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 | |
Holger Hans Peter Freyther | 5464c9b | 2013-10-27 20:57:35 +0100 | [diff] [blame] | 49 | void gprs_rlcmac_tbf::assign_imsi(const char *imsi) |
Holger Hans Peter Freyther | d868928 | 2013-08-24 20:51:06 +0200 | [diff] [blame] | 50 | { |
Holger Hans Peter Freyther | 5464c9b | 2013-10-27 20:57:35 +0100 | [diff] [blame] | 51 | strncpy(m_imsi, imsi, sizeof(m_imsi)); |
| 52 | m_imsi[sizeof(m_imsi) - 1] = '\0'; |
Holger Hans Peter Freyther | d868928 | 2013-08-24 20:51:06 +0200 | [diff] [blame] | 53 | } |
| 54 | |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 55 | void gprs_rlcmac_tbf::set_new_tbf(gprs_rlcmac_tbf *tbf) |
| 56 | { |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 57 | if (m_new_tbf) { |
| 58 | if (m_new_tbf == tbf) { |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 59 | LOGP(DRLCMAC, LOGL_INFO, |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 60 | "%s reassigning %s to m_new_tbf\n", |
| 61 | tbf_name(this), tbf_name(tbf)); |
| 62 | return; |
| 63 | } |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 64 | if (m_new_tbf != this) { |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 65 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 66 | "%s m_new_tbf is already assigned to %s, " |
| 67 | "overwriting the old value with %s\n", |
| 68 | tbf_name(this), tbf_name(m_new_tbf), tbf_name(tbf)); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 69 | } |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 70 | /* Detach from other TBF */ |
| 71 | m_new_tbf->m_old_tbf = NULL; |
| 72 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 73 | m_new_tbf = tbf; |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 74 | tbf->m_old_tbf = this; |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 75 | |
| 76 | if (!tbf->ms()) |
| 77 | tbf->set_ms(ms()); |
| 78 | } |
| 79 | |
| 80 | void gprs_rlcmac_tbf::set_ms(GprsMs *ms) |
| 81 | { |
| 82 | if (m_ms == ms) |
| 83 | return; |
| 84 | |
| 85 | if (m_ms) |
| 86 | m_ms->detach_tbf(this); |
| 87 | |
| 88 | m_ms = ms; |
| 89 | |
| 90 | if (m_ms) |
| 91 | m_ms->attach_tbf(this); |
| 92 | } |
| 93 | |
| 94 | void gprs_rlcmac_tbf::update_ms(uint32_t tlli) |
| 95 | { |
| 96 | if (!ms()) |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame^] | 97 | set_ms(bts->ms_store().get_or_create_ms(tlli)); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 98 | else |
| 99 | ms()->set_tlli(tlli); |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 100 | } |
| 101 | |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 102 | 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] | 103 | int8_t use_trx, uint8_t ms_class, |
| 104 | uint32_t tlli, uint8_t ta, struct gprs_rlcmac_tbf *dl_tbf) |
| 105 | { |
| 106 | uint8_t trx; |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 107 | struct gprs_rlcmac_ul_tbf *tbf; |
Holger Hans Peter Freyther | 5697b4c | 2013-11-11 16:22:39 +0100 | [diff] [blame] | 108 | int8_t tfi; /* must be signed */ |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 109 | |
| 110 | #warning "Copy and paste with tbf_new_dl_assignment" |
Holger Hans Peter Freyther | ba26368 | 2013-12-25 19:15:57 +0100 | [diff] [blame] | 111 | /* create new TBF, use same TRX as DL TBF */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 112 | 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] | 113 | if (tfi < 0) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 114 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 115 | /* FIXME: send reject */ |
| 116 | return NULL; |
| 117 | } |
| 118 | /* use multislot class of downlink TBF */ |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 119 | 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] | 120 | if (!tbf) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 121 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 122 | /* FIXME: send reject */ |
| 123 | return NULL; |
| 124 | } |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 125 | tbf->m_tlli = tlli; |
| 126 | tbf->m_tlli_valid = 1; /* no contention resolution */ |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 127 | tbf->m_contention_resolution_done = 1; |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 128 | tbf->ta = ta; /* use current TA */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 129 | tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 130 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
| 131 | tbf_timer_start(tbf, 3169, bts->t3169, 0); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 132 | tbf->update_ms(tlli); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 133 | |
| 134 | return tbf; |
| 135 | } |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 136 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 137 | static void tbf_unlink_pdch(struct gprs_rlcmac_tbf *tbf) |
| 138 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 139 | int ts; |
| 140 | |
| 141 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 142 | tbf->trx->ul_tbf[tbf->tfi()] = NULL; |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 143 | for (ts = 0; ts < 8; ts++) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 144 | tbf->pdch[ts] = NULL; |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 145 | } else { |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 146 | tbf->trx->dl_tbf[tbf->tfi()] = NULL; |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 147 | for (ts = 0; ts < 8; ts++) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 148 | tbf->pdch[ts] = NULL; |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 149 | } |
| 150 | } |
| 151 | |
| 152 | void tbf_free(struct gprs_rlcmac_tbf *tbf) |
| 153 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 154 | /* Give final measurement report */ |
| 155 | gprs_rlcmac_rssi_rep(tbf); |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 156 | if (tbf->direction == GPRS_RLCMAC_DL_TBF) { |
| 157 | gprs_rlcmac_dl_tbf *dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(tbf); |
| 158 | gprs_rlcmac_lost_rep(dl_tbf); |
