Merge branch 'tx_enabled_issue' into next

lib/include/srslte/common/buffer_pool.h

@@ -183,7 +183,7 @@ public:
     }
     b->reset();
     if (!pool->deallocate(b)) {
-      fprintf(stderr, "Error deallocating PDU: Addr=0x%lx not found in pool\n", (uint64_t) b);
+      printf("Error deallocating PDU: Addr=0x%lx not found in pool\n", (uint64_t) b);
     }
     b = NULL;
   }

lib/include/srslte/upper/rlc_common.h

@@ -163,6 +163,7 @@ public:
                     srslte::mac_interface_timers      *mac_timers_) = 0;
   virtual void configure(srslte_rlc_config_t cnfg) = 0;
   virtual void stop() = 0;
+  virtual void reestablish() = 0;
   virtual void empty_queue() = 0; 
 
   virtual rlc_mode_t    get_mode() = 0;

lib/include/srslte/upper/rlc_tm.h

@@ -49,6 +49,7 @@ public:
             mac_interface_timers      *mac_timers);
   void configure(srslte_rlc_config_t cnfg);
   void stop();
+  void reestablish();
   void empty_queue(); 
 
   rlc_mode_t    get_mode();

lib/include/srslte/upper/rlc_um.h

@@ -57,6 +57,7 @@ public:
             srsue::rrc_interface_rlc  *rrc_,
             mac_interface_timers      *mac_timers_);
   void configure(srslte_rlc_config_t cnfg);
+  void reestablish();
   void stop();
   void empty_queue(); 
   bool is_mrb();

lib/src/upper/rlc.cc

@@ -130,11 +130,7 @@ void rlc::reestablish() {
 // defaul lcid=0 is created
 void rlc::reset()
 {
-  for(uint32_t i=0; i<SRSLTE_N_RADIO_BEARERS; i++) {
+  stop();
-    if(rlc_array[i].active())
-      rlc_array[i].stop();
-  }
-
   rlc_array[0].init(RLC_MODE_TM, rlc_log, default_lcid, pdcp, rrc, mac_timers, buffer_size); // SRB0
 }
 

lib/src/upper/rlc_am.cc

@@ -104,6 +104,12 @@ void rlc_am::empty_queue() {
   while(tx_sdu_queue.try_read(&buf)) {
     pool->deallocate(buf);
   }
+  tx_sdu_queue.reset();
+}
+
+void rlc_am::reestablish() {
+  stop();
+  tx_enabled = true;
 }
 
 void rlc_am::stop()

lib/src/upper/rlc_entity.cc

@@ -87,7 +87,7 @@ void rlc_entity::configure(srslte_rlc_config_t cnfg)
 
 // Reestablishment stops the entity but does not destroy it. Mode will not change
 void rlc_entity::reestablish() {
-  rlc->stop();
+  rlc->reestablish();
 }
 
 // A call to stop() stops the entity and clears deletes the instance. Next time this entity can be used for other mode.

lib/src/upper/rlc_tm.cc

@@ -68,6 +68,12 @@ void rlc_tm::empty_queue()
   while(ul_queue.try_read(&buf)) {
     pool->deallocate(buf);
   }
+  ul_queue.reset();
+}
+
+void rlc_tm::reestablish() {
+  stop();
+  tx_enabled = true;
 }
 
 void rlc_tm::stop()

lib/src/upper/rlc_um.cc

@@ -122,6 +122,7 @@ void rlc_um::empty_queue() {
   while(tx_sdu_queue.try_read(&buf)) {
     pool->deallocate(buf);
   }
+  tx_sdu_queue.reset();
 }
 
 bool rlc_um::is_mrb()
@@ -129,6 +130,11 @@ bool rlc_um::is_mrb()
   return cfg.is_mrb;
 }
 
+void rlc_um::reestablish() {
+  stop();
+  tx_enabled = true;
+}
+
 void rlc_um::stop()
 {
   // Empty tx_sdu_queue before locking the mutex

srsenb/hdr/mac/scheduler.h

@@ -152,6 +152,8 @@ private:
   srslte::log *log_h; 
   rrc_interface_mac *rrc;
 
