Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 3 | * |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU Affero General Public License as published by |
| 8 | * the Free Software Foundation; either version 3 of the License, or |
| 9 | * (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 Affero General Public License |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #include <bts.h> |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 22 | #include <poll_controller.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 23 | #include <tbf.h> |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 24 | #include <encoding.h> |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 25 | #include <decoding.h> |
| 26 | #include <rlc.h> |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 27 | #include <pcu_l1_if.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 28 | |
| 29 | #include <gprs_rlcmac.h> |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 30 | #include <gprs_debug.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 31 | |
| 32 | extern "C" { |
| 33 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 34 | #include <osmocom/core/msgb.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 35 | } |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 36 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 37 | #include <arpa/inet.h> |
| 38 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 39 | #include <errno.h> |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 40 | #include <string.h> |
| 41 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 42 | extern void *tall_pcu_ctx; |
| 43 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 44 | static BTS s_bts; |
| 45 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 46 | /** |
| 47 | * For gcc-4.4 compat do not use extended initializer list but keep the |
| 48 | * order from the enum here. Once we support GCC4.7 and up we can change |
| 49 | * the code below. |
| 50 | */ |
| 51 | static const struct rate_ctr_desc bts_ctr_description[] = { |
| 52 | { "tbf.dl.alloc", "TBF DL Allocated "}, |
| 53 | { "tbf.dl.freed", "TBF DL Freed "}, |
| 54 | { "tbf.ul.alloc", "TBF UL Allocated "}, |
| 55 | { "tbf.ul.freed", "TBF UL Freed "}, |
Holger Hans Peter Freyther | aa35ba7 | 2013-11-13 15:02:50 +0100 | [diff] [blame] | 56 | { "tbf.reused", "TBF Reused "}, |
Jacob Erlbeck | 5979fe9 | 2015-07-14 14:02:41 +0200 | [diff] [blame] | 57 | { "tbf.alloc.algo-a", "TBF Alloc Algo A "}, |
| 58 | { "tbf.alloc.algo-b", "TBF Alloc Algo B "}, |
Holger Hans Peter Freyther | e9429b5 | 2013-11-13 19:36:57 +0100 | [diff] [blame] | 59 | { "rlc.sent", "RLC Sent "}, |
| 60 | { "rlc.resent", "RLC Resent "}, |
Holger Hans Peter Freyther | ef93bdb | 2013-11-24 00:01:50 +0100 | [diff] [blame] | 61 | { "rlc.restarted", "RLC Restarted "}, |
Holger Hans Peter Freyther | c70aae4 | 2013-11-19 17:09:37 +0100 | [diff] [blame] | 62 | { "rlc.stalled", "RLC Stalled "}, |
Holger Hans Peter Freyther | 092478f | 2013-11-23 01:01:19 +0100 | [diff] [blame] | 63 | { "rlc.nacked", "RLC Nacked "}, |
Jacob Erlbeck | c91c18e | 2015-07-07 09:33:29 +0200 | [diff] [blame] | 64 | { "rlc.ass.timedout", "RLC Assign Timeout "}, |
| 65 | { "rlc.ack.timedout", "RLC Ack Timeout "}, |
| 66 | { "rlc.rel.timedout", "RLC Release Timeout "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 67 | { "decode.errors", "Decode Errors "}, |
Holger Hans Peter Freyther | 93e048f | 2013-10-27 10:00:47 +0100 | [diff] [blame] | 68 | { "sba.allocated", "SBA Allocated "}, |
| 69 | { "sba.freed", "SBA Freed "}, |
| 70 | { "sba.timedout", "SBA Timeout "}, |
Holger Hans Peter Freyther | 1997787 | 2013-10-27 10:34:31 +0100 | [diff] [blame] | 71 | { "llc.timeout", "Timedout Frames "}, |
| 72 | { "llc.dropped", "Dropped Frames "}, |
Holger Hans Peter Freyther | b3d5ee2 | 2013-11-13 16:43:26 +0100 | [diff] [blame] | 73 | { "llc.scheduled", "Scheduled Frames "}, |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 74 | { "rach.requests", "RACH requests "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 75 | }; |
| 76 | |
| 77 | static const struct rate_ctr_group_desc bts_ctrg_desc = { |
| 78 | "bts", |
| 79 | "BTS Statistics", |
| 80 | ARRAY_SIZE(bts_ctr_description), |
| 81 | bts_ctr_description, |
| 82 | }; |
| 83 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 84 | BTS* BTS::main_bts() |
| 85 | { |
| 86 | return &s_bts; |
| 87 | } |
| 88 | |
| 89 | struct gprs_rlcmac_bts *BTS::bts_data() |
| 90 | { |
| 91 | return &m_bts; |
| 92 | } |
| 93 | |
| 94 | struct gprs_rlcmac_bts *bts_main_data() |
| 95 | { |
| 96 | return BTS::main_bts()->bts_data(); |
| 97 | } |
| 98 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 99 | struct rate_ctr_group *bts_main_data_stats() |
| 100 | { |
| 101 | return BTS::main_bts()->rate_counters(); |
| 102 | } |
| 103 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 104 | BTS::BTS() |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 105 | : m_cur_fn(0) |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 106 | , m_pollController(*this) |
Holger Hans Peter Freyther | cedf890 | 2013-10-19 20:47:12 +0200 | [diff] [blame] | 107 | , m_sba(*this) |
Jacob Erlbeck | 17214bb | 2015-06-02 14:06:12 +0200 | [diff] [blame] | 108 | , m_ms_store(this) |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 109 | { |
| 110 | memset(&m_bts, 0, sizeof(m_bts)); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 111 | INIT_LLIST_HEAD(&m_bts.ul_tbfs); |
| 112 | INIT_LLIST_HEAD(&m_bts.dl_tbfs); |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 113 | m_bts.bts = this; |
Holger Hans Peter Freyther | 4ed1dae | 2013-10-20 10:14:03 +0200 | [diff] [blame] | 114 | |
| 115 | /* initialize back pointers */ |
| 116 | for (size_t trx_no = 0; trx_no < ARRAY_SIZE(m_bts.trx); ++trx_no) { |
| 117 | struct gprs_rlcmac_trx *trx = &m_bts.trx[trx_no]; |
| 118 | trx->trx_no = trx_no; |
| 119 | trx->bts = this; |
| 120 | |
| 121 | for (size_t ts_no = 0; ts_no < ARRAY_SIZE(trx->pdch); ++ts_no) { |
| 122 | struct gprs_rlcmac_pdch *pdch = &trx->pdch[ts_no]; |
| 123 | pdch->ts_no = ts_no; |
| 124 | pdch->trx = trx; |
| 125 | } |
| 126 | } |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 127 | |
| 128 | m_ratectrs = rate_ctr_group_alloc(tall_pcu_ctx, &bts_ctrg_desc, 0); |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 129 | } |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 130 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 131 | BTS::~BTS() |
| 132 | { |
| 133 | rate_ctr_group_free(m_ratectrs); |
| 134 | } |
| 135 | |
| 136 | |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 137 | void BTS::set_current_frame_number(int fn) |
| 138 | { |
| 139 | m_cur_fn = fn; |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 140 | m_pollController.expireTimedout(m_cur_fn); |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 141 | } |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 142 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 143 | int BTS::add_paging(uint8_t chan_needed, uint8_t *identity_lv) |
| 144 | { |
| 145 | uint8_t l, trx, ts, any_tbf = 0; |
| 146 | struct gprs_rlcmac_tbf *tbf; |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 147 | struct llist_pods *lpods; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 148 | struct gprs_rlcmac_paging *pag; |
| 149 | uint8_t slot_mask[8]; |
| 150 | int8_t first_ts; /* must be signed */ |
| 151 | |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 152 | llist_head *tbfs_lists[] = { |
| 153 | &m_bts.ul_tbfs, |
| 154 | &m_bts.dl_tbfs, |
| 155 | NULL |
| 156 | }; |
| 157 | |
| 158 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 159 | LOGP(DRLCMAC, LOGL_INFO, "Add RR paging: chan-needed=%d MI=%s\n", |
| 160 | chan_needed, osmo_hexdump(identity_lv + 1, identity_lv[0])); |
| 161 | |
| 162 | /* collect slots to page |
| 163 | * Mark slots for every TBF, but only mark one of it. |
| 164 | * Mark only the first slot found. |
| 165 | * Don't mark, if TBF uses a different slot that is already marked. */ |
| 166 | memset(slot_mask, 0, sizeof(slot_mask)); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 167 | for (l = 0; tbfs_lists[l]; l++) { |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 168 | llist_pods_for_each_entry(tbf, tbfs_lists[l], list, lpods) { |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 169 | first_ts = -1; |
