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 | 8df447d | 2015-11-07 21:04:40 +0100 | [diff] [blame] | 35 | #include <osmocom/core/stats.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 36 | } |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 37 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 38 | #include <arpa/inet.h> |
| 39 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 40 | #include <errno.h> |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 41 | #include <string.h> |
| 42 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 43 | extern void *tall_pcu_ctx; |
| 44 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 45 | static BTS s_bts; |
| 46 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 47 | /** |
| 48 | * For gcc-4.4 compat do not use extended initializer list but keep the |
| 49 | * order from the enum here. Once we support GCC4.7 and up we can change |
| 50 | * the code below. |
| 51 | */ |
| 52 | static const struct rate_ctr_desc bts_ctr_description[] = { |
| 53 | { "tbf.dl.alloc", "TBF DL Allocated "}, |
| 54 | { "tbf.dl.freed", "TBF DL Freed "}, |
Jacob Erlbeck | 0316dc6 | 2016-01-21 20:12:04 +0100 | [diff] [blame] | 55 | { "tbf.dl.aborted", "TBF DL Aborted "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 56 | { "tbf.ul.alloc", "TBF UL Allocated "}, |
| 57 | { "tbf.ul.freed", "TBF UL Freed "}, |
Jacob Erlbeck | 0316dc6 | 2016-01-21 20:12:04 +0100 | [diff] [blame] | 58 | { "tbf.ul.aborted", "TBF UL Aborted "}, |
Holger Hans Peter Freyther | aa35ba7 | 2013-11-13 15:02:50 +0100 | [diff] [blame] | 59 | { "tbf.reused", "TBF Reused "}, |
Jacob Erlbeck | 5979fe9 | 2015-07-14 14:02:41 +0200 | [diff] [blame] | 60 | { "tbf.alloc.algo-a", "TBF Alloc Algo A "}, |
| 61 | { "tbf.alloc.algo-b", "TBF Alloc Algo B "}, |
Jacob Erlbeck | 9b3d7e0 | 2016-01-19 10:44:42 +0100 | [diff] [blame] | 62 | { "tbf.failed.egprs-only", "TBF Failed EGPRS-only"}, |
Holger Hans Peter Freyther | e9429b5 | 2013-11-13 19:36:57 +0100 | [diff] [blame] | 63 | { "rlc.sent", "RLC Sent "}, |
| 64 | { "rlc.resent", "RLC Resent "}, |
Holger Hans Peter Freyther | ef93bdb | 2013-11-24 00:01:50 +0100 | [diff] [blame] | 65 | { "rlc.restarted", "RLC Restarted "}, |
Holger Hans Peter Freyther | c70aae4 | 2013-11-19 17:09:37 +0100 | [diff] [blame] | 66 | { "rlc.stalled", "RLC Stalled "}, |
Holger Hans Peter Freyther | 092478f | 2013-11-23 01:01:19 +0100 | [diff] [blame] | 67 | { "rlc.nacked", "RLC Nacked "}, |
Jacob Erlbeck | c91c18e | 2015-07-07 09:33:29 +0200 | [diff] [blame] | 68 | { "rlc.ass.timedout", "RLC Assign Timeout "}, |
Jacob Erlbeck | 7c8d39a | 2015-09-07 14:04:56 +0200 | [diff] [blame] | 69 | { "rlc.ass.failed", "RLC Assign Failed "}, |
Jacob Erlbeck | c91c18e | 2015-07-07 09:33:29 +0200 | [diff] [blame] | 70 | { "rlc.ack.timedout", "RLC Ack Timeout "}, |
Jacob Erlbeck | 7c8d39a | 2015-09-07 14:04:56 +0200 | [diff] [blame] | 71 | { "rlc.ack.failed", "RLC Ack Failed "}, |
Jacob Erlbeck | c91c18e | 2015-07-07 09:33:29 +0200 | [diff] [blame] | 72 | { "rlc.rel.timedout", "RLC Release Timeout "}, |
Jacob Erlbeck | be4a08b | 2015-08-25 15:19:31 +0200 | [diff] [blame] | 73 | { "rlc.late-block", "RLC Late Block "}, |
Alexander Couzens | c8fd4b7 | 2016-05-24 11:09:20 +0200 | [diff] [blame] | 74 | { "rlc.sent-dummy", "RLC Sent Dummy "}, |
| 75 | { "rlc.sent-control", "RLC Sent Control "}, |
Alexander Couzens | 7fdbf89 | 2016-05-21 19:45:23 +0200 | [diff] [blame] | 76 | { "rlc.dl_bytes", "RLC DL Bytes "}, |
| 77 | { "rlc.dl_payload_bytes", "RLC DL Payload Bytes "}, |
| 78 | { "rlc.ul_bytes", "RLC UL Bytes "}, |
| 79 | { "rlc.ul_payload_bytes", "RLC UL Payload Bytes "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 80 | { "decode.errors", "Decode Errors "}, |
Holger Hans Peter Freyther | 93e048f | 2013-10-27 10:00:47 +0100 | [diff] [blame] | 81 | { "sba.allocated", "SBA Allocated "}, |
| 82 | { "sba.freed", "SBA Freed "}, |
| 83 | { "sba.timedout", "SBA Timeout "}, |
Holger Hans Peter Freyther | 1997787 | 2013-10-27 10:34:31 +0100 | [diff] [blame] | 84 | { "llc.timeout", "Timedout Frames "}, |
| 85 | { "llc.dropped", "Dropped Frames "}, |
Holger Hans Peter Freyther | b3d5ee2 | 2013-11-13 16:43:26 +0100 | [diff] [blame] | 86 | { "llc.scheduled", "Scheduled Frames "}, |
Alexander Couzens | 7fdbf89 | 2016-05-21 19:45:23 +0200 | [diff] [blame] | 87 | { "llc.dl_bytes", "RLC encapsulated PDUs"}, |
| 88 | { "llc.ul_bytes", "full PDUs received "}, |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 89 | { "rach.requests", "RACH requests "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 90 | }; |
| 91 | |
| 92 | static const struct rate_ctr_group_desc bts_ctrg_desc = { |
| 93 | "bts", |
| 94 | "BTS Statistics", |
Holger Hans Peter Freyther | b8a5426 | 2015-11-07 21:00:00 +0100 | [diff] [blame] | 95 | OSMO_STATS_CLASS_GLOBAL, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 96 | ARRAY_SIZE(bts_ctr_description), |
| 97 | bts_ctr_description, |
| 98 | }; |
| 99 | |
Jacob Erlbeck | f5898a0 | 2015-11-27 19:05:13 +0100 | [diff] [blame] | 100 | static const struct osmo_stat_item_desc bts_stat_item_description[] = { |
| 101 | { "ms.present", "MS Present ", |
| 102 | OSMO_STAT_ITEM_NO_UNIT, 4, 0}, |
| 103 | }; |
| 104 | |
| 105 | static const struct osmo_stat_item_group_desc bts_statg_desc = { |
| 106 | "bts", |
| 107 | "BTS Statistics", |
| 108 | OSMO_STATS_CLASS_GLOBAL, |
| 109 | ARRAY_SIZE(bts_stat_item_description), |
| 110 | bts_stat_item_description, |
| 111 | }; |
| 112 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 113 | BTS* BTS::main_bts() |
| 114 | { |
| 115 | return &s_bts; |
| 116 | } |
| 117 | |
| 118 | struct gprs_rlcmac_bts *BTS::bts_data() |
| 119 | { |
| 120 | return &m_bts; |
| 121 | } |
| 122 | |
| 123 | struct gprs_rlcmac_bts *bts_main_data() |
| 124 | { |
| 125 | return BTS::main_bts()->bts_data(); |
| 126 | } |
| 127 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 128 | struct rate_ctr_group *bts_main_data_stats() |
| 129 | { |
| 130 | return BTS::main_bts()->rate_counters(); |
| 131 | } |
| 132 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 133 | BTS::BTS() |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 134 | : m_cur_fn(0) |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 135 | , m_cur_blk_fn(-1) |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 136 | , m_pollController(*this) |
Holger Hans Peter Freyther | cedf890 | 2013-10-19 20:47:12 +0200 | [diff] [blame] | 137 | , m_sba(*this) |
Jacob Erlbeck | 17214bb | 2015-06-02 14:06:12 +0200 | [diff] [blame] | 138 | , m_ms_store(this) |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 139 | { |
| 140 | memset(&m_bts, 0, sizeof(m_bts)); |
| 141 | m_bts.bts = this; |
Holger Hans Peter Freyther | 4ed1dae | 2013-10-20 10:14:03 +0200 | [diff] [blame] | 142 | |
| 143 | /* initialize back pointers */ |
| 144 | for (size_t trx_no = 0; trx_no < ARRAY_SIZE(m_bts.trx); ++trx_no) { |
| 145 | struct gprs_rlcmac_trx *trx = &m_bts.trx[trx_no]; |
| 146 | trx->trx_no = trx_no; |
| 147 | trx->bts = this; |
| 148 | |
| 149 | for (size_t ts_no = 0; ts_no < ARRAY_SIZE(trx->pdch); ++ts_no) { |
| 150 | struct gprs_rlcmac_pdch *pdch = &trx->pdch[ts_no]; |
| 151 | pdch->ts_no = ts_no; |
| 152 | pdch->trx = trx; |
| 153 | } |
| 154 | } |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 155 | |
| 156 | m_ratectrs = rate_ctr_group_alloc(tall_pcu_ctx, &bts_ctrg_desc, 0); |
Jacob Erlbeck | f5898a0 | 2015-11-27 19:05:13 +0100 | [diff] [blame] | 157 | m_statg = osmo_stat_item_group_alloc(tall_pcu_ctx, &bts_statg_desc, 0); |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 158 | } |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 159 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 160 | BTS::~BTS() |
| 161 | { |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 162 | /* this can cause counter updates and must not be left to the |
| 163 | * m_ms_store's destructor */ |
| 164 | m_ms_store.cleanup(); |
| 165 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 166 | rate_ctr_group_free(m_ratectrs); |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 167 | osmo_stat_item_group_free(m_statg); |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 171 | void BTS::set_current_frame_number(int fn) |
| 172 | { |
Jacob Erlbeck | ac49d09 | 2015-08-27 13:18:24 +0200 | [diff] [blame] | 173 | /* The UL frame numbers lag 3 behind the DL frames and the data |
| 174 | * indication is only sent after all 4 frames of the block have been |
| 175 | * received. Sometimes there is an idle frame between the end of one |
| 176 | * and start of another frame (every 3 blocks). So the timeout should |
| 177 | * definitely be there if we're more than 8 frames past poll_fn. Let's |
Jacob Erlbeck | e77d49f | 2015-08-27 13:28:05 +0200 | [diff] [blame] | 178 | * stay on the safe side and say 13 or more. An additional delay can |
| 179 | * happen due to the block processing time in the DSP, so the delay of |
| 180 | * decoded blocks relative to the timing clock can be much larger. |
| 181 | * Values up to 50 frames have been observed under load. */ |
| 182 | const static int max_delay = 60; |
Jacob Erlbeck | ac49d09 | 2015-08-27 13:18:24 +0200 | [diff] [blame] | 183 | |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 184 | m_cur_fn = fn; |
Jacob Erlbeck | ac49d09 | 2015-08-27 13:18:24 +0200 | [diff] [blame] | 185 | m_pollController.expireTimedout(m_cur_fn, max_delay); |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 186 | } |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 187 | |
Jacob Erlbeck | af75ce8 | 2015-08-26 13:22:28 +0200 | [diff] [blame] | 188 | void BTS::set_current_block_frame_number(int fn, unsigned max_delay) |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 189 | { |
| 190 | int delay = 0; |
| 191 | const int late_block_delay_thresh = 13; |
| 192 | const int fn_update_ok_min_delay = -500; |
| 193 | const int fn_update_ok_max_delay = 0; |
| 194 | |
| 195 | /* frame numbers in the received blocks are assumed to be strongly |
| 196 | * monotonic. */ |
| 197 | if (m_cur_blk_fn >= 0) { |
| 198 | int delta = (fn + 2715648 * 3 / 2 - m_cur_blk_fn) % 2715648 - 2715648/2; |
