Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2020 sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| 3 | * Author: Pau Espin Pedrol <pespin@sysmocom.de> |
| 4 | * |
| 5 | * SPDX-License-Identifier: AGPL-3.0+ |
| 6 | * |
| 7 | * This program is free software: you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Affero General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU Affero General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Affero General Public License |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | * See the COPYING file in the main directory for details. |
| 20 | */ |
| 21 | |
| 22 | #include <cstdint> |
| 23 | #include <cstring> |
| 24 | #include <cstdlib> |
| 25 | |
| 26 | #ifdef HAVE_CONFIG_H |
| 27 | #include "config.h" |
| 28 | #endif |
| 29 | |
| 30 | #include "Logger.h" |
| 31 | #include "Threads.h" |
| 32 | #include "IPCDevice.h" |
| 33 | #include "smpl_buf.h" |
| 34 | |
| 35 | extern "C" { |
| 36 | #include <sys/mman.h> |
| 37 | #include <sys/stat.h> /* For mode constants */ |
| 38 | #include <fcntl.h> /* For O_* constants */ |
| 39 | |
| 40 | #include "osmo_signal.h" |
| 41 | #include <osmocom/core/talloc.h> |
| 42 | #include <osmocom/core/select.h> |
| 43 | #include <osmocom/core/socket.h> |
| 44 | #include <osmocom/core/logging.h> |
| 45 | #include <osmocom/core/utils.h> |
| 46 | #include <osmocom/core/msgb.h> |
| 47 | #include <osmocom/core/select.h> |
| 48 | #include <osmocom/core/timer.h> |
| 49 | |
| 50 | #include "ipc_shm.h" |
| 51 | } |
| 52 | |
| 53 | #define SAMPLE_BUF_SZ (1 << 20) |
| 54 | |
| 55 | using namespace std; |
| 56 | |
| 57 | static int ipc_chan_sock_cb(struct osmo_fd *bfd, unsigned int flags); |
| 58 | |
| 59 | IPCDevice::IPCDevice(size_t tx_sps, size_t rx_sps, InterfaceType iface, size_t chan_num, double lo_offset, |
| 60 | const std::vector<std::string> &tx_paths, const std::vector<std::string> &rx_paths) |
Eric | 5561f11 | 2022-07-19 21:18:21 +0200 | [diff] [blame^] | 61 | : RadioDevice(tx_sps, rx_sps, iface, chan_num, lo_offset, tx_paths, rx_paths), sk_chan_state(chans, ipc_per_trx_sock_state()), |
| 62 | tx_attenuation(), tmp_state(IPC_IF_MSG_GREETING_REQ), shm(NULL), shm_dec(0), |
| 63 | rx_buffers(chans), started(false), tx_gains(chans), rx_gains(chans) |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 64 | { |
| 65 | LOGC(DDEV, INFO) << "creating IPC device..."; |
| 66 | |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 67 | /* Set up per-channel Rx timestamp based Ring buffers */ |
| 68 | for (size_t i = 0; i < rx_buffers.size(); i++) |
| 69 | rx_buffers[i] = new smpl_buf(SAMPLE_BUF_SZ / sizeof(uint32_t)); |
| 70 | } |
| 71 | |
| 72 | IPCDevice::~IPCDevice() |
| 73 | { |
| 74 | LOGC(DDEV, INFO) << "Closing IPC device"; |
| 75 | /* disable all channels */ |
| 76 | |
| 77 | for (size_t i = 0; i < rx_buffers.size(); i++) |
| 78 | delete rx_buffers[i]; |
| 79 | |
| 80 | ipc_sock_close(&master_sk_state); |
| 81 | |
| 82 | for (unsigned int i = 0; i < sk_chan_state.size(); i++) |
| 83 | ipc_sock_close(&sk_chan_state[i]); |
| 84 | |
| 85 | for (auto i : shm_io_rx_streams) |
| 86 | ipc_shm_close(i); |
| 87 | for (auto i : shm_io_tx_streams) |
| 88 | ipc_shm_close(i); |
| 89 | |
| 90 | if (shm_dec) |
| 91 | talloc_free(shm_dec); |
| 92 | } |
| 93 | |
| 94 | int IPCDevice::ipc_shm_connect(const char *shm_name) |
| 95 | { |
| 96 | int fd; |
Vadim Yanitskiy | 683f140 | 2021-10-25 12:41:20 +0300 | [diff] [blame] | 97 | char err_buf[256]; |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 98 | size_t shm_len; |
| 99 | int rc; |
| 100 | |
| 101 | LOGP(DDEV, LOGL_NOTICE, "Opening shm path %s\n", shm_name); |
| 102 | if ((fd = shm_open(shm_name, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR)) < 0) { |
Vadim Yanitskiy | 683f140 | 2021-10-25 12:41:20 +0300 | [diff] [blame] | 103 | LOGP(DDEV, LOGL_ERROR, "shm_open %d: %s\n", errno, |
| 104 | strerror_r(errno, err_buf, sizeof(err_buf))); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 105 | rc = -errno; |
| 106 | goto err_shm_open; |
| 107 | } |
| 108 | |
| 109 | // Get size of the allocated memory |
| 110 | struct stat shm_stat; |
| 111 | if (fstat(fd, &shm_stat) < 0) { |
Vadim Yanitskiy | 683f140 | 2021-10-25 12:41:20 +0300 | [diff] [blame] | 112 | LOGP(DDEV, LOGL_ERROR, "fstat %d: %s\n", errno, |
| 113 | strerror_r(errno, err_buf, sizeof(err_buf))); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 114 | rc = -errno; |
| 115 | goto err_mmap; |
| 116 | } |
| 117 | |
| 118 | shm_len = shm_stat.st_size; |
| 119 | |
| 120 | LOGP(DDEV, LOGL_NOTICE, "mmaping shared memory fd %d (size=%zu)\n", fd, shm_len); |
| 121 | if ((shm = mmap(NULL, shm_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) { |
Vadim Yanitskiy | 683f140 | 2021-10-25 12:41:20 +0300 | [diff] [blame] | 122 | LOGP(DDEV, LOGL_ERROR, "mmap %d: %s\n", errno, |
| 123 | strerror_r(errno, err_buf, sizeof(err_buf))); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 124 | rc = -errno; |
| 125 | goto err_mmap; |
| 126 | } |
| 127 | LOGP(DDEV, LOGL_NOTICE, "mmap'ed shared memory at addr %p\n", shm); |
| 128 | // LOGP(DDEV, LOGL_NOTICE, "%s\n", osmo_hexdump((const unsigned char *)shm, 80)); |
| 129 | /* After a call to mmap(2) the file descriptor may be closed without affecting the memory mapping. */ |
| 130 | close(fd); |
| 131 | return 0; |
| 132 | err_mmap: |
| 133 | shm_unlink(shm_name); |
| 134 | close(fd); |
| 135 | err_shm_open: |
| 136 | return rc; |
| 137 | } |
| 138 | |
| 139 | static int ipc_sock_send(struct ipc_per_trx_sock_state *state, struct msgb *msg); |
| 140 | |
| 141 | static struct msgb *ipc_msgb_alloc(uint8_t msg_type) |
| 142 | { |
| 143 | struct msgb *msg; |
| 144 | struct ipc_sk_if *ipc_prim; |
| 145 | |
| 146 | msg = msgb_alloc(sizeof(struct ipc_sk_if) + 1000, "ipc_sock_tx"); |
| 147 | if (!msg) |
| 148 | return NULL; |
| 149 | msgb_put(msg, sizeof(struct ipc_sk_if) + 1000); |
| 150 | ipc_prim = (struct ipc_sk_if *)msg->data; |
