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> |
| 42 | #include <osmocom/gsm/l1sap.h> |
| 43 | #include <osmocom/gsm/protocol/gsm_04_08.h> |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 44 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 45 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 46 | #include <gprs_rlcmac.h> |
| 47 | #include <pcu_l1_if.h> |
| 48 | #include <gprs_debug.h> |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 49 | #include <gprs_bssgp_pcu.h> |
Harald Welte | 68fc127 | 2016-11-16 22:48:33 +0100 | [diff] [blame] | 50 | #include <osmocom/pcu/pcuif_proto.h> |
Holger Hans Peter Freyther | 67ed34e | 2013-10-17 17:01:54 +0200 | [diff] [blame] | 51 | #include <bts.h> |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 52 | #include <pdch.h> |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 53 | #include <tbf_ul.h> |
| 54 | #include <tbf_dl.h> |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 55 | |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 56 | // FIXME: move this, when changed from c++ to c. |
| 57 | extern "C" { |
Max | 58b6646 | 2016-05-13 10:34:15 +0200 | [diff] [blame] | 58 | void *l1if_open_pdch(uint8_t trx_no, uint32_t hlayer1, |
| 59 | struct gsmtap_inst *gsmtap); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 60 | int l1if_connect_pdch(void *obj, uint8_t ts); |
| 61 | int l1if_pdch_req(void *obj, uint8_t ts, int is_ptcch, uint32_t fn, |
| 62 | uint16_t arfcn, uint8_t block_nr, uint8_t *data, uint8_t len); |
| 63 | } |
| 64 | |
Andreas Eversberg | e266bd4 | 2012-07-13 14:00:21 +0200 | [diff] [blame] | 65 | extern void *tall_pcu_ctx; |
| 66 | |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 67 | #define PAGING_GROUP_LEN 3 |
| 68 | |
| 69 | /* returns [0,999] on success, > 999 on error */ |
| 70 | uint16_t imsi2paging_group(const char* imsi) |
| 71 | { |
| 72 | uint16_t pgroup = 0; |
Vadim Yanitskiy | bd0b0b3 | 2020-01-16 00:25:48 +0700 | [diff] [blame] | 73 | size_t len; |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 74 | |
Vadim Yanitskiy | bd0b0b3 | 2020-01-16 00:25:48 +0700 | [diff] [blame] | 75 | len = (imsi != NULL) ? strlen(imsi) : 0; |
| 76 | if (len < PAGING_GROUP_LEN) |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 77 | return 0xFFFF; |
| 78 | imsi += len - PAGING_GROUP_LEN; |
| 79 | |
| 80 | while (*imsi != '\0') { |
| 81 | if (!isdigit(*imsi)) |
| 82 | return 0xFFFF; |
| 83 | pgroup *= 10; |
| 84 | pgroup += *imsi - '0'; |
| 85 | imsi++; |
| 86 | } |
| 87 | return pgroup; |
| 88 | } |
| 89 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 90 | /* |
| 91 | * PCU messages |
| 92 | */ |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 93 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 94 | struct msgb *pcu_msgb_alloc(uint8_t msg_type, uint8_t bts_nr) |
| 95 | { |
| 96 | struct msgb *msg; |
| 97 | struct gsm_pcu_if *pcu_prim; |
| 98 | |
| 99 | msg = msgb_alloc(sizeof(struct gsm_pcu_if), "pcu_sock_tx"); |
| 100 | if (!msg) |
| 101 | return NULL; |
| 102 | msgb_put(msg, sizeof(struct gsm_pcu_if)); |
| 103 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 104 | pcu_prim->msg_type = msg_type; |
| 105 | pcu_prim->bts_nr = bts_nr; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 106 | |
| 107 | return msg; |
| 108 | } |
| 109 | |
Max | 0a8fae8 | 2017-03-08 18:53:30 +0100 | [diff] [blame] | 110 | const struct value_string gsm_pcu_if_text_type_names[] = { |
| 111 | OSMO_VALUE_STRING(PCU_VERSION), |
| 112 | OSMO_VALUE_STRING(PCU_OML_ALERT), |
| 113 | { 0, NULL } |
| 114 | }; |
| 115 | |
| 116 | int pcu_tx_txt_ind(enum gsm_pcu_if_text_type t, const char *fmt, ...) |
| 117 | { |
| 118 | struct gsm_pcu_if *pcu_prim; |
| 119 | struct gsm_pcu_if_txt_ind *txt; |
| 120 | va_list ap; |
| 121 | char *rep; |
| 122 | struct msgb *msg = pcu_msgb_alloc(PCU_IF_MSG_TXT_IND, 0); |
| 123 | if (!msg) |
| 124 | return -ENOMEM; |
| 125 | |
| 126 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 127 | txt = &pcu_prim->u.txt_ind; |
| 128 | txt->type = t; |
| 129 | |
| 130 | va_start(ap, fmt); |
| 131 | rep = talloc_vasprintf(tall_pcu_ctx, fmt, ap); |
| 132 | va_end(ap); |
| 133 | |
| 134 | if (!rep) |
| 135 | return -ENOMEM; |
| 136 | |
| 137 | osmo_strlcpy(txt->text, rep, TXT_MAX_LEN); |
| 138 | talloc_free(rep); |
| 139 | |
| 140 | LOGP(DL1IF, LOGL_INFO, "Sending %s TXT as %s to BTS\n", txt->text, |
| 141 | get_value_string(gsm_pcu_if_text_type_names, t)); |
| 142 | |
| 143 | return pcu_sock_send(msg); |
| 144 | } |
| 145 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 146 | static int pcu_tx_act_req(uint8_t trx, uint8_t ts, uint8_t activate) |
Ivan Kluchnikov | 4277f0c | 2012-04-12 14:24:35 +0400 | [diff] [blame] | 147 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 148 | struct msgb *msg; |
| 149 | struct gsm_pcu_if *pcu_prim; |
| 150 | struct gsm_pcu_if_act_req *act_req; |
| 151 | |
| 152 | LOGP(DL1IF, LOGL_INFO, "Sending %s request: trx=%d ts=%d\n", |
| 153 | (activate) ? "activate" : "deactivate", trx, ts); |
| 154 | |
| 155 | msg = pcu_msgb_alloc(PCU_IF_MSG_ACT_REQ, 0); |
| 156 | if (!msg) |
| 157 | return -ENOMEM; |
| 158 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 159 | act_req = &pcu_prim->u.act_req; |
| 160 | act_req->activate = activate; |
| 161 | act_req->trx_nr = trx; |
| 162 | act_req->ts_nr = ts; |
| 163 | |
| 164 | return pcu_sock_send(msg); |
| 165 | } |
| 166 | |
| 167 | static int pcu_tx_data_req(uint8_t trx, uint8_t ts, uint8_t sapi, |
| 168 | uint16_t arfcn, uint32_t fn, uint8_t block_nr, uint8_t *data, |
| 169 | uint8_t len) |
| 170 | { |
| 171 | struct msgb *msg; |
| 172 | struct gsm_pcu_if *pcu_prim; |
| 173 | struct gsm_pcu_if_data *data_req; |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 174 | int current_fn = get_current_fn(); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 175 | |
