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> |
Max | 9bbe160 | 2016-07-18 12:50:18 +0200 | [diff] [blame] | 36 | #include <osmocom/gsm/protocol/gsm_04_08.h> |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 37 | } |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 38 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 39 | #include <arpa/inet.h> |
| 40 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 41 | #include <errno.h> |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 42 | #include <string.h> |
| 43 | |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 44 | extern void *tall_pcu_ctx; |
| 45 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 46 | static BTS s_bts; |
| 47 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 48 | /** |
| 49 | * For gcc-4.4 compat do not use extended initializer list but keep the |
| 50 | * order from the enum here. Once we support GCC4.7 and up we can change |
| 51 | * the code below. |
| 52 | */ |
| 53 | static const struct rate_ctr_desc bts_ctr_description[] = { |
| 54 | { "tbf.dl.alloc", "TBF DL Allocated "}, |
| 55 | { "tbf.dl.freed", "TBF DL Freed "}, |
Jacob Erlbeck | 0316dc6 | 2016-01-21 20:12:04 +0100 | [diff] [blame] | 56 | { "tbf.dl.aborted", "TBF DL Aborted "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 57 | { "tbf.ul.alloc", "TBF UL Allocated "}, |
| 58 | { "tbf.ul.freed", "TBF UL Freed "}, |
Jacob Erlbeck | 0316dc6 | 2016-01-21 20:12:04 +0100 | [diff] [blame] | 59 | { "tbf.ul.aborted", "TBF UL Aborted "}, |
Holger Hans Peter Freyther | aa35ba7 | 2013-11-13 15:02:50 +0100 | [diff] [blame] | 60 | { "tbf.reused", "TBF Reused "}, |
Jacob Erlbeck | 5979fe9 | 2015-07-14 14:02:41 +0200 | [diff] [blame] | 61 | { "tbf.alloc.algo-a", "TBF Alloc Algo A "}, |
| 62 | { "tbf.alloc.algo-b", "TBF Alloc Algo B "}, |
Jacob Erlbeck | 9b3d7e0 | 2016-01-19 10:44:42 +0100 | [diff] [blame] | 63 | { "tbf.failed.egprs-only", "TBF Failed EGPRS-only"}, |
Holger Hans Peter Freyther | e9429b5 | 2013-11-13 19:36:57 +0100 | [diff] [blame] | 64 | { "rlc.sent", "RLC Sent "}, |
| 65 | { "rlc.resent", "RLC Resent "}, |
Holger Hans Peter Freyther | ef93bdb | 2013-11-24 00:01:50 +0100 | [diff] [blame] | 66 | { "rlc.restarted", "RLC Restarted "}, |
Holger Hans Peter Freyther | c70aae4 | 2013-11-19 17:09:37 +0100 | [diff] [blame] | 67 | { "rlc.stalled", "RLC Stalled "}, |
Holger Hans Peter Freyther | 092478f | 2013-11-23 01:01:19 +0100 | [diff] [blame] | 68 | { "rlc.nacked", "RLC Nacked "}, |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 69 | { "rlc.final_block_resent", "RLC Final Blk resent "}, |
Jacob Erlbeck | c91c18e | 2015-07-07 09:33:29 +0200 | [diff] [blame] | 70 | { "rlc.ass.timedout", "RLC Assign Timeout "}, |
Jacob Erlbeck | 7c8d39a | 2015-09-07 14:04:56 +0200 | [diff] [blame] | 71 | { "rlc.ass.failed", "RLC Assign Failed "}, |
Jacob Erlbeck | c91c18e | 2015-07-07 09:33:29 +0200 | [diff] [blame] | 72 | { "rlc.ack.timedout", "RLC Ack Timeout "}, |
Jacob Erlbeck | 7c8d39a | 2015-09-07 14:04:56 +0200 | [diff] [blame] | 73 | { "rlc.ack.failed", "RLC Ack Failed "}, |
Jacob Erlbeck | c91c18e | 2015-07-07 09:33:29 +0200 | [diff] [blame] | 74 | { "rlc.rel.timedout", "RLC Release Timeout "}, |
Jacob Erlbeck | be4a08b | 2015-08-25 15:19:31 +0200 | [diff] [blame] | 75 | { "rlc.late-block", "RLC Late Block "}, |
Alexander Couzens | c8fd4b7 | 2016-05-24 11:09:20 +0200 | [diff] [blame] | 76 | { "rlc.sent-dummy", "RLC Sent Dummy "}, |
| 77 | { "rlc.sent-control", "RLC Sent Control "}, |
Alexander Couzens | 7fdbf89 | 2016-05-21 19:45:23 +0200 | [diff] [blame] | 78 | { "rlc.dl_bytes", "RLC DL Bytes "}, |
| 79 | { "rlc.dl_payload_bytes", "RLC DL Payload Bytes "}, |
| 80 | { "rlc.ul_bytes", "RLC UL Bytes "}, |
| 81 | { "rlc.ul_payload_bytes", "RLC UL Payload Bytes "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 82 | { "decode.errors", "Decode Errors "}, |
Holger Hans Peter Freyther | 93e048f | 2013-10-27 10:00:47 +0100 | [diff] [blame] | 83 | { "sba.allocated", "SBA Allocated "}, |
| 84 | { "sba.freed", "SBA Freed "}, |
| 85 | { "sba.timedout", "SBA Timeout "}, |
Holger Hans Peter Freyther | 1997787 | 2013-10-27 10:34:31 +0100 | [diff] [blame] | 86 | { "llc.timeout", "Timedout Frames "}, |
| 87 | { "llc.dropped", "Dropped Frames "}, |
Holger Hans Peter Freyther | b3d5ee2 | 2013-11-13 16:43:26 +0100 | [diff] [blame] | 88 | { "llc.scheduled", "Scheduled Frames "}, |
Alexander Couzens | 7fdbf89 | 2016-05-21 19:45:23 +0200 | [diff] [blame] | 89 | { "llc.dl_bytes", "RLC encapsulated PDUs"}, |
| 90 | { "llc.ul_bytes", "full PDUs received "}, |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 91 | { "rach.requests", "RACH requests "}, |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 92 | { "11bit_rach.requests", "11BIT_RACH requests "}, |
| 93 | { "immediate.assignment_UL", "Immediate Assign UL "}, |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 94 | { "immediate.assignment_rej", "Immediate Assign Rej "}, |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 95 | { "immediate.assignment_DL", "Immediate Assign DL "}, |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 96 | { "channel.request_description","Channel Request Desc "}, |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 97 | { "pkt.ul_assignment", "Packet UL Assignment "}, |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 98 | { "pkt.access_reject", "Packet Access Reject "}, |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 99 | { "pkt.dl_assignment", "Packet DL Assignment "}, |
| 100 | { "ul.control", "UL control Block "}, |
| 101 | { "ul.assignment_poll_timeout", "UL Assign Timeout "}, |
| 102 | { "ul.assignment_failed", "UL Assign Failed "}, |
| 103 | { "dl.assignment_timeout", "DL Assign Timeout "}, |
| 104 | { "dl.assignment_failed", "DL Assign Failed "}, |
| 105 | { "pkt.ul_ack_nack_timeout", "PUAN Poll Timeout "}, |
| 106 | { "pkt.ul_ack_nack_failed", "PUAN poll Failed "}, |
| 107 | { "pkt.dl_ack_nack_timeout", "PDAN poll Timeout "}, |
| 108 | { "pkt.dl_ack_nack_failed", "PDAN poll Failed "}, |
| 109 | { "gprs.downlink_cs1", "CS1 downlink "}, |
| 110 | { "gprs.downlink_cs2", "CS2 downlink "}, |
| 111 | { "gprs.downlink_cs3", "CS3 downlink "}, |
| 112 | { "gprs.downlink_cs4", "CS4 downlink "}, |
| 113 | { "egprs.downlink_mcs1", "MCS1 downlink "}, |
| 114 | { "egprs.downlink_mcs2", "MCS2 downlink "}, |
| 115 | { "egprs.downlink_mcs3", "MCS3 downlink "}, |
| 116 | { "egprs.downlink_mcs4", "MCS4 downlink "}, |
| 117 | { "egprs.downlink_mcs5", "MCS5 downlink "}, |
| 118 | { "egprs.downlink_mcs6", "MCS6 downlink "}, |
| 119 | { "egprs.downlink_mcs7", "MCS7 downlink "}, |
| 120 | { "egprs.downlink_mcs8", "MCS8 downlink "}, |
| 121 | { "egprs.downlink_mcs9", "MCS9 downlink "}, |
| 122 | { "gprs.uplink_cs1", "CS1 Uplink "}, |
| 123 | { "gprs.uplink_cs2", "CS2 Uplink "}, |
| 124 | { "gprs.uplink_cs3", "CS3 Uplink "}, |
| 125 | { "gprs.uplink_cs4", "CS4 Uplink "}, |
| 126 | { "egprs.uplink_mcs1", "MCS1 Uplink "}, |
| 127 | { "egprs.uplink_mcs2", "MCS2 Uplink "}, |
| 128 | { "egprs.uplink_mcs3", "MCS3 Uplink "}, |
| 129 | { "egprs.uplink_mcs4", "MCS4 Uplink "}, |
| 130 | { "egprs.uplink_mcs5", "MCS5 Uplink "}, |
| 131 | { "egprs.uplink_mcs6", "MCS6 Uplink "}, |
| 132 | { "egprs.uplink_mcs7", "MCS7 Uplink "}, |
| 133 | { "egprs.uplink_mcs8", "MCS8 Uplink "}, |
| 134 | { "egprs.uplink_mcs9", "MCS9 Uplink "}, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 135 | }; |
| 136 | |
| 137 | static const struct rate_ctr_group_desc bts_ctrg_desc = { |
| 138 | "bts", |
| 139 | "BTS Statistics", |
Holger Hans Peter Freyther | b8a5426 | 2015-11-07 21:00:00 +0100 | [diff] [blame] | 140 | OSMO_STATS_CLASS_GLOBAL, |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 141 | ARRAY_SIZE(bts_ctr_description), |
| 142 | bts_ctr_description, |
| 143 | }; |
| 144 | |
Jacob Erlbeck | f5898a0 | 2015-11-27 19:05:13 +0100 | [diff] [blame] | 145 | static const struct osmo_stat_item_desc bts_stat_item_description[] = { |
| 146 | { "ms.present", "MS Present ", |
| 147 | OSMO_STAT_ITEM_NO_UNIT, 4, 0}, |
| 148 | }; |
| 149 | |
| 150 | static const struct osmo_stat_item_group_desc bts_statg_desc = { |
| 151 | "bts", |
| 152 | "BTS Statistics", |
| 153 | OSMO_STATS_CLASS_GLOBAL, |
| 154 | ARRAY_SIZE(bts_stat_item_description), |
| 155 | bts_stat_item_description, |
| 156 | }; |
| 157 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 158 | BTS* BTS::main_bts() |
| 159 | { |
| 160 | return &s_bts; |
| 161 | } |
| 162 | |
| 163 | struct gprs_rlcmac_bts *BTS::bts_data() |
| 164 | { |
| 165 | return &m_bts; |
| 166 | } |
| 167 | |
| 168 | struct gprs_rlcmac_bts *bts_main_data() |
| 169 | { |
| 170 | return BTS::main_bts()->bts_data(); |
| 171 | } |
| 172 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 173 | struct rate_ctr_group *bts_main_data_stats() |
| 174 | { |
| 175 | return BTS::main_bts()->rate_counters(); |
| 176 | } |
| 177 | |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 178 | BTS::BTS() |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 179 | : m_cur_fn(0) |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 180 | , m_cur_blk_fn(-1) |
Holger Hans Peter Freyther | b78adcd | 2013-10-17 20:12:37 +0200 | [diff] [blame] | 181 | , m_pollController(*this) |
Holger Hans Peter Freyther | cedf890 | 2013-10-19 20:47:12 +0200 | [diff] [blame] | 182 | , m_sba(*this) |
Jacob Erlbeck | 17214bb | 2015-06-02 14:06:12 +0200 | [diff] [blame] | 183 | , m_ms_store(this) |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 184 | { |
| 185 | memset(&m_bts, 0, sizeof(m_bts)); |
| 186 | m_bts.bts = this; |
Holger Hans Peter Freyther | 4ed1dae | 2013-10-20 10:14:03 +0200 | [diff] [blame] | 187 | |
| 188 | /* initialize back pointers */ |
| 189 | for (size_t trx_no = 0; trx_no < ARRAY_SIZE(m_bts.trx); ++trx_no) { |
| 190 | struct gprs_rlcmac_trx *trx = &m_bts.trx[trx_no]; |
| 191 | trx->trx_no = trx_no; |
| 192 | trx->bts = this; |
| 193 | |
| 194 | for (size_t ts_no = 0; ts_no < ARRAY_SIZE(trx->pdch); ++ts_no) { |
| 195 | struct gprs_rlcmac_pdch *pdch = &trx->pdch[ts_no]; |
| 196 | pdch->ts_no = ts_no; |
| 197 | pdch->trx = trx; |
| 198 | } |
| 199 | } |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 200 | |
| 201 | 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] | 202 | 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] | 203 | } |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 204 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 205 | BTS::~BTS() |
| 206 | { |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 207 | /* this can cause counter updates and must not be left to the |
| 208 | * m_ms_store's destructor */ |
| 209 | m_ms_store.cleanup(); |
| 210 | |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 211 | rate_ctr_group_free(m_ratectrs); |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 212 | osmo_stat_item_group_free(m_statg); |
Holger Hans Peter Freyther | f537298 | 2013-10-27 09:02:31 +0100 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 216 | void BTS::set_current_frame_number(int fn) |
| 217 | { |
Jacob Erlbeck | ac49d09 | 2015-08-27 13:18:24 +0200 | [diff] [blame] | 218 | /* The UL frame numbers lag 3 behind the DL frames and the data |
| 219 | * indication is only sent after all 4 frames of the block have been |
