Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 1 | /* gprs_ms.cpp |
| 2 | * |
| 3 | * Copyright (C) 2015 by Sysmocom s.f.m.c. GmbH |
| 4 | * Author: Jacob Erlbeck <jerlbeck@sysmocom.de> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version 2 |
| 9 | * of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | |
| 22 | #include "gprs_ms.h" |
| 23 | |
Jacob Erlbeck | a700dd9 | 2015-06-02 16:00:41 +0200 | [diff] [blame] | 24 | #include "bts.h" |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 25 | #include "tbf.h" |
| 26 | #include "gprs_debug.h" |
Jacob Erlbeck | d4ad731 | 2015-07-17 16:39:09 +0200 | [diff] [blame] | 27 | #include "gprs_codel.h" |
Jacob Erlbeck | 7c72aca | 2016-01-22 17:06:14 +0100 | [diff] [blame] | 28 | #include "pcu_utils.h" |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 29 | |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 30 | #include <time.h> |
| 31 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 32 | extern "C" { |
| 33 | #include <osmocom/core/talloc.h> |
| 34 | #include <osmocom/core/utils.h> |
| 35 | } |
| 36 | |
Jacob Erlbeck | 1c3b899 | 2015-08-14 16:01:36 +0200 | [diff] [blame] | 37 | #define GPRS_CODEL_SLOW_INTERVAL_MS 4000 |
Jacob Erlbeck | d4ad731 | 2015-07-17 16:39:09 +0200 | [diff] [blame] | 38 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 39 | extern void *tall_pcu_ctx; |
| 40 | |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 41 | static int64_t now_msec() |
| 42 | { |
| 43 | struct timespec ts; |
| 44 | clock_gettime(CLOCK_MONOTONIC, &ts); |
| 45 | |
| 46 | return int64_t(ts.tv_sec) * 1000 + ts.tv_nsec / 1000000; |
| 47 | } |
| 48 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 49 | struct GprsMsDefaultCallback: public GprsMs::Callback { |
| 50 | virtual void ms_idle(class GprsMs *ms) { |
| 51 | delete ms; |
| 52 | } |
| 53 | virtual void ms_active(class GprsMs *) {} |
| 54 | }; |
| 55 | |
| 56 | static GprsMsDefaultCallback gprs_default_cb; |
| 57 | |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 58 | GprsMs::Guard::Guard(GprsMs *ms) : |
| 59 | m_ms(ms ? ms->ref() : NULL) |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 60 | { |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | GprsMs::Guard::~Guard() |
| 64 | { |
| 65 | if (m_ms) |
| 66 | m_ms->unref(); |
| 67 | } |
| 68 | |
Jacob Erlbeck | b2439bb | 2015-07-13 14:23:32 +0200 | [diff] [blame] | 69 | bool GprsMs::Guard::is_idle() const |
| 70 | { |
| 71 | if (!m_ms) |
| 72 | return true; |
| 73 | |
| 74 | return !m_ms->m_ul_tbf && !m_ms->m_dl_tbf && m_ms->m_ref == 1; |
| 75 | } |
| 76 | |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 77 | void GprsMs::timeout(void *priv_) |
| 78 | { |
| 79 | GprsMs *ms = static_cast<GprsMs *>(priv_); |
| 80 | |
| 81 | LOGP(DRLCMAC, LOGL_INFO, "Timeout for MS object, TLLI = 0x%08x\n", |
| 82 | ms->tlli()); |
| 83 | |
| 84 | if (ms->m_timer.data) { |
| 85 | ms->m_timer.data = NULL; |
| 86 | ms->unref(); |
| 87 | } |
| 88 | } |
| 89 | |
Jacob Erlbeck | 17214bb | 2015-06-02 14:06:12 +0200 | [diff] [blame] | 90 | GprsMs::GprsMs(BTS *bts, uint32_t tlli) : |
| 91 | m_bts(bts), |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 92 | m_cb(&gprs_default_cb), |
| 93 | m_ul_tbf(NULL), |
| 94 | m_dl_tbf(NULL), |
| 95 | m_tlli(tlli), |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 96 | m_new_ul_tlli(0), |
| 97 | m_new_dl_tlli(0), |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 98 | m_ta(0), |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 99 | m_ms_class(0), |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 100 | m_egprs_ms_class(0), |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 101 | m_is_idle(true), |
Jacob Erlbeck | 5367086 | 2015-05-12 17:54:33 +0200 | [diff] [blame] | 102 | m_ref(0), |
Jacob Erlbeck | 25db7c6 | 2015-06-11 12:59:01 +0200 | [diff] [blame] | 103 | m_list(this), |
Jacob Erlbeck | 04a1086 | 2015-06-12 16:01:56 +0200 | [diff] [blame] | 104 | m_delay(0), |
Jacob Erlbeck | 23f93a1 | 2015-06-30 08:52:54 +0200 | [diff] [blame] | 105 | m_nack_rate_dl(0), |
| 106 | m_reserved_dl_slots(0), |
| 107 | m_reserved_ul_slots(0), |