| 176 | LOGP(DL1IF, LOGL_DEBUG, "Sending data request: trx=%d ts=%d sapi=%d " |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 177 | "arfcn=%d fn=%d cur_fn=%d block=%d data=%s\n", trx, ts, sapi, arfcn, fn, current_fn, |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 178 | block_nr, osmo_hexdump(data, len)); |
| 179 | |
| 180 | msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_REQ, 0); |
| 181 | if (!msg) |
| 182 | return -ENOMEM; |
| 183 | pcu_prim = (struct gsm_pcu_if *) msg->data; |
| 184 | data_req = &pcu_prim->u.data_req; |
| 185 | |
| 186 | data_req->sapi = sapi; |
| 187 | data_req->fn = fn; |
| 188 | data_req->arfcn = arfcn; |
| 189 | data_req->trx_nr = trx; |
| 190 | data_req->ts_nr = ts; |
| 191 | data_req->block_nr = block_nr; |
| 192 | memcpy(data_req->data, data, len); |
| 193 | data_req->len = len; |
| 194 | |
| 195 | return pcu_sock_send(msg); |
| 196 | } |
| 197 | |
| 198 | void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, |
| 199 | uint32_t fn, uint8_t block_nr) |
| 200 | { |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 201 | #ifdef ENABLE_DIRECT_PHY |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 202 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 203 | |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 204 | if (bts->trx[trx].fl1h) { |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 205 | l1if_pdch_req(bts->trx[trx].fl1h, ts, 0, fn, arfcn, block_nr, |
| 206 | msg->data, msg->len); |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 207 | msgb_free(msg); |
| 208 | return; |
| 209 | } |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 210 | #endif |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 211 | pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr, |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 212 | msg->data, msg->len); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 213 | msgb_free(msg); |
Ivan Kluchnikov | 4277f0c | 2012-04-12 14:24:35 +0400 | [diff] [blame] | 214 | } |
| 215 | |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 216 | void pcu_l1if_tx_ptcch(uint8_t trx, uint8_t ts, uint16_t arfcn, |
| 217 | uint32_t fn, uint8_t block_nr, |
| 218 | uint8_t *data, size_t data_len) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 219 | { |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 220 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 221 | |
Harald Welte | b1be611 | 2017-08-17 00:49:23 +0200 | [diff] [blame] | 222 | if (bts->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_PTCCH)) |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 223 | gsmtap_send(bts->gsmtap, arfcn, ts, GSMTAP_CHANNEL_PTCCH, 0, fn, 0, 0, data, data_len); |
Max | cad867e | 2016-04-21 14:35:55 +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) { |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 226 | 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] | 227 | return; |
| 228 | } |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 229 | #endif |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 230 | pcu_tx_data_req(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] | 231 | } |
| 232 | |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 233 | void pcu_l1if_tx_agch(bitvec * block, int plen) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 234 | { |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 235 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
Pau Espin Pedrol | d752d7c | 2019-10-07 20:56:48 +0200 | [diff] [blame] | 236 | uint8_t data[GSM_MACBLOCK_LEN]; /* prefix PLEN */ |
| 237 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 238 | /* FIXME: why does OpenBTS has no PLEN and no fill in message? */ |
| 239 | bitvec_pack(block, data + 1); |
| 240 | data[0] = (plen << 2) | 0x01; |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 241 | |
| 242 | if (bts->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_AGCH)) |
Pau Espin Pedrol | d752d7c | 2019-10-07 20:56:48 +0200 | [diff] [blame] | 243 | gsmtap_send(bts->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] | 244 | |
Pau Espin Pedrol | d752d7c | 2019-10-07 20:56:48 +0200 | [diff] [blame] | 245 | pcu_tx_data_req(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] | 246 | } |
| 247 | |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 248 | void pcu_l1if_tx_pch(bitvec * block, int plen, uint16_t pgroup) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 249 | { |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 250 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 251 | uint8_t data[PAGING_GROUP_LEN + GSM_MACBLOCK_LEN]; |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 252 | int i; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 253 | |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 254 | /* prepend paging group */ |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 255 | for (i = 0; i < PAGING_GROUP_LEN; i++) { |
| 256 | data[PAGING_GROUP_LEN - 1 - i] = '0' + (char)(pgroup % 10); |
| 257 | pgroup = pgroup / 10; |
| 258 | } |
| 259 | OSMO_ASSERT(pgroup == 0); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 260 | |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 261 | /* block provided by upper layer comes without first byte (plen), |
| 262 | * prepend it manually: |
| 263 | */ |
| 264 | OSMO_ASSERT(sizeof(data) >= PAGING_GROUP_LEN + 1 + block->data_len); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 265 | data[3] = (plen << 2) | 0x01; |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 266 | bitvec_pack(block, data + PAGING_GROUP_LEN + 1); |
Pau Espin Pedrol | 5854370 | 2019-09-30 19:07:16 +0200 | [diff] [blame] | 267 | |
| 268 | if (bts->gsmtap_categ_mask & (1 << PCU_GSMTAP_C_DL_PCH)) |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 269 | gsmtap_send(bts->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] | 270 | |
Pau Espin Pedrol | 8dc09e7 | 2019-10-07 20:56:02 +0200 | [diff] [blame] | 271 | pcu_tx_data_req(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] | 272 | } |
| 273 | |