Jacob Erlbeck | d0261b7 | 2015-04-02 13:58:09 +0200 | [diff] [blame] | 159 | dl_tbf->cleanup(); |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 160 | } |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 161 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 162 | LOGP(DRLCMAC, LOGL_INFO, "%s free\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 163 | if (tbf->ul_ass_state != GPRS_RLCMAC_UL_ASS_NONE) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 164 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: Pending uplink " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 165 | "assignment. This may not happen, because the " |
| 166 | "assignment message never gets transmitted. Please " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 167 | "be sure not to free in this state. PLEASE FIX!\n", |
| 168 | tbf_name(tbf)); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 169 | if (tbf->dl_ass_state != GPRS_RLCMAC_DL_ASS_NONE) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 170 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: Pending downlink " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 171 | "assignment. This may not happen, because the " |
| 172 | "assignment message never gets transmitted. Please " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 173 | "be sure not to free in this state. PLEASE FIX!\n", |
| 174 | tbf_name(tbf)); |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 175 | tbf->stop_timer(); |
Holger Hans Peter Freyther | 782f6dd | 2013-10-26 18:31:51 +0200 | [diff] [blame] | 176 | #warning "TODO: Could/Should generate bssgp_tx_llc_discarded" |
Holger Hans Peter Freyther | 758dc12 | 2013-11-06 20:39:45 +0100 | [diff] [blame] | 177 | tbf->m_llc.clear(tbf->bts); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 178 | tbf_unlink_pdch(tbf); |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 179 | llist_del(&tbf->list.list); |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 180 | |
| 181 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 182 | tbf->bts->tbf_ul_freed(); |
| 183 | else |
| 184 | tbf->bts->tbf_dl_freed(); |
| 185 | |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 186 | if (tbf->m_old_tbf) { |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 187 | if (tbf->m_old_tbf == tbf) { |
| 188 | /* points to itself, ignore */ |
| 189 | } else if (tbf->m_old_tbf->m_new_tbf == tbf) { |
| 190 | LOGP(DRLCMAC, LOGL_INFO, |
| 191 | "%s Old TBF %s still exists, detaching\n", |
| 192 | tbf_name(tbf), tbf_name(tbf->m_old_tbf)); |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 193 | tbf->m_old_tbf->m_new_tbf = NULL; |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 194 | } else { |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 195 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: " |
| 196 | "tbf->m_old_tbf->m_new_tbf != tbf\n", |
| 197 | tbf_name(tbf)); |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 198 | } |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 199 | |
| 200 | tbf->m_old_tbf = NULL; |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | if (tbf->m_new_tbf) { |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 204 | if (tbf->m_new_tbf == tbf) { |
| 205 | /* points to itself, ignore */ |
| 206 | } else if (tbf->m_new_tbf->m_old_tbf == tbf) { |
| 207 | LOGP(DRLCMAC, LOGL_INFO, |
| 208 | "%s New TBF %s still exists, detaching\n", |
| 209 | tbf_name(tbf), tbf_name(tbf->m_new_tbf)); |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 210 | tbf->m_new_tbf->m_old_tbf = NULL; |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 211 | } else { |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 212 | LOGP(DRLCMAC, LOGL_ERROR, "%s Software error: " |
| 213 | "tbf->m_new_tbf->m_old_tbf != tbf\n", |
| 214 | tbf_name(tbf)); |
Jacob Erlbeck | 1842c92 | 2015-03-02 13:01:35 +0100 | [diff] [blame] | 215 | } |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 216 | |
| 217 | tbf->m_new_tbf = NULL; |
Jacob Erlbeck | 08fe76a | 2015-02-23 15:10:20 +0100 | [diff] [blame] | 218 | } |
| 219 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 220 | if (tbf->ms()) |
| 221 | tbf->set_ms(NULL); |
| 222 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 223 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF ends here **********\n"); |
| 224 | talloc_free(tbf); |
| 225 | } |
| 226 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 227 | int gprs_rlcmac_tbf::update() |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 228 | { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 229 | struct gprs_rlcmac_tbf *ul_tbf = NULL; |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 230 | struct gprs_rlcmac_bts *bts_data = bts->bts_data(); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 231 | int rc; |
| 232 | |
| 233 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF update **********\n"); |
| 234 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 235 | if (direction != GPRS_RLCMAC_DL_TBF) |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 236 | return -EINVAL; |
| 237 | |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame^] | 238 | if (ms()) { |
| 239 | ul_tbf = ms()->ul_tbf(); |
| 240 | } else if (is_tlli_valid()) { |
| 241 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 242 | "Using ul_tbf_by_tlli() since there is no MS object for " |
| 243 | "TLLI 0x%08x\n", m_tlli); |
| 244 | ul_tbf = bts->ul_tbf_by_tlli(m_tlli); |
| 245 | } |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 246 | |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 247 | tbf_unlink_pdch(this); |
| 248 | 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] | 249 | /* if no resource */ |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 250 | if (rc < 0) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 251 | LOGP(DRLCMAC, LOGL_ERROR, "No resource after update???\n"); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 252 | return -rc; |
| 253 | } |
| 254 | |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf) |
| 259 | { |
| 260 | if (tbf->control_ts == 0xff) |