Jacob Erlbeck | d4ad731 | 2015-07-17 16:39:09 +0200 | [diff] [blame] | 108 | m_current_trx(NULL), |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 109 | m_codel_state(NULL), |
| 110 | m_mode(GprsCodingScheme::GPRS) |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 111 | { |
Jacob Erlbeck | d4ad731 | 2015-07-17 16:39:09 +0200 | [diff] [blame] | 112 | int codel_interval = LLC_CODEL_USE_DEFAULT; |
| 113 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 114 | LOGP(DRLCMAC, LOGL_INFO, "Creating MS object, TLLI = 0x%08x\n", tlli); |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 115 | |
| 116 | m_imsi[0] = 0; |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 117 | memset(&m_timer, 0, sizeof(m_timer)); |
| 118 | m_timer.cb = GprsMs::timeout; |
Jacob Erlbeck | 489a2b3 | 2015-05-28 19:07:01 +0200 | [diff] [blame] | 119 | m_llc_queue.init(); |
Jacob Erlbeck | a700dd9 | 2015-06-02 16:00:41 +0200 | [diff] [blame] | 120 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 121 | set_mode(m_mode); |
Jacob Erlbeck | d4ad731 | 2015-07-17 16:39:09 +0200 | [diff] [blame] | 122 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 123 | if (m_bts) |
Jacob Erlbeck | d4ad731 | 2015-07-17 16:39:09 +0200 | [diff] [blame] | 124 | codel_interval = m_bts->bts_data()->llc_codel_interval_msec; |
Jacob Erlbeck | d4ad731 | 2015-07-17 16:39:09 +0200 | [diff] [blame] | 125 | |
| 126 | if (codel_interval) { |
| 127 | if (codel_interval == LLC_CODEL_USE_DEFAULT) |
| 128 | codel_interval = GPRS_CODEL_SLOW_INTERVAL_MS; |
| 129 | m_codel_state = talloc(this, struct gprs_codel); |
| 130 | gprs_codel_init(m_codel_state); |
| 131 | gprs_codel_set_interval(m_codel_state, codel_interval); |
Jacob Erlbeck | a700dd9 | 2015-06-02 16:00:41 +0200 | [diff] [blame] | 132 | } |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 133 | m_last_cs_not_low = now_msec(); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | GprsMs::~GprsMs() |
| 137 | { |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 138 | LListHead<gprs_rlcmac_tbf> *pos, *tmp; |
| 139 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 140 | LOGP(DRLCMAC, LOGL_INFO, "Destroying MS object, TLLI = 0x%08x\n", tlli()); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 141 | |
Jacob Erlbeck | 23f93a1 | 2015-06-30 08:52:54 +0200 | [diff] [blame] | 142 | set_reserved_slots(NULL, 0, 0); |
| 143 | |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 144 | if (osmo_timer_pending(&m_timer)) |
| 145 | osmo_timer_del(&m_timer); |
| 146 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 147 | if (m_ul_tbf) { |
| 148 | m_ul_tbf->set_ms(NULL); |
| 149 | m_ul_tbf = NULL; |
| 150 | } |
| 151 | |
| 152 | if (m_dl_tbf) { |
| 153 | m_dl_tbf->set_ms(NULL); |
| 154 | m_dl_tbf = NULL; |
| 155 | } |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 156 | |
| 157 | llist_for_each_safe(pos, tmp, &m_old_tbfs) |
| 158 | pos->entry()->set_ms(NULL); |
| 159 | |
Jacob Erlbeck | 17214bb | 2015-06-02 14:06:12 +0200 | [diff] [blame] | 160 | m_llc_queue.clear(m_bts); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | void* GprsMs::operator new(size_t size) |
| 164 | { |
| 165 | static void *tall_ms_ctx = NULL; |
| 166 | if (!tall_ms_ctx) |
| 167 | tall_ms_ctx = talloc_named_const(tall_pcu_ctx, 0, __PRETTY_FUNCTION__); |
| 168 | |
| 169 | return talloc_size(tall_ms_ctx, size); |
| 170 | } |
| 171 | |
| 172 | void GprsMs::operator delete(void* p) |
| 173 | { |
| 174 | talloc_free(p); |
| 175 | } |
| 176 | |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 177 | GprsMs *GprsMs::ref() |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 178 | { |
| 179 | m_ref += 1; |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 180 | return this; |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | void GprsMs::unref() |
| 184 | { |
| 185 | OSMO_ASSERT(m_ref >= 0); |
| 186 | m_ref -= 1; |
| 187 | if (m_ref == 0) |
| 188 | update_status(); |
| 189 | } |
| 190 | |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 191 | void GprsMs::start_timer() |
| 192 | { |
| 193 | if (m_delay == 0) |
| 194 | return; |
| 195 | |
| 196 | if (!m_timer.data) |
| 197 | m_timer.data = ref(); |
| 198 | |
