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-rw-r--r--Transceiver52M/device/ipc/IPCDevice.cpp1267
1 files changed, 1267 insertions, 0 deletions
diff --git a/Transceiver52M/device/ipc/IPCDevice.cpp b/Transceiver52M/device/ipc/IPCDevice.cpp
new file mode 100644
index 0000000..4a1f8b6
--- /dev/null
+++ b/Transceiver52M/device/ipc/IPCDevice.cpp
@@ -0,0 +1,1267 @@
+/*
+* Copyright 2020 sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+* Author: Pau Espin Pedrol <pespin@sysmocom.de>
+*
+* SPDX-License-Identifier: AGPL-3.0+
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Affero General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+* See the COPYING file in the main directory for details.
+*/
+
+#include <cstdint>
+#include <cstring>
+#include <cstdlib>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "Logger.h"
+#include "Threads.h"
+#include "IPCDevice.h"
+#include "smpl_buf.h"
+
+extern "C" {
+#include <sys/mman.h>
+#include <sys/stat.h> /* For mode constants */
+#include <fcntl.h> /* For O_* constants */
+
+#include "osmo_signal.h"
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/socket.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/utils.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/timer.h>
+
+#include "ipc_shm.h"
+}
+
+#define SAMPLE_BUF_SZ (1 << 20)
+
+using namespace std;
+
+static int ipc_chan_sock_cb(struct osmo_fd *bfd, unsigned int flags);
+
+IPCDevice::IPCDevice(size_t tx_sps, size_t rx_sps, InterfaceType iface, size_t chan_num, double lo_offset,
+ const std::vector<std::string> &tx_paths, const std::vector<std::string> &rx_paths)
+ : RadioDevice(tx_sps, rx_sps, iface, chan_num, lo_offset, tx_paths, rx_paths), tx_attenuation(),
+ tmp_state(IPC_IF_MSG_GREETING_REQ), shm(NULL), shm_dec(0), started(false)
+{
+ LOGC(DDEV, INFO) << "creating IPC device...";
+
+ rx_gains.resize(chans);
+ tx_gains.resize(chans);
+
+ rx_buffers.resize(chans);
+
+ sk_chan_state.resize(chans, ipc_per_trx_sock_state());
+
+ /* Set up per-channel Rx timestamp based Ring buffers */
+ for (size_t i = 0; i < rx_buffers.size(); i++)
+ rx_buffers[i] = new smpl_buf(SAMPLE_BUF_SZ / sizeof(uint32_t));
+}
+
+IPCDevice::~IPCDevice()
+{
+ LOGC(DDEV, INFO) << "Closing IPC device";
+ /* disable all channels */
+
+ for (size_t i = 0; i < rx_buffers.size(); i++)
+ delete rx_buffers[i];
+
+ ipc_sock_close(&master_sk_state);
+
+ for (unsigned int i = 0; i < sk_chan_state.size(); i++)
+ ipc_sock_close(&sk_chan_state[i]);
+
+ for (auto i : shm_io_rx_streams)
+ ipc_shm_close(i);
+ for (auto i : shm_io_tx_streams)
+ ipc_shm_close(i);
+
+ if (shm_dec)
+ talloc_free(shm_dec);
+}
+
+int IPCDevice::ipc_shm_connect(const char *shm_name)
+{
+ int fd;
+ size_t shm_len;
+ int rc;
+
+ LOGP(DDEV, LOGL_NOTICE, "Opening shm path %s\n", shm_name);
+ if ((fd = shm_open(shm_name, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR)) < 0) {
+ LOGP(DDEV, LOGL_ERROR, "shm_open %d: %s\n", errno, strerror(errno));
+ rc = -errno;
+ goto err_shm_open;
+ }
+
+ // Get size of the allocated memory
+ struct stat shm_stat;
+ if (fstat(fd, &shm_stat) < 0) {
+ LOGP(DDEV, LOGL_ERROR, "fstat %d: %s\n", errno, strerror(errno));
+ rc = -errno;
+ goto err_mmap;
+ }
+
+ shm_len = shm_stat.st_size;
+
+ LOGP(DDEV, LOGL_NOTICE, "mmaping shared memory fd %d (size=%zu)\n", fd, shm_len);
+ if ((shm = mmap(NULL, shm_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) {
+ LOGP(DDEV, LOGL_ERROR, "mmap %d: %s\n", errno, strerror(errno));
+ rc = -errno;
+ goto err_mmap;
+ }
+ LOGP(DDEV, LOGL_NOTICE, "mmap'ed shared memory at addr %p\n", shm);
+ // LOGP(DDEV, LOGL_NOTICE, "%s\n", osmo_hexdump((const unsigned char *)shm, 80));
+ /* After a call to mmap(2) the file descriptor may be closed without affecting the memory mapping. */
+ close(fd);
+ return 0;
+err_mmap:
+ shm_unlink(shm_name);
+ close(fd);
+err_shm_open:
+ return rc;
+}
+
+static int ipc_sock_send(struct ipc_per_trx_sock_state *state, struct msgb *msg);
+
+static struct msgb *ipc_msgb_alloc(uint8_t msg_type)
+{
+ struct msgb *msg;
+ struct ipc_sk_if *ipc_prim;
+
+ msg = msgb_alloc(sizeof(struct ipc_sk_if) + 1000, "ipc_sock_tx");
+ if (!msg)
+ return NULL;
+ msgb_put(msg, sizeof(struct ipc_sk_if) + 1000);
+ ipc_prim = (struct ipc_sk_if *)msg->data;
+ ipc_prim->msg_type = msg_type;
+
+ return msg;
+}
+
+static int ipc_tx_greeting_req(struct ipc_per_trx_sock_state *state, uint8_t req_version)
+{
+ struct msgb *msg;
+ struct ipc_sk_if *ipc_prim;
+
+ LOGC(DDEV, NOTICE) << "Tx Greeting Req (" << IPC_IF_MSG_GREETING_REQ << ")\n";
+
+ msg = ipc_msgb_alloc(IPC_IF_MSG_GREETING_REQ);
+ if (!msg) {
+ LOGC(DDEV, INFO) << "ipc_msgb_alloc() returns NULL!";
+ return -ENOMEM;
+ }
+ ipc_prim = (struct ipc_sk_if *)msg->data;
+ ipc_prim->u.greeting_req.req_version = req_version;
+
+ return ipc_sock_send(state, msg);
+}
+
+static int ipc_tx_info_req(struct ipc_per_trx_sock_state *state)
+{
+ struct msgb *msg;
+ //struct ipc_sk_if *ipc_prim;
+
+ LOGC(DDEV, NOTICE) << "Tx INFO Req\n";
+
+ msg = ipc_msgb_alloc(IPC_IF_MSG_INFO_REQ);
+ if (!msg)
+ return -ENOMEM;
+
+ //ipc_prim = (struct ipc_sk_if *) msg->data;
+
+ return ipc_sock_send(state, msg);
+}
+
+int IPCDevice::ipc_tx_open_req(struct ipc_per_trx_sock_state *state, uint32_t num_chans, uint32_t ref)
+{
+ struct msgb *msg;
+ struct ipc_sk_if *ipc_prim;
+ struct ipc_sk_if_open_req_chan *chan_info;
+
+ LOGC(DDEV, NOTICE) << "Tx Open Req\n";
+
+ msg = ipc_msgb_alloc(IPC_IF_MSG_OPEN_REQ);
+ if (!msg) {
+ return -ENOMEM;
+ }
+ ipc_prim = (struct ipc_sk_if *)msg->data;
+ ipc_prim->u.open_req.num_chans = num_chans;
+
+ /* FIXME: this is actually the sps value, not the sample rate!
