Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 3 | * Copyright (C) 2018 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| 4 | * |
| 5 | * All Rights Reserved |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Affero General Public License as published by |
| 9 | * the Free Software Foundation; either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Affero General Public License |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <bts.h> |
| 23 | #include <pdch.h> |
| 24 | #include <decoding.h> |
| 25 | #include <encoding.h> |
| 26 | #include <gprs_rlcmac.h> |
| 27 | #include <gprs_debug.h> |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 28 | #include <coding_scheme.h> |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 29 | #include <gprs_ms.h> |
| 30 | #include <gprs_ms_storage.h> |
| 31 | #include <pcu_l1_if.h> |
| 32 | #include <rlc.h> |
| 33 | #include <sba.h> |
| 34 | #include <tbf.h> |
Pau Espin Pedrol | 9d1cdb1 | 2019-09-25 17:47:02 +0200 | [diff] [blame] | 35 | #include <tbf_ul.h> |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 36 | #include <cxx_linuxlist.h> |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 37 | |
| 38 | extern "C" { |
Pau Espin Pedrol | 980ef1e | 2020-03-26 15:06:11 +0100 | [diff] [blame] | 39 | #include <osmocom/core/talloc.h> |
| 40 | #include <osmocom/core/msgb.h> |
Vadim Yanitskiy | d71c566 | 2020-03-26 15:45:21 +0700 | [diff] [blame] | 41 | #include <osmocom/gsm/gsm48.h> |
Pau Espin Pedrol | 980ef1e | 2020-03-26 15:06:11 +0100 | [diff] [blame] | 42 | #include <osmocom/gsm/protocol/gsm_04_08.h> |
| 43 | #include <osmocom/core/bitvec.h> |
| 44 | #include <osmocom/core/gsmtap.h> |
| 45 | #include <osmocom/core/logging.h> |
| 46 | #include <osmocom/core/utils.h> |
Pau Espin Pedrol | b2653fe | 2020-03-26 15:14:01 +0100 | [diff] [blame] | 47 | |
Pau Espin Pedrol | 980ef1e | 2020-03-26 15:06:11 +0100 | [diff] [blame] | 48 | #include "coding_scheme.h" |
Pau Espin Pedrol | b2653fe | 2020-03-26 15:14:01 +0100 | [diff] [blame] | 49 | #include "gsm_rlcmac.h" |
Pau Espin Pedrol | 952cb3d | 2021-02-01 14:52:48 +0100 | [diff] [blame] | 50 | #include "nacc_fsm.h" |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | #include <errno.h> |
Vadim Yanitskiy | bd0dac3 | 2019-10-05 21:57:14 +0700 | [diff] [blame] | 54 | #include <stdlib.h> |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 55 | #include <arpa/inet.h> |
| 56 | |
| 57 | extern void *tall_pcu_ctx; |
| 58 | |
| 59 | static void get_rx_qual_meas(struct pcu_l1_meas *meas, uint8_t rx_qual_enc) |
| 60 | { |
| 61 | static const int16_t rx_qual_map[] = { |
| 62 | 0, /* 0,14 % */ |
| 63 | 0, /* 0,28 % */ |
| 64 | 1, /* 0,57 % */ |
| 65 | 1, /* 1,13 % */ |
| 66 | 2, /* 2,26 % */ |
| 67 | 5, /* 4,53 % */ |
| 68 | 9, /* 9,05 % */ |
| 69 | 18, /* 18,10 % */ |
| 70 | }; |
| 71 | |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 72 | pcu_l1_meas_set_ms_rx_qual(meas, rx_qual_map[ |
| 73 | OSMO_MIN(rx_qual_enc, ARRAY_SIZE(rx_qual_map)-1) |
| 74 | ]); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | static void get_meas(struct pcu_l1_meas *meas, |
| 78 | const Packet_Resource_Request_t *qr) |
| 79 | { |
| 80 | unsigned i; |
| 81 | |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 82 | pcu_l1_meas_set_ms_c_value(meas, qr->C_VALUE); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 83 | if (qr->Exist_SIGN_VAR) |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 84 | pcu_l1_meas_set_ms_sign_var(meas, (qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 85 | |
Pau Espin Pedrol | 0daf913 | 2020-02-23 16:11:28 +0700 | [diff] [blame] | 86 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->I_LEVEL_TN), ARRAY_SIZE(meas->ts)); i++) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 87 | { |
Pau Espin Pedrol | 0daf913 | 2020-02-23 16:11:28 +0700 | [diff] [blame] | 88 | if (qr->I_LEVEL_TN[i].Exist) { |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 89 | LOGP(DRLCMAC, LOGL_INFO, |
| 90 | "Packet resource request: i_level[%d] = %d\n", |
Pau Espin Pedrol | 0daf913 | 2020-02-23 16:11:28 +0700 | [diff] [blame] | 91 | i, qr->I_LEVEL_TN[i].I_LEVEL); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 92 | pcu_l1_meas_set_ms_i_level(meas, i, -2 * qr->I_LEVEL_TN[i].I_LEVEL); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 93 | } |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | static void get_meas(struct pcu_l1_meas *meas, |
| 98 | const Channel_Quality_Report_t *qr) |
| 99 | { |
| 100 | unsigned i; |
| 101 | |
| 102 | get_rx_qual_meas(meas, qr->RXQUAL); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 103 | pcu_l1_meas_set_ms_c_value(meas, qr->C_VALUE); |
| 104 | pcu_l1_meas_set_ms_sign_var(meas, (qr->SIGN_VAR + 2) / 4); /* SIGN_VAR * 0.25 dB */ |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 105 | |
| 106 | for (i = 0; i < OSMO_MIN(ARRAY_SIZE(qr->Slot), ARRAY_SIZE(meas->ts)); i++) |
| 107 | { |
| 108 | if (qr->Slot[i].Exist) { |
| 109 | LOGP(DRLCMAC, LOGL_DEBUG, |
| 110 | "Channel quality report: i_level[%d] = %d\n", |
| 111 | i, qr->Slot[i].I_LEVEL_TN); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 112 | pcu_l1_meas_set_ms_i_level(meas, i, -2 * qr->Slot[i].I_LEVEL_TN); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 117 | static inline void sched_ul_ass_or_rej(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_dl_tbf *tbf) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 118 | { |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 119 | bts_do_rate_ctr_inc(bts, CTR_CHANNEL_REQUEST_DESCRIPTION); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 120 | |
| 121 | /* This call will register the new TBF with the MS on success */ |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 122 | gprs_rlcmac_ul_tbf *ul_tbf = tbf_alloc_ul(bts, tbf->ms(), tbf->trx->trx_no, tbf->tlli()); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 123 | |
| 124 | /* schedule uplink assignment or reject */ |
| 125 | if (ul_tbf) { |
| 126 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack message, so we provide one:\n"); |
| 127 | TBF_SET_ASS_STATE_UL(tbf, GPRS_RLCMAC_UL_ASS_SEND_ASS); |
| 128 | } else { |
| 129 | LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack message, so we packet access reject:\n"); |
| 130 | TBF_SET_ASS_STATE_UL(tbf, GPRS_RLCMAC_UL_ASS_SEND_ASS_REJ); |
| 131 | } |
| 132 | } |
| 133 | |
Pau Espin Pedrol | 702ebee | 2021-03-08 14:15:54 +0100 | [diff] [blame] | 134 | void pdch_init(struct gprs_rlcmac_pdch *pdch, struct gprs_rlcmac_trx *trx, uint8_t ts_nr) |
| 135 | { |
| 136 | pdch->ts_no = ts_nr; |
| 137 | pdch->trx = trx; |
| 138 | |
| 139 | /* Initialize the PTCCH/D message (Packet Timing Advance Control Channel) */ |
| 140 | memset(pdch->ptcch_msg, PTCCH_TAI_FREE, PTCCH_TAI_NUM); |
| 141 | memset(pdch->ptcch_msg + PTCCH_TAI_NUM, PTCCH_PADDING, 7); |
| 142 | } |
| 143 | |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 144 | void gprs_rlcmac_pdch::enable() |
| 145 | { |
| 146 | /* TODO: Check if there are still allocated resources.. */ |
| 147 | INIT_LLIST_HEAD(&paging_list); |
| 148 | m_is_enabled = 1; |
| 149 | } |
| 150 | |
| 151 | void gprs_rlcmac_pdch::disable() |
| 152 | { |
| 153 | /* TODO.. kick free_resources once we know the TRX/TS we are on */ |
| 154 | m_is_enabled = 0; |
| 155 | } |
| 156 | |
| 157 | void gprs_rlcmac_pdch::free_resources() |
| 158 | { |
| 159 | struct gprs_rlcmac_paging *pag; |
| 160 | |
| 161 | /* we are not enabled. there should be no resources */ |
