remove manual tti counters from the rrc

lib/include/srslte/interfaces/ue_interfaces.h

@@ -606,8 +606,15 @@ public:
   virtual void start_prach_configuration()       = 0;
 };
 
+// Generic Task Management + Timer interface for upper stack
+class task_handler_interface_lte
+{
+public:
+  virtual srslte::timer_handler::unique_timer get_unique_timer() = 0;
+};
+
 // STACK interface for RRC
-class stack_interface_rrc
+class stack_interface_rrc : public task_handler_interface_lte
 {
 public:
   virtual void              start_cell_search()                                              = 0;
@@ -628,13 +635,6 @@ class phy_interface_stack_lte : public phy_interface_mac_lte, public phy_interfa
 {
 };
 
-// Generic Task Management + Timer interface for upper stack
-class task_handler_interface_lte
-{
-public:
-  virtual srslte::timer_handler::unique_timer get_unique_timer() = 0;
-};
-
 } // namespace srsue
 
 #endif // SRSLTE_UE_INTERFACES_H

srsue/hdr/stack/rrc/rrc.h

@@ -274,7 +274,7 @@ class rrc : public rrc_interface_nas,
             public srslte::timer_callback
 {
 public:
-  rrc(srslte::log* rrc_log_, task_handler_interface_lte* task_handler_);
+  rrc(srslte::log* rrc_log_, stack_interface_rrc* stack_);
   ~rrc();
 
   void init(phy_interface_rrc_lte* phy_,
@@ -284,7 +284,6 @@ public:
             nas_interface_rrc*     nas_,
             usim_interface_rrc*    usim_,
             gw_interface_rrc*      gw_,
-            stack_interface_rrc*   stack_,
             const rrc_args_t&      args_);
 
   void stop();
@@ -361,17 +360,16 @@ private:
 
   void process_pcch(srslte::unique_byte_buffer_t pdu);
 
-  task_handler_interface_lte* task_handler = nullptr;
-  srslte::byte_buffer_pool*   pool         = nullptr;
-  srslte::log*                rrc_log      = nullptr;
-  phy_interface_rrc_lte*      phy          = nullptr;
-  mac_interface_rrc*          mac          = nullptr;
-  rlc_interface_rrc*          rlc          = nullptr;
-  pdcp_interface_rrc*         pdcp         = nullptr;
-  nas_interface_rrc*          nas          = nullptr;
-  usim_interface_rrc*         usim         = nullptr;
-  gw_interface_rrc*           gw           = nullptr;
-  stack_interface_rrc*        stack        = nullptr;
+  stack_interface_rrc*      stack   = nullptr;
+  srslte::byte_buffer_pool* pool    = nullptr;
+  srslte::log*              rrc_log = nullptr;
+  phy_interface_rrc_lte*    phy     = nullptr;
+  mac_interface_rrc*        mac     = nullptr;
+  rlc_interface_rrc*        rlc     = nullptr;
+  pdcp_interface_rrc*       pdcp    = nullptr;
+  nas_interface_rrc*        nas     = nullptr;
+  usim_interface_rrc*       usim    = nullptr;
+  gw_interface_rrc*         gw      = nullptr;
 
   srslte::unique_byte_buffer_t dedicated_info_nas;
 

srsue/hdr/stack/rrc/rrc_procedures.h

@@ -240,14 +240,16 @@ public:
   explicit go_idle_proc(rrc* rrc_);
   srslte::proc_outcome_t init();
   srslte::proc_outcome_t step();
+  srslte::proc_outcome_t react(bool timeout);
   static const char*     name() { return "Go Idle"; }
 
 private:
-  bool                  wait = false;
-  rrc*                  rrc_ptr;
   static const uint32_t rlc_flush_timeout = 2000;
 
-  uint32_t rlc_flush_counter;
+  rrc*                                rrc_ptr;
+  srslte::timer_handler::unique_timer rlc_flush_timer;
+
+  bool wait = false;
 };
 
 class rrc::cell_reselection_proc

srsue/hdr/stack/ue_stack_lte.h

@@ -56,7 +56,6 @@ class ue_stack_lte final : public ue_stack_base,
                            public stack_interface_gw,
                            public stack_interface_mac,
                            public stack_interface_rrc,
-                           public task_handler_interface_lte,
                            public srslte::thread
 {
 public:

srsue/src/stack/rrc/rrc.cc

@@ -83,7 +83,8 @@ bool cell_t::is_sib_scheduled(uint32_t sib_index) const
   Base functions
 *******************************************************************************/
 