| 220 | * received. Sometimes there is an idle frame between the end of one |
| 221 | * and start of another frame (every 3 blocks). So the timeout should |
| 222 | * 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] | 223 | * stay on the safe side and say 13 or more. An additional delay can |
| 224 | * happen due to the block processing time in the DSP, so the delay of |
| 225 | * decoded blocks relative to the timing clock can be much larger. |
| 226 | * Values up to 50 frames have been observed under load. */ |
| 227 | const static int max_delay = 60; |
Jacob Erlbeck | ac49d09 | 2015-08-27 13:18:24 +0200 | [diff] [blame] | 228 | |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 229 | m_cur_fn = fn; |
Jacob Erlbeck | ac49d09 | 2015-08-27 13:18:24 +0200 | [diff] [blame] | 230 | m_pollController.expireTimedout(m_cur_fn, max_delay); |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 231 | } |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 232 | |
Jacob Erlbeck | af75ce8 | 2015-08-26 13:22:28 +0200 | [diff] [blame] | 233 | void BTS::set_current_block_frame_number(int fn, unsigned max_delay) |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 234 | { |
| 235 | int delay = 0; |
| 236 | const int late_block_delay_thresh = 13; |
| 237 | const int fn_update_ok_min_delay = -500; |
| 238 | const int fn_update_ok_max_delay = 0; |
| 239 | |
| 240 | /* frame numbers in the received blocks are assumed to be strongly |
| 241 | * monotonic. */ |
| 242 | if (m_cur_blk_fn >= 0) { |
| 243 | int delta = (fn + 2715648 * 3 / 2 - m_cur_blk_fn) % 2715648 - 2715648/2; |
| 244 | if (delta <= 0) |
| 245 | return; |
| 246 | } |
| 247 | |
| 248 | /* Check block delay vs. the current frame number */ |
| 249 | if (current_frame_number() != 0) |
| 250 | delay = (fn + 2715648 * 3 / 2 - current_frame_number()) % 2715648 |
| 251 | - 2715648/2; |
Jacob Erlbeck | be4a08b | 2015-08-25 15:19:31 +0200 | [diff] [blame] | 252 | if (delay <= -late_block_delay_thresh) { |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 253 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 254 | "Late RLC block, FN delta: %d FN: %d curFN: %d\n", |
| 255 | delay, fn, current_frame_number()); |
Jacob Erlbeck | be4a08b | 2015-08-25 15:19:31 +0200 | [diff] [blame] | 256 | rlc_late_block(); |
| 257 | } |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 258 | |
| 259 | m_cur_blk_fn = fn; |
| 260 | if (delay < fn_update_ok_min_delay || delay > fn_update_ok_max_delay || |
| 261 | current_frame_number() == 0) |
| 262 | m_cur_fn = fn; |
| 263 | |
Jacob Erlbeck | af75ce8 | 2015-08-26 13:22:28 +0200 | [diff] [blame] | 264 | m_pollController.expireTimedout(fn, max_delay); |
Jacob Erlbeck | 60f7703 | 2015-08-24 14:35:14 +0200 | [diff] [blame] | 265 | } |
| 266 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 267 | int BTS::add_paging(uint8_t chan_needed, uint8_t *identity_lv) |
| 268 | { |
| 269 | uint8_t l, trx, ts, any_tbf = 0; |
| 270 | struct gprs_rlcmac_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 271 | LListHead<gprs_rlcmac_tbf> *pos; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 272 | struct gprs_rlcmac_paging *pag; |
| 273 | uint8_t slot_mask[8]; |
| 274 | int8_t first_ts; /* must be signed */ |
| 275 | |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 276 | LListHead<gprs_rlcmac_tbf> *tbfs_lists[] = { |
| 277 | &m_ul_tbfs, |
| 278 | &m_dl_tbfs, |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 279 | NULL |
| 280 | }; |
| 281 | |
| 282 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 283 | LOGP(DRLCMAC, LOGL_INFO, "Add RR paging: chan-needed=%d MI=%s\n", |
| 284 | chan_needed, osmo_hexdump(identity_lv + 1, identity_lv[0])); |
| 285 | |
| 286 | /* collect slots to page |
| 287 | * Mark slots for every TBF, but only mark one of it. |
| 288 | * Mark only the first slot found. |
| 289 | * Don't mark, if TBF uses a different slot that is already marked. */ |
| 290 | memset(slot_mask, 0, sizeof(slot_mask)); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 291 | for (l = 0; tbfs_lists[l]; l++) { |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 292 | llist_for_each(pos, tbfs_lists[l]) { |
| 293 | tbf = pos->entry(); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 294 | first_ts = -1; |
| 295 | for (ts = 0; ts < 8; ts++) { |
| 296 | if (tbf->pdch[ts]) { |
| 297 | /* remember the first slot found */ |
| 298 | if (first_ts < 0) |
| 299 | first_ts = ts; |
| 300 | /* break, if we already marked a slot */ |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 301 | if ((slot_mask[tbf->trx->trx_no] & (1 << ts))) |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 302 | break; |
| 303 | } |
| 304 | } |
| 305 | /* mark first slot found, if none is marked already */ |
| 306 | if (ts == 8 && first_ts >= 0) { |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 307 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s uses " |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 308 | "TRX=%d TS=%d, so we mark\n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 309 | tbf_name(tbf), |
| 310 | tbf->trx->trx_no, first_ts); |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 311 | slot_mask[tbf->trx->trx_no] |= (1 << first_ts); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 312 | } else |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 313 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s uses " |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 314 | "already marked TRX=%d TS=%d\n", |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 315 | tbf_name(tbf), |
| 316 | tbf->trx->trx_no, ts); |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 317 | } |
| 318 | } |
| 319 | |
| 320 | /* Now we have a list of marked slots. Every TBF uses at least one |
| 321 | * of these slots. */ |
| 322 | |
| 323 | /* schedule paging to all marked slots */ |
| 324 | for (trx = 0; trx < 8; trx++) { |
| 325 | if (slot_mask[trx] == 0) |
| 326 | continue; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 327 | for (ts = 0; ts < 8; ts++) { |
| 328 | if ((slot_mask[trx] & (1 << ts))) { |
| 329 | /* schedule */ |
| 330 | pag = talloc_zero(tall_pcu_ctx, |
| 331 | struct gprs_rlcmac_paging); |
| 332 | if (!pag) |
| 333 | return -ENOMEM; |
| 334 | pag->chan_needed = chan_needed; |
| 335 | memcpy(pag->identity_lv, identity_lv, |
| 336 | identity_lv[0] + 1); |
| 337 | m_bts.trx[trx].pdch[ts].add_paging(pag); |
| 338 | LOGP(DRLCMAC, LOGL_INFO, "Paging on PACCH of " |
| 339 | "TRX=%d TS=%d\n", trx, ts); |
Holger Hans Peter Freyther | 9446485 | 2013-10-19 18:33:52 +0200 | [diff] [blame] | 340 | any_tbf = 1; |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 341 | } |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | if (!any_tbf) |
| 346 | LOGP(DRLCMAC, LOGL_INFO, "No paging, because no TBF\n"); |
| 347 | |
| 348 | return 0; |
| 349 | } |
| 350 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 351 | 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] | 352 | { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 353 | struct gprs_rlcmac_dl_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 354 | LListHead<gprs_rlcmac_tbf> *pos; |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 355 | |
| 356 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 357 | * schedule one downlink control block (with polling) at a FN per TS */ |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 358 | llist_for_each(pos, &m_dl_tbfs) { |
| 359 | tbf = as_dl_tbf(pos->entry()); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 360 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 361 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 362 | && tbf->poll_fn == fn && tbf->trx->trx_no == trx |
Jacob Erlbeck | 8eb1714 | 2016-01-22 17:58:17 +0100 | [diff] [blame] | 363 | && tbf->poll_ts == ts) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 364 | return tbf; |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 365 | } |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 366 | } |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 367 | return NULL; |
| 368 | } |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 369 | 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] | 370 | { |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 371 | struct gprs_rlcmac_ul_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 372 | LListHead<gprs_rlcmac_tbf> *pos; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 373 | |
| 374 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 375 | * schedule one downlink control block (with polling) at a FN per TS */ |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 376 | llist_for_each(pos, &m_ul_tbfs) { |
| 377 | tbf = as_ul_tbf(pos->entry()); |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 378 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| 379 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Holger Hans Peter Freyther | ec80f82 | 2013-10-27 13:44:37 +0100 | [diff] [blame] | 380 | && tbf->poll_fn == fn && tbf->trx->trx_no == trx |
Jacob Erlbeck | 8eb1714 | 2016-01-22 17:58:17 +0100 | [diff] [blame] | 381 | && tbf->poll_ts == ts) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 382 | return tbf; |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 383 | } |
Holger Hans Peter Freyther | 34bd8bd | 2013-10-19 21:10:38 +0200 | [diff] [blame] | 384 | } |
| 385 | return NULL; |
| 386 | } |
| 387 | |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 388 | /* lookup downlink TBF Entity (by TFI) */ |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 389 | 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] | 390 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 391 | if (trx >= 8 || ts >= 8) |
| 392 | return NULL; |
| 393 | |
| 394 | return m_bts.trx[trx].pdch[ts].dl_tbf_by_tfi(tfi); |
Daniel Willmann | 54044b0 | 2014-07-02 17:58:15 +0200 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | /* lookup uplink TBF Entity (by TFI) */ |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 398 | 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] | 399 | { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 400 | if (trx >= 8 || ts >= 8) |
Holger Hans Peter Freyther | f63cabd | 2013-10-26 19:10:43 +0200 | [diff] [blame] | 401 | return NULL; |
| 402 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 403 | 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] | 404 | } |
| 405 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 406 | /* |
| 407 | * Search for free TFI and return TFI, TRX. |
| 408 | * This method returns the first TFI that is currently not used in any PDCH of |
| 409 | * a TRX. The first TRX that contains such an TFI is returned. Negative values |
| 410 | * indicate errors. |
| 411 | */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 412 | int BTS::tfi_find_free(enum gprs_rlcmac_tbf_direction dir, |
| 413 | uint8_t *_trx, int8_t use_trx) |
| 414 | { |
| 415 | struct gprs_rlcmac_pdch *pdch; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 416 | uint32_t free_tfis; |
| 417 | bool has_pdch = false; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 418 | uint8_t trx_from, trx_to, trx, ts, tfi; |
| 419 | |
| 420 | if (use_trx >= 0 && use_trx < 8) |
| 421 | trx_from = trx_to = use_trx; |
| 422 | else { |
| 423 | trx_from = 0; |
| 424 | trx_to = 7; |