| 151 | ipc_prim->msg_type = msg_type; |
| 152 | |
| 153 | return msg; |
| 154 | } |
| 155 | |
| 156 | static int ipc_tx_greeting_req(struct ipc_per_trx_sock_state *state, uint8_t req_version) |
| 157 | { |
| 158 | struct msgb *msg; |
| 159 | struct ipc_sk_if *ipc_prim; |
| 160 | |
| 161 | LOGC(DDEV, NOTICE) << "Tx Greeting Req (" << IPC_IF_MSG_GREETING_REQ << ")\n"; |
| 162 | |
| 163 | msg = ipc_msgb_alloc(IPC_IF_MSG_GREETING_REQ); |
| 164 | if (!msg) { |
| 165 | LOGC(DDEV, INFO) << "ipc_msgb_alloc() returns NULL!"; |
| 166 | return -ENOMEM; |
| 167 | } |
| 168 | ipc_prim = (struct ipc_sk_if *)msg->data; |
| 169 | ipc_prim->u.greeting_req.req_version = req_version; |
| 170 | |
| 171 | return ipc_sock_send(state, msg); |
| 172 | } |
| 173 | |
| 174 | static int ipc_tx_info_req(struct ipc_per_trx_sock_state *state) |
| 175 | { |
| 176 | struct msgb *msg; |
| 177 | //struct ipc_sk_if *ipc_prim; |
| 178 | |
| 179 | LOGC(DDEV, NOTICE) << "Tx INFO Req\n"; |
| 180 | |
| 181 | msg = ipc_msgb_alloc(IPC_IF_MSG_INFO_REQ); |
| 182 | if (!msg) |
| 183 | return -ENOMEM; |
| 184 | |
| 185 | //ipc_prim = (struct ipc_sk_if *) msg->data; |
| 186 | |
| 187 | return ipc_sock_send(state, msg); |
| 188 | } |
| 189 | |
| 190 | int IPCDevice::ipc_tx_open_req(struct ipc_per_trx_sock_state *state, uint32_t num_chans, uint32_t ref) |
| 191 | { |
| 192 | struct msgb *msg; |
| 193 | struct ipc_sk_if *ipc_prim; |
| 194 | struct ipc_sk_if_open_req_chan *chan_info; |
| 195 | |
| 196 | LOGC(DDEV, NOTICE) << "Tx Open Req\n"; |
| 197 | |
| 198 | msg = ipc_msgb_alloc(IPC_IF_MSG_OPEN_REQ); |
| 199 | if (!msg) { |
| 200 | return -ENOMEM; |
| 201 | } |
| 202 | ipc_prim = (struct ipc_sk_if *)msg->data; |
| 203 | ipc_prim->u.open_req.num_chans = num_chans; |
| 204 | |
| 205 | /* FIXME: this is actually the sps value, not the sample rate! |
| 206 | * sample rate is looked up according to the sps rate by uhd backend */ |
| 207 | ipc_prim->u.open_req.rx_sample_freq_num = rx_sps; |
| 208 | ipc_prim->u.open_req.rx_sample_freq_den = 1; |
| 209 | ipc_prim->u.open_req.tx_sample_freq_num = tx_sps; |
| 210 | ipc_prim->u.open_req.tx_sample_freq_den = 1; |
| 211 | |
| 212 | switch (ref) { |
| 213 | case ReferenceType::REF_EXTERNAL: |
| 214 | ipc_prim->u.open_req.clockref = FEATURE_MASK_CLOCKREF_EXTERNAL; |
| 215 | break; |
| 216 | case ReferenceType::REF_INTERNAL: |
| 217 | case ReferenceType::REF_GPS: |
| 218 | ipc_prim->u.open_req.clockref = FEATURE_MASK_CLOCKREF_INTERNAL; |
| 219 | break; |
| 220 | } |
| 221 | |
| 222 | /* FIXME: clock ref part of config, not open */ |
| 223 | ipc_prim->u.open_req.clockref = FEATURE_MASK_CLOCKREF_EXTERNAL; |
| 224 | |
| 225 | for (unsigned int i = 0; i < num_chans; i++) { |
| 226 | chan_info = &ipc_prim->u.open_req.chan_info[i]; |
| 227 | OSMO_STRLCPY_ARRAY(chan_info->rx_path, rx_paths[i].c_str()); |
| 228 | OSMO_STRLCPY_ARRAY(chan_info->tx_path, tx_paths[i].c_str()); |
| 229 | } |
| 230 | |
| 231 | return ipc_sock_send(state, msg); |
| 232 | } |
| 233 | |
| 234 | static void ipc_sock_timeout(void *_priv) |
| 235 | { |
| 236 | LOGC(DDEV, INFO) << "UNIX SOCKET TIMEOUT!"; |
| 237 | exit(1); |
| 238 | } |
| 239 | |
| 240 | int IPCDevice::ipc_rx_greeting_cnf(const struct ipc_sk_if_greeting *greeting_cnf) |
| 241 | { |
| 242 | if (greeting_cnf->req_version == IPC_SOCK_API_VERSION) { |
| 243 | LOGC(DDEV, NOTICE) << "Rx Greeting CNF: correct sock API version" << greeting_cnf->req_version; |
| 244 | tmp_state = IPC_IF_MSG_GREETING_CNF; |
| 245 | } else { |
| 246 | LOGC(DDEV, ERROR) << "Wrong IPC SOCK API VERSION RECEIVED!" << greeting_cnf->req_version; |
| 247 | exit(1); |
| 248 | } |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | int IPCDevice::ipc_rx_info_cnf(const struct ipc_sk_if_info_cnf *info_cnf) |
| 253 | { |
| 254 | current_info_cnf = *info_cnf; |
| 255 | unsigned int i; |
| 256 | |
| 257 | if (info_cnf->max_num_chans < chans) { |
| 258 | LOGC(DDEV, ERROR) << "chan num mismatch:" << info_cnf->max_num_chans << " vs " << chans; |
| 259 | return -1; |
| 260 | } |
| 261 | |
| 262 | /* Here: |
| 263 | * verify info_cnf->max_num_chans >= requested chans |
| 264 | * verify supports setting reflock as asked by user looking in info_cnf->feature_mask |
| 265 | * cache locally min/max tx/rxGain values from info_cnf |
| 266 | * do whatever validations or print info_cnf->dev_desc |
| 267 | * cache rx/tx paths per channel, and make sure it matches the one the user wants to set |
| 268 | */ |
| 269 | |
| 270 | LOGC(DDEV, NOTICE) |
| 271 | << "Rx Info CNF:" |
| 272 | << " name=" << info_cnf->dev_desc << std::endl |
| 273 | << " max_num_chans=" << info_cnf->max_num_chans << " feature_mask=" << info_cnf->feature_mask; |
| 274 | for (i = 0; i < info_cnf->max_num_chans; i++) { |
| 275 | int j = 0; |
| 276 | bool rx_found = false, tx_found = false; |
| 277 | while (strcmp(info_cnf->chan_info[i].rx_path[j], "") != 0) { |
| 278 | LOGC(DDEV, NOTICE) |
| 279 | << "chan " << i << ": RxPath[" << j << "]: " << info_cnf->chan_info[i].rx_path[j] |
| 280 | << " min_rx_gain=" << info_cnf->chan_info[i].min_rx_gain |
| 281 | << " max_rx_gain=" << info_cnf->chan_info[i].max_rx_gain |
| 282 | << " min_tx_gain=" << info_cnf->chan_info[i].min_tx_gain |
| 283 | << " max_tx_gain=" << info_cnf->chan_info[i].max_tx_gain; |
| 284 | |
| 285 | if (rx_paths.size() < (i + 1) || |
| 286 | strcmp(rx_paths[i].c_str(), info_cnf->chan_info[i].rx_path[j]) == 0) { |
| 287 | rx_found = true; |
| 288 | break; |
| 289 | } |
| 290 | j++; |
| 291 | } |
| 292 | j = 0; |
| 293 | while (strcmp(info_cnf->chan_info[i].tx_path[j], "") != 0) { |
| 294 | LOGC(DDEV, NOTICE) |
| 295 | << "chan " << i << ": TxPath[" << j << "]: " << info_cnf->chan_info[i].tx_path[j]; |
| 296 | if (tx_paths.size() < (i + 1) || |
| 297 | strcmp(tx_paths[i].c_str(), info_cnf->chan_info[i].tx_path[j]) == 0) { |
| 298 | tx_found = true; |
| 299 | break; |
| 300 | } |
| 301 | j++; |
| 302 | } |
| 303 | |