| 170 | for (ts = 0; ts < 8; ts++) { |
| 171 | if (tbf->pdch[ts]) { |
| 172 | /* remember the first slot found */ |
| 173 | if (first_ts < 0) |
| 174 | first_ts = ts; |
| 175 | /* break, if we already marked a slot */ |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 176 | if ((slot_mask[tbf->trx->trx_no] & (1 << ts))) |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 177 | break; |
| 178 | } |
| 179 | } |
| 180 | /* mark first slot found, if none is marked already */ |
| 181 | if (ts == 8 && first_ts >= 0) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 182 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s uses " |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 183 | "TRX=%d TS=%d, so we mark\n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 184 | tbf_name(tbf), |
| 185 | tbf->trx->trx_no, first_ts); |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 186 | slot_mask[tbf->trx->trx_no] |= (1 << first_ts); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 187 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 188 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s uses " |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 189 | "already marked TRX=%d TS=%d\n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 190 | tbf_name(tbf), |
| 191 | tbf->trx->trx_no, ts); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 192 | } |
| 193 | } |
| 194 | |
| 195 | /* Now we have a list of marked slots. Every TBF uses at least one |
| 196 | * of these slots. */ |
| 197 | |
| 198 | /* schedule paging to all marked slots */ |
| 199 | for (trx = 0; trx < 8; trx++) { |
| 200 | if (slot_mask[trx] == 0) |
| 201 | continue; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 202 | for (ts = 0; ts < 8; ts++) { |
| 203 | if ((slot_mask[trx] & (1 << ts))) { |
| 204 | /* schedule */ |
| 205 | pag = talloc_zero(tall_pcu_ctx, |
| 206 | struct gprs_rlcmac_paging); |
| 207 | if (!pag) |
| 208 | return -ENOMEM; |
| 209 | pag->chan_needed = chan_needed; |
| 210 | memcpy(pag->identity_lv, identity_lv, |
| 211 | identity_lv[0] + 1); |
| 212 | m_bts.trx[trx].pdch[ts].add_paging(pag); |
| 213 | LOGP(DRLCMAC, LOGL_INFO, "Paging on PACCH of " |
| 214 | "TRX=%d TS=%d\n", trx, ts); |
Holger Hans Peter Freyther | 9446485 | 2013-10-19 18:33:52 +0200 | [diff] [blame] | 215 | any_tbf = 1; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 216 | } |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | if (!any_tbf) |
| 221 | LOGP(DRLCMAC, LOGL_INFO, "No paging, because no TBF\n"); |
| 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 226 | gprs_rlcmac_dl_tbf *BTS::dl_tbf_by_poll_fn(uint32_t fn, uint8_t trx, uint8_t ts) |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 227 | { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 228 | struct gprs_rlcmac_dl_tbf *tbf; |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 229 | struct llist_pods *lpods; |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 230 | |
| 231 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 232 | * schedule one downlink control block (with polling) at a FN per TS */ |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 233 | llist_pods_for_each_entry(tbf, &m_bts.dl_tbfs, list, lpods) { |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 234 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 235 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 236 | && tbf->poll_fn == fn && tbf->trx->trx_no == trx |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 237 | && tbf->control_ts == ts) { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 238 | return static_cast<gprs_rlcmac_dl_tbf *>(tbf); |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 239 | } |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 240 | } |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 241 | return NULL; |
| 242 | } |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 243 | gprs_rlcmac_ul_tbf *BTS::ul_tbf_by_poll_fn(uint32_t fn, uint8_t trx, uint8_t ts) |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 244 | { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 245 | struct gprs_rlcmac_ul_tbf *tbf; |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 246 | struct llist_pods *lpods; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 247 | |
| 248 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 249 | * schedule one downlink control block (with polling) at a FN per TS */ |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 250 | llist_pods_for_each_entry(tbf, &m_bts.ul_tbfs, list, lpods) { |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 251 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 252 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 253 | && tbf->poll_fn == fn && tbf->trx->trx_no == trx |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 254 | && tbf->control_ts == ts) { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 255 | return static_cast<gprs_rlcmac_ul_tbf *>(tbf); |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 256 | } |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 257 | } |
| 258 | return NULL; |
| 259 | } |
| 260 | |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 261 | /* lookup downlink TBF Entity (by TFI) */ |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 262 | gprs_rlcmac_dl_tbf *BTS::dl_tbf_by_tfi(uint8_t tfi, uint8_t trx, uint8_t ts) |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 263 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 264 | if (trx >= 8 || ts >= 8) |
| 265 | return NULL; |
| 266 | |
| 267 | return m_bts.trx[trx].pdch[ts].dl_tbf_by_tfi(tfi); |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | /* lookup uplink TBF Entity (by TFI) */ |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 271 | gprs_rlcmac_ul_tbf *BTS::ul_tbf_by_tfi(uint8_t tfi, uint8_t trx, uint8_t ts) |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 272 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 273 | if (trx >= 8 || ts >= 8) |
Holger Hans Peter Freyther | f63cabd | 2013-10-26 19:10:43 +0200 | [diff] [blame] | 274 | return NULL; |
| 275 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 276 | return m_bts.trx[trx].pdch[ts].ul_tbf_by_tfi(tfi); |
Holger Hans Peter Freyther | f63cabd | 2013-10-26 19:10:43 +0200 | [diff] [blame] | 277 | } |
| 278 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 279 | /* |
| 280 | * Search for free TFI and return TFI, TRX. |
| 281 | * This method returns the first TFI that is currently not used in any PDCH of |
| 282 | * a TRX. The first TRX that contains such an TFI is returned. Negative values |
| 283 | * indicate errors. |
| 284 | */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 285 | int BTS::tfi_find_free(enum gprs_rlcmac_tbf_direction dir, |
| 286 | uint8_t *_trx, int8_t use_trx) |
| 287 | { |
| 288 | struct gprs_rlcmac_pdch *pdch; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 289 | uint32_t free_tfis; |
| 290 | bool has_pdch = false; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 291 | uint8_t trx_from, trx_to, trx, ts, tfi; |
| 292 | |
| 293 | if (use_trx >= 0 && use_trx < 8) |
| 294 | trx_from = trx_to = use_trx; |
| 295 | else { |
| 296 | trx_from = 0; |
| 297 | trx_to = 7; |
| 298 | } |
| 299 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 300 | /* find a TFI that is unused on all PDCH */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 301 | for (trx = trx_from; trx <= trx_to; trx++) { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 302 | bool trx_has_pdch = false; |
| 303 | |
| 304 | free_tfis = 0xffffffff; |
| 305 | |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 306 | for (ts = 0; ts < 8; ts++) { |
| 307 | pdch = &m_bts.trx[trx].pdch[ts]; |
| 308 | if (!pdch->is_enabled()) |
| 309 | continue; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 310 | free_tfis &= ~pdch->assigned_tfi(dir); |
| 311 | trx_has_pdch = true; |
| 312 | has_pdch = true; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 313 | } |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 314 | if (trx_has_pdch && free_tfis) |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 315 | break; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 316 | |