| 425 | } |
| 426 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 427 | /* find a TFI that is unused on all PDCH */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 428 | for (trx = trx_from; trx <= trx_to; trx++) { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 429 | bool trx_has_pdch = false; |
| 430 | |
| 431 | free_tfis = 0xffffffff; |
| 432 | |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 433 | for (ts = 0; ts < 8; ts++) { |
| 434 | pdch = &m_bts.trx[trx].pdch[ts]; |
| 435 | if (!pdch->is_enabled()) |
| 436 | continue; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 437 | free_tfis &= ~pdch->assigned_tfi(dir); |
| 438 | trx_has_pdch = true; |
| 439 | has_pdch = true; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 440 | } |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 441 | if (trx_has_pdch && free_tfis) |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 442 | break; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 443 | |
| 444 | free_tfis = 0; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 445 | } |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 446 | if (!has_pdch) { |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 447 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
| 448 | return -EINVAL; |
| 449 | } |
| 450 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 451 | if (!free_tfis) { |
| 452 | LOGP(DRLCMAC, LOGL_NOTICE, "No TFI available.\n"); |
| 453 | return -EBUSY; |
| 454 | } |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 455 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 456 | |
| 457 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 458 | "Searching for first unallocated TFI: TRX=%d\n", trx); |
| 459 | |
| 460 | /* find the first */ |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 461 | for (tfi = 0; tfi < 32; tfi++) { |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 462 | if (free_tfis & 1 << tfi) |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 463 | break; |
| 464 | } |
| 465 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 466 | OSMO_ASSERT(tfi < 32); |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 467 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 468 | LOGP(DRLCMAC, LOGL_DEBUG, " Found TFI=%d.\n", tfi); |
| 469 | *_trx = trx; |
| 470 | return tfi; |
Holger Hans Peter Freyther | 70ddde6 | 2013-10-26 19:17:58 +0200 | [diff] [blame] | 471 | } |
| 472 | |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 473 | int BTS::rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn) |
| 474 | { |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 475 | struct gprs_rlcmac_dl_tbf *dl_tbf = NULL; |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 476 | uint8_t plen; |
| 477 | uint32_t tlli; |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 478 | GprsMs *ms; |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 479 | |
| 480 | /* move to IA Rest Octets */ |
| 481 | plen = data[0] >> 2; |
| 482 | data += 1 + plen; |
| 483 | |
| 484 | if ((*data & 0xf0) != 0xd0) { |
| 485 | LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but rest " |
| 486 | "octets do not start with bit sequence 'HH01' " |
| 487 | "(Packet Downlink Assignment)\n"); |
| 488 | return -EINVAL; |
| 489 | } |
| 490 | |
| 491 | /* get TLLI from downlink assignment */ |
| 492 | tlli = (*data++) << 28; |
| 493 | tlli |= (*data++) << 20; |
| 494 | tlli |= (*data++) << 12; |
| 495 | tlli |= (*data++) << 4; |
| 496 | tlli |= (*data++) >> 4; |
| 497 | |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 498 | ms = ms_by_tlli(tlli); |
| 499 | if (ms) |
| 500 | dl_tbf = ms->dl_tbf(); |
Daniel Willmann | 1dac2eb | 2014-08-07 12:37:34 +0200 | [diff] [blame] | 501 | if (!dl_tbf) { |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 502 | LOGP(DRLCMAC, LOGL_ERROR, "Got IMM.ASS confirm, but TLLI=%08x " |
| 503 | "does not exit\n", tlli); |
| 504 | return -EINVAL; |
| 505 | } |
| 506 | |
| 507 | LOGP(DRLCMAC, LOGL_DEBUG, "Got IMM.ASS confirm for TLLI=%08x\n", tlli); |
| 508 | |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 509 | if (dl_tbf->m_wait_confirm) |
Daniel Willmann | 1dac2eb | 2014-08-07 12:37:34 +0200 | [diff] [blame] | 510 | tbf_timer_start(dl_tbf, 0, Tassign_agch); |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 511 | |
| 512 | return 0; |
| 513 | } |
| 514 | |
bhargava | 959d1de | 2016-08-17 15:17:21 +0530 | [diff] [blame] | 515 | int BTS::rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t is_11bit, |
| 516 | enum ph_burst_type burst_type) |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 517 | { |
Jacob Erlbeck | 1f33294 | 2015-05-04 08:21:17 +0200 | [diff] [blame] | 518 | struct gprs_rlcmac_ul_tbf *tbf = NULL; |
Holger Hans Peter Freyther | f37e514 | 2013-12-25 18:56:34 +0100 | [diff] [blame] | 519 | uint8_t trx_no, ts_no = 0; |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 520 | uint8_t sb = 0; |
| 521 | uint32_t sb_fn = 0; |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 522 | int rc = 0; |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 523 | int plen; |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 524 | uint8_t usf = 7; |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 525 | uint8_t tsc = 0, ta = qta2ta(qta); |
bhargava | 628dcfb | 2016-09-14 20:30:31 +0530 | [diff] [blame] | 526 | uint16_t ms_class = 0; |
| 527 | uint16_t priority = 0; |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 528 | bool failure = false; |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 529 | |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 530 | rach_frame(); |
| 531 | |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 532 | if (is_11bit) |
| 533 | rach_frame_11bit(); |
| 534 | |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 535 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF on RACH, " |
| 536 | "so we provide one \n" |
| 537 | "ra=0x%02x Fn=%u qta=%d is_11bit=%d:\n", ra, Fn, qta, is_11bit); |
bhargava | 628dcfb | 2016-09-14 20:30:31 +0530 | [diff] [blame] | 538 | |
| 539 | sb = is_single_block(ra, burst_type, is_11bit, &ms_class, &priority); |
| 540 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 541 | if (sb) { |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 542 | rc = sba()->alloc(&trx_no, &ts_no, &sb_fn, ta); |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 543 | if (rc < 0) { |
| 544 | failure = true; |
| 545 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource for " |
| 546 | "single block allocation." |
| 547 | "sending Immediate " |
| 548 | "Assignment Uplink (AGCH) reject\n"); |
| 549 | } else { |
| 550 | tsc = m_bts.trx[trx_no].pdch[ts_no].tsc; |
| 551 | |
| 552 | LOGP(DRLCMAC, LOGL_DEBUG, "RX: [PCU <- BTS] RACH " |
| 553 | " qbit-ta=%d ra=0x%02x, Fn=%d (%d,%d,%d)," |
| 554 | " SBFn=%d\n", |
| 555 | qta, ra, |
| 556 | Fn, (Fn / (26 * 51)) % 32, Fn % 51, Fn % 26, |
| 557 | sb_fn); |
| 558 | LOGP(DRLCMAC, LOGL_INFO, "TX: Immediate Assignment " |
| 559 | "Uplink (AGCH)\n"); |
| 560 | } |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 561 | } else { |
| 562 | // Create new TBF |
Neels Hofmeyr | d32aa03 | 2016-06-20 18:17:03 +0200 | [diff] [blame] | 563 | #warning "Copy and paste with other routines.." |
bhargava | 628dcfb | 2016-09-14 20:30:31 +0530 | [diff] [blame] | 564 | |
| 565 | if (is_11bit) { |
| 566 | tbf = tbf_alloc_ul_tbf(&m_bts, NULL, -1, 0, |
| 567 | ms_class, 1); |
| 568 | } else { |
| 569 | /* set class to 0, since we don't know the multislot |
| 570 | * class yet */ |
| 571 | tbf = tbf_alloc_ul_tbf(&m_bts, NULL, -1, 0, 0, 1); |
| 572 | } |
| 573 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 574 | if (!tbf) { |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 575 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource sending " |
| 576 | "Immediate Assignment Uplink (AGCH) " |
| 577 | "reject\n"); |
| 578 | rc = -EBUSY; |
| 579 | failure = true; |
| 580 | } else { |
| 581 | tbf->set_ta(ta); |
| 582 | tbf->set_state(GPRS_RLCMAC_FLOW); |
| 583 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_CCCH); |
| 584 | tbf_timer_start(tbf, 3169, m_bts.t3169, 0); |
| 585 | LOGP(DRLCMAC, LOGL_DEBUG, "%s [UPLINK] START\n", |
| 586 | tbf_name(tbf)); |
| 587 | LOGP(DRLCMAC, LOGL_DEBUG, "%s RX: [PCU <- BTS] RACH " |
| 588 | "qbit-ta=%d ra=0x%02x, Fn=%d " |
| 589 | " (%d,%d,%d)\n", |
| 590 | tbf_name(tbf), |
| 591 | qta, ra, Fn, (Fn / (26 * 51)) % 32, |
| 592 | Fn % 51, Fn % 26); |
| 593 | LOGP(DRLCMAC, LOGL_INFO, "%s TX: START Immediate " |
| 594 | "Assignment Uplink (AGCH)\n", |
| 595 | tbf_name(tbf)); |
| 596 | trx_no = tbf->trx->trx_no; |
| 597 | ts_no = tbf->first_ts; |
| 598 | usf = tbf->m_usf[ts_no]; |
| 599 | tsc = tbf->tsc(); |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 600 | } |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 601 | } |
| 602 | bitvec *immediate_assignment = bitvec_alloc(22) /* without plen */; |
| 603 | bitvec_unhex(immediate_assignment, |
| 604 | "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 605 | |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 606 | |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 607 | if (failure) { |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 608 | plen = Encoding::write_immediate_assignment_reject( |
| 609 | immediate_assignment, ra, Fn, |
| 610 | burst_type); |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 611 | immediate_assignment_reject(); |
| 612 | } |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 613 | else { |
| 614 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 615 | " - TRX=%d (%d) TS=%d TA=%d TSC=%d TFI=%d USF=%d\n", |
| 616 | trx_no, m_bts.trx[trx_no].arfcn, ts_no, ta, tsc, |
| 617 | tbf ? tbf->tfi() : -1, usf); |
| 618 | |
| 619 | plen = Encoding::write_immediate_assignment( |
| 620 | tbf, immediate_assignment, 0, ra, Fn, ta, |
| 621 | m_bts.trx[trx_no].arfcn, ts_no, tsc, usf, 0, sb_fn, |
| 622 | m_bts.alpha, m_bts.gamma, -1, burst_type, sb); |
| 623 | } |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 624 | |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 625 | if (plen >= 0) { |
| 626 | immediate_assignment_ul_tbf(); |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 627 | pcu_l1if_tx_agch(immediate_assignment, plen); |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 628 | } |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 629 | |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 630 | bitvec_free(immediate_assignment); |
| 631 | |
aravind sirsikar | c0c3afd | 2016-11-09 16:27:00 +0530 | [diff] [blame] | 632 | return rc; |
Holger Hans Peter Freyther | 02beed5 | 2013-10-26 20:56:20 +0200 | [diff] [blame] | 633 | } |
| 634 | |
bhargava | 628dcfb | 2016-09-14 20:30:31 +0530 | [diff] [blame] | 635 | uint8_t BTS::is_single_block(uint16_t ra, enum ph_burst_type burst_type, |
| 636 | uint8_t is_11bit, uint16_t *ms_class, uint16_t *priority) |
| 637 | { |
| 638 | uint8_t sb = 0, val = 0; |
| 639 | |
| 640 | if (!is_11bit && (burst_type == GSM_L1_BURST_TYPE_ACCESS_0)) { |
| 641 | |
| 642 | if ((ra & 0xf8) == 0x70) { |
| 643 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single block " |
| 644 | "allocation\n"); |
| 645 | sb = 1; |
| 646 | } else if (m_bts.force_two_phase) { |
| 647 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single " |
