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@ -21,6 +21,11 @@
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#define RLC_AM_NR_WINDOW_SIZE 2048
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#define Debug(fmt, ...) logger->debug("%s: " fmt, rb_name, ##__VA_ARGS__)
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#define Info(fmt, ...) logger->info("%s: " fmt, rb_name, ##__VA_ARGS__)
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#define Warning(fmt, ...) logger->warning("%s: " fmt, rb_name, ##__VA_ARGS__)
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#define Error(fmt, ...) logger->error("%s: " fmt, rb_name, ##__VA_ARGS__)
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namespace srsran {
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const static uint32_t max_tx_queue_size = 256;
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@ -35,17 +40,18 @@ rlc_am_nr_tx::rlc_am_nr_tx(rlc_am* parent_) : parent(parent_), rlc_am_base_tx(&p
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bool rlc_am_nr_tx::configure(const rlc_config_t& cfg_)
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{
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cfg = cfg_.am_nr;
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cfg = cfg_.am_nr;
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rb_name = parent->rb_name;
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if (cfg.tx_sn_field_length != rlc_am_nr_sn_size_t::size12bits) {
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logger->warning("RLC AM NR only supports 12 bit SN length.");
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Warning("RLC AM NR only supports 12 bit SN length.");
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return false;
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}
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if (cfg_.tx_queue_length > max_tx_queue_size) {
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logger->error("Configuring tx queue length of %d PDUs too big. Maximum value is %d.",
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cfg_.tx_queue_length,
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max_tx_queue_size);
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Error("configuring tx queue length of %d PDUs too big. Maximum value is %d.",
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cfg_.tx_queue_length,
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max_tx_queue_size);
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return false;
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}
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@ -53,6 +59,7 @@ bool rlc_am_nr_tx::configure(const rlc_config_t& cfg_)
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tx_enabled = true;
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Debug("RLC AM NR tx entity configured.");
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return true;
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}
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@ -64,35 +71,33 @@ bool rlc_am_nr_tx::has_data()
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uint32_t rlc_am_nr_tx::read_pdu(uint8_t* payload, uint32_t nof_bytes)
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{
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logger->debug("MAC opportunity - %d bytes", nof_bytes);
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std::lock_guard<std::mutex> lock(mutex);
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if (not tx_enabled) {
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logger->debug("RLC entity not active. Not generating PDU.");
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Debug("RLC entity not active. Not generating PDU.");
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return 0;
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}
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logger->debug("tx_window size - %zu PDUs", tx_window.size());
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Debug("MAC opportunity - bytes=%d, tx_window size=%zu PDUs", nof_bytes, tx_window.size());
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// Tx STATUS if requested
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if (do_status()) {
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unique_byte_buffer_t tx_pdu = srsran::make_byte_buffer();
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if (tx_pdu == nullptr) {
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logger->error("Couldn't allocate PDU in %s().", __FUNCTION__);
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Error("couldn't allocate PDU in %s().", __FUNCTION__);
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return 0;
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}
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build_status_pdu(tx_pdu.get(), nof_bytes);
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memcpy(payload, tx_pdu->msg, tx_pdu->N_bytes);
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logger->debug("Status PDU built - %d bytes", tx_pdu->N_bytes);
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Debug("status PDU built - %d bytes", tx_pdu->N_bytes);
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return tx_pdu->N_bytes;
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}
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// Retransmit if required
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if (not retx_queue.empty()) {
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logger->info("Retransmission required. Retransmission queue size: %d", retx_queue.size());
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Info("re-transmission required. Retransmission queue size: %d", retx_queue.size());
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unique_byte_buffer_t tx_pdu = srsran::make_byte_buffer();
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if (tx_pdu == nullptr) {
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logger->error("Couldn't allocate PDU in %s().", __FUNCTION__);
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Error("couldn't allocate PDU in %s().", __FUNCTION__);
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return 0;
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}
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int retx_err = build_retx_pdu(tx_pdu, nof_bytes);
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@ -106,9 +111,8 @@ uint32_t rlc_am_nr_tx::read_pdu(uint8_t* payload, uint32_t nof_bytes)
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if (current_sdu.rlc_sn != INVALID_RLC_SN) {
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if (not tx_window.has_sn(current_sdu.rlc_sn)) {
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current_sdu.rlc_sn = INVALID_RLC_SN;
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logger->error("%s SDU currently being segmented does not exist in tx_window. Aborting segmentation SN=%d",