-rrc::rrc(srslte::log* rrc_log_, task_handler_interface_lte* task_handler_) :
+rrc::rrc(srslte::log* rrc_log_, stack_interface_rrc* stack_) :
+  stack(stack_),
   state(RRC_STATE_IDLE),
   last_state(RRC_STATE_CONNECTED),
   drb_up(false),
@@ -98,8 +99,7 @@ rrc::rrc(srslte::log* rrc_log_, task_handler_interface_lte* task_handler_) :
   plmn_searcher(this),
   cell_reselector(this),
   connection_reest(this),
-  serving_cell(unique_cell_t(new cell_t())),
-  task_handler(task_handler_)
+  serving_cell(unique_cell_t(new cell_t()))
 {
   measurements = std::unique_ptr<rrc_meas>(new rrc_meas(rrc_log));
 }
@@ -136,7 +136,6 @@ void rrc::init(phy_interface_rrc_lte* phy_,
                nas_interface_rrc*     nas_,
                usim_interface_rrc*    usim_,
                gw_interface_rrc*      gw_,
-               stack_interface_rrc*   stack_,
                const rrc_args_t&      args_)
 {
   pool  = byte_buffer_pool::get_instance();
@@ -147,7 +146,6 @@ void rrc::init(phy_interface_rrc_lte* phy_,
   nas   = nas_;
   usim  = usim_;
   gw    = gw_;
-  stack = stack_;
 
   args = args_;
 
@@ -156,12 +154,12 @@ void rrc::init(phy_interface_rrc_lte* phy_,
 
   security_is_activated = false;
 
-  t300 = task_handler->get_unique_timer();
-  t301 = task_handler->get_unique_timer();
-  t302 = task_handler->get_unique_timer();
-  t310 = task_handler->get_unique_timer();
-  t311 = task_handler->get_unique_timer();
-  t304 = task_handler->get_unique_timer();
+  t300 = stack->get_unique_timer();
+  t301 = stack->get_unique_timer();
+  t302 = stack->get_unique_timer();
+  t310 = stack->get_unique_timer();
+  t311 = stack->get_unique_timer();
+  t304 = stack->get_unique_timer();
 
   ue_identity_configured = false;
 

srsue/src/stack/rrc/rrc_meas.cc

@@ -337,7 +337,7 @@ void rrc::rrc_meas::var_meas_report_list::set_measId(const uint32_t            m
   // triggerType ‘event’ as well as for triggerType ‘periodical’
   if (!varMeasReportList.at(measId).periodic_timer.is_valid() &&
       (report_cfg.report_amount.to_number() > 1 || report_cfg.report_amount.to_number() == -1)) {
-    varMeasReportList.at(measId).periodic_timer = rrc_ptr->task_handler->get_unique_timer();
+    varMeasReportList.at(measId).periodic_timer = rrc_ptr->stack->get_unique_timer();
     varMeasReportList.at(measId).periodic_timer.set(report_cfg.report_interv.to_number());
   }
   varMeasReportList.at(measId).report_cfg       = std::move(report_cfg);

srsue/src/stack/rrc/rrc_procedures.cc

@@ -242,8 +242,8 @@ compute_si_window(uint32_t tti, uint32_t sib_index, uint32_t n, uint32_t T, cons
 rrc::si_acquire_proc::si_acquire_proc(rrc* parent_) :
   rrc_ptr(parent_),
   log_h(parent_->rrc_log),
-  si_acq_timeout(rrc_ptr->task_handler->get_unique_timer()),
-  si_acq_retry_timer(rrc_ptr->task_handler->get_unique_timer())
+  si_acq_timeout(rrc_ptr->stack->get_unique_timer()),
+  si_acq_retry_timer(rrc_ptr->stack->get_unique_timer())
 {
   // SIB acquisition procedure timeout.
   // NOTE: The standard does not specify this timeout
@@ -985,15 +985,24 @@ proc_outcome_t rrc::process_pcch_proc::react(paging_complete e)
  *        Go Idle procedure
  *************************************/
 
-rrc::go_idle_proc::go_idle_proc(srsue::rrc* rrc_) : rrc_ptr(rrc_) {}
+rrc::go_idle_proc::go_idle_proc(srsue::rrc* rrc_) : rrc_ptr(rrc_)
+{
+  rlc_flush_timer = rrc_ptr->stack->get_unique_timer();
+  rlc_flush_timer.set(rlc_flush_timeout, [this](uint32_t tid) { rrc_ptr->idle_setter.trigger(true); });
+}
 
 proc_outcome_t rrc::go_idle_proc::init()
 {
-  rlc_flush_counter = 0;
   Info("Starting...\n");
   return step();
 }
 
+srslte::proc_outcome_t rrc::go_idle_proc::react(bool timeout)
+{
+  rrc_ptr->leave_connected();
+  return proc_outcome_t::success;
+}
+
 proc_outcome_t rrc::go_idle_proc::step()
 {
   if (rrc_ptr->state == RRC_STATE_IDLE) {
@@ -1003,12 +1012,11 @@ proc_outcome_t rrc::go_idle_proc::step()
 