| 648 | "phase access, but we force two phase " |
| 649 | "access\n"); |
| 650 | sb = 1; |
| 651 | } |
| 652 | |
| 653 | } else if (is_11bit && |
| 654 | ((burst_type == GSM_L1_BURST_TYPE_ACCESS_1) || |
| 655 | (burst_type == GSM_L1_BURST_TYPE_ACCESS_2))) { |
| 656 | |
| 657 | val = !!(ra & (1 << 10)); |
| 658 | |
| 659 | if (!val) { |
| 660 | if (m_bts.force_two_phase) { |
| 661 | LOGP(DRLCMAC, LOGL_DEBUG, "EGPRS 11 bit RACH " |
| 662 | "received. MS requests single phase " |
| 663 | "access but we force two phase " |
| 664 | "access\n"); |
| 665 | sb = 1; |
| 666 | } else { |
| 667 | sb = 0; |
| 668 | *ms_class = (ra & 0x3e0) >> 5; |
| 669 | *priority = (ra & 0x18) >> 3; |
| 670 | } |
| 671 | |
| 672 | } else { |
| 673 | LOGP(DRLCMAC, LOGL_DEBUG, "EGPRS 11 bit RACH received." |
| 674 | "MS requests single block allocation\n"); |
| 675 | sb = 1; |
| 676 | } |
| 677 | |
| 678 | } else if (is_11bit && |
| 679 | (burst_type == GSM_L1_BURST_TYPE_ACCESS_0)) { |
| 680 | LOGP(DRLCMAC, LOGL_ERROR, |
| 681 | "Error: GPRS 11 bit RACH not supported\n"); |
| 682 | |
| 683 | } else if (burst_type == GSM_L1_BURST_TYPE_NONE) { |
| 684 | LOGP(DRLCMAC, LOGL_DEBUG, "pcu has not received burst type " |
| 685 | "from bts \n"); |
| 686 | |
| 687 | if ((ra & 0xf8) == 0x70) { |
| 688 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single block " |
| 689 | "allocation\n"); |
| 690 | sb = 1; |
| 691 | } else if (m_bts.force_two_phase) { |
| 692 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single " |
| 693 | "phase access, but we force two phase " |
| 694 | "access\n"); |
| 695 | sb = 1; |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | return sb; |
| 700 | } |
| 701 | |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 702 | /* depending on the current TBF, we assign on PACCH or AGCH */ |
| 703 | void BTS::trigger_dl_ass( |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 704 | struct gprs_rlcmac_dl_tbf *dl_tbf, |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 705 | struct gprs_rlcmac_tbf *old_tbf) |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 706 | { |
| 707 | /* stop pending timer */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 708 | dl_tbf->stop_timer(); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 709 | |
| 710 | /* check for downlink tbf: */ |
| 711 | if (old_tbf) { |
| 712 | LOGP(DRLCMAC, LOGL_DEBUG, "Send dowlink assignment on " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 713 | "PACCH, because %s exists\n", tbf_name(old_tbf)); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 714 | old_tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 715 | |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 716 | old_tbf->was_releasing = old_tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE); |
| 717 | |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 718 | /* change state */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 719 | dl_tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Jacob Erlbeck | 9876a3b | 2016-01-29 18:51:04 +0100 | [diff] [blame] | 720 | if (!(dl_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) |
| 721 | dl_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 722 | /* start timer */ |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 723 | tbf_timer_start(dl_tbf, 0, Tassign_pacch); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 724 | } else { |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 725 | 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] | 726 | 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] | 727 | /* change state */ |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 728 | dl_tbf->set_state(GPRS_RLCMAC_ASSIGN); |
Daniel Willmann | 532a4b5 | 2014-08-07 12:39:26 +0200 | [diff] [blame] | 729 | dl_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_CCCH); |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 730 | /* send immediate assignment */ |
Jacob Erlbeck | 71e5511 | 2015-05-21 11:10:15 +0200 | [diff] [blame] | 731 | dl_tbf->bts->snd_dl_ass(dl_tbf, 0, dl_tbf->imsi()); |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 732 | dl_tbf->m_wait_confirm = 1; |
Holger Hans Peter Freyther | 24c1a5b | 2013-10-26 20:27:44 +0200 | [diff] [blame] | 733 | } |
| 734 | } |
| 735 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 736 | void BTS::snd_dl_ass(gprs_rlcmac_tbf *tbf, uint8_t poll, const char *imsi) |
| 737 | { |
| 738 | int plen; |
Jacob Erlbeck | 29e3a2f | 2016-02-05 19:04:23 +0100 | [diff] [blame] | 739 | unsigned int ts = tbf->first_ts; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 740 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 741 | 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] | 742 | bitvec *immediate_assignment = bitvec_alloc(22); /* without plen */ |
| 743 | bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 744 | /* use request reference that has maximum distance to current time, |
| 745 | * so the assignment will not conflict with possible RACH requests. */ |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 746 | LOGP(DRLCMAC, LOGL_DEBUG, " - TRX=%d (%d) TS=%d TA=%d pollFN=%d\n", |
| 747 | tbf->trx->trx_no, tbf->trx->arfcn, |
| 748 | ts, tbf->ta(), poll ? tbf->poll_fn : -1); |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 749 | plen = Encoding::write_immediate_assignment(tbf, immediate_assignment, 1, 125, |
Jacob Erlbeck | 2ca86af | 2016-01-20 18:26:13 +0100 | [diff] [blame] | 750 | (tbf->pdch[ts]->last_rts_fn + 21216) % 2715648, tbf->ta(), |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 751 | tbf->trx->arfcn, ts, tbf->tsc(), 7, poll, |
| 752 | tbf->poll_fn, m_bts.alpha, m_bts.gamma, -1); |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 753 | if (plen >= 0) { |
| 754 | immediate_assignment_dl_tbf(); |
Jacob Erlbeck | 2647a33 | 2016-02-01 16:13:38 +0100 | [diff] [blame] | 755 | pcu_l1if_tx_pch(immediate_assignment, plen, imsi); |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 756 | } |
| 757 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 758 | bitvec_free(immediate_assignment); |
| 759 | } |
| 760 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 761 | |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 762 | 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] | 763 | { |
| 764 | GprsMs *ms; |
| 765 | ms = ms_store().create_ms(); |
| 766 | |
| 767 | ms->set_timeout(m_bts.ms_idle_sec); |
| 768 | ms->set_ms_class(ms_class); |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 769 | ms->set_egprs_ms_class(egprs_ms_class); |
Jacob Erlbeck | cb1b494 | 2015-06-19 10:59:58 +0200 | [diff] [blame] | 770 | |
| 771 | return ms; |
| 772 | } |
| 773 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 774 | /* |
| 775 | * PDCH code below. TODO: move to a separate file |
| 776 | */ |
| 777 | |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 778 | void gprs_rlcmac_pdch::enable() |
| 779 | { |
| 780 | /* TODO: Check if there are still allocated resources.. */ |
| 781 | INIT_LLIST_HEAD(&paging_list); |
| 782 | m_is_enabled = 1; |
| 783 | } |
| 784 | |
| 785 | void gprs_rlcmac_pdch::disable() |
| 786 | { |
| 787 | /* TODO.. kick free_resources once we know the TRX/TS we are on */ |
| 788 | m_is_enabled = 0; |
| 789 | } |
| 790 | |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 791 | void gprs_rlcmac_pdch::free_resources() |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 792 | { |
| 793 | struct gprs_rlcmac_paging *pag; |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 794 | |
| 795 | /* we are not enabled. there should be no resources */ |
| 796 | if (!is_enabled()) |
| 797 | return; |
| 798 | |
| 799 | /* kick all TBF on slot */ |
| 800 | gprs_rlcmac_tbf::free_all(this); |
| 801 | |
| 802 | /* flush all pending paging messages */ |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 803 | while ((pag = dequeue_paging())) |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 804 | talloc_free(pag); |
| 805 | |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 806 | trx->bts->sba()->free_resources(this); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 807 | } |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 808 | |
| 809 | struct gprs_rlcmac_paging *gprs_rlcmac_pdch::dequeue_paging() |
| 810 | { |
| 811 | struct gprs_rlcmac_paging *pag; |
| 812 | |
| 813 | if (llist_empty(&paging_list)) |
| 814 | return NULL; |
| 815 | pag = llist_entry(paging_list.next, struct gprs_rlcmac_paging, list); |
| 816 | llist_del(&pag->list); |
| 817 | |
| 818 | return pag; |
| 819 | } |
| 820 | |
| 821 | struct msgb *gprs_rlcmac_pdch::packet_paging_request() |
| 822 | { |
| 823 | struct gprs_rlcmac_paging *pag; |
| 824 | struct msgb *msg; |
| 825 | unsigned wp = 0, len; |
| 826 | |
| 827 | /* no paging, no message */ |
| 828 | pag = dequeue_paging(); |
| 829 | if (!pag) |
| 830 | return NULL; |
| 831 | |
| 832 | LOGP(DRLCMAC, LOGL_DEBUG, "Scheduling paging\n"); |
| 833 | |
| 834 | /* alloc message */ |
| 835 | msg = msgb_alloc(23, "pag ctrl block"); |
| 836 | if (!msg) { |
| 837 | talloc_free(pag); |
| 838 | return NULL; |
| 839 | } |
| 840 | bitvec *pag_vec = bitvec_alloc(23); |
| 841 | if (!pag_vec) { |
| 842 | msgb_free(msg); |
| 843 | talloc_free(pag); |
| 844 | return NULL; |
| 845 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 846 | wp = Encoding::write_packet_paging_request(pag_vec); |
Holger Hans Peter Freyther | 24e98d0 | 2013-10-19 18:15:44 +0200 | [diff] [blame] | 847 | |
| 848 | /* loop until message is full */ |
| 849 | while (pag) { |
| 850 | /* try to add paging */ |
| 851 | if ((pag->identity_lv[1] & 0x07) == 4) { |
| 852 | /* TMSI */ |
| 853 | LOGP(DRLCMAC, LOGL_DEBUG, "- TMSI=0x%08x\n", |
| 854 | ntohl(*((uint32_t *)(pag->identity_lv + 1)))); |
| 855 | len = 1 + 1 + 1 + 32 + 2 + 1; |
| 856 | if (pag->identity_lv[0] != 5) { |
| 857 | LOGP(DRLCMAC, LOGL_ERROR, "TMSI paging with " |
| 858 | "MI != 5 octets!\n"); |
| 859 | goto continue_next; |
| 860 | } |
| 861 | } else { |
| 862 | /* MI */ |
| 863 | LOGP(DRLCMAC, LOGL_DEBUG, "- MI=%s\n", |
| 864 | osmo_hexdump(pag->identity_lv + 1, |
| 865 | pag->identity_lv[0])); |
| 866 | len = 1 + 1 + 1 + 4 + (pag->identity_lv[0]<<3) + 2 + 1; |
| 867 | if (pag->identity_lv[0] > 8) { |
| 868 | LOGP(DRLCMAC, LOGL_ERROR, "Paging with " |
| 869 | "MI > 8 octets!\n"); |
| 870 | goto continue_next; |
| 871 | } |
| 872 | } |
| 873 | if (wp + len > 184) { |
| 874 | LOGP(DRLCMAC, LOGL_DEBUG, "- Does not fit, so schedule " |
| 875 | "next time\n"); |
| 876 | /* put back paging record, because does not fit */ |
| 877 | llist_add_tail(&pag->list, &paging_list); |
| 878 | break; |
| 879 | } |
Holger Hans Peter Freyther | 63f29d6 | 2013-10-19 19:04:03 +0200 | [diff] [blame] | 880 | 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] | 881 | pag->identity_lv + 1, pag->chan_needed); |
| 882 | |
| 883 | continue_next: |
| 884 | talloc_free(pag); |
| 885 | pag = dequeue_paging(); |
| 886 | } |
| 887 | |
| 888 | bitvec_pack(pag_vec, msgb_put(msg, 23)); |
| 889 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| 890 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Paging Request +++++++++++++++++++++++++\n"); |
| 891 | decode_gsm_rlcmac_downlink(pag_vec, mac_control_block); |