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rb_name,
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current_sdu.rlc_sn);
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Error("SDU currently being segmented does not exist in tx_window. Aborting segmentation SN=%d",
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current_sdu.rlc_sn);
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return 0;
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}
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return build_continuation_sdu_segment(tx_window[current_sdu.rlc_sn], payload, nof_bytes);
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@ -116,21 +120,21 @@ uint32_t rlc_am_nr_tx::read_pdu(uint8_t* payload, uint32_t nof_bytes)
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// Check whether there is something to TX
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if (tx_sdu_queue.is_empty()) {
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logger->info("No data available to be sent");
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Info("no data available to be sent");
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return 0;
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}
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// Read new SDU from TX queue
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unique_byte_buffer_t tx_sdu;
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logger->debug("Reading from RLC SDU queue. Queue size %d", tx_sdu_queue.size());
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Debug("reading from RLC SDU queue. Queue size %d", tx_sdu_queue.size());
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do {
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tx_sdu = tx_sdu_queue.read();
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} while (tx_sdu == nullptr && tx_sdu_queue.size() != 0);
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if (tx_sdu != nullptr) {
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logger->debug("Read RLC SDU - %d bytes", tx_sdu->N_bytes);
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Debug("read RLC SDU - %d bytes", tx_sdu->N_bytes);
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} else {
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logger->info("No SDUs left in the tx queue.");
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Info("no SDUs left in the tx queue.");
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return 0;
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}
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@ -139,14 +143,14 @@ uint32_t rlc_am_nr_tx::read_pdu(uint8_t* payload, uint32_t nof_bytes)
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rlc_amd_tx_pdu_nr& tx_pdu = tx_window.add_pdu(st.tx_next);
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tx_pdu.buf = srsran::make_byte_buffer();
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if (tx_pdu.buf == nullptr) {
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logger->error("Couldn't allocate PDU in %s().", __FUNCTION__);
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Error("couldn't allocate PDU in %s().", __FUNCTION__);
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return 0;
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}
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// Segment new SDU if necessary
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uint16_t hdr_size = 2;
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if (tx_sdu->N_bytes + hdr_size > nof_bytes) {
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logger->info("Trying to build PDU segment from SDU.");
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Info("trying to build PDU segment from SDU.");
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return build_new_sdu_segment(std::move(tx_sdu), tx_pdu, payload, nof_bytes);
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}
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@ -166,14 +170,14 @@ uint32_t rlc_am_nr_tx::read_pdu(uint8_t* payload, uint32_t nof_bytes)
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// Write header
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uint32_t len = rlc_am_nr_write_data_pdu_header(hdr, tx_sdu.get());
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if (len > nof_bytes) {
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logger->error("Error writing AMD PDU header");
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Error("error writing AMD PDU header");
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}
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// Update TX Next
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st.tx_next = (st.tx_next + 1) % MOD;
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memcpy(payload, tx_sdu->msg, tx_sdu->N_bytes);
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logger->debug("Wrote RLC PDU - %d bytes", tx_sdu->N_bytes);
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Debug("wrote RLC PDU - %d bytes", tx_sdu->N_bytes);
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return tx_sdu->N_bytes;
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}
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@ -183,22 +187,21 @@ int rlc_am_nr_tx::build_new_sdu_segment(unique_byte_buffer_t tx_sdu,
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uint8_t* payload,
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uint32_t nof_bytes)
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{
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logger->info("Creating new SDU segment. Tx SDU (%d B), nof_bytes=%d B ", tx_sdu->N_bytes, nof_bytes);
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Info("creating new SDU segment. Tx SDU (%d B), nof_bytes=%d B ", tx_sdu->N_bytes, nof_bytes);
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// Sanity check: can this SDU be sent this in a single PDU?
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if ((tx_sdu->N_bytes + 2) < nof_bytes) {
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logger->error("Calling build_new_sdu_segment(), but there are enough bytes to tx in a single PDU. Tx SDU (%d B), "
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"nof_bytes=%d B ",
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tx_sdu->N_bytes,
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nof_bytes);
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Error("calling build_new_sdu_segment(), but there are enough bytes to tx in a single PDU. Tx SDU (%d B), "
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"nof_bytes=%d B ",
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tx_sdu->N_bytes,
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nof_bytes);
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return 0;
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}
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// Sanity check: can this SDU be sent considering header overhead?