| 261 | LOGP(DRLCMAC, LOGL_INFO, "- Setting Control TS %d\n", |
| 262 | tbf->first_common_ts); |
| 263 | else if (tbf->control_ts != tbf->first_common_ts) |
| 264 | LOGP(DRLCMAC, LOGL_INFO, "- Changing Control TS %d\n", |
| 265 | tbf->first_common_ts); |
| 266 | tbf->control_ts = tbf->first_common_ts; |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 271 | const char *gprs_rlcmac_tbf::tbf_state_name[] = { |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 272 | "NULL", |
| 273 | "ASSIGN", |
| 274 | "FLOW", |
| 275 | "FINISHED", |
| 276 | "WAIT RELEASE", |
| 277 | "RELEASING", |
| 278 | }; |
| 279 | |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 280 | void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T, |
| 281 | unsigned int seconds, unsigned int microseconds) |
| 282 | { |
| 283 | if (!osmo_timer_pending(&tbf->timer)) |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 284 | LOGP(DRLCMAC, LOGL_DEBUG, "%s starting timer %u.\n", |
| 285 | tbf_name(tbf), T); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 286 | else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 287 | LOGP(DRLCMAC, LOGL_DEBUG, "%s restarting timer %u " |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 288 | "while old timer %u pending \n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 289 | tbf_name(tbf), T, tbf->T); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 290 | |
| 291 | tbf->T = T; |
| 292 | tbf->num_T_exp = 0; |
| 293 | |
| 294 | /* Tunning timers can be safely re-scheduled. */ |
| 295 | tbf->timer.data = tbf; |
| 296 | tbf->timer.cb = &tbf_timer_cb; |
| 297 | |
| 298 | osmo_timer_schedule(&tbf->timer, seconds, microseconds); |
| 299 | } |
| 300 | |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 301 | void gprs_rlcmac_tbf::stop_t3191() |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 302 | { |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 303 | return stop_timer(); |
| 304 | } |
| 305 | |
| 306 | void gprs_rlcmac_tbf::stop_timer() |
| 307 | { |
| 308 | if (osmo_timer_pending(&timer)) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 309 | LOGP(DRLCMAC, LOGL_DEBUG, "%s stopping timer %u.\n", |
| 310 | tbf_name(this), T); |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 311 | osmo_timer_del(&timer); |
Holger Hans Peter Freyther | 4556130 | 2013-10-16 17:55:57 +0200 | [diff] [blame] | 312 | } |
| 313 | } |
| 314 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 315 | void gprs_rlcmac_tbf::poll_timeout() |
| 316 | { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 317 | LOGP(DRLCMAC, LOGL_NOTICE, "%s poll timeout\n", |
| 318 | tbf_name(this)); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 319 | |
| 320 | poll_state = GPRS_RLCMAC_POLL_NONE; |
| 321 | |
| 322 | if (ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) { |
| 323 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) { |
| 324 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 325 | "PACKET CONTROL ACK for PACKET UPLINK ACK\n"); |
| 326 | rlcmac_diag(); |
| 327 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK); |
| 328 | } |
| 329 | ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 330 | if (state_is(GPRS_RLCMAC_FINISHED)) { |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 331 | 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] | 332 | ul_tbf->m_n3103++; |
| 333 | 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] | 334 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 335 | "- N3103 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 336 | ul_tbf->set_state(GPRS_RLCMAC_RELEASING); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 337 | 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] | 338 | return; |
| 339 | } |
| 340 | /* reschedule UL ack */ |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 341 | 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] | 342 | } |
| 343 | } else if (ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) { |
| 344 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) { |
| 345 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 346 | "PACKET CONTROL ACK for PACKET UPLINK " |
| 347 | "ASSIGNMENT.\n"); |
| 348 | rlcmac_diag(); |
| 349 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS); |
| 350 | } |
| 351 | ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 352 | n3105++; |
| 353 | if (n3105 == bts_data()->n3105) { |
| 354 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 355 | set_state(GPRS_RLCMAC_RELEASING); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 356 | tbf_timer_start(this, 3195, bts_data()->t3195, 0); |
| 357 | return; |
| 358 | } |
| 359 | /* reschedule UL assignment */ |
| 360 | ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 361 | } else if (dl_ass_state == GPRS_RLCMAC_DL_ASS_WAIT_ACK) { |
| 362 | if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) { |
| 363 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 364 | "PACKET CONTROL ACK for PACKET DOWNLINK " |
| 365 | "ASSIGNMENT.\n"); |
| 366 | rlcmac_diag(); |
| 367 | state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS); |
| 368 | } |
| 369 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 370 | n3105++; |
| 371 | if (n3105 == bts->bts_data()->n3105) { |
| 372 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 373 | set_state(GPRS_RLCMAC_RELEASING); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 374 | tbf_timer_start(this, 3195, bts_data()->t3195, 0); |
| 375 | return; |
| 376 | } |
| 377 | /* reschedule DL assignment */ |
| 378 | dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; |
| 379 | } else if (direction == GPRS_RLCMAC_DL_TBF) { |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 380 | gprs_rlcmac_dl_tbf *dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(this); |
| 381 | |
| 382 | 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] | 383 | LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling " |
| 384 | "PACKET DOWNLINK ACK.\n"); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 385 | dl_tbf->rlcmac_diag(); |