| 199 | osmo_timer_schedule(&m_timer, m_delay, 0); |
| 200 | } |
| 201 | |
| 202 | void GprsMs::stop_timer() |
| 203 | { |
| 204 | if (!m_timer.data) |
| 205 | return; |
| 206 | |
| 207 | osmo_timer_del(&m_timer); |
| 208 | m_timer.data = NULL; |
| 209 | unref(); |
| 210 | } |
| 211 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 212 | void GprsMs::set_mode(GprsCodingScheme::Mode mode) |
| 213 | { |
| 214 | m_mode = mode; |
| 215 | |
Jacob Erlbeck | 53bc186 | 2016-01-18 17:23:09 +0100 | [diff] [blame] | 216 | if (!m_bts) |
| 217 | return; |
| 218 | |
Holger Hans Peter Freyther | 99db40a | 2016-03-04 18:19:02 +0100 | [diff] [blame] | 219 | switch (m_mode) { |
| 220 | case GprsCodingScheme::GPRS: |
| 221 | if (!m_current_cs_ul.isGprs()) { |
| 222 | m_current_cs_ul = GprsCodingScheme::getGprsByNum( |
| 223 | m_bts->bts_data()->initial_cs_ul); |
| 224 | if (!m_current_cs_ul.isValid()) |
| 225 | m_current_cs_ul = GprsCodingScheme::CS1; |
| 226 | } |
| 227 | if (!m_current_cs_dl.isGprs()) { |
| 228 | m_current_cs_dl = GprsCodingScheme::getGprsByNum( |
| 229 | m_bts->bts_data()->initial_cs_dl); |
| 230 | if (!m_current_cs_dl.isValid()) |
| 231 | m_current_cs_dl = GprsCodingScheme::CS1; |
| 232 | } |
| 233 | break; |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 234 | |
Holger Hans Peter Freyther | 99db40a | 2016-03-04 18:19:02 +0100 | [diff] [blame] | 235 | case GprsCodingScheme::EGPRS_GMSK: |
| 236 | case GprsCodingScheme::EGPRS: |
| 237 | if (!m_current_cs_ul.isEgprs()) { |
| 238 | m_current_cs_ul = GprsCodingScheme::getEgprsByNum( |
| 239 | m_bts->bts_data()->initial_mcs_ul); |
Holger Hans Peter Freyther | fd263b0 | 2016-03-04 18:24:50 +0100 | [diff] [blame] | 240 | if (!m_current_cs_ul.isValid()) |
Holger Hans Peter Freyther | 99db40a | 2016-03-04 18:19:02 +0100 | [diff] [blame] | 241 | m_current_cs_ul = GprsCodingScheme::MCS1; |
| 242 | } |
| 243 | if (!m_current_cs_dl.isEgprs()) { |
| 244 | m_current_cs_dl = GprsCodingScheme::getEgprsByNum( |
| 245 | m_bts->bts_data()->initial_mcs_dl); |
| 246 | if (!m_current_cs_dl.isValid()) |
| 247 | m_current_cs_dl = GprsCodingScheme::MCS1; |
| 248 | } |
| 249 | break; |
| 250 | } |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 251 | } |
| 252 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 253 | void GprsMs::attach_tbf(struct gprs_rlcmac_tbf *tbf) |
| 254 | { |
| 255 | if (tbf->direction == GPRS_RLCMAC_DL_TBF) |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 256 | attach_dl_tbf(as_dl_tbf(tbf)); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 257 | else |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 258 | attach_ul_tbf(as_ul_tbf(tbf)); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | void GprsMs::attach_ul_tbf(struct gprs_rlcmac_ul_tbf *tbf) |
| 262 | { |
| 263 | if (m_ul_tbf == tbf) |
| 264 | return; |
| 265 | |
| 266 | LOGP(DRLCMAC, LOGL_INFO, "Attaching TBF to MS object, TLLI = 0x%08x, TBF = %s\n", |
| 267 | tlli(), tbf->name()); |
| 268 | |
| 269 | Guard guard(this); |
| 270 | |
| 271 | if (m_ul_tbf) |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 272 | llist_add_tail(&m_ul_tbf->ms_list(), &m_old_tbfs); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 273 | |
| 274 | m_ul_tbf = tbf; |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 275 | |
| 276 | if (tbf) |
| 277 | stop_timer(); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | void GprsMs::attach_dl_tbf(struct gprs_rlcmac_dl_tbf *tbf) |
| 281 | { |
| 282 | if (m_dl_tbf == tbf) |
| 283 | return; |
| 284 | |
| 285 | LOGP(DRLCMAC, LOGL_INFO, "Attaching TBF to MS object, TLLI = 0x%08x, TBF = %s\n", |
| 286 | tlli(), tbf->name()); |
| 287 | |
| 288 | Guard guard(this); |
| 289 | |
| 290 | if (m_dl_tbf) |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 291 | llist_add_tail(&m_dl_tbf->ms_list(), &m_old_tbfs); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 292 | |
| 293 | m_dl_tbf = tbf; |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 294 | |
| 295 | if (tbf) |
| 296 | stop_timer(); |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | void GprsMs::detach_tbf(gprs_rlcmac_tbf *tbf) |