| 199 | if (delta <= 0) |
| 200 | return; |
| 201 | } |
| 202 | |
| 203 | /* Check block delay vs. the current frame number */ |
| 204 | if (current_frame_number() != 0) |
| 205 | delay = (fn + 2715648 * 3 / 2 - current_frame_number()) % 2715648 |
| 206 | - 2715648/2; |
Jacob Erlbeck | be4a08b | 2015-08-25 15:19:31 +0200 | [diff] [blame] | 207 | if (delay <= -late_block_delay_thresh) { |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 208 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 209 | "Late RLC block, FN delta: %d FN: %d curFN: %d\n", |
| 210 | delay, fn, current_frame_number()); |
Jacob Erlbeck | be4a08b | 2015-08-25 15:19:31 +0200 | [diff] [blame] | 211 | rlc_late_block(); |
| 212 | } |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 213 | |
| 214 | m_cur_blk_fn = fn; |
| 215 | if (delay < fn_update_ok_min_delay || delay > fn_update_ok_max_delay || |
| 216 | current_frame_number() == 0) |
| 217 | m_cur_fn = fn; |
| 218 | |
Jacob Erlbeck | af75ce8 | 2015-08-26 13:22:28 +0200 | [diff] [blame] | 219 | m_pollController.expireTimedout(fn, max_delay); |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 220 | } |
| 221 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 222 | int BTS::add_paging(uint8_t chan_needed, uint8_t *identity_lv) |
| 223 | { |
| 224 | uint8_t l, trx, ts, any_tbf = 0; |
| 225 | struct gprs_rlcmac_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 226 | LListHead<gprs_rlcmac_tbf> *pos; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 227 | struct gprs_rlcmac_paging *pag; |
| 228 | uint8_t slot_mask[8]; |
| 229 | int8_t first_ts; /* must be signed */ |
| 230 | |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 231 | LListHead<gprs_rlcmac_tbf> *tbfs_lists[] = { |
| 232 | &m_ul_tbfs, |
| 233 | &m_dl_tbfs, |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 234 | NULL |
| 235 | }; |
| 236 | |
| 237 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 238 | LOGP(DRLCMAC, LOGL_INFO, "Add RR paging: chan-needed=%d MI=%s\n", |
| 239 | chan_needed, osmo_hexdump(identity_lv + 1, identity_lv[0])); |
| 240 | |
| 241 | /* collect slots to page |
| 242 | * Mark slots for every TBF, but only mark one of it. |
| 243 | * Mark only the first slot found. |
| 244 | * Don't mark, if TBF uses a different slot that is already marked. */ |
| 245 | memset(slot_mask, 0, sizeof(slot_mask)); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 246 | for (l = 0; tbfs_lists[l]; l++) { |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 247 | llist_for_each(pos, tbfs_lists[l]) { |
| 248 | tbf = pos->entry(); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 249 | first_ts = -1; |
| 250 | for (ts = 0; ts < 8; ts++) { |
| 251 | if (tbf->pdch[ts]) { |
| 252 | /* remember the first slot found */ |
| 253 | if (first_ts < 0) |
| 254 | first_ts = ts; |
| 255 | /* break, if we already marked a slot */ |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 256 | if ((slot_mask[tbf->trx->trx_no] & (1 << ts))) |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 257 | break; |
| 258 | } |
| 259 | } |
| 260 | /* mark first slot found, if none is marked already */ |
| 261 | if (ts == 8 && first_ts >= 0) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 262 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s uses " |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 263 | "TRX=%d TS=%d, so we mark\n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 264 | tbf_name(tbf), |
| 265 | tbf->trx->trx_no, first_ts); |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 266 | slot_mask[tbf->trx->trx_no] |= (1 << first_ts); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 267 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 268 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s uses " |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 269 | "already marked TRX=%d TS=%d\n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 270 | tbf_name(tbf), |
| 271 | tbf->trx->trx_no, ts); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 272 | } |
| 273 | } |
| 274 | |
| 275 | /* Now we have a list of marked slots. Every TBF uses at least one |
| 276 | * of these slots. */ |
| 277 | |
| 278 | /* schedule paging to all marked slots */ |
| 279 | for (trx = 0; trx < 8; trx++) { |
| 280 | if (slot_mask[trx] == 0) |
| 281 | continue; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 282 | for (ts = 0; ts < 8; ts++) { |
| 283 | if ((slot_mask[trx] & (1 << ts))) { |
| 284 | /* schedule */ |
| 285 | pag = talloc_zero(tall_pcu_ctx, |
| 286 | struct gprs_rlcmac_paging); |
| 287 | if (!pag) |
| 288 | return -ENOMEM; |
| 289 | pag->chan_needed = chan_needed; |
| 290 | memcpy(pag->identity_lv, identity_lv, |
| 291 | identity_lv[0] + 1); |
| 292 | m_bts.trx[trx].pdch[ts].add_paging(pag); |
| 293 | LOGP(DRLCMAC, LOGL_INFO, "Paging on PACCH of " |
| 294 | "TRX=%d TS=%d\n", trx, ts); |
Holger Hans Peter Freyther | 9446485 | 2013-10-19 18:33:52 +0200 | [diff] [blame] | 295 | any_tbf = 1; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 296 | } |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | if (!any_tbf) |
| 301 | LOGP(DRLCMAC, LOGL_INFO, "No paging, because no TBF\n"); |
| 302 | |
| 303 | return 0; |
| 304 | } |
| 305 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 306 | 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] | 307 | { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 308 | struct gprs_rlcmac_dl_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 309 | LListHead<gprs_rlcmac_tbf> *pos; |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 310 | |
| 311 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 312 | * schedule one downlink control block (with polling) at a FN per TS */ |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 313 | llist_for_each(pos, &m_dl_tbfs) { |
| 314 | tbf = as_dl_tbf(pos->entry()); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 315 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 316 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 317 | && tbf->poll_fn == fn && tbf->trx->trx_no == trx |
Jacob Erlbeck | 8eb1714 | 2016-01-22 17:58:17 +0100 | [diff] [blame] | 318 | && tbf->poll_ts == ts) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 319 | return tbf; |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 320 | } |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 321 | } |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 322 | return NULL; |
| 323 | } |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 324 | 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] | 325 | { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 326 | struct gprs_rlcmac_ul_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 327 | LListHead<gprs_rlcmac_tbf> *pos; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 328 | |
| 329 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 330 | * schedule one downlink control block (with polling) at a FN per TS */ |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 331 | llist_for_each(pos, &m_ul_tbfs) { |
| 332 | tbf = as_ul_tbf(pos->entry()); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 333 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 334 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 335 | && tbf->poll_fn == fn && tbf->trx->trx_no == trx |
Jacob Erlbeck | 8eb1714 | 2016-01-22 17:58:17 +0100 | [diff] [blame] | 336 | && tbf->poll_ts == ts) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 337 | return tbf; |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 338 | } |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 339 | } |
| 340 | return NULL; |
| 341 | } |
| 342 | |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 343 | /* lookup downlink TBF Entity (by TFI) */ |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 344 | 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] | 345 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 346 | if (trx >= 8 || ts >= 8) |
| 347 | return NULL; |
| 348 | |
| 349 | return m_bts.trx[trx].pdch[ts].dl_tbf_by_tfi(tfi); |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | /* lookup uplink TBF Entity (by TFI) */ |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 353 | 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] | 354 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 355 | if (trx >= 8 || ts >= 8) |
Holger Hans Peter Freyther | f63cabd | 2013-10-26 19:10:43 +0200 | [diff] [blame] | 356 | return NULL; |
| 357 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 358 | 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] | 359 | } |
| 360 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 361 | /* |
| 362 | * Search for free TFI and return TFI, TRX. |
| 363 | * This method returns the first TFI that is currently not used in any PDCH of |
| 364 | * a TRX. The first TRX that contains such an TFI is returned. Negative values |
| 365 | * indicate errors. |
| 366 | */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 367 | int BTS::tfi_find_free(enum gprs_rlcmac_tbf_direction dir, |
| 368 | uint8_t *_trx, int8_t use_trx) |
| 369 | { |
| 370 | struct gprs_rlcmac_pdch *pdch; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 371 | uint32_t free_tfis; |
| 372 | bool has_pdch = false; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 373 | uint8_t trx_from, trx_to, trx, ts, tfi; |
| 374 | |
| 375 | if (use_trx >= 0 && use_trx < 8) |
| 376 | trx_from = trx_to = use_trx; |
| 377 | else { |
| 378 | trx_from = 0; |
| 379 | trx_to = 7; |
| 380 | } |
| 381 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 382 | /* find a TFI that is unused on all PDCH */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 383 | for (trx = trx_from; trx <= trx_to; trx++) { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 384 | bool trx_has_pdch = false; |
| 385 | |
| 386 | free_tfis = 0xffffffff; |
| 387 | |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 388 | for (ts = 0; ts < 8; ts++) { |
| 389 | pdch = &m_bts.trx[trx].pdch[ts]; |
| 390 | if (!pdch->is_enabled()) |
