Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1 | /* pcu_l1_if.cpp |
| 2 | * |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 3 | * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License |
| 7 | * as published by the Free Software Foundation; either version 2 |
| 8 | * of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 20 | #include <stdio.h> |
| 21 | #include <unistd.h> |
Pau Espin Pedrol | 32499b6 | 2019-12-09 13:55:12 +0100 | [diff] [blame] | 22 | #include <inttypes.h> |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 23 | #include <stdlib.h> |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 24 | #include <string.h> |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 25 | #include <errno.h> |
| 26 | #include <assert.h> |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 27 | #include <sys/socket.h> |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 28 | #include <sys/un.h> |
Andreas Eversberg | 81a12be | 2013-03-16 16:16:41 +0100 | [diff] [blame] | 29 | #include <arpa/inet.h> |
Pau Espin Pedrol | 754b093 | 2020-03-26 14:47:13 +0100 | [diff] [blame] | 30 | #include <ctype.h> |
Max | 1187a77 | 2018-01-26 13:31:42 +0100 | [diff] [blame] | 31 | |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 32 | extern "C" { |
| 33 | #include <osmocom/core/talloc.h> |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 34 | #include <osmocom/core/select.h> |
| 35 | #include <osmocom/core/msgb.h> |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 36 | #include <osmocom/core/gsmtap_util.h> |
| 37 | #include <osmocom/core/gsmtap.h> |
Max | 1187a77 | 2018-01-26 13:31:42 +0100 | [diff] [blame] | 38 | #include <osmocom/core/bitvec.h> |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 39 | #include <osmocom/core/sockaddr_str.h> |
Max | 1187a77 | 2018-01-26 13:31:42 +0100 | [diff] [blame] | 40 | #include <osmocom/core/logging.h> |
| 41 | #include <osmocom/core/utils.h> |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 42 | #include <osmocom/gprs/gprs_ns2.h> |
Max | 1187a77 | 2018-01-26 13:31:42 +0100 | [diff] [blame] | 43 | #include <osmocom/gsm/l1sap.h> |
| 44 | #include <osmocom/gsm/protocol/gsm_04_08.h> |
Pau Espin Pedrol | fe8de45 | 2021-02-09 18:47:34 +0100 | [diff] [blame] | 45 | #include <osmocom/gsm/gsm48_rest_octets.h> |
Philipp Maier | a58ec61 | 2021-01-25 23:43:52 +0100 | [diff] [blame] | 46 | #include <osmocom/gsm/sysinfo.h> |
Pau Espin Pedrol | 5557c0a | 2021-09-07 14:09:50 +0200 | [diff] [blame] | 47 | |
| 48 | #include <nacc_fsm.h> |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 49 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 50 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 51 | #include <gprs_rlcmac.h> |
| 52 | #include <pcu_l1_if.h> |
| 53 | #include <gprs_debug.h> |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 54 | #include <gprs_bssgp_pcu.h> |
Harald Welte | 68fc127 | 2016-11-16 22:48:33 +0100 | [diff] [blame] | 55 | #include <osmocom/pcu/pcuif_proto.h> |
Holger Hans Peter Freyther | 67ed34e | 2013-10-17 17:01:54 +0200 | [diff] [blame] | 56 | #include <bts.h> |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 57 | #include <pdch.h> |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 58 | #include <tbf_ul.h> |
| 59 | #include <tbf_dl.h> |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 60 | #include <gprs_ms_storage.h> |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 61 | |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 62 | // FIXME: move this, when changed from c++ to c. |
| 63 | extern "C" { |
Max | 58b6646 | 2016-05-13 10:34:15 +0200 | [diff] [blame] | 64 | void *l1if_open_pdch(uint8_t trx_no, uint32_t hlayer1, |
| 65 | struct gsmtap_inst *gsmtap); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 66 | int l1if_connect_pdch(void *obj, uint8_t ts); |
| 67 | int l1if_pdch_req(void *obj, uint8_t ts, int is_ptcch, uint32_t fn, |
| 68 | uint16_t arfcn, uint8_t block_nr, uint8_t *data, uint8_t len); |
| 69 | } |
| 70 | |
Andreas Eversberg | e266bd4 | 2012-07-13 14:00:21 +0200 | [diff] [blame] | 71 | extern void *tall_pcu_ctx; |
| 72 | |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 73 | #define PAGING_GROUP_LEN 3 |
| 74 | |
| 75 | /* returns [0,999] on success, > 999 on error */ |
| 76 | uint16_t imsi2paging_group(const char* imsi) |
| 77 | { |
| 78 | uint16_t pgroup = 0; |
Vadim Yanitskiy | bd0b0b3 | 2020-01-16 00:25:48 +0700 | [diff] [blame] | 79 | size_t len; |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 80 | |
Vadim Yanitskiy | bd0b0b3 | 2020-01-16 00:25:48 +0700 | [diff] [blame] | 81 | len = (imsi != NULL) ? strlen(imsi) : 0; |
| 82 | if (len < PAGING_GROUP_LEN) |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 83 | return 0xFFFF; |
| 84 | imsi += len - PAGING_GROUP_LEN; |
| 85 | |
| 86 | while (*imsi != '\0') { |
| 87 | if (!isdigit(*imsi)) |
| 88 | return 0xFFFF; |
| 89 | pgroup *= 10; |
| 90 | pgroup += *imsi - '0'; |
| 91 | imsi++; |
| 92 | } |
| 93 | return pgroup; |
| 94 | } |
| 95 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 96 | /* |
| 97 | * PCU messages |
| 98 | */ |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 99 | |
Pau Espin Pedrol | 5557c0a | 2021-09-07 14:09:50 +0200 | [diff] [blame] | 100 | /* Can be used to allocate message with non-variable size */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 101 | struct msgb *pcu_msgb_alloc(uint8_t msg_type, uint8_t bts_nr) |
| 102 | { |
| 103 | struct msgb *msg; |
| 104 | struct gsm_pcu_if *pcu_prim; |
| 105 | |
| 106 | msg = msgb_alloc(sizeof(struct gsm_pcu_if), "pcu_sock_tx"); |
| 107 | if (!msg) |
| 108 | return NULL; |
| 109 | msgb_put(msg, sizeof(struct gsm_pcu_if)); |
| 110 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 111 | pcu_prim->msg_type = msg_type; |
| 112 | pcu_prim->bts_nr = bts_nr; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 113 | |
| 114 | return msg; |
| 115 | } |
| 116 | |
Pau Espin Pedrol | 5557c0a | 2021-09-07 14:09:50 +0200 | [diff] [blame] | 117 | /* Allocate message with extra size, only reserve pcuif msg hdr */ |
| 118 | static struct msgb *pcu_msgb_alloc_ext_size(uint8_t msg_type, uint8_t bts_nr, size_t extra_size) |
| 119 | { |
| 120 | struct msgb *msg; |
| 121 | struct gsm_pcu_if *pcu_prim; |
| 122 | msg = msgb_alloc(sizeof(struct gsm_pcu_if) + extra_size, "pcu_sock_tx"); |
| 123 | /* Only header is filled, caller is responible for reserving + filling |
| 124 | * message type specific contents: */ |
| 125 | msgb_put(msg, PCUIF_HDR_SIZE); |
| 126 | pcu_prim = (struct gsm_pcu_if *) msgb_data(msg); |
| 127 | pcu_prim->msg_type = msg_type; |
| 128 | pcu_prim->bts_nr = bts_nr; |
| 129 | return msg; |
| 130 | } |
| 131 | |
Max | 0a8fae8 | 2017-03-08 18:53:30 +0100 | [diff] [blame] | 132 | const struct value_string gsm_pcu_if_text_type_names[] = { |
| 133 | OSMO_VALUE_STRING(PCU_VERSION), |
| 134 | OSMO_VALUE_STRING(PCU_OML_ALERT), |
| 135 | { 0, NULL } |
| 136 | }; |
| 137 | |
| 138 | int pcu_tx_txt_ind(enum gsm_pcu_if_text_type t, const char *fmt, ...) |
| 139 | { |
| 140 | struct gsm_pcu_if *pcu_prim; |
| 141 | struct gsm_pcu_if_txt_ind *txt; |
| 142 | va_list ap; |
| 143 | char *rep; |
| 144 | struct msgb *msg = pcu_msgb_alloc(PCU_IF_MSG_TXT_IND, 0); |
| 145 | if (!msg) |
| 146 | return -ENOMEM; |
| 147 | |
| 148 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 149 | txt = &pcu_prim->u.txt_ind; |
| 150 | txt->type = t; |
| 151 | |
| 152 | va_start(ap, fmt); |
| 153 | rep = talloc_vasprintf(tall_pcu_ctx, fmt, ap); |
| 154 | va_end(ap); |
| 155 | |
| 156 | if (!rep) |
| 157 | return -ENOMEM; |
| 158 | |
| 159 | osmo_strlcpy(txt->text, rep, TXT_MAX_LEN); |
| 160 | talloc_free(rep); |
| 161 | |
| 162 | LOGP(DL1IF, LOGL_INFO, "Sending %s TXT as %s to BTS\n", txt->text, |
| 163 | get_value_string(gsm_pcu_if_text_type_names, t)); |
| 164 | |
| 165 | return pcu_sock_send(msg); |
| 166 | } |
| 167 | |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 168 | static int pcu_tx_act_req(struct gprs_rlcmac_bts *bts, const struct gprs_rlcmac_pdch *pdch, |
| 169 | uint8_t activate) |
Ivan Kluchnikov | 4277f0c | 2012-04-12 14:24:35 +0400 | [diff] [blame] | 170 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 171 | struct msgb *msg; |
| 172 | struct gsm_pcu_if *pcu_prim; |
| 173 | struct gsm_pcu_if_act_req *act_req; |
| 174 | |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 175 | LOGPDCH(pdch, DL1IF, LOGL_INFO, "Sending %s request\n", |
| 176 | (activate) ? "activate" : "deactivate"); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 177 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 178 | msg = pcu_msgb_alloc(PCU_IF_MSG_ACT_REQ, bts->nr); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 179 | if (!msg) |
| 180 | return -ENOMEM; |
| 181 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 182 | act_req = &pcu_prim->u.act_req; |
| 183 | act_req->activate = activate; |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 184 | act_req->trx_nr = pdch->trx_no(); |
