Configure complete PDCP in lte-(ue)softmodem

* Instead of partly initializing in read_config_and_init(), everything of
  PDCP is initialized in main() of lte-softmodem
* Omit RC.rrc access in RRU through checking of RC.nb_inst > 0
* Includes FlexRAN, i.e. do not start FlexRAN in RRU
* Function pointers to PDCP functions have to be set explicitly (avoid
  confusion of multiply setting function pointers)

openair2/ENB_APP/enb_config.c

@@ -2569,12 +2569,4 @@ void read_config_and_init(void) {
     memset((void *)RC.rrc[enb_id], 0, sizeof(eNB_RRC_INST));
     RCconfig_RRC(enb_id, RC.rrc[enb_id],macrlc_has_f1[enb_id]);
   }
-
-  if (!NODE_IS_DU(RC.rrc[0]->node_type)) {
-    pdcp_layer_init();
-
-    if ( NODE_IS_CU(RC.rrc[0]->node_type) ) {
-      pdcp_set_rlc_funcptr((send_rlc_data_req_func_t)proto_agent_send_rlc_data_req, (pdcp_data_ind_func_t)proto_agent_send_pdcp_data_ind);
-    }
-  }
 }

openair2/LAYER2/PDCP_v10.1.0/pdcp.c

@@ -2175,9 +2175,6 @@ uint64_t pdcp_module_init( uint64_t pdcp_optmask ) {
       netlink_init();
     }
   }
-
-  /* default interface with rlc (will be modified if CU) */
-  pdcp_set_rlc_funcptr((send_rlc_data_req_func_t)rlc_data_req, (pdcp_data_ind_func_t) pdcp_data_ind);
   return pdcp_params.optmask ;
 }
 

openair2/LAYER2/RLC/rlc.c

@@ -52,10 +52,6 @@ extern boolean_t pdcp_data_ind(
 //#define TRACE_RLC_PAYLOAD 1
 #define DEBUG_RLC_DATA_REQ 1
 
-
-
-#include "proto_agent.h"
-
 //-----------------------------------------------------------------------------
 void rlc_util_print_hex_octets(comp_name_t componentP, unsigned char *dataP, const signed long sizeP)
 //-----------------------------------------------------------------------------