| 304 | if (!rx_found) { |
| 305 | LOGC(DDEV, ERROR) << "rx antenna not found: " << rx_paths[i]; |
| 306 | exit(0); |
| 307 | } |
| 308 | if (!tx_found) { |
| 309 | LOGC(DDEV, ERROR) << "tx antenna not found: " << rx_paths[i]; |
| 310 | exit(0); |
| 311 | } |
| 312 | } |
| 313 | tmp_state = IPC_IF_MSG_INFO_CNF; |
| 314 | return 0; |
| 315 | } |
| 316 | |
| 317 | int IPCDevice::ipc_rx_open_cnf(const struct ipc_sk_if_open_cnf *open_cnf) |
| 318 | { |
| 319 | unsigned int i; |
| 320 | current_open_cnf = *open_cnf; |
| 321 | |
| 322 | LOGC(DDEV, NOTICE) |
| 323 | << "Rx Open CNF:" |
| 324 | << " return_code=" << (unsigned int)open_cnf->return_code << " shm_name=" << open_cnf->shm_name; |
| 325 | LOGC(DDEV, NOTICE) << "Rx Open CNF:" |
| 326 | << " ipc device path delay: " << (unsigned int)open_cnf->path_delay; |
| 327 | for (i = 0; i < chans; i++) { |
| 328 | int rc; |
| 329 | LOGC(DDEV, NOTICE) << "chan " << i << ": sk_path=" << open_cnf->chan_info[i].chan_ipc_sk_path; |
| 330 | |
| 331 | /* FIXME: current limit IPC_MAX_NUM_TRX chans, make dynamic */ |
| 332 | if (i < IPC_MAX_NUM_TRX) { |
| 333 | struct ipc_per_trx_sock_state *state = &sk_chan_state[i]; |
| 334 | |
| 335 | INIT_LLIST_HEAD(&state->upqueue); |
| 336 | rc = osmo_sock_unix_init_ofd(&state->conn_bfd, SOCK_SEQPACKET, 0, |
| 337 | open_cnf->chan_info[i].chan_ipc_sk_path, OSMO_SOCK_F_CONNECT); |
| 338 | if (rc < 0) { |
| 339 | LOGC(DDEV, ERROR) << "Failed to connect to the BTS (" |
| 340 | << open_cnf->chan_info[i].chan_ipc_sk_path << "). " |
| 341 | << "Retrying...\n"; |
| 342 | osmo_timer_setup(&state->timer, ipc_sock_timeout, NULL); |
| 343 | osmo_timer_schedule(&state->timer, 5, 0); |
| 344 | return -1; |
| 345 | } |
| 346 | state->conn_bfd.cb = ipc_chan_sock_cb; |
| 347 | state->conn_bfd.data = this; |
| 348 | state->conn_bfd.priv_nr = i; |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | OSMO_STRLCPY_ARRAY(shm_name, open_cnf->shm_name); |
| 353 | if (ipc_shm_connect(shm_name) < 0) |
| 354 | return -1; |
| 355 | shm_dec = ipc_shm_decode_region(NULL, (ipc_shm_raw_region *)shm); |
| 356 | LOGC(DDEV, NOTICE) << "shm: num_chans=" << shm_dec->num_chans; |
| 357 | |
| 358 | /* server inits both producers */ |
| 359 | for (unsigned int i = 0; i < shm_dec->num_chans; i++) { |
| 360 | LOGC(DDEV, NOTICE) |
| 361 | << "shm: chan" << i << "/dl: num_buffers=" << shm_dec->channels[i]->dl_stream->num_buffers; |
| 362 | LOGC(DDEV, NOTICE) |
| 363 | << "shm: chan" << i << "/dl: buffer_size=" << shm_dec->channels[i]->dl_stream->buffer_size; |
| 364 | LOGC(DDEV, NOTICE) |
| 365 | << "shm: chan" << i << "/ul: num_buffers=" << shm_dec->channels[i]->ul_stream->num_buffers; |
| 366 | LOGC(DDEV, NOTICE) |
| 367 | << "shm: chan" << i << "/ul: buffer_size=" << shm_dec->channels[i]->ul_stream->buffer_size; |
| 368 | shm_io_rx_streams.push_back(ipc_shm_init_consumer(shm_dec->channels[i]->ul_stream)); |
| 369 | shm_io_tx_streams.push_back(ipc_shm_init_consumer(shm_dec->channels[i]->dl_stream)); |
| 370 | // we should init a producer here, but delegating all producers and therefore lock management |
| 371 | // to the other side is the reasonable approach to circumvent shutdown issues |
| 372 | } |
| 373 | |
| 374 | tmp_state = IPC_IF_MSG_OPEN_CNF; |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | int IPCDevice::ipc_rx(uint8_t msg_type, struct ipc_sk_if *ipc_prim) |
| 379 | { |
| 380 | int rc = 0; |
| 381 | |
| 382 | switch (msg_type) { |
| 383 | case IPC_IF_MSG_GREETING_CNF: |
| 384 | rc = ipc_rx_greeting_cnf(&ipc_prim->u.greeting_cnf); |
| 385 | break; |
| 386 | case IPC_IF_MSG_INFO_CNF: |
| 387 | rc = ipc_rx_info_cnf(&ipc_prim->u.info_cnf); |
| 388 | break; |
| 389 | case IPC_IF_MSG_OPEN_CNF: |
| 390 | rc = ipc_rx_open_cnf(&ipc_prim->u.open_cnf); |
| 391 | break; |
| 392 | default: |
| 393 | LOGP(DDEV, LOGL_ERROR, "Received unknown IPC msg type %d\n", msg_type); |
| 394 | rc = -EINVAL; |
| 395 | } |
| 396 | |
| 397 | return rc; |
| 398 | } |
| 399 | |
| 400 | int IPCDevice::ipc_rx_chan_start_cnf(ipc_sk_chan_if_op_rc *ret, uint8_t chan_nr) |
| 401 | { |
| 402 | if (chan_nr >= chans) { |
| 403 | LOGC(DDEV, NOTICE) << "shm: illegal start response for chan #" << chan_nr << " ?!?"; |
| 404 | return 0; |
| 405 | } |
| 406 | return 0; |
| 407 | } |
| 408 | int IPCDevice::ipc_rx_chan_stop_cnf(ipc_sk_chan_if_op_rc *ret, uint8_t chan_nr) |
| 409 | { |
| 410 | if (chan_nr >= chans) { |
| 411 | LOGC(DDEV, NOTICE) << "shm: illegal stop response for chan #" << chan_nr << " ?!?"; |
| 412 | return 0; |
| 413 | } |
| 414 | return 0; |
| 415 | } |
| 416 | int IPCDevice::ipc_rx_chan_setgain_cnf(ipc_sk_chan_if_gain *ret, uint8_t chan_nr) |
| 417 | { |
| 418 | if (chan_nr >= chans) { |
| 419 | LOGC(DDEV, NOTICE) << "shm: illegal setgain response for chan #" << chan_nr << " ?!?"; |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | ret->is_tx ? tx_gains[chan_nr] = ret->gain : rx_gains[chan_nr] = ret->gain; |
| 424 | return 0; |
| 425 | } |
| 426 | int IPCDevice::ipc_rx_chan_settxattn_cnf(ipc_sk_chan_if_tx_attenuation *ret, uint8_t chan_nr) |
| 427 | { |
| 428 | if (chan_nr >= chans) { |
| 429 | LOGC(DDEV, NOTICE) << "shm: illegal tx attn response for chan #" << chan_nr << " ?!?"; |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | tx_attenuation[chan_nr] = ret->attenuation; |
| 434 | return 0; |
| 435 | } |
| 436 | int IPCDevice::ipc_rx_chan_setfreq_cnf(ipc_sk_chan_if_freq_cnf *ret, uint8_t chan_nr) |
| 437 | { |
| 438 | if (chan_nr >= chans) { |
| 439 | LOGC(DDEV, NOTICE) << "shm: illegal setfreq response for chan #" << chan_nr << " ?!?"; |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | return 0; |
| 444 | } |
| 445 | int IPCDevice::ipc_rx_chan_notify_underflow(ipc_sk_chan_if_notfiy *ret, uint8_t chan_nr) |
| 446 | { |
| 447 | if (chan_nr >= chans) { |
| 448 | LOGC(DDEV, NOTICE) << "shm: illegal underfloww notification for chan #" << chan_nr << " ?!?"; |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | m_ctr[chan_nr].tx_underruns += 1; |