| 185 | act_req->ts_nr = pdch->ts_no; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 186 | |
| 187 | return pcu_sock_send(msg); |
| 188 | } |
| 189 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 190 | static int pcu_tx_data_req(struct gprs_rlcmac_bts *bts, uint8_t trx, uint8_t ts, uint8_t sapi, |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 191 | uint16_t arfcn, uint32_t fn, uint8_t block_nr, uint8_t *data, |
| 192 | uint8_t len) |
| 193 | { |
| 194 | struct msgb *msg; |
| 195 | struct gsm_pcu_if *pcu_prim; |
| 196 | struct gsm_pcu_if_data *data_req; |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 197 | int current_fn = bts_current_frame_number(bts); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 198 | |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 199 | LOGP(DL1IF, LOGL_DEBUG, "(bts=%u,trx=%u,ts=%u) FN=%u Sending data request: sapi=%d " |
| 200 | "arfcn=%d cur_fn=%d block=%d data=%s\n", bts->nr, trx, ts, fn, sapi, |
| 201 | arfcn, current_fn, block_nr, osmo_hexdump(data, len)); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 202 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 203 | msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_REQ, bts->nr); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 204 | if (!msg) |
| 205 | return -ENOMEM; |
| 206 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 207 | data_req = &pcu_prim->u.data_req; |
| 208 | |
| 209 | data_req->sapi = sapi; |
| 210 | data_req->fn = fn; |
| 211 | data_req->arfcn = arfcn; |
| 212 | data_req->trx_nr = trx; |
| 213 | data_req->ts_nr = ts; |
| 214 | data_req->block_nr = block_nr; |
| 215 | memcpy(data_req->data, data, len); |
| 216 | data_req->len = len; |
| 217 | |
| 218 | return pcu_sock_send(msg); |
| 219 | } |
| 220 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 221 | void pcu_l1if_tx_pdtch(msgb *msg, struct gprs_rlcmac_bts *bts, uint8_t trx, uint8_t ts, uint16_t arfcn, |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 222 | uint32_t fn, uint8_t block_nr) |
| 223 | { |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 224 | #ifdef ENABLE_DIRECT_PHY |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 225 | if (bts->trx[trx].fl1h) { |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 226 | l1if_pdch_req(bts->trx[trx].fl1h, ts, 0, fn, arfcn, block_nr, |
| 227 | msg->data, msg->len); |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 228 | msgb_free(msg); |
| 229 | return; |
| 230 | } |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 231 | #endif |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 232 | pcu_tx_data_req(bts, trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr, |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 233 | msg->data, msg->len); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 234 | msgb_free(msg); |
Ivan Kluchnikov | 4277f0c | 2012-04-12 14:24:35 +0400 | [diff] [blame] | 235 | } |
| 236 | |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 237 | void pcu_l1if_tx_ptcch(struct gprs_rlcmac_bts *bts, |
| 238 | uint8_t trx, uint8_t ts, uint16_t arfcn, |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 239 | uint32_t fn, uint8_t block_nr, |
| 240 | uint8_t *data, size_t data_len) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 241 | { |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 242 | if (the_pcu->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_PTCCH)) |
| 243 | gsmtap_send(the_pcu->gsmtap, arfcn, ts, GSMTAP_CHANNEL_PTCCH, 0, fn, 0, 0, data, data_len); |
Max | cad867e | 2016-04-21 14:35:55 +0200 | [diff] [blame] | 244 | #ifdef ENABLE_DIRECT_PHY |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 245 | if (bts->trx[trx].fl1h) { |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 246 | l1if_pdch_req(bts->trx[trx].fl1h, ts, 1, fn, arfcn, block_nr, data, data_len); |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 247 | return; |
| 248 | } |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 249 | #endif |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 250 | pcu_tx_data_req(bts, trx, ts, PCU_IF_SAPI_PTCCH, arfcn, fn, block_nr, data, data_len); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 251 | } |
| 252 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 253 | void pcu_l1if_tx_agch(struct gprs_rlcmac_bts *bts, bitvec * block, int plen) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 254 | { |
Pau Espin Pedrol | d752d7c | 2019-10-07 20:56:48 +0200 | [diff] [blame] | 255 | uint8_t data[GSM_MACBLOCK_LEN]; /* prefix PLEN */ |
| 256 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 257 | /* FIXME: why does OpenBTS has no PLEN and no fill in message? */ |
| 258 | bitvec_pack(block, data + 1); |
| 259 | data[0] = (plen << 2) | 0x01; |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 260 | |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 261 | if (the_pcu->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_AGCH)) |
| 262 | gsmtap_send(the_pcu->gsmtap, 0, 0, GSMTAP_CHANNEL_AGCH, 0, 0, 0, 0, data, GSM_MACBLOCK_LEN); |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 263 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 264 | pcu_tx_data_req(bts, 0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, GSM_MACBLOCK_LEN); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 265 | } |
| 266 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 267 | void pcu_l1if_tx_pch(struct gprs_rlcmac_bts *bts, bitvec * block, int plen, uint16_t pgroup) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 268 | { |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 269 | uint8_t data[PAGING_GROUP_LEN + GSM_MACBLOCK_LEN]; |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 270 | int i; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 271 | |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 272 | /* prepend paging group */ |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 273 | for (i = 0; i < PAGING_GROUP_LEN; i++) { |
| 274 | data[PAGING_GROUP_LEN - 1 - i] = '0' + (char)(pgroup % 10); |
| 275 | pgroup = pgroup / 10; |
| 276 | } |
| 277 | OSMO_ASSERT(pgroup == 0); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 278 | |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 279 | /* block provided by upper layer comes without first byte (plen), |
| 280 | * prepend it manually: |
| 281 | */ |
| 282 | OSMO_ASSERT(sizeof(data) >= PAGING_GROUP_LEN + 1 + block->data_len); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 283 | data[3] = (plen << 2) | 0x01; |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 284 | bitvec_pack(block, data + PAGING_GROUP_LEN + 1); |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 285 | |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 286 | if (the_pcu->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_PCH)) |
| 287 | gsmtap_send(the_pcu->gsmtap, 0, 0, GSMTAP_CHANNEL_PCH, 0, 0, 0, 0, data + 3, GSM_MACBLOCK_LEN); |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 288 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 289 | pcu_tx_data_req(bts, 0, 0, PCU_IF_SAPI_PCH, 0, 0, 0, data, PAGING_GROUP_LEN + GSM_MACBLOCK_LEN); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 290 | } |
| 291 | |
Pau Espin Pedrol | 5557c0a | 2021-09-07 14:09:50 +0200 | [diff] [blame] | 292 | int pcu_tx_neigh_addr_res_req(struct gprs_rlcmac_bts *bts, const struct neigh_cache_entry_key *neigh_key) |
| 293 | { |
| 294 | struct msgb *msg; |
| 295 | struct gsm_pcu_if *pcu_prim; |
| 296 | struct gsm_pcu_if_neigh_addr_req *naddr_req; |
| 297 | |
| 298 | LOGP(DL1IF, LOGL_DEBUG, "(bts=%u) Tx Neighbor Address Resolution Request: " NEIGH_CACHE_ENTRY_KEY_FMT "\n", |
| 299 | bts->nr, NEIGH_CACHE_ENTRY_KEY_ARGS(neigh_key)); |
| 300 | |
| 301 | msg = pcu_msgb_alloc_ext_size(PCU_IF_MSG_CONTAINER, bts->nr, sizeof(struct gsm_pcu_if_neigh_addr_req)); |
| 302 | if (!msg) |
| 303 | return -ENOMEM; |
| 304 | pcu_prim = (struct gsm_pcu_if *) msgb_data(msg); |
| 305 | naddr_req = (struct gsm_pcu_if_neigh_addr_req *)&pcu_prim->u.container.data[0]; |
| 306 | |
| 307 | msgb_put(msg, sizeof(pcu_prim->u.container) + sizeof(struct gsm_pcu_if_neigh_addr_req)); |
| 308 | pcu_prim->u.container.msg_type = PCU_IF_MSG_NEIGH_ADDR_REQ; |
| 309 | osmo_store16be(sizeof(struct gsm_pcu_if_neigh_addr_req), &pcu_prim->u.container.length); |
| 310 | |
| 311 | osmo_store16be(neigh_key->local_lac, &naddr_req->local_lac); |
| 312 | osmo_store16be(neigh_key->local_ci, &naddr_req->local_ci); |
| 313 | osmo_store16be(neigh_key->tgt_arfcn, &naddr_req->tgt_arfcn); |
| 314 | naddr_req->tgt_bsic = neigh_key->tgt_bsic; |
| 315 | |
| 316 | return pcu_sock_send(msg); |
| 317 | } |
| 318 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 319 | void pcu_rx_block_time(struct gprs_rlcmac_bts *bts, uint16_t arfcn, uint32_t fn, uint8_t ts_no) |