+ * sample rate is looked up according to the sps rate by uhd backend */
+ ipc_prim->u.open_req.rx_sample_freq_num = rx_sps;
+ ipc_prim->u.open_req.rx_sample_freq_den = 1;
+ ipc_prim->u.open_req.tx_sample_freq_num = tx_sps;
+ ipc_prim->u.open_req.tx_sample_freq_den = 1;
+
+ switch (ref) {
+ case ReferenceType::REF_EXTERNAL:
+ ipc_prim->u.open_req.clockref = FEATURE_MASK_CLOCKREF_EXTERNAL;
+ break;
+ case ReferenceType::REF_INTERNAL:
+ case ReferenceType::REF_GPS:
+ ipc_prim->u.open_req.clockref = FEATURE_MASK_CLOCKREF_INTERNAL;
+ break;
+ }
+
+ /* FIXME: clock ref part of config, not open */
+ ipc_prim->u.open_req.clockref = FEATURE_MASK_CLOCKREF_EXTERNAL;
+
+ for (unsigned int i = 0; i < num_chans; i++) {
+ chan_info = &ipc_prim->u.open_req.chan_info[i];
+ OSMO_STRLCPY_ARRAY(chan_info->rx_path, rx_paths[i].c_str());
+ OSMO_STRLCPY_ARRAY(chan_info->tx_path, tx_paths[i].c_str());
+ }
+
+ return ipc_sock_send(state, msg);
+}
+
+static void ipc_sock_timeout(void *_priv)
+{
+ LOGC(DDEV, INFO) << "UNIX SOCKET TIMEOUT!";
+ exit(1);
+}
+
+int IPCDevice::ipc_rx_greeting_cnf(const struct ipc_sk_if_greeting *greeting_cnf)
+{
+ if (greeting_cnf->req_version == IPC_SOCK_API_VERSION) {
+ LOGC(DDEV, NOTICE) << "Rx Greeting CNF: correct sock API version" << greeting_cnf->req_version;
+ tmp_state = IPC_IF_MSG_GREETING_CNF;
+ } else {
+ LOGC(DDEV, ERROR) << "Wrong IPC SOCK API VERSION RECEIVED!" << greeting_cnf->req_version;
+ exit(1);
+ }
+ return 0;
+}
+
+int IPCDevice::ipc_rx_info_cnf(const struct ipc_sk_if_info_cnf *info_cnf)
+{
+ current_info_cnf = *info_cnf;
+ unsigned int i;
+
+ if (info_cnf->max_num_chans < chans) {
+ LOGC(DDEV, ERROR) << "chan num mismatch:" << info_cnf->max_num_chans << " vs " << chans;
+ return -1;
+ }
+
+ /* Here:
+ * verify info_cnf->max_num_chans >= requested chans
+ * verify supports setting reflock as asked by user looking in info_cnf->feature_mask
+ * cache locally min/max tx/rxGain values from info_cnf
+ * do whatever validations or print info_cnf->dev_desc
+ * cache rx/tx paths per channel, and make sure it matches the one the user wants to set
+ */
+
+ LOGC(DDEV, NOTICE)
+ << "Rx Info CNF:"
+ << " name=" << info_cnf->dev_desc << std::endl
+ << " max_num_chans=" << info_cnf->max_num_chans << " feature_mask=" << info_cnf->feature_mask;
+ for (i = 0; i < info_cnf->max_num_chans; i++) {
+ int j = 0;
+ bool rx_found = false, tx_found = false;
+ while (strcmp(info_cnf->chan_info[i].rx_path[j], "") != 0) {
+ LOGC(DDEV, NOTICE)
+ << "chan " << i << ": RxPath[" << j << "]: " << info_cnf->chan_info[i].rx_path[j]
+ << " min_rx_gain=" << info_cnf->chan_info[i].min_rx_gain
+ << " max_rx_gain=" << info_cnf->chan_info[i].max_rx_gain
+ << " min_tx_gain=" << info_cnf->chan_info[i].min_tx_gain
+ << " max_tx_gain=" << info_cnf->chan_info[i].max_tx_gain;
+
+ if (rx_paths.size() < (i + 1) ||
+ strcmp(rx_paths[i].c_str(), info_cnf->chan_info[i].rx_path[j]) == 0) {
+ rx_found = true;
+ break;
+ }
+ j++;
+ }
+ j = 0;
+ while (strcmp(info_cnf->chan_info[i].tx_path[j], "") != 0) {
+ LOGC(DDEV, NOTICE)
+ << "chan " << i << ": TxPath[" << j << "]: " << info_cnf->chan_info[i].tx_path[j];
+ if (tx_paths.size() < (i + 1) ||
+ strcmp(tx_paths[i].c_str(), info_cnf->chan_info[i].tx_path[j]) == 0) {
+ tx_found = true;
+ break;
+ }
+ j++;
+ }
+
+ if (!rx_found) {
+ LOGC(DDEV, ERROR) << "rx antenna not found: " << rx_paths[i];
+ exit(0);
+ }
+ if (!tx_found) {
+ LOGC(DDEV, ERROR) << "tx antenna not found: " << rx_paths[i];
+ exit(0);
+ }
+ }
+ tmp_state = IPC_IF_MSG_INFO_CNF;
+ return 0;
+}
+
+int IPCDevice::ipc_rx_open_cnf(const struct ipc_sk_if_open_cnf *open_cnf)
+{
+ unsigned int i;
+ current_open_cnf = *open_cnf;
+
+ LOGC(DDEV, NOTICE)
+ << "Rx Open CNF:"
+ << " return_code=" << (unsigned int)open_cnf->return_code << " shm_name=" << open_cnf->shm_name;
+ LOGC(DDEV, NOTICE) << "Rx Open CNF:"
+ << " ipc device path delay: " << (unsigned int)open_cnf->path_delay;
+ for (i = 0; i < chans; i++) {
+ int rc;
+ LOGC(DDEV, NOTICE) << "chan " << i << ": sk_path=" << open_cnf->chan_info[i].chan_ipc_sk_path;
+
+ /* FIXME: current limit IPC_MAX_NUM_TRX chans, make dynamic */
+ if (i < IPC_MAX_NUM_TRX) {
+ struct ipc_per_trx_sock_state *state = &sk_chan_state[i];
+
+ INIT_LLIST_HEAD(&state->upqueue);
+ rc = osmo_sock_unix_init_ofd(&state->conn_bfd, SOCK_SEQPACKET, 0,