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if (3 < nof_bytes) { // Only two bytes of header, as SO is 0
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logger->error(
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"Cannot build new sdu_segment, there are not enough bytes allocated to tx header plus data. nof_bytes=%d",
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nof_bytes);
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Error("cannot build new sdu_segment, there are not enough bytes allocated to tx header plus data. nof_bytes=%d",
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nof_bytes);
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return 0;
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}
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@ -216,7 +219,7 @@ int rlc_am_nr_tx::build_new_sdu_segment(unique_byte_buffer_t tx_sdu,
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// Write header
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uint32_t hdr_len = rlc_am_nr_write_data_pdu_header(hdr, payload);
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if (hdr_len > nof_bytes) {
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logger->error("Error writing AMD PDU header");
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logger->error("error writing AMD PDU header");
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}
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// Copy PDU to payload
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@ -236,18 +239,18 @@ int rlc_am_nr_tx::build_new_sdu_segment(unique_byte_buffer_t tx_sdu,
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int rlc_am_nr_tx::build_continuation_sdu_segment(rlc_amd_tx_pdu_nr& tx_pdu, uint8_t* payload, uint32_t nof_bytes)
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{
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logger->info("Continuing SDU segment. SN=%d, Tx SDU (%d B), nof_bytes=%d B ",
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current_sdu.rlc_sn,
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current_sdu.buf->N_bytes,
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nof_bytes);
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Info("continuing SDU segment. SN=%d, Tx SDU (%d B), nof_bytes=%d B ",
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current_sdu.rlc_sn,
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current_sdu.buf->N_bytes,
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nof_bytes);
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// Sanity check: is there an initial SDU segment?
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if (tx_pdu.segment_list.empty()) {
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logger->error("build_continuation_sdu_segment was called, but there was no initial segment. SN=%d, Tx SDU (%d B), "
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"nof_bytes=%d B ",
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current_sdu.rlc_sn,
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current_sdu.buf->N_bytes,
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nof_bytes);
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Error("build_continuation_sdu_segment was called, but there was no initial segment. SN=%d, Tx SDU (%d B), "
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"nof_bytes=%d B ",
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current_sdu.rlc_sn,
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current_sdu.buf->N_bytes,
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nof_bytes);
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current_sdu.rlc_sn = INVALID_RLC_SN;
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current_sdu.buf = nullptr;
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return 0;
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@ -255,9 +258,8 @@ int rlc_am_nr_tx::build_continuation_sdu_segment(rlc_amd_tx_pdu_nr& tx_pdu, uint
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// Sanity check: can this SDU be sent considering header overhead?
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if (5 < nof_bytes) { // Four bytes of header, as SO is present
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logger->error(
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"Cannot build new sdu_segment, there are not enough bytes allocated to tx header plus data. nof_bytes=%d",
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nof_bytes);
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Error("cannot build new sdu_segment, there are not enough bytes allocated to tx header plus data. nof_bytes=%d",
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nof_bytes);
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return 0;
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}
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@ -265,12 +267,11 @@ int rlc_am_nr_tx::build_continuation_sdu_segment(rlc_amd_tx_pdu_nr& tx_pdu, uint
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std::list<rlc_amd_tx_pdu_nr::pdu_segment>::iterator it = tx_pdu.segment_list.end();
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--it;
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uint32_t last_byte = it->so + it->payload_len;
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logger->debug("Continuing SDU segment. SN=%d, last byte transmitted %d", tx_pdu.rlc_sn, last_byte);
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Debug("continuing SDU segment. SN=%d, last byte transmitted %d", tx_pdu.rlc_sn, last_byte);
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// Sanity check: last byte must be smaller than SDU
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if (current_sdu.buf->N_bytes < last_byte) {
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logger->error(
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"Last byte transmitted larger than SDU len. SDU len=%d B, last_byte=%d B", tx_pdu.buf->N_bytes, last_byte);
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Error("last byte transmitted larger than SDU len. SDU len=%d B, last_byte=%d B", tx_pdu.buf->N_bytes, last_byte);
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return 0;
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}
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@ -280,17 +281,17 @@ int rlc_am_nr_tx::build_continuation_sdu_segment(rlc_amd_tx_pdu_nr& tx_pdu, uint
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: rlc_nr_si_field_t::last_segment;
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if (si == rlc_nr_si_field_t::neither_first_nor_last_segment) {
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logger->info("Grant is not large enough for full SDU. "
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"SDU bytes left %d, nof_bytes %d, ",
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segment_payload_full_len,
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nof_bytes);
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Info("grant is not large enough for full SDU. "
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"SDU bytes left %d, nof_bytes %d, ",
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segment_payload_full_len,
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nof_bytes);
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segment_payload_len = nof_bytes - 4;
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segment_payload_full_len = nof_bytes;
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} else {
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logger->info("Grant is large enough for full SDU."
