Batch of data race fixes in the following classes: RLC AM, Intra measure, UL HARQ, PHY common.

srsue/hdr/phy/scell/intra_measure_lte.h

@@ -74,7 +74,8 @@ private:
 
   srslog::basic_logger& logger;
   srsran_cell_t         serving_cell   = {};  ///< Current serving cell in the EARFCN, to avoid reporting it
-  uint32_t              current_earfcn = 0;  ///< Current EARFCN
+  std::atomic<uint32_t> current_earfcn = {0}; ///< Current EARFCN
+  std::mutex            mutex;
 
   /// LTE-based measuring objects
   scell_recv                 scell_rx;               ///< Secondary cell searcher

srsue/hdr/stack/mac/ul_harq.h

@@ -118,7 +118,7 @@ private:
     lockable_grant cur_grant;
 
     uint32_t              pid;
-    uint32_t current_tx_nb;
+    std::atomic<uint32_t> current_tx_nb = {0};
     uint32_t              current_irv;
     bool                  harq_feedback;
     bool                  is_grant_configured;

srsue/src/phy/phy_common.cc

@@ -306,12 +306,14 @@ bool phy_common::is_any_ul_pending_ack()
 #define tti_pusch_hi(sf)                                                                                               \
   (sf->tti +                                                                                                           \
    (cell.frame_type == SRSRAN_FDD ? FDD_HARQ_DELAY_UL_MS                                                               \
-                                  : I_phich ? 7 : k_pusch[sf->tdd_config.sf_config][sf->tti % 10]) +                   \
+    : I_phich                     ? 7                                                                                  \
+                                  : k_pusch[sf->tdd_config.sf_config][sf->tti % 10]) +                                                     \
    (FDD_HARQ_DELAY_DL_MS - FDD_HARQ_DELAY_UL_MS))
 #define tti_pusch_gr(sf)                                                                                               \
   (sf->tti +                                                                                                           \
    (cell.frame_type == SRSRAN_FDD ? FDD_HARQ_DELAY_UL_MS                                                               \
-                                  : dci->ul_idx == 1 ? 7 : k_pusch[sf->tdd_config.sf_config][sf->tti % 10]) +          \
+    : dci->ul_idx == 1            ? 7                                                                                  \
+                                  : k_pusch[sf->tdd_config.sf_config][sf->tti % 10]) +                                            \
    (FDD_HARQ_DELAY_DL_MS - FDD_HARQ_DELAY_UL_MS))
 
 // SF->TTI is at which Format0 dci is received

srsue/src/phy/scell/intra_measure_lte.cc

@@ -42,8 +42,11 @@ void intra_measure_lte::init(uint32_t cc_idx, const args_t& args)
 
 void intra_measure_lte::set_primary_cell(uint32_t earfcn, srsran_cell_t cell)
 {
-  current_earfcn = earfcn;
+  {
+    std::lock_guard<std::mutex> lock(mutex);
     serving_cell   = cell;
+  }
+  current_earfcn = earfcn;
   set_current_sf_len((uint32_t)SRSRAN_SF_LEN_PRB(cell.nof_prb));
 }
 
@@ -51,8 +54,14 @@ bool intra_measure_lte::measure_rat(measure_context_t context, std::vector<cf_t>
 {
   std::set<uint32_t> cells_to_measure = context.active_pci;
 
+  srsran_cell_t serving_cell_copy{};
+  {
+    std::lock_guard<std::mutex> lock(mutex);
+    serving_cell_copy = serving_cell;
+  }
+
   // Detect new cells using PSS/SSS
-  scell_rx.find_cells(buffer.data(), serving_cell, context.meas_len_ms, cells_to_measure);
+  scell_rx.find_cells(buffer.data(), serving_cell_copy, context.meas_len_ms, cells_to_measure);
 
   // Initialise empty neighbour cell list
   std::vector<phy_meas_t> neighbour_cells = {};
@@ -62,10 +71,10 @@ bool intra_measure_lte::measure_rat(measure_context_t context, std::vector<cf_t>
   // Use Cell Reference signal to measure cells in the time domain for all known active PCI
   for (const uint32_t& id : cells_to_measure) {
     // Do not measure serving cell here since it's measured by workers
-    if (id == serving_cell.id) {
+    if (id == serving_cell_copy.id) {
       continue;
     }
-    srsran_cell_t cell = serving_cell;
+    srsran_cell_t cell = serving_cell_copy;
     cell.id            = id;
 
     if (srsran_refsignal_dl_sync_set_cell(&refsignal_dl_sync, cell) < SRSRAN_SUCCESS) {

srsue/src/stack/mac/ul_harq.cc

@@ -317,7 +317,7 @@ void ul_harq_entity::ul_harq_process::generate_retx(mac_interface_phy_lte::mac_g
 
     Info("UL %d:  Adaptive retx=%d, RV=%d, TBS=%d, HI=%s, ndi=%d, prev_ndi=%d",
          pid,
-         current_tx_nb,
+         current_tx_nb.load(),
          get_rv(),
          grant.tb.tbs,
          harq_feedback ? "ACK" : "NACK",
@@ -337,7 +337,7 @@ void ul_harq_entity::ul_harq_process::generate_retx(mac_interface_phy_lte::mac_g
     // Non-adaptive retx are only sent if HI=NACK. If HI=ACK but no dci was received do not reset PID
     Info("UL %d:  Non-Adaptive retx=%d, RV=%d, TBS=%d, HI=%s",
          pid,
-         current_tx_nb,
+         current_tx_nb.load(),
          get_rv(),
          cur_grant.get_tbs(),
          harq_feedback ? "ACK" : "NACK");