Jacob Erlbeck | af75ce8 | 2015-08-26 13:22:28 +0200 | [diff] [blame] | 274 | extern "C" void pcu_rx_block_time(uint16_t arfcn, uint32_t fn, uint8_t ts_no) |
| 275 | { |
| 276 | BTS::main_bts()->set_current_block_frame_number(fn, 0); |
| 277 | } |
| 278 | |
| 279 | extern "C" void pcu_rx_ra_time(uint16_t arfcn, uint32_t fn, uint8_t ts_no) |
| 280 | { |
| 281 | /* access bursts may arrive some bursts earlier */ |
| 282 | BTS::main_bts()->set_current_block_frame_number(fn, 5); |
| 283 | } |
| 284 | |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 285 | extern "C" int pcu_rx_data_ind_pdtch(uint8_t trx_no, uint8_t ts_no, uint8_t *data, |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 286 | uint8_t len, uint32_t fn, struct pcu_l1_meas *meas) |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 287 | { |
Holger Hans Peter Freyther | 9ae367f | 2013-10-26 16:42:38 +0200 | [diff] [blame] | 288 | struct gprs_rlcmac_pdch *pdch; |
| 289 | |
| 290 | pdch = &bts_main_data()->trx[trx_no].pdch[ts_no]; |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 291 | return pdch->rcv_block(data, len, fn, meas); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 292 | } |
| 293 | |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 294 | static int pcu_rx_data_ind_bcch(uint8_t *data, uint8_t len) |
| 295 | { |
| 296 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
| 297 | |
| 298 | if (len == 0) { |
| 299 | bts->si13_is_set = false; |
| 300 | LOGP(DL1IF, LOGL_INFO, "Received PCU data indication with empty SI13: cache cleaned\n"); |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | if (len != GSM_MACBLOCK_LEN) { |
| 305 | LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with SI13 with unexpected length %u\n", len); |
| 306 | return -EINVAL; |
| 307 | } |
| 308 | |
| 309 | memcpy(bts->si13, data, GSM_MACBLOCK_LEN); |
| 310 | bts->si13_is_set = true; |
| 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | |
Harald Welte | 717cdf5 | 2017-07-21 21:56:23 +0200 | [diff] [blame] | 315 | static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind) |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 316 | { |
Harald Welte | 717cdf5 | 2017-07-21 21:56:23 +0200 | [diff] [blame] | 317 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
Max | 528ff39 | 2016-02-22 11:42:33 +0100 | [diff] [blame] | 318 | int rc; |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 319 | int current_fn = get_current_fn(); |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 320 | pcu_l1_meas meas; |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 321 | uint8_t gsmtap_chantype; |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 322 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 323 | LOGP(DL1IF, LOGL_DEBUG, "Data indication received: sapi=%d arfcn=%d " |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 324 | "fn=%d cur_fn=%d block=%d data=%s\n", data_ind->sapi, |
| 325 | data_ind->arfcn, data_ind->fn, current_fn, data_ind->block_nr, |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 326 | osmo_hexdump(data_ind->data, data_ind->len)); |
| 327 | |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 328 | switch (data_ind->sapi) { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 329 | case PCU_IF_SAPI_PDTCH: |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 330 | meas.set_rssi(data_ind->rssi); |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 331 | /* convert BER to % value */ |
| 332 | meas.set_ber(data_ind->ber10k / 100); |
| 333 | meas.set_bto(data_ind->ta_offs_qbits); |
| 334 | meas.set_link_qual(data_ind->lqual_cb / 10); |
Vadim Yanitskiy | f17dfc0 | 2019-07-09 16:16:35 +0700 | [diff] [blame] | 335 | |
Max | b216c6b | 2017-09-01 11:00:39 +0200 | [diff] [blame] | 336 | LOGP(DL1IF, LOGL_DEBUG, "Data indication with raw measurements received: BER10k = %d, BTO = %d, Q = %d\n", |
| 337 | data_ind->ber10k, data_ind->ta_offs_qbits, data_ind->lqual_cb); |
Vadim Yanitskiy | f17dfc0 | 2019-07-09 16:16:35 +0700 | [diff] [blame] | 338 | |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 339 | rc = pcu_rx_data_ind_pdtch(data_ind->trx_nr, data_ind->ts_nr, |
Andreas Eversberg | 570b44b | 2013-03-16 16:15:01 +0100 | [diff] [blame] | 340 | data_ind->data, data_ind->len, data_ind->fn, |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 341 | &meas); |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 342 | gsmtap_chantype = GSMTAP_CHANNEL_PDTCH; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 343 | break; |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 344 | case PCU_IF_SAPI_BCCH: |
| 345 | rc = pcu_rx_data_ind_bcch(data_ind->data, data_ind->len); |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 346 | gsmtap_chantype = GSMTAP_CHANNEL_BCCH; |
Max | 84bf0fa | 2017-09-01 11:02:40 +0200 | [diff] [blame] | 347 | break; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 348 | default: |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 349 | LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with " |
| 350 | "unsupported sapi %d\n", data_ind->sapi); |
| 351 | rc = -EINVAL; |
Pau Espin Pedrol | 72e3956 | 2020-06-30 17:57:42 +0200 | [diff] [blame] | 352 | gsmtap_chantype = GSMTAP_CHANNEL_UNKNOWN; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 353 | } |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 354 | |
Harald Welte | b1be611 | 2017-08-17 00:49:23 +0200 | [diff] [blame] | 355 | if (rc < 0 && (bts->gsmtap_categ_mask & (1 <<PCU_GSMTAP_C_UL_UNKNOWN))) { |
Harald Welte | 717cdf5 | 2017-07-21 21:56:23 +0200 | [diff] [blame] | 356 | gsmtap_send(bts->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] | 357 | 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] | 358 | } |
| 359 | |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 360 | return rc; |
| 361 | } |
| 362 | |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 363 | static int pcu_rx_data_cnf(struct gsm_pcu_if_data *data_cnf) |