| 386 | 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] | 387 | } |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 388 | dl_tbf->n3105++; |
| 389 | if (dl_tbf->n3105 == dl_tbf->bts->bts_data()->n3105) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 390 | LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n"); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 391 | dl_tbf->set_state(GPRS_RLCMAC_RELEASING); |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 392 | 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] | 393 | return; |
| 394 | } |
| 395 | /* resend IMM.ASS on CCCH on timeout */ |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 396 | if ((dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH)) |
| 397 | && !(dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) { |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 398 | LOGP(DRLCMAC, LOGL_DEBUG, "Re-send dowlink assignment " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 399 | "for %s on PCH (IMSI=%s)\n", |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 400 | tbf_name(dl_tbf), |
Holger Hans Peter Freyther | 5464c9b | 2013-10-27 20:57:35 +0100 | [diff] [blame] | 401 | m_imsi); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 402 | /* send immediate assignment */ |
Daniel Willmann | 6a16e0c | 2014-08-07 13:03:35 +0200 | [diff] [blame] | 403 | dl_tbf->bts->snd_dl_ass(dl_tbf, 0, m_imsi); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 404 | dl_tbf->m_wait_confirm = 1; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 405 | } |
| 406 | } else |
| 407 | LOGP(DRLCMAC, LOGL_ERROR, "- Poll Timeout, but no event!\n"); |
| 408 | } |
| 409 | |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 410 | static int setup_tbf(struct gprs_rlcmac_tbf *tbf, struct gprs_rlcmac_bts *bts, |
| 411 | 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] | 412 | uint8_t ms_class, uint8_t single_slot) |
| 413 | { |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 414 | int rc; |
| 415 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 416 | if (trx >= 8 || tfi >= 32) |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 417 | return -1; |
Daniel Willmann | 078bb71 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 418 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 419 | if (!tbf) |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 420 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 421 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 422 | /* Back pointer for PODS llist compatibility */ |
| 423 | tbf->list.back = tbf; |
| 424 | |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 425 | tbf->m_created_ts = time(NULL); |
Holger Hans Peter Freyther | 9f0c1d2 | 2013-10-19 21:24:34 +0200 | [diff] [blame] | 426 | tbf->bts = bts->bts; |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 427 | tbf->m_tfi = tfi; |
Holger Hans Peter Freyther | 743bafa | 2013-09-29 07:50:50 +0200 | [diff] [blame] | 428 | tbf->trx = &bts->trx[trx]; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 429 | tbf->ms_class = ms_class; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 430 | /* select algorithm */ |
| 431 | rc = bts->alloc_algorithm(bts, old_tbf, tbf, bts->alloc_algorithm_curst, |
| 432 | single_slot); |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 433 | /* if no resource */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 434 | if (rc < 0) { |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 435 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 436 | } |
| 437 | /* assign control ts */ |
| 438 | tbf->control_ts = 0xff; |
| 439 | rc = tbf_assign_control_ts(tbf); |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 440 | /* if no resource */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 441 | if (rc < 0) { |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 442 | return -1; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | /* set timestamp */ |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 446 | gettimeofday(&tbf->meas.rssi_tv, NULL); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 447 | |
Holger Hans Peter Freyther | 758dc12 | 2013-11-06 20:39:45 +0100 | [diff] [blame] | 448 | tbf->m_llc.init(); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | |
| 453 | struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, |
| 454 | struct gprs_rlcmac_tbf *old_tbf, uint8_t tfi, uint8_t trx, |
| 455 | uint8_t ms_class, uint8_t single_slot) |
| 456 | { |
| 457 | struct gprs_rlcmac_ul_tbf *tbf; |
| 458 | int rc; |
| 459 | |
| 460 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
| 461 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 462 | "MS_CLASS=%d\n", "UL", tfi, trx, ms_class); |
| 463 | |
| 464 | if (trx >= 8 || tfi >= 32) |
| 465 | return NULL; |
| 466 | |
| 467 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_ul_tbf); |
| 468 | |
| 469 | if (!tbf) |
| 470 | return NULL; |
| 471 | |
| 472 | tbf->direction = GPRS_RLCMAC_UL_TBF; |
| 473 | rc = setup_tbf(tbf, bts, old_tbf, tfi, trx, ms_class, single_slot); |
| 474 | /* if no resource */ |
| 475 | if (rc < 0) { |
| 476 | talloc_free(tbf); |
| 477 | return NULL; |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 478 | } |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 479 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 480 | llist_add(&tbf->list.list, &bts->ul_tbfs); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 481 | tbf->bts->tbf_ul_created(); |
| 482 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 483 | if (old_tbf && old_tbf->ms()) |
| 484 | tbf->set_ms(old_tbf->ms()); |
| 485 | |
| 486 | if (tbf->ms()) |
| 487 | tbf->ms()->attach_ul_tbf(tbf); |
| 488 | |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 489 | return tbf; |
| 490 | } |
| 491 | |
| 492 | struct gprs_rlcmac_dl_tbf *tbf_alloc_dl_tbf(struct gprs_rlcmac_bts *bts, |
| 493 | struct gprs_rlcmac_tbf *old_tbf, uint8_t tfi, uint8_t trx, |
| 494 | uint8_t ms_class, uint8_t single_slot) |
| 495 | { |
| 496 | struct gprs_rlcmac_dl_tbf *tbf; |
| 497 | int rc; |
| 498 | |
| 499 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