| 317 | free_tfis = 0; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 318 | } |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 319 | if (!has_pdch) { |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 320 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
| 321 | return -EINVAL; |
| 322 | } |
| 323 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 324 | if (!free_tfis) { |
| 325 | LOGP(DRLCMAC, LOGL_NOTICE, "No TFI available.\n"); |
| 326 | return -EBUSY; |
| 327 | } |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 328 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 329 | |
| 330 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 331 | "Searching for first unallocated TFI: TRX=%d\n", trx); |
| 332 | |
| 333 | /* find the first */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 334 | for (tfi = 0; tfi < 32; tfi++) { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 335 | if (free_tfis & 1 << tfi) |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 336 | break; |
| 337 | } |
| 338 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 339 | OSMO_ASSERT(tfi < 32); |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 340 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 341 | LOGP(DRLCMAC, LOGL_DEBUG, " Found TFI=%d.\n", tfi); |
| 342 | *_trx = trx; |
| 343 | return tfi; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 344 | } |
| 345 | |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 346 | int BTS::rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn) |
| 347 | { |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 348 | struct gprs_rlcmac_dl_tbf *dl_tbf = NULL; |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 349 | uint8_t plen; |
| 350 | uint32_t tlli; |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 351 | GprsMs *ms; |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 352 | |
| 353 | /* move to IA Rest Octets */ |
| 354 | plen = data[0] >> 2; |
| 355 | data += 1 + plen; |
| 356 | |
| 357 | if ((*data & 0xf0) != 0xd0) { |
| 358 | LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but rest " |
| 359 | "octets do not start with bit sequence 'HH01' " |
| 360 | "(Packet Downlink Assignment)\n"); |
| 361 | return -EINVAL; |
| 362 | } |
| 363 | |
| 364 | /* get TLLI from downlink assignment */ |
| 365 | tlli = (*data++) << 28; |
| 366 | tlli |= (*data++) << 20; |
| 367 | tlli |= (*data++) << 12; |
| 368 | tlli |= (*data++) << 4; |
| 369 | tlli |= (*data++) >> 4; |
| 370 | |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 371 | ms = ms_by_tlli(tlli); |
| 372 | if (ms) |
| 373 | dl_tbf = ms->dl_tbf(); |
Daniel Willmann | 1dac2eb | 2014-08-07 12:37:34 +0200 | [diff] [blame] | 374 | if (!dl_tbf) { |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 375 | LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but TLLI=%08x " |
| 376 | "does not exit\n", tlli); |
| 377 | return -EINVAL; |
| 378 | } |
| 379 | |
| 380 | LOGP(DRLCMAC, LOGL_DEBUG, "Got IMM.ASS confirm for TLLI=%08x\n", tlli); |
| 381 | |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 382 | if (dl_tbf->m_wait_confirm) |
Daniel Willmann | 1dac2eb | 2014-08-07 12:37:34 +0200 | [diff] [blame] | 383 | tbf_timer_start(dl_tbf, 0, Tassign_agch); |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 384 | |
| 385 | return 0; |
| 386 | } |
| 387 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 388 | int BTS::rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta) |
| 389 | { |
Jacob Erlbeck | 1f33294 | 2015-05-04 08:21:17 +0200 | [diff] [blame] | 390 | struct gprs_rlcmac_ul_tbf *tbf = NULL; |
Holger Hans Peter Freyther | f37e514 | 2013-12-25 18:56:34 +0100 | [diff] [blame] | 391 | uint8_t trx_no, ts_no = 0; |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 392 | uint8_t sb = 0; |
| 393 | uint32_t sb_fn = 0; |
| 394 | int rc; |
| 395 | uint8_t plen; |
| 396 | |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 397 | rach_frame(); |
| 398 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 399 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF on RACH, so we provide " |
| 400 | "one:\n"); |
| 401 | if ((ra & 0xf8) == 0x70) { |
| 402 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single block " |
| 403 | "allocation\n"); |
| 404 | sb = 1; |
| 405 | } else if (m_bts.force_two_phase) { |
| 406 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single phase access, " |
| 407 | "but we force two phase access\n"); |
| 408 | sb = 1; |
| 409 | } |
| 410 | if (qta < 0) |
| 411 | qta = 0; |
| 412 | if (qta > 252) |
| 413 | qta = 252; |
| 414 | if (sb) { |
Holger Hans Peter Freyther | f37e514 | 2013-12-25 18:56:34 +0100 | [diff] [blame] | 415 | rc = sba()->alloc(&trx_no, &ts_no, &sb_fn, qta >> 2); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 416 | if (rc < 0) |
| 417 | return rc; |
| 418 | LOGP(DRLCMAC, LOGL_DEBUG, "RX: [PCU <- BTS] RACH qbit-ta=%d " |
Jacob Erlbeck | ddfc0d5 | 2015-05-27 13:03:15 +0200 | [diff] [blame] | 419 | "ra=0x%02x, Fn=%d (%d,%d,%d), SBFn=%d\n", |
| 420 | qta, ra, |
| 421 | Fn, (Fn / (26 * 51)) % 32, Fn % 51, Fn % 26, |
| 422 | sb_fn); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 423 | LOGP(DRLCMAC, LOGL_INFO, "TX: Immediate Assignment Uplink " |
| 424 | "(AGCH)\n"); |
| 425 | } else { |
| 426 | // Create new TBF |
| 427 | #warning "Copy and pate with other routines.." |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 428 | /* set class to 0, since we don't know the multislot class yet */ |
Jacob Erlbeck | 5879c64 | 2015-07-10 10:41:36 +0200 | [diff] [blame] | 429 | tbf = tbf_alloc_ul_tbf(&m_bts, NULL, -1, 0, 1); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 430 | if (!tbf) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 431 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 432 | /* FIXME: send reject */ |
| 433 | return -EBUSY; |
| 434 | } |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 435 | tbf->set_ta(qta >> 2); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 436 | tbf->set_state(GPRS_RLCMAC_FLOW); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 437 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_CCCH); |
| 438 | tbf_timer_start(tbf, 3169, m_bts.t3169, 0); |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 439 | LOGP(DRLCMAC, LOGL_DEBUG, "%s [UPLINK] START\n", |
| 440 | tbf_name(tbf)); |
| 441 | LOGP(DRLCMAC, LOGL_DEBUG, "%s RX: [PCU <- BTS] RACH " |
| 442 | "qbit-ta=%d ra=0x%02x, Fn=%d (%d,%d,%d)\n", |
| 443 | tbf_name(tbf), |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 444 | qta, ra, Fn, (Fn / (26 * 51)) % 32, Fn % 51, Fn % 26); |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 445 | LOGP(DRLCMAC, LOGL_INFO, "%s TX: START Immediate " |
| 446 | "Assignment Uplink (AGCH)\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 447 | } |
| 448 | bitvec *immediate_assignment = bitvec_alloc(22) /* without plen */; |
| 449 | bitvec_unhex(immediate_assignment, |
| 450 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 451 | if (sb) |
| 452 | plen = Encoding::write_immediate_assignment(&m_bts, immediate_assignment, 0, ra, |
Holger Hans Peter Freyther | f37e514 | 2013-12-25 18:56:34 +0100 | [diff] [blame] | 453 | Fn, qta >> 2, m_bts.trx[trx_no].arfcn, ts_no, |
| 454 | m_bts.trx[trx_no].pdch[ts_no].tsc, 0, 0, 0, 0, sb_fn, 1, |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 455 | m_bts.alpha, m_bts.gamma, -1); |
| 456 | else |
| 457 | plen = Encoding::write_immediate_assignment(&m_bts, immediate_assignment, 0, ra, |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 458 | Fn, tbf->ta(), tbf->trx->arfcn, tbf->first_ts, tbf->tsc(), |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 459 | tbf->tfi(), tbf->m_usf[tbf->first_ts], 0, 0, 0, 0, |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 460 | m_bts.alpha, m_bts.gamma, -1); |
| 461 | pcu_l1if_tx_agch(immediate_assignment, plen); |
| 462 | bitvec_free(immediate_assignment); |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 467 | /* depending on the current TBF, we assign on PACCH or AGCH */ |
| 468 | void BTS::trigger_dl_ass( |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 469 | struct gprs_rlcmac_dl_tbf *dl_tbf, |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 470 | struct gprs_rlcmac_tbf *old_tbf) |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 471 | { |