Jacob Erlbeck | af75ce8 | 2015-08-26 13:22:28 +0200 | [diff] [blame] | 320 | { |
Pau Espin Pedrol | fecab50 | 2021-03-17 15:26:37 +0100 | [diff] [blame] | 321 | bts_set_current_block_frame_number(bts, fn); |
Jacob Erlbeck | af75ce8 | 2015-08-26 13:22:28 +0200 | [diff] [blame] | 322 | } |
| 323 | |
Pau Espin Pedrol | c1f31c4 | 2021-03-09 14:50:14 +0100 | [diff] [blame] | 324 | int pcu_rx_data_ind_pdtch(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_pdch *pdch, uint8_t *data, |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 325 | uint8_t len, uint32_t fn, struct pcu_l1_meas *meas) |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 326 | { |
Pau Espin Pedrol | 15c58ac | 2021-03-08 14:57:58 +0100 | [diff] [blame] | 327 | int rc; |
| 328 | |
Pau Espin Pedrol | 3bbb3cc | 2021-08-31 14:09:42 +0200 | [diff] [blame] | 329 | if (!pdch->is_enabled()) { |
| 330 | LOGPDCH(pdch, DL1IF, LOGL_INFO, "Received DATA.ind (PDTCH) on disabled TS\n"); |
| 331 | return -EINVAL; |
| 332 | } |
| 333 | |
Pau Espin Pedrol | 15c58ac | 2021-03-08 14:57:58 +0100 | [diff] [blame] | 334 | rc = pdch->rcv_block(data, len, fn, meas); |
| 335 | pdch_ulc_expire_fn(pdch->ulc, fn); |
| 336 | return rc; |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 337 | } |
| 338 | |
Pau Espin Pedrol | 86f4c09 | 2021-06-08 18:53:40 +0200 | [diff] [blame] | 339 | static int list_arfcn(const struct gprs_rlcmac_bts *bts, const struct gsm_sysinfo_freq *freq, const char *text) |
| 340 | { |
| 341 | int n = 0, i; |
| 342 | for (i = 0; i < 1024; i++) { |
| 343 | if (freq[i].mask) { |
| 344 | if (!n) |
| 345 | LOGP(DL1IF, LOGL_INFO, "BTS%d: %s", bts->nr, text); |
| 346 | LOGPC(DL1IF, LOGL_INFO, " %d", i); |
| 347 | n++; |
| 348 | } |
| 349 | } |
| 350 | if (n) |
| 351 | LOGPC(DL1IF, LOGL_INFO, "\n"); |
| 352 | |
| 353 | return n; |
| 354 | } |
| 355 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 356 | static int pcu_rx_data_ind_bcch(struct gprs_rlcmac_bts *bts, uint8_t *data, uint8_t len) |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 357 | { |
Pau Espin Pedrol | 86f4c09 | 2021-06-08 18:53:40 +0200 | [diff] [blame] | 358 | struct gsm48_system_information_type_2 *si2; |
Pau Espin Pedrol | fe8de45 | 2021-02-09 18:47:34 +0100 | [diff] [blame] | 359 | const uint8_t *si_ro; |
Pau Espin Pedrol | 86f4c09 | 2021-06-08 18:53:40 +0200 | [diff] [blame] | 360 | |
Philipp Maier | a58ec61 | 2021-01-25 23:43:52 +0100 | [diff] [blame] | 361 | switch (len) { |
| 362 | case 0: |
| 363 | /* Due to historical reasons also accept a completely empty message as |
| 364 | * revoke command for SI13. */ |
| 365 | LOGP(DL1IF, LOGL_ERROR, |
| 366 | "Received PCU data indication that contains no data -- Revoked SI13.\n"); |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 367 | bts->si13_is_set = false; |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 368 | |
Philipp Maier | a58ec61 | 2021-01-25 23:43:52 +0100 | [diff] [blame] | 369 | return 0; |
| 370 | case 1: |
| 371 | /* Revoke SI, type is identified by a single byte which is coded after |
| 372 | * enum osmo_sysinfo_type. */ |
| 373 | switch (data[0]) { |
| 374 | case SYSINFO_TYPE_1: |
| 375 | bts->si1_is_set = false; |
| 376 | break; |
Pau Espin Pedrol | 86f4c09 | 2021-06-08 18:53:40 +0200 | [diff] [blame] | 377 | case SYSINFO_TYPE_2: |
| 378 | bts->si2_is_set = false; |
| 379 | break; |
Philipp Maier | a58ec61 | 2021-01-25 23:43:52 +0100 | [diff] [blame] | 380 | case SYSINFO_TYPE_3: |
| 381 | bts->si3_is_set = false; |
| 382 | break; |
| 383 | case SYSINFO_TYPE_13: |
| 384 | bts->si13_is_set = false; |
| 385 | break; |
| 386 | default: |
| 387 | LOGP(DL1IF, LOGL_ERROR, |
| 388 | "Received PCU data indication that contains an unsupported system information identifier (%02x,OSMO) -- ignored.\n", data[0]); |
| 389 | return -EINVAL; |
| 390 | } |
| 391 | LOGP(DPCU, LOGL_DEBUG, |
| 392 | "Received PCU data indication: Revoked SI%s\n", |
| 393 | get_value_string(osmo_sitype_strs, data[0])); |
| 394 | return 0; |
| 395 | case GSM_MACBLOCK_LEN: |
| 396 | /* Update SI, type is identified by the RR sysinfo type, which is the |
| 397 | * 3rd byte in the buffer. */ |
| 398 | switch (data[2]) { |
| 399 | case GSM48_MT_RR_SYSINFO_1: |
| 400 | memcpy(bts->si1, data, GSM_MACBLOCK_LEN); |
| 401 | bts->si1_is_set = true; |
| 402 | break; |
Pau Espin Pedrol | 86f4c09 | 2021-06-08 18:53:40 +0200 | [diff] [blame] | 403 | case GSM48_MT_RR_SYSINFO_2: |
| 404 | memcpy(bts->si2, data, GSM_MACBLOCK_LEN); |
| 405 | bts->si2_is_set = true; |
| 406 | si2 = (struct gsm48_system_information_type_2 *)bts->si2; |
| 407 | gsm48_decode_freq_list(bts->si2_bcch_cell_list, si2->bcch_frequency_list, |
| 408 | sizeof(si2->bcch_frequency_list), 0xce, 1); |
| 409 | list_arfcn(bts, bts->si2_bcch_cell_list, "SI2 Neighbour cells in same band:"); |
| 410 | break; |
Philipp Maier | a58ec61 | 2021-01-25 23:43:52 +0100 | [diff] [blame] | 411 | case GSM48_MT_RR_SYSINFO_3: |
| 412 | memcpy(bts->si3, data, GSM_MACBLOCK_LEN); |
| 413 | bts->si3_is_set = true; |
| 414 | break; |
| 415 | case GSM48_MT_RR_SYSINFO_13: |
| 416 | memcpy(bts->si13, data, GSM_MACBLOCK_LEN); |
| 417 | bts->si13_is_set = true; |
Pau Espin Pedrol | fe8de45 | 2021-02-09 18:47:34 +0100 | [diff] [blame] | 418 | si_ro = ((struct gsm48_system_information_type_13*)data)->rest_octets; |
Pau Espin Pedrol | d65bd9d | 2021-06-01 16:43:41 +0200 | [diff] [blame] | 419 | if (osmo_gsm48_rest_octets_si13_decode(&bts->si13_ro_decoded, si_ro) < 0) |
Pau Espin Pedrol | fe8de45 | 2021-02-09 18:47:34 +0100 | [diff] [blame] | 420 | LOGP(DPCU, LOGL_ERROR, "Error decoding SI13\n"); |
Philipp Maier | a58ec61 | 2021-01-25 23:43:52 +0100 | [diff] [blame] | 421 | break; |
| 422 | default: |
| 423 | LOGP(DL1IF, LOGL_ERROR, |
| 424 | "Received PCU data indication that contains an unsupported system information identifier (%02x,RR) -- ignored.\n", data[2]); |
| 425 | return -EINVAL; |
| 426 | } |
| 427 | LOGP(DPCU, LOGL_DEBUG, |
| 428 | "Received PCU data indication: Updated %s: %s\n", |
| 429 | gsm48_pdisc_msgtype_name(data[1], data[2]), |
| 430 | osmo_hexdump_nospc(data + 1, GSM_MACBLOCK_LEN)); |
| 431 | return 0; |
| 432 | default: |
| 433 | LOGP(DL1IF, LOGL_ERROR, |
| 434 | "Received PCU data indication with unexpected data length: %u -- ignored.\n", |
| 435 | len); |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 436 | return -EINVAL; |
| 437 | } |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 438 | } |
| 439 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 440 | static int pcu_rx_data_ind(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_data *data_ind) |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 441 | { |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 442 | int rc; |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 443 | int current_fn = bts_current_frame_number(bts); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 444 | struct pcu_l1_meas meas = {0}; |
Pau Espin Pedrol | c1f31c4 | 2021-03-09 14:50:14 +0100 | [diff] [blame] | 445 | struct gprs_rlcmac_pdch *pdch; |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 446 | uint8_t gsmtap_chantype; |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 447 | |
Pau Espin Pedrol | c1f31c4 | 2021-03-09 14:50:14 +0100 | [diff] [blame] | 448 | LOGP(DL1IF, LOGL_DEBUG, "(bts=%" PRIu8 ",trx=%" PRIu8 ",ts=%" PRIu8 ") FN=%u " |
| 449 | "Rx DATA.ind: sapi=%d arfcn=%d cur_fn=%d " |
| 450 | "block=%d data=%s\n", bts->nr, data_ind->trx_nr, data_ind->ts_nr, |
| 451 | data_ind->fn, data_ind->sapi, data_ind->arfcn, current_fn, |
| 452 | data_ind->block_nr, osmo_hexdump(data_ind->data, data_ind->len)); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 453 | |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 454 | switch (data_ind->sapi) { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 455 | case PCU_IF_SAPI_PDTCH: |
Pau Espin Pedrol | c1f31c4 | 2021-03-09 14:50:14 +0100 | [diff] [blame] | 456 | pdch = &bts->trx[data_ind->trx_nr].pdch[data_ind->ts_nr]; |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 457 | pcu_l1_meas_set_rssi(&meas, data_ind->rssi); |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 458 | /* convert BER to % value */ |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 459 | pcu_l1_meas_set_ber(&meas, data_ind->ber10k / 100); |
| 460 | pcu_l1_meas_set_bto(&meas, data_ind->ta_offs_qbits); |
| 461 | pcu_l1_meas_set_link_qual(&meas, data_ind->lqual_cb / 10); |
Vadim Yanitskiy | f17dfc0 | 2019-07-09 16:16:35 +0700 | [diff] [blame] | 462 | |
Pau Espin Pedrol | c1f31c4 | 2021-03-09 14:50:14 +0100 | [diff] [blame] | 463 | LOGPDCH(pdch, DL1IF, LOGL_DEBUG, "FN=%u Rx DATA.ind PDTCH: " |
| 464 | "BER10k = %d, BTO = %d, Q = %d\n", data_ind->fn, |
| 465 | data_ind->ber10k, data_ind->ta_offs_qbits, data_ind->lqual_cb); |
Vadim Yanitskiy | f17dfc0 | 2019-07-09 16:16:35 +0700 | [diff] [blame] | 466 | |
Pau Espin Pedrol | c1f31c4 | 2021-03-09 14:50:14 +0100 | [diff] [blame] | 467 | rc = pcu_rx_data_ind_pdtch(bts, pdch, data_ind->data, data_ind->len, |