| 391 | continue; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 392 | free_tfis &= ~pdch->assigned_tfi(dir); |
| 393 | trx_has_pdch = true; |
| 394 | has_pdch = true; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 395 | } |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 396 | if (trx_has_pdch && free_tfis) |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 397 | break; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 398 | |
| 399 | free_tfis = 0; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 400 | } |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 401 | if (!has_pdch) { |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 402 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
| 403 | return -EINVAL; |
| 404 | } |
| 405 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 406 | if (!free_tfis) { |
| 407 | LOGP(DRLCMAC, LOGL_NOTICE, "No TFI available.\n"); |
| 408 | return -EBUSY; |
| 409 | } |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 410 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 411 | |
| 412 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 413 | "Searching for first unallocated TFI: TRX=%d\n", trx); |
| 414 | |
| 415 | /* find the first */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 416 | for (tfi = 0; tfi < 32; tfi++) { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 417 | if (free_tfis & 1 << tfi) |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 418 | break; |
| 419 | } |
| 420 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 421 | OSMO_ASSERT(tfi < 32); |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 422 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 423 | LOGP(DRLCMAC, LOGL_DEBUG, " Found TFI=%d.\n", tfi); |
| 424 | *_trx = trx; |
| 425 | return tfi; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 426 | } |
| 427 | |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 428 | int BTS::rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn) |
| 429 | { |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 430 | struct gprs_rlcmac_dl_tbf *dl_tbf = NULL; |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 431 | uint8_t plen; |
| 432 | uint32_t tlli; |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 433 | GprsMs *ms; |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 434 | |
| 435 | /* move to IA Rest Octets */ |
| 436 | plen = data[0] >> 2; |
| 437 | data += 1 + plen; |
| 438 | |
| 439 | if ((*data & 0xf0) != 0xd0) { |
| 440 | LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but rest " |
| 441 | "octets do not start with bit sequence 'HH01' " |
| 442 | "(Packet Downlink Assignment)\n"); |
| 443 | return -EINVAL; |
| 444 | } |
| 445 | |
| 446 | /* get TLLI from downlink assignment */ |
| 447 | tlli = (*data++) << 28; |
| 448 | tlli |= (*data++) << 20; |
| 449 | tlli |= (*data++) << 12; |
| 450 | tlli |= (*data++) << 4; |
| 451 | tlli |= (*data++) >> 4; |
| 452 | |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 453 | ms = ms_by_tlli(tlli); |
| 454 | if (ms) |
| 455 | dl_tbf = ms->dl_tbf(); |
Daniel Willmann | 1dac2eb | 2014-08-07 12:37:34 +0200 | [diff] [blame] | 456 | if (!dl_tbf) { |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 457 | LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but TLLI=%08x " |
| 458 | "does not exit\n", tlli); |
| 459 | return -EINVAL; |
| 460 | } |
| 461 | |
| 462 | LOGP(DRLCMAC, LOGL_DEBUG, "Got IMM.ASS confirm for TLLI=%08x\n", tlli); |
| 463 | |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 464 | if (dl_tbf->m_wait_confirm) |
Daniel Willmann | 1dac2eb | 2014-08-07 12:37:34 +0200 | [diff] [blame] | 465 | tbf_timer_start(dl_tbf, 0, Tassign_agch); |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 470 | int BTS::rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta) |
| 471 | { |
Jacob Erlbeck | 1f33294 | 2015-05-04 08:21:17 +0200 | [diff] [blame] | 472 | struct gprs_rlcmac_ul_tbf *tbf = NULL; |
Holger Hans Peter Freyther | f37e514 | 2013-12-25 18:56:34 +0100 | [diff] [blame] | 473 | uint8_t trx_no, ts_no = 0; |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 474 | uint8_t sb = 0; |
| 475 | uint32_t sb_fn = 0; |
| 476 | int rc; |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 477 | int plen; |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 478 | uint8_t usf = 7; |
| 479 | uint8_t tsc; |
| 480 | uint16_t ta; |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 481 | |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 482 | rach_frame(); |
| 483 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 484 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF on RACH, so we provide " |
| 485 | "one:\n"); |
| 486 | if ((ra & 0xf8) == 0x70) { |
| 487 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single block " |
| 488 | "allocation\n"); |
| 489 | sb = 1; |
| 490 | } else if (m_bts.force_two_phase) { |
| 491 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single phase access, " |
| 492 | "but we force two phase access\n"); |
| 493 | sb = 1; |
| 494 | } |
| 495 | if (qta < 0) |
| 496 | qta = 0; |
| 497 | if (qta > 252) |
| 498 | qta = 252; |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 499 | |
| 500 | ta = qta >> 2; |
| 501 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 502 | if (sb) { |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 503 | rc = sba()->alloc(&trx_no, &ts_no, &sb_fn, ta); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 504 | if (rc < 0) |
| 505 | return rc; |
| 506 | LOGP(DRLCMAC, LOGL_DEBUG, "RX: [PCU <- BTS] RACH qbit-ta=%d " |
Jacob Erlbeck | ddfc0d5 | 2015-05-27 13:03:15 +0200 | [diff] [blame] | 507 | "ra=0x%02x, Fn=%d (%d,%d,%d), SBFn=%d\n", |
| 508 | qta, ra, |
| 509 | Fn, (Fn / (26 * 51)) % 32, Fn % 51, Fn % 26, |
| 510 | sb_fn); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 511 | LOGP(DRLCMAC, LOGL_INFO, "TX: Immediate Assignment Uplink " |
| 512 | "(AGCH)\n"); |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 513 | tsc = m_bts.trx[trx_no].pdch[ts_no].tsc; |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 514 | } else { |
| 515 | // Create new TBF |
Neels Hofmeyr | d32aa03 | 2016-06-20 18:17:03 +0200 | [diff] [blame] | 516 | #warning "Copy and paste with other routines.." |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 517 | /* set class to 0, since we don't know the multislot class yet */ |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 518 | tbf = tbf_alloc_ul_tbf(&m_bts, NULL, -1, 0, 0, 1); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 519 | if (!tbf) { |
Holger Hans Peter Freyther | 90b87ea | 2013-10-27 10:38:31 +0100 | [diff] [blame] | 520 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 521 | /* FIXME: send reject */ |
| 522 | return -EBUSY; |
| 523 | } |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 524 | tbf->set_ta(ta); |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 525 | tbf->set_state(GPRS_RLCMAC_FLOW); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 526 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_CCCH); |
| 527 | tbf_timer_start(tbf, 3169, m_bts.t3169, 0); |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 528 | LOGP(DRLCMAC, LOGL_DEBUG, "%s [UPLINK] START\n", |
| 529 | tbf_name(tbf)); |
| 530 | LOGP(DRLCMAC, LOGL_DEBUG, "%s RX: [PCU <- BTS] RACH " |
| 531 | "qbit-ta=%d ra=0x%02x, Fn=%d (%d,%d,%d)\n", |
| 532 | tbf_name(tbf), |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 533 | 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] | 534 | LOGP(DRLCMAC, LOGL_INFO, "%s TX: START Immediate " |
| 535 | "Assignment Uplink (AGCH)\n", tbf_name(tbf)); |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 536 | trx_no = tbf->trx->trx_no; |
Jacob Erlbeck | 29e3a2f | 2016-02-05 19:04:23 +0100 | [diff] [blame] | 537 | ts_no = tbf->first_ts; |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 538 | usf = tbf->m_usf[ts_no]; |
| 539 | tsc = tbf->tsc(); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 540 | } |
| 541 | bitvec *immediate_assignment = bitvec_alloc(22) /* without plen */; |
| 542 | bitvec_unhex(immediate_assignment, |
| 543 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 544 | |
| 545 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 546 | " - TRX=%d (%d) TS=%d TA=%d TSC=%d TFI=%d USF=%d\n", |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 547 | trx_no, m_bts.trx[trx_no].arfcn, ts_no, ta, tsc, |
| 548 | tbf ? tbf->tfi() : -1, usf); |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 549 | |
| 550 | plen = Encoding::write_immediate_assignment( |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 551 | tbf, immediate_assignment, 0, ra, Fn, ta, |
| 552 | m_bts.trx[trx_no].arfcn, ts_no, tsc, usf, 0, sb_fn, |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 553 | m_bts.alpha, m_bts.gamma, -1); |
| 554 | |
Jacob Erlbeck | f1a7b8f | 2016-02-01 20:59:04 +0100 | [diff] [blame] | 555 | if (plen >= 0) { |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 556 | pcu_l1if_tx_agch(immediate_assignment, plen); |
Jacob Erlbeck | f1a7b8f | 2016-02-01 20:59:04 +0100 | [diff] [blame] | 557 | if (tbf) |
| 558 | tbf->set_state(GPRS_RLCMAC_WAIT_ASSIGN); |
| 559 | } |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 560 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 561 | bitvec_free(immediate_assignment); |
| 562 | |
| 563 | return 0; |
| 564 | } |
| 565 | |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 566 | /* depending on the current TBF, we assign on PACCH or AGCH */ |
| 567 | void BTS::trigger_dl_ass( |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 568 | struct gprs_rlcmac_dl_tbf *dl_tbf, |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 569 | struct gprs_rlcmac_tbf *old_tbf) |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 570 | { |
| 571 | /* stop pending timer */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 572 | dl_tbf->stop_timer(); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 573 | |
| 574 | /* check for downlink tbf: */ |
| 575 | if (old_tbf) { |