| 162 | if (!is_enabled()) |
| 163 | return; |
| 164 | |
| 165 | /* kick all TBF on slot */ |
Pau Espin Pedrol | 906aafc | 2021-01-18 17:53:29 +0100 | [diff] [blame] | 166 | pdch_free_all_tbf(this); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 167 | |
| 168 | /* flush all pending paging messages */ |
| 169 | while ((pag = dequeue_paging())) |
| 170 | talloc_free(pag); |
| 171 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 172 | bts_sba(trx->bts)->free_resources(this); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | struct gprs_rlcmac_paging *gprs_rlcmac_pdch::dequeue_paging() |
| 176 | { |
| 177 | struct gprs_rlcmac_paging *pag; |
| 178 | |
| 179 | if (llist_empty(&paging_list)) |
| 180 | return NULL; |
| 181 | pag = llist_entry(paging_list.next, struct gprs_rlcmac_paging, list); |
| 182 | llist_del(&pag->list); |
| 183 | |
| 184 | return pag; |
| 185 | } |
| 186 | |
| 187 | struct msgb *gprs_rlcmac_pdch::packet_paging_request() |
| 188 | { |
| 189 | struct gprs_rlcmac_paging *pag; |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 190 | RlcMacDownlink_t *mac_control_block; |
| 191 | bitvec *pag_vec; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 192 | struct msgb *msg; |
| 193 | unsigned wp = 0, len; |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 194 | int rc; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 195 | |
| 196 | /* no paging, no message */ |
| 197 | pag = dequeue_paging(); |
| 198 | if (!pag) |
| 199 | return NULL; |
| 200 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 201 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, "Scheduling paging\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 202 | |
| 203 | /* alloc message */ |
| 204 | msg = msgb_alloc(23, "pag ctrl block"); |
| 205 | if (!msg) { |
| 206 | talloc_free(pag); |
| 207 | return NULL; |
| 208 | } |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 209 | pag_vec = bitvec_alloc(23, tall_pcu_ctx); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 210 | if (!pag_vec) { |
| 211 | msgb_free(msg); |
| 212 | talloc_free(pag); |
| 213 | return NULL; |
| 214 | } |
| 215 | wp = Encoding::write_packet_paging_request(pag_vec); |
| 216 | |
| 217 | /* loop until message is full */ |
| 218 | while (pag) { |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 219 | if (log_check_level(DRLCMAC, LOGL_DEBUG)) { |
| 220 | struct osmo_mobile_identity omi = {}; |
| 221 | char str[64]; |
| 222 | osmo_mobile_identity_decode(&omi, pag->identity_lv + 1, pag->identity_lv[0], true); |
| 223 | osmo_mobile_identity_to_str_buf(str, sizeof(str), &omi); |
| 224 | LOGP(DRLCMAC, LOGL_DEBUG, "Paging MI - %s\n", str); |
| 225 | } |
Vadim Yanitskiy | d71c566 | 2020-03-26 15:45:21 +0700 | [diff] [blame] | 226 | |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 227 | /* try to add paging */ |
Vadim Yanitskiy | ce16014 | 2020-03-26 16:18:17 +0700 | [diff] [blame] | 228 | if ((pag->identity_lv[1] & GSM_MI_TYPE_MASK) == GSM_MI_TYPE_TMSI) { |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 229 | /* TMSI */ |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 230 | len = 1 + 1 + 1 + 32 + 2 + 1; |
| 231 | if (pag->identity_lv[0] != 5) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 232 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, |
| 233 | "TMSI paging with MI != 5 octets!\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 234 | goto continue_next; |
| 235 | } |
| 236 | } else { |
| 237 | /* MI */ |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 238 | len = 1 + 1 + 1 + 4 + (pag->identity_lv[0]<<3) + 2 + 1; |
| 239 | if (pag->identity_lv[0] > 8) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 240 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, |
| 241 | "Paging with MI > 8 octets!\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 242 | goto continue_next; |
| 243 | } |
| 244 | } |
| 245 | if (wp + len > 184) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 246 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, |
| 247 | "- Does not fit, so schedule next time\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 248 | /* put back paging record, because does not fit */ |
Pau Espin Pedrol | 7d3ee9e | 2020-11-23 16:04:02 +0100 | [diff] [blame] | 249 | llist_add(&pag->list, &paging_list); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 250 | break; |
| 251 | } |
| 252 | Encoding::write_repeated_page_info(pag_vec, wp, pag->identity_lv[0], |
| 253 | pag->identity_lv + 1, pag->chan_needed); |
| 254 | |
| 255 | continue_next: |
| 256 | talloc_free(pag); |
| 257 | pag = dequeue_paging(); |
| 258 | } |
| 259 | |
| 260 | bitvec_pack(pag_vec, msgb_put(msg, 23)); |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 261 | mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 262 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Paging Request +++++++++++++++++++++++++\n"); |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 263 | rc = decode_gsm_rlcmac_downlink(pag_vec, mac_control_block); |
| 264 | if (rc < 0) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 265 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, "Decoding of Downlink Packet Paging Request failed (%d): %s\n", |
Pau Espin Pedrol | 9c4f9ff | 2020-11-23 16:36:42 +0100 | [diff] [blame] | 266 | rc, osmo_hexdump(msgb_data(msg), msgb_length(msg))); |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 267 | goto free_ret; |
| 268 | } |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 269 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Paging Request -------------------------\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 270 | bitvec_free(pag_vec); |
| 271 | talloc_free(mac_control_block); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 272 | return msg; |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 273 | |
| 274 | free_ret: |
| 275 | bitvec_free(pag_vec); |
| 276 | talloc_free(mac_control_block); |
| 277 | msgb_free(msg); |
| 278 | return NULL; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 279 | } |
| 280 | |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 281 | bool gprs_rlcmac_pdch::add_paging(uint8_t chan_needed, const struct osmo_mobile_identity *mi) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 282 | { |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 283 | int rc; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 284 | struct gprs_rlcmac_paging *pag = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_paging); |
| 285 | if (!pag) |
| 286 | return false; |
| 287 | |
| 288 | pag->chan_needed = chan_needed; |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 289 | rc = osmo_mobile_identity_encode_buf(pag->identity_lv + 1, sizeof(pag->identity_lv) - 1, mi, true); |
| 290 | if (rc <= 0) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 291 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, "Cannot encode Mobile Identity (rc=%d)\n", rc); |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 292 | talloc_free(pag); |
| 293 | return false; |
| 294 | } |
| 295 | pag->identity_lv[0] = rc; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 296 | |
| 297 | llist_add(&pag->list, &paging_list); |
| 298 | |
| 299 | return true; |
| 300 | } |
| 301 | |
| 302 | void gprs_rlcmac_pdch::rcv_control_ack(Packet_Control_Acknowledgement_t *packet, uint32_t fn) |
| 303 | { |
| 304 | struct gprs_rlcmac_tbf *tbf, *new_tbf; |