| 468 | data_ind->fn, &meas); |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 469 | gsmtap_chantype = GSMTAP_CHANNEL_PDTCH; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 470 | break; |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 471 | case PCU_IF_SAPI_BCCH: |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 472 | rc = pcu_rx_data_ind_bcch(bts, data_ind->data, data_ind->len); |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 473 | gsmtap_chantype = GSMTAP_CHANNEL_BCCH; |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 474 | break; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 475 | default: |
Pau Espin Pedrol | c1f31c4 | 2021-03-09 14:50:14 +0100 | [diff] [blame] | 476 | LOGP(DL1IF, LOGL_ERROR, "(bts=%" PRIu8 ",trx=%" PRIu8 ",ts=%" PRIu8 ") " |
| 477 | "FN=%u Rx DATA.ind with unsupported sapi %d\n", |
| 478 | bts->nr, data_ind->trx_nr, data_ind->ts_nr, data_ind->fn, data_ind->sapi); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 479 | rc = -EINVAL; |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 480 | gsmtap_chantype = GSMTAP_CHANNEL_UNKNOWN; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 481 | } |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 482 | |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 483 | if (rc < 0 && (the_pcu->gsmtap_categ_mask & (1 <<PCU_GSMTAP_C_UL_UNKNOWN))) { |
| 484 | gsmtap_send(the_pcu->gsmtap, data_ind->arfcn | GSMTAP_ARFCN_F_UPLINK, data_ind->ts_nr, |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 485 | gsmtap_chantype, 0, data_ind->fn, meas.rssi, meas.link_qual, data_ind->data, data_ind->len); |
Harald Welte | 717cdf5 | 2017-07-21 21:56:23 +0200 | [diff] [blame] | 486 | } |
| 487 | |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 488 | return rc; |
| 489 | } |
| 490 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 491 | static int pcu_rx_data_cnf(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_data *data_cnf) |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 492 | { |
| 493 | int rc = 0; |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 494 | int current_fn = bts_current_frame_number(bts); |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 495 | |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 496 | LOGP(DL1IF, LOGL_DEBUG, "Data confirm received: sapi=%d fn=%d cur_fn=%d\n", |
| 497 | data_cnf->sapi, data_cnf->fn, current_fn); |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 498 | |
| 499 | switch (data_cnf->sapi) { |
| 500 | case PCU_IF_SAPI_PCH: |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 501 | if (data_cnf->data[2] == 0x3f) |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 502 | bts_rcv_imm_ass_cnf(bts, data_cnf->data, data_cnf->fn); |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 503 | break; |
| 504 | default: |
| 505 | LOGP(DL1IF, LOGL_ERROR, "Received PCU data confirm with " |
| 506 | "unsupported sapi %d\n", data_cnf->sapi); |
| 507 | rc = -EINVAL; |
| 508 | } |
| 509 | |
| 510 | return rc; |
| 511 | } |
| 512 | |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 513 | // FIXME: remove this, when changed from c++ to c. |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 514 | int pcu_rx_rts_req_pdtch(struct gprs_rlcmac_bts *bts, uint8_t trx, uint8_t ts, |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 515 | uint32_t fn, uint8_t block_nr) |
| 516 | { |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 517 | return gprs_rlcmac_rcv_rts_block(bts, |
Max | 878bd1f | 2016-07-20 13:05:05 +0200 | [diff] [blame] | 518 | trx, ts, fn, block_nr); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 519 | } |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 520 | int pcu_rx_rts_req_ptcch(struct gprs_rlcmac_bts *bts, uint8_t trx, uint8_t ts, |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 521 | uint32_t fn, uint8_t block_nr) |
| 522 | { |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 523 | struct gprs_rlcmac_pdch *pdch; |
| 524 | |
| 525 | /* Prevent buffer overflow */ |
| 526 | if (trx >= ARRAY_SIZE(bts->trx) || ts >= 8) |
| 527 | return -EINVAL; |
| 528 | |
| 529 | /* Make sure PDCH time-slot is enabled */ |
| 530 | pdch = &bts->trx[trx].pdch[ts]; |
| 531 | if (!pdch->m_is_enabled) |
| 532 | return -EAGAIN; |
| 533 | |
Pau Espin Pedrol | eeae776 | 2021-09-20 11:20:09 +0200 | [diff] [blame] | 534 | /* If there's no TBF attached to this PDCH, we can skip Tx of PTCCH |
| 535 | * since there's nothing worthy of being transmitted. This way BTS can |
| 536 | * identify idle blocks and send nothing or dumy blocks with reduced |
| 537 | * energy for the sake of energy saving. |
| 538 | */ |
| 539 | const unsigned num_tbfs = pdch->num_tbfs(GPRS_RLCMAC_DL_TBF) |
| 540 | + pdch->num_tbfs(GPRS_RLCMAC_UL_TBF); |
| 541 | bool skip_idle = (num_tbfs == 0); |
| 542 | #ifdef ENABLE_DIRECT_PHY |
| 543 | /* In DIRECT_PHY mode we want to always submit something to L1 in |
| 544 | * TRX0, since BTS is not preparing dummy bursts on idle TS for us: */ |
| 545 | skip_idle = skip_idle && trx != 0; |
| 546 | #endif |
| 547 | if (skip_idle) |
| 548 | return 0; |
| 549 | |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 550 | pcu_l1if_tx_ptcch(bts, trx, ts, bts->trx[trx].arfcn, fn, block_nr, |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 551 | pdch->ptcch_msg, GSM_MACBLOCK_LEN); |
| 552 | return 0; |
| 553 | } |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 554 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 555 | static int pcu_rx_rts_req(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_rts_req *rts_req) |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 556 | { |
| 557 | int rc = 0; |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 558 | int current_fn = bts_current_frame_number(bts); |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 559 | const struct gprs_rlcmac_pdch *pdch; |
| 560 | pdch = &bts->trx[rts_req->trx_nr].pdch[rts_req->ts_nr]; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 561 | |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 562 | LOGPDCH(pdch, DL1IF, LOGL_DEBUG, "FN=%u RX RTS.req: sapi=%d " |
| 563 | "arfcn=%d cur_fn=%d block=%d\n", rts_req->fn, |
| 564 | rts_req->sapi, rts_req->arfcn, current_fn, rts_req->block_nr); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 565 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 566 | switch (rts_req->sapi) { |
| 567 | case PCU_IF_SAPI_PDTCH: |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 568 | pcu_rx_rts_req_pdtch(bts, rts_req->trx_nr, rts_req->ts_nr, |
Max | 878bd1f | 2016-07-20 13:05:05 +0200 | [diff] [blame] | 569 | rts_req->fn, rts_req->block_nr); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 570 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 571 | case PCU_IF_SAPI_PTCCH: |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 572 | pcu_rx_rts_req_ptcch(bts, rts_req->trx_nr, rts_req->ts_nr, |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 573 | rts_req->fn, rts_req->block_nr); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 574 | break; |
| 575 | default: |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 576 | LOGP(DL1IF, LOGL_ERROR, "(bts=%u,trx=%u,ts=%u) FN=%u RX RTS.req with " |
| 577 | "unsupported sapi %d\n", bts->nr, rts_req->trx_nr, rts_req->ts_nr, |
| 578 | rts_req->fn, rts_req->sapi); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 579 | rc = -EINVAL; |
| 580 | } |
| 581 | |
| 582 | return rc; |
| 583 | } |
| 584 | |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 585 | /* C -> C++ adapter for direct DSP access code (e.g. osmo-bts-sysmo) */ |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 586 | extern "C" int pcu_rx_rach_ind_ptcch(struct gprs_rlcmac_bts *bts, uint8_t trx_nr, uint8_t ts_nr, uint32_t fn, int16_t qta) |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 587 | { |
Vadim Yanitskiy | a0a0b7f | 2020-05-21 19:55:46 +0700 | [diff] [blame] | 588 | struct rach_ind_params rip = { |
| 589 | /* The content of RA is not of interest on PTCCH/U */ |
| 590 | .burst_type = GSM_L1_BURST_TYPE_ACCESS_0, |
| 591 | .is_11bit = false, |
| 592 | .ra = 0x00, |
| 593 | .trx_nr = trx_nr, |
| 594 | .ts_nr = ts_nr, |
| 595 | .rfn = fn, |
| 596 | .qta = qta, |
| 597 | }; |
| 598 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 599 | return bts_rcv_ptcch_rach(bts, &rip); |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 600 | } |
| 601 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 602 | static int pcu_rx_rach_ind(struct gprs_rlcmac_bts *bts, const struct gsm_pcu_if_rach_ind *rach_ind) |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 603 | { |
| 604 | int rc = 0; |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 605 | int current_fn = bts_current_frame_number(bts); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 606 | |