| 364 | { |
| 365 | int rc = 0; |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 366 | int current_fn = get_current_fn(); |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 367 | |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 368 | LOGP(DL1IF, LOGL_DEBUG, "Data confirm received: sapi=%d fn=%d cur_fn=%d\n", |
| 369 | data_cnf->sapi, data_cnf->fn, current_fn); |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 370 | |
| 371 | switch (data_cnf->sapi) { |
| 372 | case PCU_IF_SAPI_PCH: |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 373 | if (data_cnf->data[2] == 0x3f) |
Holger Hans Peter Freyther | 40cfaa6 | 2013-10-26 19:49:16 +0200 | [diff] [blame] | 374 | BTS::main_bts()->rcv_imm_ass_cnf(data_cnf->data, data_cnf->fn); |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 375 | break; |
| 376 | default: |
| 377 | LOGP(DL1IF, LOGL_ERROR, "Received PCU data confirm with " |
| 378 | "unsupported sapi %d\n", data_cnf->sapi); |
| 379 | rc = -EINVAL; |
| 380 | } |
| 381 | |
| 382 | return rc; |
| 383 | } |
| 384 | |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 385 | // FIXME: remove this, when changed from c++ to c. |
Max | 878bd1f | 2016-07-20 13:05:05 +0200 | [diff] [blame] | 386 | extern "C" int pcu_rx_rts_req_pdtch(uint8_t trx, uint8_t ts, |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 387 | uint32_t fn, uint8_t block_nr) |
| 388 | { |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 389 | return gprs_rlcmac_rcv_rts_block(bts_main_data(), |
Max | 878bd1f | 2016-07-20 13:05:05 +0200 | [diff] [blame] | 390 | trx, ts, fn, block_nr); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 391 | } |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 392 | extern "C" int pcu_rx_rts_req_ptcch(uint8_t trx, uint8_t ts, |
| 393 | uint32_t fn, uint8_t block_nr) |
| 394 | { |
| 395 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
| 396 | struct gprs_rlcmac_pdch *pdch; |
| 397 | |
| 398 | /* Prevent buffer overflow */ |
| 399 | if (trx >= ARRAY_SIZE(bts->trx) || ts >= 8) |
| 400 | return -EINVAL; |
| 401 | |
| 402 | /* Make sure PDCH time-slot is enabled */ |
| 403 | pdch = &bts->trx[trx].pdch[ts]; |
| 404 | if (!pdch->m_is_enabled) |
| 405 | return -EAGAIN; |
| 406 | |
| 407 | pcu_l1if_tx_ptcch(trx, ts, bts->trx[trx].arfcn, fn, block_nr, |
| 408 | pdch->ptcch_msg, GSM_MACBLOCK_LEN); |
| 409 | return 0; |
| 410 | } |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 411 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 412 | static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req) |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 413 | { |
| 414 | int rc = 0; |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 415 | int current_fn = get_current_fn(); |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 416 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 417 | LOGP(DL1IF, LOGL_DEBUG, "RTS request received: trx=%d ts=%d sapi=%d " |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 418 | "arfcn=%d fn=%d cur_fn=%d block=%d\n", rts_req->trx_nr, rts_req->ts_nr, |
| 419 | rts_req->sapi, rts_req->arfcn, rts_req->fn, current_fn, rts_req->block_nr); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 420 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 421 | switch (rts_req->sapi) { |
| 422 | case PCU_IF_SAPI_PDTCH: |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 423 | pcu_rx_rts_req_pdtch(rts_req->trx_nr, rts_req->ts_nr, |
Max | 878bd1f | 2016-07-20 13:05:05 +0200 | [diff] [blame] | 424 | rts_req->fn, rts_req->block_nr); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 425 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 426 | case PCU_IF_SAPI_PTCCH: |
Vadim Yanitskiy | 78f5861 | 2019-10-05 22:22:08 +0700 | [diff] [blame] | 427 | pcu_rx_rts_req_ptcch(rts_req->trx_nr, rts_req->ts_nr, |
| 428 | rts_req->fn, rts_req->block_nr); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 429 | break; |
| 430 | default: |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 431 | LOGP(DL1IF, LOGL_ERROR, "Received PCU RTS request with " |
| 432 | "unsupported sapi %d\n", rts_req->sapi); |
| 433 | rc = -EINVAL; |
| 434 | } |
| 435 | |
| 436 | return rc; |
| 437 | } |
| 438 | |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 439 | /* C -> C++ adapter for direct DSP access code (e.g. osmo-bts-sysmo) */ |
Vadim Yanitskiy | 6fd4733 | 2020-05-21 19:23:33 +0700 | [diff] [blame] | 440 | extern "C" int pcu_rx_rach_ind_ptcch(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] | 441 | { |
Vadim Yanitskiy | a0a0b7f | 2020-05-21 19:55:46 +0700 | [diff] [blame] | 442 | struct rach_ind_params rip = { |
| 443 | /* The content of RA is not of interest on PTCCH/U */ |
| 444 | .burst_type = GSM_L1_BURST_TYPE_ACCESS_0, |
| 445 | .is_11bit = false, |
| 446 | .ra = 0x00, |
| 447 | .trx_nr = trx_nr, |
| 448 | .ts_nr = ts_nr, |
| 449 | .rfn = fn, |
| 450 | .qta = qta, |
| 451 | }; |
| 452 | |
| 453 | return BTS::main_bts()->rcv_ptcch_rach(&rip); |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 454 | } |
| 455 | |
Vadim Yanitskiy | a0a0b7f | 2020-05-21 19:55:46 +0700 | [diff] [blame] | 456 | static int pcu_rx_rach_ind(const struct gsm_pcu_if_rach_ind *rach_ind) |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 457 | { |
| 458 | int rc = 0; |
Philipp Maier | 7e8e397 | 2018-04-10 13:31:45 +0200 | [diff] [blame] | 459 | int current_fn = get_current_fn(); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 460 | |
| 461 | LOGP(DL1IF, LOGL_INFO, "RACH request received: sapi=%d " |
Vadim Yanitskiy | b30f28f | 2020-03-29 19:01:58 +0700 | [diff] [blame] | 462 | "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] | 463 | rach_ind->ra, rach_ind->fn, current_fn, rach_ind->is_11bit); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 464 | |
Vadim Yanitskiy | a0a0b7f | 2020-05-21 19:55:46 +0700 | [diff] [blame] | 465 | struct rach_ind_params rip = { |
| 466 | .burst_type = (enum ph_burst_type) rach_ind->burst_type, |