| 576 | LOGP(DRLCMAC, LOGL_DEBUG, "Send dowlink assignment on " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 577 | "PACCH, because %s exists\n", tbf_name(old_tbf)); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 578 | old_tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 579 | |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 580 | old_tbf->was_releasing = old_tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE); |
| 581 | |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 582 | /* change state */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 583 | dl_tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Jacob Erlbeck | 9876a3b | 2016-01-29 18:51:04 +0100 | [diff] [blame] | 584 | if (!(dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) |
| 585 | dl_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 586 | /* start timer */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 587 | tbf_timer_start(dl_tbf, 0, Tassign_pacch); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 588 | } else { |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 589 | 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] | 590 | 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] | 591 | /* change state */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 592 | dl_tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 593 | dl_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_CCCH); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 594 | /* send immediate assignment */ |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 595 | dl_tbf->bts->snd_dl_ass(dl_tbf, 0, dl_tbf->imsi()); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 596 | dl_tbf->m_wait_confirm = 1; |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 597 | } |
| 598 | } |
| 599 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 600 | void BTS::snd_dl_ass(gprs_rlcmac_tbf *tbf, uint8_t poll, const char *imsi) |
| 601 | { |
| 602 | int plen; |
Jacob Erlbeck | 29e3a2f | 2016-02-05 19:04:23 +0100 | [diff] [blame] | 603 | unsigned int ts = tbf->first_ts; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 604 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 605 | 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] | 606 | bitvec *immediate_assignment = bitvec_alloc(22); /* without plen */ |
| 607 | bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 608 | /* use request reference that has maximum distance to current time, |
| 609 | * so the assignment will not conflict with possible RACH requests. */ |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 610 | LOGP(DRLCMAC, LOGL_DEBUG, " - TRX=%d (%d) TS=%d TA=%d pollFN=%d\n", |
| 611 | tbf->trx->trx_no, tbf->trx->arfcn, |
| 612 | ts, tbf->ta(), poll ? tbf->poll_fn : -1); |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 613 | plen = Encoding::write_immediate_assignment(tbf, immediate_assignment, 1, 125, |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 614 | (tbf->pdch[ts]->last_rts_fn + 21216) % 2715648, tbf->ta(), |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 615 | tbf->trx->arfcn, ts, tbf->tsc(), 7, poll, |
| 616 | tbf->poll_fn, m_bts.alpha, m_bts.gamma, -1); |
Jacob Erlbeck | f1a7b8f | 2016-02-01 20:59:04 +0100 | [diff] [blame] | 617 | if (plen >= 0) { |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 618 | pcu_l1if_tx_pch(immediate_assignment, plen, imsi); |
Jacob Erlbeck | f1a7b8f | 2016-02-01 20:59:04 +0100 | [diff] [blame] | 619 | tbf->set_state(GPRS_RLCMAC_WAIT_ASSIGN); |
| 620 | } |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 621 | bitvec_free(immediate_assignment); |
| 622 | } |
| 623 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 624 | |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 625 | GprsMs *BTS::ms_alloc(uint8_t ms_class, uint8_t egprs_ms_class) |
Jacob Erlbeck | cb1b494 | 2015-06-19 10:59:58 +0200 | [diff] [blame] | 626 | { |
| 627 | GprsMs *ms; |
| 628 | ms = ms_store().create_ms(); |
| 629 | |
| 630 | ms->set_timeout(m_bts.ms_idle_sec); |
| 631 | ms->set_ms_class(ms_class); |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 632 | ms->set_egprs_ms_class(egprs_ms_class); |
Jacob Erlbeck | cb1b494 | 2015-06-19 10:59:58 +0200 | [diff] [blame] | 633 | |
| 634 | return ms; |
| 635 | } |
| 636 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 637 | /* |
| 638 | * PDCH code below. TODO: move to a separate file |
| 639 | */ |
| 640 | |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 641 | void gprs_rlcmac_pdch::enable() |
| 642 | { |
| 643 | /* TODO: Check if there are still allocated resources.. */ |
| 644 | INIT_LLIST_HEAD(&paging_list); |
| 645 | m_is_enabled = 1; |
| 646 | } |
| 647 | |
| 648 | void gprs_rlcmac_pdch::disable() |
| 649 | { |
| 650 | /* TODO.. kick free_resources once we know the TRX/TS we are on */ |
| 651 | m_is_enabled = 0; |
| 652 | } |
| 653 | |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 654 | void gprs_rlcmac_pdch::free_resources() |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 655 | { |
| 656 | struct gprs_rlcmac_paging *pag; |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 657 | |
| 658 | /* we are not enabled. there should be no resources */ |
| 659 | if (!is_enabled()) |
| 660 | return; |
| 661 | |
| 662 | /* kick all TBF on slot */ |
| 663 | gprs_rlcmac_tbf::free_all(this); |
| 664 | |
| 665 | /* flush all pending paging messages */ |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 666 | while ((pag = dequeue_paging())) |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 667 | talloc_free(pag); |
| 668 | |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 669 | trx->bts->sba()->free_resources(this); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 670 | } |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 671 | |
| 672 | struct gprs_rlcmac_paging *gprs_rlcmac_pdch::dequeue_paging() |
| 673 | { |
| 674 | struct gprs_rlcmac_paging *pag; |
| 675 | |
| 676 | if (llist_empty(&paging_list)) |
| 677 | return NULL; |
| 678 | pag = llist_entry(paging_list.next, struct gprs_rlcmac_paging, list); |
| 679 | llist_del(&pag->list); |
| 680 | |
| 681 | return pag; |
| 682 | } |
| 683 | |
| 684 | struct msgb *gprs_rlcmac_pdch::packet_paging_request() |
| 685 | { |
| 686 | struct gprs_rlcmac_paging *pag; |
| 687 | struct msgb *msg; |
| 688 | unsigned wp = 0, len; |
| 689 | |
| 690 | /* no paging, no message */ |
| 691 | pag = dequeue_paging(); |
| 692 | if (!pag) |
| 693 | return NULL; |
| 694 | |
| 695 | LOGP(DRLCMAC, LOGL_DEBUG, "Scheduling paging\n"); |
| 696 | |
| 697 | /* alloc message */ |
| 698 | msg = msgb_alloc(23, "pag ctrl block"); |
| 699 | if (!msg) { |
| 700 | talloc_free(pag); |
| 701 | return NULL; |
| 702 | } |
| 703 | bitvec *pag_vec = bitvec_alloc(23); |
| 704 | if (!pag_vec) { |
| 705 | msgb_free(msg); |
| 706 | talloc_free(pag); |
| 707 | return NULL; |
| 708 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 709 | wp = Encoding::write_packet_paging_request(pag_vec); |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 710 | |
| 711 | /* loop until message is full */ |
| 712 | while (pag) { |
| 713 | /* try to add paging */ |
| 714 | if ((pag->identity_lv[1] & 0x07) == 4) { |
| 715 | /* TMSI */ |
| 716 | LOGP(DRLCMAC, LOGL_DEBUG, "- TMSI=0x%08x\n", |
| 717 | ntohl(*((uint32_t *)(pag->identity_lv + 1)))); |
| 718 | len = 1 + 1 + 1 + 32 + 2 + 1; |
| 719 | if (pag->identity_lv[0] != 5) { |
| 720 | LOGP(DRLCMAC, LOGL_ERROR, "TMSI paging with " |
| 721 | "MI != 5 octets!\n"); |
| 722 | goto continue_next; |
| 723 | } |
| 724 | } else { |
| 725 | /* MI */ |
| 726 | LOGP(DRLCMAC, LOGL_DEBUG, "- MI=%s\n", |
| 727 | osmo_hexdump(pag->identity_lv + 1, |
| 728 | pag->identity_lv[0])); |
| 729 | len = 1 + 1 + 1 + 4 + (pag->identity_lv[0]<<3) + 2 + 1; |
| 730 | if (pag->identity_lv[0] > 8) { |
| 731 | LOGP(DRLCMAC, LOGL_ERROR, "Paging with " |
| 732 | "MI > 8 octets!\n"); |
| 733 | goto continue_next; |
| 734 | } |
| 735 | } |
| 736 | if (wp + len > 184) { |
| 737 | LOGP(DRLCMAC, LOGL_DEBUG, "- Does not fit, so schedule " |
| 738 | "next time\n"); |
| 739 | /* put back paging record, because does not fit */ |
| 740 | llist_add_tail(&pag->list, &paging_list); |
| 741 | break; |
| 742 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 743 | 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] | 744 | pag->identity_lv + 1, pag->chan_needed); |
| 745 | |
| 746 | continue_next: |
| 747 | talloc_free(pag); |
| 748 | pag = dequeue_paging(); |
| 749 | } |
| 750 | |
| 751 | bitvec_pack(pag_vec, msgb_put(msg, 23)); |
| 752 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| 753 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Paging Request +++++++++++++++++++++++++\n"); |
| 754 | decode_gsm_rlcmac_downlink(pag_vec, mac_control_block); |
| 755 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 756 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Paging Request -------------------------\n"); |
| 757 | bitvec_free(pag_vec); |
| 758 | talloc_free(mac_control_block); |
| 759 | |
| 760 | return msg; |
| 761 | } |
| 762 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 763 | void gprs_rlcmac_pdch::add_paging(struct gprs_rlcmac_paging *pag) |
| 764 | { |
| 765 | llist_add(&pag->list, &paging_list); |
| 766 | } |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 767 | |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 768 | 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] | 769 | { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 770 | struct gprs_rlcmac_tbf *tbf, *new_tbf; |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 771 | uint32_t tlli = 0; |
| 772 | |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 773 | tlli = packet->TLLI; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 774 | tbf = bts()->ul_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 775 | if (!tbf) |
| 776 | tbf = bts()->dl_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 777 | |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 778 | if (!tbf) { |
| 779 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK with " |
Holger Hans Peter Freyther | 15bb1a2 | 2013-10-27 12:30:46 +0100 | [diff] [blame] | 780 | "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] | 781 | fn, tlli, trx_no(), ts_no); |