| 500 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 501 | "MS_CLASS=%d\n", "DL", tfi, trx, ms_class); |
| 502 | |
| 503 | if (trx >= 8 || tfi >= 32) |
| 504 | return NULL; |
| 505 | |
| 506 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_dl_tbf); |
| 507 | |
| 508 | if (!tbf) |
| 509 | return NULL; |
| 510 | |
| 511 | tbf->direction = GPRS_RLCMAC_DL_TBF; |
| 512 | rc = setup_tbf(tbf, bts, old_tbf, tfi, trx, ms_class, single_slot); |
| 513 | /* if no resource */ |
| 514 | if (rc < 0) { |
| 515 | talloc_free(tbf); |
| 516 | return NULL; |
| 517 | } |
| 518 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 519 | llist_add(&tbf->list.list, &bts->dl_tbfs); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 520 | tbf->bts->tbf_dl_created(); |
| 521 | |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 522 | tbf->m_last_dl_poll_fn = -1; |
Jacob Erlbeck | 3bed5d1 | 2015-03-19 11:22:38 +0100 | [diff] [blame] | 523 | tbf->m_last_dl_drained_fn = -1; |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 524 | |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 525 | gettimeofday(&tbf->m_bw.dl_bw_tv, NULL); |
| 526 | gettimeofday(&tbf->m_bw.dl_loss_tv, NULL); |
| 527 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 528 | if (old_tbf && old_tbf->ms()) |
| 529 | tbf->set_ms(old_tbf->ms()); |
| 530 | |
| 531 | if (tbf->ms()) |
| 532 | tbf->ms()->attach_dl_tbf(tbf); |
| 533 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 534 | return tbf; |
| 535 | } |
| 536 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 537 | static void tbf_timer_cb(void *_tbf) |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 538 | { |
| 539 | struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 540 | tbf->handle_timeout(); |
| 541 | } |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 542 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 543 | void gprs_rlcmac_tbf::handle_timeout() |
| 544 | { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 545 | LOGP(DRLCMAC, LOGL_DEBUG, "%s timer %u expired.\n", |
| 546 | tbf_name(this), T); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 547 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 548 | num_T_exp++; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 549 | |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 550 | switch (T) { |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 551 | case 0: /* assignment */ |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 552 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) { |
| 553 | if (state_is(GPRS_RLCMAC_ASSIGN)) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 554 | LOGP(DRLCMAC, LOGL_NOTICE, "%s releasing due to " |
| 555 | "PACCH assignment timeout.\n", tbf_name(this)); |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 556 | tbf_free(this); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 557 | return; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 558 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 559 | LOGP(DRLCMAC, LOGL_ERROR, "Error: %s is not " |
| 560 | "in assign state\n", tbf_name(this)); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 561 | } |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 562 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) { |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 563 | 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] | 564 | dl_tbf->m_wait_confirm = 0; |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 565 | if (dl_tbf->state_is(GPRS_RLCMAC_ASSIGN)) { |
| 566 | tbf_assign_control_ts(dl_tbf); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 567 | |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 568 | if (!dl_tbf->upgrade_to_multislot) { |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 569 | /* change state to FLOW, so scheduler |
| 570 | * will start transmission */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 571 | dl_tbf->set_state(GPRS_RLCMAC_FLOW); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 572 | break; |
| 573 | } |
| 574 | |
| 575 | /* This tbf can be upgraded to use multiple DL |
| 576 | * timeslots and now that there is already one |
| 577 | * slot assigned send another DL assignment via |
| 578 | * PDCH. */ |
| 579 | |
| 580 | /* keep to flags */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 581 | dl_tbf->state_flags &= GPRS_RLCMAC_FLAG_TO_MASK; |
| 582 | dl_tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 583 | |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 584 | dl_tbf->update(); |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 585 | |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 586 | dl_tbf->bts->trigger_dl_ass(dl_tbf, dl_tbf, NULL); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 587 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 588 | LOGP(DRLCMAC, LOGL_NOTICE, "%s Continue flow after " |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 589 | "IMM.ASS confirm\n", tbf_name(dl_tbf)); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 590 | } |
| 591 | break; |
| 592 | case 3169: |
| 593 | case 3191: |
| 594 | case 3195: |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 595 | LOGP(DRLCMAC, LOGL_NOTICE, "%s T%d timeout during " |
| 596 | "transsmission\n", tbf_name(this), T); |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 597 | rlcmac_diag(); |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 598 | /* fall through */ |
| 599 | case 3193: |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 600 | LOGP(DRLCMAC, LOGL_DEBUG, |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 601 | "%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] | 602 | /* free TBF */ |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 603 | tbf_free(this); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 604 | return; |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 605 | break; |
| 606 | default: |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 607 | LOGP(DRLCMAC, LOGL_ERROR, |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 608 | "%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] | 609 | } |