| 472 | /* stop pending timer */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 473 | dl_tbf->stop_timer(); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 474 | |
| 475 | /* check for downlink tbf: */ |
| 476 | if (old_tbf) { |
| 477 | LOGP(DRLCMAC, LOGL_DEBUG, "Send dowlink assignment on " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 478 | "PACCH, because %s exists\n", tbf_name(old_tbf)); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 479 | old_tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 480 | |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 481 | old_tbf->was_releasing = old_tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE); |
| 482 | |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 483 | /* change state */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 484 | dl_tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 485 | dl_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 486 | /* start timer */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 487 | tbf_timer_start(dl_tbf, 0, Tassign_pacch); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 488 | } else { |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 489 | LOGP(DRLCMAC, LOGL_DEBUG, "Send dowlink assignment for %s on PCH, no TBF exist (IMSI=%s)\n", tbf_name(dl_tbf), dl_tbf->imsi()); |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 490 | dl_tbf->was_releasing = dl_tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 491 | /* change state */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 492 | dl_tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 493 | dl_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_CCCH); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 494 | /* send immediate assignment */ |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 495 | dl_tbf->bts->snd_dl_ass(dl_tbf, 0, dl_tbf->imsi()); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 496 | dl_tbf->m_wait_confirm = 1; |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 497 | } |
| 498 | } |
| 499 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 500 | void BTS::snd_dl_ass(gprs_rlcmac_tbf *tbf, uint8_t poll, const char *imsi) |
| 501 | { |
| 502 | int plen; |
| 503 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 504 | LOGP(DRLCMAC, LOGL_INFO, "TX: START %s Immediate Assignment Downlink (PCH)\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 505 | bitvec *immediate_assignment = bitvec_alloc(22); /* without plen */ |
| 506 | bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 507 | /* use request reference that has maximum distance to current time, |
| 508 | * so the assignment will not conflict with possible RACH requests. */ |
| 509 | plen = Encoding::write_immediate_assignment(&m_bts, immediate_assignment, 1, 125, |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 510 | (tbf->pdch[tbf->first_ts]->last_rts_fn + 21216) % 2715648, tbf->ta(), |
Holger Hans Peter Freyther | 8f399de | 2013-12-25 20:22:35 +0100 | [diff] [blame] | 511 | tbf->trx->arfcn, tbf->first_ts, tbf->tsc(), tbf->tfi(), 0, tbf->tlli(), poll, |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 512 | tbf->poll_fn, 0, m_bts.alpha, m_bts.gamma, -1); |
| 513 | pcu_l1if_tx_pch(immediate_assignment, plen, imsi); |
| 514 | bitvec_free(immediate_assignment); |
| 515 | } |
| 516 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 517 | |
Jacob Erlbeck | cb1b494 | 2015-06-19 10:59:58 +0200 | [diff] [blame] | 518 | GprsMs *BTS::ms_alloc(uint8_t ms_class) |
| 519 | { |
| 520 | GprsMs *ms; |
| 521 | ms = ms_store().create_ms(); |
| 522 | |
| 523 | ms->set_timeout(m_bts.ms_idle_sec); |
| 524 | ms->set_ms_class(ms_class); |
| 525 | |
| 526 | return ms; |
| 527 | } |
| 528 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 529 | /* |
| 530 | * PDCH code below. TODO: move to a separate file |
| 531 | */ |
| 532 | |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 533 | void gprs_rlcmac_pdch::enable() |
| 534 | { |
| 535 | /* TODO: Check if there are still allocated resources.. */ |
| 536 | INIT_LLIST_HEAD(&paging_list); |
| 537 | m_is_enabled = 1; |
| 538 | } |
| 539 | |
| 540 | void gprs_rlcmac_pdch::disable() |
| 541 | { |
| 542 | /* TODO.. kick free_resources once we know the TRX/TS we are on */ |
| 543 | m_is_enabled = 0; |
| 544 | } |
| 545 | |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 546 | void gprs_rlcmac_pdch::free_resources() |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 547 | { |
| 548 | struct gprs_rlcmac_paging *pag; |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 549 | |
| 550 | /* we are not enabled. there should be no resources */ |
| 551 | if (!is_enabled()) |
| 552 | return; |
| 553 | |
| 554 | /* kick all TBF on slot */ |
| 555 | gprs_rlcmac_tbf::free_all(this); |
| 556 | |
| 557 | /* flush all pending paging messages */ |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 558 | while ((pag = dequeue_paging())) |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 559 | talloc_free(pag); |
| 560 | |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 561 | trx->bts->sba()->free_resources(this); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 562 | } |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 563 | |
| 564 | struct gprs_rlcmac_paging *gprs_rlcmac_pdch::dequeue_paging() |
| 565 | { |
| 566 | struct gprs_rlcmac_paging *pag; |
| 567 | |
| 568 | if (llist_empty(&paging_list)) |
| 569 | return NULL; |
| 570 | pag = llist_entry(paging_list.next, struct gprs_rlcmac_paging, list); |
| 571 | llist_del(&pag->list); |
| 572 | |
| 573 | return pag; |
| 574 | } |
| 575 | |
| 576 | struct msgb *gprs_rlcmac_pdch::packet_paging_request() |
| 577 | { |
| 578 | struct gprs_rlcmac_paging *pag; |
| 579 | struct msgb *msg; |
| 580 | unsigned wp = 0, len; |
| 581 | |
| 582 | /* no paging, no message */ |
| 583 | pag = dequeue_paging(); |
| 584 | if (!pag) |
| 585 | return NULL; |
| 586 | |
| 587 | LOGP(DRLCMAC, LOGL_DEBUG, "Scheduling paging\n"); |
| 588 | |
| 589 | /* alloc message */ |
| 590 | msg = msgb_alloc(23, "pag ctrl block"); |
| 591 | if (!msg) { |
| 592 | talloc_free(pag); |
| 593 | return NULL; |
| 594 | } |
| 595 | bitvec *pag_vec = bitvec_alloc(23); |
| 596 | if (!pag_vec) { |
| 597 | msgb_free(msg); |
| 598 | talloc_free(pag); |
| 599 | return NULL; |
| 600 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 601 | wp = Encoding::write_packet_paging_request(pag_vec); |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 602 | |
| 603 | /* loop until message is full */ |
| 604 | while (pag) { |
| 605 | /* try to add paging */ |
| 606 | if ((pag->identity_lv[1] & 0x07) == 4) { |
| 607 | /* TMSI */ |
| 608 | LOGP(DRLCMAC, LOGL_DEBUG, "- TMSI=0x%08x\n", |
| 609 | ntohl(*((uint32_t *)(pag->identity_lv + 1)))); |
| 610 | len = 1 + 1 + 1 + 32 + 2 + 1; |
| 611 | if (pag->identity_lv[0] != 5) { |
| 612 | LOGP(DRLCMAC, LOGL_ERROR, "TMSI paging with " |
| 613 | "MI != 5 octets!\n"); |
| 614 | goto continue_next; |
| 615 | } |
| 616 | } else { |
| 617 | /* MI */ |
| 618 | LOGP(DRLCMAC, LOGL_DEBUG, "- MI=%s\n", |
| 619 | osmo_hexdump(pag->identity_lv + 1, |
| 620 | pag->identity_lv[0])); |
| 621 | len = 1 + 1 + 1 + 4 + (pag->identity_lv[0]<<3) + 2 + 1; |
| 622 | if (pag->identity_lv[0] > 8) { |
| 623 | LOGP(DRLCMAC, LOGL_ERROR, "Paging with " |
| 624 | "MI > 8 octets!\n"); |
| 625 | goto continue_next; |
| 626 | } |
| 627 | } |
| 628 | if (wp + len > 184) { |
| 629 | LOGP(DRLCMAC, LOGL_DEBUG, "- Does not fit, so schedule " |
| 630 | "next time\n"); |
| 631 | /* put back paging record, because does not fit */ |
| 632 | llist_add_tail(&pag->list, &paging_list); |
| 633 | break; |
| 634 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 635 | Encoding::write_repeated_page_info(pag_vec, wp, pag->identity_lv[0], |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 636 | pag->identity_lv + 1, pag->chan_needed); |
| 637 | |
| 638 | continue_next: |
| 639 | talloc_free(pag); |
| 640 | pag = dequeue_paging(); |
| 641 | } |
| 642 | |
| 643 | bitvec_pack(pag_vec, msgb_put(msg, 23)); |