| 467 | .is_11bit = rach_ind->is_11bit > 0, |
| 468 | .ra = rach_ind->ra, |
| 469 | .trx_nr = rach_ind->trx_nr, |
| 470 | .ts_nr = rach_ind->ts_nr, |
| 471 | .rfn = rach_ind->fn, |
| 472 | .qta = rach_ind->qta, |
| 473 | }; |
| 474 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 475 | switch (rach_ind->sapi) { |
| 476 | case PCU_IF_SAPI_RACH: |
Vadim Yanitskiy | a0a0b7f | 2020-05-21 19:55:46 +0700 | [diff] [blame] | 477 | rc = BTS::main_bts()->rcv_rach(&rip); |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 478 | break; |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 479 | case PCU_IF_SAPI_PTCCH: |
Vadim Yanitskiy | a0a0b7f | 2020-05-21 19:55:46 +0700 | [diff] [blame] | 480 | rc = BTS::main_bts()->rcv_ptcch_rach(&rip); |
Vadim Yanitskiy | ffebd24 | 2019-10-05 23:45:31 +0700 | [diff] [blame] | 481 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 482 | default: |
| 483 | LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with " |
| 484 | "unsupported sapi %d\n", rach_ind->sapi); |
| 485 | rc = -EINVAL; |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 486 | } |
| 487 | |
Ivan Kluchnikov | e3a0596 | 2012-03-18 15:48:51 +0400 | [diff] [blame] | 488 | return rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 489 | } |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 490 | |
Vadim Yanitskiy | ce0dae9 | 2020-07-24 01:16:36 +0700 | [diff] [blame] | 491 | static int pcu_rx_info_ind(const struct gsm_pcu_if_info_ind *info_ind) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 492 | { |
Holger Hans Peter Freyther | b6acfda | 2013-10-17 19:41:11 +0200 | [diff] [blame] | 493 | struct gprs_rlcmac_bts *bts = bts_main_data(); |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 494 | struct gprs_bssgp_pcu *pcu; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 495 | struct osmo_sockaddr local_sockaddr = {}, remote_sockaddr = {}; |
Harald Welte | bb47d95 | 2016-11-17 18:40:02 +0100 | [diff] [blame] | 496 | int rc = 0; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 497 | int good_nsvc = 0; |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 498 | unsigned int trx_nr, ts_nr; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 499 | int i; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 500 | |
Andreas Eversberg | 8389fd0 | 2012-07-18 10:06:48 +0200 | [diff] [blame] | 501 | if (info_ind->version != PCU_IF_VERSION) { |
Vadim Yanitskiy | fad2128 | 2020-07-19 02:05:33 +0700 | [diff] [blame] | 502 | fprintf(stderr, "PCU interface version number of BTS (%u) is " |
| 503 | "different (%u).\nPlease re-compile!\n", |
Andreas Eversberg | 8389fd0 | 2012-07-18 10:06:48 +0200 | [diff] [blame] | 504 | info_ind->version, PCU_IF_VERSION); |
| 505 | exit(-1); |
| 506 | } |
| 507 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 508 | LOGP(DL1IF, LOGL_DEBUG, "Info indication received:\n"); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 509 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 510 | if (!(info_ind->flags & PCU_IF_FLAG_ACTIVE)) { |
| 511 | LOGP(DL1IF, LOGL_NOTICE, "BTS not available\n"); |
Stefan Sperling | 5b22fb7 | 2018-02-14 19:46:33 +0100 | [diff] [blame] | 512 | if (!bts->active) |
| 513 | return -EAGAIN; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 514 | bssgp_failed: |
Stefan Sperling | 5b22fb7 | 2018-02-14 19:46:33 +0100 | [diff] [blame] | 515 | bts->active = false; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 516 | /* free all TBF */ |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 517 | for (trx_nr = 0; trx_nr < ARRAY_SIZE(bts->trx); trx_nr++) { |
| 518 | bts->trx[trx_nr].arfcn = info_ind->trx[trx_nr].arfcn; |
| 519 | for (ts_nr = 0; ts_nr < ARRAY_SIZE(bts->trx[0].pdch); ts_nr++) |
| 520 | bts->trx[trx_nr].pdch[ts_nr].free_resources(); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 521 | } |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 522 | gprs_bssgp_destroy(bts); |
Daniel Willmann | 6d8884d | 2014-06-04 18:30:59 +0200 | [diff] [blame] | 523 | exit(0); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 524 | } |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 525 | LOGP(DL1IF, LOGL_INFO, "BTS available\n"); |
Neels Hofmeyr | bdc55fa | 2018-02-21 00:39:07 +0100 | [diff] [blame] | 526 | LOGP(DL1IF, LOGL_DEBUG, " mcc=%03u\n", info_ind->mcc); |
| 527 | 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] | 528 | LOGP(DL1IF, LOGL_DEBUG, " lac=%d\n", info_ind->lac); |
| 529 | LOGP(DL1IF, LOGL_DEBUG, " rac=%d\n", info_ind->rac); |
Harald Welte | 1473b37 | 2019-03-21 19:48:55 +0100 | [diff] [blame] | 530 | LOGP(DL1IF, LOGL_DEBUG, " cell_id=%d\n", info_ind->cell_id); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 531 | LOGP(DL1IF, LOGL_DEBUG, " bsic=%d\n", info_ind->bsic); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 532 | LOGP(DL1IF, LOGL_DEBUG, " nsei=%d\n", info_ind->nsei); |
| 533 | LOGP(DL1IF, LOGL_DEBUG, " nse_timer=%d %d %d %d %d %d %d\n", |
| 534 | info_ind->nse_timer[0], info_ind->nse_timer[1], |
| 535 | info_ind->nse_timer[2], info_ind->nse_timer[3], |
| 536 | info_ind->nse_timer[4], info_ind->nse_timer[5], |
| 537 | info_ind->nse_timer[6]); |
| 538 | LOGP(DL1IF, LOGL_DEBUG, " cell_timer=%d %d %d %d %d %d %d %d %d %d " |
| 539 | "%d\n", |
| 540 | info_ind->cell_timer[0], info_ind->cell_timer[1], |
| 541 | info_ind->cell_timer[2], info_ind->cell_timer[3], |
| 542 | info_ind->cell_timer[4], info_ind->cell_timer[5], |
| 543 | info_ind->cell_timer[6], info_ind->cell_timer[7], |
| 544 | info_ind->cell_timer[8], info_ind->cell_timer[9], |
| 545 | info_ind->cell_timer[10]); |
| 546 | LOGP(DL1IF, LOGL_DEBUG, " repeat_time=%d\n", info_ind->repeat_time); |
| 547 | LOGP(DL1IF, LOGL_DEBUG, " repeat_count=%d\n", info_ind->repeat_count); |
| 548 | LOGP(DL1IF, LOGL_DEBUG, " bvci=%d\n", info_ind->bvci); |
| 549 | LOGP(DL1IF, LOGL_DEBUG, " t3142=%d\n", info_ind->t3142); |
| 550 | LOGP(DL1IF, LOGL_DEBUG, " t3169=%d\n", info_ind->t3169); |