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"SDU bytes left %d, nof_bytes %d, ",
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segment_payload_full_len,
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nof_bytes);
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Info("grant is large enough for full SDU."
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"SDU bytes left %d, nof_bytes %d, ",
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segment_payload_full_len,
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nof_bytes);
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}
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|
|
// Prepare header
|
|
|
|
@ -307,7 +308,7 @@ int rlc_am_nr_tx::build_continuation_sdu_segment(rlc_amd_tx_pdu_nr& tx_pdu, uint
|
|
|
|
|
// Write header
|
|
|
|
|
uint32_t hdr_len = rlc_am_nr_write_data_pdu_header(hdr, payload);
|
|
|
|
|
if (hdr_len > nof_bytes) {
|
|
|
|
|
logger->error("Error writing AMD PDU header");
|
|
|
|
|
Error("error writing AMD PDU header");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -321,11 +322,11 @@ int rlc_am_nr_tx::build_continuation_sdu_segment(rlc_amd_tx_pdu_nr& tx_pdu, uint
|
|
|
|
|
tx_pdu.segment_list.push_back(segment_info);
|
|
|
|
|
|
|
|
|
|
if (si == rlc_nr_si_field_t::neither_first_nor_last_segment) {
|
|
|
|
|
logger->info("Grant is not large enough for full SDU."
|
|
|
|
|
"Storing SDU segment info");
|
|
|
|
|
Info("grant is not large enough for full SDU."
|
|
|
|
|
"Storing SDU segment info");
|
|
|
|
|
} else {
|
|
|
|
|
logger->info("Grant is large enough for full SDU."
|
|
|
|
|
"Removing current SDU info");
|
|
|
|
|
Info("grant is large enough for full SDU."
|
|
|
|
|
"Removing current SDU info");
|
|
|
|
|
current_sdu.rlc_sn = INVALID_RLC_SN;
|
|
|
|
|
current_sdu.buf = nullptr;
|
|
|
|
|
}
|
|
|
|
@ -337,7 +338,7 @@ int rlc_am_nr_tx::build_retx_pdu(unique_byte_buffer_t& tx_pdu, uint32_t nof_byte
|
|
|
|
|
{
|
|
|
|
|
// Check there is at least 1 element before calling front()
|
|
|
|
|
if (retx_queue.empty()) {
|
|
|
|
|
logger->error("In build_retx_pdu(): retx_queue is empty");
|
|
|
|
|
Error("in build_retx_pdu(): retx_queue is empty");
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -345,12 +346,12 @@ int rlc_am_nr_tx::build_retx_pdu(unique_byte_buffer_t& tx_pdu, uint32_t nof_byte
|
|
|
|
|
|
|
|
|
|
// Sanity check - drop any retx SNs not present in tx_window
|
|
|
|
|
while (not tx_window.has_sn(retx.sn)) {
|
|
|
|
|
logger->warning("%s SN=%d not in tx window. Ignoring retx.", parent->rb_name, retx.sn);
|
|
|
|
|
Warning("SN=%d not in tx window. Ignoring retx.", retx.sn);
|
|
|
|
|
retx_queue.pop();
|
|
|
|
|
if (!retx_queue.empty()) {
|
|
|
|
|
retx = retx_queue.front();
|
|
|
|
|
} else {
|
|
|
|
|
logger->warning("%s empty retx queue, cannot provide retx PDU", parent->rb_name);
|
|
|
|
|
Warning("empty retx queue, cannot provide retx PDU");
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
@ -361,7 +362,7 @@ int rlc_am_nr_tx::build_retx_pdu(unique_byte_buffer_t& tx_pdu, uint32_t nof_byte
|
|
|
|
|
|
|
|
|
|
// Check if we exceed allocated number of bytes
|
|
|
|
|
if (hdr_len + tx_window[retx.sn].buf->N_bytes > nof_bytes) {
|
|
|
|
|
logger->warning("%s segmentation not supported yet. Cannot provide retx PDU", parent->rb_name);
|
|
|
|
|
Warning("segmentation not supported yet. Cannot provide retx PDU");
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
|
// TODO Consider re-segmentation
|
|
|
|
@ -388,18 +389,18 @@ int rlc_am_nr_tx::build_retx_pdu(unique_byte_buffer_t& tx_pdu, uint32_t nof_byte
|
|
|
|
|
|
|
|
|
|
uint32_t rlc_am_nr_tx::build_status_pdu(byte_buffer_t* payload, uint32_t nof_bytes)