| 644 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| 645 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Paging Request +++++++++++++++++++++++++\n"); |
| 646 | decode_gsm_rlcmac_downlink(pag_vec, mac_control_block); |
| 647 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 648 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Paging Request -------------------------\n"); |
| 649 | bitvec_free(pag_vec); |
| 650 | talloc_free(mac_control_block); |
| 651 | |
| 652 | return msg; |
| 653 | } |
| 654 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 655 | void gprs_rlcmac_pdch::add_paging(struct gprs_rlcmac_paging *pag) |
| 656 | { |
| 657 | llist_add(&pag->list, &paging_list); |
| 658 | } |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 659 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 660 | /* receive UL data block |
| 661 | * |
| 662 | * The blocks are defragmented and forwarded as LLC frames, if complete. |
| 663 | */ |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 664 | int gprs_rlcmac_pdch::rcv_data_block_acknowledged(uint8_t *data, uint8_t len, |
| 665 | struct pcu_l1_meas *meas) |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 666 | { |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 667 | struct gprs_rlcmac_ul_tbf *tbf; |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 668 | struct rlc_ul_header *rh = (struct rlc_ul_header *)data; |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 669 | |
| 670 | switch (len) { |
| 671 | case 54: |
| 672 | /* omitting spare bits */ |
| 673 | len = 53; |
| 674 | break; |
| 675 | case 40: |
| 676 | /* omitting spare bits */ |
| 677 | len = 39; |
| 678 | break; |
| 679 | case 34: |
| 680 | /* omitting spare bits */ |
| 681 | len = 33; |
| 682 | break; |
| 683 | case 23: |
| 684 | break; |
| 685 | default: |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 686 | bts()->decode_error(); |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 687 | LOGP(DRLCMACUL, LOGL_ERROR, "Dropping data block with invalid" |
| 688 | "length: %d)\n", len); |
| 689 | return -EINVAL; |
| 690 | } |
| 691 | |
| 692 | /* find TBF inst from given TFI */ |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 693 | tbf = ul_tbf_by_tfi(rh->tfi); |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 694 | if (!tbf) { |
Holger Hans Peter Freyther | 15bb1a2 | 2013-10-27 12:30:46 +0100 | [diff] [blame] | 695 | LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA unknown TFI=%d\n", |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 696 | rh->tfi); |
| 697 | return 0; |
| 698 | } |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 699 | |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 700 | return tbf->rcv_data_block_acknowledged(data, len, meas); |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 701 | } |
| 702 | |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 703 | void gprs_rlcmac_pdch::rcv_control_ack(Packet_Control_Acknowledgement_t *packet, uint32_t fn) |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 704 | { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 705 | struct gprs_rlcmac_tbf *tbf, *new_tbf; |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 706 | uint32_t tlli = 0; |
| 707 | |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 708 | tlli = packet->TLLI; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 709 | tbf = bts()->ul_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 710 | if (!tbf) |
| 711 | tbf = bts()->dl_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 712 | |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 713 | if (!tbf) { |
| 714 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK with " |
Holger Hans Peter Freyther | 15bb1a2 | 2013-10-27 12:30:46 +0100 | [diff] [blame] | 715 | "unknown FN=%u TLLI=0x%08x (TRX %d TS %d)\n", |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 716 | fn, tlli, trx_no(), ts_no); |
| 717 | return; |
| 718 | } |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 719 | tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 720 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 721 | LOGP(DRLCMAC, LOGL_DEBUG, "RX: [PCU <- BTS] %s Packet Control Ack\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 722 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
| 723 | |
| 724 | /* check if this control ack belongs to packet uplink ack */ |
| 725 | if (tbf->ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 726 | LOGP(DRLCMAC, LOGL_DEBUG, "TBF: [UPLINK] END %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 727 | tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE; |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 728 | if ((tbf->state_flags & |
| 729 | (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) { |
| 730 | tbf->state_flags &= |
| 731 | ~(1 << GPRS_RLCMAC_FLAG_TO_UL_ACK); |
| 732 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered uplink " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 733 | "ack for UL %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 734 | } |
| 735 | tbf_free(tbf); |
| 736 | return; |
| 737 | } |
| 738 | if (tbf->dl_ass_state == GPRS_RLCMAC_DL_ASS_WAIT_ACK) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 739 | LOGP(DRLCMAC, LOGL_DEBUG, "TBF: [UPLINK] DOWNLINK ASSIGNED %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 740 | /* reset N3105 */ |
| 741 | tbf->n3105 = 0; |
| 742 | tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 743 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 744 | new_tbf = tbf->ms() ? tbf->ms()->dl_tbf() : NULL; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 745 | if (!new_tbf) { |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 746 | LOGP(DRLCMAC, LOGL_ERROR, "Got ACK, but DL " |
Holger Hans Peter Freyther | 875fc89 | 2013-10-27 13:35:46 +0100 | [diff] [blame] | 747 | "TBF is gone TLLI=0x%08x\n", tlli); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 748 | return; |
| 749 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 750 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE)) |
| 751 | tbf_free(tbf); |
| 752 | |
| 753 | new_tbf->set_state(GPRS_RLCMAC_FLOW); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 754 | /* stop pending assignment timer */ |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 755 | new_tbf->stop_timer(); |
| 756 | if ((new_tbf->state_flags & |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 757 | (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 758 | new_tbf->state_flags &= |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 759 | ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ASS); |
| 760 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered downlink " |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 761 | "assignment for %s\n", tbf_name(new_tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 762 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 763 | tbf_assign_control_ts(new_tbf); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 764 | return; |
| 765 | } |
| 766 | if (tbf->ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 767 | LOGP(DRLCMAC, LOGL_DEBUG, "TBF: [DOWNLINK] UPLINK ASSIGNED %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 768 | /* reset N3105 */ |
| 769 | tbf->n3105 = 0; |
| 770 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 771 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 772 | new_tbf = tbf->ms() ? tbf->ms()->ul_tbf() : NULL; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 773 | if (!new_tbf) { |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 774 | LOGP(DRLCMAC, LOGL_ERROR, "Got ACK, but UL " |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 775 | "TBF is gone TLLI=0x%08x\n", tlli); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 776 | return; |
| 777 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 778 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE)) |
| 779 | tbf_free(tbf); |
| 780 | |
| 781 | new_tbf->set_state(GPRS_RLCMAC_FLOW); |
| 782 | if ((new_tbf->state_flags & |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 783 | (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 784 | new_tbf->state_flags &= |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 785 | ~(1 << GPRS_RLCMAC_FLAG_TO_UL_ASS); |