+  pthread_rwlock_t rwlock;
+
   cell_cfg_t cfg;
   sched_args_t sched_cfg; 
 

srsenb/src/enb.cc

@@ -205,6 +205,20 @@ bool enb::init(all_args_t *args_)
     fprintf(stderr, "Error parsing DRB configuration\n");
     return false; 
   }
+
+  uint32_t prach_freq_offset = rrc_cfg.sibs[1].sib.sib2.rr_config_common_sib.prach_cnfg.prach_cnfg_info.prach_freq_offset;
+
+  if (prach_freq_offset + 6 > cell_cfg.nof_prb) {
+    fprintf(stderr, "Invalid PRACH configuration: frequency offset=%d outside bandwidth limits\n", prach_freq_offset);
+    return false;
+  }
+
+  if (prach_freq_offset < rrc_cfg.cqi_cfg.nof_prb || prach_freq_offset < rrc_cfg.sr_cfg.nof_prb ) {
+    fprintf(stderr, "Invalid PRACH configuration: frequency offset=%d lower than CQI offset: %d or SR offset: %d\n",
+            prach_freq_offset, rrc_cfg.cqi_cfg.nof_prb, rrc_cfg.sr_cfg.nof_prb);
+    return false;
+  }
+
   rrc_cfg.inactivity_timeout_ms = args->expert.rrc_inactivity_timer;
   rrc_cfg.enable_mbsfn =  args->expert.enable_mbsfn;
   

srsenb/src/mac/scheduler.cc

@@ -62,11 +62,16 @@ sched::sched() : bc_aggr_level(0), rar_aggr_level(0), avail_rbg(0), P(0), start_
     bzero(rar_locations[i], sizeof(sched_ue::sched_dci_cce_t) * 10);
   }
   reset();
+
+  pthread_rwlock_init(&rwlock, NULL);
 }
 
 sched::~sched()
 {
   srslte_regs_free(&regs);
+  pthread_rwlock_wrlock(&rwlock);
+  pthread_rwlock_unlock(&rwlock);
+  pthread_rwlock_destroy(&rwlock);
 }
 
 void sched::init(rrc_interface_mac *rrc_, srslte::log* log)
@@ -86,8 +91,10 @@ int sched::reset()
   bzero(pending_msg3, sizeof(pending_msg3_t)*10);
   bzero(pending_rar, sizeof(sched_rar_t)*SCHED_MAX_PENDING_RAR);
   bzero(pending_sibs, sizeof(sched_sib_t)*MAX_SIBS); 
-  ue_db.clear();
   configured = false;
+  pthread_rwlock_wrlock(&rwlock);
+  ue_db.clear();
+  pthread_rwlock_unlock(&rwlock);
   return 0;
 }
 
@@ -152,9 +159,11 @@ int sched::cell_cfg(sched_interface::cell_cfg_t* cell_cfg)
 int sched::ue_cfg(uint16_t rnti, sched_interface::ue_cfg_t *ue_cfg)
 {
    // Add or config user
+  pthread_rwlock_rdlock(&rwlock);
   ue_db[rnti].set_cfg(rnti, ue_cfg, &cfg, &regs, log_h);
   ue_db[rnti].set_max_mcs(sched_cfg.pusch_max_mcs, sched_cfg.pdsch_max_mcs);
   ue_db[rnti].set_fixed_mcs(sched_cfg.pusch_mcs, sched_cfg.pdsch_mcs);
+  pthread_rwlock_unlock(&rwlock);
 
   return 0;
 }
@@ -162,167 +171,198 @@ int sched::ue_cfg(uint16_t rnti, sched_interface::ue_cfg_t *ue_cfg)
 int sched::ue_rem(uint16_t rnti)
 {
   int ret = 0;
+  pthread_rwlock_wrlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db.erase(rnti);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 bool sched::ue_exists(uint16_t rnti) 
 {
-  return (ue_db.count(rnti) == 1); 
+  pthread_rwlock_rdlock(&rwlock);
+  bool ret = (ue_db.count(rnti) == 1);
+  pthread_rwlock_unlock(&rwlock);
+  return ret;
 }
 
 void sched::phy_config_enabled(uint16_t rnti, bool enabled)
 {
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].phy_config_enabled(current_tti, enabled);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
   }
+  pthread_rwlock_unlock(&rwlock);
 }
 