| 305 | uint32_t tlli = packet->TLLI; |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 306 | GprsMs *ms = bts_ms_by_tlli(bts(), tlli, GSM_RESERVED_TMSI); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 307 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 308 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 309 | tbf = bts_ul_tbf_by_poll_fn(bts(), fn, trx_no(), ts_no); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 310 | if (!tbf) |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 311 | tbf = bts_dl_tbf_by_poll_fn(bts(), fn, trx_no(), ts_no); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 312 | |
| 313 | if (!tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 314 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK with " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 315 | "unknown FN=%u TLLI=0x%08x (TRX %d TS %d)\n", |
| 316 | fn, tlli, trx_no(), ts_no); |
| 317 | if (ms) |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 318 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK with " |
| 319 | "unknown TBF corresponds to MS with IMSI %s, TA %d, " |
| 320 | "uTBF (TFI=%d, state=%s), dTBF (TFI=%d, state=%s)\n", |
| 321 | ms_imsi(ms), ms_ta(ms), |
| 322 | ms_ul_tbf(ms) ? ms_ul_tbf(ms)->tfi() : 0, |
| 323 | ms_ul_tbf(ms) ? ms_ul_tbf(ms)->state_name() : "None", |
| 324 | ms_dl_tbf(ms) ? ms_dl_tbf(ms)->tfi() : 0, |
| 325 | ms_dl_tbf(ms) ? ms_dl_tbf(ms)->state_name() : "None"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 326 | return; |
| 327 | } |
| 328 | |
| 329 | /* Reset N3101 counter: */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 330 | tbf->n_reset(N3101); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 331 | |
| 332 | tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); |
| 333 | |
| 334 | LOGPTBF(tbf, LOGL_DEBUG, "RX: [PCU <- BTS] Packet Control Ack\n"); |
| 335 | TBF_POLL_SCHED_UNSET(tbf); |
| 336 | |
| 337 | /* check if this control ack belongs to packet uplink ack */ |
| 338 | ul_tbf = as_ul_tbf(tbf); |
| 339 | if (ul_tbf && ul_tbf->handle_ctrl_ack()) { |
| 340 | LOGPTBF(tbf, LOGL_DEBUG, "[UPLINK] END\n"); |
| 341 | if (ul_tbf->ctrl_ack_to_toggle()) |
| 342 | LOGPTBF(tbf, LOGL_NOTICE, "Recovered uplink ack for UL\n"); |
| 343 | |
| 344 | tbf_free(tbf); |
| 345 | return; |
| 346 | } |
| 347 | if (tbf->dl_ass_state_is(GPRS_RLCMAC_DL_ASS_WAIT_ACK)) { |
| 348 | LOGPTBF(tbf, LOGL_DEBUG, "[UPLINK] DOWNLINK ASSIGNED\n"); |
| 349 | /* reset N3105 */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 350 | tbf->n_reset(N3105); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 351 | TBF_SET_ASS_STATE_DL(tbf, GPRS_RLCMAC_DL_ASS_NONE); |
| 352 | |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 353 | new_tbf = tbf->ms() ? ms_dl_tbf(tbf->ms()) : NULL; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 354 | if (!new_tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 355 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, "Got ACK, but DL " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 356 | "TBF is gone TLLI=0x%08x\n", tlli); |
| 357 | return; |
| 358 | } |
| 359 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE) && |
| 360 | tbf->direction == new_tbf->direction) |
| 361 | tbf_free(tbf); |
| 362 | |
| 363 | if (new_tbf->check_n_clear(GPRS_RLCMAC_FLAG_CCCH)) { |
| 364 | /* We now know that the PACCH really existed */ |
| 365 | LOGPTBF(new_tbf, LOGL_INFO, |
| 366 | "The TBF has been confirmed on the PACCH, " |
| 367 | "changed type from CCCH to PACCH\n"); |
| 368 | TBF_ASS_TYPE_SET(new_tbf, GPRS_RLCMAC_FLAG_PACCH); |
| 369 | } |
| 370 | TBF_SET_STATE(new_tbf, GPRS_RLCMAC_FLOW); |
| 371 | /* stop pending assignment timer */ |
| 372 | new_tbf->t_stop(T0, "control acked (DL-TBF)"); |
| 373 | if (new_tbf->check_n_clear(GPRS_RLCMAC_FLAG_TO_DL_ASS)) |
| 374 | LOGPTBF(new_tbf, LOGL_NOTICE, "Recovered downlink assignment\n"); |
| 375 | |
| 376 | tbf_assign_control_ts(new_tbf); |
| 377 | return; |
| 378 | } |
| 379 | if (tbf->ul_ass_state_is(GPRS_RLCMAC_UL_ASS_WAIT_ACK)) { |
| 380 | LOGPTBF(tbf, LOGL_DEBUG, "[DOWNLINK] UPLINK ASSIGNED\n"); |
| 381 | /* reset N3105 */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 382 | tbf->n_reset(N3105); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 383 | TBF_SET_ASS_STATE_UL(tbf, GPRS_RLCMAC_UL_ASS_NONE); |
| 384 | |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 385 | new_tbf = tbf->ms() ? ms_ul_tbf(tbf->ms()) : NULL; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 386 | if (!new_tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 387 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, "Got ACK, but UL " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 388 | "TBF is gone TLLI=0x%08x\n", tlli); |
| 389 | return; |
| 390 | } |
| 391 | if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE) && |
| 392 | tbf->direction == new_tbf->direction) |
| 393 | tbf_free(tbf); |
| 394 | |
| 395 | TBF_SET_STATE(new_tbf, GPRS_RLCMAC_FLOW); |
| 396 | if (new_tbf->check_n_clear(GPRS_RLCMAC_FLAG_TO_UL_ASS)) |
| 397 | LOGPTBF(new_tbf, LOGL_NOTICE, "Recovered uplink assignment for UL\n"); |
| 398 | |
| 399 | tbf_assign_control_ts(new_tbf); |
| 400 | /* there might be LLC packets waiting in the queue, but the DL |
| 401 | * TBF might have been released while the UL TBF has been |
| 402 | * established */ |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 403 | if (ms_need_dl_tbf(new_tbf->ms())) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 404 | new_tbf->establish_dl_tbf_on_pacch(); |
| 405 | |
| 406 | return; |
| 407 | } |
Pau Espin Pedrol | 952cb3d | 2021-02-01 14:52:48 +0100 | [diff] [blame] | 408 | if (ms->nacc && ms->nacc->fi->state == NACC_ST_WAIT_CELL_CHG_CONTINUE_ACK && |
| 409 | ms->nacc->continue_poll_fn == fn && ms->nacc->continue_poll_ts == ts_no) { |
| 410 | osmo_fsm_inst_dispatch(ms->nacc->fi, NACC_EV_RX_CELL_CHG_CONTINUE_ACK, NULL); |
| 411 | /* Don't assume MS is no longer reachable (hence don't free) after this: TS 44.060 |
| 412 | * "When the mobile station receives the PACKET CELL CHANGE ORDER |
| 413 | * or the PACKET CELL CHANGE CONTINUE message the mobile station |
| 414 | * shall transmit a PACKET CONTROL ACKNOWLEDGMENT message in the |
| 415 | * specified uplink radio block if a valid RRBP field is |
| 416 | * received as part of the message; the mobile station _MAY_ then |
| 417 | * switch to a new cell." |
| 418 | */ |
| 419 | return; |
| 420 | } |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 421 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, |
| 422 | "Error: received PACET CONTROL ACK at no request\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 423 | } |
| 424 | |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 425 | void gprs_rlcmac_pdch::rcv_control_dl_ack_nack(Packet_Downlink_Ack_Nack_t *ack_nack, uint32_t fn, struct pcu_l1_meas *meas) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 426 | { |
| 427 | int8_t tfi = 0; /* must be signed */ |
| 428 | struct gprs_rlcmac_dl_tbf *tbf; |
| 429 | int rc; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 430 | int num_blocks; |
| 431 | uint8_t bits_data[RLC_GPRS_WS/8]; |
| 432 | bitvec bits; |
| 433 | int bsn_begin, bsn_end; |
| 434 | char show_bits[RLC_GPRS_WS + 1]; |
| 435 | |
| 436 | tfi = ack_nack->DOWNLINK_TFI; |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 437 | tbf = bts_dl_tbf_by_poll_fn(bts(), fn, trx_no(), ts_no); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 438 | if (!tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 439 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 440 | "unknown FN=%u TFI=%d (TRX %d TS %d)\n", |