+ open_cnf->chan_info[i].chan_ipc_sk_path, OSMO_SOCK_F_CONNECT);
+ if (rc < 0) {
+ LOGC(DDEV, ERROR) << "Failed to connect to the BTS ("
+ << open_cnf->chan_info[i].chan_ipc_sk_path << "). "
+ << "Retrying...\n";
+ osmo_timer_setup(&state->timer, ipc_sock_timeout, NULL);
+ osmo_timer_schedule(&state->timer, 5, 0);
+ return -1;
+ }
+ state->conn_bfd.cb = ipc_chan_sock_cb;
+ state->conn_bfd.data = this;
+ state->conn_bfd.priv_nr = i;
+ }
+ }
+
+ OSMO_STRLCPY_ARRAY(shm_name, open_cnf->shm_name);
+ if (ipc_shm_connect(shm_name) < 0)
+ return -1;
+ shm_dec = ipc_shm_decode_region(NULL, (ipc_shm_raw_region *)shm);
+ LOGC(DDEV, NOTICE) << "shm: num_chans=" << shm_dec->num_chans;
+
+ /* server inits both producers */
+ for (unsigned int i = 0; i < shm_dec->num_chans; i++) {
+ LOGC(DDEV, NOTICE)
+ << "shm: chan" << i << "/dl: num_buffers=" << shm_dec->channels[i]->dl_stream->num_buffers;
+ LOGC(DDEV, NOTICE)
+ << "shm: chan" << i << "/dl: buffer_size=" << shm_dec->channels[i]->dl_stream->buffer_size;
+ LOGC(DDEV, NOTICE)
+ << "shm: chan" << i << "/ul: num_buffers=" << shm_dec->channels[i]->ul_stream->num_buffers;
+ LOGC(DDEV, NOTICE)
+ << "shm: chan" << i << "/ul: buffer_size=" << shm_dec->channels[i]->ul_stream->buffer_size;
+ shm_io_rx_streams.push_back(ipc_shm_init_consumer(shm_dec->channels[i]->ul_stream));
+ shm_io_tx_streams.push_back(ipc_shm_init_consumer(shm_dec->channels[i]->dl_stream));
+ // we should init a producer here, but delegating all producers and therefore lock management
+ // to the other side is the reasonable approach to circumvent shutdown issues
+ }
+
+ tmp_state = IPC_IF_MSG_OPEN_CNF;
+ return 0;
+}
+
+int IPCDevice::ipc_rx(uint8_t msg_type, struct ipc_sk_if *ipc_prim)
+{
+ int rc = 0;
+
+ switch (msg_type) {
+ case IPC_IF_MSG_GREETING_CNF:
+ rc = ipc_rx_greeting_cnf(&ipc_prim->u.greeting_cnf);
+ break;
+ case IPC_IF_MSG_INFO_CNF:
+ rc = ipc_rx_info_cnf(&ipc_prim->u.info_cnf);
+ break;
+ case IPC_IF_MSG_OPEN_CNF:
+ rc = ipc_rx_open_cnf(&ipc_prim->u.open_cnf);
+ break;
+ default:
+ LOGP(DDEV, LOGL_ERROR, "Received unknown IPC msg type %d\n", msg_type);
+ rc = -EINVAL;
+ }
+
+ return rc;
+}
+
+int IPCDevice::ipc_rx_chan_start_cnf(ipc_sk_chan_if_op_rc *ret, uint8_t chan_nr)
+{
+ if (chan_nr >= chans) {
+ LOGC(DDEV, NOTICE) << "shm: illegal start response for chan #" << chan_nr << " ?!?";
+ return 0;
+ }
+ return 0;
+}
+int IPCDevice::ipc_rx_chan_stop_cnf(ipc_sk_chan_if_op_rc *ret, uint8_t chan_nr)
+{
+ if (chan_nr >= chans) {
+ LOGC(DDEV, NOTICE) << "shm: illegal stop response for chan #" << chan_nr << " ?!?";
+ return 0;
+ }
+ return 0;
+}
+int IPCDevice::ipc_rx_chan_setgain_cnf(ipc_sk_chan_if_gain *ret, uint8_t chan_nr)
+{
+ if (chan_nr >= chans) {
+ LOGC(DDEV, NOTICE) << "shm: illegal setgain response for chan #" << chan_nr << " ?!?";
+ return 0;
+ }
+
+ ret->is_tx ? tx_gains[chan_nr] = ret->gain : rx_gains[chan_nr] = ret->gain;
+ return 0;
+}
+int IPCDevice::ipc_rx_chan_settxattn_cnf(ipc_sk_chan_if_tx_attenuation *ret, uint8_t chan_nr)
+{
+ if (chan_nr >= chans) {
+ LOGC(DDEV, NOTICE) << "shm: illegal tx attn response for chan #" << chan_nr << " ?!?";
+ return 0;
+ }
+
+ tx_attenuation[chan_nr] = ret->attenuation;
+ return 0;
+}
+int IPCDevice::ipc_rx_chan_setfreq_cnf(ipc_sk_chan_if_freq_cnf *ret, uint8_t chan_nr)
+{
+ if (chan_nr >= chans) {
+ LOGC(DDEV, NOTICE) << "shm: illegal setfreq response for chan #" << chan_nr << " ?!?";
+ return 0;
+ }
+
+ return 0;
+}
+int IPCDevice::ipc_rx_chan_notify_underflow(ipc_sk_chan_if_notfiy *ret, uint8_t chan_nr)
+{
+ if (chan_nr >= chans) {
+ LOGC(DDEV, NOTICE) << "shm: illegal underfloww notification for chan #" << chan_nr << " ?!?";
+ return 0;
+ }
+
+ m_ctr[chan_nr].tx_underruns += 1;
+ osmo_signal_dispatch(SS_DEVICE, S_DEVICE_COUNTER_CHANGE, &m_ctr[chan_nr]);
+
+ return 0;
+}
+int IPCDevice::ipc_rx_chan_notify_overflow(ipc_sk_chan_if_notfiy *ret, uint8_t chan_nr)
+{
+ if (chan_nr >= chans) {
+ LOGC(DDEV, NOTICE) << "shm: illegal overflow notification for chan #" << chan_nr << " ?!?";
+ return 0;
+ }
+
+ m_ctr[chan_nr].rx_overruns += 1;
+ osmo_signal_dispatch(SS_DEVICE, S_DEVICE_COUNTER_CHANGE, &m_ctr[chan_nr]);
+ return 0;
+}
+
+int IPCDevice::ipc_chan_rx(uint8_t msg_type, struct ipc_sk_chan_if *ipc_prim, uint8_t chan_nr)
+{
+ int rc = 0;
+
+ switch (msg_type) {