| 607 | LOGP(DL1IF, LOGL_INFO, "RACH request received: sapi=%d " |
Vadim Yanitskiy | b30f28f | 2020-03-29 19:01:58 +0700 | [diff] [blame] | 608 | "qta=%d, ra=0x%02x, fn=%u, cur_fn=%d, is_11bit=%d\n", rach_ind->sapi, rach_ind->qta, |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 609 | rach_ind->ra, rach_ind->fn, current_fn, rach_ind->is_11bit); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 610 | |
Vadim Yanitskiy | a0a0b7f | 2020-05-21 19:55:46 +0700 | [diff] [blame] | 611 | struct rach_ind_params rip = { |
| 612 | .burst_type = (enum ph_burst_type) rach_ind->burst_type, |
| 613 | .is_11bit = rach_ind->is_11bit > 0, |
| 614 | .ra = rach_ind->ra, |
| 615 | .trx_nr = rach_ind->trx_nr, |
| 616 | .ts_nr = rach_ind->ts_nr, |
| 617 | .rfn = rach_ind->fn, |
| 618 | .qta = rach_ind->qta, |
| 619 | }; |
| 620 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 621 | switch (rach_ind->sapi) { |
| 622 | case PCU_IF_SAPI_RACH: |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 623 | rc = bts_rcv_rach(bts, &rip); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 624 | break; |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 625 | case PCU_IF_SAPI_PTCCH: |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 626 | rc = bts_rcv_ptcch_rach(bts, &rip); |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 627 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 628 | default: |
| 629 | LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with " |
| 630 | "unsupported sapi %d\n", rach_ind->sapi); |
| 631 | rc = -EINVAL; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 632 | } |
| 633 | |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 634 | return rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 635 | } |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 636 | |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 637 | static int pcu_info_ind_ns(struct gprs_rlcmac_bts *bts, |
| 638 | const struct gsm_pcu_if_info_ind *info_ind) |
| 639 | { |
| 640 | struct osmo_sockaddr remote[PCU_IF_NUM_NSVC] = { }; |
| 641 | struct osmo_sockaddr local[PCU_IF_NUM_NSVC] = { }; |
| 642 | uint16_t nsvci[PCU_IF_NUM_NSVC] = { }; |
| 643 | uint16_t valid = 0; |
| 644 | |
| 645 | for (unsigned int i = 0; i < PCU_IF_NUM_NSVC; i++) { |
| 646 | struct osmo_sockaddr_str sockstr; |
| 647 | |
| 648 | switch (info_ind->address_type[i]) { |
| 649 | case PCU_IF_ADDR_TYPE_IPV4: |
| 650 | local[i].u.sin.sin_family = AF_INET; |
| 651 | local[i].u.sin.sin_addr.s_addr = INADDR_ANY; |
| 652 | local[i].u.sin.sin_port = htons(info_ind->local_port[i]); |
| 653 | |
| 654 | remote[i].u.sin.sin_family = AF_INET; |
Alexander Couzens | 87c6dd3 | 2020-10-27 13:24:40 +0100 | [diff] [blame] | 655 | memcpy(&remote[i].u.sin.sin_addr, &info_ind->remote_ip[i].v4, |
| 656 | sizeof(struct in_addr)); |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 657 | remote[i].u.sin.sin_port = htons(info_ind->remote_port[i]); |
| 658 | break; |
| 659 | case PCU_IF_ADDR_TYPE_IPV6: |
| 660 | local[i].u.sin6.sin6_family = AF_INET6; |
| 661 | local[i].u.sin6.sin6_addr = in6addr_any; |
| 662 | local[i].u.sin6.sin6_port = htons(info_ind->local_port[i]); |
| 663 | |
| 664 | remote[i].u.sin6.sin6_family = AF_INET6; |
Alexander Couzens | 87c6dd3 | 2020-10-27 13:24:40 +0100 | [diff] [blame] | 665 | memcpy(&remote[i].u.sin6.sin6_addr, |
| 666 | &info_ind->remote_ip[i].v6, |
| 667 | sizeof(struct in6_addr)); |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 668 | remote[i].u.sin6.sin6_port = htons(info_ind->remote_port[i]); |
| 669 | break; |
| 670 | default: |
| 671 | continue; |
| 672 | } |
| 673 | nsvci[i] = info_ind->nsvci[i]; |
| 674 | |
| 675 | LOGP(DL1IF, LOGL_DEBUG, " NS%u nsvci=%u\n", i, nsvci[i]); |
| 676 | if (osmo_sockaddr_str_from_sockaddr(&sockstr, &remote[i].u.sas)) |
| 677 | strcpy(sockstr.ip, "invalid"); |
| 678 | |
| 679 | LOGP(DL1IF, LOGL_DEBUG, " NS%u address: r=%s:%u<->l=NULL:%u\n", |
| 680 | i, sockstr.ip, sockstr.port, info_ind->local_port[i]); |
| 681 | |
| 682 | valid |= 1 << i; |
| 683 | } |
| 684 | |
| 685 | if (valid == 0) { |
| 686 | LOGP(DL1IF, LOGL_ERROR, "No NSVC available to connect to the SGSN!\n"); |
| 687 | return -EINVAL; |
| 688 | } |
| 689 | |
Alexander Couzens | 94a367f | 2021-02-16 16:57:15 +0100 | [diff] [blame] | 690 | return gprs_ns_update_config(bts, info_ind->nsei, local, remote, nsvci, valid); |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 691 | } |
| 692 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 693 | static int pcu_rx_info_ind(struct gprs_rlcmac_bts *bts, const struct gsm_pcu_if_info_ind *info_ind) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 694 | { |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 695 | struct gprs_bssgp_pcu *pcu; |
Harald Welte | bb47d95 | 2016-11-17 18:40:02 +0100 | [diff] [blame] | 696 | int rc = 0; |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 697 | unsigned int trx_nr, ts_nr; |
Pau Espin Pedrol | d87722d | 2020-10-30 17:14:26 +0100 | [diff] [blame] | 698 | unsigned int i; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 699 | |
Andreas Eversberg | 8389fd0 | 2012-07-18 10:06:48 +0200 | [diff] [blame] | 700 | if (info_ind->version != PCU_IF_VERSION) { |
Vadim Yanitskiy | fad2128 | 2020-07-19 02:05:33 +0700 | [diff] [blame] | 701 | fprintf(stderr, "PCU interface version number of BTS (%u) is " |
| 702 | "different (%u).\nPlease re-compile!\n", |
Andreas Eversberg | 8389fd0 | 2012-07-18 10:06:48 +0200 | [diff] [blame] | 703 | info_ind->version, PCU_IF_VERSION); |
| 704 | exit(-1); |
| 705 | } |
| 706 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 707 | LOGP(DL1IF, LOGL_DEBUG, "Info indication received:\n"); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 708 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 709 | if (!(info_ind->flags & PCU_IF_FLAG_ACTIVE)) { |
| 710 | LOGP(DL1IF, LOGL_NOTICE, "BTS not available\n"); |
Stefan Sperling | 5b22fb7 | 2018-02-14 19:46:33 +0100 | [diff] [blame] | 711 | if (!bts->active) |
| 712 | return -EAGAIN; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 713 | bssgp_failed: |
Stefan Sperling | 5b22fb7 | 2018-02-14 19:46:33 +0100 | [diff] [blame] | 714 | bts->active = false; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 715 | /* free all TBF */ |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 716 | for (trx_nr = 0; trx_nr < ARRAY_SIZE(bts->trx); trx_nr++) { |
| 717 | bts->trx[trx_nr].arfcn = info_ind->trx[trx_nr].arfcn; |
| 718 | for (ts_nr = 0; ts_nr < ARRAY_SIZE(bts->trx[0].pdch); ts_nr++) |
Pau Espin Pedrol | 4f67a9b | 2021-06-30 16:03:06 +0200 | [diff] [blame] | 719 | bts->trx[trx_nr].pdch[ts_nr].disable(); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 720 | } |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 721 | gprs_bssgp_destroy(bts); |
Daniel Willmann | 6d8884d | 2014-06-04 18:30:59 +0200 | [diff] [blame] | 722 | exit(0); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 723 | } |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 724 | LOGP(DL1IF, LOGL_INFO, "BTS available\n"); |
Neels Hofmeyr | bdc55fa | 2018-02-21 00:39:07 +0100 | [diff] [blame] | 725 | LOGP(DL1IF, LOGL_DEBUG, " mcc=%03u\n", info_ind->mcc); |
| 726 | LOGP(DL1IF, LOGL_DEBUG, " mnc=%0*u\n", info_ind->mnc_3_digits, info_ind->mnc); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 727 | LOGP(DL1IF, LOGL_DEBUG, " lac=%d\n", info_ind->lac); |
| 728 | LOGP(DL1IF, LOGL_DEBUG, " rac=%d\n", info_ind->rac); |
Harald Welte | 1473b37 | 2019-03-21 19:48:55 +0100 | [diff] [blame] | 729 | LOGP(DL1IF, LOGL_DEBUG, " cell_id=%d\n", info_ind->cell_id); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 730 | LOGP(DL1IF, LOGL_DEBUG, " bsic=%d\n", info_ind->bsic); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 731 | LOGP(DL1IF, LOGL_DEBUG, " nsei=%d\n", info_ind->nsei); |
| 732 | LOGP(DL1IF, LOGL_DEBUG, " nse_timer=%d %d %d %d %d %d %d\n", |
| 733 | info_ind->nse_timer[0], info_ind->nse_timer[1], |
| 734 | info_ind->nse_timer[2], info_ind->nse_timer[3], |
| 735 | info_ind->nse_timer[4], info_ind->nse_timer[5], |
| 736 | info_ind->nse_timer[6]); |
| 737 | LOGP(DL1IF, LOGL_DEBUG, " cell_timer=%d %d %d %d %d %d %d %d %d %d " |
| 738 | "%d\n", |
| 739 | info_ind->cell_timer[0], info_ind->cell_timer[1], |
| 740 | info_ind->cell_timer[2], info_ind->cell_timer[3], |
| 741 | info_ind->cell_timer[4], info_ind->cell_timer[5], |
| 742 | info_ind->cell_timer[6], info_ind->cell_timer[7], |
| 743 | info_ind->cell_timer[8], info_ind->cell_timer[9], |
| 744 | info_ind->cell_timer[10]); |
| 745 | LOGP(DL1IF, LOGL_DEBUG, " repeat_time=%d\n", info_ind->repeat_time); |
| 746 | LOGP(DL1IF, LOGL_DEBUG, " repeat_count=%d\n", info_ind->repeat_count); |
| 747 | LOGP(DL1IF, LOGL_DEBUG, " bvci=%d\n", info_ind->bvci); |
| 748 | LOGP(DL1IF, LOGL_DEBUG, " t3142=%d\n", info_ind->t3142); |
| 749 | LOGP(DL1IF, LOGL_DEBUG, " t3169=%d\n", info_ind->t3169); |
| 750 | LOGP(DL1IF, LOGL_DEBUG, " t3191=%d\n", info_ind->t3191); |
