add RLC suspend/resume to eNB interface

lib/include/srslte/interfaces/enb_interfaces.h

@@ -194,6 +194,8 @@ public:
   virtual void add_bearer_mrb(uint16_t rnti, uint32_t lcid)                              = 0;
   virtual void write_sdu(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t sdu) = 0;
   virtual bool has_bearer(uint16_t rnti, uint32_t lcid)                                  = 0;
+  virtual bool suspend_bearer(uint16_t rnti, uint32_t lcid)                              = 0;
+  virtual bool resume_bearer(uint16_t rnti, uint32_t lcid)                               = 0;
 };
 
 // PDCP interface for GTPU

srsenb/hdr/stack/upper/rlc.h

@@ -53,6 +53,8 @@ public:
   void add_bearer(uint16_t rnti, uint32_t lcid, srslte::rlc_config_t cnfg);
   void add_bearer_mrb(uint16_t rnti, uint32_t lcid);
   bool has_bearer(uint16_t rnti, uint32_t lcid);
+  bool suspend_bearer(uint16_t rnti, uint32_t lcid);
+  bool resume_bearer(uint16_t rnti, uint32_t lcid);
 
   // rlc_interface_pdcp
   void        write_sdu(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t sdu);

srsenb/src/stack/upper/rlc.cc

@@ -121,6 +121,30 @@ bool rlc::has_bearer(uint16_t rnti, uint32_t lcid)
   return result;
 }
 
+bool rlc::suspend_bearer(uint16_t rnti, uint32_t lcid)
+{
+  pthread_rwlock_rdlock(&rwlock);
+  bool result = false;
+  if (users.count(rnti)) {
+    users[rnti].rlc->suspend_bearer(lcid);
+    result = true;
+  }
+  pthread_rwlock_unlock(&rwlock);
+  return result;
+}
+
+bool rlc::resume_bearer(uint16_t rnti, uint32_t lcid)
+{
+  pthread_rwlock_rdlock(&rwlock);
+  bool result = false;
+  if (users.count(rnti)) {
+    users[rnti].rlc->resume_bearer(lcid);
+    result = true;
+  }
+  pthread_rwlock_unlock(&rwlock);
+  return result;
+}
+
 void rlc::read_pdu_pcch(uint8_t* payload, uint32_t buffer_size)
 {
   rrc->read_pdu_pcch(payload, buffer_size);