+ case IPC_IF_MSG_START_CNF:
+ rc = ipc_rx_chan_start_cnf(&ipc_prim->u.start_cnf, chan_nr);
+ break;
+ case IPC_IF_MSG_STOP_CNF:
+ rc = ipc_rx_chan_stop_cnf(&ipc_prim->u.stop_cnf, chan_nr);
+ break;
+ case IPC_IF_MSG_SETGAIN_CNF:
+ rc = ipc_rx_chan_setgain_cnf(&ipc_prim->u.set_gain_cnf, chan_nr);
+ break;
+ case IPC_IF_MSG_SETFREQ_CNF:
+ rc = ipc_rx_chan_setfreq_cnf(&ipc_prim->u.set_freq_cnf, chan_nr);
+ break;
+ case IPC_IF_NOTIFY_UNDERFLOW:
+ rc = ipc_rx_chan_notify_underflow(&ipc_prim->u.notify, chan_nr);
+ break;
+ case IPC_IF_NOTIFY_OVERFLOW:
+ rc = ipc_rx_chan_notify_overflow(&ipc_prim->u.notify, chan_nr);
+ break;
+ case IPC_IF_MSG_SETTXATTN_CNF:
+ rc = ipc_rx_chan_settxattn_cnf(&ipc_prim->u.txatten_cnf, chan_nr);
+ break;
+ default:
+ LOGP(DMAIN, LOGL_ERROR, "Received unknown IPC msg type %d\n", msg_type);
+ rc = -EINVAL;
+ }
+
+ return rc;
+}
+
+static int ipc_sock_send(struct ipc_per_trx_sock_state *state, struct msgb *msg)
+{
+ struct osmo_fd *conn_bfd;
+
+ if (!state) {
+ LOGP(DMAIN, LOGL_INFO,
+ "IPC socket not created, "
+ "dropping message\n");
+ msgb_free(msg);
+ return -EINVAL;
+ }
+ conn_bfd = &state->conn_bfd;
+ if (conn_bfd->fd <= 0) {
+ LOGP(DMAIN, LOGL_NOTICE,
+ "IPC socket not connected, "
+ "dropping message\n");
+ msgb_free(msg);
+ return -EIO;
+ }
+ msgb_enqueue(&state->upqueue, msg);
+ conn_bfd->when |= BSC_FD_WRITE;
+
+ return 0;
+}
+
+void IPCDevice::ipc_sock_close(struct ipc_per_trx_sock_state *state)
+{
+ if (state == 0)
+ return;
+
+ struct osmo_fd *bfd = &state->conn_bfd;
+
+ if (bfd->fd <= 0)
+ return;
+
+ LOGP(DDEV, LOGL_NOTICE, "IPC socket has LOST connection\n");
+
+ close(bfd->fd);
+ bfd->fd = -1;
+ osmo_fd_unregister(bfd);
+
+ /* flush the queue */
+ while (!llist_empty(&state->upqueue)) {
+ struct msgb *msg = msgb_dequeue(&state->upqueue);
+ msgb_free(msg);
+ }
+}
+
+int IPCDevice::ipc_sock_read(struct osmo_fd *bfd)
+{
+ struct ipc_sk_if *ipc_prim;
+ struct msgb *msg;
+ int rc;
+
+ msg = msgb_alloc(sizeof(*ipc_prim) + 1000, "ipc_sock_rx");
+ if (!msg)
+ return -ENOMEM;
+
+ ipc_prim = (struct ipc_sk_if *)msg->tail;
+
+ rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0);
+ if (rc == 0)
+ goto close;
+
+ if (rc < 0) {
+ if (errno == EAGAIN) {
+ msgb_free(msg);
+ return 0;
+ }
+ goto close;
+ }
+
+ if ((size_t)rc < sizeof(*ipc_prim)) {
+ LOGP(DDEV, LOGL_ERROR,
+ "Received %d bytes on Unix Socket, but primitive size "
+ "is %zu, discarding\n",
+ rc, sizeof(*ipc_prim));
+ msgb_free(msg);
+ return 0;
+ }
+
+ rc = ipc_rx(ipc_prim->msg_type, ipc_prim);
+
+ /* as we always synchronously process the message in IPC_rx() and
+ * its callbacks, we can free the message here. */
+ msgb_free(msg);
+
+ return rc;
+
+close:
+ msgb_free(msg);
+ ipc_sock_close(&master_sk_state);
+ return -1;
+}
+
+int IPCDevice::ipc_chan_sock_read(struct osmo_fd *bfd)
+{
+ struct ipc_sk_chan_if *ipc_prim;
+ struct msgb *msg;
+ int rc;
+
+ msg = msgb_alloc(sizeof(*ipc_prim) + 1000, "ipc_chan_sock_rx");
+ if (!msg)
+ return -ENOMEM;
+
+ ipc_prim = (struct ipc_sk_chan_if *)msg->tail;
+
+ rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0);
+ if (rc == 0)
+ goto close;
+
+ if (rc < 0) {
+ if (errno == EAGAIN) {
+ msgb_free(msg);
+ return 0;
+ }
+ goto close;
+ }
+
+ if ((size_t)rc < sizeof(*ipc_prim)) {
+ LOGP(DDEV, LOGL_ERROR,
+ "Received %d bytes on Unix Socket, but primitive size "
+ "is %zu, discarding\n",
+ rc, sizeof(*ipc_prim));
+ msgb_free(msg);
+ return 0;
+ }
+
+ /* store mask of last received messages so we can check later */
+ sk_chan_state[bfd->priv_nr].messages_processed_mask |= (1 << (ipc_prim->msg_type - IPC_IF_CHAN_MSG_OFFSET));
+
+ rc = ipc_chan_rx(ipc_prim->msg_type, ipc_prim, bfd->priv_nr);
+
+ /* as we always synchronously process the message in IPC_rx() and
+ * its callbacks, we can free the message here. */
+ msgb_free(msg);
+
+ return rc;
+
+close:
+ msgb_free(msg);
+ ipc_sock_close(&sk_chan_state[bfd->priv_nr]);
+ return -1;
+}
+
+int IPCDevice::ipc_sock_write(struct osmo_fd *bfd)
+{
+ int rc;
+
+ while (!llist_empty(&master_sk_state.upqueue)) {
+ struct msgb *msg, *msg2;
+ struct ipc_sk_if *ipc_prim;
+
+ /* peek at the beginning of the queue */
+ msg = llist_entry(master_sk_state.upqueue.next, struct msgb, list);
+ ipc_prim = (struct ipc_sk_if *)msg->data;
+
+ bfd->when &= ~BSC_FD_WRITE;
+