| 300 | { |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 301 | if (tbf == static_cast<gprs_rlcmac_tbf *>(m_ul_tbf)) { |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 302 | m_ul_tbf = NULL; |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 303 | } else if (tbf == static_cast<gprs_rlcmac_tbf *>(m_dl_tbf)) { |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 304 | m_dl_tbf = NULL; |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 305 | } else { |
| 306 | bool found = false; |
| 307 | |
| 308 | LListHead<gprs_rlcmac_tbf> *pos, *tmp; |
| 309 | llist_for_each_safe(pos, tmp, &m_old_tbfs) { |
| 310 | if (pos->entry() == tbf) { |
| 311 | llist_del(pos); |
| 312 | found = true; |
| 313 | break; |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | /* Protect against recursive calls via set_ms() */ |
| 318 | if (!found) |
| 319 | return; |
| 320 | } |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 321 | |
| 322 | LOGP(DRLCMAC, LOGL_INFO, "Detaching TBF from MS object, TLLI = 0x%08x, TBF = %s\n", |
| 323 | tlli(), tbf->name()); |
| 324 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 325 | if (tbf->ms() == this) |
| 326 | tbf->set_ms(NULL); |
| 327 | |
Jacob Erlbeck | 23f93a1 | 2015-06-30 08:52:54 +0200 | [diff] [blame] | 328 | if (!m_dl_tbf && !m_ul_tbf) { |
| 329 | set_reserved_slots(NULL, 0, 0); |
| 330 | |
| 331 | if (tlli() != 0) |
| 332 | start_timer(); |
| 333 | } |
Jacob Erlbeck | d9e1024 | 2015-05-28 15:43:53 +0200 | [diff] [blame] | 334 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 335 | update_status(); |
| 336 | } |
| 337 | |
| 338 | void GprsMs::update_status() |
| 339 | { |
| 340 | if (m_ref > 0) |
| 341 | return; |
| 342 | |
| 343 | if (is_idle() && !m_is_idle) { |
| 344 | m_is_idle = true; |
| 345 | m_cb->ms_idle(this); |
| 346 | /* this can be deleted by now, do not access it */ |
| 347 | return; |
| 348 | } |
| 349 | |
| 350 | if (!is_idle() && m_is_idle) { |
| 351 | m_is_idle = false; |
| 352 | m_cb->ms_active(this); |
| 353 | } |
| 354 | } |
| 355 | |
Jacob Erlbeck | ac28905 | 2015-08-14 12:50:54 +0200 | [diff] [blame] | 356 | void GprsMs::reset() |
| 357 | { |
| 358 | LOGP(DRLCMAC, LOGL_INFO, |
| 359 | "Clearing MS object, TLLI: 0x%08x, IMSI: '%s'\n", |
| 360 | tlli(), imsi()); |
| 361 | |
| 362 | stop_timer(); |
| 363 | |
| 364 | m_tlli = 0; |
| 365 | m_new_dl_tlli = 0; |
| 366 | m_new_ul_tlli = 0; |
| 367 | m_imsi[0] = '\0'; |
| 368 | } |
| 369 | |
Jacob Erlbeck | 2b349b5 | 2015-08-18 11:55:03 +0200 | [diff] [blame] | 370 | void GprsMs::merge_old_ms(GprsMs *old_ms) |
| 371 | { |
| 372 | if (old_ms == this) |
| 373 | return; |
| 374 | |
| 375 | if (strlen(imsi()) == 0 && strlen(old_ms->imsi()) != 0) |
| 376 | set_imsi(old_ms->imsi()); |
| 377 | |
| 378 | if (!ms_class() && old_ms->ms_class()) |
| 379 | set_ms_class(old_ms->ms_class()); |
| 380 | |
Jacob Erlbeck | e0b21f4 | 2015-08-21 18:30:05 +0200 | [diff] [blame] | 381 | m_llc_queue.move_and_merge(&old_ms->m_llc_queue); |
| 382 | |
Jacob Erlbeck | 2b349b5 | 2015-08-18 11:55:03 +0200 | [diff] [blame] | 383 | old_ms->reset(); |
| 384 | } |
| 385 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 386 | void GprsMs::set_tlli(uint32_t tlli) |
| 387 | { |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 388 | if (tlli == m_tlli || tlli == m_new_ul_tlli) |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 389 | return; |
| 390 | |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 391 | if (tlli != m_new_dl_tlli) { |
| 392 | LOGP(DRLCMAC, LOGL_INFO, |
| 393 | "Modifying MS object, UL TLLI: 0x%08x -> 0x%08x, " |
| 394 | "not yet confirmed\n", |
| 395 | this->tlli(), tlli); |
| 396 | m_new_ul_tlli = tlli; |
| 397 | return; |
| 398 | } |
| 399 | |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 400 | LOGP(DRLCMAC, LOGL_INFO, |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 401 | "Modifying MS object, TLLI: 0x%08x -> 0x%08x, " |
| 402 | "already confirmed partly\n", |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 403 | m_tlli, tlli); |
| 404 | |
| 405 | m_tlli = tlli; |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 406 | m_new_dl_tlli = 0; |
| 407 | m_new_ul_tlli = 0; |
| 408 | } |
| 409 | |
| 410 | bool GprsMs::confirm_tlli(uint32_t tlli) |
