | LOGP(DRLCMAC, LOGL_DEBUG, |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 643 | "%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] | 644 | /* free TBF */ |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 645 | tbf_free(this); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 646 | return; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 647 | break; |
| 648 | default: |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 649 | LOGP(DRLCMAC, LOGL_ERROR, |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 650 | "%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] | 651 | } |
| 652 | } |
| 653 | |
| 654 | int gprs_rlcmac_tbf::rlcmac_diag() |
| 655 | { |
| 656 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) |
| 657 | LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on CCCH\n"); |
| 658 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) |
| 659 | LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on PACCH\n"); |
| 660 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_UL_DATA))) |
| 661 | LOGP(DRLCMAC, LOGL_NOTICE, "- Uplink data was received\n"); |
| 662 | else if (direction == GPRS_RLCMAC_UL_TBF) |
| 663 | LOGP(DRLCMAC, LOGL_NOTICE, "- No uplink data received yet\n"); |
| 664 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) |
| 665 | LOGP(DRLCMAC, LOGL_NOTICE, "- Downlink ACK was received\n"); |
| 666 | else if (direction == GPRS_RLCMAC_DL_TBF) |
| 667 | LOGP(DRLCMAC, LOGL_NOTICE, "- No downlink ACK received yet\n"); |
| 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 672 | struct msgb *gprs_rlcmac_tbf::create_dl_ass(uint32_t fn) |
| 673 | { |
| 674 | struct msgb *msg; |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 675 | struct gprs_rlcmac_dl_tbf *new_dl_tbf = NULL; |
Holger Hans Peter Freyther | 9977e15 | 2013-11-24 22:52:10 +0100 | [diff] [blame] | 676 | int poll_ass_dl = 1; |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 677 | |
Holger Hans Peter Freyther | 9977e15 | 2013-11-24 22:52:10 +0100 | [diff] [blame] | 678 | 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] | 679 | LOGP(DRLCMAC, LOGL_NOTICE, "Cannot poll for downlink " |
| 680 | "assigment, because MS cannot reply. (control TS=%d, " |
| 681 | "first common TS=%d)\n", control_ts, |
| 682 | first_common_ts); |
| 683 | poll_ass_dl = 0; |
| 684 | } |
| 685 | if (poll_ass_dl) { |
| 686 | if (poll_state != GPRS_RLCMAC_POLL_NONE) { |
| 687 | LOGP(DRLCMAC, LOGL_DEBUG, "Polling is already sheduled " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 688 | "for %s, so we must wait for downlink " |
| 689 | "assignment...\n", tbf_name(this)); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 690 | return NULL; |
| 691 | } |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 692 | 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] | 693 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already " |
| 694 | "scheduled for single block allocation...\n"); |
| 695 | return NULL; |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | /* on uplink TBF we get the downlink TBF to be assigned. */ |
| 700 | if (direction == GPRS_RLCMAC_UL_TBF) { |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 701 | gprs_rlcmac_ul_tbf *ul_tbf = static_cast<gprs_rlcmac_ul_tbf *>(this); |
| 702 | |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 703 | /* be sure to check first, if contention resolution is done, |
| 704 | * otherwise we cannot send the assignment yet */ |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 705 | if (!ul_tbf->m_contention_resolution_done) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 706 | LOGP(DRLCMAC, LOGL_DEBUG, "Cannot assign DL TBF now, " |
| 707 | "because contention resolution is not " |
| 708 | "finished.\n"); |
| 709 | return NULL; |
| 710 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 711 | } |
| 712 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 713 | if (ms()) |
| 714 | new_dl_tbf = ms()->dl_tbf(); |
| 715 | |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 716 | if (!new_dl_tbf) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 717 | LOGP(DRLCMACDL, LOGL_ERROR, "We have a schedule for downlink " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 718 | "assignment at uplink %s, but there is no downlink " |
| 719 | "TBF\n", tbf_name(this)); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 720 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