| 782 | return; |
| 783 | } |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 784 | tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 785 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 786 | 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] | 787 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
| 788 | |
| 789 | /* check if this control ack belongs to packet uplink ack */ |
| 790 | 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] | 791 | 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] | 792 | tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE; |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 793 | if ((tbf->state_flags & |
| 794 | (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) { |
| 795 | tbf->state_flags &= |
| 796 | ~(1 << GPRS_RLCMAC_FLAG_TO_UL_ACK); |
| 797 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered uplink " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 798 | "ack for UL %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 799 | } |
| 800 | tbf_free(tbf); |
| 801 | return; |
| 802 | } |
| 803 | 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] | 804 | 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] | 805 | /* reset N3105 */ |
| 806 | tbf->n3105 = 0; |
| 807 | tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 808 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 809 | new_tbf = tbf->ms() ? tbf->ms()->dl_tbf() : NULL; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 810 | if (!new_tbf) { |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 811 | LOGP(DRLCMAC, LOGL_ERROR, "Got ACK, but DL " |
Holger Hans Peter Freyther | 875fc89 | 2013-10-27 13:35:46 +0100 | [diff] [blame] | 812 | "TBF is gone TLLI=0x%08x\n", tlli); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 813 | return; |
| 814 | } |
Jacob Erlbeck | 7d5157e | 2016-02-01 18:15:35 +0100 | [diff] [blame] | 815 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE) && |
| 816 | tbf->direction == new_tbf->direction) |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 817 | tbf_free(tbf); |
| 818 | |
Jacob Erlbeck | 9876a3b | 2016-01-29 18:51:04 +0100 | [diff] [blame] | 819 | if ((new_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) { |
| 820 | /* We now know that the PACCH really existed */ |
| 821 | LOGP(DRLCMAC, LOGL_INFO, |
| 822 | "The TBF has been confirmed on the PACCH, " |
| 823 | "changed type from CCCH to PACCH for %s\n", |
| 824 | tbf_name(new_tbf)); |
| 825 | new_tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH); |
| 826 | new_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
| 827 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 828 | new_tbf->set_state(GPRS_RLCMAC_FLOW); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 829 | /* stop pending assignment timer */ |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 830 | new_tbf->stop_timer(); |
| 831 | if ((new_tbf->state_flags & |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 832 | (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 833 | new_tbf->state_flags &= |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 834 | ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ASS); |
| 835 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered downlink " |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 836 | "assignment for %s\n", tbf_name(new_tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 837 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 838 | tbf_assign_control_ts(new_tbf); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 839 | return; |
| 840 | } |
| 841 | 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] | 842 | 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] | 843 | /* reset N3105 */ |
| 844 | tbf->n3105 = 0; |
| 845 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 846 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 847 | new_tbf = tbf->ms() ? tbf->ms()->ul_tbf() : NULL; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 848 | if (!new_tbf) { |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 849 | LOGP(DRLCMAC, LOGL_ERROR, "Got ACK, but UL " |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 850 | "TBF is gone TLLI=0x%08x\n", tlli); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 851 | return; |
| 852 | } |
Jacob Erlbeck | 7d5157e | 2016-02-01 18:15:35 +0100 | [diff] [blame] | 853 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE) && |
| 854 | tbf->direction == new_tbf->direction) |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 855 | tbf_free(tbf); |
| 856 | |
| 857 | new_tbf->set_state(GPRS_RLCMAC_FLOW); |
| 858 | if ((new_tbf->state_flags & |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 859 | (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 860 | new_tbf->state_flags &= |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 861 | ~(1 << GPRS_RLCMAC_FLAG_TO_UL_ASS); |
| 862 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered uplink " |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 863 | "assignment for UL %s\n", tbf_name(new_tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 864 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 865 | tbf_assign_control_ts(new_tbf); |
Jacob Erlbeck | c8cbfc2 | 2015-09-01 11:38:40 +0200 | [diff] [blame] | 866 | /* there might be LLC packets waiting in the queue, but the DL |
| 867 | * TBF might have been released while the UL TBF has been |
| 868 | * established */ |
| 869 | if (new_tbf->ms()->need_dl_tbf()) |
| 870 | new_tbf->establish_dl_tbf_on_pacch(); |
| 871 | |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 872 | return; |
| 873 | } |
| 874 | LOGP(DRLCMAC, LOGL_ERROR, "Error: received PACET CONTROL ACK " |
| 875 | "at no request\n"); |
| 876 | } |
| 877 | |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 878 | static void get_rx_qual_meas(struct pcu_l1_meas *meas, uint8_t rx_qual_enc) |
| 879 | { |
| 880 | static const int16_t rx_qual_map[] = { |
| 881 | 0, /* 0,14 % */ |
| 882 | 0, /* 0,28 % */ |
| 883 | 1, /* 0,57 % */ |
| 884 | 1, /* 1,13 % */ |
| 885 | 2, /* 2,26 % */ |
| 886 | 5, /* 4,53 % */ |
| 887 | 9, /* 9,05 % */ |
| 888 | 18, /* 18,10 % */ |
| 889 | }; |
| 890 | |
| 891 | meas->set_ms_rx_qual(rx_qual_map[ |
| 892 | OSMO_MIN(rx_qual_enc, ARRAY_SIZE(rx_qual_map)-1) |
| 893 | ]); |
| 894 | } |
| 895 | |
| 896 | static void get_meas(struct pcu_l1_meas *meas, |
| 897 | const Packet_Resource_Request_t *qr) |
| 898 | { |
| 899 | unsigned i; |
| 900 | |
| 901 | meas->set_ms_c_value(qr->C_VALUE); |
| 902 | if (qr->Exist_SIGN_VAR) |
| 903 | meas->set_ms_sign_var((qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
| 904 | |
| 905 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->Slot), ARRAY_SIZE(meas->ts)); i++) |
| 906 | { |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 907 | if (qr->Slot[i].Exist) { |
| 908 | LOGP(DRLCMAC, LOGL_INFO, |
| 909 | "Packet resource request: i_level[%d] = %d\n", |
| 910 | i, qr->Slot[i].I_LEVEL); |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 911 | meas->set_ms_i_level(i, -2 * qr->Slot[i].I_LEVEL); |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 912 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 913 | } |
| 914 | } |
| 915 | |
| 916 | static void get_meas(struct pcu_l1_meas *meas, |
| 917 | const Channel_Quality_Report_t *qr) |
| 918 | { |
| 919 | unsigned i; |
| 920 | |
| 921 | get_rx_qual_meas(meas, qr->RXQUAL); |
| 922 | meas->set_ms_c_value(qr->C_VALUE); |
| 923 | meas->set_ms_sign_var((qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
| 924 | |
| 925 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->Slot), ARRAY_SIZE(meas->ts)); i++) |
| 926 | { |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 927 | if (qr->Slot[i].Exist) { |
| 928 | LOGP(DRLCMAC, LOGL_INFO, |
| 929 | "Channel quality report: i_level[%d] = %d\n", |
| 930 | i, qr->Slot[i].I_LEVEL_TN); |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 931 | 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] | 932 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 933 | } |
| 934 | } |
| 935 | |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 936 | 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] | 937 | { |
| 938 | int8_t tfi = 0; /* must be signed */ |
Daniel Willmann | 6c813fc | 2014-07-30 19:12:27 +0200 | [diff] [blame] | 939 | struct gprs_rlcmac_dl_tbf *tbf; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 940 | int rc; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 941 | struct pcu_l1_meas meas; |
Jacob Erlbeck | 419b034 | 2016-01-14 13:40:01 +0100 | [diff] [blame] | 942 | int num_blocks; |
| 943 | uint8_t bits_data[RLC_GPRS_WS/8]; |
| 944 | bitvec bits; |
| 945 | int bsn_begin, bsn_end; |
| 946 | char show_bits[RLC_GPRS_WS + 1]; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 947 | |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 948 | tfi = ack_nack->DOWNLINK_TFI; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 949 | 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] | 950 | if (!tbf) { |
| 951 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " |
| 952 | "unknown FN=%u TFI=%d (TRX %d TS %d)\n", |
| 953 | fn, tfi, trx_no(), ts_no); |
| 954 | return; |
| 955 | } |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 956 | if (tbf->tfi() != tfi) { |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 957 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " |
| 958 | "wrong TFI=%d, ignoring!\n", tfi); |
| 959 | return; |
| 960 | } |
| 961 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_DL_ACK); |
| 962 | if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) { |
| 963 | tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ACK); |
| 964 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered downlink ack " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 965 | "for %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 966 | } |
| 967 | /* reset N3105 */ |
| 968 | tbf->n3105 = 0; |