| 411 | { |
| 412 | if (tlli == m_tlli || tlli == m_new_dl_tlli) |
| 413 | return false; |
| 414 | |
| 415 | if (tlli != m_new_ul_tlli) { |
| 416 | /* The MS has not sent a message with the new TLLI, which may |
| 417 | * happen according to the spec [TODO: add reference]. */ |
| 418 | |
| 419 | LOGP(DRLCMAC, LOGL_INFO, |
| 420 | "The MS object cannot fully confirm an unexpected TLLI: 0x%08x, " |
| 421 | "partly confirmed\n", tlli); |
| 422 | /* Use the network's idea of TLLI as candidate, this does not |
| 423 | * change the result value of tlli() */ |
| 424 | m_new_dl_tlli = tlli; |
| 425 | return false; |
| 426 | } |
| 427 | |
| 428 | LOGP(DRLCMAC, LOGL_INFO, |
| 429 | "Modifying MS object, TLLI: 0x%08x confirmed\n", tlli); |
| 430 | |
| 431 | m_tlli = tlli; |
| 432 | m_new_dl_tlli = 0; |
| 433 | m_new_ul_tlli = 0; |
| 434 | |
| 435 | return true; |
Jacob Erlbeck | e04e0b0 | 2015-05-06 18:30:48 +0200 | [diff] [blame] | 436 | } |
Jacob Erlbeck | b0e5eaf | 2015-05-21 11:07:16 +0200 | [diff] [blame] | 437 | |
| 438 | void GprsMs::set_imsi(const char *imsi) |
| 439 | { |
| 440 | if (!imsi) { |
| 441 | LOGP(DRLCMAC, LOGL_ERROR, "Expected IMSI!\n"); |
| 442 | return; |
| 443 | } |
| 444 | |
| 445 | if (imsi[0] && strlen(imsi) < 3) { |
| 446 | LOGP(DRLCMAC, LOGL_ERROR, "No valid IMSI '%s'!\n", |
| 447 | imsi); |
| 448 | return; |
| 449 | } |
| 450 | |
| 451 | if (strcmp(imsi, m_imsi) == 0) |
| 452 | return; |
| 453 | |
| 454 | LOGP(DRLCMAC, LOGL_INFO, |
| 455 | "Modifying MS object, TLLI = 0x%08x, IMSI '%s' -> '%s'\n", |
| 456 | tlli(), m_imsi, imsi); |
| 457 | |
| 458 | strncpy(m_imsi, imsi, sizeof(m_imsi)); |
| 459 | m_imsi[sizeof(m_imsi) - 1] = '\0'; |
| 460 | } |
| 461 | |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 462 | void GprsMs::set_ta(uint8_t ta_) |
| 463 | { |
| 464 | if (ta_ == m_ta) |
| 465 | return; |
| 466 | |
| 467 | LOGP(DRLCMAC, LOGL_INFO, |
| 468 | "Modifying MS object, TLLI = 0x%08x, TA %d -> %d\n", |
| 469 | tlli(), m_ta, ta_); |
| 470 | |
| 471 | m_ta = ta_; |
| 472 | } |
| 473 | |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 474 | void GprsMs::set_ms_class(uint8_t ms_class_) |
| 475 | { |
| 476 | if (ms_class_ == m_ms_class) |
| 477 | return; |
| 478 | |
| 479 | LOGP(DRLCMAC, LOGL_INFO, |
| 480 | "Modifying MS object, TLLI = 0x%08x, MS class %d -> %d\n", |
| 481 | tlli(), m_ms_class, ms_class_); |
| 482 | |
| 483 | m_ms_class = ms_class_; |
| 484 | } |
| 485 | |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 486 | void GprsMs::set_egprs_ms_class(uint8_t ms_class_) |
| 487 | { |
| 488 | if (ms_class_ == m_egprs_ms_class) |
| 489 | return; |
| 490 | |
| 491 | LOGP(DRLCMAC, LOGL_INFO, |
| 492 | "Modifying MS object, TLLI = 0x%08x, EGPRS MS class %d -> %d\n", |
| 493 | tlli(), m_egprs_ms_class, ms_class_); |
| 494 | |
| 495 | m_egprs_ms_class = ms_class_; |
| 496 | } |
| 497 | |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 498 | void GprsMs::update_error_rate(gprs_rlcmac_tbf *tbf, int error_rate) |
| 499 | { |
| 500 | struct gprs_rlcmac_bts *bts_data; |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 501 | int64_t now; |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 502 | GprsCodingScheme max_cs_dl = this->max_cs_dl(); |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 503 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 504 | OSMO_ASSERT(max_cs_dl); |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 505 | bts_data = m_bts->bts_data(); |
| 506 | |
| 507 | if (error_rate < 0) |
| 508 | return; |
| 509 | |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 510 | now = now_msec(); |
| 511 | |
Jacob Erlbeck | 94cde13 | 2015-06-09 09:44:36 +0200 | [diff] [blame] | 512 | /* TODO: Check for TBF direction */ |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 513 | /* TODO: Support different CS values for UL and DL */ |
| 514 | |
Jacob Erlbeck | 04a1086 | 2015-06-12 16:01:56 +0200 | [diff] [blame] | 515 | m_nack_rate_dl = error_rate; |
| 516 | |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 517 | if (error_rate > bts_data->cs_adj_upper_limit) { |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 518 | if (m_current_cs_dl.to_num() > 1) { |