| 751 | LOGP(DL1IF, LOGL_DEBUG, " t3193=%d (ms)\n", info_ind->t3193_10ms * 10); |
| 752 | LOGP(DL1IF, LOGL_DEBUG, " t3195=%d\n", info_ind->t3195); |
| 753 | LOGP(DL1IF, LOGL_DEBUG, " n3101=%d\n", info_ind->n3101); |
| 754 | LOGP(DL1IF, LOGL_DEBUG, " n3103=%d\n", info_ind->n3103); |
| 755 | LOGP(DL1IF, LOGL_DEBUG, " n3105=%d\n", info_ind->n3105); |
| 756 | LOGP(DL1IF, LOGL_DEBUG, " cv_countdown=%d\n", info_ind->cv_countdown); |
| 757 | LOGP(DL1IF, LOGL_DEBUG, " dl_tbf_ext=%d\n", info_ind->dl_tbf_ext); |
| 758 | LOGP(DL1IF, LOGL_DEBUG, " ul_tbf_ext=%d\n", info_ind->ul_tbf_ext); |
Pau Espin Pedrol | 2e6b60d | 2021-01-20 13:48:31 +0100 | [diff] [blame] | 759 | bts->cgi_ps.rai.lac.plmn.mcc = info_ind->mcc; |
| 760 | bts->cgi_ps.rai.lac.plmn.mnc = info_ind->mnc; |
| 761 | bts->cgi_ps.rai.lac.plmn.mnc_3_digits = info_ind->mnc_3_digits; |
| 762 | bts->cgi_ps.rai.lac.lac = info_ind->lac; |
| 763 | bts->cgi_ps.rai.rac = info_ind->rac; |
| 764 | bts->cgi_ps.cell_identity = info_ind->cell_id; |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 765 | bts->bsic = info_ind->bsic; |
Pau Espin Pedrol | d87722d | 2020-10-30 17:14:26 +0100 | [diff] [blame] | 766 | |
| 767 | bts->cs_mask = 1 << 0; /* We need at least 1 CS, let's enable CS1 */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 768 | for (i = 0; i < 4; i++) { |
Pau Espin Pedrol | d87722d | 2020-10-30 17:14:26 +0100 | [diff] [blame] | 769 | uint8_t allowed = !!(info_ind->flags & (PCU_IF_FLAG_CS1 << i)); |
| 770 | bts->cs_mask |= allowed << i; |
| 771 | if (allowed) |
| 772 | LOGP(DL1IF, LOGL_DEBUG, " Use CS%d\n", i + 1); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 773 | } |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 774 | bts_recalc_max_cs(bts); |
Pau Espin Pedrol | d87722d | 2020-10-30 17:14:26 +0100 | [diff] [blame] | 775 | |
| 776 | bts->mcs_mask = 0; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 777 | for (i = 0; i < 9; i++) { |
Pau Espin Pedrol | d87722d | 2020-10-30 17:14:26 +0100 | [diff] [blame] | 778 | uint8_t allowed = !!(info_ind->flags & (PCU_IF_FLAG_MCS1 << i)); |
| 779 | bts->mcs_mask |= allowed << i; |
Pau Espin Pedrol | 87eec1f | 2020-10-30 18:46:24 +0100 | [diff] [blame] | 780 | if (allowed) |
Pau Espin Pedrol | d87722d | 2020-10-30 17:14:26 +0100 | [diff] [blame] | 781 | LOGP(DL1IF, LOGL_DEBUG, " Use MCS%d\n", i + 1); |
Pau Espin Pedrol | 87eec1f | 2020-10-30 18:46:24 +0100 | [diff] [blame] | 782 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 783 | } |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 784 | bts_recalc_max_mcs(bts); |
Pau Espin Pedrol | d87722d | 2020-10-30 17:14:26 +0100 | [diff] [blame] | 785 | |
Pau Espin Pedrol | b47b137 | 2020-11-03 15:59:39 +0100 | [diff] [blame] | 786 | LOGP(DL1IF, LOGL_DEBUG, " initial_cs=%u%s\n", info_ind->initial_cs, |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 787 | the_pcu->vty.force_initial_cs ? " (VTY forced, ignoring)" : ""); |
Pau Espin Pedrol | 793583e | 2021-01-14 16:20:57 +0100 | [diff] [blame] | 788 | bts->pcuif_info_ind.initial_cs = info_ind->initial_cs; |
| 789 | bts_recalc_initial_cs(bts); |
Pau Espin Pedrol | b47b137 | 2020-11-03 15:59:39 +0100 | [diff] [blame] | 790 | |
| 791 | LOGP(DL1IF, LOGL_DEBUG, " initial_mcs=%u%s\n", info_ind->initial_mcs, |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 792 | the_pcu->vty.force_initial_mcs ? " (VTY forced, ignoring)" : ""); |
Pau Espin Pedrol | 793583e | 2021-01-14 16:20:57 +0100 | [diff] [blame] | 793 | bts->pcuif_info_ind.initial_mcs = info_ind->initial_mcs; |
| 794 | bts_recalc_initial_mcs(bts); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 795 | |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 796 | pcu = gprs_bssgp_init( |
| 797 | bts, |
| 798 | info_ind->nsei, info_ind->bvci, |
| 799 | info_ind->mcc, info_ind->mnc, info_ind->mnc_3_digits, |
| 800 | info_ind->lac, info_ind->rac, info_ind->cell_id); |
| 801 | if (!pcu) { |
Vadim Yanitskiy | c1a726c | 2020-10-08 22:46:26 +0700 | [diff] [blame] | 802 | LOGP(DL1IF, LOGL_ERROR, "Failed to init BSSGP\n"); |
Alexander Couzens | 9b5c960 | 2020-07-28 13:47:18 +0200 | [diff] [blame] | 803 | goto bssgp_failed; |
| 804 | } |
| 805 | |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 806 | rc = pcu_info_ind_ns(pcu->bts, info_ind); |
| 807 | if (rc < 0) { |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 808 | LOGP(DL1IF, LOGL_ERROR, "No NSVC available to connect to the SGSN!\n"); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 809 | goto bssgp_failed; |
| 810 | } |
| 811 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 812 | if (info_ind->t3142) { /* if timer values are set */ |
Pau Espin Pedrol | 28f160e | 2019-09-05 14:48:35 +0200 | [diff] [blame] | 813 | osmo_tdef_set(bts->T_defs_bts, 3142, info_ind->t3142, OSMO_TDEF_S); |
| 814 | osmo_tdef_set(bts->T_defs_bts, 3169, info_ind->t3169, OSMO_TDEF_S); |
| 815 | osmo_tdef_set(bts->T_defs_bts, 3191, info_ind->t3191, OSMO_TDEF_S); |
| 816 | osmo_tdef_set(bts->T_defs_bts, 3193, info_ind->t3193_10ms * 10, OSMO_TDEF_MS); |
| 817 | osmo_tdef_set(bts->T_defs_bts, 3195, info_ind->t3195, OSMO_TDEF_S); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 818 | bts->n3101 = info_ind->n3101; |
| 819 | bts->n3103 = info_ind->n3103; |
| 820 | bts->n3105 = info_ind->n3105; |
| 821 | } |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 822 | |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 823 | for (trx_nr = 0; trx_nr < ARRAY_SIZE(bts->trx); trx_nr++) { |
| 824 | bts->trx[trx_nr].arfcn = info_ind->trx[trx_nr].arfcn; |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 825 | if ((info_ind->flags & PCU_IF_FLAG_SYSMO) |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 826 | && info_ind->trx[trx_nr].hlayer1) { |
Max | cad867e | 2016-04-21 14:35:55 +0200 | [diff] [blame] | 827 | #ifdef ENABLE_DIRECT_PHY |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 828 | LOGP(DL1IF, LOGL_DEBUG, " TRX %d hlayer1=%x\n", trx_nr, |
| 829 | info_ind->trx[trx_nr].hlayer1); |
| 830 | if (!bts->trx[trx_nr].fl1h) |
| 831 | bts->trx[trx_nr].fl1h = l1if_open_pdch( |
| 832 | trx_nr, |
| 833 | info_ind->trx[trx_nr].hlayer1, |
Pau Espin Pedrol | ac3fd12 | 2021-01-13 18:54:38 +0100 | [diff] [blame] | 834 | the_pcu->gsmtap); |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 835 | if (!bts->trx[trx_nr].fl1h) { |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 836 | LOGP(DL1IF, LOGL_FATAL, "Failed to open direct " |
| 837 | "DSP access for PDCH.\n"); |
| 838 | exit(0); |
| 839 | } |
| 840 | #else |
| 841 | LOGP(DL1IF, LOGL_FATAL, "Compiled without direct DSP " |
| 842 | "access for PDCH, but enabled at " |
| 843 | "BTS. Please deactivate it!\n"); |
| 844 | exit(0); |
| 845 | #endif |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 846 | } |
| 847 | |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 848 | for (ts_nr = 0; ts_nr < ARRAY_SIZE(bts->trx[0].pdch); ts_nr++) { |
Vadim Yanitskiy | 8e2bd1e | 2020-07-21 00:54:42 +0700 | [diff] [blame] | 849 | const struct gsm_pcu_if_info_ts *its = &info_ind->trx[trx_nr].ts[ts_nr]; |
Vadim Yanitskiy | 0f41b71 | 2020-07-24 01:28:13 +0700 | [diff] [blame] | 850 | struct gprs_rlcmac_pdch *pdch = &bts->trx[trx_nr].pdch[ts_nr]; |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 851 | if ((info_ind->trx[trx_nr].pdch_mask & (1 << ts_nr))) { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 852 | /* FIXME: activate dynamically at RLCMAC */ |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 853 | if (!pdch->is_enabled()) { |
Max | cad867e | 2016-04-21 14:35:55 +0200 | [diff] [blame] | 854 | #ifdef ENABLE_DIRECT_PHY |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 855 | if ((info_ind->flags & |
| 856 | PCU_IF_FLAG_SYSMO)) |
| 857 | l1if_connect_pdch( |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 858 | bts->trx[trx_nr].fl1h, ts_nr); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 859 | #endif |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 860 | pcu_tx_act_req(bts, pdch, 1); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 861 | pdch->enable(); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 862 | } |
Vadim Yanitskiy | 8e2bd1e | 2020-07-21 00:54:42 +0700 | [diff] [blame] | 863 | |
| 864 | pdch->tsc = its->tsc; |
| 865 | |
| 866 | /* (Optional) frequency hopping parameters */ |
| 867 | if (its->h) { |
| 868 | pdch->fh.enabled = true; |
| 869 | pdch->fh.maio = its->maio; |
| 870 | pdch->fh.hsn = its->hsn; |
| 871 | |
| 872 | OSMO_ASSERT(its->ma_bit_len <= sizeof(pdch->fh.ma) * 8); |
| 873 | pdch->fh.ma_oct_len = OSMO_BYTES_FOR_BITS(its->ma_bit_len); |
| 874 | pdch->fh.ma_bit_len = its->ma_bit_len; |
| 875 | |
| 876 | /* Mobile Allocation + padding (byte/bit order as on the wire): |
| 877 | * | 00 00 00 00 00 cc bb aa | -> | cc bb aa 00 00 00 00 00 | */ |
| 878 | unsigned int offset = sizeof(pdch->fh.ma) - pdch->fh.ma_oct_len; |