| 441 | fn, tfi, trx_no(), ts_no); |
| 442 | return; |
| 443 | } |
| 444 | if (tbf->tfi() != tfi) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 445 | LOGPTBFDL(tbf, LOGL_NOTICE, |
| 446 | "PACKET DOWNLINK ACK with wrong TFI=%d, ignoring!\n", tfi); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 447 | return; |
| 448 | } |
| 449 | |
| 450 | /* Reset N3101 counter: */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 451 | tbf->n_reset(N3101); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 452 | |
| 453 | if (tbf->handle_ack_nack()) |
| 454 | LOGPTBF(tbf, LOGL_NOTICE, "Recovered downlink ack\n"); |
| 455 | |
| 456 | LOGPTBF(tbf, LOGL_DEBUG, "RX: [PCU <- BTS] Packet Downlink Ack/Nack\n"); |
| 457 | |
| 458 | bits.data = bits_data; |
| 459 | bits.data_len = sizeof(bits_data); |
| 460 | bits.cur_bit = 0; |
| 461 | |
| 462 | num_blocks = Decoding::decode_gprs_acknack_bits( |
| 463 | &ack_nack->Ack_Nack_Description, &bits, |
Pau Espin Pedrol | b3f2397 | 2020-10-23 21:00:23 +0200 | [diff] [blame] | 464 | &bsn_begin, &bsn_end, static_cast<gprs_rlc_dl_window *>(tbf->window())); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 465 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 466 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 467 | "Got GPRS DL ACK bitmap: SSN: %d, BSN %d to %d - 1 (%d blocks), " |
| 468 | "\"%s\"\n", |
| 469 | ack_nack->Ack_Nack_Description.STARTING_SEQUENCE_NUMBER, |
| 470 | bsn_begin, bsn_end, num_blocks, |
| 471 | (Decoding::extract_rbb(&bits, show_bits), show_bits)); |
| 472 | |
| 473 | rc = tbf->rcvd_dl_ack( |
| 474 | ack_nack->Ack_Nack_Description.FINAL_ACK_INDICATION, |
| 475 | bsn_begin, &bits); |
| 476 | if (rc == 1) { |
| 477 | tbf_free(tbf); |
| 478 | return; |
| 479 | } |
| 480 | /* check for channel request */ |
| 481 | if (ack_nack->Exist_Channel_Request_Description) |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 482 | sched_ul_ass_or_rej(bts(), tbf); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 483 | |
| 484 | /* get measurements */ |
| 485 | if (tbf->ms()) { |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 486 | get_meas(meas, &ack_nack->Channel_Quality_Report); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 487 | ms_update_l1_meas(tbf->ms(), meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 488 | } |
| 489 | } |
| 490 | |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 491 | void gprs_rlcmac_pdch::rcv_control_egprs_dl_ack_nack(EGPRS_PD_AckNack_t *ack_nack, uint32_t fn, struct pcu_l1_meas *meas) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 492 | { |
| 493 | int8_t tfi = 0; /* must be signed */ |
| 494 | struct gprs_rlcmac_dl_tbf *tbf; |
Pau Espin Pedrol | b3f2397 | 2020-10-23 21:00:23 +0200 | [diff] [blame] | 495 | gprs_rlc_dl_window *window; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 496 | int rc; |
| 497 | int num_blocks; |
| 498 | uint8_t bits_data[RLC_EGPRS_MAX_WS/8]; |
| 499 | char show_bits[RLC_EGPRS_MAX_WS + 1]; |
| 500 | bitvec bits; |
| 501 | int bsn_begin, bsn_end; |
| 502 | |
| 503 | tfi = ack_nack->DOWNLINK_TFI; |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 504 | tbf = bts_dl_tbf_by_poll_fn(bts(), fn, trx_no(), ts_no); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 505 | if (!tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 506 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "EGPRS PACKET DOWNLINK ACK with " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 507 | "unknown FN=%u TFI=%d (TRX %d TS %d)\n", |
| 508 | fn, tfi, trx_no(), ts_no); |
| 509 | return; |
| 510 | } |
| 511 | if (tbf->tfi() != tfi) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 512 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "EGPRS PACKET DOWNLINK ACK with " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 513 | "wrong TFI=%d, ignoring!\n", tfi); |
| 514 | return; |
| 515 | } |
| 516 | |
| 517 | /* Reset N3101 counter: */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 518 | tbf->n_reset(N3101); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 519 | |
| 520 | if (tbf->handle_ack_nack()) |
| 521 | LOGPTBF(tbf, LOGL_NOTICE, "Recovered EGPRS downlink ack\n"); |
| 522 | |
| 523 | LOGPTBF(tbf, LOGL_DEBUG, |
| 524 | "RX: [PCU <- BTS] EGPRS Packet Downlink Ack/Nack\n"); |
| 525 | |
Pau Espin Pedrol | b3f2397 | 2020-10-23 21:00:23 +0200 | [diff] [blame] | 526 | window = static_cast<gprs_rlc_dl_window *>(tbf->window()); |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 527 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, "EGPRS ACK/NACK: " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 528 | "ut: %d, final: %d, bow: %d, eow: %d, ssn: %d, have_crbb: %d, " |
| 529 | "urbb_len:%d, %p, %p, %d, %d, win: %d-%d, urbb: %s\n", |
| 530 | (int)ack_nack->EGPRS_AckNack.UnionType, |
| 531 | (int)ack_nack->EGPRS_AckNack.Desc.FINAL_ACK_INDICATION, |
| 532 | (int)ack_nack->EGPRS_AckNack.Desc.BEGINNING_OF_WINDOW, |
| 533 | (int)ack_nack->EGPRS_AckNack.Desc.END_OF_WINDOW, |
| 534 | (int)ack_nack->EGPRS_AckNack.Desc.STARTING_SEQUENCE_NUMBER, |
| 535 | (int)ack_nack->EGPRS_AckNack.Desc.Exist_CRBB, |
| 536 | (int)ack_nack->EGPRS_AckNack.Desc.URBB_LENGTH, |
| 537 | (void *)&ack_nack->EGPRS_AckNack.UnionType, |
| 538 | (void *)&ack_nack->EGPRS_AckNack.Desc, |
| 539 | (int)offsetof(EGPRS_AckNack_t, Desc), |
| 540 | (int)offsetof(EGPRS_AckNack_w_len_t, Desc), |
Pau Espin Pedrol | b3f2397 | 2020-10-23 21:00:23 +0200 | [diff] [blame] | 541 | window->v_a(), |
| 542 | window->v_s(), |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 543 | osmo_hexdump((const uint8_t *)&ack_nack->EGPRS_AckNack.Desc.URBB, |
| 544 | sizeof(ack_nack->EGPRS_AckNack.Desc.URBB))); |
| 545 | |
| 546 | bits.data = bits_data; |
| 547 | bits.data_len = sizeof(bits_data); |
| 548 | bits.cur_bit = 0; |
| 549 | |
| 550 | num_blocks = Decoding::decode_egprs_acknack_bits( |
| 551 | &ack_nack->EGPRS_AckNack.Desc, &bits, |
Pau Espin Pedrol | b3f2397 | 2020-10-23 21:00:23 +0200 | [diff] [blame] | 552 | &bsn_begin, &bsn_end, window); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 553 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 554 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 555 | "Got EGPRS DL ACK bitmap: SSN: %d, BSN %d to %d - 1 (%d blocks), " |
| 556 | "\"%s\"\n", |
| 557 | ack_nack->EGPRS_AckNack.Desc.STARTING_SEQUENCE_NUMBER, |
| 558 | bsn_begin, bsn_end, num_blocks, |
| 559 | (Decoding::extract_rbb(&bits, show_bits), show_bits) |
| 560 | ); |
| 561 | |
| 562 | rc = tbf->rcvd_dl_ack( |
| 563 | ack_nack->EGPRS_AckNack.Desc.FINAL_ACK_INDICATION, |
| 564 | bsn_begin, &bits); |
| 565 | if (rc == 1) { |
| 566 | tbf_free(tbf); |
| 567 | return; |
| 568 | } |
| 569 | |
| 570 | /* check for channel request */ |
| 571 | if (ack_nack->Exist_ChannelRequestDescription) |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 572 | sched_ul_ass_or_rej(bts(), tbf); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 573 | |
| 574 | /* get measurements */ |
| 575 | if (tbf->ms()) { |
| 576 | /* TODO: Implement Measurements parsing for EGPRS */ |
| 577 | /* |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 578 | get_meas(meas, &ack_nack->Channel_Quality_Report); |
| 579 | tbf->ms()->update_l1_meas(meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 580 | */ |
| 581 | } |
| 582 | } |