| 610 | } |
| 611 | |
| 612 | int gprs_rlcmac_tbf::rlcmac_diag() |
| 613 | { |
| 614 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) |
| 615 | LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on CCCH\n"); |
| 616 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) |
| 617 | LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on PACCH\n"); |
| 618 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_UL_DATA))) |
| 619 | LOGP(DRLCMAC, LOGL_NOTICE, "- Uplink data was received\n"); |
| 620 | else if (direction == GPRS_RLCMAC_UL_TBF) |
| 621 | LOGP(DRLCMAC, LOGL_NOTICE, "- No uplink data received yet\n"); |
| 622 | if ((state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) |
| 623 | LOGP(DRLCMAC, LOGL_NOTICE, "- Downlink ACK was received\n"); |
| 624 | else if (direction == GPRS_RLCMAC_DL_TBF) |
| 625 | LOGP(DRLCMAC, LOGL_NOTICE, "- No downlink ACK received yet\n"); |
| 626 | |
| 627 | return 0; |
| 628 | } |
| 629 | |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 630 | struct msgb *gprs_rlcmac_tbf::create_dl_ass(uint32_t fn) |
| 631 | { |
| 632 | struct msgb *msg; |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 633 | struct gprs_rlcmac_dl_tbf *new_dl_tbf; |
Holger Hans Peter Freyther | 9977e15 | 2013-11-24 22:52:10 +0100 | [diff] [blame] | 634 | int poll_ass_dl = 1; |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 635 | |
Holger Hans Peter Freyther | 9977e15 | 2013-11-24 22:52:10 +0100 | [diff] [blame] | 636 | 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] | 637 | LOGP(DRLCMAC, LOGL_NOTICE, "Cannot poll for downlink " |
| 638 | "assigment, because MS cannot reply. (control TS=%d, " |
| 639 | "first common TS=%d)\n", control_ts, |
| 640 | first_common_ts); |
| 641 | poll_ass_dl = 0; |
| 642 | } |
| 643 | if (poll_ass_dl) { |
| 644 | if (poll_state != GPRS_RLCMAC_POLL_NONE) { |
| 645 | LOGP(DRLCMAC, LOGL_DEBUG, "Polling is already sheduled " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 646 | "for %s, so we must wait for downlink " |
| 647 | "assignment...\n", tbf_name(this)); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 648 | return NULL; |
| 649 | } |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 650 | 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] | 651 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already " |
| 652 | "scheduled for single block allocation...\n"); |
| 653 | return NULL; |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | /* on uplink TBF we get the downlink TBF to be assigned. */ |
| 658 | if (direction == GPRS_RLCMAC_UL_TBF) { |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 659 | gprs_rlcmac_ul_tbf *ul_tbf = static_cast<gprs_rlcmac_ul_tbf *>(this); |
| 660 | |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 661 | /* be sure to check first, if contention resolution is done, |
| 662 | * otherwise we cannot send the assignment yet */ |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 663 | if (!ul_tbf->m_contention_resolution_done) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 664 | LOGP(DRLCMAC, LOGL_DEBUG, "Cannot assign DL TBF now, " |
| 665 | "because contention resolution is not " |
| 666 | "finished.\n"); |
| 667 | return NULL; |
| 668 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 669 | } |
| 670 | |
| 671 | new_dl_tbf = static_cast<gprs_rlcmac_dl_tbf *>(m_new_tbf); |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 672 | if (!new_dl_tbf) { |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 673 | LOGP(DRLCMACDL, LOGL_ERROR, "We have a schedule for downlink " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 674 | "assignment at uplink %s, but there is no downlink " |
| 675 | "TBF\n", tbf_name(this)); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 676 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
| 677 | return NULL; |
| 678 | } |
| 679 | |
Holger Hans Peter Freyther | f5c9747 | 2014-12-26 18:32:00 +0100 | [diff] [blame] | 680 | new_dl_tbf->was_releasing = was_releasing; |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 681 | msg = msgb_alloc(23, "rlcmac_dl_ass"); |
| 682 | if (!msg) |
| 683 | return NULL; |
| 684 | bitvec *ass_vec = bitvec_alloc(23); |
| 685 | if (!ass_vec) { |
| 686 | msgb_free(msg); |
| 687 | return NULL; |
| 688 | } |
| 689 | bitvec_unhex(ass_vec, |
| 690 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 691 | 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] | 692 | 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] | 693 | Encoding::write_packet_downlink_assignment(mac_control_block, m_tfi, |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 694 | (direction == GPRS_RLCMAC_DL_TBF), new_dl_tbf, |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 695 | poll_ass_dl, bts_data()->alpha, bts_data()->gamma, -1, 0); |
| 696 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++\n"); |
| 697 | encode_gsm_rlcmac_downlink(ass_vec, mac_control_block); |
| 698 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 699 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Downlink Assignment -------------------------\n"); |
| 700 | bitvec_pack(ass_vec, msgb_put(msg, 23)); |
| 701 | bitvec_free(ass_vec); |
| 702 | talloc_free(mac_control_block); |
| 703 | |
| 704 | if (poll_ass_dl) { |
| 705 | poll_state = GPRS_RLCMAC_POLL_SCHED; |
| 706 | poll_fn = (fn + 13) % 2715648; |
| 707 | dl_ass_state = GPRS_RLCMAC_DL_ASS_WAIT_ACK; |
| 708 | } else { |
| 709 | dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 710 | new_dl_tbf->set_state(GPRS_RLCMAC_FLOW); |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 711 | tbf_assign_control_ts(new_dl_tbf); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 712 | /* stop pending assignment timer */ |
Daniel Willmann | b2886f1 | 2014-08-07 14:48:20 +0200 | [diff] [blame] | 713 | new_dl_tbf->stop_timer(); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 714 | |
| 715 | } |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 716 | |
| 717 | return msg; |
| 718 | } |