| 519 | m_current_cs_dl.dec(mode()); |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 520 | LOGP(DRLCMACDL, LOGL_INFO, |
| 521 | "MS (IMSI %s): High error rate %d%%, " |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 522 | "reducing CS level to %s\n", |
| 523 | imsi(), error_rate, m_current_cs_dl.name()); |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 524 | m_last_cs_not_low = now; |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 525 | } |
| 526 | } else if (error_rate < bts_data->cs_adj_lower_limit) { |
Jacob Erlbeck | b33e675 | 2015-06-04 19:04:30 +0200 | [diff] [blame] | 527 | if (m_current_cs_dl < max_cs_dl) { |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 528 | if (now - m_last_cs_not_low > 1000) { |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 529 | m_current_cs_dl.inc(mode()); |
Jacob Erlbeck | b33e675 | 2015-06-04 19:04:30 +0200 | [diff] [blame] | 530 | |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 531 | LOGP(DRLCMACDL, LOGL_INFO, |
| 532 | "MS (IMSI %s): Low error rate %d%%, " |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 533 | "increasing DL CS level to %s\n", |
| 534 | imsi(), error_rate, |
| 535 | m_current_cs_dl.name()); |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 536 | m_last_cs_not_low = now; |
| 537 | } else { |
| 538 | LOGP(DRLCMACDL, LOGL_DEBUG, |
| 539 | "MS (IMSI %s): Low error rate %d%%, " |
| 540 | "ignored (within blocking period)\n", |
| 541 | imsi(), error_rate); |
| 542 | } |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 543 | } |
| 544 | } else { |
| 545 | LOGP(DRLCMACDL, LOGL_DEBUG, |
| 546 | "MS (IMSI %s): Medium error rate %d%%, ignored\n", |
| 547 | imsi(), error_rate); |
Jacob Erlbeck | 8158ea7 | 2015-06-04 17:46:33 +0200 | [diff] [blame] | 548 | m_last_cs_not_low = now; |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 549 | } |
| 550 | } |
Jacob Erlbeck | e4bcb62 | 2015-06-08 11:26:38 +0200 | [diff] [blame] | 551 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 552 | GprsCodingScheme GprsMs::max_cs_ul() const |
Jacob Erlbeck | e4bcb62 | 2015-06-08 11:26:38 +0200 | [diff] [blame] | 553 | { |
Jacob Erlbeck | 94cde13 | 2015-06-09 09:44:36 +0200 | [diff] [blame] | 554 | struct gprs_rlcmac_bts *bts_data; |
Jacob Erlbeck | 94cde13 | 2015-06-09 09:44:36 +0200 | [diff] [blame] | 555 | |
| 556 | OSMO_ASSERT(m_bts != NULL); |
| 557 | bts_data = m_bts->bts_data(); |
| 558 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 559 | if (m_current_cs_ul.isGprs()) { |
| 560 | if (!bts_data->max_cs_ul) |
| 561 | return GprsCodingScheme(GprsCodingScheme::CS4); |
Jacob Erlbeck | 94cde13 | 2015-06-09 09:44:36 +0200 | [diff] [blame] | 562 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 563 | return GprsCodingScheme::getGprsByNum(bts_data->max_cs_ul); |
Jacob Erlbeck | 94cde13 | 2015-06-09 09:44:36 +0200 | [diff] [blame] | 564 | } |
| 565 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 566 | if (!m_current_cs_ul.isEgprs()) |
| 567 | return GprsCodingScheme(); /* UNKNOWN */ |
| 568 | |
| 569 | if (bts_data->max_mcs_ul) |
| 570 | return GprsCodingScheme::getEgprsByNum(bts_data->max_mcs_ul); |
| 571 | else if (bts_data->max_cs_ul) |
| 572 | return GprsCodingScheme::getEgprsByNum(bts_data->max_cs_ul); |
| 573 | |
| 574 | return GprsCodingScheme(GprsCodingScheme::MCS4); |
| 575 | } |
| 576 | |
| 577 | GprsCodingScheme GprsMs::max_cs_dl() const |
| 578 | { |
| 579 | struct gprs_rlcmac_bts *bts_data; |
| 580 | |
| 581 | OSMO_ASSERT(m_bts != NULL); |
| 582 | bts_data = m_bts->bts_data(); |
| 583 | |
| 584 | if (m_current_cs_dl.isGprs()) { |
| 585 | if (!bts_data->max_cs_dl) |
| 586 | return GprsCodingScheme(GprsCodingScheme::CS4); |
| 587 | |
| 588 | return GprsCodingScheme::getGprsByNum(bts_data->max_cs_dl); |
| 589 | } |
| 590 | |
| 591 | if (!m_current_cs_dl.isEgprs()) |
| 592 | return GprsCodingScheme(); /* UNKNOWN */ |
| 593 | |
| 594 | if (bts_data->max_mcs_dl) |
| 595 | return GprsCodingScheme::getEgprsByNum(bts_data->max_mcs_dl); |
| 596 | else if (bts_data->max_cs_dl) |
| 597 | return GprsCodingScheme::getEgprsByNum(bts_data->max_cs_dl); |