| 551 | LOGP(DL1IF, LOGL_DEBUG, " t3191=%d\n", info_ind->t3191); |
| 552 | LOGP(DL1IF, LOGL_DEBUG, " t3193=%d (ms)\n", info_ind->t3193_10ms * 10); |
| 553 | LOGP(DL1IF, LOGL_DEBUG, " t3195=%d\n", info_ind->t3195); |
| 554 | LOGP(DL1IF, LOGL_DEBUG, " n3101=%d\n", info_ind->n3101); |
| 555 | LOGP(DL1IF, LOGL_DEBUG, " n3103=%d\n", info_ind->n3103); |
| 556 | LOGP(DL1IF, LOGL_DEBUG, " n3105=%d\n", info_ind->n3105); |
| 557 | LOGP(DL1IF, LOGL_DEBUG, " cv_countdown=%d\n", info_ind->cv_countdown); |
| 558 | LOGP(DL1IF, LOGL_DEBUG, " dl_tbf_ext=%d\n", info_ind->dl_tbf_ext); |
| 559 | LOGP(DL1IF, LOGL_DEBUG, " ul_tbf_ext=%d\n", info_ind->ul_tbf_ext); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 560 | bts->bsic = info_ind->bsic; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 561 | for (i = 0; i < 4; i++) { |
| 562 | if ((info_ind->flags & (PCU_IF_FLAG_CS1 << i))) |
| 563 | LOGP(DL1IF, LOGL_DEBUG, " Use CS%d\n", i+1); |
| 564 | } |
| 565 | for (i = 0; i < 9; i++) { |
| 566 | if ((info_ind->flags & (PCU_IF_FLAG_MCS1 << i))) |
| 567 | LOGP(DL1IF, LOGL_DEBUG, " Use MCS%d\n", i+1); |
| 568 | } |
| 569 | LOGP(DL1IF, LOGL_DEBUG, " initial_cs=%d\n", info_ind->initial_cs); |
| 570 | LOGP(DL1IF, LOGL_DEBUG, " initial_mcs=%d\n", info_ind->initial_mcs); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 571 | |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 572 | pcu = gprs_bssgp_init( |
| 573 | bts, |
| 574 | info_ind->nsei, info_ind->bvci, |
| 575 | info_ind->mcc, info_ind->mnc, info_ind->mnc_3_digits, |
| 576 | info_ind->lac, info_ind->rac, info_ind->cell_id); |
| 577 | if (!pcu) { |
Vadim Yanitskiy | c1a726c | 2020-10-08 22:46:26 +0700 | [diff] [blame^] | 578 | LOGP(DL1IF, LOGL_ERROR, "Failed to init BSSGP\n"); |
Alexander Couzens | 9b5c960 | 2020-07-28 13:47:18 +0200 | [diff] [blame] | 579 | goto bssgp_failed; |
| 580 | } |
| 581 | |
Vadim Yanitskiy | 5d5b50a | 2020-10-08 22:28:58 +0700 | [diff] [blame] | 582 | for (unsigned int i = 0; i < ARRAY_SIZE(info_ind->nsvci); i++) { |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 583 | struct osmo_sockaddr_str sockstr; |
| 584 | |
| 585 | switch (info_ind->address_type[i]) { |
| 586 | case PCU_IF_ADDR_TYPE_IPV4: |
| 587 | local_sockaddr.u.sin.sin_family = AF_INET; |
| 588 | local_sockaddr.u.sin.sin_addr.s_addr = INADDR_ANY; |
| 589 | local_sockaddr.u.sin.sin_port = htons(info_ind->local_port[i]); |
| 590 | |
| 591 | remote_sockaddr.u.sin.sin_family = AF_INET; |
| 592 | remote_sockaddr.u.sin.sin_addr = info_ind->remote_ip[i].v4; |
| 593 | remote_sockaddr.u.sin.sin_port = htons(info_ind->remote_port[i]); |
| 594 | break; |
| 595 | case PCU_IF_ADDR_TYPE_IPV6: |
| 596 | local_sockaddr.u.sin6.sin6_family = AF_INET6; |
| 597 | local_sockaddr.u.sin6.sin6_addr = in6addr_any; |
| 598 | local_sockaddr.u.sin6.sin6_port = htons(info_ind->local_port[i]); |
| 599 | |
| 600 | remote_sockaddr.u.sin6.sin6_family = AF_INET6; |
| 601 | remote_sockaddr.u.sin6.sin6_addr = info_ind->remote_ip[i].v6; |
| 602 | remote_sockaddr.u.sin6.sin6_port = htons(info_ind->remote_port[i]); |
| 603 | break; |
| 604 | default: |
| 605 | continue; |
| 606 | } |
| 607 | |
| 608 | LOGP(DL1IF, LOGL_DEBUG, " NS%d nsvci=%d\n", i, info_ind->nsvci[i]); |
| 609 | LOGP(DL1IF, LOGL_DEBUG, " NS%d local_port=%d\n", i, info_ind->local_port[i]); |
| 610 | LOGP(DL1IF, LOGL_DEBUG, " NS%d remote_port=%d\n", i, info_ind->remote_port[i]); |
| 611 | |
| 612 | if (osmo_sockaddr_str_from_sockaddr(&sockstr, &remote_sockaddr.u.sas)) |
| 613 | strcpy(sockstr.ip, "invalid"); |
| 614 | |
| 615 | LOGP(DL1IF, LOGL_DEBUG, " NS%d remote_ip=%s\n", i, sockstr.ip); |
| 616 | rc = gprs_nsvc_create_and_connect(bts, |
| 617 | &local_sockaddr, &remote_sockaddr, |
| 618 | info_ind->nsei, info_ind->nsvci[i]); |
| 619 | if (rc) { |
| 620 | LOGP(DL1IF, LOGL_ERROR, "Failed to create NSVC connection to %s:%d!\n", |
| 621 | sockstr.ip, sockstr.port); |
| 622 | continue; |
| 623 | } |
| 624 | |
| 625 | good_nsvc++; |
| 626 | } |
| 627 | |
| 628 | if (good_nsvc == 0) { |
| 629 | 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] | 630 | goto bssgp_failed; |
| 631 | } |
| 632 | |
| 633 | bts->cs1 = !!(info_ind->flags & PCU_IF_FLAG_CS1); |
| 634 | bts->cs2 = !!(info_ind->flags & PCU_IF_FLAG_CS2); |
| 635 | bts->cs3 = !!(info_ind->flags & PCU_IF_FLAG_CS3); |
| 636 | bts->cs4 = !!(info_ind->flags & PCU_IF_FLAG_CS4); |
| 637 | if (!bts->cs1 && !bts->cs2 && !bts->cs3 && !bts->cs4) |
| 638 | bts->cs1 = 1; |
| 639 | if (info_ind->t3142) { /* if timer values are set */ |
Pau Espin Pedrol | 28f160e | 2019-09-05 14:48:35 +0200 | [diff] [blame] | 640 | osmo_tdef_set(bts->T_defs_bts, 3142, info_ind->t3142, OSMO_TDEF_S); |
| 641 | osmo_tdef_set(bts->T_defs_bts, 3169, info_ind->t3169, OSMO_TDEF_S); |
| 642 | osmo_tdef_set(bts->T_defs_bts, 3191, info_ind->t3191, OSMO_TDEF_S); |
| 643 | osmo_tdef_set(bts->T_defs_bts, 3193, info_ind->t3193_10ms * 10, OSMO_TDEF_MS); |
| 644 | 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] | 645 | bts->n3101 = info_ind->n3101; |
| 646 | bts->n3103 = info_ind->n3103; |
| 647 | bts->n3105 = info_ind->n3105; |
| 648 | } |
Andreas Eversberg | 8b761a3 | 2012-07-20 21:50:31 +0200 | [diff] [blame] | 649 | if (!bts->force_cs) { |
| 650 | if (info_ind->initial_cs < 1 || info_ind->initial_cs > 4) |
Andreas Eversberg | 499ff41 | 2012-10-03 14:21:36 +0200 | [diff] [blame] | 651 | bts->initial_cs_dl = 1; |
Andreas Eversberg | 8b761a3 | 2012-07-20 21:50:31 +0200 | [diff] [blame] | 652 | else |
Andreas Eversberg | 499ff41 | 2012-10-03 14:21:36 +0200 | [diff] [blame] | 653 | bts->initial_cs_dl = info_ind->initial_cs; |
| 654 | bts->initial_cs_ul = bts->initial_cs_dl; |
Andreas Eversberg | 8b761a3 | 2012-07-20 21:50:31 +0200 | [diff] [blame] | 655 | } |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 656 | |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 657 | for (trx_nr = 0; trx_nr < ARRAY_SIZE(bts->trx); trx_nr++) { |