| 892 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 893 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Paging Request -------------------------\n"); |
| 894 | bitvec_free(pag_vec); |
| 895 | talloc_free(mac_control_block); |
| 896 | |
| 897 | return msg; |
| 898 | } |
| 899 | |
Holger Hans Peter Freyther | f098489 | 2013-10-19 18:28:59 +0200 | [diff] [blame] | 900 | void gprs_rlcmac_pdch::add_paging(struct gprs_rlcmac_paging *pag) |
| 901 | { |
| 902 | llist_add(&pag->list, &paging_list); |
| 903 | } |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 904 | |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 905 | 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] | 906 | { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 907 | struct gprs_rlcmac_tbf *tbf, *new_tbf; |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 908 | uint32_t tlli = 0; |
| 909 | |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 910 | tlli = packet->TLLI; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 911 | tbf = bts()->ul_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 912 | if (!tbf) |
| 913 | tbf = bts()->dl_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 914 | |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 915 | if (!tbf) { |
| 916 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK with " |
Holger Hans Peter Freyther | 15bb1a2 | 2013-10-27 12:30:46 +0100 | [diff] [blame] | 917 | "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] | 918 | fn, tlli, trx_no(), ts_no); |
| 919 | return; |
| 920 | } |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 921 | tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 922 | |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 923 | 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] | 924 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
| 925 | |
| 926 | /* check if this control ack belongs to packet uplink ack */ |
| 927 | 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] | 928 | 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] | 929 | tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE; |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 930 | if ((tbf->state_flags & |
| 931 | (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) { |
| 932 | tbf->state_flags &= |
| 933 | ~(1 << GPRS_RLCMAC_FLAG_TO_UL_ACK); |
| 934 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered uplink " |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 935 | "ack for UL %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 936 | } |
| 937 | tbf_free(tbf); |
| 938 | return; |
| 939 | } |
| 940 | 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] | 941 | 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] | 942 | /* reset N3105 */ |
| 943 | tbf->n3105 = 0; |
| 944 | tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 945 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 946 | new_tbf = tbf->ms() ? tbf->ms()->dl_tbf() : NULL; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 947 | if (!new_tbf) { |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 948 | LOGP(DRLCMAC, LOGL_ERROR, "Got ACK, but DL " |
Holger Hans Peter Freyther | 875fc89 | 2013-10-27 13:35:46 +0100 | [diff] [blame] | 949 | "TBF is gone TLLI=0x%08x\n", tlli); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 950 | return; |
| 951 | } |
Jacob Erlbeck | 7d5157e | 2016-02-01 18:15:35 +0100 | [diff] [blame] | 952 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE) && |
| 953 | tbf->direction == new_tbf->direction) |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 954 | tbf_free(tbf); |
| 955 | |
Jacob Erlbeck | 9876a3b | 2016-01-29 18:51:04 +0100 | [diff] [blame] | 956 | if ((new_tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) { |
| 957 | /* We now know that the PACCH really existed */ |
| 958 | LOGP(DRLCMAC, LOGL_INFO, |
| 959 | "The TBF has been confirmed on the PACCH, " |
| 960 | "changed type from CCCH to PACCH for %s\n", |
| 961 | tbf_name(new_tbf)); |
| 962 | new_tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH); |
| 963 | new_tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
| 964 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 965 | new_tbf->set_state(GPRS_RLCMAC_FLOW); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 966 | /* stop pending assignment timer */ |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 967 | new_tbf->stop_timer(); |
| 968 | if ((new_tbf->state_flags & |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 969 | (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 970 | new_tbf->state_flags &= |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 971 | ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ASS); |
| 972 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered downlink " |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 973 | "assignment for %s\n", tbf_name(new_tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 974 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 975 | tbf_assign_control_ts(new_tbf); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 976 | return; |
| 977 | } |
| 978 | 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] | 979 | 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] | 980 | /* reset N3105 */ |
| 981 | tbf->n3105 = 0; |
| 982 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 983 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 984 | new_tbf = tbf->ms() ? tbf->ms()->ul_tbf() : NULL; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 985 | if (!new_tbf) { |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 986 | LOGP(DRLCMAC, LOGL_ERROR, "Got ACK, but UL " |
Holger Hans Peter Freyther | 8d0e489 | 2013-10-27 12:42:58 +0100 | [diff] [blame] | 987 | "TBF is gone TLLI=0x%08x\n", tlli); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 988 | return; |
| 989 | } |
Jacob Erlbeck | 7d5157e | 2016-02-01 18:15:35 +0100 | [diff] [blame] | 990 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE) && |
| 991 | tbf->direction == new_tbf->direction) |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 992 | tbf_free(tbf); |
| 993 | |
| 994 | new_tbf->set_state(GPRS_RLCMAC_FLOW); |
| 995 | if ((new_tbf->state_flags & |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 996 | (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) { |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 997 | new_tbf->state_flags &= |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 998 | ~(1 << GPRS_RLCMAC_FLAG_TO_UL_ASS); |
| 999 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered uplink " |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 1000 | "assignment for UL %s\n", tbf_name(new_tbf)); |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 1001 | } |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 1002 | tbf_assign_control_ts(new_tbf); |
Jacob Erlbeck | c8cbfc2 | 2015-09-01 11:38:40 +0200 | [diff] [blame] | 1003 | /* there might be LLC packets waiting in the queue, but the DL |
| 1004 | * TBF might have been released while the UL TBF has been |
| 1005 | * established */ |
| 1006 | if (new_tbf->ms()->need_dl_tbf()) |
| 1007 | new_tbf->establish_dl_tbf_on_pacch(); |
| 1008 | |
Holger Hans Peter Freyther | 396f416 | 2013-10-27 11:02:05 +0100 | [diff] [blame] | 1009 | return; |
| 1010 | } |
| 1011 | LOGP(DRLCMAC, LOGL_ERROR, "Error: received PACET CONTROL ACK " |
| 1012 | "at no request\n"); |
| 1013 | } |
| 1014 | |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1015 | static void get_rx_qual_meas(struct pcu_l1_meas *meas, uint8_t rx_qual_enc) |
| 1016 | { |
| 1017 | static const int16_t rx_qual_map[] = { |
| 1018 | 0, /* 0,14 % */ |
| 1019 | 0, /* 0,28 % */ |
| 1020 | 1, /* 0,57 % */ |
| 1021 | 1, /* 1,13 % */ |
| 1022 | 2, /* 2,26 % */ |
| 1023 | 5, /* 4,53 % */ |
| 1024 | 9, /* 9,05 % */ |
| 1025 | 18, /* 18,10 % */ |
| 1026 | }; |
| 1027 | |
| 1028 | meas->set_ms_rx_qual(rx_qual_map[ |
| 1029 | OSMO_MIN(rx_qual_enc, ARRAY_SIZE(rx_qual_map)-1) |
| 1030 | ]); |
| 1031 | } |
| 1032 | |
| 1033 | static void get_meas(struct pcu_l1_meas *meas, |
| 1034 | const Packet_Resource_Request_t *qr) |
| 1035 | { |
| 1036 | unsigned i; |
| 1037 | |
| 1038 | meas->set_ms_c_value(qr->C_VALUE); |
| 1039 | if (qr->Exist_SIGN_VAR) |
| 1040 | meas->set_ms_sign_var((qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
| 1041 | |
| 1042 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->Slot), ARRAY_SIZE(meas->ts)); i++) |
| 1043 | { |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 1044 | if (qr->Slot[i].Exist) { |
| 1045 | LOGP(DRLCMAC, LOGL_INFO, |
| 1046 | "Packet resource request: i_level[%d] = %d\n", |
| 1047 | i, qr->Slot[i].I_LEVEL); |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1048 | meas->set_ms_i_level(i, -2 * qr->Slot[i].I_LEVEL); |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 1049 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | static void get_meas(struct pcu_l1_meas *meas, |
| 1054 | const Channel_Quality_Report_t *qr) |
| 1055 | { |
| 1056 | unsigned i; |
| 1057 | |
| 1058 | get_rx_qual_meas(meas, qr->RXQUAL); |
| 1059 | meas->set_ms_c_value(qr->C_VALUE); |
| 1060 | meas->set_ms_sign_var((qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
| 1061 | |
| 1062 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->Slot), ARRAY_SIZE(meas->ts)); i++) |
| 1063 | { |
Jacob Erlbeck | da1a79e | 2015-06-11 18:09:00 +0200 | [diff] [blame] | 1064 | if (qr->Slot[i].Exist) { |
| 1065 | LOGP(DRLCMAC, LOGL_INFO, |
| 1066 | "Channel quality report: i_level[%d] = %d\n", |
| 1067 | i, qr->Slot[i].I_LEVEL_TN); |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1068 | 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] | 1069 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1070 | } |
| 1071 | } |
| 1072 | |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 1073 | 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] | 1074 | { |
| 1075 | int8_t tfi = 0; /* must be signed */ |
Daniel Willmann | 6c813fc | 2014-07-30 19:12:27 +0200 | [diff] [blame] | 1076 | struct gprs_rlcmac_dl_tbf *tbf; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1077 | int rc; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1078 | struct pcu_l1_meas meas; |
Jacob Erlbeck | 419b034 | 2016-01-14 13:40:01 +0100 | [diff] [blame] | 1079 | int num_blocks; |
| 1080 | uint8_t bits_data[RLC_GPRS_WS/8]; |
| 1081 | bitvec bits; |
| 1082 | int bsn_begin, bsn_end; |
| 1083 | char show_bits[RLC_GPRS_WS + 1]; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1084 | |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 1085 | tfi = ack_nack->DOWNLINK_TFI; |
Daniel Willmann | febf1a0 | 2014-07-02 17:58:16 +0200 | [diff] [blame] | 1086 | 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] | 1087 | if (!tbf) { |
| 1088 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " |
| 1089 | "unknown FN=%u TFI=%d (TRX %d TS %d)\n", |
| 1090 | fn, tfi, trx_no(), ts_no); |
| 1091 | return; |
| 1092 | } |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 1093 | if (tbf->tfi() != tfi) { |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1094 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " |
| 1095 | "wrong TFI=%d, ignoring!\n", tfi); |
| 1096 | return; |
| 1097 | } |
| 1098 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_DL_ACK); |