| 583 | |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 584 | void gprs_rlcmac_pdch::rcv_resource_request(Packet_Resource_Request_t *request, uint32_t fn, struct pcu_l1_meas *meas) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 585 | { |
| 586 | struct gprs_rlcmac_sba *sba; |
| 587 | |
| 588 | if (request->ID.UnionType) { |
Pau Espin Pedrol | ce60011 | 2020-05-12 19:20:10 +0200 | [diff] [blame] | 589 | struct gprs_rlcmac_ul_tbf *ul_tbf; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 590 | uint32_t tlli = request->ID.u.TLLI; |
Pau Espin Pedrol | 9e7361a | 2020-07-08 17:35:12 +0200 | [diff] [blame] | 591 | bool ms_found = true; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 592 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 593 | GprsMs *ms = bts_ms_by_tlli(bts(), tlli, GSM_RESERVED_TMSI); |
Pau Espin Pedrol | ce60011 | 2020-05-12 19:20:10 +0200 | [diff] [blame] | 594 | if (!ms) { |
Pau Espin Pedrol | 9e7361a | 2020-07-08 17:35:12 +0200 | [diff] [blame] | 595 | ms_found = false; |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 596 | ms = bts_alloc_ms(bts(), 0, 0); /* ms class updated later */ |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 597 | ms_set_tlli(ms, tlli); |
Pau Espin Pedrol | ce60011 | 2020-05-12 19:20:10 +0200 | [diff] [blame] | 598 | } |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 599 | ul_tbf = ms_ul_tbf(ms); /* hence ul_tbf may be NULL */ |
Pau Espin Pedrol | 17402a5 | 2020-05-08 17:44:33 +0200 | [diff] [blame] | 600 | |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 601 | /* Keep the ms, even if it gets idle temporarily */ |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 602 | ms_ref(ms); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 603 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 604 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, "MS requests UL TBF " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 605 | "in packet resource request of single " |
| 606 | "block, so we provide one:\n"); |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 607 | sba = bts_sba(bts())->find(this, fn); |
Pau Espin Pedrol | 9e7361a | 2020-07-08 17:35:12 +0200 | [diff] [blame] | 608 | if (sba) { |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 609 | ms_set_ta(ms, sba->ta); |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 610 | bts_sba(bts())->free_sba(sba); |
Pau Espin Pedrol | 9e7361a | 2020-07-08 17:35:12 +0200 | [diff] [blame] | 611 | } else if (!ul_tbf || !ul_tbf->state_is(GPRS_RLCMAC_FINISHED)) { |
| 612 | LOGPTBFUL(ul_tbf, LOGL_NOTICE, |
| 613 | "MS requests UL TBF in PACKET RESOURCE REQ of " |
| 614 | "single block, but there is no resource request " |
| 615 | "scheduled!\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 616 | } |
Pau Espin Pedrol | 9e7361a | 2020-07-08 17:35:12 +0200 | [diff] [blame] | 617 | /* else: Resource Request can be received even if not scheduled |
| 618 | by the network since it's used by MS to re-establish a new UL |
| 619 | TBF when last one has finished. */ |
| 620 | |
Pau Espin Pedrol | e50ce6e | 2020-03-23 18:49:16 +0100 | [diff] [blame] | 621 | if (request->Exist_MS_Radio_Access_capability2) { |
Pau Espin Pedrol | 17402a5 | 2020-05-08 17:44:33 +0200 | [diff] [blame] | 622 | uint8_t ms_class, egprs_ms_class; |
Pau Espin Pedrol | 8a35e64 | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 623 | ms_class = get_ms_class_by_capability(&request->MS_Radio_Access_capability2); |
| 624 | egprs_ms_class = get_egprs_ms_class_by_capability(&request->MS_Radio_Access_capability2); |
Pau Espin Pedrol | bcb226d | 2020-07-08 17:18:22 +0200 | [diff] [blame] | 625 | if (ms_class) |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 626 | ms_set_ms_class(ms, ms_class); |
Pau Espin Pedrol | bcb226d | 2020-07-08 17:18:22 +0200 | [diff] [blame] | 627 | if (egprs_ms_class) |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 628 | ms_set_egprs_ms_class(ms, egprs_ms_class); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 629 | } |
Pau Espin Pedrol | 17402a5 | 2020-05-08 17:44:33 +0200 | [diff] [blame] | 630 | |
Pau Espin Pedrol | 9e7361a | 2020-07-08 17:35:12 +0200 | [diff] [blame] | 631 | /* Get rid of previous finished UL TBF before providing a new one */ |
| 632 | if (ms_found && ul_tbf) { |
| 633 | if (!ul_tbf->state_is(GPRS_RLCMAC_FINISHED)) |
| 634 | LOGPTBFUL(ul_tbf, LOGL_NOTICE, |
| 635 | "Got PACKET RESOURCE REQ while TBF not finished, killing pending UL TBF\n"); |
| 636 | tbf_free(ul_tbf); |
| 637 | } |
| 638 | |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 639 | ul_tbf = tbf_alloc_ul(bts(), ms, trx_no(), tlli); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 640 | if (!ul_tbf) { |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 641 | handle_tbf_reject(bts(), ms, tlli, |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 642 | trx_no(), ts_no); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 643 | goto return_unref; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 644 | } |
| 645 | |
| 646 | /* set control ts to current MS's TS, until assignment complete */ |
Pau Espin Pedrol | 506eb23 | 2019-12-24 13:02:48 +0100 | [diff] [blame] | 647 | LOGPTBF(ul_tbf, LOGL_DEBUG, "change control TS %d -> %d until assignment is complete.\n", |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 648 | ul_tbf->control_ts, ts_no); |
| 649 | |
| 650 | ul_tbf->control_ts = ts_no; |
| 651 | /* schedule uplink assignment */ |
| 652 | TBF_SET_ASS_STATE_UL(ul_tbf, GPRS_RLCMAC_UL_ASS_SEND_ASS); |
| 653 | |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 654 | /* get measurements */ |
| 655 | if (ul_tbf->ms()) { |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 656 | get_meas(meas, request); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 657 | ms_update_l1_meas(ul_tbf->ms(), meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 658 | } |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 659 | return_unref: |
| 660 | ms_unref(ms); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 661 | return; |
| 662 | } |
| 663 | |
| 664 | if (request->ID.u.Global_TFI.UnionType) { |
| 665 | struct gprs_rlcmac_dl_tbf *dl_tbf; |
| 666 | int8_t tfi = request->ID.u.Global_TFI.u.DOWNLINK_TFI; |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 667 | dl_tbf = bts_dl_tbf_by_tfi(bts(), tfi, trx_no(), ts_no); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 668 | if (!dl_tbf) { |
Thorsten Alteholz | 8bb7904 | 2018-10-06 10:42:58 +0200 | [diff] [blame] | 669 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESOURCE REQ unknown downlink TFI=%d\n", tfi); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 670 | return; |
| 671 | } |
| 672 | LOGPTBFDL(dl_tbf, LOGL_ERROR, |
| 673 | "RX: [PCU <- BTS] FIXME: Packet resource request\n"); |
| 674 | |
| 675 | /* Reset N3101 counter: */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 676 | dl_tbf->n_reset(N3101); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 677 | } else { |
| 678 | struct gprs_rlcmac_ul_tbf *ul_tbf; |
| 679 | int8_t tfi = request->ID.u.Global_TFI.u.UPLINK_TFI; |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 680 | ul_tbf = bts_ul_tbf_by_tfi(bts(), tfi, trx_no(), ts_no); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 681 | if (!ul_tbf) { |
Thorsten Alteholz | 8bb7904 | 2018-10-06 10:42:58 +0200 | [diff] [blame] | 682 | LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESOURCE REQ unknown uplink TFI=%d\n", tfi); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 683 | return; |