+ /* bug hunter 8-): maybe someone forgot msgb_put(...) ? */
+ if (!msgb_length(msg)) {
+ LOGP(DDEV, LOGL_ERROR,
+ "message type (%d) with ZERO "
+ "bytes!\n",
+ ipc_prim->msg_type);
+ goto dontsend;
+ }
+
+ /* try to send it over the socket */
+ rc = write(bfd->fd, msgb_data(msg), msgb_length(msg));
+ if (rc == 0)
+ goto close;
+ if (rc < 0) {
+ if (errno == EAGAIN) {
+ bfd->when |= BSC_FD_WRITE;
+ break;
+ }
+ goto close;
+ }
+
+ dontsend:
+ /* _after_ we send it, we can deueue */
+ msg2 = msgb_dequeue(&master_sk_state.upqueue);
+ assert(msg == msg2);
+ msgb_free(msg);
+ }
+ return 0;
+
+close:
+ ipc_sock_close(&master_sk_state);
+ return -1;
+}
+
+int IPCDevice::ipc_chan_sock_write(struct osmo_fd *bfd)
+{
+ int rc;
+
+ while (!llist_empty(&sk_chan_state[bfd->priv_nr].upqueue)) {
+ struct msgb *msg, *msg2;
+ struct ipc_sk_chan_if *ipc_prim;
+
+ /* peek at the beginning of the queue */
+ msg = llist_entry(sk_chan_state[bfd->priv_nr].upqueue.next, struct msgb, list);
+ ipc_prim = (struct ipc_sk_chan_if *)msg->data;
+ bfd->when &= ~BSC_FD_WRITE;
+ /* bug hunter 8-): maybe someone forgot msgb_put(...) ? */
+ if (!msgb_length(msg)) {
+ LOGP(DDEV, LOGL_ERROR,
+ "message type (%d) with ZERO "
+ "bytes!\n",
+ ipc_prim->msg_type);
+ goto dontsend;
+ }
+
+ /* try to send it over the socket */
+ rc = write(bfd->fd, msgb_data(msg), msgb_length(msg));
+ if (rc == 0)
+ goto close;
+ if (rc < 0) {
+ if (errno == EAGAIN) {
+ bfd->when |= BSC_FD_WRITE;
+ break;
+ }
+ goto close;
+ }
+
+ dontsend:
+ /* _after_ we send it, we can dequeue */
+ msg2 = msgb_dequeue(&sk_chan_state[bfd->priv_nr].upqueue);
+ assert(msg == msg2);
+ msgb_free(msg);
+ }
+ return 0;
+
+close:
+ ipc_sock_close(&sk_chan_state[bfd->priv_nr]);
+ return -1;
+}
+
+static int ipc_sock_cb(struct osmo_fd *bfd, unsigned int flags)
+{
+ IPCDevice *device = static_cast<IPCDevice *>(bfd->data);
+ int rc = 0;
+
+ if (flags & BSC_FD_READ)
+ rc = device->ipc_sock_read(bfd);
+ if (rc < 0)
+ return rc;
+
+ if (flags & BSC_FD_WRITE)
+ rc = device->ipc_sock_write(bfd);
+
+ return rc;
+}
+
+static int ipc_chan_sock_cb(struct osmo_fd *bfd, unsigned int flags)
+{
+ IPCDevice *device = static_cast<IPCDevice *>(bfd->data);
+ int rc = 0;
+
+ if (flags & BSC_FD_READ)
+ rc = device->ipc_chan_sock_read(bfd);
+ if (rc < 0)
+ return rc;
+
+ if (flags & BSC_FD_WRITE)
+ rc = device->ipc_chan_sock_write(bfd);
+
+ return rc;
+}
+
+int IPCDevice::open(const std::string &args, int ref, bool swap_channels)
+{
+ std::string k, v;
+ std::string::size_type keyend;
+ int rc;
+
+ if ((keyend = args.find('=')) != std::string::npos) {
+ k = args.substr(0, keyend++);
+ v = args.substr(keyend);
+ }
+ if (k != "ipc_msock" || !v.length()) {
+ LOGC(DDEV, ERROR) << "Invalid device args provided, expected \"dev-args ipc_msock=/path/to/socket\"\n";
+ return -1;
+ }
+
+ LOGC(DDEV, INFO) << "Opening IPC device" << v << "..";
+
+ INIT_LLIST_HEAD(&master_sk_state.upqueue);
+ rc = osmo_sock_unix_init_ofd(&master_sk_state.conn_bfd, SOCK_SEQPACKET, 0, v.c_str(), OSMO_SOCK_F_CONNECT);
+ if (rc < 0) {
+ LOGC(DDEV, ERROR) << "Failed to connect to the BTS (" << v << "). "
+ << "Retrying...\n";
+ osmo_timer_setup(&master_sk_state.timer, ipc_sock_timeout, NULL);
+ osmo_timer_schedule(&master_sk_state.timer, 5, 0);
+ return -1;
+ }
+ master_sk_state.conn_bfd.cb = ipc_sock_cb;
+ master_sk_state.conn_bfd.data = this;
+
+ ipc_tx_greeting_req(&master_sk_state, IPC_SOCK_API_VERSION);
+ /* Wait until confirmation is recieved */
+ while (tmp_state != IPC_IF_MSG_GREETING_CNF)
+ osmo_select_main(0);
+
+ ipc_tx_info_req(&master_sk_state);
+ /* Wait until confirmation is recieved */
+ while (tmp_state != IPC_IF_MSG_INFO_CNF)
+ osmo_select_main(0);
+
+ ipc_tx_open_req(&master_sk_state, chans, ref);
+ /* Wait until confirmation is recieved */
+ while (tmp_state != IPC_IF_MSG_OPEN_CNF)
+ osmo_select_main(0);
+ LOGC(DDEV, NOTICE) << "Device driver opened successfuly!";
+
+ /* configure antennas */
+ if (!set_antennas()) {
+ LOGC(DDEV, FATAL) << "IPC antenna setting failed";
+ goto out_close;
+ }
+
+ return iface == MULTI_ARFCN ? MULTI_ARFCN : NORMAL;
+
+out_close:
+ LOGC(DDEV, FATAL) << "Error in IPC open, closing";
+ return -1;
+}
+
+void IPCDevice::manually_poll_sock_fds()
+{
+ struct timeval wait = { 0, 100000 };
+ fd_set crfds, cwfds;
+ int max_fd = 0;
+