|
|
|
|
|
{
|
|
|
|
|
logger->info("Generating Status PDU. Bytes available:%d", nof_bytes);
|
|
|
|
|
Info("generating status PDU. Bytes available:%d", nof_bytes);
|
|
|
|
|
rlc_am_nr_status_pdu_t tx_status;
|
|
|
|
|
int pdu_len = rx->get_status_pdu(&tx_status, nof_bytes);
|
|
|
|
|
if (pdu_len == SRSRAN_ERROR) {
|
|
|
|
|
logger->debug("%s Deferred Status PDU. Cause: Failed to acquire rx lock", rb_name);
|
|
|
|
|
Debug("deferred status PDU. Cause: Failed to acquire rx lock");
|
|
|
|
|
pdu_len = 0;
|
|
|
|
|
} else if (pdu_len > 0 && nof_bytes >= static_cast<uint32_t>(pdu_len)) {
|
|
|
|
|
logger->debug("Generated status PDU. Bytes:%d", pdu_len);
|
|
|
|
|
Debug("generated status PDU. Bytes:%d", pdu_len);
|
|
|
|
|
log_rlc_am_nr_status_pdu_to_string(logger->info, "%s tx status PDU - %s", &tx_status, rb_name);
|
|
|
|
|
pdu_len = rlc_am_nr_write_status_pdu(tx_status, rlc_am_nr_sn_size_t::size12bits, payload);
|
|
|
|
|
} else {
|
|
|
|
|
logger->info("%s Cannot tx status PDU - %d bytes available, %d bytes required", rb_name, nof_bytes, pdu_len);
|
|
|
|
|
Info("cannot tx status PDU - %d bytes available, %d bytes required", nof_bytes, pdu_len);
|
|
|
|
|
pdu_len = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -428,7 +429,7 @@ void rlc_am_nr_tx::handle_control_pdu(uint8_t* payload, uint32_t nof_bytes)
|
|
|
|
|
? status.ack_sn
|
|
|
|
|
: status.nacks[0].nack_sn - 1; // Stop processing ACKs at the first NACK, if it exists.
|
|
|
|
|
if (stop_sn > st.tx_next) {
|
|
|
|
|
logger->error("Received ACK or NACK larger than TX_NEXT. Ignoring status report");
|
|
|
|
|
Error("Received ACK or NACK larger than TX_NEXT. Ignoring status report");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
for (uint32_t sn = st.tx_next_ack; sn < stop_sn; sn++) {
|
|
|
|
@ -437,7 +438,7 @@ void rlc_am_nr_tx::handle_control_pdu(uint8_t* payload, uint32_t nof_bytes)
|
|
|
|
|
st.tx_next_ack = sn + 1;
|
|
|
|
|
// TODO notify PDCP
|
|
|
|
|
} else {
|
|
|
|
|
logger->error("Missing ACKed SN from TX window");
|
|
|
|
|
Error("Missing ACKed SN from TX window");
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
@ -488,35 +489,32 @@ uint32_t rlc_am_nr_tx::get_buffer_state()
|
|
|
|
|
|
|
|
|
|
void rlc_am_nr_tx::get_buffer_state(uint32_t& n_bytes_new, uint32_t& n_bytes_prio)
|
|
|
|
|
{
|
|
|
|
|
logger->debug("Buffer state requested, %s", rb_name);
|
|
|
|
|
std::lock_guard<std::mutex> lock(mutex);
|
|
|
|
|
|
|
|
|
|
logger->debug("%s Buffer state - do_status=%s", rb_name, do_status() ? "yes" : "no");
|
|
|
|
|
Debug("buffer state - do_status=%s", do_status() ? "yes" : "no");
|
|
|
|
|
|
|
|
|
|
// Bytes needed for status report
|
|
|
|
|
if (do_status()) {
|
|
|
|
|
n_bytes_prio += rx->get_status_pdu_length();
|
|
|
|
|
logger->debug("%s Buffer state - total status report: %d bytes", rb_name, n_bytes_prio);
|
|
|
|
|
Debug("buffer state - total status report: %d bytes", n_bytes_prio);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Bytes needed for retx
|
|
|
|
|
if (not retx_queue.empty()) {
|
|
|
|
|
rlc_amd_retx_t& retx = retx_queue.front();
|
|
|
|
|
logger->debug("%s Buffer state - retx - SN=%d, Segment: %s, %d:%d",
|
|
|
|
|
parent->rb_name,
|
|
|
|
|
retx.sn,
|
|
|
|
|
retx.is_segment ? "true" : "false",
|
|
|
|
|
retx.so_start,
|
|
|
|
|
retx.so_end);
|
|
|
|
|
Debug("buffer state - retx - SN=%d, Segment: %s, %d:%d",
|
|
|
|
|
retx.sn,
|
|
|
|
|
retx.is_segment ? "true" : "false",
|
|
|
|
|
retx.so_start,
|
|
|
|
|
retx.so_end);
|
|
|
|
|
if (tx_window.has_sn(retx.sn)) {
|
|
|
|
|
int req_bytes = retx.so_end - retx.so_start;
|
|
|
|
|
int hdr_req_bytes = retx.is_segment ? 4 : 2; // Segmentation not supported yet