| 684 | } |
| 685 | LOGPTBFUL(ul_tbf, LOGL_ERROR, |
| 686 | "RX: [PCU <- BTS] FIXME: Packet resource request\n"); |
| 687 | |
| 688 | /* Reset N3101 counter: */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 689 | ul_tbf->n_reset(N3101); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 690 | } |
| 691 | } |
| 692 | |
| 693 | void gprs_rlcmac_pdch::rcv_measurement_report(Packet_Measurement_Report_t *report, uint32_t fn) |
| 694 | { |
Pau Espin Pedrol | b69928c | 2020-08-18 20:29:40 +0200 | [diff] [blame] | 695 | struct gprs_rlcmac_sba *sba; |
| 696 | GprsMs *ms; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 697 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 698 | ms = bts_ms_by_tlli(bts(), report->TLLI, GSM_RESERVED_TMSI); |
Pau Espin Pedrol | b69928c | 2020-08-18 20:29:40 +0200 | [diff] [blame] | 699 | if (!ms) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 700 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "MS send measurement " |
| 701 | "but TLLI 0x%08x is unknown\n", report->TLLI); |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 702 | ms = bts_alloc_ms(bts(), 0, 0); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 703 | ms_set_tlli(ms, report->TLLI); |
Pau Espin Pedrol | b69928c | 2020-08-18 20:29:40 +0200 | [diff] [blame] | 704 | } |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 705 | if ((sba = bts_sba(bts())->find(this, fn))) { |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 706 | ms_set_ta(ms, sba->ta); |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 707 | bts_sba(bts())->free_sba(sba); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 708 | } |
Pau Espin Pedrol | b69928c | 2020-08-18 20:29:40 +0200 | [diff] [blame] | 709 | gprs_rlcmac_meas_rep(ms, report); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 710 | } |
| 711 | |
Pau Espin Pedrol | c0a250d | 2021-01-21 18:46:13 +0100 | [diff] [blame] | 712 | void gprs_rlcmac_pdch::rcv_cell_change_notification(Packet_Cell_Change_Notification_t *notif, |
| 713 | uint32_t fn, struct pcu_l1_meas *meas) |
| 714 | { |
| 715 | GprsMs *ms; |
| 716 | |
| 717 | bts_do_rate_ctr_inc(bts(), CTR_PKT_CELL_CHG_NOTIFICATION); |
| 718 | |
| 719 | if (notif->Global_TFI.UnionType == 0) { |
| 720 | struct gprs_rlcmac_ul_tbf *ul_tbf = ul_tbf_by_tfi(notif->Global_TFI.u.UPLINK_TFI); |
| 721 | if (!ul_tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 722 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "UL TBF TFI=0x%2x not found\n", notif->Global_TFI.u.UPLINK_TFI); |
Pau Espin Pedrol | c0a250d | 2021-01-21 18:46:13 +0100 | [diff] [blame] | 723 | return; |
| 724 | } |
| 725 | ms = ul_tbf->ms(); |
| 726 | } else if (notif->Global_TFI.UnionType == 1) { |
| 727 | struct gprs_rlcmac_dl_tbf *dl_tbf = dl_tbf_by_tfi(notif->Global_TFI.u.DOWNLINK_TFI); |
| 728 | if (!dl_tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 729 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "DL TBF TFI=0x%2x not found\n", notif->Global_TFI.u.DOWNLINK_TFI); |
Pau Espin Pedrol | c0a250d | 2021-01-21 18:46:13 +0100 | [diff] [blame] | 730 | return; |
| 731 | } |
| 732 | ms = dl_tbf->ms(); |
| 733 | } else { OSMO_ASSERT(0); } |
| 734 | |
| 735 | ms_update_l1_meas(ms, meas); |
| 736 | ms_nacc_start(ms, notif); |
| 737 | } |
| 738 | |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 739 | /* Received Uplink RLC control block. */ |
Pau Espin Pedrol | 812d466 | 2019-09-25 13:35:11 +0200 | [diff] [blame] | 740 | int gprs_rlcmac_pdch::rcv_control_block(const uint8_t *data, uint8_t data_len, |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 741 | uint32_t fn, struct pcu_l1_meas *meas, enum CodingScheme cs) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 742 | { |
Pau Espin Pedrol | 812d466 | 2019-09-25 13:35:11 +0200 | [diff] [blame] | 743 | bitvec *rlc_block; |
| 744 | RlcMacUplink_t *ul_control_block; |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 745 | unsigned len = mcs_max_bytes_ul(cs); |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 746 | int rc; |
Pau Espin Pedrol | 812d466 | 2019-09-25 13:35:11 +0200 | [diff] [blame] | 747 | |
| 748 | if (!(rlc_block = bitvec_alloc(len, tall_pcu_ctx))) |
| 749 | return -ENOMEM; |
| 750 | bitvec_unpack(rlc_block, data); |
| 751 | ul_control_block = (RlcMacUplink_t *)talloc_zero(tall_pcu_ctx, RlcMacUplink_t); |
| 752 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 753 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ RX : Uplink Control Block +++++++++++++++++++++++++\n"); |
Keith | 6fd8ffb | 2020-03-05 19:48:24 -0600 | [diff] [blame] | 754 | |
Keith | 2b6acd8 | 2020-03-26 16:33:59 -0500 | [diff] [blame] | 755 | rc = decode_gsm_rlcmac_uplink(rlc_block, ul_control_block); |
Keith | 6fd8ffb | 2020-03-05 19:48:24 -0600 | [diff] [blame] | 756 | if (ul_control_block->u.MESSAGE_TYPE == MT_PACKET_UPLINK_DUMMY_CONTROL_BLOCK) |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 757 | bts_send_gsmtap_meas(bts(), PCU_GSMTAP_C_UL_DUMMY, true, trx_no(), ts_no, GSMTAP_CHANNEL_PACCH, fn, data, data_len, meas); |
Keith | 6fd8ffb | 2020-03-05 19:48:24 -0600 | [diff] [blame] | 758 | else |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 759 | bts_send_gsmtap_meas(bts(), PCU_GSMTAP_C_UL_CTRL, true, trx_no(), ts_no, GSMTAP_CHANNEL_PACCH, fn, data, data_len, meas); |
Keith | 6fd8ffb | 2020-03-05 19:48:24 -0600 | [diff] [blame] | 760 | |
Pau Espin Pedrol | 16705a4 | 2020-10-27 10:24:57 +0100 | [diff] [blame] | 761 | if (rc < 0) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 762 | LOGPDCH(this, DRLCMACUL, LOGL_ERROR, "Dropping Uplink Control Block " |
| 763 | "with invalid content, decode failed: %d)\n", rc); |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 764 | goto free_ret; |
| 765 | } |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 766 | LOGPDCH(this, DRLCMAC, LOGL_DEBUG, "------------------------- RX : Uplink Control Block -------------------------\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 767 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 768 | bts_do_rate_ctr_inc(bts(), CTR_RLC_RECV_CONTROL); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 769 | switch (ul_control_block->u.MESSAGE_TYPE) { |
| 770 | case MT_PACKET_CONTROL_ACK: |
| 771 | rcv_control_ack(&ul_control_block->u.Packet_Control_Acknowledgement, fn); |
| 772 | break; |
| 773 | case MT_PACKET_DOWNLINK_ACK_NACK: |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 774 | rcv_control_dl_ack_nack(&ul_control_block->u.Packet_Downlink_Ack_Nack, fn, meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 775 | break; |
| 776 | case MT_EGPRS_PACKET_DOWNLINK_ACK_NACK: |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 777 | rcv_control_egprs_dl_ack_nack(&ul_control_block->u.Egprs_Packet_Downlink_Ack_Nack, fn, meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 778 | break; |
| 779 | case MT_PACKET_RESOURCE_REQUEST: |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 780 | rcv_resource_request(&ul_control_block->u.Packet_Resource_Request, fn, meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 781 | break; |
| 782 | case MT_PACKET_MEASUREMENT_REPORT: |
| 783 | rcv_measurement_report(&ul_control_block->u.Packet_Measurement_Report, fn); |
| 784 | break; |
| 785 | case MT_PACKET_UPLINK_DUMMY_CONTROL_BLOCK: |
| 786 | /* ignoring it. change the SI to not force sending these? */ |
| 787 | break; |
Pau Espin Pedrol | c0a250d | 2021-01-21 18:46:13 +0100 | [diff] [blame] | 788 | case MT_PACKET_CELL_CHANGE_NOTIFICATION: |