| 453 | osmo_signal_dispatch(SS_DEVICE, S_DEVICE_COUNTER_CHANGE, &m_ctr[chan_nr]); |
| 454 | |
| 455 | return 0; |
| 456 | } |
| 457 | int IPCDevice::ipc_rx_chan_notify_overflow(ipc_sk_chan_if_notfiy *ret, uint8_t chan_nr) |
| 458 | { |
| 459 | if (chan_nr >= chans) { |
| 460 | LOGC(DDEV, NOTICE) << "shm: illegal overflow notification for chan #" << chan_nr << " ?!?"; |
| 461 | return 0; |
| 462 | } |
| 463 | |
| 464 | m_ctr[chan_nr].rx_overruns += 1; |
| 465 | osmo_signal_dispatch(SS_DEVICE, S_DEVICE_COUNTER_CHANGE, &m_ctr[chan_nr]); |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | int IPCDevice::ipc_chan_rx(uint8_t msg_type, struct ipc_sk_chan_if *ipc_prim, uint8_t chan_nr) |
| 470 | { |
| 471 | int rc = 0; |
| 472 | |
| 473 | switch (msg_type) { |
| 474 | case IPC_IF_MSG_START_CNF: |
| 475 | rc = ipc_rx_chan_start_cnf(&ipc_prim->u.start_cnf, chan_nr); |
| 476 | break; |
| 477 | case IPC_IF_MSG_STOP_CNF: |
| 478 | rc = ipc_rx_chan_stop_cnf(&ipc_prim->u.stop_cnf, chan_nr); |
| 479 | break; |
| 480 | case IPC_IF_MSG_SETGAIN_CNF: |
| 481 | rc = ipc_rx_chan_setgain_cnf(&ipc_prim->u.set_gain_cnf, chan_nr); |
| 482 | break; |
| 483 | case IPC_IF_MSG_SETFREQ_CNF: |
| 484 | rc = ipc_rx_chan_setfreq_cnf(&ipc_prim->u.set_freq_cnf, chan_nr); |
| 485 | break; |
| 486 | case IPC_IF_NOTIFY_UNDERFLOW: |
| 487 | rc = ipc_rx_chan_notify_underflow(&ipc_prim->u.notify, chan_nr); |
| 488 | break; |
| 489 | case IPC_IF_NOTIFY_OVERFLOW: |
| 490 | rc = ipc_rx_chan_notify_overflow(&ipc_prim->u.notify, chan_nr); |
| 491 | break; |
| 492 | case IPC_IF_MSG_SETTXATTN_CNF: |
| 493 | rc = ipc_rx_chan_settxattn_cnf(&ipc_prim->u.txatten_cnf, chan_nr); |
| 494 | break; |
| 495 | default: |
| 496 | LOGP(DMAIN, LOGL_ERROR, "Received unknown IPC msg type %d\n", msg_type); |
| 497 | rc = -EINVAL; |
| 498 | } |
| 499 | |
| 500 | return rc; |
| 501 | } |
| 502 | |
| 503 | static int ipc_sock_send(struct ipc_per_trx_sock_state *state, struct msgb *msg) |
| 504 | { |
| 505 | struct osmo_fd *conn_bfd; |
| 506 | |
| 507 | if (!state) { |
| 508 | LOGP(DMAIN, LOGL_INFO, |
| 509 | "IPC socket not created, " |
| 510 | "dropping message\n"); |
| 511 | msgb_free(msg); |
| 512 | return -EINVAL; |
| 513 | } |
| 514 | conn_bfd = &state->conn_bfd; |
| 515 | if (conn_bfd->fd <= 0) { |
| 516 | LOGP(DMAIN, LOGL_NOTICE, |
| 517 | "IPC socket not connected, " |
| 518 | "dropping message\n"); |
| 519 | msgb_free(msg); |
| 520 | return -EIO; |
| 521 | } |
| 522 | msgb_enqueue(&state->upqueue, msg); |
Harald Welte | 94def47 | 2020-10-19 12:28:26 +0200 | [diff] [blame] | 523 | osmo_fd_write_enable(conn_bfd); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 524 | |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | void IPCDevice::ipc_sock_close(struct ipc_per_trx_sock_state *state) |
| 529 | { |
| 530 | if (state == 0) |
| 531 | return; |
| 532 | |
| 533 | struct osmo_fd *bfd = &state->conn_bfd; |
| 534 | |
| 535 | if (bfd->fd <= 0) |
| 536 | return; |
| 537 | |
| 538 | LOGP(DDEV, LOGL_NOTICE, "IPC socket has LOST connection\n"); |
| 539 | |
| 540 | close(bfd->fd); |
| 541 | bfd->fd = -1; |
| 542 | osmo_fd_unregister(bfd); |
| 543 | |
| 544 | /* flush the queue */ |
| 545 | while (!llist_empty(&state->upqueue)) { |
| 546 | struct msgb *msg = msgb_dequeue(&state->upqueue); |
| 547 | msgb_free(msg); |
| 548 | } |
| 549 | } |
| 550 | |
| 551 | int IPCDevice::ipc_sock_read(struct osmo_fd *bfd) |
| 552 | { |
| 553 | struct ipc_sk_if *ipc_prim; |
| 554 | struct msgb *msg; |
| 555 | int rc; |
| 556 | |
| 557 | msg = msgb_alloc(sizeof(*ipc_prim) + 1000, "ipc_sock_rx"); |
| 558 | if (!msg) |
| 559 | return -ENOMEM; |
| 560 | |
| 561 | ipc_prim = (struct ipc_sk_if *)msg->tail; |
| 562 | |
| 563 | rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0); |
| 564 | if (rc == 0) |
| 565 | goto close; |
| 566 | |
| 567 | if (rc < 0) { |
| 568 | if (errno == EAGAIN) { |
| 569 | msgb_free(msg); |
| 570 | return 0; |
| 571 | } |
| 572 | goto close; |
| 573 | } |
| 574 | |
| 575 | if ((size_t)rc < sizeof(*ipc_prim)) { |
| 576 | LOGP(DDEV, LOGL_ERROR, |
| 577 | "Received %d bytes on Unix Socket, but primitive size " |
| 578 | "is %zu, discarding\n", |
| 579 | rc, sizeof(*ipc_prim)); |
| 580 | msgb_free(msg); |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | rc = ipc_rx(ipc_prim->msg_type, ipc_prim); |
| 585 | |
| 586 | /* as we always synchronously process the message in IPC_rx() and |
| 587 | * its callbacks, we can free the message here. */ |
| 588 | msgb_free(msg); |
| 589 | |
| 590 | return rc; |
| 591 | |
| 592 | close: |
| 593 | msgb_free(msg); |
| 594 | ipc_sock_close(&master_sk_state); |
| 595 | return -1; |
| 596 | } |
| 597 | |
| 598 | int IPCDevice::ipc_chan_sock_read(struct osmo_fd *bfd) |
| 599 | { |
| 600 | struct ipc_sk_chan_if *ipc_prim; |
| 601 | struct msgb *msg; |
| 602 | int rc; |
| 603 | |
| 604 | msg = msgb_alloc(sizeof(*ipc_prim) + 1000, "ipc_chan_sock_rx"); |
| 605 | if (!msg) |
| 606 | return -ENOMEM; |
| 607 | |
| 608 | ipc_prim = (struct ipc_sk_chan_if *)msg->tail; |
| 609 | |
| 610 | rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0); |
| 611 | if (rc == 0) |
| 612 | goto close; |
| 613 | |
| 614 | if (rc < 0) { |
| 615 | if (errno == EAGAIN) { |
| 616 | msgb_free(msg); |
| 617 | return 0; |
| 618 | } |
| 619 | goto close; |
| 620 | } |
| 621 | |
| 622 | if ((size_t)rc < sizeof(*ipc_prim)) { |
| 623 | LOGP(DDEV, LOGL_ERROR, |
| 624 | "Received %d bytes on Unix Socket, but primitive size " |
| 625 | "is %zu, discarding\n", |
| 626 | rc, sizeof(*ipc_prim)); |
| 627 | msgb_free(msg); |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | /* store mask of last received messages so we can check later */ |
| 632 | sk_chan_state[bfd->priv_nr].messages_processed_mask |= (1 << (ipc_prim->msg_type - IPC_IF_CHAN_MSG_OFFSET)); |
| 633 | |
| 634 | rc = ipc_chan_rx(ipc_prim->msg_type, ipc_prim, bfd->priv_nr); |
| 635 | |