| 721 | return NULL; |
| 722 | } |
| 723 | |
Holger Hans Peter Freyther | f5c9747 | 2014-12-26 18:32:00 +0100 | [diff] [blame] | 724 | new_dl_tbf->was_releasing = was_releasing; |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 725 | msg = msgb_alloc(23, "rlcmac_dl_ass"); |
| 726 | if (!msg) |
| 727 | return NULL; |
| 728 | bitvec *ass_vec = bitvec_alloc(23); |
| 729 | if (!ass_vec) { |
| 730 | msgb_free(msg); |
| 731 | return NULL; |
| 732 | } |
| 733 | bitvec_unhex(ass_vec, |
| 734 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 735 | 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] | 736 | 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] | 737 | Encoding::write_packet_downlink_assignment(mac_control_block, m_tfi, |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 738 | (direction == GPRS_RLCMAC_DL_TBF), new_dl_tbf, |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 739 | poll_ass_dl, bts_data()->alpha, bts_data()->gamma, -1, 0); |
| 740 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++\n"); |
| 741 | encode_gsm_rlcmac_downlink(ass_vec, mac_control_block); |
| 742 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 743 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Downlink Assignment -------------------------\n"); |
| 744 | bitvec_pack(ass_vec, msgb_put(msg, 23)); |
| 745 | bitvec_free(ass_vec); |
| 746 | talloc_free(mac_control_block); |
| 747 | |
| 748 | if (poll_ass_dl) { |
| 749 | poll_state = GPRS_RLCMAC_POLL_SCHED; |
| 750 | poll_fn = (fn + 13) % 2715648; |
| 751 | dl_ass_state = GPRS_RLCMAC_DL_ASS_WAIT_ACK; |
| 752 | } else { |
| 753 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 754 | new_dl_tbf->set_state(GPRS_RLCMAC_FLOW); |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 755 | tbf_assign_control_ts(new_dl_tbf); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 756 | /* stop pending assignment timer */ |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 757 | new_dl_tbf->stop_timer(); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 758 | |
| 759 | } |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 760 | |
| 761 | return msg; |
| 762 | } |
| 763 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 764 | struct msgb *gprs_rlcmac_tbf::create_ul_ass(uint32_t fn) |
| 765 | { |
| 766 | struct msgb *msg; |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 767 | struct gprs_rlcmac_ul_tbf *new_tbf = NULL; |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 768 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 769 | if (poll_state != GPRS_RLCMAC_POLL_NONE) { |
| 770 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 771 | "sheduled for %s, so we must wait for uplink " |
| 772 | "assignment...\n", tbf_name(this)); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 773 | return NULL; |
| 774 | } |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 775 | 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] | 776 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already scheduled for " |
| 777 | "single block allocation...\n"); |
| 778 | return NULL; |
| 779 | } |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 780 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 781 | if (ms()) |
| 782 | new_tbf = ms()->ul_tbf(); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 783 | if (!new_tbf) { |
| 784 | LOGP(DRLCMACUL, LOGL_ERROR, "We have a schedule for uplink " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 785 | "assignment at downlink %s, but there is no uplink " |
| 786 | "TBF\n", tbf_name(this)); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 787 | ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
| 788 | return NULL; |
| 789 | } |
| 790 | |
| 791 | msg = msgb_alloc(23, "rlcmac_ul_ass"); |
| 792 | if (!msg) |
| 793 | return NULL; |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 794 | 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] | 795 | bitvec *ass_vec = bitvec_alloc(23); |
| 796 | if (!ass_vec) { |
| 797 | msgb_free(msg); |
| 798 | return NULL; |
| 799 | } |
| 800 | bitvec_unhex(ass_vec, |
| 801 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 802 | Encoding::write_packet_uplink_assignment(bts_data(), ass_vec, m_tfi, |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 803 | (direction == GPRS_RLCMAC_DL_TBF), tlli(), |
