Make separate header for nr_pdcp instead of using 4G pdcp

Creates function that have nr_pdcp_ prepended to their name, and change
the signature of some functions for the 5G PDCP:

- nr_pdcp_layer_init()
- nr_pdcp_data_req()
- nr_pdcp_remove_UE()
- nr_pdcp_config_set_security()
- nr_pdcp_remove_UE()
- Make separate functions for nr_pdcp_data_req_srb/drb()

executables/lte-softmodem.c

@@ -181,6 +181,21 @@ bool sdap_data_req(protocol_ctxt_t *ctxt_p,
   abort();
 }
 
+/* hack: gtp_itf.cpp requires this empty function to be defined here */
+bool nr_pdcp_data_req_drb(protocol_ctxt_t *ctxt_pP,
+                          const srb_flag_t srb_flagP,
+                          const rb_id_t rb_id,
+                          const mui_t muiP,
+                          const confirm_t confirmP,
+                          const sdu_size_t sdu_buffer_size,
+                          unsigned char *const sdu_buffer,
+                          const pdcp_transmission_mode_t mode,
+                          const uint32_t *const sourceL2Id,
+                          const uint32_t *const destinationL2Id)
+{
+  abort();
+}
+
 /* forward declarations */
 void set_default_frame_parms(LTE_DL_FRAME_PARMS *frame_parms[MAX_NUM_CCs]);
 

executables/nr-cuup.c

@@ -28,7 +28,7 @@
 #include "nfapi/oai_integration/vendor_ext.h"
 #include "openair2/F1AP/f1ap_common.h"
 #include "openair2/GNB_APP/gnb_config.h"
-#include "pdcp.h"
+#include "nr_pdcp/nr_pdcp_oai_api.h"
 
 RAN_CONTEXT_t RC;
 THREAD_STRUCT thread_struct;
@@ -147,7 +147,7 @@ int main(int argc, char **argv)
   AssertFatal(rc >= 0, "Create task for GTPV1U failed\n");
   rc = itti_create_task(TASK_CUUP_E1, E1AP_CUUP_task, NULL);
   AssertFatal(rc >= 0, "Create task for CUUP E1 failed\n");
-  pdcp_layer_init();
+  nr_pdcp_layer_init();
   MessageDef *msg = RCconfig_NR_CU_E1(true);
   AssertFatal(msg != NULL, "Send init to task for E1AP UP failed\n");
   itti_send_msg_to_task(TASK_CUUP_E1, 0, msg);

executables/nr-softmodem.c

@@ -59,7 +59,7 @@ unsigned short config_frames[4] = {2,9,11,13};
 #include "common/utils/LOG/log.h"
 #include "common/utils/LOG/vcd_signal_dumper.h"
 #include "UTIL/OPT/opt.h"
-#include "pdcp.h"
+#include "LAYER2/nr_pdcp/nr_pdcp_oai_api.h"
 
 #include "intertask_interface.h"
 
@@ -556,13 +556,8 @@ void init_pdcp(void) {
     PDCP_USE_NETLINK_BIT | LINK_ENB_PDCP_TO_IP_DRIVER_BIT | ENB_NAS_USE_TUN_BIT | SOFTMODEM_NOKRNMOD_BIT:
     LINK_ENB_PDCP_TO_GTPV1U_BIT;
   
-  if (!get_softmodem_params()->nsa) {
-    if (!NODE_IS_DU(get_node_type())) {
-      pdcp_layer_init();
-      nr_pdcp_module_init(pdcp_initmask, 0);
-    }
-  } else {
-    pdcp_layer_init();
+  if (!NODE_IS_DU(get_node_type())) {
+    nr_pdcp_layer_init();
     nr_pdcp_module_init(pdcp_initmask, 0);
   }
 }

executables/nr-ue.c

@@ -33,7 +33,7 @@
 #include "executables/softmodem-common.h"
 #include "PHY/NR_REFSIG/refsig_defs_ue.h"
 #include "radio/COMMON/common_lib.h"
-#include "pdcp.h"
+#include "LAYER2/nr_pdcp/nr_pdcp_oai_api.h"
 
 /*
  *  NR SLOT PROCESSING SEQUENCE
@@ -359,7 +359,7 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg)
       NR_UE_MAC_INST_t *mac = get_mac_inst(0);
       protocol_ctxt_t ctxt;
       PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, 0, ENB_FLAG_NO, mac->crnti, frame, slot, 0);
-      pdcp_run(&ctxt);
+      nr_pdcp_run(&ctxt);
     }
     process_queued_nr_nfapi_msgs(mac, sfn_slot);
   }
@@ -627,7 +627,7 @@ void UE_processing(nr_rxtx_thread_data_t *rxtxD) {
       NR_UE_MAC_INST_t *mac = get_mac_inst(0);
       protocol_ctxt_t ctxt;
       PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, UE->Mod_id, ENB_FLAG_NO, mac->crnti, proc->frame_rx, proc->nr_slot_rx, 0);
-      pdcp_run(&ctxt);
+      nr_pdcp_run(&ctxt);
     }
   }
 

executables/nr-uesoftmodem.c

@@ -59,7 +59,7 @@ unsigned short config_frames[4] = {2,9,11,13};
 
 #include "UTIL/OPT/opt.h"
 #include "enb_config.h"
-#include "pdcp.h"
+#include "LAYER2/nr_pdcp/nr_pdcp_oai_api.h"
 
 #include "intertask_interface.h"
 
@@ -386,7 +386,7 @@ static void init_pdcp(int ue_id) {
   if (get_softmodem_params()->nsa && rlc_module_init(0) != 0) {
     LOG_I(RLC, "Problem at RLC initiation \n");
   }
-  pdcp_layer_init();
+  nr_pdcp_layer_init();
   nr_pdcp_module_init(pdcp_initmask, ue_id);
   pdcp_set_rlc_data_req_func((send_rlc_data_req_func_t) rlc_data_req);
   pdcp_set_pdcp_data_ind_func((pdcp_data_ind_func_t) pdcp_data_ind);