+ FD_ZERO(&crfds);
+ FD_ZERO(&cwfds);
+ for (unsigned int i = 0; i < chans; i++) {
+ struct osmo_fd *curr_fd = &sk_chan_state[i].conn_bfd;
+ max_fd = curr_fd->fd > max_fd ? curr_fd->fd : max_fd;
+
+ if (curr_fd->when & OSMO_FD_READ)
+ FD_SET(curr_fd->fd, &crfds);
+ if (curr_fd->when & OSMO_FD_WRITE)
+ FD_SET(curr_fd->fd, &cwfds);
+ }
+
+ select(max_fd + 1, &crfds, &cwfds, 0, &wait);
+
+ for (unsigned int i = 0; i < chans; i++) {
+ int flags = 0;
+ struct osmo_fd *ofd = &sk_chan_state[i].conn_bfd;
+
+ if (FD_ISSET(ofd->fd, &crfds)) {
+ flags |= OSMO_FD_READ;
+ FD_CLR(ofd->fd, &crfds);
+ }
+
+ if (FD_ISSET(ofd->fd, &cwfds)) {
+ flags |= OSMO_FD_WRITE;
+ FD_CLR(ofd->fd, &cwfds);
+ }
+ if (flags)
+ ipc_chan_sock_cb(ofd, flags);
+ }
+}
+
+bool IPCDevice::send_chan_wait_rsp(uint32_t chan, struct msgb *msg_to_send, uint32_t expected_rsp_msg_id)
+{
+ struct timeval timer_now, timeout;
+
+ sk_chan_state[chan].messages_processed_mask = 0;
+ ipc_sock_send(&sk_chan_state[chan], msg_to_send);
+
+ gettimeofday(&timeout, 0);
+ timeout.tv_sec += 2;
+
+ while (!(sk_chan_state[chan].messages_processed_mask & (1 << (expected_rsp_msg_id - IPC_IF_CHAN_MSG_OFFSET)))) {
+ /* just poll here, we're already in select, so there is no other way to drive
+ * the fds and "wait" for a response or retry */
+ manually_poll_sock_fds();
+
+ gettimeofday(&timer_now, 0);
+ if (timercmp(&timer_now, &timeout, >))
+ return false;
+ }
+ return true;
+}
+
+bool IPCDevice::send_all_chan_wait_rsp(uint32_t msgid_to_send, uint32_t msgid_to_expect)
+{
+ struct msgb *msg;
+ struct ipc_sk_chan_if *ipc_prim;
+ struct timeval timer_now, timeout;
+
+ for (unsigned int i = 0; i < chans; i++) {
+ msg = ipc_msgb_alloc(msgid_to_send);
+ if (!msg)
+ return -ENOMEM;
+ ipc_prim = (struct ipc_sk_chan_if *)msg->data;
+ ipc_prim->u.start_req.dummy = 0;
+
+ sk_chan_state[i].messages_processed_mask = 0;
+ ipc_sock_send(&sk_chan_state[i], msg);
+ }
+
+ gettimeofday(&timeout, 0);
+ timeout.tv_sec += 2;
+
+ unsigned int msg_received_count = 0;
+ while (msg_received_count != chans) {
+ msg_received_count = 0;
+
+ /* just poll here, we're already in select, so there is no other way to drive
+ * the fds and "wait" for a response or retry */
+ manually_poll_sock_fds();
+
+ for (unsigned int i = 0; i < sk_chan_state.size(); i++)
+ if (sk_chan_state[i].messages_processed_mask &
+ (1 << (msgid_to_expect - IPC_IF_CHAN_MSG_OFFSET)))
+ msg_received_count++;
+
+ gettimeofday(&timer_now, 0);
+ if (timercmp(&timer_now, &timeout, >))
+ return false;
+ }
+
+ return true;
+}
+
+/* the call stack is rather difficult here, we're already in select:
+>~"#0 IPCDevice::start (this=<optimized out>) at IPCDevice.cpp:789\n"
+>~"#1 in RadioInterface::start (this=0x614000001640) at radioInterface.cpp:187\n"
+>~"#2 in Transceiver::start (this=<optimized out>) at Transceiver.cpp:293\n"
+>~"#3 in Transceiver::ctrl_sock_handle_rx (this=0x61600000b180, chan=0) at Transceiver.cpp:838\n"
+>~"#4 in Transceiver::ctrl_sock_cb (bfd=<optimized out>, flags=1) at Transceiver.cpp:168\n"
+>~"#5 in osmo_fd_disp_fds (_rset=<optimized out>, _wset=<optimized out>, _eset=<optimized out>) at select.c:227\n"
+>~"#6 _osmo_select_main (polling=<optimized out>) at select.c:265\n"
+>~"#7 in osmo_select_main (polling=128) at select.c:274\n"
+>~"#8 in main (argc=<optimized out>, argv=<optimized out>) at osmo-trx.cpp:649\n"
+ * */
+bool IPCDevice::start()
+{
+ LOGC(DDEV, INFO) << "starting IPC...";
+
+ if (started) {
+ LOGC(DDEV, ERR) << "Device already started";
+ return true;
+ }
+
+ if (!(send_all_chan_wait_rsp(IPC_IF_MSG_START_REQ, IPC_IF_MSG_START_CNF))) {
+ LOGC(DDEV, ERR) << "start timeout!";
+ return false;
+ }
+
+ int max_bufs_to_flush = 0;
+ for (unsigned int i = 0; i < shm_dec->num_chans; i++) {
+ int buf_per_chan = shm_dec->channels[i]->ul_stream->num_buffers;
+ max_bufs_to_flush = max_bufs_to_flush < buf_per_chan ? buf_per_chan : max_bufs_to_flush;
+ }
+ flush_recv(max_bufs_to_flush);
+
+ started = true;
+ return true;
+}
+
+bool IPCDevice::stop()
+{
+ if (!started)
+ return true;
+
+ if (!(send_all_chan_wait_rsp(IPC_IF_MSG_STOP_REQ, IPC_IF_MSG_STOP_CNF))) {
+ LOGC(DDEV, ERR) << "stop timeout!";
+ return false;
+ }
+
+ LOGC(DDEV, NOTICE) << "All channels stopped, terminating...";
+
+ started = false;
+ return true;
+}
+
+double IPCDevice::maxRxGain()