| 636 | /* as we always synchronously process the message in IPC_rx() and |
| 637 | * its callbacks, we can free the message here. */ |
| 638 | msgb_free(msg); |
| 639 | |
| 640 | return rc; |
| 641 | |
| 642 | close: |
| 643 | msgb_free(msg); |
| 644 | ipc_sock_close(&sk_chan_state[bfd->priv_nr]); |
| 645 | return -1; |
| 646 | } |
| 647 | |
| 648 | int IPCDevice::ipc_sock_write(struct osmo_fd *bfd) |
| 649 | { |
| 650 | int rc; |
| 651 | |
| 652 | while (!llist_empty(&master_sk_state.upqueue)) { |
| 653 | struct msgb *msg, *msg2; |
| 654 | struct ipc_sk_if *ipc_prim; |
| 655 | |
| 656 | /* peek at the beginning of the queue */ |
| 657 | msg = llist_entry(master_sk_state.upqueue.next, struct msgb, list); |
| 658 | ipc_prim = (struct ipc_sk_if *)msg->data; |
| 659 | |
Harald Welte | 94def47 | 2020-10-19 12:28:26 +0200 | [diff] [blame] | 660 | osmo_fd_write_disable(bfd); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 661 | |
| 662 | /* bug hunter 8-): maybe someone forgot msgb_put(...) ? */ |
| 663 | if (!msgb_length(msg)) { |
| 664 | LOGP(DDEV, LOGL_ERROR, |
| 665 | "message type (%d) with ZERO " |
| 666 | "bytes!\n", |
| 667 | ipc_prim->msg_type); |
| 668 | goto dontsend; |
| 669 | } |
| 670 | |
| 671 | /* try to send it over the socket */ |
| 672 | rc = write(bfd->fd, msgb_data(msg), msgb_length(msg)); |
| 673 | if (rc == 0) |
| 674 | goto close; |
| 675 | if (rc < 0) { |
| 676 | if (errno == EAGAIN) { |
Harald Welte | 94def47 | 2020-10-19 12:28:26 +0200 | [diff] [blame] | 677 | osmo_fd_write_enable(bfd); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 678 | break; |
| 679 | } |
| 680 | goto close; |
| 681 | } |
| 682 | |
| 683 | dontsend: |
| 684 | /* _after_ we send it, we can deueue */ |
| 685 | msg2 = msgb_dequeue(&master_sk_state.upqueue); |
| 686 | assert(msg == msg2); |
| 687 | msgb_free(msg); |
| 688 | } |
| 689 | return 0; |
| 690 | |
| 691 | close: |
| 692 | ipc_sock_close(&master_sk_state); |
| 693 | return -1; |
| 694 | } |
| 695 | |
| 696 | int IPCDevice::ipc_chan_sock_write(struct osmo_fd *bfd) |
| 697 | { |
| 698 | int rc; |
| 699 | |
| 700 | while (!llist_empty(&sk_chan_state[bfd->priv_nr].upqueue)) { |
| 701 | struct msgb *msg, *msg2; |
| 702 | struct ipc_sk_chan_if *ipc_prim; |
| 703 | |
| 704 | /* peek at the beginning of the queue */ |
| 705 | msg = llist_entry(sk_chan_state[bfd->priv_nr].upqueue.next, struct msgb, list); |
| 706 | ipc_prim = (struct ipc_sk_chan_if *)msg->data; |
Harald Welte | 94def47 | 2020-10-19 12:28:26 +0200 | [diff] [blame] | 707 | osmo_fd_write_disable(bfd); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 708 | /* bug hunter 8-): maybe someone forgot msgb_put(...) ? */ |
| 709 | if (!msgb_length(msg)) { |
| 710 | LOGP(DDEV, LOGL_ERROR, |
| 711 | "message type (%d) with ZERO " |
| 712 | "bytes!\n", |
| 713 | ipc_prim->msg_type); |
| 714 | goto dontsend; |
| 715 | } |
| 716 | |
| 717 | /* try to send it over the socket */ |
| 718 | rc = write(bfd->fd, msgb_data(msg), msgb_length(msg)); |
| 719 | if (rc == 0) |
| 720 | goto close; |
| 721 | if (rc < 0) { |
| 722 | if (errno == EAGAIN) { |
Harald Welte | 94def47 | 2020-10-19 12:28:26 +0200 | [diff] [blame] | 723 | osmo_fd_write_enable(bfd); |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 724 | break; |
| 725 | } |
| 726 | goto close; |
| 727 | } |
| 728 | |
| 729 | dontsend: |
| 730 | /* _after_ we send it, we can dequeue */ |
| 731 | msg2 = msgb_dequeue(&sk_chan_state[bfd->priv_nr].upqueue); |
| 732 | assert(msg == msg2); |
| 733 | msgb_free(msg); |
| 734 | } |
| 735 | return 0; |
| 736 | |
| 737 | close: |
| 738 | ipc_sock_close(&sk_chan_state[bfd->priv_nr]); |
| 739 | return -1; |
| 740 | } |
| 741 | |
| 742 | static int ipc_sock_cb(struct osmo_fd *bfd, unsigned int flags) |
| 743 | { |
| 744 | IPCDevice *device = static_cast<IPCDevice *>(bfd->data); |
| 745 | int rc = 0; |
| 746 | |
Harald Welte | 08970c5 | 2020-10-18 22:41:40 +0200 | [diff] [blame] | 747 | if (flags & OSMO_FD_READ) |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 748 | rc = device->ipc_sock_read(bfd); |
| 749 | if (rc < 0) |
| 750 | return rc; |
| 751 | |
Harald Welte | 08970c5 | 2020-10-18 22:41:40 +0200 | [diff] [blame] | 752 | if (flags & OSMO_FD_WRITE) |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 753 | rc = device->ipc_sock_write(bfd); |
| 754 | |
| 755 | return rc; |
| 756 | } |
| 757 | |
| 758 | static int ipc_chan_sock_cb(struct osmo_fd *bfd, unsigned int flags) |
| 759 | { |
| 760 | IPCDevice *device = static_cast<IPCDevice *>(bfd->data); |
| 761 | int rc = 0; |
| 762 | |
Harald Welte | 08970c5 | 2020-10-18 22:41:40 +0200 | [diff] [blame] | 763 | if (flags & OSMO_FD_READ) |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 764 | rc = device->ipc_chan_sock_read(bfd); |
| 765 | if (rc < 0) |
| 766 | return rc; |
| 767 | |
Harald Welte | 08970c5 | 2020-10-18 22:41:40 +0200 | [diff] [blame] | 768 | if (flags & OSMO_FD_WRITE) |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 769 | rc = device->ipc_chan_sock_write(bfd); |
| 770 | |
| 771 | return rc; |
| 772 | } |
| 773 | |
| 774 | int IPCDevice::open(const std::string &args, int ref, bool swap_channels) |
| 775 | { |
| 776 | std::string k, v; |
| 777 | std::string::size_type keyend; |
| 778 | int rc; |
| 779 | |
| 780 | if ((keyend = args.find('=')) != std::string::npos) { |
| 781 | k = args.substr(0, keyend++); |
| 782 | v = args.substr(keyend); |
| 783 | } |
| 784 | if (k != "ipc_msock" || !v.length()) { |
| 785 | LOGC(DDEV, ERROR) << "Invalid device args provided, expected \"dev-args ipc_msock=/path/to/socket\"\n"; |
| 786 | return -1; |
| 787 | } |
| 788 | |
| 789 | LOGC(DDEV, INFO) << "Opening IPC device" << v << ".."; |
| 790 | |
| 791 | INIT_LLIST_HEAD(&master_sk_state.upqueue); |
| 792 | rc = osmo_sock_unix_init_ofd(&master_sk_state.conn_bfd, SOCK_SEQPACKET, 0, v.c_str(), OSMO_SOCK_F_CONNECT); |
| 793 | if (rc < 0) { |