| 1099 | if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) { |
| 1100 | tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ACK); |
| 1101 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered downlink ack " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 1102 | "for %s\n", tbf_name(tbf)); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1103 | } |
| 1104 | /* reset N3105 */ |
| 1105 | tbf->n3105 = 0; |
| 1106 | tbf->stop_t3191(); |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 1107 | 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] | 1108 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1109 | |
Jacob Erlbeck | 419b034 | 2016-01-14 13:40:01 +0100 | [diff] [blame] | 1110 | bits.data = bits_data; |
| 1111 | bits.data_len = sizeof(bits_data); |
| 1112 | bits.cur_bit = 0; |
| 1113 | |
| 1114 | num_blocks = Decoding::decode_gprs_acknack_bits( |
| 1115 | &ack_nack->Ack_Nack_Description, &bits, |
| 1116 | &bsn_begin, &bsn_end, &tbf->m_window); |
| 1117 | |
| 1118 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 1119 | "Got GPRS DL ACK bitmap: SSN: %d, BSN %d to %d - 1 (%d blocks), " |
| 1120 | "\"%s\"\n", |
| 1121 | ack_nack->Ack_Nack_Description.STARTING_SEQUENCE_NUMBER, |
| 1122 | bsn_begin, bsn_end, num_blocks, |
| 1123 | (Decoding::extract_rbb(&bits, show_bits), show_bits)); |
| 1124 | |
Daniel Willmann | fc03bbe | 2014-05-30 17:57:59 +0200 | [diff] [blame] | 1125 | rc = tbf->rcvd_dl_ack( |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 1126 | ack_nack->Ack_Nack_Description.FINAL_ACK_INDICATION, |
Jacob Erlbeck | 419b034 | 2016-01-14 13:40:01 +0100 | [diff] [blame] | 1127 | bsn_begin, &bits); |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1128 | if (rc == 1) { |
| 1129 | tbf_free(tbf); |
| 1130 | return; |
| 1131 | } |
| 1132 | /* check for channel request */ |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 1133 | if (ack_nack->Exist_Channel_Request_Description) { |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 1134 | |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 1135 | bts()->channel_request_description(); |
| 1136 | |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 1137 | /* This call will register the new TBF with the MS on success */ |
aravind sirsikar | ed3413e | 2016-11-11 17:15:10 +0530 | [diff] [blame] | 1138 | gprs_rlcmac_ul_tbf *ul_tbf = tbf_alloc_ul(bts_data(), |
| 1139 | tbf->trx->trx_no, |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 1140 | tbf->ms_class(), tbf->ms()->egprs_ms_class(), |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 1141 | tbf->tlli(), tbf->ta(), tbf->ms()); |
Jacob Erlbeck | d3eac28 | 2015-05-22 15:47:55 +0200 | [diff] [blame] | 1142 | |
aravind sirsikar | ed3413e | 2016-11-11 17:15:10 +0530 | [diff] [blame] | 1143 | /* schedule uplink assignment or reject*/ |
| 1144 | if (ul_tbf) { |
| 1145 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " |
| 1146 | "message, so we provide one:\n"); |
| 1147 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 1148 | } else { |
| 1149 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " |
| 1150 | "message, so we pacekt access reject:\n"); |
| 1151 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS_REJ; |
| 1152 | } |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1153 | } |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1154 | /* get measurements */ |
| 1155 | if (tbf->ms()) { |
| 1156 | get_meas(&meas, &ack_nack->Channel_Quality_Report); |
| 1157 | tbf->ms()->update_l1_meas(&meas); |
| 1158 | } |
Holger Hans Peter Freyther | 5a96581 | 2013-10-27 11:07:17 +0100 | [diff] [blame] | 1159 | } |
| 1160 | |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1161 | void gprs_rlcmac_pdch::rcv_control_egprs_dl_ack_nack(EGPRS_PD_AckNack_t *ack_nack, uint32_t fn) |
| 1162 | { |
| 1163 | int8_t tfi = 0; /* must be signed */ |
| 1164 | struct gprs_rlcmac_dl_tbf *tbf; |
| 1165 | struct pcu_l1_meas meas; |
| 1166 | int rc; |
| 1167 | int num_blocks; |
| 1168 | uint8_t bits_data[RLC_EGPRS_MAX_WS/8]; |
| 1169 | char show_bits[RLC_EGPRS_MAX_WS + 1]; |
| 1170 | bitvec bits; |
| 1171 | int bsn_begin, bsn_end; |
| 1172 | |
| 1173 | tfi = ack_nack->DOWNLINK_TFI; |
| 1174 | tbf = bts()->dl_tbf_by_poll_fn(fn, trx_no(), ts_no); |
| 1175 | if (!tbf) { |
| 1176 | LOGP(DRLCMAC, LOGL_NOTICE, "EGPRS PACKET DOWNLINK ACK with " |
| 1177 | "unknown FN=%u TFI=%d (TRX %d TS %d)\n", |
| 1178 | fn, tfi, trx_no(), ts_no); |
| 1179 | return; |
| 1180 | } |
| 1181 | if (tbf->tfi() != tfi) { |
| 1182 | LOGP(DRLCMAC, LOGL_NOTICE, "EGPRS PACKET DOWNLINK ACK with " |
| 1183 | "wrong TFI=%d, ignoring!\n", tfi); |
| 1184 | return; |
| 1185 | } |
| 1186 | tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_DL_ACK); |
| 1187 | if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) { |
| 1188 | tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_TO_DL_ACK); |
| 1189 | LOGP(DRLCMAC, LOGL_NOTICE, "Recovered EGPRS downlink ack " |
| 1190 | "for %s\n", tbf_name(tbf)); |
| 1191 | } |
| 1192 | /* reset N3105 */ |
| 1193 | tbf->n3105 = 0; |
| 1194 | tbf->stop_t3191(); |
| 1195 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 1196 | "RX: [PCU <- BTS] %s EGPRS Packet Downlink Ack/Nack\n", |
| 1197 | tbf_name(tbf)); |
| 1198 | tbf->poll_state = GPRS_RLCMAC_POLL_NONE; |
| 1199 | |
| 1200 | LOGP(DRLCMAC, LOGL_DEBUG, "EGPRS ACK/NACK: " |
| 1201 | "ut: %d, final: %d, bow: %d, eow: %d, ssn: %d, have_crbb: %d, " |
| 1202 | "urbb_len:%d, %p, %p, %d, %d, win: %d-%d, urbb: %s\n", |
| 1203 | (int)ack_nack->EGPRS_AckNack.UnionType, |
| 1204 | (int)ack_nack->EGPRS_AckNack.Desc.FINAL_ACK_INDICATION, |
| 1205 | (int)ack_nack->EGPRS_AckNack.Desc.BEGINNING_OF_WINDOW, |
| 1206 | (int)ack_nack->EGPRS_AckNack.Desc.END_OF_WINDOW, |
| 1207 | (int)ack_nack->EGPRS_AckNack.Desc.STARTING_SEQUENCE_NUMBER, |
| 1208 | (int)ack_nack->EGPRS_AckNack.Desc.Exist_CRBB, |
| 1209 | (int)ack_nack->EGPRS_AckNack.Desc.URBB_LENGTH, |
| 1210 | (void *)&ack_nack->EGPRS_AckNack.UnionType, |
| 1211 | (void *)&ack_nack->EGPRS_AckNack.Desc, |
| 1212 | (int)offsetof(EGPRS_AckNack_t, Desc), |
| 1213 | (int)offsetof(EGPRS_AckNack_w_len_t, Desc), |
| 1214 | tbf->m_window.v_a(), |
| 1215 | tbf->m_window.v_s(), |
| 1216 | osmo_hexdump((const uint8_t *)&ack_nack->EGPRS_AckNack.Desc.URBB, |
| 1217 | sizeof(ack_nack->EGPRS_AckNack.Desc.URBB))); |
| 1218 | |
| 1219 | bits.data = bits_data; |
| 1220 | bits.data_len = sizeof(bits_data); |
| 1221 | bits.cur_bit = 0; |
| 1222 | |
| 1223 | num_blocks = Decoding::decode_egprs_acknack_bits( |
| 1224 | &ack_nack->EGPRS_AckNack.Desc, &bits, |
| 1225 | &bsn_begin, &bsn_end, &tbf->m_window); |
| 1226 | |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1227 | LOGP(DRLCMAC, LOGL_DEBUG, |
Jacob Erlbeck | d7630f2 | 2016-01-14 18:05:44 +0100 | [diff] [blame] | 1228 | "Got EGPRS DL ACK bitmap: SSN: %d, BSN %d to %d - 1 (%d blocks), " |
| 1229 | "\"%s\"\n", |
| 1230 | ack_nack->EGPRS_AckNack.Desc.STARTING_SEQUENCE_NUMBER, |
| 1231 | bsn_begin, bsn_end, num_blocks, |
| 1232 | (Decoding::extract_rbb(&bits, show_bits), show_bits) |
| 1233 | ); |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1234 | |
Jacob Erlbeck | d7630f2 | 2016-01-14 18:05:44 +0100 | [diff] [blame] | 1235 | rc = tbf->rcvd_dl_ack( |
| 1236 | ack_nack->EGPRS_AckNack.Desc.FINAL_ACK_INDICATION, |
| 1237 | bsn_begin, &bits); |
| 1238 | if (rc == 1) { |
| 1239 | tbf_free(tbf); |
| 1240 | return; |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1241 | } |
| 1242 | |
| 1243 | /* check for channel request */ |
| 1244 | if (ack_nack->Exist_ChannelRequestDescription) { |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1245 | |
sivasankari | 168911b | 2016-11-25 19:53:36 +0530 | [diff] [blame^] | 1246 | bts()->channel_request_description(); |
| 1247 | |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1248 | /* This call will register the new TBF with the MS on success */ |
aravind sirsikar | ed3413e | 2016-11-11 17:15:10 +0530 | [diff] [blame] | 1249 | gprs_rlcmac_ul_tbf *ul_tbf = tbf_alloc_ul(bts_data(), |
| 1250 | tbf->trx->trx_no, |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1251 | tbf->ms_class(), tbf->ms()->egprs_ms_class(), |
| 1252 | tbf->tlli(), tbf->ta(), tbf->ms()); |
| 1253 | |
aravind sirsikar | ed3413e | 2016-11-11 17:15:10 +0530 | [diff] [blame] | 1254 | /* schedule uplink assignment or reject*/ |
| 1255 | if (ul_tbf) { |
| 1256 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " |
| 1257 | "message, so we provide one:\n"); |
| 1258 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| 1259 | } else { |
| 1260 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " |
| 1261 | "message, so we send packet access reject:\n"); |
| 1262 | tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS_REJ; |
| 1263 | } |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1264 | } |
| 1265 | |
| 1266 | /* get measurements */ |
| 1267 | if (tbf->ms()) { |
| 1268 | /* TODO: Implement Measurements parsing for EGPRS */ |
| 1269 | /* |
| 1270 | get_meas(&meas, &ack_nack->Channel_Quality_Report); |
| 1271 | tbf->ms()->update_l1_meas(&meas); |
| 1272 | */ |
| 1273 | } |
| 1274 | } |
| 1275 | |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 1276 | 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] | 1277 | { |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1278 | struct gprs_rlcmac_sba *sba; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1279 | |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 1280 | if (request->ID.UnionType) { |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 1281 | struct gprs_rlcmac_ul_tbf *ul_tbf = NULL; |
| 1282 | struct gprs_rlcmac_dl_tbf *dl_tbf = NULL; |
Holger Hans Peter Freyther | 8021644 | 2013-10-27 15:42:25 +0100 | [diff] [blame] | 1283 | uint32_t tlli = request->ID.u.TLLI; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1284 | uint8_t ms_class = 0; |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1285 | uint8_t egprs_ms_class = 0; |
Max | 9bbe160 | 2016-07-18 12:50:18 +0200 | [diff] [blame] | 1286 | uint8_t ta = GSM48_TA_INVALID; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1287 | struct pcu_l1_meas meas; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1288 | |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 1289 | GprsMs *ms = bts()->ms_by_tlli(tlli); |
| 1290 | /* Keep the ms, even if it gets idle temporarily */ |
| 1291 | GprsMs::Guard guard(ms); |
| 1292 | |
| 1293 | if (ms) { |
| 1294 | ul_tbf = ms->ul_tbf(); |
| 1295 | dl_tbf = ms->dl_tbf(); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 1296 | ta = ms->ta(); |
Jacob Erlbeck | e43460b | 2015-05-13 13:33:12 +0200 | [diff] [blame] | 1297 | } |
| 1298 | |
Jacob Erlbeck | 5f93f85 | 2016-01-21 20:48:39 +0100 | [diff] [blame] | 1299 | /* We got a RACH so the MS was in packet idle mode and thus |
| 1300 | * didn't have any active TBFs */ |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1301 | if (ul_tbf) { |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1302 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 1303 | "TLLI=0x%08x while %s still " |
Jacob Erlbeck | 537b149 | 2015-08-21 17:52:07 +0200 | [diff] [blame] | 1304 | "exists. Killing pending UL TBF\n", |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1305 | tlli, tbf_name(ul_tbf)); |
| 1306 | tbf_free(ul_tbf); |