| 786 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered uplink " |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 787 | "assignment for UL %s\n", tbf_name(new_tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 788 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 789 | tbf_assign_control_ts(new_tbf); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 790 | return; |
| 791 | } |
| 792 | LOGP(DRLCMAC, LOGL_ERROR, "Error: received PACET CONTROL ACK " |
| 793 | "at no request\n"); |
| 794 | } |
| 795 | |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 796 | static void get_rx_qual_meas(struct pcu_l1_meas *meas, uint8_t rx_qual_enc) |
| 797 | { |
| 798 | static const int16_t rx_qual_map[] = { |
| 799 | 0, /* 0,14 % */ |
| 800 | 0, /* 0,28 % */ |
| 801 | 1, /* 0,57 % */ |
| 802 | 1, /* 1,13 % */ |
| 803 | 2, /* 2,26 % */ |
| 804 | 5, /* 4,53 % */ |
| 805 | 9, /* 9,05 % */ |
| 806 | 18, /* 18,10 % */ |
| 807 | }; |
| 808 | |
| 809 | meas->set_ms_rx_qual(rx_qual_map[ |
| 810 | OSMO_MIN(rx_qual_enc, ARRAY_SIZE(rx_qual_map)-1) |
| 811 | ]); |
| 812 | } |
| 813 | |
| 814 | static void get_meas(struct pcu_l1_meas *meas, |
| 815 | const Packet_Resource_Request_t *qr) |
| 816 | { |
| 817 | unsigned i; |
| 818 | |
| 819 | meas->set_ms_c_value(qr->C_VALUE); |
| 820 | if (qr->Exist_SIGN_VAR) |
| 821 | meas->set_ms_sign_var((qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
| 822 | |
| 823 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->Slot), ARRAY_SIZE(meas->ts)); i++) |
| 824 | { |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 825 | if (qr->Slot[i].Exist) { |
| 826 | LOGP(DRLCMAC, LOGL_INFO, |
| 827 | "Packet resource request: i_level[%d] = %d\n", |
| 828 | i, qr->Slot[i].I_LEVEL); |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 829 | meas->set_ms_i_level(i, -2 * qr->Slot[i].I_LEVEL); |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 830 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 831 | } |
| 832 | } |
| 833 | |
| 834 | static void get_meas(struct pcu_l1_meas *meas, |
| 835 | const Channel_Quality_Report_t *qr) |
| 836 | { |
| 837 | unsigned i; |
| 838 | |
| 839 | get_rx_qual_meas(meas, qr->RXQUAL); |
| 840 | meas->set_ms_c_value(qr->C_VALUE); |
| 841 | meas->set_ms_sign_var((qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
| 842 | |
| 843 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->Slot), ARRAY_SIZE(meas->ts)); i++) |
| 844 | { |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 845 | if (qr->Slot[i].Exist) { |
| 846 | LOGP(DRLCMAC, LOGL_INFO, |
| 847 | "Channel quality report: i_level[%d] = %d\n", |
| 848 | i, qr->Slot[i].I_LEVEL_TN); |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 849 | meas->set_ms_i_level(i, -2 * qr->Slot[i].I_LEVEL_TN); |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 850 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 851 | } |
| 852 | } |
| 853 | |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 854 | void gprs_rlcmac_pdch::rcv_control_dl_ack_nack(Packet_Downlink_Ack_Nack_t *ack_nack, uint32_t fn) |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 855 | { |
| 856 | int8_t tfi = 0; /* must be signed */ |
Daniel Willmann | 6c813fc | 2014-07-30 19:12:27 +0200 | [diff] [blame] | 857 | struct gprs_rlcmac_dl_tbf *tbf; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 858 | int rc; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 859 | struct pcu_l1_meas meas; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 860 | |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 861 | tfi = ack_nack->DOWNLINK_TFI; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 862 | tbf = bts()->dl_tbf_by_poll_fn(fn, trx_no(), ts_no); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 863 | if (!tbf) { |
| 864 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " |
| 865 | "unknown FN=%u TFI=%d (TRX %d TS %d)\n", |
| 866 | fn, tfi, trx_no(), ts_no); |
| 867 | return; |
| 868 | } |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 869 | if (tbf->tfi() != tfi) { |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 870 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " |
| 871 | "wrong TFI=%d, ignoring!\n", tfi); |
| 872 | return; |
| 873 | } |
| 874 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_DL_ACK); |
| 875 | if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) { |
| 876 | tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ACK); |
| 877 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered downlink ack " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 878 | "for %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 879 | } |
| 880 | /* reset N3105 */ |
| 881 | tbf->n3105 = 0; |
| 882 | tbf->stop_t3191(); |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 883 | LOGP(DRLCMAC, LOGL_DEBUG, "RX: [PCU <- BTS] %s Packet Downlink Ack/Nack\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 884 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 885 | |
Daniel Willmann | fc03bbe | 2014-05-30 17:57:59 +0200 | [diff] [blame] | 886 | rc = tbf->rcvd_dl_ack( |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 887 | ack_nack->Ack_Nack_Description.FINAL_ACK_INDICATION, |
| 888 | ack_nack->Ack_Nack_Description.STARTING_SEQUENCE_NUMBER, |
| 889 | ack_nack->Ack_Nack_Description.RECEIVED_BLOCK_BITMAP); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 890 | if (rc == 1) { |
| 891 | tbf_free(tbf); |
| 892 | return; |
| 893 | } |
| 894 | /* check for channel request */ |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 895 | if (ack_nack->Exist_Channel_Request_Description) { |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 896 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " |
| 897 | "message, so we provide one:\n"); |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 898 | |
| 899 | /* This call will register the new TBF with the MS on success */ |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 900 | tbf_alloc_ul(bts_data(), tbf->trx->trx_no, tbf->ms_class(), |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 901 | tbf->tlli(), tbf->ta(), tbf->ms()); |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 902 | |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 903 | /* schedule uplink assignment */ |
| 904 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 905 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 906 | /* get measurements */ |
| 907 | if (tbf->ms()) { |
| 908 | get_meas(&meas, &ack_nack->Channel_Quality_Report); |
| 909 | tbf->ms()->update_l1_meas(&meas); |
| 910 | } |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 911 | } |
| 912 | |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 913 | void gprs_rlcmac_pdch::rcv_resource_request(Packet_Resource_Request_t *request, uint32_t fn) |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 914 | { |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 915 | struct gprs_rlcmac_sba *sba; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 916 | |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 917 | if (request->ID.UnionType) { |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 918 | struct gprs_rlcmac_ul_tbf *ul_tbf = NULL; |
| 919 | struct gprs_rlcmac_dl_tbf *dl_tbf = NULL; |
Holger Hans Peter Freyther | 8021644 | 2013-10-27 15:42:25 +0100 | [diff] [blame] | 920 | uint32_t tlli = request->ID.u.TLLI; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 921 | uint8_t ms_class = 0; |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 922 | uint8_t ta = 0; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 923 | struct pcu_l1_meas meas; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 924 | |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 925 | GprsMs *ms = bts()->ms_by_tlli(tlli); |
| 926 | /* Keep the ms, even if it gets idle temporarily */ |
| 927 | GprsMs::Guard guard(ms); |
| 928 | |
| 929 | if (ms) { |
| 930 | ul_tbf = ms->ul_tbf(); |
| 931 | dl_tbf = ms->dl_tbf(); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 932 | ta = ms->ta(); |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 933 | } |