 int sched::bearer_ue_cfg(uint16_t rnti, uint32_t lc_id, sched_interface::ue_bearer_cfg_t *cfg)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_bearer_cfg(lc_id, cfg);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::bearer_ue_rem(uint16_t rnti, uint32_t lc_id)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].rem_bearer(lc_id);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 uint32_t sched::get_dl_buffer(uint16_t rnti)
 {
   uint32_t ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ret = ue_db[rnti].get_pending_dl_new_data(current_tti);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 uint32_t sched::get_ul_buffer(uint16_t rnti)
 {
   uint32_t ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ret = ue_db[rnti].get_pending_ul_new_data(current_tti);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::dl_rlc_buffer_state(uint16_t rnti, uint32_t lc_id, uint32_t tx_queue, uint32_t retx_queue)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].dl_buffer_state(lc_id, tx_queue, retx_queue);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::dl_mac_buffer_state(uint16_t rnti, uint32_t ce_code)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].mac_buffer_state(ce_code);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::dl_ant_info(uint16_t rnti, LIBLTE_RRC_ANTENNA_INFO_DEDICATED_STRUCT *dl_ant_info) {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_dl_ant_info(dl_ant_info);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::dl_ack_info(uint32_t tti, uint16_t rnti, uint32_t tb_idx, bool ack)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ret = ue_db[rnti].set_ack_info(tti, tb_idx, ack);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::ul_crc_info(uint32_t tti, uint16_t rnti, bool crc)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_ul_crc(tti, crc);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::dl_ri_info(uint32_t tti, uint16_t rnti, uint32_t cqi_value)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_dl_ri(tti, cqi_value);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::dl_pmi_info(uint32_t tti, uint16_t rnti, uint32_t pmi_value)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_dl_pmi(tti, pmi_value);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::dl_cqi_info(uint32_t tti, uint16_t rnti, uint32_t cqi_value)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_dl_cqi(tti, cqi_value);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
@@ -345,79 +385,93 @@ int sched::dl_rach_info(uint32_t tti, uint32_t ra_id, uint16_t rnti, uint32_t es
 int sched::ul_cqi_info(uint32_t tti, uint16_t rnti, uint32_t cqi, uint32_t ul_ch_code)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_ul_cqi(tti, cqi, ul_ch_code);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::ul_bsr(uint16_t rnti, uint32_t lcid, uint32_t bsr, bool set_value)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].ul_buffer_state(lcid, bsr, set_value);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::ul_recv_len(uint16_t rnti, uint32_t lcid, uint32_t len)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].ul_recv_len(lcid, len);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::ul_phr(uint16_t rnti, int phr)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].ul_phr(phr);
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 int sched::ul_sr_info(uint32_t tti, uint16_t rnti)
 {
   int ret = 0;
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].set_sr();;
   } else {
     Error("User rnti=0x%x not found\n", rnti);
     ret = -1;
   }
+  pthread_rwlock_unlock(&rwlock);
   return ret;
 }
 
 void sched::tpc_inc(uint16_t rnti)
 {
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].tpc_inc();
   } else {
     Error("User rnti=0x%x not found\n", rnti);    
   }
+  pthread_rwlock_unlock(&rwlock);
 }
 
 void sched::tpc_dec(uint16_t rnti)
 {
+  pthread_rwlock_rdlock(&rwlock);
   if (ue_db.count(rnti)) {
     ue_db[rnti].tpc_dec();
   } else {
     Error("User rnti=0x%x not found\n", rnti);    
   }
+  pthread_rwlock_unlock(&rwlock);
 }
 
 /*******************************************************
@@ -714,6 +768,8 @@ int sched::dl_sched(uint32_t tti, sched_interface::dl_sched_res_t* sched_result)
   rar_aggr_level = 2; 
   bzero(sched_result, sizeof(sched_interface::dl_sched_res_t));
 
+  pthread_rwlock_rdlock(&rwlock);
+
   /* Schedule Broadcast data */
   sched_result->nof_bc_elems   += dl_sched_bc(sched_result->bc);
   
@@ -723,6 +779,8 @@ int sched::dl_sched(uint32_t tti, sched_interface::dl_sched_res_t* sched_result)
   /* Schedule pending RLC data */
   sched_result->nof_data_elems += dl_sched_data(sched_result->data);
 
+  pthread_rwlock_unlock(&rwlock);
+
   /* Set CFI */
   sched_result->cfi = current_cfi; 
   
