do a loop in rrc::tti_clock() to process all pending events

srsenb/src/stack/rrc/rrc.cc

@@ -960,11 +960,9 @@ void rrc::enable_encryption(uint16_t rnti, uint32_t lcid)
 
 void rrc::tti_clock()
 {
-  // pop cmd from queue
+  // pop cmds from queue
   rrc_pdu p;
-  if (not rx_pdu_queue.try_pop(&p)) {
-    return;
-  }
+  while (rx_pdu_queue.try_pop(&p)) {
     // print Rx PDU
     if (p.pdu != nullptr) {
       rrc_log->info_hex(p.pdu->msg, p.pdu->N_bytes, "Rx %s PDU", rb_id_text[p.lcid]);
@@ -974,7 +972,7 @@ void rrc::tti_clock()
     auto user_it = users.find(p.rnti);
     if (user_it == users.end()) {
       rrc_log->warning("Discarding PDU for removed rnti=0x%x\n", p.rnti);
-    return;
+      continue;
     }
 
     // handle queue cmd
@@ -1006,6 +1004,7 @@ void rrc::tti_clock()
         break;
     }
   }
+}
 
 /*******************************************************************************
   UE class