Split init and config USRP device. It seems to have solved the stop/restart...

Split init and config USRP device. It seems to have solved the stop/restart RAU without stopping the RRU

targets/ARCH/COMMON/common_lib.c

@@ -134,6 +134,9 @@ int load_lib(openair0_device *device, openair0_config_t *openair0_cfg, eth_param
   return ret; 	       
 }
 
+int openair0_check_device_loaded(){
+	return dlopen(OAI_RF_LIBNAME, RTLD_NOLOAD);
+}
 
 
 int openair0_device_load(openair0_device *device, openair0_config_t *openair0_cfg) {

targets/ARCH/COMMON/common_lib.h

@@ -283,6 +283,10 @@ struct openair0_device_t {
   /* !brief ETH params set by application */
   eth_params_t *eth_params;
 
+  /* !brief Indicates if device already initialized */
+  int is_init;
+
+
   /*!brief Can be used by driver to hold internal structure*/
   void *priv;
 
@@ -293,6 +297,13 @@ struct openair0_device_t {
   */
   int (*trx_start_func)(openair0_device *device);
 
+ /*! \brief Called to configure the device
+      @param device pointer to the device structure specific to the RF hardware target  
+  */
+
+
+  int (*trx_config_func)(openair0_device* device, openair0_config_t *openair0_cfg);
+
   /*! \brief Called to send a request message between RAU-RRU on control port
       @param device pointer to the device structure specific to the RF hardware target
       @param msg pointer to the message structure passed between RAU-RRU

targets/RT/USER/lte-ru.c

@@ -1563,7 +1563,8 @@ static void* ru_thread_control( void* param ) {
   // Start IF device if any
   if (ru->start_if) {
     LOG_I(PHY,"Starting IF interface for RU %d\n",ru->idx);
-    AssertFatal(ru->start_if(ru,NULL) == 0, "Could not start the IF device\n");
+    AssertFatal(
+	ru->start_if(ru,NULL) 	== 0, "Could not start the IF device\n");
 
     if (ru->if_south != LOCAL_RF) wait_eNBs();
   }
@@ -1647,7 +1648,16 @@ static void* ru_thread_control( void* param ) {
 					 
 		//if (ru->is_slave == 1) lte_sync_time_init(&ru->frame_parms);
 
-		ret = openair0_device_load(&ru->rfdevice,&ru->openair0_cfg);
+		if (ru->rfdevice.is_init != 1){
+			ret = openair0_device_load(&ru->rfdevice,&ru->openair0_cfg);
+		}
+
+		
+		AssertFatal((ru->rfdevice.trx_config_func(&ru->rfdevice,&ru->openair0_cfg)==0), 
+				"Failed to configure RF device for RU %d\n",ru->idx);
+
+
+
 
 		if (setup_RU_buffers(ru)!=0) {
 		  printf("Exiting, cannot initialize RU Buffers\n");
@@ -1879,7 +1889,7 @@ static void* ru_thread( void* param ) {
       else if (ru->cmd == STOP_RU) {
 	ru->state = RU_IDLE;
 	ru->cmd   = EMPTY;
-	LOG_I(PHY,"RU %d rf device stopped\n",ru->idx);
+	LOG_I(PHY,"RU %d stopped\n",ru->idx);
 	break;
       }
       old_time = time_rf.tv_nsec;