| 1307 | ul_tbf = NULL; |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1308 | } |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1309 | |
Jacob Erlbeck | cf6ae9d | 2015-08-31 14:32:05 +0200 | [diff] [blame] | 1310 | if (dl_tbf) { |
| 1311 | LOGP(DRLCMACUL, LOGL_NOTICE, "Got RACH from " |
| 1312 | "TLLI=0x%08x while %s still exists. " |
Jacob Erlbeck | ae0a799 | 2015-09-01 11:28:25 +0200 | [diff] [blame] | 1313 | "Release pending DL TBF\n", tlli, |
Jacob Erlbeck | cf6ae9d | 2015-08-31 14:32:05 +0200 | [diff] [blame] | 1314 | tbf_name(dl_tbf)); |
Jacob Erlbeck | 5f93f85 | 2016-01-21 20:48:39 +0100 | [diff] [blame] | 1315 | tbf_free(dl_tbf); |
| 1316 | dl_tbf = NULL; |
Jacob Erlbeck | cf6ae9d | 2015-08-31 14:32:05 +0200 | [diff] [blame] | 1317 | } |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1318 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF " |
| 1319 | "in packet resource request of single " |
| 1320 | "block, so we provide one:\n"); |
| 1321 | sba = bts()->sba()->find(this, fn); |
| 1322 | if (!sba) { |
| 1323 | LOGP(DRLCMAC, LOGL_NOTICE, "MS requests UL TBF " |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1324 | "in packet resource request of single " |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1325 | "block, but there is no resource request " |
| 1326 | "scheduled!\n"); |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1327 | } else { |
| 1328 | ta = sba->ta; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1329 | bts()->sba()->free_sba(sba); |
| 1330 | } |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1331 | if (request->Exist_MS_Radio_Access_capability) { |
| 1332 | ms_class = Decoding::get_ms_class_by_capability( |
| 1333 | &request->MS_Radio_Access_capability); |
| 1334 | egprs_ms_class = |
| 1335 | Decoding::get_egprs_ms_class_by_capability( |
| 1336 | &request->MS_Radio_Access_capability); |
| 1337 | } |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1338 | if (!ms_class) |
| 1339 | LOGP(DRLCMAC, LOGL_NOTICE, "MS does not give us a class.\n"); |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1340 | if (egprs_ms_class) |
| 1341 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 1342 | "MS supports EGPRS multislot class %d.\n", |
| 1343 | egprs_ms_class); |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 1344 | ul_tbf = tbf_alloc_ul(bts_data(), trx_no(), ms_class, |
| 1345 | egprs_ms_class, tlli, ta, ms); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1346 | if (!ul_tbf) |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1347 | return; |
Daniel Willmann | e481815 | 2014-08-15 16:52:09 +0200 | [diff] [blame] | 1348 | |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1349 | /* set control ts to current MS's TS, until assignment complete */ |
| 1350 | 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] | 1351 | ul_tbf->control_ts = ts_no; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1352 | /* schedule uplink assignment */ |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1353 | ul_tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1354 | |
Jacob Erlbeck | c3c5804 | 2015-09-28 17:55:32 +0200 | [diff] [blame] | 1355 | /* get capabilities */ |
| 1356 | if (ul_tbf->ms()) |
| 1357 | ul_tbf->ms()->set_egprs_ms_class(egprs_ms_class); |
| 1358 | |
Jacob Erlbeck | 51b1151 | 2015-06-11 16:54:50 +0200 | [diff] [blame] | 1359 | /* get measurements */ |
| 1360 | if (ul_tbf->ms()) { |
| 1361 | get_meas(&meas, request); |
| 1362 | ul_tbf->ms()->update_l1_meas(&meas); |
| 1363 | } |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1364 | return; |
| 1365 | } |
| 1366 | |
| 1367 | if (request->ID.u.Global_TFI.UnionType) { |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1368 | struct gprs_rlcmac_dl_tbf *dl_tbf; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1369 | int8_t tfi = request->ID.u.Global_TFI.u.DOWNLINK_TFI; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1370 | dl_tbf = bts()->dl_tbf_by_tfi(tfi, trx_no(), ts_no); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1371 | if (!dl_tbf) { |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1372 | 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] | 1373 | return; |
| 1374 | } |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1375 | LOGP(DRLCMAC, LOGL_ERROR, |
| 1376 | "RX: [PCU <- BTS] %s FIXME: Packet resource request\n", |
| 1377 | tbf_name(dl_tbf)); |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1378 | } else { |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1379 | struct gprs_rlcmac_ul_tbf *ul_tbf; |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1380 | int8_t tfi = request->ID.u.Global_TFI.u.UPLINK_TFI; |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1381 | ul_tbf = bts()->ul_tbf_by_tfi(tfi, trx_no(), ts_no); |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1382 | if (!ul_tbf) { |
Holger Hans Peter Freyther | 6b88cdd | 2013-10-27 15:44:21 +0100 | [diff] [blame] | 1383 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESSOURCE REQ unknown uplink TFI=%d\n", tfi); |
| 1384 | return; |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1385 | } |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 1386 | LOGP(DRLCMAC, LOGL_ERROR, |
| 1387 | "RX: [PCU <- BTS] %s FIXME: Packet resource request\n", |
| 1388 | tbf_name(ul_tbf)); |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1389 | } |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1390 | } |
| 1391 | |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1392 | 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] | 1393 | { |
| 1394 | struct gprs_rlcmac_sba *sba; |
| 1395 | |
| 1396 | sba = bts()->sba()->find(this, fn); |
| 1397 | if (!sba) { |
| 1398 | LOGP(DRLCMAC, LOGL_NOTICE, "MS send measurement " |
| 1399 | "in packet resource request of single " |
| 1400 | "block, but there is no resource request " |
Holger Hans Peter Freyther | 53a336f | 2013-10-27 12:47:48 +0100 | [diff] [blame] | 1401 | "scheduled! TLLI=0x%08x\n", report->TLLI); |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1402 | } else { |
Jacob Erlbeck | 1db67e0 | 2015-05-22 18:02:51 +0200 | [diff] [blame] | 1403 | GprsMs *ms = bts()->ms_store().get_ms(report->TLLI); |
| 1404 | if (!ms) |
| 1405 | LOGP(DRLCMAC, LOGL_NOTICE, "MS send measurement " |
| 1406 | "but TLLI 0x%08x is unknown\n", report->TLLI); |
| 1407 | else |
| 1408 | ms->set_ta(sba->ta); |
| 1409 | |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1410 | bts()->sba()->free_sba(sba); |
| 1411 | } |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1412 | gprs_rlcmac_meas_rep(report); |
Holger Hans Peter Freyther | 750ca67 | 2013-10-27 11:16:20 +0100 | [diff] [blame] | 1413 | } |
| 1414 | |
Holger Hans Peter Freyther | 8428088 | 2013-10-27 11:11:18 +0100 | [diff] [blame] | 1415 | /* Received Uplink RLC control block. */ |
| 1416 | int gprs_rlcmac_pdch::rcv_control_block( |
| 1417 | bitvec *rlc_block, uint32_t fn) |
| 1418 | { |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1419 | RlcMacUplink_t * ul_control_block = (RlcMacUplink_t *)talloc_zero(tall_pcu_ctx, RlcMacUplink_t); |
| 1420 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ RX : Uplink Control Block +++++++++++++++++++++++++\n"); |
| 1421 | decode_gsm_rlcmac_uplink(rlc_block, ul_control_block); |
| 1422 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 1423 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- RX : Uplink Control Block -------------------------\n"); |
Mrinal Mishra | f86307e | 2016-11-10 18:16:30 +0530 | [diff] [blame] | 1424 | bts()->rlc_rcvd_control(); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1425 | switch (ul_control_block->u.MESSAGE_TYPE) { |
| 1426 | case MT_PACKET_CONTROL_ACK: |
Holger Hans Peter Freyther | e1a075a | 2013-10-27 13:35:30 +0100 | [diff] [blame] | 1427 | 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] | 1428 | break; |
| 1429 | case MT_PACKET_DOWNLINK_ACK_NACK: |
Holger Hans Peter Freyther | 5da2014 | 2013-10-27 11:41:01 +0100 | [diff] [blame] | 1430 | 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] | 1431 | break; |
Jacob Erlbeck | ae9c575 | 2016-01-13 13:55:44 +0100 | [diff] [blame] | 1432 | case MT_EGPRS_PACKET_DOWNLINK_ACK_NACK: |
| 1433 | rcv_control_egprs_dl_ack_nack(&ul_control_block->u.Egprs_Packet_Downlink_Ack_Nack, fn); |
| 1434 | break; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1435 | case MT_PACKET_RESOURCE_REQUEST: |
Holger Hans Peter Freyther | 7a34471 | 2013-10-27 11:37:53 +0100 | [diff] [blame] | 1436 | 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] | 1437 | break; |
| 1438 | case MT_PACKET_MEASUREMENT_REPORT: |
Holger Hans Peter Freyther | cb5c49b | 2013-10-27 11:19:13 +0100 | [diff] [blame] | 1439 | 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] | 1440 | break; |
Holger Hans Peter Freyther | c1ae226 | 2013-10-27 10:50:35 +0100 | [diff] [blame] | 1441 | case MT_PACKET_UPLINK_DUMMY_CONTROL_BLOCK: |
| 1442 | /* ignoring it. change the SI to not force sending these? */ |
| 1443 | break; |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1444 | default: |
Holger Hans Peter Freyther | 1587764 | 2013-10-27 09:50:15 +0100 | [diff] [blame] | 1445 | bts()->decode_error(); |
Holger Hans Peter Freyther | 180def9 | 2013-10-27 10:36:37 +0100 | [diff] [blame] | 1446 | LOGP(DRLCMAC, LOGL_NOTICE, |
| 1447 | "RX: [PCU <- BTS] unknown control block(%d) received\n", |
| 1448 | ul_control_block->u.MESSAGE_TYPE); |
Holger Hans Peter Freyther | fcbc702 | 2013-10-26 17:38:37 +0200 | [diff] [blame] | 1449 | } |
| 1450 | talloc_free(ul_control_block); |
| 1451 | return 1; |
| 1452 | } |
| 1453 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 1454 | |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1455 | /* received RLC/MAC block from L1 */ |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 1456 | int gprs_rlcmac_pdch::rcv_block(uint8_t *data, uint8_t len, uint32_t fn, |
| 1457 | struct pcu_l1_meas *meas) |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 1458 | { |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1459 | GprsCodingScheme cs = GprsCodingScheme::getBySizeUL(len); |
| 1460 | if (!cs) { |
| 1461 | bts()->decode_error(); |
| 1462 | LOGP(DRLCMACUL, LOGL_ERROR, "Dropping data block with invalid" |
| 1463 | "length: %d)\n", len); |
| 1464 | return -EINVAL; |
| 1465 | } |
| 1466 | |
Alexander Couzens | 7fdbf89 | 2016-05-21 19:45:23 +0200 | [diff] [blame] | 1467 | bts()->rlc_ul_bytes(len); |
| 1468 | |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1469 | LOGP(DRLCMACUL, LOGL_DEBUG, "Got RLC block, coding scheme: %s, " |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 1470 | "length: %d (%d))\n", cs.name(), len, cs.usedSizeUL()); |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1471 | |
| 1472 | if (cs.isGprs()) |
| 1473 | return rcv_block_gprs(data, fn, meas, cs); |
| 1474 | |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1475 | if (cs.isEgprs()) |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1476 | return rcv_data_block(data, fn, meas, cs); |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1477 | |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1478 | bts()->decode_error(); |
| 1479 | LOGP(DRLCMACUL, LOGL_ERROR, "Unsupported coding scheme %s\n", |
| 1480 | cs.name()); |
| 1481 | return -EINVAL; |
| 1482 | } |