| 719 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 720 | struct msgb *gprs_rlcmac_tbf::create_ul_ass(uint32_t fn) |
| 721 | { |
| 722 | struct msgb *msg; |
Daniel Willmann | 350f64d | 2014-08-07 14:54:11 +0200 | [diff] [blame] | 723 | struct gprs_rlcmac_ul_tbf *new_tbf; |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 724 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 725 | if (poll_state != GPRS_RLCMAC_POLL_NONE) { |
| 726 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 727 | "sheduled for %s, so we must wait for uplink " |
| 728 | "assignment...\n", tbf_name(this)); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 729 | return NULL; |
| 730 | } |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 731 | 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] | 732 | LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already scheduled for " |
| 733 | "single block allocation...\n"); |
| 734 | return NULL; |
| 735 | } |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 736 | |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 737 | new_tbf = static_cast<gprs_rlcmac_ul_tbf *>(m_new_tbf); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 738 | if (!new_tbf) { |
| 739 | LOGP(DRLCMACUL, LOGL_ERROR, "We have a schedule for uplink " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 740 | "assignment at downlink %s, but there is no uplink " |
| 741 | "TBF\n", tbf_name(this)); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 742 | ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
| 743 | return NULL; |
| 744 | } |
| 745 | |
| 746 | msg = msgb_alloc(23, "rlcmac_ul_ass"); |
| 747 | if (!msg) |
| 748 | return NULL; |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 749 | 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] | 750 | bitvec *ass_vec = bitvec_alloc(23); |
| 751 | if (!ass_vec) { |
| 752 | msgb_free(msg); |
| 753 | return NULL; |
| 754 | } |
| 755 | bitvec_unhex(ass_vec, |
| 756 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 757 | Encoding::write_packet_uplink_assignment(bts_data(), ass_vec, m_tfi, |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 758 | (direction == GPRS_RLCMAC_DL_TBF), m_tlli, |
Holger Hans Peter Freyther | 9977e15 | 2013-11-24 22:52:10 +0100 | [diff] [blame] | 759 | m_tlli_valid, new_tbf, 1, bts_data()->alpha, |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 760 | bts_data()->gamma, -1); |
| 761 | bitvec_pack(ass_vec, msgb_put(msg, 23)); |
| 762 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| 763 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Uplink Assignment +++++++++++++++++++++++++\n"); |
| 764 | decode_gsm_rlcmac_downlink(ass_vec, mac_control_block); |
| 765 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 766 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Uplink Assignment -------------------------\n"); |
| 767 | bitvec_free(ass_vec); |
| 768 | talloc_free(mac_control_block); |
| 769 | |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 770 | poll_state = GPRS_RLCMAC_POLL_SCHED; |
| 771 | poll_fn = (fn + 13) % 2715648; |
| 772 | ul_ass_state = GPRS_RLCMAC_UL_ASS_WAIT_ACK; |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 773 | |
| 774 | return msg; |
| 775 | } |
| 776 | |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 777 | void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_trx *trx) |
| 778 | { |
| 779 | for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| 780 | struct gprs_rlcmac_tbf *tbf; |
| 781 | |
| 782 | tbf = trx->ul_tbf[tfi]; |
| 783 | if (tbf) |
| 784 | tbf_free(tbf); |
| 785 | tbf = trx->dl_tbf[tfi]; |
| 786 | if (tbf) |
| 787 | tbf_free(tbf); |
| 788 | } |
| 789 | } |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 790 | |
| 791 | void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_pdch *pdch) |
| 792 | { |
| 793 | for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| 794 | struct gprs_rlcmac_tbf *tbf; |
| 795 | |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 796 | tbf = pdch->ul_tbf_by_tfi(tfi); |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 797 | if (tbf) |
| 798 | tbf_free(tbf); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 799 | tbf = pdch->dl_tbf_by_tfi(tfi); |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 800 | if (tbf) |
| 801 | tbf_free(tbf); |
| 802 | } |
| 803 | } |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 804 | |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 805 | void gprs_rlcmac_tbf::tlli_mark_valid() |
| 806 | { |
| 807 | m_tlli_valid = true; |
| 808 | } |
| 809 | |
| 810 | void gprs_rlcmac_tbf::update_tlli(uint32_t tlli) |
| 811 | { |
| 812 | if (tlli == m_tlli) |
| 813 | return; |
| 814 | |
Holger Hans Peter Freyther | b809866 | 2013-10-30 14:50:17 +0100 | [diff] [blame] | 815 | bool changedUl = false; |
| 816 | |
| 817 | /* |
| 818 | * During a Routing Area Update (due the assignment of a new |
| 819 | * P-TMSI) the tlli can change. We notice this when receiving |
| 820 | * a PACKET CONTROL ACK. |
| 821 | * When we get a TLLI change on the DL we will look if there |
| 822 | * is a UL TBF and change the tlli there as well. |
| 823 | * |
| 824 | * TODO: There could be multiple DL and UL TBFs and we should |
| 825 | * have a proper way to link all the related TBFs so we can do |
| 826 | * a group update. |
| 827 | */ |
| 828 | if (m_tlli_valid && direction == GPRS_RLCMAC_DL_TBF) { |
| 829 | gprs_rlcmac_tbf *ul_tbf; |
Daniel Willmann | b59d61b | 2014-07-02 17:58:14 +0200 | [diff] [blame] | 830 | ul_tbf = bts->ul_tbf_by_tlli(m_tlli); |
Holger Hans Peter Freyther | b809866 | 2013-10-30 14:50:17 +0100 | [diff] [blame] | 831 | |
| 832 | if (ul_tbf) { |
| 833 | ul_tbf->m_tlli = tlli; |
| 834 | changedUl = true; |
| 835 | } |
| 836 | } |
| 837 | |
Holger Hans Peter Freyther | bc1626e | 2013-10-30 19:50:49 +0100 | [diff] [blame] | 838 | /* update the timing advance for the new tlli */ |
| 839 | bts->timing_advance()->update(m_tlli, tlli, ta); |
| 840 | |
Holger Hans Peter Freyther | b809866 | 2013-10-30 14:50:17 +0100 | [diff] [blame] | 841 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 842 | "%s changing tlli from TLLI=0x%08x TLLI=0x%08x ul_changed=%d\n", |