| 789 | rcv_cell_change_notification(&ul_control_block->u.Packet_Cell_Change_Notification, fn, meas); |
| 790 | break; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 791 | default: |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 792 | bts_do_rate_ctr_inc(bts(), CTR_DECODE_ERRORS); |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 793 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 794 | "RX: [PCU <- BTS] unknown control block(%d) received\n", |
| 795 | ul_control_block->u.MESSAGE_TYPE); |
| 796 | } |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 797 | free_ret: |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 798 | talloc_free(ul_control_block); |
Pau Espin Pedrol | 812d466 | 2019-09-25 13:35:11 +0200 | [diff] [blame] | 799 | bitvec_free(rlc_block); |
Pau Espin Pedrol | 5e300ce | 2020-02-03 17:18:03 +0100 | [diff] [blame] | 800 | return rc; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 801 | } |
| 802 | |
| 803 | /* received RLC/MAC block from L1 */ |
| 804 | int gprs_rlcmac_pdch::rcv_block(uint8_t *data, uint8_t len, uint32_t fn, |
| 805 | struct pcu_l1_meas *meas) |
| 806 | { |
Pau Espin Pedrol | 3061711 | 2021-03-05 18:59:05 +0100 | [diff] [blame] | 807 | /* First of all, update TDMA clock: */ |
| 808 | bts_set_current_frame_number(trx->bts, fn); |
| 809 | |
Pau Espin Pedrol | 3cba94d | 2021-03-05 18:54:01 +0100 | [diff] [blame] | 810 | /* No successfully decoded UL block was received during this FN: */ |
| 811 | if (len == 0) { |
| 812 | /* TODO: Here, in the future, it can be checked whether a UL block was expected for: |
| 813 | * - UL/DL TBFs: RRBP poll pending (bts->pollController->expireTimedout) |
| 814 | * - UL TBFs: USF poll pending (we don't store this info in ul_tbf yet) -> inc N3101 (OS#5033) |
| 815 | */ |
| 816 | return 0; |
| 817 | } |
| 818 | |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 819 | enum CodingScheme cs = mcs_get_by_size_ul(len); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 820 | if (!cs) { |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 821 | bts_do_rate_ctr_inc(bts(), CTR_DECODE_ERRORS); |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 822 | LOGPDCH(this, DRLCMACUL, LOGL_ERROR, "Dropping data block with invalid " |
| 823 | "length %d: %s\n", len, osmo_hexdump(data, len)); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 824 | return -EINVAL; |
| 825 | } |
| 826 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 827 | bts_do_rate_ctr_add(bts(), CTR_RLC_UL_BYTES, len); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 828 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 829 | LOGPDCH(this, DRLCMACUL, LOGL_DEBUG, "Got RLC block, coding scheme: %s, " |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 830 | "length: %d (%d))\n", mcs_name(cs), len, mcs_used_size_ul(cs)); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 831 | |
Max | 8a8e0fb | 2019-03-25 16:32:50 +0100 | [diff] [blame] | 832 | if (mcs_is_gprs(cs)) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 833 | return rcv_block_gprs(data, len, fn, meas, cs); |
| 834 | |
Max | 8a8e0fb | 2019-03-25 16:32:50 +0100 | [diff] [blame] | 835 | if (mcs_is_edge(cs)) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 836 | return rcv_data_block(data, len, fn, meas, cs); |
| 837 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 838 | bts_do_rate_ctr_inc(bts(), CTR_DECODE_ERRORS); |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 839 | LOGPDCH(this, DRLCMACUL, LOGL_ERROR, "Unsupported coding scheme %s\n", |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 840 | mcs_name(cs)); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 841 | return -EINVAL; |
| 842 | } |
| 843 | |
| 844 | /*! \brief process egprs and gprs data blocks */ |
| 845 | int gprs_rlcmac_pdch::rcv_data_block(uint8_t *data, uint8_t data_len, uint32_t fn, |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 846 | struct pcu_l1_meas *meas, enum CodingScheme cs) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 847 | { |
| 848 | int rc; |
| 849 | struct gprs_rlc_data_info rlc_dec; |
| 850 | struct gprs_rlcmac_ul_tbf *tbf; |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 851 | unsigned len = mcs_size_ul(cs); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 852 | |
| 853 | /* These are always data blocks, since EGPRS still uses CS-1 for |
| 854 | * control blocks (see 44.060, section 10.3, 1st par.) |
| 855 | */ |
Max | 8a8e0fb | 2019-03-25 16:32:50 +0100 | [diff] [blame] | 856 | if (mcs_is_edge(cs)) { |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 857 | bts_send_gsmtap_meas(bts(), PCU_GSMTAP_C_UL_DATA_EGPRS, true, |
Pau Espin Pedrol | 0b0391f | 2020-05-19 17:23:23 +0200 | [diff] [blame] | 858 | trx_no(), ts_no, GSMTAP_CHANNEL_PDTCH, fn, |
| 859 | data, data_len, meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 860 | } else { |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 861 | bts_send_gsmtap_meas(bts(), PCU_GSMTAP_C_UL_DATA_GPRS, true, |
Pau Espin Pedrol | 0b0391f | 2020-05-19 17:23:23 +0200 | [diff] [blame] | 862 | trx_no(), ts_no, GSMTAP_CHANNEL_PDTCH, fn, |
| 863 | data, data_len, meas); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 864 | } |
| 865 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 866 | LOGPDCH(this, DRLCMACUL, LOGL_DEBUG, " UL data: %s\n", osmo_hexdump(data, len)); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 867 | |
| 868 | rc = Decoding::rlc_parse_ul_data_header(&rlc_dec, data, cs); |
| 869 | if (rc < 0) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 870 | LOGPDCH(this, DRLCMACUL, LOGL_ERROR, |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 871 | "Got %s RLC block but header parsing has failed\n", |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 872 | mcs_name(cs)); |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 873 | bts_do_rate_ctr_inc(bts(), CTR_DECODE_ERRORS); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 874 | return rc; |
| 875 | } |
| 876 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 877 | LOGPDCH(this, DRLCMACUL, LOGL_INFO, |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 878 | "Got %s RLC block: " |
| 879 | "R=%d, SI=%d, TFI=%d, CPS=%d, RSB=%d, " |
| 880 | "rc=%d\n", |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 881 | mcs_name(cs), |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 882 | rlc_dec.r, rlc_dec.si, rlc_dec.tfi, rlc_dec.cps, rlc_dec.rsb, |
| 883 | rc); |
| 884 | |
| 885 | /* find TBF inst from given TFI */ |
| 886 | tbf = ul_tbf_by_tfi(rlc_dec.tfi); |
| 887 | if (!tbf) { |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 888 | LOGPDCH(this, DRLCMACUL, LOGL_NOTICE, "UL DATA unknown TFI=%d\n", |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 889 | rlc_dec.tfi); |
| 890 | return 0; |
| 891 | } |
| 892 | |
| 893 | /* Reset N3101 counter: */ |
Max | 847ed9f | 2018-02-20 18:16:11 +0100 | [diff] [blame] | 894 | tbf->n_reset(N3101); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 895 | |
| 896 | return tbf->rcv_data_block_acknowledged(&rlc_dec, data, meas); |
| 897 | } |
| 898 | |
| 899 | int gprs_rlcmac_pdch::rcv_block_gprs(uint8_t *data, uint8_t data_len, uint32_t fn, |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 900 | struct pcu_l1_meas *meas, enum CodingScheme cs) |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 901 | { |