Pau Espin Pedrol | 7e83f18 | 2020-12-07 19:28:44 +0100 | [diff] [blame] | 794 | LOGC(DDEV, ERROR) << "Failed to connect to the IPC device (" << v << "). " |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 795 | << "Retrying...\n"; |
| 796 | osmo_timer_setup(&master_sk_state.timer, ipc_sock_timeout, NULL); |
| 797 | osmo_timer_schedule(&master_sk_state.timer, 5, 0); |
| 798 | return -1; |
| 799 | } |
| 800 | master_sk_state.conn_bfd.cb = ipc_sock_cb; |
| 801 | master_sk_state.conn_bfd.data = this; |
| 802 | |
| 803 | ipc_tx_greeting_req(&master_sk_state, IPC_SOCK_API_VERSION); |
| 804 | /* Wait until confirmation is recieved */ |
| 805 | while (tmp_state != IPC_IF_MSG_GREETING_CNF) |
| 806 | osmo_select_main(0); |
| 807 | |
| 808 | ipc_tx_info_req(&master_sk_state); |
| 809 | /* Wait until confirmation is recieved */ |
| 810 | while (tmp_state != IPC_IF_MSG_INFO_CNF) |
| 811 | osmo_select_main(0); |
| 812 | |
| 813 | ipc_tx_open_req(&master_sk_state, chans, ref); |
| 814 | /* Wait until confirmation is recieved */ |
| 815 | while (tmp_state != IPC_IF_MSG_OPEN_CNF) |
| 816 | osmo_select_main(0); |
| 817 | LOGC(DDEV, NOTICE) << "Device driver opened successfuly!"; |
| 818 | |
| 819 | /* configure antennas */ |
| 820 | if (!set_antennas()) { |
| 821 | LOGC(DDEV, FATAL) << "IPC antenna setting failed"; |
| 822 | goto out_close; |
| 823 | } |
| 824 | |
| 825 | return iface == MULTI_ARFCN ? MULTI_ARFCN : NORMAL; |
| 826 | |
| 827 | out_close: |
| 828 | LOGC(DDEV, FATAL) << "Error in IPC open, closing"; |
| 829 | return -1; |
| 830 | } |
| 831 | |
| 832 | void IPCDevice::manually_poll_sock_fds() |
| 833 | { |
| 834 | struct timeval wait = { 0, 100000 }; |
| 835 | fd_set crfds, cwfds; |
Vadim Yanitskiy | a686277 | 2021-10-24 22:47:50 +0300 | [diff] [blame] | 836 | char err_buf[256]; |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 837 | int max_fd = 0; |
| 838 | |
| 839 | FD_ZERO(&crfds); |
| 840 | FD_ZERO(&cwfds); |
| 841 | for (unsigned int i = 0; i < chans; i++) { |
| 842 | struct osmo_fd *curr_fd = &sk_chan_state[i].conn_bfd; |
| 843 | max_fd = curr_fd->fd > max_fd ? curr_fd->fd : max_fd; |
| 844 | |
| 845 | if (curr_fd->when & OSMO_FD_READ) |
| 846 | FD_SET(curr_fd->fd, &crfds); |
| 847 | if (curr_fd->when & OSMO_FD_WRITE) |
| 848 | FD_SET(curr_fd->fd, &cwfds); |
| 849 | } |
| 850 | |
Vadim Yanitskiy | a686277 | 2021-10-24 22:47:50 +0300 | [diff] [blame] | 851 | if (select(max_fd + 1, &crfds, &cwfds, 0, &wait) < 0) { |
| 852 | LOGP(DDEV, LOGL_ERROR, "select() failed: %s\n", |
| 853 | strerror_r(errno, err_buf, sizeof(err_buf))); |
| 854 | return; |
| 855 | } |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 856 | |
| 857 | for (unsigned int i = 0; i < chans; i++) { |
| 858 | int flags = 0; |
| 859 | struct osmo_fd *ofd = &sk_chan_state[i].conn_bfd; |
| 860 | |
| 861 | if (FD_ISSET(ofd->fd, &crfds)) { |
| 862 | flags |= OSMO_FD_READ; |
| 863 | FD_CLR(ofd->fd, &crfds); |
| 864 | } |
| 865 | |
| 866 | if (FD_ISSET(ofd->fd, &cwfds)) { |
| 867 | flags |= OSMO_FD_WRITE; |
| 868 | FD_CLR(ofd->fd, &cwfds); |
| 869 | } |
| 870 | if (flags) |
| 871 | ipc_chan_sock_cb(ofd, flags); |
| 872 | } |
| 873 | } |
| 874 | |
| 875 | bool IPCDevice::send_chan_wait_rsp(uint32_t chan, struct msgb *msg_to_send, uint32_t expected_rsp_msg_id) |
| 876 | { |
| 877 | struct timeval timer_now, timeout; |
| 878 | |
| 879 | sk_chan_state[chan].messages_processed_mask = 0; |
| 880 | ipc_sock_send(&sk_chan_state[chan], msg_to_send); |
| 881 | |
| 882 | gettimeofday(&timeout, 0); |
| 883 | timeout.tv_sec += 2; |
| 884 | |
| 885 | while (!(sk_chan_state[chan].messages_processed_mask & (1 << (expected_rsp_msg_id - IPC_IF_CHAN_MSG_OFFSET)))) { |
| 886 | /* just poll here, we're already in select, so there is no other way to drive |
| 887 | * the fds and "wait" for a response or retry */ |
| 888 | manually_poll_sock_fds(); |
| 889 | |
| 890 | gettimeofday(&timer_now, 0); |
| 891 | if (timercmp(&timer_now, &timeout, >)) |
| 892 | return false; |
| 893 | } |
| 894 | return true; |
| 895 | } |
| 896 | |
| 897 | bool IPCDevice::send_all_chan_wait_rsp(uint32_t msgid_to_send, uint32_t msgid_to_expect) |
| 898 | { |
| 899 | struct msgb *msg; |
| 900 | struct ipc_sk_chan_if *ipc_prim; |
| 901 | struct timeval timer_now, timeout; |
| 902 | |
| 903 | for (unsigned int i = 0; i < chans; i++) { |
| 904 | msg = ipc_msgb_alloc(msgid_to_send); |
| 905 | if (!msg) |
| 906 | return -ENOMEM; |
| 907 | ipc_prim = (struct ipc_sk_chan_if *)msg->data; |
| 908 | ipc_prim->u.start_req.dummy = 0; |
| 909 | |
| 910 | sk_chan_state[i].messages_processed_mask = 0; |
| 911 | ipc_sock_send(&sk_chan_state[i], msg); |
| 912 | } |
| 913 | |
| 914 | gettimeofday(&timeout, 0); |
| 915 | timeout.tv_sec += 2; |
| 916 | |
| 917 | unsigned int msg_received_count = 0; |
| 918 | while (msg_received_count != chans) { |
| 919 | msg_received_count = 0; |
| 920 | |
| 921 | /* just poll here, we're already in select, so there is no other way to drive |
| 922 | * the fds and "wait" for a response or retry */ |
| 923 | manually_poll_sock_fds(); |
| 924 | |
| 925 | for (unsigned int i = 0; i < sk_chan_state.size(); i++) |
| 926 | if (sk_chan_state[i].messages_processed_mask & |
| 927 | (1 << (msgid_to_expect - IPC_IF_CHAN_MSG_OFFSET))) |
| 928 | msg_received_count++; |
| 929 | |
| 930 | gettimeofday(&timer_now, 0); |
| 931 | if (timercmp(&timer_now, &timeout, >)) |
| 932 | return false; |
| 933 | } |
| 934 | |
| 935 | return true; |
| 936 | } |
| 937 | |
| 938 | /* the call stack is rather difficult here, we're already in select: |
| 939 | >~"#0 IPCDevice::start (this=<optimized out>) at IPCDevice.cpp:789\n" |
| 940 | >~"#1 in RadioInterface::start (this=0x614000001640) at radioInterface.cpp:187\n" |
| 941 | >~"#2 in Transceiver::start (this=<optimized out>) at Transceiver.cpp:293\n" |
| 942 | >~"#3 in Transceiver::ctrl_sock_handle_rx (this=0x61600000b180, chan=0) at Transceiver.cpp:838\n" |
| 943 | >~"#4 in Transceiver::ctrl_sock_cb (bfd=<optimized out>, flags=1) at Transceiver.cpp:168\n" |