| 969 | tbf->stop_t3191(); |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 970 | 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] | 971 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 972 | |
Jacob Erlbeck | 419b034 | 2016-01-14 13:40:01 +0100 | [diff] [blame] | 973 | bits.data = bits_data; |
| 974 | bits.data_len = sizeof(bits_data); |
| 975 | bits.cur_bit = 0; |
| 976 | |
| 977 | num_blocks = Decoding::decode_gprs_acknack_bits( |
| 978 | &ack_nack->Ack_Nack_Description, &bits, |
| 979 | &bsn_begin, &bsn_end, &tbf->m_window); |
| 980 | |
| 981 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 982 | "Got GPRS DL ACK bitmap: SSN: %d, BSN %d to %d - 1 (%d blocks), " |
| 983 | "\"%s\"\n", |
| 984 | ack_nack->Ack_Nack_Description.STARTING_SEQUENCE_NUMBER, |
| 985 | bsn_begin, bsn_end, num_blocks, |
| 986 | (Decoding::extract_rbb(&bits, show_bits), show_bits)); |
| 987 | |
Daniel Willmann | fc03bbe | 2014-05-30 17:57:59 +0200 | [diff] [blame] | 988 | rc = tbf->rcvd_dl_ack( |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 989 | ack_nack->Ack_Nack_Description.FINAL_ACK_INDICATION, |
Jacob Erlbeck | 419b034 | 2016-01-14 13:40:01 +0100 | [diff] [blame] | 990 | bsn_begin, &bits); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 991 | if (rc == 1) { |
| 992 | tbf_free(tbf); |
| 993 | return; |
| 994 | } |
| 995 | /* check for channel request */ |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 996 | if (ack_nack->Exist_Channel_Request_Description) { |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 997 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " |
| 998 | "message, so we provide one:\n"); |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 999 | |
| 1000 | /* This call will register the new TBF with the MS on success */ |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 1001 | tbf_alloc_ul(bts_data(), tbf->trx->trx_no, |
| 1002 | tbf->ms_class(), tbf->ms()->egprs_ms_class(), |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 1003 | tbf->tlli(), tbf->ta(), tbf->ms()); |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 1004 | |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1005 | /* schedule uplink assignment */ |
| 1006 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 1007 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1008 | /* get measurements */ |
| 1009 | if (tbf->ms()) { |
| 1010 | get_meas(&meas, &ack_nack->Channel_Quality_Report); |
| 1011 | tbf->ms()->update_l1_meas(&meas); |
| 1012 | } |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1013 | } |
| 1014 | |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1015 | void gprs_rlcmac_pdch::rcv_control_egprs_dl_ack_nack(EGPRS_PD_AckNack_t *ack_nack, uint32_t fn) |
| 1016 | { |
| 1017 | int8_t tfi = 0; /* must be signed */ |
| 1018 | struct gprs_rlcmac_dl_tbf *tbf; |
| 1019 | struct pcu_l1_meas meas; |
| 1020 | int rc; |
| 1021 | int num_blocks; |
| 1022 | uint8_t bits_data[RLC_EGPRS_MAX_WS/8]; |
| 1023 | char show_bits[RLC_EGPRS_MAX_WS + 1]; |
| 1024 | bitvec bits; |
| 1025 | int bsn_begin, bsn_end; |
| 1026 | |
| 1027 | tfi = ack_nack->DOWNLINK_TFI; |
| 1028 | tbf = bts()->dl_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 1029 | if (!tbf) { |
| 1030 | LOGP(DRLCMAC, LOGL_NOTICE, "EGPRS PACKET DOWNLINK ACK with " |
| 1031 | "unknown FN=%u TFI=%d (TRX %d TS %d)\n", |
| 1032 | fn, tfi, trx_no(), ts_no); |
| 1033 | return; |
| 1034 | } |
| 1035 | if (tbf->tfi() != tfi) { |
| 1036 | LOGP(DRLCMAC, LOGL_NOTICE, "EGPRS PACKET DOWNLINK ACK with " |
| 1037 | "wrong TFI=%d, ignoring!\n", tfi); |
| 1038 | return; |
| 1039 | } |
| 1040 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_DL_ACK); |
| 1041 | if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) { |
| 1042 | tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ACK); |
| 1043 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered EGPRS downlink ack " |
| 1044 | "for %s\n", tbf_name(tbf)); |
| 1045 | } |
| 1046 | /* reset N3105 */ |
| 1047 | tbf->n3105 = 0; |
| 1048 | tbf->stop_t3191(); |
| 1049 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 1050 | "RX: [PCU <- BTS] %s EGPRS Packet Downlink Ack/Nack\n", |
| 1051 | tbf_name(tbf)); |
| 1052 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
| 1053 | |
| 1054 | LOGP(DRLCMAC, LOGL_DEBUG, "EGPRS ACK/NACK: " |
| 1055 | "ut: %d, final: %d, bow: %d, eow: %d, ssn: %d, have_crbb: %d, " |
| 1056 | "urbb_len:%d, %p, %p, %d, %d, win: %d-%d, urbb: %s\n", |
| 1057 | (int)ack_nack->EGPRS_AckNack.UnionType, |
| 1058 | (int)ack_nack->EGPRS_AckNack.Desc.FINAL_ACK_INDICATION, |
| 1059 | (int)ack_nack->EGPRS_AckNack.Desc.BEGINNING_OF_WINDOW, |
| 1060 | (int)ack_nack->EGPRS_AckNack.Desc.END_OF_WINDOW, |
| 1061 | (int)ack_nack->EGPRS_AckNack.Desc.STARTING_SEQUENCE_NUMBER, |
| 1062 | (int)ack_nack->EGPRS_AckNack.Desc.Exist_CRBB, |
| 1063 | (int)ack_nack->EGPRS_AckNack.Desc.URBB_LENGTH, |
| 1064 | (void *)&ack_nack->EGPRS_AckNack.UnionType, |
| 1065 | (void *)&ack_nack->EGPRS_AckNack.Desc, |
| 1066 | (int)offsetof(EGPRS_AckNack_t, Desc), |
| 1067 | (int)offsetof(EGPRS_AckNack_w_len_t, Desc), |
| 1068 | tbf->m_window.v_a(), |
| 1069 | tbf->m_window.v_s(), |
| 1070 | osmo_hexdump((const uint8_t *)&ack_nack->EGPRS_AckNack.Desc.URBB, |
| 1071 | sizeof(ack_nack->EGPRS_AckNack.Desc.URBB))); |
| 1072 | |
| 1073 | bits.data = bits_data; |
| 1074 | bits.data_len = sizeof(bits_data); |
| 1075 | bits.cur_bit = 0; |
| 1076 | |
| 1077 | num_blocks = Decoding::decode_egprs_acknack_bits( |
| 1078 | &ack_nack->EGPRS_AckNack.Desc, &bits, |
| 1079 | &bsn_begin, &bsn_end, &tbf->m_window); |
| 1080 | |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1081 | LOGP(DRLCMAC, LOGL_DEBUG, |
Jacob Erlbeck | d7630f2 | 2016-01-14 18:05:44 +0100 | [diff] [blame] | 1082 | "Got EGPRS DL ACK bitmap: SSN: %d, BSN %d to %d - 1 (%d blocks), " |
| 1083 | "\"%s\"\n", |
| 1084 | ack_nack->EGPRS_AckNack.Desc.STARTING_SEQUENCE_NUMBER, |
| 1085 | bsn_begin, bsn_end, num_blocks, |
| 1086 | (Decoding::extract_rbb(&bits, show_bits), show_bits) |
| 1087 | ); |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1088 | |
Jacob Erlbeck | d7630f2 | 2016-01-14 18:05:44 +0100 | [diff] [blame] | 1089 | rc = tbf->rcvd_dl_ack( |
| 1090 | ack_nack->EGPRS_AckNack.Desc.FINAL_ACK_INDICATION, |
| 1091 | bsn_begin, &bits); |
| 1092 | if (rc == 1) { |
| 1093 | tbf_free(tbf); |
| 1094 | return; |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1095 | } |
| 1096 | |
| 1097 | /* check for channel request */ |
| 1098 | if (ack_nack->Exist_ChannelRequestDescription) { |
| 1099 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " |
| 1100 | "message, so we provide one:\n"); |
| 1101 | |
| 1102 | /* This call will register the new TBF with the MS on success */ |
| 1103 | tbf_alloc_ul(bts_data(), tbf->trx->trx_no, |
| 1104 | tbf->ms_class(), tbf->ms()->egprs_ms_class(), |
| 1105 | tbf->tlli(), tbf->ta(), tbf->ms()); |
| 1106 | |
| 1107 | /* schedule uplink assignment */ |
| 1108 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 1109 | } |
| 1110 | |
| 1111 | /* get measurements */ |
| 1112 | if (tbf->ms()) { |
| 1113 | /* TODO: Implement Measurements parsing for EGPRS */ |
| 1114 | /* |
| 1115 | get_meas(&meas, &ack_nack->Channel_Quality_Report); |
| 1116 | tbf->ms()->update_l1_meas(&meas); |
| 1117 | */ |
| 1118 | } |
| 1119 | } |
| 1120 | |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 1121 | 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] | 1122 | { |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1123 | struct gprs_rlcmac_sba *sba; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1124 | |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 1125 | if (request->ID.UnionType) { |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 1126 | struct gprs_rlcmac_ul_tbf *ul_tbf = NULL; |
| 1127 | struct gprs_rlcmac_dl_tbf *dl_tbf = NULL; |
Holger Hans Peter Freyther | 8021644 | 2013-10-27 15:42:25 +0100 | [diff] [blame] | 1128 | uint32_t tlli = request->ID.u.TLLI; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1129 | uint8_t ms_class = 0; |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1130 | uint8_t egprs_ms_class = 0; |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 1131 | uint8_t ta = 0; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1132 | struct pcu_l1_meas meas; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1133 | |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 1134 | GprsMs *ms = bts()->ms_by_tlli(tlli); |
| 1135 | /* Keep the ms, even if it gets idle temporarily */ |
| 1136 | GprsMs::Guard guard(ms); |
| 1137 | |
| 1138 | if (ms) { |
| 1139 | ul_tbf = ms->ul_tbf(); |
| 1140 | dl_tbf = ms->dl_tbf(); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 1141 | ta = ms->ta(); |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 1142 | } |
| 1143 | |
Jacob Erlbeck | 5f93f85 | 2016-01-21 20:48:39 +0100 | [diff] [blame] | 1144 | /* We got a RACH so the MS was in packet idle mode and thus |
| 1145 | * didn't have any active TBFs */ |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1146 | if (ul_tbf) { |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1147 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 1148 | "TLLI=0x%08x while %s still " |
Jacob Erlbeck | 537b149 | 2015-08-21 17:52:07 +0200 | [diff] [blame] | 1149 | "exists. Killing pending UL TBF\n", |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1150 | tlli, tbf_name(ul_tbf)); |
| 1151 | tbf_free(ul_tbf); |
| 1152 | ul_tbf = NULL; |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1153 | } |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1154 | |
Jacob Erlbeck | cf6ae9d | 2015-08-31 14:32:05 +0200 | [diff] [blame] | 1155 | if (dl_tbf) { |
| 1156 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
| 1157 | "TLLI=0x%08x while %s still exists. " |
Jacob Erlbeck | ae0a799 | 2015-09-01 11:28:25 +0200 | [diff] [blame] | 1158 | "Release pending DL TBF\n", tlli, |
Jacob Erlbeck | cf6ae9d | 2015-08-31 14:32:05 +0200 | [diff] [blame] | 1159 | tbf_name(dl_tbf)); |
Jacob Erlbeck | 5f93f85 | 2016-01-21 20:48:39 +0100 | [diff] [blame] | 1160 | tbf_free(dl_tbf); |
| 1161 | dl_tbf = NULL; |