| 902 | unsigned payload = data[0] >> 6; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 903 | int rc = 0; |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 904 | |
| 905 | switch (payload) { |
| 906 | case GPRS_RLCMAC_DATA_BLOCK: |
| 907 | rc = rcv_data_block(data, data_len, fn, meas, cs); |
| 908 | break; |
| 909 | case GPRS_RLCMAC_CONTROL_BLOCK: |
Pau Espin Pedrol | e13cdc5 | 2019-09-25 13:46:14 +0200 | [diff] [blame] | 910 | rc = rcv_control_block(data, data_len, fn, meas, cs); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 911 | break; |
| 912 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 913 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 914 | break; |
| 915 | default: |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 916 | LOGPDCH(this, DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload(%u).\n", payload); |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 917 | rc = -EINVAL; |
| 918 | } |
| 919 | |
| 920 | return rc; |
| 921 | } |
| 922 | |
| 923 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_from_list_by_tfi( |
| 924 | LListHead<gprs_rlcmac_tbf> *tbf_list, uint8_t tfi, |
| 925 | enum gprs_rlcmac_tbf_direction dir) |
| 926 | { |
| 927 | gprs_rlcmac_tbf *tbf; |
| 928 | LListHead<gprs_rlcmac_tbf> *pos; |
| 929 | |
| 930 | llist_for_each(pos, tbf_list) { |
| 931 | tbf = pos->entry(); |
| 932 | if (tbf->tfi() != tfi) |
| 933 | continue; |
| 934 | if (!tbf->pdch[ts_no]) |
| 935 | continue; |
| 936 | return tbf; |
| 937 | } |
| 938 | return NULL; |
| 939 | } |
| 940 | |
| 941 | gprs_rlcmac_ul_tbf *gprs_rlcmac_pdch::ul_tbf_by_tfi(uint8_t tfi) |
| 942 | { |
| 943 | return as_ul_tbf(tbf_by_tfi(tfi, GPRS_RLCMAC_UL_TBF)); |
| 944 | } |
| 945 | |
| 946 | gprs_rlcmac_dl_tbf *gprs_rlcmac_pdch::dl_tbf_by_tfi(uint8_t tfi) |
| 947 | { |
| 948 | return as_dl_tbf(tbf_by_tfi(tfi, GPRS_RLCMAC_DL_TBF)); |
| 949 | } |
| 950 | |
| 951 | /* lookup TBF Entity (by TFI) */ |
| 952 | gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_by_tfi(uint8_t tfi, |
| 953 | enum gprs_rlcmac_tbf_direction dir) |
| 954 | { |
| 955 | struct gprs_rlcmac_tbf *tbf; |
| 956 | |
| 957 | if (tfi >= 32) |
| 958 | return NULL; |
| 959 | |
| 960 | tbf = m_tbfs[dir][tfi]; |
| 961 | |
| 962 | if (!tbf) |
| 963 | return NULL; |
| 964 | |
| 965 | if (tbf->state_is_not(GPRS_RLCMAC_RELEASING)) { |
| 966 | return tbf; |
| 967 | } |
| 968 | |
| 969 | return NULL; |
| 970 | } |
| 971 | |
| 972 | void gprs_rlcmac_pdch::attach_tbf(gprs_rlcmac_tbf *tbf) |
| 973 | { |
| 974 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 975 | |
| 976 | if (m_tbfs[tbf->direction][tbf->tfi()]) |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 977 | LOGPDCH(this, DRLCMAC, LOGL_ERROR, |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 978 | "%s has not been detached, overwriting it\n", |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 979 | m_tbfs[tbf->direction][tbf->tfi()]->name()); |
| 980 | |
| 981 | m_num_tbfs[tbf->direction] += 1; |
| 982 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 983 | ul_tbf = as_ul_tbf(tbf); |
| 984 | m_assigned_usf |= 1 << ul_tbf->m_usf[ts_no]; |
| 985 | } |
| 986 | m_assigned_tfi[tbf->direction] |= 1UL << tbf->tfi(); |
| 987 | m_tbfs[tbf->direction][tbf->tfi()] = tbf; |
| 988 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 989 | LOGPDCH(this, DRLCMAC, LOGL_INFO, "Attaching %s, %d TBFs, " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 990 | "USFs = %02x, TFIs = %08x.\n", |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 991 | tbf->name(), m_num_tbfs[tbf->direction], |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 992 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
| 993 | } |
| 994 | |
| 995 | void gprs_rlcmac_pdch::detach_tbf(gprs_rlcmac_tbf *tbf) |
| 996 | { |
| 997 | gprs_rlcmac_ul_tbf *ul_tbf; |
| 998 | |
| 999 | OSMO_ASSERT(m_num_tbfs[tbf->direction] > 0); |
| 1000 | |
| 1001 | m_num_tbfs[tbf->direction] -= 1; |
| 1002 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 1003 | ul_tbf = as_ul_tbf(tbf); |
| 1004 | m_assigned_usf &= ~(1 << ul_tbf->m_usf[ts_no]); |
| 1005 | } |
| 1006 | m_assigned_tfi[tbf->direction] &= ~(1UL << tbf->tfi()); |
| 1007 | m_tbfs[tbf->direction][tbf->tfi()] = NULL; |
| 1008 | |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 1009 | LOGPDCH(this, DRLCMAC, LOGL_INFO, "Detaching %s, %d TBFs, " |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 1010 | "USFs = %02x, TFIs = %08x.\n", |
Pau Espin Pedrol | 95e2266 | 2021-02-25 17:49:30 +0100 | [diff] [blame] | 1011 | tbf->name(), m_num_tbfs[tbf->direction], |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 1012 | m_assigned_usf, m_assigned_tfi[tbf->direction]); |
| 1013 | } |
| 1014 | |
Pau Espin Pedrol | 2286288 | 2020-11-16 17:35:10 +0100 | [diff] [blame] | 1015 | bool gprs_rlcmac_pdch::has_gprs_only_tbf_attached() const |
| 1016 | { |
| 1017 | unsigned int i; |
| 1018 | unsigned int j; |
| 1019 | for (i = 0; i < sizeof(m_assigned_tfi[0]); i++) { |
| 1020 | for (j = 0; j < 2; j++) { |
| 1021 | if (m_assigned_tfi[j] & (1UL << i)) { |
| 1022 | gprs_rlcmac_tbf *tbf = m_tbfs[j][i]; |
| 1023 | if (!tbf->is_egprs_enabled()) |
| 1024 | return true; |
| 1025 | } |
| 1026 | } |
| 1027 | } |
| 1028 | return false; |
| 1029 | } |
| 1030 | |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 1031 | void gprs_rlcmac_pdch::reserve(enum gprs_rlcmac_tbf_direction dir) |
| 1032 | { |
| 1033 | m_num_reserved[dir] += 1; |
| 1034 | } |
| 1035 | |
| 1036 | void gprs_rlcmac_pdch::unreserve(enum gprs_rlcmac_tbf_direction dir) |
| 1037 | { |
| 1038 | OSMO_ASSERT(m_num_reserved[dir] > 0); |
| 1039 | m_num_reserved[dir] -= 1; |
| 1040 | } |
| 1041 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 1042 | inline struct gprs_rlcmac_bts *gprs_rlcmac_pdch::bts() const |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 1043 | { |
| 1044 | return trx->bts; |
| 1045 | } |
| 1046 | |
| 1047 | uint8_t gprs_rlcmac_pdch::trx_no() const |
| 1048 | { |
| 1049 | return trx->trx_no; |
| 1050 | } |
| 1051 | |
Vadim Yanitskiy | bd0dac3 | 2019-10-05 21:57:14 +0700 | [diff] [blame] | 1052 | uint8_t gprs_rlcmac_pdch::reserve_tai(uint8_t ta) |
| 1053 | { |
| 1054 | uint8_t tai; |
| 1055 | |
| 1056 | for (tai = 0; tai < PTCCH_TAI_NUM; tai++) { |
| 1057 | if (ptcch_msg[tai] == PTCCH_TAI_FREE) { |
| 1058 | ptcch_msg[tai] = ta; |
| 1059 | return tai; |
| 1060 | } |
| 1061 | } |
| 1062 | |
| 1063 | /* Special case: no free TAI available */ |
| 1064 | return PTCCH_TAI_FREE; |
| 1065 | } |
| 1066 | |
| 1067 | void gprs_rlcmac_pdch::release_tai(uint8_t tai) |
| 1068 | { |
| 1069 | OSMO_ASSERT(tai < PTCCH_TAI_NUM); |
| 1070 | ptcch_msg[tai] = PTCCH_TAI_FREE; |
| 1071 | } |
| 1072 | |
| 1073 | void gprs_rlcmac_pdch::update_ta(uint8_t tai, uint8_t ta) |
| 1074 | { |
| 1075 | OSMO_ASSERT(tai < PTCCH_TAI_NUM); |
| 1076 | ptcch_msg[tai] = ta; |
| 1077 | } |
Pau Espin Pedrol | 906aafc | 2021-01-18 17:53:29 +0100 | [diff] [blame] | 1078 | |
| 1079 | void pdch_free_all_tbf(struct gprs_rlcmac_pdch *pdch) |
| 1080 | { |
| 1081 | for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| 1082 | struct gprs_rlcmac_tbf *tbf; |
| 1083 | |
| 1084 | tbf = pdch->ul_tbf_by_tfi(tfi); |
| 1085 | if (tbf) |
| 1086 | tbf_free(tbf); |
| 1087 | tbf = pdch->dl_tbf_by_tfi(tfi); |
| 1088 | if (tbf) |
| 1089 | tbf_free(tbf); |
| 1090 | } |
| 1091 | } |
Pau Espin Pedrol | e91c4c7 | 2021-01-18 17:54:30 +0100 | [diff] [blame] | 1092 | |
| 1093 | void pdch_disable(struct gprs_rlcmac_pdch *pdch) { |
| 1094 | pdch->disable(); |
| 1095 | } |