| 944 | >~"#5 in osmo_fd_disp_fds (_rset=<optimized out>, _wset=<optimized out>, _eset=<optimized out>) at select.c:227\n" |
| 945 | >~"#6 _osmo_select_main (polling=<optimized out>) at select.c:265\n" |
| 946 | >~"#7 in osmo_select_main (polling=128) at select.c:274\n" |
| 947 | >~"#8 in main (argc=<optimized out>, argv=<optimized out>) at osmo-trx.cpp:649\n" |
| 948 | * */ |
| 949 | bool IPCDevice::start() |
| 950 | { |
| 951 | LOGC(DDEV, INFO) << "starting IPC..."; |
| 952 | |
| 953 | if (started) { |
| 954 | LOGC(DDEV, ERR) << "Device already started"; |
| 955 | return true; |
| 956 | } |
| 957 | |
| 958 | if (!(send_all_chan_wait_rsp(IPC_IF_MSG_START_REQ, IPC_IF_MSG_START_CNF))) { |
| 959 | LOGC(DDEV, ERR) << "start timeout!"; |
| 960 | return false; |
| 961 | } |
| 962 | |
| 963 | int max_bufs_to_flush = 0; |
| 964 | for (unsigned int i = 0; i < shm_dec->num_chans; i++) { |
| 965 | int buf_per_chan = shm_dec->channels[i]->ul_stream->num_buffers; |
| 966 | max_bufs_to_flush = max_bufs_to_flush < buf_per_chan ? buf_per_chan : max_bufs_to_flush; |
| 967 | } |
| 968 | flush_recv(max_bufs_to_flush); |
| 969 | |
| 970 | started = true; |
| 971 | return true; |
| 972 | } |
| 973 | |
| 974 | bool IPCDevice::stop() |
| 975 | { |
| 976 | if (!started) |
| 977 | return true; |
| 978 | |
| 979 | if (!(send_all_chan_wait_rsp(IPC_IF_MSG_STOP_REQ, IPC_IF_MSG_STOP_CNF))) { |
| 980 | LOGC(DDEV, ERR) << "stop timeout!"; |
| 981 | return false; |
| 982 | } |
| 983 | |
| 984 | LOGC(DDEV, NOTICE) << "All channels stopped, terminating..."; |
| 985 | |
Eric | 4080eb7 | 2020-07-16 18:08:30 +0200 | [diff] [blame] | 986 | /* reset internal buffer timestamps */ |
| 987 | for (size_t i = 0; i < rx_buffers.size(); i++) |
| 988 | rx_buffers[i]->reset(); |
| 989 | |
Eric Wild | 1e17c4f | 2020-03-24 17:19:27 +0100 | [diff] [blame] | 990 | started = false; |
| 991 | return true; |
| 992 | } |
| 993 | |
| 994 | double IPCDevice::maxRxGain() |
| 995 | { |
| 996 | return current_info_cnf.chan_info[0].max_rx_gain; |
| 997 | } |
| 998 | |
| 999 | double IPCDevice::minRxGain() |
| 1000 | { |
| 1001 | return current_info_cnf.chan_info[0].min_rx_gain; |
| 1002 | } |
| 1003 | |
| 1004 | int IPCDevice::getNominalTxPower(size_t chan) |
| 1005 | { |
| 1006 | return current_info_cnf.chan_info[chan].nominal_tx_power; |
| 1007 | } |
| 1008 | |
| 1009 | double IPCDevice::setPowerAttenuation(int atten, size_t chan) |
| 1010 | { |
| 1011 | struct msgb *msg; |
| 1012 | struct ipc_sk_chan_if *ipc_prim; |
| 1013 | |
| 1014 | if (chan >= chans) |
| 1015 | return 0; |
| 1016 | |
| 1017 | LOGCHAN(chan, DDEV, NOTICE) << "Setting TX attenuation to " << atten << " dB" |
| 1018 | << " chan " << chan; |
| 1019 | |
| 1020 | msg = ipc_msgb_alloc(IPC_IF_MSG_SETTXATTN_REQ); |
| 1021 | if (!msg) |
| 1022 | return -ENOMEM; |
| 1023 | ipc_prim = (struct ipc_sk_chan_if *)msg->data; |
| 1024 | ipc_prim->u.txatten_req.attenuation = atten; |
| 1025 | |
| 1026 | if (!send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETTXATTN_CNF)) |
| 1027 | LOGCHAN(chan, DDEV, ERROR) << "Setting TX attenuation timeout! "; |
| 1028 | |
| 1029 | return atten; |
| 1030 | } |
| 1031 | |
| 1032 | double IPCDevice::getPowerAttenuation(size_t chan) |
| 1033 | { |
| 1034 | if (chan >= chans) |
| 1035 | return 0; |
| 1036 | |
| 1037 | return tx_attenuation[chan]; |
| 1038 | } |
| 1039 | |
| 1040 | double IPCDevice::setRxGain(double dB, size_t chan) |
| 1041 | { |
| 1042 | struct msgb *msg; |
| 1043 | struct ipc_sk_chan_if *ipc_prim; |
| 1044 | |
| 1045 | if (dB > maxRxGain()) |
| 1046 | dB = maxRxGain(); |
| 1047 | if (dB < minRxGain()) |
| 1048 | dB = minRxGain(); |
| 1049 | |
| 1050 | LOGCHAN(chan, DDEV, NOTICE) << "Setting RX gain to " << dB << " dB"; |
| 1051 | |
| 1052 | msg = ipc_msgb_alloc(IPC_IF_MSG_SETGAIN_REQ); |
| 1053 | if (!msg) |
| 1054 | return -ENOMEM; |
| 1055 | ipc_prim = (struct ipc_sk_chan_if *)msg->data; |
| 1056 | ipc_prim->u.set_gain_req.is_tx = 0; |
| 1057 | ipc_prim->u.set_gain_req.gain = dB; |
| 1058 | |
| 1059 | if (!send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETGAIN_CNF)) |
| 1060 | LOGCHAN(chan, DDEV, ERROR) << "Setting RX gain timeout! "; |
| 1061 | |
| 1062 | return rx_gains[chan]; |
| 1063 | } |
| 1064 | |
| 1065 | bool IPCDevice::flush_recv(size_t num_pkts) |
| 1066 | { |
| 1067 | std::vector<uint16_t> tmp(4096); |
| 1068 | uint64_t tmps; |
| 1069 | uint32_t read = 0; |
| 1070 | |
| 1071 | for (uint32_t j = 0; j < num_pkts; j++) { |
| 1072 | for (unsigned int i = 0; i < chans; i++) |
| 1073 | read = ipc_shm_read(shm_io_rx_streams[i], (uint16_t *)&tmp.front(), 4096 / 2, &tmps, 3); |
| 1074 | } |
| 1075 | ts_initial = tmps + read; |
| 1076 | |
| 1077 | LOGC(DDEV, INFO) << "Initial timestamp " << ts_initial << std::endl; |
| 1078 | return true; |
| 1079 | } |
| 1080 | |
| 1081 | bool IPCDevice::setRxAntenna(const std::string &ant, size_t chan) |
| 1082 | { |
| 1083 | return true; |
| 1084 | } |
| 1085 | |
| 1086 | std::string IPCDevice::getRxAntenna(size_t chan) |
| 1087 | { |
| 1088 | return ""; |
| 1089 | } |
| 1090 | |
| 1091 | bool IPCDevice::setTxAntenna(const std::string &ant, size_t chan) |
| 1092 | { |
| 1093 | return true; |
| 1094 | } |
| 1095 | |
| 1096 | std::string IPCDevice::getTxAntenna(size_t chan) |
| 1097 | { |
| 1098 | return ""; |
| 1099 | } |
| 1100 | |
| 1101 | bool IPCDevice::requiresRadioAlign() |
| 1102 | { |
| 1103 | return false; |
| 1104 | } |
| 1105 | |
| 1106 | GSM::Time IPCDevice::minLatency() |
| 1107 | { |
| 1108 | /* UNUSED */ |
| 1109 | return GSM::Time(0, 0); |
| 1110 | } |
| 1111 | |
| 1112 | /** Returns the starting write Timestamp*/ |
| 1113 | TIMESTAMP IPCDevice::initialWriteTimestamp(void) |
| 1114 | { |
| 1115 | return ts_initial; |
| 1116 | } |
| 1117 | |
| 1118 | /** Returns the starting read Timestamp*/ |
| 1119 | TIMESTAMP IPCDevice::initialReadTimestamp(void) |
| 1120 | { |
| 1121 | return ts_initial; |