| 658 | bts->trx[trx_nr].arfcn = info_ind->trx[trx_nr].arfcn; |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 659 | if ((info_ind->flags & PCU_IF_FLAG_SYSMO) |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 660 | && info_ind->trx[trx_nr].hlayer1) { |
Max | cad867e | 2016-04-21 14:35:55 +0200 | [diff] [blame] | 661 | #ifdef ENABLE_DIRECT_PHY |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 662 | LOGP(DL1IF, LOGL_DEBUG, " TRX %d hlayer1=%x\n", trx_nr, |
| 663 | info_ind->trx[trx_nr].hlayer1); |
| 664 | if (!bts->trx[trx_nr].fl1h) |
| 665 | bts->trx[trx_nr].fl1h = l1if_open_pdch( |
| 666 | trx_nr, |
| 667 | info_ind->trx[trx_nr].hlayer1, |
Max | 2efdf69 | 2016-02-22 11:39:30 +0100 | [diff] [blame] | 668 | bts->gsmtap); |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 669 | if (!bts->trx[trx_nr].fl1h) { |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 670 | LOGP(DL1IF, LOGL_FATAL, "Failed to open direct " |
| 671 | "DSP access for PDCH.\n"); |
| 672 | exit(0); |
| 673 | } |
| 674 | #else |
| 675 | LOGP(DL1IF, LOGL_FATAL, "Compiled without direct DSP " |
| 676 | "access for PDCH, but enabled at " |
| 677 | "BTS. Please deactivate it!\n"); |
| 678 | exit(0); |
| 679 | #endif |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 680 | } |
| 681 | |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 682 | 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] | 683 | 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] | 684 | struct gprs_rlcmac_pdch *pdch = &bts->trx[trx_nr].pdch[ts_nr]; |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 685 | if ((info_ind->trx[trx_nr].pdch_mask & (1 << ts_nr))) { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 686 | /* FIXME: activate dynamically at RLCMAC */ |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 687 | if (!pdch->is_enabled()) { |
Max | cad867e | 2016-04-21 14:35:55 +0200 | [diff] [blame] | 688 | #ifdef ENABLE_DIRECT_PHY |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 689 | if ((info_ind->flags & |
| 690 | PCU_IF_FLAG_SYSMO)) |
| 691 | l1if_connect_pdch( |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 692 | bts->trx[trx_nr].fl1h, ts_nr); |
Andreas Eversberg | a23c7ee | 2012-12-18 10:47:28 +0100 | [diff] [blame] | 693 | #endif |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 694 | pcu_tx_act_req(trx_nr, ts_nr, 1); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 695 | pdch->enable(); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 696 | } |
Vadim Yanitskiy | 8e2bd1e | 2020-07-21 00:54:42 +0700 | [diff] [blame] | 697 | |
| 698 | pdch->tsc = its->tsc; |
| 699 | |
| 700 | /* (Optional) frequency hopping parameters */ |
| 701 | if (its->h) { |
| 702 | pdch->fh.enabled = true; |
| 703 | pdch->fh.maio = its->maio; |
| 704 | pdch->fh.hsn = its->hsn; |
| 705 | |
| 706 | OSMO_ASSERT(its->ma_bit_len <= sizeof(pdch->fh.ma) * 8); |
| 707 | pdch->fh.ma_oct_len = OSMO_BYTES_FOR_BITS(its->ma_bit_len); |
| 708 | pdch->fh.ma_bit_len = its->ma_bit_len; |
| 709 | |
| 710 | /* Mobile Allocation + padding (byte/bit order as on the wire): |
| 711 | * | 00 00 00 00 00 cc bb aa | -> | cc bb aa 00 00 00 00 00 | */ |
| 712 | unsigned int offset = sizeof(pdch->fh.ma) - pdch->fh.ma_oct_len; |
| 713 | memcpy(pdch->fh.ma, its->ma + offset, pdch->fh.ma_oct_len); |
| 714 | } |
| 715 | |
| 716 | LOGP(DL1IF, LOGL_INFO, "PDCH (trx=%u, ts=%u): tsc=%u, hopping=%s\n", |
| 717 | trx_nr, ts_nr, pdch->tsc, pdch->fh.enabled ? "yes" : "no"); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 718 | } else { |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 719 | if (pdch->is_enabled()) { |
Vadim Yanitskiy | 11b0f00 | 2020-07-24 01:24:47 +0700 | [diff] [blame] | 720 | pcu_tx_act_req(trx_nr, ts_nr, 0); |
Holger Hans Peter Freyther | 09ef27a | 2013-10-20 16:37:05 +0200 | [diff] [blame] | 721 | pdch->free_resources(); |
Holger Hans Peter Freyther | 17b0d83 | 2013-10-19 17:37:48 +0200 | [diff] [blame] | 722 | pdch->disable(); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 723 | } |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 724 | } |
| 725 | } |
| 726 | } |
| 727 | |
Stefan Sperling | 5b22fb7 | 2018-02-14 19:46:33 +0100 | [diff] [blame] | 728 | bts->active = true; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 729 | return rc; |
| 730 | } |
| 731 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 732 | static int pcu_rx_time_ind(struct gsm_pcu_if_time_ind *time_ind) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 733 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 734 | uint8_t fn13 = time_ind->fn % 13; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 735 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 736 | /* omit frame numbers not starting at a MAC block */ |
| 737 | if (fn13 != 0 && fn13 != 4 && fn13 != 8) |
| 738 | return 0; |
Max | 3741f14 | 2017-06-26 12:10:12 +0200 | [diff] [blame] | 739 | |
| 740 | 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] | 741 | |
Holger Hans Peter Freyther | 9b30c7f | 2013-10-17 19:59:56 +0200 | [diff] [blame] | 742 | BTS::main_bts()->set_current_frame_number(time_ind->fn); |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 743 | return 0; |
| 744 | } |
| 745 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 746 | static int pcu_rx_pag_req(struct gsm_pcu_if_pag_req *pag_req) |
| 747 | { |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 748 | struct osmo_mobile_identity mi; |
| 749 | int rc; |
| 750 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 751 | LOGP(DL1IF, LOGL_DEBUG, "Paging request received: chan_needed=%d " |
| 752 | "length=%d\n", pag_req->chan_needed, pag_req->identity_lv[0]); |
| 753 | |
Pau Espin Pedrol | 32499b6 | 2019-12-09 13:55:12 +0100 | [diff] [blame] | 754 | /* check if identity does not fit: length > sizeof(lv) - 1 */ |
| 755 | if (pag_req->identity_lv[0] >= sizeof(pag_req->identity_lv)) { |
| 756 | LOGP(DL1IF, LOGL_ERROR, "Paging identity too large (%" PRIu8 ")\n", |
