Added support for enb agent MAC scheduler hot-plugging. Deactivated...

Added support for enb agent MAC scheduler hot-plugging. Deactivated schedule_ue_spec and added agent UE specific DL scheduler

cmake_targets/CMakeLists.txt

@@ -1007,6 +1007,7 @@ set (MAC_SRC
   ${MAC_DIR}/eNB_scheduler_RA.c
   ${MAC_DIR}/pre_processor.c
   ${MAC_DIR}/config.c
+  ${MAC_DIR}/eNB_agent_scheduler_dlsch_ue.c
   )
 
 set (ENB_APP_SRC

openair2/ENB_APP/enb_agent.c

@@ -257,6 +257,12 @@ int enb_agent_start(mid_t mod_id, const Enb_properties_array_t* enb_properties){
   
   new_thread(receive_thread, &enb_agent[mod_id]);
 
+  /*Initialize and register the mac xface. Must be modified later
+   *for more flexibility in agent management */
+
+  AGENT_MAC_xface *mac_agent_xface = (AGENT_MAC_xface *) malloc(sizeof(AGENT_MAC_xface));
+  enb_agent_register_mac_xface(mod_id, mac_agent_xface);
+  
   /* 
    * initilize a timer 
    */ 

openair2/ENB_APP/enb_agent_extern.h

@@ -44,7 +44,7 @@
 
 //extern msg_context_t shared_ctxt[NUM_MAX_ENB][ENB_AGENT_MAX];
 
-extern AGENT_MAC_xface *agent_mac_xface[NUM_MAX_ENB][ENB_AGENT_MAX];
+extern AGENT_MAC_xface *agent_mac_xface[NUM_MAX_ENB];
 
 extern unsigned int mac_agent_registered[NUM_MAX_ENB];
 

openair2/ENB_APP/enb_agent_mac.c

@@ -39,6 +39,8 @@
 #include "enb_agent_common.h"
 #include "enb_agent_mac_internal.h"
 
+#include "LAYER2/MAC/proto.h"
+
 #include "log.h"
 
 
@@ -1158,6 +1160,7 @@ int enb_agent_register_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
   xface->enb_agent_send_sr_info = enb_agent_send_sr_info;
   xface->enb_agent_send_sf_trigger = enb_agent_send_sf_trigger;
   xface->enb_agent_send_update_mac_stats = enb_agent_send_update_mac_stats;
+  xface->enb_agent_schedule_ue_spec = schedule_ue_spec_default;
 
   
   mac_agent_registered[mod_id] = 1;
@@ -1172,6 +1175,7 @@ int enb_agent_unregister_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
   xface->enb_agent_send_sr_info = NULL;
   xface->enb_agent_send_sf_trigger = NULL;
   xface->enb_agent_send_update_mac_stats = NULL;
+  xface->enb_agent_schedule_ue_spec = NULL;
 
   mac_agent_registered[mod_id] = 0;
   agent_mac_xface[mod_id] = NULL;

openair2/ENB_APP/enb_agent_mac_defs.h

@@ -54,6 +54,13 @@ typedef struct {
   /// based on the stats request configuration
   void (*enb_agent_send_update_mac_stats)(mid_t mod_id);
 
+  /// Run the UE DL scheduler and fill the Protocol__ProgranMessage. Assumes that
+  /// dl_info is already initialized as prp_dl_mac_config and fills the
+  /// prp_dl_data part of it
+  void (*enb_agent_schedule_ue_spec)(mid_t mod_id, uint32_t frame, uint32_t subframe,
+				     unsigned int *nb_rb_used, unsigned int *nCCE_used,
+				     int *mbsfn_flag, Protocol__ProgranMessage *dl_info);
+
   /*TODO: Fill in with the rest of the MAC layer technology specific callbacks (UL/DL scheduling, RACH info etc)*/
 
 } AGENT_MAC_xface;

openair2/LAYER2/MAC/proto.h

@@ -35,6 +35,11 @@
  */
 #ifndef __LAYER2_MAC_PROTO_H__
 #define __LAYER2_MAC_PROTO_H__
+
+#include "enb_agent_defs.h"
+#include "header.pb-c.h"
+#include "progran.pb-c.h"
+
 /** \addtogroup _mac
  *  @{
  */
@@ -139,6 +144,11 @@ void fill_DLSCH_dci(module_id_t module_idP,frame_t frameP,sub_frame_t subframe,u
 */
 void schedule_ue_spec(module_id_t module_idP,frame_t frameP,sub_frame_t subframe,unsigned int *nb_rb_used0,unsigned int *nCCE_used,int *mbsfn_flag);
 
+//To be used by the agent
+void schedule_ue_spec_default(mid_t mod_id, uint32_t frame, uint32_t subframe,
+				     unsigned int *nb_rb_used, unsigned int *nCCE_used,
+				     int *mbsfn_flag, Protocol__ProgranMessage *dl_info);
+
 /** \brief Function for UE/PHY to compute PUSCH transmit power in power-control procedure.
     @param Mod_id Module id of UE
     @returns Po_NOMINAL_PUSCH (PREAMBLE_RECEIVED_TARGET_POWER+DELTA_PREAMBLE