+{
+ return current_info_cnf.chan_info[0].max_rx_gain;
+}
+
+double IPCDevice::minRxGain()
+{
+ return current_info_cnf.chan_info[0].min_rx_gain;
+}
+
+int IPCDevice::getNominalTxPower(size_t chan)
+{
+ return current_info_cnf.chan_info[chan].nominal_tx_power;
+}
+
+double IPCDevice::setPowerAttenuation(int atten, size_t chan)
+{
+ struct msgb *msg;
+ struct ipc_sk_chan_if *ipc_prim;
+
+ if (chan >= chans)
+ return 0;
+
+ LOGCHAN(chan, DDEV, NOTICE) << "Setting TX attenuation to " << atten << " dB"
+ << " chan " << chan;
+
+ msg = ipc_msgb_alloc(IPC_IF_MSG_SETTXATTN_REQ);
+ if (!msg)
+ return -ENOMEM;
+ ipc_prim = (struct ipc_sk_chan_if *)msg->data;
+ ipc_prim->u.txatten_req.attenuation = atten;
+
+ if (!send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETTXATTN_CNF))
+ LOGCHAN(chan, DDEV, ERROR) << "Setting TX attenuation timeout! ";
+
+ return atten;
+}
+
+double IPCDevice::getPowerAttenuation(size_t chan)
+{
+ if (chan >= chans)
+ return 0;
+
+ return tx_attenuation[chan];
+}
+
+double IPCDevice::setRxGain(double dB, size_t chan)
+{
+ struct msgb *msg;
+ struct ipc_sk_chan_if *ipc_prim;
+
+ if (dB > maxRxGain())
+ dB = maxRxGain();
+ if (dB < minRxGain())
+ dB = minRxGain();
+
+ LOGCHAN(chan, DDEV, NOTICE) << "Setting RX gain to " << dB << " dB";
+
+ msg = ipc_msgb_alloc(IPC_IF_MSG_SETGAIN_REQ);
+ if (!msg)
+ return -ENOMEM;
+ ipc_prim = (struct ipc_sk_chan_if *)msg->data;
+ ipc_prim->u.set_gain_req.is_tx = 0;
+ ipc_prim->u.set_gain_req.gain = dB;
+
+ if (!send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETGAIN_CNF))
+ LOGCHAN(chan, DDEV, ERROR) << "Setting RX gain timeout! ";
+
+ return rx_gains[chan];
+}
+
+bool IPCDevice::flush_recv(size_t num_pkts)
+{
+ std::vector<uint16_t> tmp(4096);
+ uint64_t tmps;
+ uint32_t read = 0;
+
+ for (uint32_t j = 0; j < num_pkts; j++) {
+ for (unsigned int i = 0; i < chans; i++)
+ read = ipc_shm_read(shm_io_rx_streams[i], (uint16_t *)&tmp.front(), 4096 / 2, &tmps, 3);
+ }
+ ts_initial = tmps + read;
+
+ LOGC(DDEV, INFO) << "Initial timestamp " << ts_initial << std::endl;
+ return true;
+}
+
+bool IPCDevice::setRxAntenna(const std::string &ant, size_t chan)
+{
+ return true;
+}
+
+std::string IPCDevice::getRxAntenna(size_t chan)
+{
+ return "";
+}
+
+bool IPCDevice::setTxAntenna(const std::string &ant, size_t chan)
+{
+ return true;
+}
+
+std::string IPCDevice::getTxAntenna(size_t chan)
+{
+ return "";
+}
+
+bool IPCDevice::requiresRadioAlign()
+{
+ return false;
+}
+
+GSM::Time IPCDevice::minLatency()
+{
+ /* UNUSED */
+ return GSM::Time(0, 0);
+}
+
+/** Returns the starting write Timestamp*/
+TIMESTAMP IPCDevice::initialWriteTimestamp(void)
+{
+ return ts_initial;
+}
+
+/** Returns the starting read Timestamp*/
+TIMESTAMP IPCDevice::initialReadTimestamp(void)
+{
+ return ts_initial;
+}
+
+// NOTE: Assumes sequential reads
+int IPCDevice::readSamples(std::vector<short *> &bufs, int len, bool *overrun, TIMESTAMP timestamp, bool *underrun)
+{
+ int rc, num_smpls; //, expect_smpls;
+ ssize_t avail_smpls;
+ TIMESTAMP expect_timestamp;
+ unsigned int i;
+
+ if (bufs.size() != chans) {
+ LOGC(DDEV, ERROR) << "Invalid channel combination " << bufs.size();
+ return -1;
+ }
+
+ *overrun = false;
+ *underrun = false;
+
+ timestamp += current_open_cnf.path_delay;
+
+ /* Check that timestamp is valid */
+ rc = rx_buffers[0]->avail_smpls(timestamp);
+ if (rc < 0) {
+ LOGC(DDEV, ERROR) << rx_buffers[0]->str_code(rc);
+ LOGC(DDEV, ERROR) << rx_buffers[0]->str_status(timestamp);
+ return 0;
+ }
+
+ for (i = 0; i < chans; i++) {
+ /* Receive samples from HW until we have enough */
+ while ((avail_smpls = rx_buffers[i]->avail_smpls(timestamp)) < len) {
+ uint64_t recv_timestamp = 0;
+
+ thread_enable_cancel(false);
+ num_smpls = ipc_shm_read(shm_io_rx_streams[i], (uint16_t *)bufs[i], len - avail_smpls,
+ &recv_timestamp, 1);
+ expect_timestamp = timestamp + avail_smpls;
+ thread_enable_cancel(true);
+
+ if (num_smpls == -ETIMEDOUT)
+ continue;
+
+ LOGCHAN(i, DDEV, DEBUG)
+ "Received timestamp = " << (TIMESTAMP)recv_timestamp << " (" << num_smpls << ")";
+
+ if (expect_timestamp != (TIMESTAMP)recv_timestamp)
+ LOGCHAN(i, DDEV, ERROR) << "Unexpected recv buffer timestamp: expect "
+ << expect_timestamp << " got " << recv_timestamp << ", diff="
+ << ((uint64_t)recv_timestamp > expect_timestamp ?