| 934 | |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 935 | if (ul_tbf) { |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 936 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 937 | "TLLI=0x%08x while %s still " |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 938 | "exists. Killing pending DL TBF\n", |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 939 | tlli, tbf_name(ul_tbf)); |
| 940 | tbf_free(ul_tbf); |
| 941 | ul_tbf = NULL; |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 942 | } |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 943 | |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 944 | if (dl_tbf) { |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 945 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 946 | "TLLI=0x%08x while %s still exists. " |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 947 | "Killing pending DL TBF\n", tlli, |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 948 | tbf_name(dl_tbf)); |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 949 | tbf_free(dl_tbf); |
Holger Hans Peter Freyther | 3d0cc2f | 2014-01-16 10:09:42 +0100 | [diff] [blame] | 950 | dl_tbf = NULL; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 951 | } |
| 952 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF " |
| 953 | "in packet resource request of single " |
| 954 | "block, so we provide one:\n"); |
| 955 | sba = bts()->sba()->find(this, fn); |
| 956 | if (!sba) { |
| 957 | LOGP(DRLCMAC, LOGL_NOTICE, "MS requests UL TBF " |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 958 | "in packet resource request of single " |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 959 | "block, but there is no resource request " |
| 960 | "scheduled!\n"); |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 961 | } else { |
| 962 | ta = sba->ta; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 963 | bts()->sba()->free_sba(sba); |
| 964 | } |
| 965 | if (request->Exist_MS_Radio_Access_capability) |
| 966 | ms_class = Decoding::get_ms_class_by_capability(&request->MS_Radio_Access_capability); |
| 967 | if (!ms_class) |
| 968 | LOGP(DRLCMAC, LOGL_NOTICE, "MS does not give us a class.\n"); |
Jacob Erlbeck | 6d86628 | 2015-06-19 09:08:23 +0200 | [diff] [blame] | 969 | ul_tbf = tbf_alloc_ul(bts_data(), trx_no(), ms_class, tlli, ta, ms); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 970 | if (!ul_tbf) |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 971 | return; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 972 | |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 973 | /* set control ts to current MS's TS, until assignment complete */ |
| 974 | LOGP(DRLCMAC, LOGL_DEBUG, "Change control TS to %d until assinment is complete.\n", ts_no); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 975 | ul_tbf->control_ts = ts_no; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 976 | /* schedule uplink assignment */ |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 977 | ul_tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 978 | |
| 979 | /* get measurements */ |
| 980 | if (ul_tbf->ms()) { |
| 981 | get_meas(&meas, request); |
| 982 | ul_tbf->ms()->update_l1_meas(&meas); |
| 983 | } |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 984 | return; |
| 985 | } |
| 986 | |
| 987 | if (request->ID.u.Global_TFI.UnionType) { |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 988 | struct gprs_rlcmac_dl_tbf *dl_tbf; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 989 | int8_t tfi = request->ID.u.Global_TFI.u.DOWNLINK_TFI; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 990 | dl_tbf = bts()->dl_tbf_by_tfi(tfi, trx_no(), ts_no); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 991 | if (!dl_tbf) { |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 992 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESSOURCE REQ unknown downlink TFI=%d\n", tfi); |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 993 | return; |
| 994 | } |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 995 | LOGP(DRLCMAC, LOGL_ERROR, |
| 996 | "RX: [PCU <- BTS] %s FIXME: Packet resource request\n", |
| 997 | tbf_name(dl_tbf)); |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 998 | } else { |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 999 | struct gprs_rlcmac_ul_tbf *ul_tbf; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1000 | int8_t tfi = request->ID.u.Global_TFI.u.UPLINK_TFI; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1001 | ul_tbf = bts()->ul_tbf_by_tfi(tfi, trx_no(), ts_no); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1002 | if (!ul_tbf) { |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1003 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESSOURCE REQ unknown uplink TFI=%d\n", tfi); |
| 1004 | return; |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1005 | } |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1006 | LOGP(DRLCMAC, LOGL_ERROR, |
| 1007 | "RX: [PCU <- BTS] %s FIXME: Packet resource request\n", |
| 1008 | tbf_name(ul_tbf)); |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1009 | } |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1010 | } |
| 1011 | |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1012 | void gprs_rlcmac_pdch::rcv_measurement_report(Packet_Measurement_Report_t *report, uint32_t fn) |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1013 | { |
| 1014 | struct gprs_rlcmac_sba *sba; |
| 1015 | |
| 1016 | sba = bts()->sba()->find(this, fn); |
| 1017 | if (!sba) { |
| 1018 | LOGP(DRLCMAC, LOGL_NOTICE, "MS send measurement " |
| 1019 | "in packet resource request of single " |
| 1020 | "block, but there is no resource request " |
Holger Hans Peter Freyther | 53a336f | 2013-10-27 12:47:48 +0100 | [diff] [blame] | 1021 | "scheduled! TLLI=0x%08x\n", report->TLLI); |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1022 | } else { |
Jacob Erlbeck | 1db67e0 | 2015-05-22 18:02:51 +0200 | [diff] [blame] | 1023 | GprsMs *ms = bts()->ms_store().get_ms(report->TLLI); |
| 1024 | if (!ms) |
| 1025 | LOGP(DRLCMAC, LOGL_NOTICE, "MS send measurement " |
| 1026 | "but TLLI 0x%08x is unknown\n", report->TLLI); |
| 1027 | else |
| 1028 | ms->set_ta(sba->ta); |
| 1029 | |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1030 | bts()->sba()->free_sba(sba); |
| 1031 | } |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1032 | gprs_rlcmac_meas_rep(report); |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1033 | } |
| 1034 | |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1035 | /* Received Uplink RLC control block. */ |
| 1036 | int gprs_rlcmac_pdch::rcv_control_block( |
| 1037 | bitvec *rlc_block, uint32_t fn) |
| 1038 | { |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1039 | RlcMacUplink_t * ul_control_block = (RlcMacUplink_t *)talloc_zero(tall_pcu_ctx, RlcMacUplink_t); |
| 1040 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ RX : Uplink Control Block +++++++++++++++++++++++++\n"); |
| 1041 | decode_gsm_rlcmac_uplink(rlc_block, ul_control_block); |
| 1042 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 1043 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- RX : Uplink Control Block -------------------------\n"); |
| 1044 | switch (ul_control_block->u.MESSAGE_TYPE) { |
| 1045 | case MT_PACKET_CONTROL_ACK: |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 1046 | rcv_control_ack(&ul_control_block->u.Packet_Control_Acknowledgement, fn); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1047 | break; |
| 1048 | case MT_PACKET_DOWNLINK_ACK_NACK: |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 1049 | rcv_control_dl_ack_nack(&ul_control_block->u.Packet_Downlink_Ack_Nack, fn); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1050 | break; |
| 1051 | case MT_PACKET_RESOURCE_REQUEST: |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 1052 | rcv_resource_request(&ul_control_block->u.Packet_Resource_Request, fn); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1053 | break; |
| 1054 | case MT_PACKET_MEASUREMENT_REPORT: |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1055 | rcv_measurement_report(&ul_control_block->u.Packet_Measurement_Report, fn); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1056 | break; |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 1057 | case MT_PACKET_UPLINK_DUMMY_CONTROL_BLOCK: |
| 1058 | /* ignoring it. change the SI to not force sending these? */ |