| 843 | tbf_name(this), m_tlli, tlli, changedUl); |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 844 | m_tlli = tlli; |
| 845 | } |
| 846 | |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 847 | int gprs_rlcmac_tbf::extract_tlli(const uint8_t *data, const size_t len) |
| 848 | { |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame^] | 849 | struct gprs_rlcmac_tbf *dl_tbf = NULL; |
| 850 | struct gprs_rlcmac_tbf *ul_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 851 | struct rlc_ul_header *rh = (struct rlc_ul_header *)data; |
| 852 | uint32_t new_tlli; |
| 853 | int rc; |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame^] | 854 | GprsMs *old_ms; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 855 | |
| 856 | /* no TLLI yet */ |
| 857 | if (!rh->ti) { |
| 858 | LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA TFI=%d without " |
| 859 | "TLLI, but no TLLI received yet\n", rh->tfi); |
| 860 | return 0; |
| 861 | } |
| 862 | rc = Decoding::tlli_from_ul_data(data, len, &new_tlli); |
| 863 | if (rc) { |
| 864 | bts->decode_error(); |
| 865 | LOGP(DRLCMACUL, LOGL_NOTICE, "Failed to decode TLLI " |
| 866 | "of UL DATA TFI=%d.\n", rh->tfi); |
| 867 | return 0; |
| 868 | } |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame^] | 869 | |
| 870 | old_ms = bts->ms_by_tlli(new_tlli); |
| 871 | if (old_ms) { |
| 872 | /* Get them before calling set_ms() */ |
| 873 | dl_tbf = old_ms->dl_tbf(); |
| 874 | ul_tbf = old_ms->ul_tbf(); |
| 875 | |
| 876 | set_ms(old_ms); |
| 877 | } |
| 878 | |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 879 | update_tlli(new_tlli); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 880 | update_ms(new_tlli); |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 881 | LOGP(DRLCMACUL, LOGL_INFO, "Decoded premier TLLI=0x%08x of " |
| 882 | "UL DATA TFI=%d.\n", tlli(), rh->tfi); |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame^] | 883 | if (dl_tbf) { |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 884 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
| 885 | "TLLI=0x%08x while %s still exists. " |
| 886 | "Killing pending DL TBF\n", tlli(), |
| 887 | tbf_name(dl_tbf)); |
| 888 | tbf_free(dl_tbf); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 889 | dl_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 890 | } |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame^] | 891 | if (ul_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 UL TBF\n", tlli(), |
| 895 | tbf_name(ul_tbf)); |
| 896 | tbf_free(ul_tbf); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 897 | ul_tbf = NULL; |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 898 | } |
| 899 | /* mark TLLI valid now */ |
| 900 | tlli_mark_valid(); |
| 901 | /* store current timing advance */ |
| 902 | bts->timing_advance()->remember(tlli(), ta); |
| 903 | return 1; |
| 904 | } |
| 905 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 906 | const char *tbf_name(gprs_rlcmac_tbf *tbf) |
| 907 | { |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 908 | return tbf->name(); |
| 909 | } |
| 910 | |
| 911 | const char *gprs_rlcmac_tbf::name() const |
| 912 | { |
| 913 | snprintf(m_name_buf, sizeof(m_name_buf) - 1, |
| 914 | "TBF(TFI=%d TLLI=0x%08x DIR=%s STATE=%s)", |
| 915 | m_tfi, m_tlli, |
| 916 | direction == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| 917 | state_name() |
| 918 | ); |
| 919 | m_name_buf[sizeof(m_name_buf) - 1] = '\0'; |
| 920 | return m_name_buf; |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 921 | } |
Holger Hans Peter Freyther | 758dc12 | 2013-11-06 20:39:45 +0100 | [diff] [blame] | 922 | |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 923 | void gprs_rlcmac_tbf::rotate_in_list() |
| 924 | { |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 925 | llist_del(&list.list); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 926 | if (direction == GPRS_RLCMAC_UL_TBF) |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 927 | llist_add(&list.list, &bts->bts_data()->ul_tbfs); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 928 | else |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 929 | llist_add(&list.list, &bts->bts_data()->dl_tbfs); |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 930 | } |
Holger Hans Peter Freyther | 8f399de | 2013-12-25 20:22:35 +0100 | [diff] [blame] | 931 | |
| 932 | uint8_t gprs_rlcmac_tbf::tsc() const |
| 933 | { |
| 934 | return trx->pdch[first_ts].tsc; |
| 935 | } |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 936 | |
Jacob Erlbeck | c0c580c | 2015-04-30 15:59:01 +0200 | [diff] [blame] | 937 | void tbf_print_vty_info(struct vty *vty, struct llist_head *ltbf) |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 938 | { |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 939 | gprs_rlcmac_tbf *tbf = llist_pods_entry(ltbf, gprs_rlcmac_tbf); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 940 | |
Daniel Willmann | 772415f | 2014-01-15 17:06:51 +0100 | [diff] [blame] | 941 | 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] | 942 | tbf->tlli(), tbf->is_tlli_valid() ? "valid" : "invalid", |
| 943 | tbf->direction == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| 944 | tbf->imsi(), VTY_NEWLINE); |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 945 | 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] | 946 | "MS_CLASS=%d%s", |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 947 | tbf->created_ts(), tbf->state_flags, tbf->first_ts, |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 948 | tbf->first_common_ts, tbf->control_ts, tbf->ms_class, |
| 949 | VTY_NEWLINE); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 950 | vty_out(vty, " TS_alloc="); |
| 951 | for (int i = 0; i < 8; i++) { |
| 952 | if (tbf->pdch[i]) |
| 953 | vty_out(vty, "%d ", i); |
| 954 | } |
Daniel Willmann | 772415f | 2014-01-15 17:06:51 +0100 | [diff] [blame] | 955 | vty_out(vty, " CS=%d%s%s", tbf->cs, VTY_NEWLINE, VTY_NEWLINE); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 956 | } |