+ (uint64_t)recv_timestamp - expect_timestamp :
+ expect_timestamp - recv_timestamp);
+
+ rc = rx_buffers[i]->write(bufs[i], num_smpls, (TIMESTAMP)recv_timestamp);
+ if (rc < 0) {
+ LOGCHAN(i, DDEV, ERROR)
+ << rx_buffers[i]->str_code(rc) << " num smpls: " << num_smpls << " chan: " << i;
+ LOGCHAN(i, DDEV, ERROR) << rx_buffers[i]->str_status(timestamp);
+ if (rc != smpl_buf::ERROR_OVERFLOW)
+ return 0;
+ }
+ }
+ }
+
+ /* We have enough samples */
+ for (size_t i = 0; i < rx_buffers.size(); i++) {
+ rc = rx_buffers[i]->read(bufs[i], len, timestamp);
+ if ((rc < 0) || (rc != len)) {
+ LOGCHAN(i, DDEV, ERROR) << rx_buffers[i]->str_code(rc) << ". "
+ << rx_buffers[i]->str_status(timestamp) << ", (len=" << len << ")";
+ return 0;
+ }
+ }
+
+ return len;
+}
+
+int IPCDevice::writeSamples(std::vector<short *> &bufs, int len, bool *underrun, unsigned long long timestamp)
+{
+ int rc = 0;
+ unsigned int i;
+
+ if (bufs.size() != chans) {
+ LOGC(DDEV, ERROR) << "Invalid channel combination " << bufs.size();
+ return -1;
+ }
+
+ *underrun = false;
+
+ for (i = 0; i < chans; i++) {
+ LOGCHAN(i, DDEV, DEBUG) << "send buffer of len " << len << " timestamp " << std::hex << timestamp;
+ thread_enable_cancel(false);
+ rc = ipc_shm_enqueue(shm_io_tx_streams[i], timestamp, len, (uint16_t *)bufs[i]);
+ thread_enable_cancel(true);
+
+ if (rc != len) {
+ LOGCHAN(i, DDEV, ERROR) << "LMS: Device Tx timed out (" << rc << " vs exp " << len << ").";
+ return -1;
+ }
+ }
+
+ return rc;
+}
+
+bool IPCDevice::updateAlignment(TIMESTAMP timestamp)
+{
+ return true;
+}
+
+bool IPCDevice::setTxFreq(double wFreq, size_t chan)
+{
+ struct msgb *msg;
+ struct ipc_sk_chan_if *ipc_prim;
+ LOGCHAN(chan, DDEV, NOTICE) << "Setting Tx Freq to " << wFreq << " Hz";
+
+ msg = ipc_msgb_alloc(IPC_IF_MSG_SETFREQ_REQ);
+ if (!msg)
+ return -ENOMEM;
+ ipc_prim = (struct ipc_sk_chan_if *)msg->data;
+ ipc_prim->u.set_freq_req.is_tx = 1;
+ ipc_prim->u.set_freq_req.freq = wFreq;
+
+ return send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETFREQ_CNF);
+}
+
+bool IPCDevice::setRxFreq(double wFreq, size_t chan)
+{
+ struct msgb *msg;
+ struct ipc_sk_chan_if *ipc_prim;
+ LOGCHAN(chan, DDEV, NOTICE) << "Setting Rx Freq to " << wFreq << " Hz";
+
+ msg = ipc_msgb_alloc(IPC_IF_MSG_SETFREQ_REQ);
+ if (!msg)
+ return -ENOMEM;
+ ipc_prim = (struct ipc_sk_chan_if *)msg->data;
+ ipc_prim->u.set_freq_req.is_tx = 0;
+ ipc_prim->u.set_freq_req.freq = wFreq;
+
+ return send_chan_wait_rsp(chan, msg, IPC_IF_MSG_SETFREQ_CNF);
+}
+
+RadioDevice *RadioDevice::make(size_t tx_sps, size_t rx_sps, InterfaceType iface, size_t chans, double lo_offset,
+ const std::vector<std::string> &tx_paths, const std::vector<std::string> &rx_paths)
+{
+ if (tx_sps != rx_sps) {
+ LOGC(DDEV, ERROR) << "IPC Requires tx_sps == rx_sps";
+ return NULL;
+ }
+ if (lo_offset != 0.0) {
+ LOGC(DDEV, ERROR) << "IPC doesn't support lo_offset";
+ return NULL;
+ }
+ return new IPCDevice(tx_sps, rx_sps, iface, chans, lo_offset, tx_paths, rx_paths);
+}