| 879 | memcpy(pdch->fh.ma, its->ma + offset, pdch->fh.ma_oct_len); |
| 880 | } |
| 881 | |
| 882 | LOGP(DL1IF, LOGL_INFO, "PDCH (trx=%u, ts=%u): tsc=%u, hopping=%s\n", |
| 883 | trx_nr, ts_nr, pdch->tsc, pdch->fh.enabled ? "yes" : "no"); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 884 | } else { |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 885 | if (pdch->is_enabled()) { |
Pau Espin Pedrol | df58ddf | 2021-03-09 16:19:22 +0100 | [diff] [blame] | 886 | pcu_tx_act_req(bts, pdch, 0); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 887 | pdch->disable(); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 888 | } |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 889 | } |
| 890 | } |
| 891 | } |
| 892 | |
Stefan Sperling | 5b22fb7 | 2018-02-14 19:46:33 +0100 | [diff] [blame] | 893 | bts->active = true; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 894 | return rc; |
| 895 | } |
| 896 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 897 | static int pcu_rx_time_ind(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_time_ind *time_ind) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 898 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 899 | uint8_t fn13 = time_ind->fn % 13; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 900 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 901 | /* omit frame numbers not starting at a MAC block */ |
| 902 | if (fn13 != 0 && fn13 != 4 && fn13 != 8) |
| 903 | return 0; |
Max | 3741f14 | 2017-06-26 12:10:12 +0200 | [diff] [blame] | 904 | |
| 905 | LOGP(DL1IF, LOGL_DEBUG, "Time indication received: %d\n", time_ind->fn % 52); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 906 | |
Pau Espin Pedrol | 3061711 | 2021-03-05 18:59:05 +0100 | [diff] [blame] | 907 | /* Ignore TIME.ind completely, we nowadays relay on DATA.ind always |
| 908 | * providing all block FNs. */ |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 909 | return 0; |
| 910 | } |
| 911 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 912 | static int pcu_rx_pag_req(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_pag_req *pag_req) |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 913 | { |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 914 | struct osmo_mobile_identity mi; |
Pau Espin Pedrol | bd54205 | 2021-05-13 17:44:51 +0200 | [diff] [blame] | 915 | struct GprsMs *ms = NULL; |
| 916 | struct paging_req_cs req = { .chan_needed = pag_req->chan_needed, |
| 917 | .tlli = GSM_RESERVED_TMSI }; |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 918 | int rc; |
| 919 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 920 | LOGP(DL1IF, LOGL_DEBUG, "Paging request received: chan_needed=%d " |
| 921 | "length=%d\n", pag_req->chan_needed, pag_req->identity_lv[0]); |
| 922 | |
Pau Espin Pedrol | 32499b6 | 2019-12-09 13:55:12 +0100 | [diff] [blame] | 923 | /* check if identity does not fit: length > sizeof(lv) - 1 */ |
| 924 | if (pag_req->identity_lv[0] >= sizeof(pag_req->identity_lv)) { |
| 925 | LOGP(DL1IF, LOGL_ERROR, "Paging identity too large (%" PRIu8 ")\n", |
| 926 | pag_req->identity_lv[0]); |
| 927 | return -EINVAL; |
| 928 | } |
| 929 | |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 930 | rc = osmo_mobile_identity_decode(&mi, &pag_req->identity_lv[1], pag_req->identity_lv[0], true); |
| 931 | if (rc < 0) { |
| 932 | LOGP(DL1IF, LOGL_ERROR, "Failed to decode Mobile Identity in Paging Request (rc=%d)\n", rc); |
| 933 | return -EINVAL; |
| 934 | } |
| 935 | |
Pau Espin Pedrol | bd54205 | 2021-05-13 17:44:51 +0200 | [diff] [blame] | 936 | switch (mi.type) { |
| 937 | case GSM_MI_TYPE_TMSI: |
| 938 | req.mi_tmsi = mi; |
| 939 | req.mi_tmsi_present = true; |
| 940 | /* TODO: look up MS by TMSI? Derive TLLI? */ |
| 941 | break; |
| 942 | case GSM_MI_TYPE_IMSI: |
| 943 | req.mi_imsi = mi; |
| 944 | req.mi_imsi_present = true; |
| 945 | ms = bts_ms_by_imsi(bts, req.mi_imsi.imsi); |
| 946 | break; |
| 947 | default: |
| 948 | LOGP(DL1IF, LOGL_ERROR, "Unexpected MI type %u\n", mi.type); |
| 949 | return -EINVAL; |
| 950 | } |
| 951 | |
| 952 | return bts_add_paging(bts, &req, ms); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 953 | } |
| 954 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 955 | static int pcu_rx_susp_req(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_susp_req *susp_req) |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 956 | { |
Philipp Maier | a58ec61 | 2021-01-25 23:43:52 +0100 | [diff] [blame] | 957 | struct bssgp_bvc_ctx *bctx = the_pcu->bssgp.bctx; |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 958 | GprsMs *ms; |
| 959 | struct gprs_rlcmac_dl_tbf *dl_tbf; |
| 960 | struct gprs_rlcmac_ul_tbf *ul_tbf; |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 961 | struct gprs_ra_id ra_id; |
| 962 | |
| 963 | gsm48_parse_ra(&ra_id, susp_req->ra_id); |
| 964 | |
| 965 | LOGP(DL1IF, LOGL_INFO, "GPRS Suspend request received: TLLI=0x%08x RAI=%s\n", |
| 966 | susp_req->tlli, osmo_rai_name(&ra_id)); |
| 967 | |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 968 | if ((ms = bts_ms_store(bts)->get_ms(susp_req->tlli))) { |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 969 | /* We need to catch both pointers here since MS may become freed |
| 970 | after first tbf_free(dl_tbf) if only DL TBF was available */ |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 971 | dl_tbf = ms_dl_tbf(ms); |
| 972 | ul_tbf = ms_ul_tbf(ms); |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 973 | if (dl_tbf) |
| 974 | tbf_free(dl_tbf); |
| 975 | if (ul_tbf) |
| 976 | tbf_free(ul_tbf); |
| 977 | } |
| 978 | |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 979 | if (!bctx) |
| 980 | return -1; |
| 981 | |
| 982 | return bssgp_tx_suspend(bctx->nsei, susp_req->tlli, &ra_id); |
| 983 | } |
| 984 | |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 985 | static int pcu_rx_app_info_req(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_app_info_req *app_info_req) |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 986 | { |
Pau Espin Pedrol | 54faf02 | 2021-01-14 12:12:43 +0100 | [diff] [blame] | 987 | struct llist_head *tmp; |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 988 | |
| 989 | LOGP(DL1IF, LOGL_DEBUG, "Application Information Request received: type=0x%08x len=%i\n", |
| 990 | app_info_req->application_type, app_info_req->len); |
| 991 | |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 992 | bts->app_info_pending = 0; |
Pau Espin Pedrol | 2182e62 | 2021-01-14 16:48:38 +0100 | [diff] [blame] | 993 | llist_for_each(tmp, bts_ms_store(bts)->ms_list()) { |
Pau Espin Pedrol | 54faf02 | 2021-01-14 12:12:43 +0100 | [diff] [blame] | 994 | GprsMs *ms = llist_entry(tmp, typeof(*ms), list); |
Pau Espin Pedrol | da971ee | 2020-12-16 15:59:45 +0100 | [diff] [blame] | 995 | if (!ms_dl_tbf(ms)) |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 996 | continue; |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 997 | bts->app_info_pending++; |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 998 | ms->app_info_pending = true; |
| 999 | } |
| 1000 | |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 1001 | if (!bts->app_info_pending) { |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 1002 | LOGP(DL1IF, LOGL_NOTICE, "Packet Application Information will not be sent, no subscribers with active" |
| 1003 | " TBF\n"); |
| 1004 | return -1; |
| 1005 | } |
| 1006 | |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 1007 | if (bts->app_info) { |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 1008 | LOGP(DL1IF, LOGL_NOTICE, "Previous Packet Application Information was not sent to all subscribers," |
| 1009 | " overwriting with new one\n"); |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 1010 | msgb_free(bts->app_info); |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | LOGP(DL1IF, LOGL_INFO, "Sending Packet Application Information to %i subscribers with active TBF\n", |
Pau Espin Pedrol | 0ece97d | 2021-01-18 12:53:54 +0100 | [diff] [blame] | 1014 | bts->app_info_pending); |
| 1015 | bts->app_info = gprs_rlcmac_app_info_msg(app_info_req); |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 1016 | return 0; |
| 1017 | } |
| 1018 | |
Pau Espin Pedrol | 5557c0a | 2021-09-07 14:09:50 +0200 | [diff] [blame] | 1019 | static int pcu_rx_neigh_addr_cnf(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_neigh_addr_cnf *naddr_cnf) |
| 1020 | { |
| 1021 | struct llist_head *tmp; |
| 1022 | struct osmo_cell_global_id_ps cgi_ps; |
| 1023 | struct osmo_cell_global_id_ps *cgi_ps_ptr = &cgi_ps; |
| 1024 | |
| 1025 | struct neigh_cache_entry_key neigh_key = { |
| 1026 | .local_lac = osmo_load16be(&naddr_cnf->orig_req.local_lac), |
| 1027 | .local_ci = osmo_load16be(&naddr_cnf->orig_req.local_ci), |
| 1028 | .tgt_arfcn = osmo_load16be(&naddr_cnf->orig_req.tgt_arfcn), |
| 1029 | .tgt_bsic = naddr_cnf->orig_req.tgt_bsic, |
| 1030 | }; |
| 1031 | |