| 598 | |
| 599 | return GprsCodingScheme(GprsCodingScheme::MCS4); |
| 600 | } |
| 601 | |
| 602 | void GprsMs::update_cs_ul(const pcu_l1_meas *meas) |
| 603 | { |
| 604 | struct gprs_rlcmac_bts *bts_data; |
| 605 | GprsCodingScheme max_cs_ul = this->max_cs_ul(); |
| 606 | |
| 607 | int old_link_qual; |
| 608 | int low; |
| 609 | int high; |
| 610 | GprsCodingScheme new_cs_ul = m_current_cs_ul; |
| 611 | unsigned current_cs_num = m_current_cs_ul.to_num(); |
| 612 | |
| 613 | bts_data = m_bts->bts_data(); |
| 614 | |
| 615 | if (!max_cs_ul) { |
| 616 | LOGP(DRLCMACDL, LOGL_ERROR, |
| 617 | "max_cs_ul cannot be derived (current UL CS: %s)\n", |
| 618 | m_current_cs_ul.name()); |
| 619 | return; |
| 620 | } |
| 621 | |
| 622 | if (!m_current_cs_ul) |
| 623 | return; |
| 624 | |
| 625 | if (!meas->have_link_qual) |
| 626 | return; |
| 627 | |
| 628 | old_link_qual = meas->link_qual; |
| 629 | |
| 630 | if (m_current_cs_ul.isGprs()) { |
| 631 | low = bts_data->cs_lqual_ranges[current_cs_num-1].low; |
| 632 | high = bts_data->cs_lqual_ranges[current_cs_num-1].high; |
| 633 | } else if (m_current_cs_ul.isEgprs()) { |
| 634 | /* TODO, use separate table */ |
| 635 | if (current_cs_num > 4) |
| 636 | current_cs_num = 4; |
| 637 | low = bts_data->cs_lqual_ranges[current_cs_num-1].low; |
| 638 | high = bts_data->cs_lqual_ranges[current_cs_num-1].high; |
| 639 | } else { |
| 640 | return; |
| 641 | } |
| 642 | |
| 643 | if (m_l1_meas.have_link_qual) |
| 644 | old_link_qual = m_l1_meas.link_qual; |
| 645 | |
| 646 | if (meas->link_qual < low && old_link_qual < low) |
| 647 | new_cs_ul.dec(mode()); |
| 648 | else if (meas->link_qual > high && old_link_qual > high && |
| 649 | m_current_cs_ul < max_cs_ul) |
| 650 | new_cs_ul.inc(mode()); |
| 651 | |
| 652 | if (m_current_cs_ul != new_cs_ul) { |
| 653 | LOGP(DRLCMACDL, LOGL_INFO, |
| 654 | "MS (IMSI %s): " |
| 655 | "Link quality %ddB (%ddB) left window [%d, %d], " |
| 656 | "modifying uplink CS level: %s -> %s\n", |
| 657 | imsi(), meas->link_qual, old_link_qual, |
| 658 | low, high, |
| 659 | m_current_cs_ul.name(), new_cs_ul.name()); |
| 660 | |
| 661 | m_current_cs_ul = new_cs_ul; |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | void GprsMs::update_l1_meas(const pcu_l1_meas *meas) |
| 666 | { |
| 667 | unsigned i; |
| 668 | |
| 669 | update_cs_ul(meas); |
| 670 | |
Jacob Erlbeck | e4bcb62 | 2015-06-08 11:26:38 +0200 | [diff] [blame] | 671 | if (meas->have_rssi) |
| 672 | m_l1_meas.set_rssi(meas->rssi); |
| 673 | if (meas->have_bto) |
| 674 | m_l1_meas.set_bto(meas->bto); |
| 675 | if (meas->have_ber) |
| 676 | m_l1_meas.set_ber(meas->ber); |
| 677 | if (meas->have_link_qual) |
| 678 | m_l1_meas.set_link_qual(meas->link_qual); |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 679 | |
| 680 | if (meas->have_ms_rx_qual) |
| 681 | m_l1_meas.set_ms_rx_qual(meas->ms_rx_qual); |
| 682 | if (meas->have_ms_c_value) |
| 683 | m_l1_meas.set_ms_c_value(meas->ms_c_value); |
| 684 | if (meas->have_ms_sign_var) |
| 685 | m_l1_meas.set_ms_sign_var(meas->ms_sign_var); |
| 686 | |
| 687 | if (meas->have_ms_i_level) { |
| 688 | for (i = 0; i < ARRAY_SIZE(meas->ts); ++i) { |
| 689 | if (meas->ts[i].have_ms_i_level) |
| 690 | m_l1_meas.set_ms_i_level(i, meas->ts[i].ms_i_level); |
| 691 | else |
| 692 | m_l1_meas.ts[i].have_ms_i_level = 0; |
| 693 | } |
| 694 | } |
Jacob Erlbeck | e4bcb62 | 2015-06-08 11:26:38 +0200 | [diff] [blame] | 695 | } |
Jacob Erlbeck | 70b96aa | 2015-06-12 10:52:34 +0200 | [diff] [blame] | 696 | |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 697 | GprsCodingScheme GprsMs::current_cs_dl() const |
Jacob Erlbeck | 70b96aa | 2015-06-12 10:52:34 +0200 | [diff] [blame] | 698 | { |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 699 | GprsCodingScheme cs = m_current_cs_dl; |
Jacob Erlbeck | 70b96aa | 2015-06-12 10:52:34 +0200 | [diff] [blame] | 700 | size_t unencoded_octets; |
| 701 | |
| 702 | if (!m_bts) |
| 703 | return cs; |
| 704 | |
| 705 | unencoded_octets = m_llc_queue.octets(); |
| 706 | |
| 707 | /* If the DL TBF is active, add number of unencoded chunk octets */ |
| 708 | if (m_dl_tbf) |