| 757 | pag_req->identity_lv[0]); |
| 758 | return -EINVAL; |
| 759 | } |
| 760 | |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 761 | rc = osmo_mobile_identity_decode(&mi, &pag_req->identity_lv[1], pag_req->identity_lv[0], true); |
| 762 | if (rc < 0) { |
| 763 | LOGP(DL1IF, LOGL_ERROR, "Failed to decode Mobile Identity in Paging Request (rc=%d)\n", rc); |
| 764 | return -EINVAL; |
| 765 | } |
| 766 | |
| 767 | return BTS::main_bts()->add_paging(pag_req->chan_needed, &mi); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 768 | } |
| 769 | |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 770 | static int pcu_rx_susp_req(struct gsm_pcu_if_susp_req *susp_req) |
| 771 | { |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 772 | BTS *bts = BTS::main_bts(); |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 773 | struct bssgp_bvc_ctx *bctx = gprs_bssgp_pcu_current_bctx(); |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 774 | GprsMs *ms; |
| 775 | struct gprs_rlcmac_dl_tbf *dl_tbf; |
| 776 | struct gprs_rlcmac_ul_tbf *ul_tbf; |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 777 | struct gprs_ra_id ra_id; |
| 778 | |
| 779 | gsm48_parse_ra(&ra_id, susp_req->ra_id); |
| 780 | |
| 781 | LOGP(DL1IF, LOGL_INFO, "GPRS Suspend request received: TLLI=0x%08x RAI=%s\n", |
| 782 | susp_req->tlli, osmo_rai_name(&ra_id)); |
| 783 | |
Pau Espin Pedrol | bd9973a | 2020-09-22 15:57:37 +0200 | [diff] [blame] | 784 | if ((ms = bts->ms_store().get_ms(susp_req->tlli))) { |
| 785 | /* We need to catch both pointers here since MS may become freed |
| 786 | after first tbf_free(dl_tbf) if only DL TBF was available */ |
| 787 | dl_tbf = ms->dl_tbf(); |
| 788 | ul_tbf = ms->ul_tbf(); |
| 789 | if (dl_tbf) |
| 790 | tbf_free(dl_tbf); |
| 791 | if (ul_tbf) |
| 792 | tbf_free(ul_tbf); |
| 793 | } |
| 794 | |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 795 | if (!bctx) |
| 796 | return -1; |
| 797 | |
| 798 | return bssgp_tx_suspend(bctx->nsei, susp_req->tlli, &ra_id); |
| 799 | } |
| 800 | |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 801 | static int pcu_rx_app_info_req(struct gsm_pcu_if_app_info_req *app_info_req) |
| 802 | { |
| 803 | LListHead<GprsMs> *ms_iter; |
| 804 | BTS *bts = BTS::main_bts(); |
| 805 | struct gprs_rlcmac_bts *bts_data = bts->bts_data(); |
| 806 | |
| 807 | LOGP(DL1IF, LOGL_DEBUG, "Application Information Request received: type=0x%08x len=%i\n", |
| 808 | app_info_req->application_type, app_info_req->len); |
| 809 | |
| 810 | bts_data->app_info_pending = 0; |
| 811 | llist_for_each(ms_iter, &bts->ms_store().ms_list()) { |
| 812 | GprsMs *ms = ms_iter->entry(); |
| 813 | if (!ms->dl_tbf()) |
| 814 | continue; |
| 815 | bts_data->app_info_pending++; |
| 816 | ms->app_info_pending = true; |
| 817 | } |
| 818 | |
| 819 | if (!bts_data->app_info_pending) { |
| 820 | LOGP(DL1IF, LOGL_NOTICE, "Packet Application Information will not be sent, no subscribers with active" |
| 821 | " TBF\n"); |
| 822 | return -1; |
| 823 | } |
| 824 | |
| 825 | if (bts_data->app_info) { |
| 826 | LOGP(DL1IF, LOGL_NOTICE, "Previous Packet Application Information was not sent to all subscribers," |
| 827 | " overwriting with new one\n"); |
| 828 | msgb_free(bts_data->app_info); |
| 829 | } |
| 830 | |
| 831 | LOGP(DL1IF, LOGL_INFO, "Sending Packet Application Information to %i subscribers with active TBF\n", |
| 832 | bts_data->app_info_pending); |
| 833 | bts_data->app_info = gprs_rlcmac_app_info_msg(app_info_req); |
| 834 | return 0; |
| 835 | } |
| 836 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 837 | int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 838 | { |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 839 | int rc = 0; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 840 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 841 | switch (msg_type) { |
| 842 | case PCU_IF_MSG_DATA_IND: |
Harald Welte | 717cdf5 | 2017-07-21 21:56:23 +0200 | [diff] [blame] | 843 | rc = pcu_rx_data_ind(&pcu_prim->u.data_ind); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 844 | break; |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 845 | case PCU_IF_MSG_DATA_CNF: |
| 846 | rc = pcu_rx_data_cnf(&pcu_prim->u.data_cnf); |
| 847 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 848 | case PCU_IF_MSG_RTS_REQ: |
| 849 | rc = pcu_rx_rts_req(&pcu_prim->u.rts_req); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 850 | break; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 851 | case PCU_IF_MSG_RACH_IND: |
| 852 | rc = pcu_rx_rach_ind(&pcu_prim->u.rach_ind); |
| 853 | break; |
| 854 | case PCU_IF_MSG_INFO_IND: |
| 855 | rc = pcu_rx_info_ind(&pcu_prim->u.info_ind); |
| 856 | break; |
| 857 | case PCU_IF_MSG_TIME_IND: |
| 858 | rc = pcu_rx_time_ind(&pcu_prim->u.time_ind); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 859 | break; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 860 | case PCU_IF_MSG_PAG_REQ: |
| 861 | rc = pcu_rx_pag_req(&pcu_prim->u.pag_req); |
| 862 | break; |
Harald Welte | 3447c4a | 2017-07-11 00:06:38 +0200 | [diff] [blame] | 863 | case PCU_IF_MSG_SUSP_REQ: |
| 864 | rc = pcu_rx_susp_req(&pcu_prim->u.susp_req); |
| 865 | break; |
Oliver Smith | cfb6321 | 2019-09-05 17:13:33 +0200 | [diff] [blame] | 866 | case PCU_IF_MSG_APP_INFO_REQ: |
| 867 | rc = pcu_rx_app_info_req(&pcu_prim->u.app_info_req); |
| 868 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 869 | default: |
Thorsten Alteholz | 8bb7904 | 2018-10-06 10:42:58 +0200 | [diff] [blame] | 870 | LOGP(DL1IF, LOGL_ERROR, "Received unknown PCU msg type %d\n", |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 871 | msg_type); |
| 872 | rc = -EINVAL; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 873 | } |
Philipp Maier | 8ccf704 | 2018-04-10 13:12:42 +0200 | [diff] [blame] | 874 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 875 | return rc; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 876 | } |