| 1122 | } |
| 1123 | |
| 1124 | // NOTE: Assumes sequential reads |
| 1125 | int IPCDevice::readSamples(std::vector<short *> &bufs, int len, bool *overrun, TIMESTAMP timestamp, bool *underrun) |
| 1126 | { |
| 1127 | int rc, num_smpls; //, expect_smpls; |
| 1128 | ssize_t avail_smpls; |
| 1129 | TIMESTAMP expect_timestamp; |
| 1130 | unsigned int i; |
| 1131 | |
| 1132 | if (bufs.size() != chans) { |
| 1133 | LOGC(DDEV, ERROR) << "Invalid channel combination " << bufs.size(); |
| 1134 | return -1; |
| 1135 | } |
| 1136 | |
| 1137 | *overrun = false; |
| 1138 | *underrun = false; |
| 1139 | |
| 1140 | timestamp += current_open_cnf.path_delay; |
| 1141 | |
| 1142 | /* Check that timestamp is valid */ |
| 1143 | rc = rx_buffers[0]->avail_smpls(timestamp); |
| 1144 | if (rc < 0) { |
| 1145 | LOGC(DDEV, ERROR) << rx_buffers[0]->str_code(rc); |
| 1146 | LOGC(DDEV, ERROR) << rx_buffers[0]->str_status(timestamp); |
| 1147 | return 0; |
| 1148 | } |
| 1149 | |
| 1150 | for (i = 0; i < chans; i++) { |
| 1151 | /* Receive samples from HW until we have enough */ |
| 1152 | while ((avail_smpls = rx_buffers[i]->avail_smpls(timestamp)) < len) { |
| 1153 | uint64_t recv_timestamp = 0; |
| 1154 | |
| 1155 | thread_enable_cancel(false); |
| 1156 | num_smpls = ipc_shm_read(shm_io_rx_streams[i], (uint16_t *)bufs[i], len - avail_smpls, |
| 1157 | &recv_timestamp, 1); |
| 1158 | expect_timestamp = timestamp + avail_smpls; |
| 1159 | thread_enable_cancel(true); |
| 1160 | |
| 1161 | if (num_smpls == -ETIMEDOUT) |
| 1162 | continue; |
| 1163 | |
| 1164 | LOGCHAN(i, DDEV, DEBUG) |
| 1165 | "Received timestamp = " << (TIMESTAMP)recv_timestamp << " (" << num_smpls << ")"; |
| 1166 | |
| 1167 | if (expect_timestamp != (TIMESTAMP)recv_timestamp) |
| 1168 | LOGCHAN(i, DDEV, ERROR) << "Unexpected recv buffer timestamp: expect " |
| 1169 | << expect_timestamp << " got " << recv_timestamp << ", diff=" |
| 1170 | << ((uint64_t)recv_timestamp > expect_timestamp ? |
| 1171 | (uint64_t)recv_timestamp - expect_timestamp : |
| 1172 | expect_timestamp - recv_timestamp); |
| 1173 | |
| 1174 | rc = rx_buffers[i]->write(bufs[i], num_smpls, (TIMESTAMP)recv_timestamp); |
| 1175 | if (rc < 0) { |
| 1176 | LOGCHAN(i, DDEV, ERROR) |
| 1177 | << rx_buffers[i]->str_code(rc) << " num smpls: " << num_smpls << " chan: " << i; |
| 1178 | LOGCHAN(i, DDEV, ERROR) << rx_buffers[i]->str_status(timestamp); |
| 1179 | if (rc != smpl_buf::ERROR_OVERFLOW) |
| 1180 | return 0; |
| 1181 | } |
| 1182 | } |
| 1183 | } |
| 1184 | |
| 1185 | /* We have enough samples */ |
| 1186 | for (size_t i = 0; i < rx_buffers.size(); i++) { |
| 1187 | rc = rx_buffers[i]->read(bufs[i], len, timestamp); |
| 1188 | if ((rc < 0) || (rc != len)) { |
| 1189 | LOGCHAN(i, DDEV, ERROR) << rx_buffers[i]->str_code(rc) << ". " |
| 1190 | << rx_buffers[i]->str_status(timestamp) << ", (len=" << len << ")"; |
| 1191 | return 0; |
| 1192 | } |
| 1193 | } |
| 1194 | |
| 1195 | return len; |
| 1196 | } |
| 1197 | |
| 1198 | int IPCDevice::writeSamples(std::vector<short *> &bufs, int len, bool *underrun, unsigned long long timestamp) |
| 1199 | { |
| 1200 | int rc = 0; |
| 1201 | unsigned int i; |
| 1202 | |
| 1203 | if (bufs.size() != chans) { |
| 1204 | LOGC(DDEV, ERROR) << "Invalid channel combination " << bufs.size(); |
| 1205 | return -1; |
| 1206 | } |
| 1207 | |
| 1208 | *underrun = false; |
| 1209 | |
| 1210 | for (i = 0; i < chans; i++) { |
| 1211 | LOGCHAN(i, DDEV, DEBUG) << "send buffer of len " << len << " timestamp " << std::hex << timestamp; |
| 1212 | thread_enable_cancel(false); |
| 1213 | rc = ipc_shm_enqueue(shm_io_tx_streams[i], timestamp, len, (uint16_t *)bufs[i]); |
| 1214 | thread_enable_cancel(true); |
| 1215 | |
| 1216 | if (rc != len) { |
| 1217 | LOGCHAN(i, DDEV, ERROR) << "LMS: Device Tx timed out (" << rc << " vs exp " << len << ")."; |
| 1218 | return -1; |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | return rc; |
| 1223 | } |
| 1224 | |
| 1225 | bool IPCDevice::updateAlignment(TIMESTAMP timestamp) |
| 1226 | { |
| 1227 | return true; |
| 1228 | } |
| 1229 | |
| 1230 | bool IPCDevice::setTxFreq(double wFreq, size_t chan) |
| 1231 | { |
| 1232 | struct msgb *msg; |
| 1233 | struct ipc_sk_chan_if *ipc_prim; |
| 1234 | LOGCHAN(chan, DDEV, NOTICE) << "Setting Tx Freq to " << wFreq << " Hz"; |
| 1235 | |
| 1236 | msg = ipc_msgb_alloc(IPC_IF_MSG_SETFREQ_REQ); |
| 1237 | if (!msg) |
| 1238 | return -ENOMEM; |
| 1239 | ipc_prim = (struct ipc_sk_chan_if *)msg->data; |
| 1240 | ipc_prim->u.set_freq_req.is_tx = 1; |
| 1241 | ipc_prim->u.set_freq_req.freq = wFreq; |
| 1242 | |
| 1243 | return send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETFREQ_CNF); |
| 1244 | } |
| 1245 | |
| 1246 | bool IPCDevice::setRxFreq(double wFreq, size_t chan) |
| 1247 | { |
| 1248 | struct msgb *msg; |
| 1249 | struct ipc_sk_chan_if *ipc_prim; |
| 1250 | LOGCHAN(chan, DDEV, NOTICE) << "Setting Rx Freq to " << wFreq << " Hz"; |
| 1251 | |
| 1252 | msg = ipc_msgb_alloc(IPC_IF_MSG_SETFREQ_REQ); |
| 1253 | if (!msg) |
| 1254 | return -ENOMEM; |
| 1255 | ipc_prim = (struct ipc_sk_chan_if *)msg->data; |
| 1256 | ipc_prim->u.set_freq_req.is_tx = 0; |
| 1257 | ipc_prim->u.set_freq_req.freq = wFreq; |
| 1258 | |
| 1259 | return send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETFREQ_CNF); |
| 1260 | } |
| 1261 | |
| 1262 | RadioDevice *RadioDevice::make(size_t tx_sps, size_t rx_sps, InterfaceType iface, size_t chans, double lo_offset, |
| 1263 | const std::vector<std::string> &tx_paths, const std::vector<std::string> &rx_paths) |
| 1264 | { |
| 1265 | if (tx_sps != rx_sps) { |
| 1266 | LOGC(DDEV, ERROR) << "IPC Requires tx_sps == rx_sps"; |
| 1267 | return NULL; |
| 1268 | } |
| 1269 | if (lo_offset != 0.0) { |
| 1270 | LOGC(DDEV, ERROR) << "IPC doesn't support lo_offset"; |
| 1271 | return NULL; |
| 1272 | } |
| 1273 | return new IPCDevice(tx_sps, rx_sps, iface, chans, lo_offset, tx_paths, rx_paths); |
| 1274 | } |