|
|
|
|
|
if (req_bytes <= 0) {
|
|
|
|
|
logger->error("In get_buffer_state(): Removing retx.sn=%d from queue", retx.sn);
|
|
|
|
|
Error("in get_buffer_state(): Removing retx with SN=%d from queue", retx.sn);
|
|
|
|
|
retx_queue.pop();
|
|
|
|
|
} else {
|
|
|
|
|
n_bytes_prio += (req_bytes + hdr_req_bytes);
|
|
|
|
|
logger->debug("Buffer state - retx: %d bytes", n_bytes_prio);
|
|
|
|
|
Debug("buffer state - retx: %d bytes", n_bytes_prio);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
@ -527,10 +525,10 @@ void rlc_am_nr_tx::get_buffer_state(uint32_t& n_bytes_new, uint32_t& n_bytes_pri
|
|
|
|
|
|
|
|
|
|
// Room needed for fixed header of data PDUs
|
|
|
|
|
n_bytes_new += 2 * n_sdus; // TODO make header size configurable
|
|
|
|
|
logger->debug("%s Total buffer state - %d SDUs (%d B)", rb_name, n_sdus, n_bytes_new + n_bytes_prio);
|
|
|
|
|
Debug("total buffer state - %d SDUs (%d B)", n_sdus, n_bytes_new + n_bytes_prio);
|
|
|
|
|
|
|
|
|
|
if (bsr_callback) {
|
|
|
|
|
logger->debug("%s Calling BSR callback - %d new_tx, %d priority bytes", parent->rb_name, n_bytes_new, n_bytes_prio);
|
|
|
|
|
Debug("calling BSR callback - %d new_tx, %d priority bytes", n_bytes_new, n_bytes_prio);
|
|
|
|
|
bsr_callback(parent->lcid, n_bytes_new, n_bytes_prio);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
@ -596,8 +594,8 @@ rlc_am_nr_rx::rlc_am_nr_rx(rlc_am* parent_) :
|
|
|
|
|
|
|
|
|
|
bool rlc_am_nr_rx::configure(const rlc_config_t& cfg_)
|
|
|
|
|
{
|
|
|
|
|
cfg = cfg_.am_nr;
|
|
|
|
|
|
|
|
|
|
cfg = cfg_.am_nr;
|
|
|
|
|
rb_name = parent->rb_name;
|
|
|
|
|
// Configure status prohibit timer
|
|
|
|
|
if (cfg.t_status_prohibit > 0) {
|
|
|
|
|
status_prohibit_timer.set(static_cast<uint32_t>(cfg.t_status_prohibit),
|
|
|
|
@ -607,10 +605,13 @@ bool rlc_am_nr_rx::configure(const rlc_config_t& cfg_)
|
|
|
|
|
// Configure t_reassembly timer
|
|
|
|
|
if (cfg.t_reassembly > 0) {
|
|
|
|
|
reassembly_timer.set(static_cast<uint32_t>(cfg.t_reassembly), [this](uint32_t timerid) { timer_expired(timerid); });
|
|
|
|
|
logger->info("Configured reassembly timer. t-Reassembly=%d ms", cfg.t_reassembly);
|
|
|
|
|
Info("configured reassembly timer. t-Reassembly=%d ms", cfg.t_reassembly);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
mod_nr = (cfg.rx_sn_field_length == rlc_am_nr_sn_size_t::size12bits) ? 4096 : 262144;
|
|
|
|
|
|
|
|
|
|
Debug("RLC AM NR configured rx entity.");
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -632,17 +633,13 @@ void rlc_am_nr_rx::handle_data_pdu(uint8_t* payload, uint32_t nof_bytes)
|
|
|
|
|
|
|
|
|
|
// Check whether SDU is within Rx Window
|
|
|
|
|
if (!inside_rx_window(header.sn)) {
|
|
|
|
|
logger->info("%s SN=%d outside rx window [%d:%d] - discarding",
|
|
|
|
|
parent->rb_name,
|
|
|
|
|
header.sn,
|
|
|
|
|
st.rx_next,
|
|
|
|
|
st.rx_next + RLC_AM_NR_WINDOW_SIZE);
|
|
|
|
|
Info("SN=%d outside rx window [%d:%d] - discarding", header.sn, st.rx_next, st.rx_next + RLC_AM_NR_WINDOW_SIZE);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Section 5.2.3.2.2, discard duplicate PDUs
|
|
|
|
|
if (rx_window.has_sn(header.sn) && rx_window[header.sn].fully_received) {
|
|
|
|
|
logger->info("%s Discarding duplicate SN=%d", parent->rb_name, header.sn);
|
|
|
|
|
Info("discarding duplicate SN=%d", header.sn);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -661,7 +658,7 @@ void rlc_am_nr_rx::handle_data_pdu(uint8_t* payload, uint32_t nof_bytes)
|
|
|
|
|
|
|
|
|
|
// Check poll bit
|
|
|
|
|
if (header.p) {
|
|
|
|
|
logger->info("%s Status packet requested through polling bit", parent->rb_name);
|
|
|
|
|
Info("status packet requested through polling bit");