@@ -733,10 +791,16 @@ int sched::dl_sched(uint32_t tti, sched_interface::dl_sched_res_t* sched_result)
 int sched::ul_sched(uint32_t tti, srsenb::sched_interface::ul_sched_res_t* sched_result)
 {
   typedef std::map<uint16_t, sched_ue>::iterator it_t;
+
   if (!configured) {
     return 0; 
   }
 
+  if (cfg.prach_freq_offset + 6 > cfg.cell.nof_prb) {
+    fprintf(stderr, "Invalid PRACH configuration: frequency offset=%d outside bandwidth limits\n", cfg.prach_freq_offset);
+    return -1;
+  }
+
   /* If dl_sched() not yet called this tti (this tti is +4ms advanced), reset CCE state */
   if (TTI_TX(current_tti) != tti) {
     bzero(used_cce, MAX_CCE*sizeof(bool));    
@@ -757,6 +821,8 @@ int sched::ul_sched(uint32_t tti, srsenb::sched_interface::ul_sched_res_t* sched
   bzero(sched_result, sizeof(sched_interface::ul_sched_res_t));
   ul_metric->reset_allocation(cfg.cell.nof_prb);
 
+  pthread_rwlock_rdlock(&rwlock);
+
   // Get HARQ process for this TTI 
   for(it_t iter=ue_db.begin(); iter!=ue_db.end(); ++iter) {
     sched_ue *user = (sched_ue*) &iter->second;
@@ -819,10 +885,6 @@ int sched::ul_sched(uint32_t tti, srsenb::sched_interface::ul_sched_res_t* sched
     ul_harq_proc::ul_alloc_t prach = {cfg.prach_freq_offset, 6};
     if(!ul_metric->update_allocation(prach)) {
       log_h->warning("SCHED: Failed to allocate PRACH RBs within (%d,%d)\n", prach.RB_start, prach.RB_start + prach.L);
-      if (prach.RB_start + prach.L > cfg.cell.nof_prb) {
-        fprintf(stderr, "Invalid PRACH configuration: frequency offset=%d outside bandwidth limits\n", cfg.prach_freq_offset);
-        return -1;
-      }
     }
     else {
       log_h->debug("SCHED: Allocated PRACH RBs within (%d,%d)\n", prach.RB_start, prach.RB_start + prach.L);
@@ -931,6 +993,8 @@ int sched::ul_sched(uint32_t tti, srsenb::sched_interface::ul_sched_res_t* sched
     user->get_ul_harq(current_tti)->reset_pending_data();
   }
 
+  pthread_rwlock_unlock(&rwlock);
+
   sched_result->nof_dci_elems   = nof_dci_elems;
   sched_result->nof_phich_elems = nof_phich_elems;
 

srsue/hdr/mac/ul_harq.h

@@ -227,7 +227,7 @@ private:
         if (grant->has_cqi_request && grant->phy_grant.ul.mcs.tbs == 0) {
           /* Only CQI reporting (without SCH) */
           memcpy(&action->phy_grant.ul, &grant->phy_grant.ul, sizeof(srslte_ra_ul_grant_t));
-          memcpy(&cur_grant, grant, sizeof(Tgrant));
+          //memcpy(&cur_grant, grant, sizeof(Tgrant));
           action->tx_enabled = true;
           action->rnti = grant->rnti;
         } else if ((!(grant->rnti_type == SRSLTE_RNTI_TEMP) && grant->ndi[0] != get_ndi() && harq_feedback) ||

srsue/src/upper/nas.cc

@@ -250,7 +250,6 @@ bool nas::rrc_connect() {
     }
   } else {
     nas_log->error("Could not establish RRC connection\n");
-    pool->deallocate(dedicatedInfoNAS);
   }
   return false;
 }

srsue/src/upper/rrc.cc

@@ -526,6 +526,12 @@ bool rrc::connection_request(LIBLTE_RRC_CON_REQ_EST_CAUSE_ENUM cause,
     }
   }
 
+  if (!ret) {
+    rrc_log->warning("Could not estblish connection. Deallocating dedicatedInfoNAS PDU\n");
+    pool->deallocate(this->dedicatedInfoNAS);
+    this->dedicatedInfoNAS = NULL;
+  }
+
   pthread_mutex_unlock(&mutex);
   return ret;
 }