Jacob Erlbeck | 14e26cb | 2016-02-03 15:26:29 +0100 | [diff] [blame] | 709 | unencoded_octets += m_dl_tbf->m_llc.chunk_size(); |
Jacob Erlbeck | 70b96aa | 2015-06-12 10:52:34 +0200 | [diff] [blame] | 710 | |
| 711 | /* There are many unencoded octets, don't reduce */ |
| 712 | if (unencoded_octets >= m_bts->bts_data()->cs_downgrade_threshold) |
| 713 | return cs; |
| 714 | |
| 715 | /* RF conditions are good, don't reduce */ |
| 716 | if (m_nack_rate_dl < m_bts->bts_data()->cs_adj_lower_limit) |
| 717 | return cs; |
| 718 | |
| 719 | /* The throughput would probably be better if the CS level was reduced */ |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 720 | cs.dec(mode()); |
Jacob Erlbeck | 70b96aa | 2015-06-12 10:52:34 +0200 | [diff] [blame] | 721 | |
| 722 | /* CS-2 doesn't gain throughput with small packets, further reduce to CS-1 */ |
Jacob Erlbeck | cb72890 | 2016-01-05 15:33:03 +0100 | [diff] [blame] | 723 | if (cs == GprsCodingScheme(GprsCodingScheme::CS2)) |
| 724 | cs.dec(mode()); |
Jacob Erlbeck | 70b96aa | 2015-06-12 10:52:34 +0200 | [diff] [blame] | 725 | |
| 726 | return cs; |
| 727 | } |
| 728 | |
Jacob Erlbeck | 699b8dc | 2015-06-29 14:05:55 +0200 | [diff] [blame] | 729 | int GprsMs::first_common_ts() const |
| 730 | { |
| 731 | if (m_dl_tbf) |
| 732 | return m_dl_tbf->first_common_ts; |
| 733 | |
| 734 | if (m_ul_tbf) |
| 735 | return m_ul_tbf->first_common_ts; |
| 736 | |
| 737 | return -1; |
| 738 | } |
| 739 | |
Jacob Erlbeck | 617c712 | 2015-06-30 09:18:30 +0200 | [diff] [blame] | 740 | uint8_t GprsMs::dl_slots() const |
| 741 | { |
| 742 | uint8_t slots = 0; |
| 743 | |
| 744 | if (m_dl_tbf) |
| 745 | slots |= m_dl_tbf->dl_slots(); |
| 746 | |
| 747 | if (m_ul_tbf) |
| 748 | slots |= m_ul_tbf->dl_slots(); |
| 749 | |
| 750 | return slots; |
| 751 | } |
| 752 | |
| 753 | uint8_t GprsMs::ul_slots() const |
| 754 | { |
| 755 | uint8_t slots = 0; |
| 756 | |
| 757 | if (m_dl_tbf) |
| 758 | slots |= m_dl_tbf->ul_slots(); |
| 759 | |
| 760 | if (m_ul_tbf) |
| 761 | slots |= m_ul_tbf->ul_slots(); |
| 762 | |
| 763 | return slots; |
| 764 | } |
| 765 | |
Jacob Erlbeck | 7c72aca | 2016-01-22 17:06:14 +0100 | [diff] [blame] | 766 | uint8_t GprsMs::current_pacch_slots() const |
| 767 | { |
| 768 | uint8_t slots = 0; |
| 769 | |
| 770 | bool is_dl_active = m_dl_tbf && m_dl_tbf->is_tfi_assigned(); |
| 771 | bool is_ul_active = m_ul_tbf && m_ul_tbf->is_tfi_assigned(); |
| 772 | |
| 773 | if (!is_dl_active && !is_ul_active) |
| 774 | return 0; |
| 775 | |
| 776 | /* see TS 44.060, 8.1.1.2.2 */ |
| 777 | if (is_dl_active && !is_ul_active) |
| 778 | slots = m_dl_tbf->dl_slots(); |
| 779 | else if (!is_dl_active && is_ul_active) |
| 780 | slots = m_ul_tbf->ul_slots(); |
| 781 | else |
| 782 | slots = m_ul_tbf->ul_slots() & m_dl_tbf->dl_slots(); |
| 783 | |
| 784 | /* Assume a multislot class 1 device */ |
| 785 | /* TODO: For class 2 devices, this could be removed */ |
| 786 | slots = pcu_lsb(slots); |
| 787 | |
| 788 | return slots; |
| 789 | } |
| 790 | |
Jacob Erlbeck | 23f93a1 | 2015-06-30 08:52:54 +0200 | [diff] [blame] | 791 | void GprsMs::set_reserved_slots(gprs_rlcmac_trx *trx, |
| 792 | uint8_t ul_slots, uint8_t dl_slots) |
| 793 | { |
| 794 | if (m_current_trx) { |
| 795 | m_current_trx->unreserve_slots(GPRS_RLCMAC_DL_TBF, |
| 796 | m_reserved_dl_slots); |
| 797 | m_current_trx->unreserve_slots(GPRS_RLCMAC_UL_TBF, |
| 798 | m_reserved_ul_slots); |
| 799 | m_reserved_dl_slots = 0; |
| 800 | m_reserved_ul_slots = 0; |
| 801 | } |
| 802 | m_current_trx = trx; |
| 803 | if (trx) { |
| 804 | m_reserved_dl_slots = dl_slots; |
| 805 | m_reserved_ul_slots = ul_slots; |
| 806 | m_current_trx->reserve_slots(GPRS_RLCMAC_DL_TBF, |
| 807 | m_reserved_dl_slots); |
| 808 | m_current_trx->reserve_slots(GPRS_RLCMAC_UL_TBF, |
| 809 | m_reserved_ul_slots); |
| 810 | } |
| 811 | } |
| 812 | |
Jacob Erlbeck | ac89a55 | 2015-06-29 14:18:46 +0200 | [diff] [blame] | 813 | gprs_rlcmac_tbf *GprsMs::tbf(enum gprs_rlcmac_tbf_direction dir) const |
| 814 | { |
| 815 | switch (dir) { |
| 816 | case GPRS_RLCMAC_DL_TBF: return m_dl_tbf; |
| 817 | case GPRS_RLCMAC_UL_TBF: return m_ul_tbf; |
| 818 | } |
| 819 | |
| 820 | return NULL; |
| 821 | } |