|
|
|
|
|
do_status = true;
|
|
|
|
|
status_prohibit_timer.stop();
|
|
|
|
|
}
|
|
|
|
@ -765,7 +762,7 @@ int rlc_am_nr_rx::handle_full_data_sdu(const rlc_am_nr_pdu_header_t& header, con
|
|
|
|
|
rlc_amd_rx_sdu_nr_t& rx_sdu = rx_window.add_pdu(header.sn);
|
|
|
|
|
rx_sdu.buf = srsran::make_byte_buffer();
|
|
|
|
|
if (rx_sdu.buf == nullptr) {
|
|
|
|
|
logger->error("Fatal Error: Couldn't allocate PDU in %s.", __FUNCTION__);
|
|
|
|
|
Error("fatal error. Couldn't allocate PDU in %s.", __FUNCTION__);
|
|
|
|
|
rx_window.remove_pdu(header.sn);
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
@ -773,11 +770,7 @@ int rlc_am_nr_rx::handle_full_data_sdu(const rlc_am_nr_pdu_header_t& header, con
|
|
|
|
|
|
|
|
|
|
// check available space for payload
|
|
|
|
|
if (nof_bytes > rx_sdu.buf->get_tailroom()) {
|
|
|
|
|
logger->error("%s Discarding SN=%d of size %d B (available space %d B)",
|
|
|
|
|
parent->rb_name,
|
|
|
|
|
header.sn,
|
|
|
|
|
nof_bytes,
|
|
|
|
|
rx_sdu.buf->get_tailroom());
|
|
|
|
|
Error("discarding SN=%d of size %d B (available space %d B)", header.sn, nof_bytes, rx_sdu.buf->get_tailroom());
|
|
|
|
|
rx_window.remove_pdu(header.sn);
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
@ -793,7 +786,7 @@ int rlc_am_nr_rx::handle_segment_data_sdu(const rlc_am_nr_pdu_header_t& header,
|
|
|
|
|
uint32_t nof_bytes)
|
|
|
|
|
{
|
|
|
|
|
if (header.si == rlc_nr_si_field_t::full_sdu) {
|
|
|
|
|
logger->error("Called %s but the SI implies a full SDU. SN=%d", __FUNCTION__, header.sn);
|
|
|
|
|
Error("called %s but the SI implies a full SDU. SN=%d", __FUNCTION__, header.sn);
|
|
|
|
|
return SRSRAN_ERROR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -801,11 +794,11 @@ int rlc_am_nr_rx::handle_segment_data_sdu(const rlc_am_nr_pdu_header_t& header,
|
|
|
|
|
|
|
|
|
|
// Log SDU segment reception
|
|
|
|
|
if (header.si == rlc_nr_si_field_t::first_segment) { // Check whether it's a full SDU
|
|
|
|
|
logger->info("Initial segment PDU. SN=%d.", header.sn);
|
|
|
|
|
Info("Initial segment PDU. SN=%d.", header.sn);
|
|
|
|
|
} else if (header.si == rlc_nr_si_field_t::neither_first_nor_last_segment) {
|
|
|
|
|
logger->info("Middle segment PDU. SN=%d.", header.sn);
|
|
|
|
|
Info("Middle segment PDU. SN=%d.", header.sn);
|
|
|
|
|
} else if (header.si == rlc_nr_si_field_t::last_segment) {
|
|
|
|
|
logger->info("Final segment PDU. SN=%d.", header.sn);
|
|
|
|
|
Info("Final segment PDU. SN=%d.", header.sn);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Add a new SDU to the RX window if necessary
|
|
|
|
@ -816,7 +809,7 @@ int rlc_am_nr_rx::handle_segment_data_sdu(const rlc_am_nr_pdu_header_t& header,
|
|
|
|
|
pdu_segment.header = header;
|
|
|
|
|
pdu_segment.buf = srsran::make_byte_buffer();
|
|
|
|
|
if (pdu_segment.buf == nullptr) {
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logger->error("Fatal Error: Couldn't allocate PDU in %s.", __FUNCTION__);
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Error("fatal error. Couldn't allocate PDU in %s.", __FUNCTION__);
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return SRSRAN_ERROR;
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}
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memcpy(pdu_segment.buf->msg, payload + hdr_len, nof_bytes - hdr_len); // Don't copy header
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@ -828,10 +821,10 @@ int rlc_am_nr_rx::handle_segment_data_sdu(const rlc_am_nr_pdu_header_t& header,
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// Check weather all segments have been received
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rx_sdu.fully_received = have_all_segments_been_received(rx_sdu.segments);