| 1032 | if (naddr_cnf->err_code == 0) { |
| 1033 | cgi_ps.rai.lac.plmn.mcc = osmo_load16be(&naddr_cnf->cgi_ps.mcc); |
| 1034 | cgi_ps.rai.lac.plmn.mnc = osmo_load16be(&naddr_cnf->cgi_ps.mnc); |
| 1035 | cgi_ps.rai.lac.plmn.mnc_3_digits = naddr_cnf->cgi_ps.mnc_3_digits; |
| 1036 | cgi_ps.rai.lac.lac = osmo_load16be(&naddr_cnf->cgi_ps.lac); |
| 1037 | cgi_ps.rai.rac = naddr_cnf->cgi_ps.rac; |
| 1038 | cgi_ps.cell_identity = osmo_load16be(&naddr_cnf->cgi_ps.cell_identity); |
| 1039 | |
| 1040 | LOGP(DL1IF, LOGL_INFO, "Rx Neighbor Address Resolution Confirmation for " NEIGH_CACHE_ENTRY_KEY_FMT ": %s\n", |
| 1041 | NEIGH_CACHE_ENTRY_KEY_ARGS(&neigh_key), osmo_cgi_ps_name(&cgi_ps)); |
| 1042 | |
| 1043 | /* Cache the cgi_ps so we can avoid requesting again same resolution for a while */ |
| 1044 | neigh_cache_add(bts->pcu->neigh_cache, &neigh_key, &cgi_ps); |
| 1045 | } else { |
| 1046 | cgi_ps_ptr = NULL; |
| 1047 | LOGP(DL1IF, LOGL_INFO, "Rx Neighbor Address Resolution Confirmation for " NEIGH_CACHE_ENTRY_KEY_FMT ": failed with err_code=%u\n", |
| 1048 | NEIGH_CACHE_ENTRY_KEY_ARGS(&neigh_key), naddr_cnf->err_code); |
| 1049 | } |
| 1050 | |
| 1051 | llist_for_each(tmp, bts_ms_store(bts)->ms_list()) { |
| 1052 | GprsMs *ms = llist_entry(tmp, typeof(*ms), list); |
| 1053 | if (ms->nacc && nacc_fsm_is_waiting_addr_resolution(ms->nacc, &neigh_key)) |
| 1054 | osmo_fsm_inst_dispatch(ms->nacc->fi, NACC_EV_RX_RAC_CI, cgi_ps_ptr); |
| 1055 | } |
| 1056 | return 0; |
| 1057 | } |
| 1058 | |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1059 | static int pcu_rx_container(struct gprs_rlcmac_bts *bts, struct gsm_pcu_if_container *container) |
| 1060 | { |
| 1061 | int rc; |
Pau Espin Pedrol | 5557c0a | 2021-09-07 14:09:50 +0200 | [diff] [blame] | 1062 | uint16_t data_length = osmo_load16be(&container->length); |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1063 | |
| 1064 | switch (container->msg_type) { |
Pau Espin Pedrol | 5557c0a | 2021-09-07 14:09:50 +0200 | [diff] [blame] | 1065 | case PCU_IF_MSG_NEIGH_ADDR_CNF: |
| 1066 | if (data_length < sizeof(struct gsm_pcu_if_neigh_addr_cnf)) { |
| 1067 | LOGP(DL1IF, LOGL_ERROR, "Rx container(NEIGH_ADDR_CNF) message too short: %u vs exp %zu\n", |
| 1068 | data_length, sizeof(struct gsm_pcu_if_neigh_addr_cnf)); |
| 1069 | return -EINVAL; |
| 1070 | } |
| 1071 | rc = pcu_rx_neigh_addr_cnf(bts, (struct gsm_pcu_if_neigh_addr_cnf*)&container->data); |
| 1072 | break; |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1073 | default: |
| 1074 | LOGP(DL1IF, LOGL_NOTICE, "(bts=%d) Rx unexpected msg type (%u) inside container!\n", |
| 1075 | bts->nr, container->msg_type); |
| 1076 | rc = -1; |
| 1077 | } |
| 1078 | return rc; |
| 1079 | } |
| 1080 | |
| 1081 | #define CHECK_IF_MSG_SIZE(prim_len, prim_msg) \ |
| 1082 | do { \ |
| 1083 | size_t _len = PCUIF_HDR_SIZE + sizeof(prim_msg); \ |
| 1084 | if (prim_len < _len) { \ |
| 1085 | LOGP(DL1IF, LOGL_ERROR, "Received %zu bytes on PCU Socket, but primitive %s " \ |
| 1086 | "size is %zu, discarding\n", prim_len, #prim_msg, _len); \ |
| 1087 | return -EINVAL; \ |
| 1088 | } \ |
| 1089 | } while(0); |
| 1090 | int pcu_rx(struct gsm_pcu_if *pcu_prim, size_t pcu_prim_length) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1091 | { |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1092 | int rc = 0; |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1093 | size_t exp_len; |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1094 | struct gprs_rlcmac_bts *bts = gprs_pcu_get_bts_by_nr(the_pcu, pcu_prim->bts_nr); |
| 1095 | if (!bts) { |
| 1096 | LOGP(DL1IF, LOGL_NOTICE, "Received message for new BTS%d\n", pcu_prim->bts_nr); |
| 1097 | bts = bts_alloc(the_pcu, pcu_prim->bts_nr); |
| 1098 | if (!bts) { |
| 1099 | LOGP(DL1IF, LOGL_ERROR, "Failed to create object for BTS%d!\n", pcu_prim->bts_nr); |
| 1100 | return -EAGAIN; |
| 1101 | } |
| 1102 | } |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1103 | |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1104 | switch (pcu_prim->msg_type) { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1105 | case PCU_IF_MSG_DATA_IND: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1106 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.data_ind); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1107 | rc = pcu_rx_data_ind(bts, &pcu_prim->u.data_ind); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1108 | break; |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 1109 | case PCU_IF_MSG_DATA_CNF: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1110 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.data_cnf); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1111 | rc = pcu_rx_data_cnf(bts, &pcu_prim->u.data_cnf); |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 1112 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1113 | case PCU_IF_MSG_RTS_REQ: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1114 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.rts_req); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1115 | rc = pcu_rx_rts_req(bts, &pcu_prim->u.rts_req); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1116 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1117 | case PCU_IF_MSG_RACH_IND: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1118 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.rach_ind); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1119 | rc = pcu_rx_rach_ind(bts, &pcu_prim->u.rach_ind); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1120 | break; |
| 1121 | case PCU_IF_MSG_INFO_IND: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1122 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.info_ind); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1123 | rc = pcu_rx_info_ind(bts, &pcu_prim->u.info_ind); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1124 | break; |
| 1125 | case PCU_IF_MSG_TIME_IND: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1126 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.time_ind); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1127 | rc = pcu_rx_time_ind(bts, &pcu_prim->u.time_ind); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1128 | break; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1129 | case PCU_IF_MSG_PAG_REQ: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1130 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.pag_req); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1131 | rc = pcu_rx_pag_req(bts, &pcu_prim->u.pag_req); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1132 | break; |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 1133 | case PCU_IF_MSG_SUSP_REQ: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1134 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.susp_req); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1135 | rc = pcu_rx_susp_req(bts, &pcu_prim->u.susp_req); |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 1136 | break; |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 1137 | case PCU_IF_MSG_APP_INFO_REQ: |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1138 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.app_info_req); |
Pau Espin Pedrol | d1049dc | 2021-01-18 17:14:14 +0100 | [diff] [blame] | 1139 | rc = pcu_rx_app_info_req(bts, &pcu_prim->u.app_info_req); |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 1140 | break; |
Vadim Yanitskiy | b657213 | 2021-06-20 21:05:24 +0200 | [diff] [blame] | 1141 | case PCU_IF_MSG_INTERF_IND: |
| 1142 | /* TODO: handle interference reports */ |
| 1143 | break; |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1144 | case PCU_IF_MSG_CONTAINER: |
| 1145 | CHECK_IF_MSG_SIZE(pcu_prim_length, pcu_prim->u.container); |
| 1146 | /* ^ check if we can access container fields, v check with container data length */ |
| 1147 | exp_len = PCUIF_HDR_SIZE + sizeof(pcu_prim->u.container) + osmo_load16be(&pcu_prim->u.container.length); |
| 1148 | if (pcu_prim_length < exp_len) { |
| 1149 | LOGP(DL1IF, LOGL_ERROR, "Received %zu bytes on PCU Socket, but primitive container size" \ |
| 1150 | "is %zu, discarding\n", pcu_prim_length, exp_len); |
| 1151 | } |
| 1152 | rc = pcu_rx_container(bts, &pcu_prim->u.container); |
| 1153 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1154 | default: |
Thorsten Alteholz | 8bb7904 | 2018-10-06 10:42:58 +0200 | [diff] [blame] | 1155 | LOGP(DL1IF, LOGL_ERROR, "Received unknown PCU msg type %d\n", |
Pau Espin Pedrol | 1989a19 | 2021-06-23 19:46:07 +0200 | [diff] [blame] | 1156 | pcu_prim->msg_type); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1157 | rc = -EINVAL; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1158 | } |
Philipp Maier | 8ccf704 | 2018-04-10 13:12:42 +0200 | [diff] [blame] | 1159 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1160 | return rc; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1161 | } |