| 804 | is_tlli_valid(), new_tbf, 1, bts_data()->alpha, |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 805 | bts_data()->gamma, -1); |
| 806 | bitvec_pack(ass_vec, msgb_put(msg, 23)); |
| 807 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| 808 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Uplink Assignment +++++++++++++++++++++++++\n"); |
| 809 | decode_gsm_rlcmac_downlink(ass_vec, mac_control_block); |
| 810 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 811 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Uplink Assignment -------------------------\n"); |
| 812 | bitvec_free(ass_vec); |
| 813 | talloc_free(mac_control_block); |
| 814 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 815 | poll_state = GPRS_RLCMAC_POLL_SCHED; |
| 816 | poll_fn = (fn + 13) % 2715648; |
| 817 | ul_ass_state = GPRS_RLCMAC_UL_ASS_WAIT_ACK; |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 818 | |
| 819 | return msg; |
| 820 | } |
| 821 | |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 822 | void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_trx *trx) |
| 823 | { |
| 824 | for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| 825 | struct gprs_rlcmac_tbf *tbf; |
| 826 | |
| 827 | tbf = trx->ul_tbf[tfi]; |
| 828 | if (tbf) |
| 829 | tbf_free(tbf); |
| 830 | tbf = trx->dl_tbf[tfi]; |
| 831 | if (tbf) |
| 832 | tbf_free(tbf); |
| 833 | } |
| 834 | } |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 835 | |
| 836 | void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_pdch *pdch) |
| 837 | { |
| 838 | for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| 839 | struct gprs_rlcmac_tbf *tbf; |
| 840 | |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 841 | tbf = pdch->ul_tbf_by_tfi(tfi); |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 842 | if (tbf) |
| 843 | tbf_free(tbf); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 844 | tbf = pdch->dl_tbf_by_tfi(tfi); |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 845 | if (tbf) |
| 846 | tbf_free(tbf); |
| 847 | } |
| 848 | } |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 849 | |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 850 | void gprs_rlcmac_tbf::update_tlli(uint32_t tlli) |
| 851 | { |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 852 | } |
| 853 | |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 854 | int gprs_rlcmac_tbf::extract_tlli(const uint8_t *data, const size_t len) |
| 855 | { |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 856 | struct gprs_rlcmac_tbf *dl_tbf = NULL; |
| 857 | struct gprs_rlcmac_tbf *ul_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 858 | struct rlc_ul_header *rh = (struct rlc_ul_header *)data; |
| 859 | uint32_t new_tlli; |
| 860 | int rc; |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 861 | GprsMs *old_ms; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 862 | |
| 863 | /* no TLLI yet */ |
| 864 | if (!rh->ti) { |
| 865 | LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA TFI=%d without " |
| 866 | "TLLI, but no TLLI received yet\n", rh->tfi); |
| 867 | return 0; |
| 868 | } |
| 869 | rc = Decoding::tlli_from_ul_data(data, len, &new_tlli); |
| 870 | if (rc) { |
| 871 | bts->decode_error(); |
| 872 | LOGP(DRLCMACUL, LOGL_NOTICE, "Failed to decode TLLI " |
| 873 | "of UL DATA TFI=%d.\n", rh->tfi); |
| 874 | return 0; |
| 875 | } |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 876 | |
| 877 | old_ms = bts->ms_by_tlli(new_tlli); |
| 878 | if (old_ms) { |
| 879 | /* Get them before calling set_ms() */ |
| 880 | dl_tbf = old_ms->dl_tbf(); |
| 881 | ul_tbf = old_ms->ul_tbf(); |
| 882 | |
| 883 | set_ms(old_ms); |
| 884 | } |
| 885 | |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 886 | update_tlli(new_tlli); |
Jacob Erlbeck | be0cbc1 | 2015-05-18 14:35:11 +0200 | [diff] [blame] | 887 | /* The TLLI has been taken from an UL message */ |
| 888 | update_ms(new_tlli, GPRS_RLCMAC_UL_TBF); |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 889 | LOGP(DRLCMACUL, LOGL_INFO, "Decoded premier TLLI=0x%08x of " |
| 890 | "UL DATA TFI=%d.\n", tlli(), rh->tfi); |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 891 | if (dl_tbf) { |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 892 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