| 1059 | break; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1060 | default: |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 1061 | bts()->decode_error(); |
Holger Hans Peter Freyther | 180def9 | 2013-10-27 10:36:37 +0100 | [diff] [blame] | 1062 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 1063 | "RX: [PCU <- BTS] unknown control block(%d) received\n", |
| 1064 | ul_control_block->u.MESSAGE_TYPE); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1065 | } |
| 1066 | talloc_free(ul_control_block); |
| 1067 | return 1; |
| 1068 | } |
| 1069 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 1070 | |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1071 | /* received RLC/MAC block from L1 */ |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 1072 | int gprs_rlcmac_pdch::rcv_block(uint8_t *data, uint8_t len, uint32_t fn, |
| 1073 | struct pcu_l1_meas *meas) |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 1074 | { |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1075 | unsigned payload = data[0] >> 6; |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1076 | bitvec *block; |
| 1077 | int rc = 0; |
| 1078 | |
| 1079 | switch (payload) { |
| 1080 | case GPRS_RLCMAC_DATA_BLOCK: |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 1081 | rc = rcv_data_block_acknowledged(data, len, meas); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1082 | break; |
| 1083 | case GPRS_RLCMAC_CONTROL_BLOCK: |
| 1084 | block = bitvec_alloc(len); |
| 1085 | if (!block) |
| 1086 | return -ENOMEM; |
| 1087 | bitvec_unpack(block, data); |
Holger Hans Peter Freyther | 05f8efc | 2013-10-26 18:53:16 +0200 | [diff] [blame] | 1088 | rc = rcv_control_block(block, fn); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1089 | bitvec_free(block); |
| 1090 | break; |
| 1091 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
| 1092 | LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
| 1093 | break; |
| 1094 | default: |
| 1095 | LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload(%u).\n", payload); |
| 1096 | rc = -EINVAL; |
| 1097 | } |
| 1098 | |
| 1099 | return rc; |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 1100 | } |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1101 | |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1102 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_from_list_by_tfi(struct llist_head *tbf_list, uint8_t tfi, |
| 1103 | enum gprs_rlcmac_tbf_direction dir) |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1104 | { |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1105 | gprs_rlcmac_tbf *tbf; |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 1106 | struct llist_pods *lpods; |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1107 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 1108 | llist_pods_for_each_entry(tbf, tbf_list, list, lpods) { |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1109 | if (tbf->tfi() != tfi) |
| 1110 | continue; |
| 1111 | if (!tbf->pdch[ts_no]) |
| 1112 | continue; |
| 1113 | return tbf; |
| 1114 | } |
| 1115 | return NULL; |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1116 | } |
| 1117 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1118 | gprs_rlcmac_ul_tbf *gprs_rlcmac_pdch::ul_tbf_by_tfi(uint8_t tfi) |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1119 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1120 | return static_cast<gprs_rlcmac_ul_tbf *>( |
| 1121 | tbf_by_tfi(tfi, GPRS_RLCMAC_UL_TBF)); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1122 | } |
| 1123 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1124 | gprs_rlcmac_dl_tbf *gprs_rlcmac_pdch::dl_tbf_by_tfi(uint8_t tfi) |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1125 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1126 | return static_cast<gprs_rlcmac_dl_tbf *>( |
| 1127 | tbf_by_tfi(tfi, GPRS_RLCMAC_DL_TBF)); |
| 1128 | } |
| 1129 | |
| 1130 | /* lookup TBF Entity (by TFI) */ |
| 1131 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_by_tfi(uint8_t tfi, |
| 1132 | enum gprs_rlcmac_tbf_direction dir) |
| 1133 | { |
| 1134 | struct gprs_rlcmac_tbf *tbf; |
| 1135 | |
| 1136 | if (tfi >= 32) |
| 1137 | return NULL; |
| 1138 | |
| 1139 | tbf = m_tbfs[dir][tfi]; |
| 1140 | |
| 1141 | if (!tbf) |
| 1142 | return NULL; |
| 1143 | |
| 1144 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING)) { |
| 1145 | return tbf; |
| 1146 | } |
| 1147 | |
| 1148 | return NULL; |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1149 | } |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1150 | |
| 1151 | void gprs_rlcmac_pdch::attach_tbf(gprs_rlcmac_tbf *tbf) |
| 1152 | { |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1153 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 1154 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1155 | if (m_tbfs[tbf->direction][tbf->tfi()]) |
| 1156 | LOGP(DRLCMAC, LOGL_ERROR, "PDCH(TS %d, TRX %d): " |
| 1157 | "%s has not been detached, overwriting it\n", |
| 1158 | ts_no, trx_no(), |
| 1159 | m_tbfs[tbf->direction][tbf->tfi()]->name()); |
| 1160 | |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1161 | m_num_tbfs[tbf->direction] += 1; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1162 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 1163 | ul_tbf = static_cast<gprs_rlcmac_ul_tbf *>(tbf); |
| 1164 | m_assigned_usf |= 1 << ul_tbf->m_usf[ts_no]; |
| 1165 | } |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1166 | m_assigned_tfi[tbf->direction] |= 1UL << tbf->tfi(); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1167 | m_tbfs[tbf->direction][tbf->tfi()] = tbf; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1168 | |
| 1169 | LOGP(DRLCMAC, LOGL_INFO, "PDCH(TS %d, TRX %d): Attaching %s, %d TBFs, " |
| 1170 | "USFs = %02x, TFIs = %08x.\n", |
| 1171 | ts_no, trx_no(), tbf->name(), m_num_tbfs[tbf->direction], |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1172 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1173 | } |
| 1174 | |
| 1175 | void gprs_rlcmac_pdch::detach_tbf(gprs_rlcmac_tbf *tbf) |
| 1176 | { |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1177 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 1178 | |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1179 | OSMO_ASSERT(m_num_tbfs[tbf->direction] > 0); |
| 1180 | |
| 1181 | m_num_tbfs[tbf->direction] -= 1; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1182 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 1183 | ul_tbf = static_cast<gprs_rlcmac_ul_tbf *>(tbf); |
| 1184 | m_assigned_usf &= ~(1 << ul_tbf->m_usf[ts_no]); |
| 1185 | } |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1186 | m_assigned_tfi[tbf->direction] &= ~(1UL << tbf->tfi()); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1187 | m_tbfs[tbf->direction][tbf->tfi()] = NULL; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1188 | |
| 1189 | LOGP(DRLCMAC, LOGL_INFO, "PDCH(TS %d, TRX %d): Detaching %s, %d TBFs, " |
| 1190 | "USFs = %02x, TFIs = %08x.\n", |
| 1191 | ts_no, trx_no(), tbf->name(), m_num_tbfs[tbf->direction], |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1192 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1193 | } |
Jacob Erlbeck | 23f93a1 | 2015-06-30 08:52:54 +0200 | [diff] [blame] | 1194 | |
| 1195 | void gprs_rlcmac_pdch::reserve(enum gprs_rlcmac_tbf_direction dir) |
| 1196 | { |
| 1197 | m_num_reserved[dir] += 1; |
| 1198 | } |
| 1199 | |
| 1200 | void gprs_rlcmac_pdch::unreserve(enum gprs_rlcmac_tbf_direction dir) |
| 1201 | { |
| 1202 | OSMO_ASSERT(m_num_reserved[dir] > 0); |
| 1203 | m_num_reserved[dir] -= 1; |
| 1204 | } |
| 1205 | |
| 1206 | void gprs_rlcmac_trx::reserve_slots(enum gprs_rlcmac_tbf_direction dir, |
| 1207 | uint8_t slots) |
| 1208 | { |
| 1209 | unsigned i; |
| 1210 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 1211 | if (slots & (1 << i)) |
| 1212 | pdch[i].reserve(dir); |
| 1213 | } |
| 1214 | |
| 1215 | void gprs_rlcmac_trx::unreserve_slots(enum gprs_rlcmac_tbf_direction dir, |
| 1216 | uint8_t slots) |
| 1217 | { |
| 1218 | unsigned i; |
| 1219 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 1220 | if (slots & (1 << i)) |
| 1221 | pdch[i].unreserve(dir); |
| 1222 | } |