   // If the RLC SRB1 is not suspended
   // wait for max. 2s for RLC on SRB1 to be flushed
-  if (rrc_ptr->rlc->is_suspended(RB_ID_SRB1) || not rrc_ptr->rlc->has_data(RB_ID_SRB1) ||
-      ++rlc_flush_counter > rlc_flush_timeout) {
+  if (rrc_ptr->rlc->is_suspended(RB_ID_SRB1) || not rrc_ptr->rlc->has_data(RB_ID_SRB1)) {
     rrc_ptr->leave_connected();
     return proc_outcome_t::success;
   } else {
-    Debug("Postponing transition to RRC IDLE (%d ms < %d ms)\n", rlc_flush_counter, rlc_flush_timeout);
+    Debug("Postponing transition to RRC IDLE (%d ms < %d ms)\n", rlc_flush_timer.time_elapsed(), rlc_flush_timeout);
   }
   return proc_outcome_t::yield;
 }

srsue/src/stack/ue_stack_lte.cc

@@ -41,7 +41,7 @@ ue_stack_lte::ue_stack_lte() :
   mac(&mac_log),
   rrc(&rrc_log, this),
   pdcp(&timers, &pdcp_log),
-  nas(&timers),
+  nas(this),
   thread("STACK"),
   pending_tasks(512),
   background_tasks(2),
@@ -139,7 +139,7 @@ int ue_stack_lte::init(const stack_args_t& args_, srslte::logger* logger_)
   rlc.init(&pdcp, &rrc, &timers, 0 /* RB_ID_SRB0 */);
   pdcp.init(&rlc, &rrc, gw);
   nas.init(usim.get(), &rrc, gw, args.nas);
-  rrc.init(phy, &mac, &rlc, &pdcp, &nas, usim.get(), gw, this, args.rrc);
+  rrc.init(phy, &mac, &rlc, &pdcp, &nas, usim.get(), gw, args.rrc);
 
   running = true;
   start(STACK_MAIN_THREAD_PRIO);
@@ -315,9 +315,9 @@ void ue_stack_lte::run_tti_impl(uint32_t tti, uint32_t tti_jump)
     uint32_t next_tti = TTI_SUB(tti, (tti_jump - i - 1));
     mac.run_tti(next_tti);
     rrc.run_tti();
-    nas.run_tti();
     timers.step_all();
   }
+  nas.run_tti();
 
   if (args.have_tti_time_stats) {
     std::chrono::nanoseconds dur = tti_tprof.stop();

srsue/test/common/dummy_classes.h

@@ -26,10 +26,13 @@
 
 namespace srsue {
 
-class stack_dummy : public task_handler_interface_lte
+class stack_dummy : public stack_interface_rrc
 {
 public:
   srslte::timer_handler::unique_timer get_unique_timer() override { return timers.get_unique_timer(); }
+  void                                start_cell_search() override {}
+  void                                start_cell_select(const phy_interface_rrc_lte::phy_cell_t* cell) override {}
+  srslte::tti_point get_current_tti() override { return srslte::tti_point{timers.get_cur_time() % 10240}; }
 
   srslte::timer_handler timers{100};
 };

srsue/test/upper/rrc_meas_test.cc

@@ -108,7 +108,7 @@ private:
 class nas_test : public srsue::nas
 {
 public:
-  nas_test(srslte::timer_handler* t) : srsue::nas(t) {}
+  nas_test(srsue::task_handler_interface_lte* t) : srsue::nas(t) {}
   bool is_attached() override { return false; }
 };
 
@@ -167,20 +167,20 @@ private:
 
 class rrc_test : public rrc
 {
-  srslte::timer_handler* timers = nullptr;
+  srsue::stack_dummy* stack = nullptr;
 
 public:
-  rrc_test(srslte::log* log_, stack_dummy* task_handler_) : rrc(log_, task_handler_), timers(&task_handler_->timers)
+  rrc_test(srslte::log* log_, stack_dummy* stack_) : rrc(log_, stack_), stack(stack_)
   {
     pool     = srslte::byte_buffer_pool::get_instance();
-    nastest  = std::unique_ptr<nas_test>(new nas_test(timers));
-    pdcptest = std::unique_ptr<pdcp_test>(new pdcp_test(log_, timers));
+    nastest  = std::unique_ptr<nas_test>(new nas_test(stack));
+    pdcptest = std::unique_ptr<pdcp_test>(new pdcp_test(log_, &stack->timers));
   };
-  void init() { rrc::init(&phytest, nullptr, nullptr, pdcptest.get(), nastest.get(), nullptr, nullptr, nullptr, {}); }
+  void init() { rrc::init(&phytest, nullptr, nullptr, pdcptest.get(), nastest.get(), nullptr, nullptr, {}); }
 
   void run_tti(uint32_t tti_)
   {
-    timers->step_all();
+    stack->timers.step_all();
     rrc::run_tti();
   }