| 893 | "TLLI=0x%08x while %s still exists. " |
| 894 | "Killing pending DL TBF\n", tlli(), |
| 895 | tbf_name(dl_tbf)); |
| 896 | tbf_free(dl_tbf); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 897 | dl_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 898 | } |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 899 | if (ul_tbf) { |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 900 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
| 901 | "TLLI=0x%08x while %s still exists. " |
| 902 | "Killing pending UL TBF\n", tlli(), |
| 903 | tbf_name(ul_tbf)); |
| 904 | tbf_free(ul_tbf); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 905 | ul_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 906 | } |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 907 | return 1; |
| 908 | } |
| 909 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 910 | const char *tbf_name(gprs_rlcmac_tbf *tbf) |
| 911 | { |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 912 | return tbf->name(); |
| 913 | } |
| 914 | |
| 915 | const char *gprs_rlcmac_tbf::name() const |
| 916 | { |
Jacob Erlbeck | 7bf9f49 | 2015-06-11 12:45:47 +0200 | [diff] [blame] | 917 | if (this == NULL) |
| 918 | return "(no TBF)"; |
| 919 | |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 920 | snprintf(m_name_buf, sizeof(m_name_buf) - 1, |
| 921 | "TBF(TFI=%d TLLI=0x%08x DIR=%s STATE=%s)", |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 922 | m_tfi, tlli(), |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 923 | direction == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| 924 | state_name() |
| 925 | ); |
| 926 | m_name_buf[sizeof(m_name_buf) - 1] = '\0'; |
| 927 | return m_name_buf; |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 928 | } |
Holger Hans Peter Freyther | 758dc12 | 2013-11-06 20:39:45 +0100 | [diff] [blame] | 929 | |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 930 | void gprs_rlcmac_tbf::rotate_in_list() |
| 931 | { |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 932 | llist_del(&list.list); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 933 | if (direction == GPRS_RLCMAC_UL_TBF) |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 934 | llist_add(&list.list, &bts->bts_data()->ul_tbfs); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 935 | else |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 936 | llist_add(&list.list, &bts->bts_data()->dl_tbfs); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 937 | } |
Holger Hans Peter Freyther | 8f399de | 2013-12-25 20:22:35 +0100 | [diff] [blame] | 938 | |
| 939 | uint8_t gprs_rlcmac_tbf::tsc() const |
| 940 | { |
| 941 | return trx->pdch[first_ts].tsc; |
| 942 | } |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 943 | |
Jacob Erlbeck | c0c580c | 2015-04-30 15:59:01 +0200 | [diff] [blame] | 944 | void tbf_print_vty_info(struct vty *vty, struct llist_head *ltbf) |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 945 | { |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 946 | gprs_rlcmac_tbf *tbf = llist_pods_entry(ltbf, gprs_rlcmac_tbf); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 947 | |
Daniel Willmann | 772415f | 2014-01-15 17:06:51 +0100 | [diff] [blame] | 948 | 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] | 949 | tbf->tlli(), tbf->is_tlli_valid() ? "valid" : "invalid", |
| 950 | tbf->direction == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| 951 | tbf->imsi(), VTY_NEWLINE); |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 952 | 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] | 953 | "MS_CLASS=%d%s", |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 954 | tbf->created_ts(), tbf->state_flags, tbf->first_ts, |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 955 | tbf->first_common_ts, tbf->control_ts, tbf->ms_class(), |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 956 | VTY_NEWLINE); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 957 | vty_out(vty, " TS_alloc="); |
| 958 | for (int i = 0; i < 8; i++) { |
| 959 | if (tbf->pdch[i]) |
| 960 | vty_out(vty, "%d ", i); |
| 961 | } |
Jacob Erlbeck | a700dd9 | 2015-06-02 16:00:41 +0200 | [diff] [blame] | 962 | vty_out(vty, " CS=%d%s%s", tbf->ms() ? tbf->ms()->current_cs_dl() : 1, |
| 963 | VTY_NEWLINE, VTY_NEWLINE); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 964 | } |