| 1483 | |
Alexander Couzens | 2fcfc29 | 2016-05-24 14:40:03 +0200 | [diff] [blame] | 1484 | /*! \brief process egprs and gprs data blocks */ |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1485 | 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] | 1486 | struct pcu_l1_meas *meas, GprsCodingScheme cs) |
| 1487 | { |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1488 | int rc; |
Jacob Erlbeck | f2ba4cb | 2016-01-07 18:59:28 +0100 | [diff] [blame] | 1489 | struct gprs_rlc_data_info rlc_dec; |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1490 | struct gprs_rlcmac_ul_tbf *tbf; |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 1491 | unsigned len = cs.sizeUL(); |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1492 | |
| 1493 | /* These are always data blocks, since EGPRS still uses CS-1 for |
| 1494 | * control blocks (see 44.060, section 10.3, 1st par.) |
| 1495 | */ |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1496 | if (cs.isEgprs()) { |
| 1497 | if (!bts()->bts_data()->egprs_enabled) { |
| 1498 | LOGP(DRLCMACUL, LOGL_ERROR, |
| 1499 | "Got %s RLC block but EGPRS is not enabled\n", |
| 1500 | cs.name()); |
| 1501 | return -EINVAL; |
| 1502 | } |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1503 | } |
| 1504 | |
Jacob Erlbeck | d88bb2e | 2015-12-11 14:53:29 +0100 | [diff] [blame] | 1505 | LOGP(DRLCMACUL, LOGL_DEBUG, " UL data: %s\n", osmo_hexdump(data, len)); |
| 1506 | |
Jacob Erlbeck | 39c6c7f | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 1507 | rc = Decoding::rlc_parse_ul_data_header(&rlc_dec, data, cs); |
| 1508 | if (rc < 0) { |
| 1509 | LOGP(DRLCMACUL, LOGL_ERROR, |
| 1510 | "Got %s RLC block but header parsing has failed\n", |
| 1511 | cs.name()); |
| 1512 | bts()->decode_error(); |
| 1513 | return rc; |
| 1514 | } |
| 1515 | |
| 1516 | LOGP(DRLCMACUL, LOGL_INFO, |
| 1517 | "Got %s RLC block: " |
| 1518 | "R=%d, SI=%d, TFI=%d, CPS=%d, RSB=%d, " |
| 1519 | "rc=%d\n", |
| 1520 | cs.name(), |
| 1521 | rlc_dec.r, rlc_dec.si, rlc_dec.tfi, rlc_dec.cps, rlc_dec.rsb, |
| 1522 | rc); |
| 1523 | |
| 1524 | /* find TBF inst from given TFI */ |
| 1525 | tbf = ul_tbf_by_tfi(rlc_dec.tfi); |
| 1526 | if (!tbf) { |
| 1527 | LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA unknown TFI=%d\n", |
| 1528 | rlc_dec.tfi); |
| 1529 | return 0; |
| 1530 | } |
| 1531 | |
Jacob Erlbeck | fc1b3e6 | 2016-01-11 09:58:11 +0100 | [diff] [blame] | 1532 | return tbf->rcv_data_block_acknowledged(&rlc_dec, data, meas); |
Jacob Erlbeck | 690a734 | 2015-11-30 18:09:17 +0100 | [diff] [blame] | 1533 | } |
| 1534 | |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1535 | int gprs_rlcmac_pdch::rcv_block_gprs(uint8_t *data, uint32_t fn, |
| 1536 | struct pcu_l1_meas *meas, GprsCodingScheme cs) |
| 1537 | { |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1538 | unsigned payload = data[0] >> 6; |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1539 | bitvec *block; |
| 1540 | int rc = 0; |
Jacob Erlbeck | 9e862e1 | 2015-12-14 15:19:12 +0100 | [diff] [blame] | 1541 | unsigned len = cs.maxBytesUL(); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1542 | |
| 1543 | switch (payload) { |
| 1544 | case GPRS_RLCMAC_DATA_BLOCK: |
Jacob Erlbeck | 554a835 | 2015-12-09 17:39:56 +0100 | [diff] [blame] | 1545 | rc = rcv_data_block(data, fn, meas, cs); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1546 | break; |
| 1547 | case GPRS_RLCMAC_CONTROL_BLOCK: |
| 1548 | block = bitvec_alloc(len); |
| 1549 | if (!block) |
| 1550 | return -ENOMEM; |
| 1551 | bitvec_unpack(block, data); |
Holger Hans Peter Freyther | 05f8efc | 2013-10-26 18:53:16 +0200 | [diff] [blame] | 1552 | rc = rcv_control_block(block, fn); |
Holger Hans Peter Freyther | 6f9f434 | 2013-10-26 16:54:10 +0200 | [diff] [blame] | 1553 | bitvec_free(block); |
| 1554 | break; |
| 1555 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
| 1556 | LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
| 1557 | break; |
| 1558 | default: |
| 1559 | LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload(%u).\n", payload); |
| 1560 | rc = -EINVAL; |
| 1561 | } |
| 1562 | |
| 1563 | return rc; |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 1564 | } |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1565 | |
Max | d71e8b3 | 2016-09-19 16:17:06 +0200 | [diff] [blame] | 1566 | void bts_update_tbf_ta(const char *p, uint32_t fn, uint8_t trx_no, uint8_t ts, |
| 1567 | uint8_t ta) |
| 1568 | { |
| 1569 | struct gprs_rlcmac_ul_tbf *tbf = |
| 1570 | bts_main_data()->bts->ul_tbf_by_poll_fn(fn, trx_no, ts); |
| 1571 | if (!tbf) |
| 1572 | LOGP(DL1IF, LOGL_DEBUG, "[%s] update TA = %u ignored due to " |
| 1573 | "unknown UL TBF on TRX = %d, TS = %d, FN = %d\n", |
| 1574 | p, ta, trx_no, ts, fn); |
| 1575 | else if (tbf->ta() != ta) { |
| 1576 | LOGP(DL1IF, LOGL_INFO, "[%s] Updating TA %u -> %u on " |
| 1577 | "TRX = %d, TS = %d, FN = %d\n", |
| 1578 | p, tbf->ta(), ta, trx_no, ts, fn); |
| 1579 | tbf->set_ta(ta); |
| 1580 | } |
| 1581 | } |
| 1582 | |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 1583 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_from_list_by_tfi( |
| 1584 | LListHead<gprs_rlcmac_tbf> *tbf_list, uint8_t tfi, |
Daniel Willmann | 2207c5e | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1585 | enum gprs_rlcmac_tbf_direction dir) |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1586 | { |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1587 | gprs_rlcmac_tbf *tbf; |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 1588 | LListHead<gprs_rlcmac_tbf> *pos; |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1589 | |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 1590 | llist_for_each(pos, tbf_list) { |
| 1591 | tbf = pos->entry(); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1592 | if (tbf->tfi() != tfi) |
| 1593 | continue; |
| 1594 | if (!tbf->pdch[ts_no]) |
| 1595 | continue; |
| 1596 | return tbf; |
| 1597 | } |
| 1598 | return NULL; |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1599 | } |
| 1600 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1601 | 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] | 1602 | { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1603 | return as_ul_tbf(tbf_by_tfi(tfi, GPRS_RLCMAC_UL_TBF)); |
Daniel Willmann | 17a1d5e | 2014-05-30 20:21:30 +0200 | [diff] [blame] | 1604 | } |
| 1605 | |
Daniel Willmann | fe6e2e4 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 1606 | 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] | 1607 | { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1608 | return as_dl_tbf(tbf_by_tfi(tfi, GPRS_RLCMAC_DL_TBF)); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1609 | } |
| 1610 | |
| 1611 | /* lookup TBF Entity (by TFI) */ |
| 1612 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_by_tfi(uint8_t tfi, |
| 1613 | enum gprs_rlcmac_tbf_direction dir) |
| 1614 | { |
| 1615 | struct gprs_rlcmac_tbf *tbf; |
| 1616 | |
| 1617 | if (tfi >= 32) |
| 1618 | return NULL; |
| 1619 | |
| 1620 | tbf = m_tbfs[dir][tfi]; |
| 1621 | |
| 1622 | if (!tbf) |
| 1623 | return NULL; |
| 1624 | |
| 1625 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING)) { |
| 1626 | return tbf; |
| 1627 | } |
| 1628 | |
| 1629 | return NULL; |
Daniel Willmann | 1e0c610 | 2014-06-04 14:56:09 +0200 | [diff] [blame] | 1630 | } |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1631 | |
| 1632 | void gprs_rlcmac_pdch::attach_tbf(gprs_rlcmac_tbf *tbf) |
| 1633 | { |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1634 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 1635 | |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1636 | if (m_tbfs[tbf->direction][tbf->tfi()]) |
| 1637 | LOGP(DRLCMAC, LOGL_ERROR, "PDCH(TS %d, TRX %d): " |
| 1638 | "%s has not been detached, overwriting it\n", |
| 1639 | ts_no, trx_no(), |
| 1640 | m_tbfs[tbf->direction][tbf->tfi()]->name()); |
| 1641 | |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1642 | m_num_tbfs[tbf->direction] += 1; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1643 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1644 | ul_tbf = as_ul_tbf(tbf); |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1645 | m_assigned_usf |= 1 << ul_tbf->m_usf[ts_no]; |
| 1646 | } |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1647 | m_assigned_tfi[tbf->direction] |= 1UL << tbf->tfi(); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1648 | m_tbfs[tbf->direction][tbf->tfi()] = tbf; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1649 | |
| 1650 | LOGP(DRLCMAC, LOGL_INFO, "PDCH(TS %d, TRX %d): Attaching %s, %d TBFs, " |
| 1651 | "USFs = %02x, TFIs = %08x.\n", |
| 1652 | ts_no, trx_no(), tbf->name(), m_num_tbfs[tbf->direction], |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1653 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1654 | } |
| 1655 | |
| 1656 | void gprs_rlcmac_pdch::detach_tbf(gprs_rlcmac_tbf *tbf) |
| 1657 | { |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1658 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 1659 | |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1660 | OSMO_ASSERT(m_num_tbfs[tbf->direction] > 0); |
| 1661 | |
| 1662 | m_num_tbfs[tbf->direction] -= 1; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1663 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Jacob Erlbeck | aa9daa1 | 2015-12-28 18:49:12 +0100 | [diff] [blame] | 1664 | ul_tbf = as_ul_tbf(tbf); |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1665 | m_assigned_usf &= ~(1 << ul_tbf->m_usf[ts_no]); |
| 1666 | } |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1667 | m_assigned_tfi[tbf->direction] &= ~(1UL << tbf->tfi()); |
Jacob Erlbeck | 3a10dbd | 2015-07-10 19:52:37 +0200 | [diff] [blame] | 1668 | m_tbfs[tbf->direction][tbf->tfi()] = NULL; |
Jacob Erlbeck | cc9358f | 2015-06-30 14:10:13 +0200 | [diff] [blame] | 1669 | |
| 1670 | LOGP(DRLCMAC, LOGL_INFO, "PDCH(TS %d, TRX %d): Detaching %s, %d TBFs, " |
| 1671 | "USFs = %02x, TFIs = %08x.\n", |
| 1672 | ts_no, trx_no(), tbf->name(), m_num_tbfs[tbf->direction], |
Jacob Erlbeck | 47a57f6 | 2015-07-08 12:53:16 +0200 | [diff] [blame] | 1673 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
Jacob Erlbeck | ccc34e4 | 2015-06-29 13:45:05 +0200 | [diff] [blame] | 1674 | } |
Jacob Erlbeck | 23f93a1 | 2015-06-30 08:52:54 +0200 | [diff] [blame] | 1675 | |
| 1676 | void gprs_rlcmac_pdch::reserve(enum gprs_rlcmac_tbf_direction dir) |
| 1677 | { |
| 1678 | m_num_reserved[dir] += 1; |
| 1679 | } |
| 1680 | |
| 1681 | void gprs_rlcmac_pdch::unreserve(enum gprs_rlcmac_tbf_direction dir) |
| 1682 | { |
| 1683 | OSMO_ASSERT(m_num_reserved[dir] > 0); |
| 1684 | m_num_reserved[dir] -= 1; |
| 1685 | } |
| 1686 | |
| 1687 | void gprs_rlcmac_trx::reserve_slots(enum gprs_rlcmac_tbf_direction dir, |
| 1688 | uint8_t slots) |
| 1689 | { |
| 1690 | unsigned i; |
| 1691 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 1692 | if (slots & (1 << i)) |
| 1693 | pdch[i].reserve(dir); |
| 1694 | } |
| 1695 | |
| 1696 | void gprs_rlcmac_trx::unreserve_slots(enum gprs_rlcmac_tbf_direction dir, |
| 1697 | uint8_t slots) |
| 1698 | { |
| 1699 | unsigned i; |
| 1700 | for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| 1701 | if (slots & (1 << i)) |
| 1702 | pdch[i].unreserve(dir); |
| 1703 | } |