Jacob Erlbeck | cf6ae9d | 2015-08-31 14:32:05 +0200 | [diff] [blame] | 1162 | } |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1163 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF " |
| 1164 | "in packet resource request of single " |
| 1165 | "block, so we provide one:\n"); |
| 1166 | sba = bts()->sba()->find(this, fn); |
| 1167 | if (!sba) { |
| 1168 | LOGP(DRLCMAC, LOGL_NOTICE, "MS requests UL TBF " |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1169 | "in packet resource request of single " |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1170 | "block, but there is no resource request " |
| 1171 | "scheduled!\n"); |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1172 | } else { |
| 1173 | ta = sba->ta; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1174 | bts()->sba()->free_sba(sba); |
| 1175 | } |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1176 | if (request->Exist_MS_Radio_Access_capability) { |
| 1177 | ms_class = Decoding::get_ms_class_by_capability( |
| 1178 | &request->MS_Radio_Access_capability); |
| 1179 | egprs_ms_class = |
| 1180 | Decoding::get_egprs_ms_class_by_capability( |
| 1181 | &request->MS_Radio_Access_capability); |
| 1182 | } |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1183 | if (!ms_class) |
| 1184 | LOGP(DRLCMAC, LOGL_NOTICE, "MS does not give us a class.\n"); |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1185 | if (egprs_ms_class) |
| 1186 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 1187 | "MS supports EGPRS multislot class %d.\n", |
| 1188 | egprs_ms_class); |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 1189 | ul_tbf = tbf_alloc_ul(bts_data(), trx_no(), ms_class, |
| 1190 | egprs_ms_class, tlli, ta, ms); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1191 | if (!ul_tbf) |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1192 | return; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 1193 | |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1194 | /* set control ts to current MS's TS, until assignment complete */ |
| 1195 | 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] | 1196 | ul_tbf->control_ts = ts_no; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1197 | /* schedule uplink assignment */ |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1198 | ul_tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1199 | |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1200 | /* get capabilities */ |
| 1201 | if (ul_tbf->ms()) |
| 1202 | ul_tbf->ms()->set_egprs_ms_class(egprs_ms_class); |
| 1203 | |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1204 | /* get measurements */ |
| 1205 | if (ul_tbf->ms()) { |
| 1206 | get_meas(&meas, request); |
| 1207 | ul_tbf->ms()->update_l1_meas(&meas); |
| 1208 | } |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1209 | return; |
| 1210 | } |
| 1211 | |
| 1212 | if (request->ID.u.Global_TFI.UnionType) { |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1213 | struct gprs_rlcmac_dl_tbf *dl_tbf; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1214 | int8_t tfi = request->ID.u.Global_TFI.u.DOWNLINK_TFI; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1215 | dl_tbf = bts()->dl_tbf_by_tfi(tfi, trx_no(), ts_no); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1216 | if (!dl_tbf) { |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1217 | 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] | 1218 | return; |
| 1219 | } |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1220 | LOGP(DRLCMAC, LOGL_ERROR, |
| 1221 | "RX: [PCU <- BTS] %s FIXME: Packet resource request\n", |
| 1222 | tbf_name(dl_tbf)); |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1223 | } else { |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1224 | struct gprs_rlcmac_ul_tbf *ul_tbf; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1225 | int8_t tfi = request->ID.u.Global_TFI.u.UPLINK_TFI; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1226 | ul_tbf = bts()->ul_tbf_by_tfi(tfi, trx_no(), ts_no); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1227 | if (!ul_tbf) { |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1228 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESSOURCE REQ unknown uplink TFI=%d\n", tfi); |
| 1229 | return; |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1230 | } |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1231 | LOGP(DRLCMAC, LOGL_ERROR, |
| 1232 | "RX: [PCU <- BTS] %s FIXME: Packet resource request\n", |
| 1233 | tbf_name(ul_tbf)); |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1234 | } |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1235 | } |
| 1236 | |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1237 | 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] | 1238 | { |
| 1239 | struct gprs_rlcmac_sba *sba; |
| 1240 | |
| 1241 | sba = bts()->sba()->find(this, fn); |
| 1242 | if (!sba) { |
| 1243 | LOGP(DRLCMAC, LOGL_NOTICE, "MS send measurement " |
| 1244 | "in packet resource request of single " |
| 1245 | "block, but there is no resource request " |
Holger Hans Peter Freyther | 53a336f | 2013-10-27 12:47:48 +0100 | [diff] [blame] | 1246 | "scheduled! TLLI=0x%08x\n", report->TLLI); |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1247 | } else { |
Jacob Erlbeck | 1db67e0 | 2015-05-22 18:02:51 +0200 | [diff] [blame] | 1248 | GprsMs *ms = bts()->ms_store().get_ms(report->TLLI); |
| 1249 | if (!ms) |
| 1250 | LOGP(DRLCMAC, LOGL_NOTICE, "MS send measurement " |
| 1251 | "but TLLI 0x%08x is unknown\n", report->TLLI); |
| 1252 | else |
| 1253 | ms->set_ta(sba->ta); |
| 1254 | |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1255 | bts()->sba()->free_sba(sba); |
| 1256 | } |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1257 | gprs_rlcmac_meas_rep(report); |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1258 | } |
| 1259 | |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1260 | /* Received Uplink RLC control block. */ |
| 1261 | int gprs_rlcmac_pdch::rcv_control_block( |
| 1262 | bitvec *rlc_block, uint32_t fn) |
| 1263 | { |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1264 | RlcMacUplink_t * ul_control_block = (RlcMacUplink_t *)talloc_zero(tall_pcu_ctx, RlcMacUplink_t); |
| 1265 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ RX : Uplink Control Block +++++++++++++++++++++++++\n"); |
| 1266 | decode_gsm_rlcmac_uplink(rlc_block, ul_control_block); |
| 1267 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 1268 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- RX : Uplink Control Block -------------------------\n"); |
| 1269 | switch (ul_control_block->u.MESSAGE_TYPE) { |
| 1270 | case MT_PACKET_CONTROL_ACK: |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 1271 | 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] | 1272 | break; |
| 1273 | case MT_PACKET_DOWNLINK_ACK_NACK: |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 1274 | 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] | 1275 | break; |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1276 | case MT_EGPRS_PACKET_DOWNLINK_ACK_NACK: |
| 1277 | rcv_control_egprs_dl_ack_nack(&ul_control_block->u.Egprs_Packet_Downlink_Ack_Nack, fn); |
| 1278 | break; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1279 | case MT_PACKET_RESOURCE_REQUEST: |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 1280 | 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] | 1281 | break; |
| 1282 | case MT_PACKET_MEASUREMENT_REPORT: |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1283 | 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] | 1284 | break; |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 1285 | case MT_PACKET_UPLINK_DUMMY_CONTROL_BLOCK: |
| 1286 | /* ignoring it. change the SI to not force sending these? */ |
| 1287 | break; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1288 | default: |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 1289 | bts()->decode_error(); |
Holger Hans Peter Freyther | 180def9 | 2013-10-27 10:36:37 +0100 | [diff] [blame] | 1290 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 1291 | "RX: [PCU <- BTS] unknown control block(%d) received\n", |
| 1292 | ul_control_block->u.MESSAGE_TYPE); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1293 | } |
| 1294 | talloc_free(ul_control_block); |
| 1295 | return 1; |
| 1296 | } |
| 1297 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 1298 | |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1299 | /* received RLC/MAC block from L1 */ |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 1300 | int gprs_rlcmac_pdch::rcv_block(uint8_t *data, uint8_t len, uint32_t fn, |
| 1301 | struct pcu_l1_meas *meas) |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 1302 | { |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1303 | GprsCodingScheme cs = GprsCodingScheme::getBySizeUL(len); |
| 1304 | if (!cs) { |
| 1305 | bts()->decode_error(); |
| 1306 | LOGP(DRLCMACUL, LOGL_ERROR, "Dropping data block with invalid" |
| 1307 | "length: %d)\n", len); |
| 1308 | return -EINVAL; |
| 1309 | } |
| 1310 | |
Alexander Couzens | 7fdbf89 | 2016-05-21 19:45:23 +0200 | [diff] [blame] | 1311 | bts()->rlc_ul_bytes(len); |
| 1312 | |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1313 | LOGP(DRLCMACUL, LOGL_DEBUG, "Got RLC block, coding scheme: %s, " |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 1314 | "length: %d (%d))\n", cs.name(), len, cs.usedSizeUL()); |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1315 | |
| 1316 | if (cs.isGprs()) |
| 1317 | return rcv_block_gprs(data, fn, meas, cs); |
| 1318 | |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1319 | if (cs.isEgprs()) |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1320 | return rcv_data_block(data, fn, meas, cs); |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1321 | |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1322 | bts()->decode_error(); |
| 1323 | LOGP(DRLCMACUL, LOGL_ERROR, "Unsupported coding scheme %s\n", |
| 1324 | cs.name()); |
| 1325 | return -EINVAL; |
| 1326 | } |
| 1327 | |