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if (rx_sdu.fully_received) {
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logger->info("Fully received segmented SDU. SN=%d.", header.sn);
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Info("Fully received segmented SDU. SN=%d.", header.sn);
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rx_sdu.buf = srsran::make_byte_buffer();
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if (rx_sdu.buf == nullptr) {
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logger->error("Fatal Error: Couldn't allocate PDU in %s.", __FUNCTION__);
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Error("fatal error. Couldn't allocate PDU in %s.", __FUNCTION__);
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rx_window.remove_pdu(header.sn);
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return SRSRAN_ERROR;
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}
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@ -900,13 +893,13 @@ void rlc_am_nr_rx::timer_expired(uint32_t timeout_id)
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// Status Prohibit
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if (status_prohibit_timer.is_valid() && status_prohibit_timer.id() == timeout_id) {
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logger->debug("%s Status prohibit timer expired after %dms", parent->rb_name, status_prohibit_timer.duration());
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|
Debug("Status prohibit timer expired after %dms", status_prohibit_timer.duration());
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return;
|
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}
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|
// Reassembly
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|
if (reassembly_timer.is_valid() && reassembly_timer.id() == timeout_id) {
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|
|
logger->debug("%s Reassembly timer expired after %dms", parent->rb_name, reassembly_timer.duration());
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|
|
Debug("Reassembly timer expired after %dms", reassembly_timer.duration());
|
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|
|
/*
|
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|
|
|
* 5.2.3.2.4 Actions when t-Reassembly expires:
|
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|
|
* - update RX_Highest_Status to the SN of the first RLC SDU with SN >= RX_Next_Status_Trigger for which not
|
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|
|
@ -1003,15 +996,16 @@ bool rlc_am_nr_rx::have_all_segments_been_received(const std::list<rlc_amd_rx_pd
|
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|
|
|
}
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
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|
|
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|
|
|
/*
|
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|
|
|
* Debug Helpers
|
|
|
|
|
*/
|
|
|
|
|
void rlc_am_nr_rx::debug_state()
|
|
|
|
|
{
|
|
|
|
|
logger->debug("RX entity state: Rx_Next %d, Rx_Next_Status_Trigger %d, Rx_Highest_Status %d, Rx_Next_Highest",
|
|
|
|
|
st.rx_next,
|
|
|
|
|
st.rx_next_status_trigger,
|
|
|
|
|
st.rx_highest_status,
|
|
|
|
|
st.rx_next_highest);
|
|
|
|
|
Debug("RX entity state: Rx_Next %d, Rx_Next_Status_Trigger %d, Rx_Highest_Status %d, Rx_Next_Highest",
|
|
|
|
|
st.rx_next,
|
|
|
|
|
st.rx_next_status_trigger,
|
|
|
|
|
st.rx_highest_status,
|
|
|
|
|
st.rx_next_highest);
|
|
|
|
|
}
|
|
|
|
|
} // namespace srsran
|
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|