Alexander Couzens | 2fcfc29 | 2016-05-24 14:40:03 +0200 | [diff] [blame] | 1328 | /*! \brief process egprs and gprs data blocks */ |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1329 | int gprs_rlcmac_pdch::rcv_data_block(uint8_t *data, uint32_t fn, |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1330 | struct pcu_l1_meas *meas, GprsCodingScheme cs) |
| 1331 | { |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1332 | int rc; |
Jacob Erlbeck | f2ba4cb | 2016-01-07 18:59:28 +0100 | [diff] [blame] | 1333 | struct gprs_rlc_data_info rlc_dec; |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1334 | struct gprs_rlcmac_ul_tbf *tbf; |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 1335 | unsigned len = cs.sizeUL(); |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1336 | |
| 1337 | /* These are always data blocks, since EGPRS still uses CS-1 for |
| 1338 | * control blocks (see 44.060, section 10.3, 1st par.) |
| 1339 | */ |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1340 | if (cs.isEgprs()) { |
| 1341 | if (!bts()->bts_data()->egprs_enabled) { |
| 1342 | LOGP(DRLCMACUL, LOGL_ERROR, |
| 1343 | "Got %s RLC block but EGPRS is not enabled\n", |
| 1344 | cs.name()); |
| 1345 | return -EINVAL; |
| 1346 | } |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1347 | } |
| 1348 | |
Jacob Erlbeck | d88bb2e | 2015-12-11 14:53:29 +0100 | [diff] [blame] | 1349 | LOGP(DRLCMACUL, LOGL_DEBUG, " UL data: %s\n", osmo_hexdump(data, len)); |
| 1350 | |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1351 | rc = Decoding::rlc_parse_ul_data_header(&rlc_dec, data, cs); |
| 1352 | if (rc < 0) { |
| 1353 | LOGP(DRLCMACUL, LOGL_ERROR, |
| 1354 | "Got %s RLC block but header parsing has failed\n", |
| 1355 | cs.name()); |
| 1356 | bts()->decode_error(); |
| 1357 | return rc; |
| 1358 | } |
| 1359 | |
| 1360 | LOGP(DRLCMACUL, LOGL_INFO, |
| 1361 | "Got %s RLC block: " |
| 1362 | "R=%d, SI=%d, TFI=%d, CPS=%d, RSB=%d, " |
| 1363 | "rc=%d\n", |
| 1364 | cs.name(), |
| 1365 | rlc_dec.r, rlc_dec.si, rlc_dec.tfi, rlc_dec.cps, rlc_dec.rsb, |
| 1366 | rc); |
| 1367 | |
| 1368 | /* find TBF inst from given TFI */ |
| 1369 | tbf = ul_tbf_by_tfi(rlc_dec.tfi); |
| 1370 | if (!tbf) { |
| 1371 | LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA unknown TFI=%d\n", |
| 1372 | rlc_dec.tfi); |
| 1373 | return 0; |
| 1374 | } |
| 1375 | |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 1376 | return tbf->rcv_data_block_acknowledged(&rlc_dec, data, meas); |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1377 | } |
| 1378 | |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1379 | int gprs_rlcmac_pdch::rcv_block_gprs(uint8_t *data, uint32_t fn, |
| 1380 | struct pcu_l1_meas *meas, GprsCodingScheme cs) |
| 1381 | { |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1382 | unsigned payload = data[0] >> 6; |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1383 | bitvec *block; |
| 1384 | int rc = 0; |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1385 | unsigned len = cs.maxBytesUL(); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1386 | |
| 1387 | switch (payload) { |
| 1388 | case GPRS_RLCMAC_DATA_BLOCK: |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1389 | rc = rcv_data_block(data, fn, meas, cs); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1390 | break; |
| 1391 | case GPRS_RLCMAC_CONTROL_BLOCK: |
| 1392 | block = bitvec_alloc(len); |
| 1393 | if (!block) |
| 1394 | return -ENOMEM; |
| 1395 | bitvec_unpack(block, data); |
Holger Hans Peter Freyther | 05f8efc | 2013-10-26 18:53:16 +0200 | [diff] [blame] | 1396 | rc = rcv_control_block(block, fn); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1397 | bitvec_free(block); |
| 1398 | break; |
| 1399 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
| 1400 | LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
| 1401 | break; |
| 1402 | default: |
| 1403 | LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload(%u).\n", payload); |
| 1404 | rc = -EINVAL; |
| 1405 | } |
| 1406 | |
| 1407 | return rc; |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 1408 | } |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1409 | |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 1410 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_from_list_by_tfi( |
| 1411 | LListHead<gprs_rlcmac_tbf> *tbf_list, uint8_t tfi, |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1412 | enum gprs_rlcmac_tbf_direction dir) |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1413 | { |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1414 | gprs_rlcmac_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 1415 | LListHead<gprs_rlcmac_tbf> *pos; |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1416 | |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 1417 | llist_for_each(pos, tbf_list) { |
| 1418 | tbf = pos->entry(); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1419 | if (tbf->tfi() != tfi) |
| 1420 | continue; |
| 1421 | if (!tbf->pdch[ts_no]) |
| 1422 | continue; |
| 1423 | return tbf; |
| 1424 | } |
| 1425 | return NULL; |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1426 | } |
| 1427 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1428 | 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] | 1429 | { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1430 | return as_ul_tbf(tbf_by_tfi(tfi, GPRS_RLCMAC_UL_TBF)); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1431 | } |
| 1432 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1433 | 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] | 1434 | { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1435 | return as_dl_tbf(tbf_by_tfi(tfi, GPRS_RLCMAC_DL_TBF)); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1436 | } |
| 1437 | |
| 1438 | /* lookup TBF Entity (by TFI) */ |
| 1439 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_by_tfi(uint8_t tfi, |
| 1440 | enum gprs_rlcmac_tbf_direction dir) |
| 1441 | { |
| 1442 | struct gprs_rlcmac_tbf *tbf; |
| 1443 | |
| 1444 | if (tfi >= 32) |
| 1445 | return NULL; |
| 1446 | |
| 1447 | tbf = m_tbfs[dir][tfi]; |
| 1448 | |
| 1449 | if (!tbf) |
| 1450 | return NULL; |
| 1451 | |
| 1452 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING)) { |
| 1453 | return tbf; |
| 1454 | } |
| 1455 | |
| 1456 | return NULL; |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1457 | } |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1458 | |
| 1459 | void gprs_rlcmac_pdch::attach_tbf(gprs_rlcmac_tbf *tbf) |
| 1460 | { |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1461 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 1462 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1463 | if (m_tbfs[tbf->direction][tbf->tfi()]) |
| 1464 | LOGP(DRLCMAC, LOGL_ERROR, "PDCH(TS %d, TRX %d): " |
| 1465 | "%s has not been detached, overwriting it\n", |
| 1466 | ts_no, trx_no(), |
| 1467 | m_tbfs[tbf->direction][tbf->tfi()]->name()); |
| 1468 | |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1469 | m_num_tbfs[tbf->direction] += 1; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1470 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1471 | ul_tbf = as_ul_tbf(tbf); |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1472 | m_assigned_usf |= 1 << ul_tbf->m_usf[ts_no]; |
| 1473 | } |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1474 | m_assigned_tfi[tbf->direction] |= 1UL << tbf->tfi(); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1475 | m_tbfs[tbf->direction][tbf->tfi()] = tbf; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1476 | |
| 1477 | LOGP(DRLCMAC, LOGL_INFO, "PDCH(TS %d, TRX %d): Attaching %s, %d TBFs, " |
| 1478 | "USFs = %02x, TFIs = %08x.\n", |
| 1479 | ts_no, trx_no(), tbf->name(), m_num_tbfs[tbf->direction], |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1480 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1481 | } |
| 1482 | |
| 1483 | void gprs_rlcmac_pdch::detach_tbf(gprs_rlcmac_tbf *tbf) |
| 1484 | { |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1485 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 1486 | |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1487 | OSMO_ASSERT(m_num_tbfs[tbf->direction] > 0); |
| 1488 | |
| 1489 | m_num_tbfs[tbf->direction] -= 1; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1490 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1491 | ul_tbf = as_ul_tbf(tbf); |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1492 | m_assigned_usf &= ~(1 << ul_tbf->m_usf[ts_no]); |
| 1493 | } |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1494 | m_assigned_tfi[tbf->direction] &= ~(1UL << tbf->tfi()); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1495 | m_tbfs[tbf->direction][tbf->tfi()] = NULL; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1496 | |
| 1497 | LOGP(DRLCMAC, LOGL_INFO, "PDCH(TS %d, TRX %d): Detaching %s, %d TBFs, " |
| 1498 | "USFs = %02x, TFIs = %08x.\n", |
| 1499 | ts_no, trx_no(), tbf->name(), m_num_tbfs[tbf->direction], |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1500 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1501 | } |
Jacob Erlbeck | 23f93a1 | 2015-06-30 08:52:54 +0200 | [diff] [blame] | 1502 | |
| 1503 | void gprs_rlcmac_pdch::reserve(enum gprs_rlcmac_tbf_direction dir) |
| 1504 | { |
| 1505 | m_num_reserved[dir] += 1; |
| 1506 | } |
| 1507 | |
| 1508 | void gprs_rlcmac_pdch::unreserve(enum gprs_rlcmac_tbf_direction dir) |
| 1509 | { |
| 1510 | OSMO_ASSERT(m_num_reserved[dir] > 0); |
| 1511 | m_num_reserved[dir] -= 1; |
| 1512 | } |
| 1513 | |
| 1514 | void gprs_rlcmac_trx::reserve_slots(enum gprs_rlcmac_tbf_direction dir, |
| 1515 | uint8_t slots) |
| 1516 | { |
| 1517 | unsigned i; |
| 1518 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 1519 | if (slots & (1 << i)) |
| 1520 | pdch[i].reserve(dir); |
| 1521 | } |
| 1522 | |
| 1523 | void gprs_rlcmac_trx::unreserve_slots(enum gprs_rlcmac_tbf_direction dir, |
| 1524 | uint8_t slots) |
| 1525 | { |
| 1526 | unsigned i; |
| 1527 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 1528 | if (slots & (1 << i)) |
| 1529 | pdch[i].unreserve(dir); |
| 1530 | } |