Added support for control delegation and dynamic loading of libraries

cmake_targets/CMakeLists.txt

@@ -796,6 +796,7 @@ if (ENB_AGENT_SB_IF)
     ${PRPT_MSG_DIR}/mac_primitives.proto
     ${PRPT_MSG_DIR}/config_messages.proto
     ${PRPT_MSG_DIR}/config_common.proto
+    ${PRPT_MSG_DIR}/control_delegation.proto
     )
 
   set(PRPT_C_DIR ${protobuf_generated_dir}/${PRPTDIR})
@@ -812,6 +813,7 @@ if (ENB_AGENT_SB_IF)
     ${PRPT_C_DIR}/mac_primitives.pb-c.c
     ${PRPT_C_DIR}/config_messages.pb-c.c
     ${PRPT_C_DIR}/config_common.pb-c.c
+    ${PRPT_C_DIR}/control_delegation.pb-c.c
     )
   
   file(GLOB prpt_h ${PRPT_C_DIR}/*.h)
@@ -1109,6 +1111,9 @@ add_library(L2
   ${ENB_APP_SRC}
   ${OPENAIR2_DIR}/RRC/L2_INTERFACE/openair_rrc_L2_interface.c)
 
+#Test for adding a shared library
+add_library(alt_sched SHARED ${MAC_DIR}/eNB_agent_scheduler_dlsch_ue_alt.c)
+
 # L3 Libs
 ##########################
 
@@ -1604,7 +1609,7 @@ target_link_libraries (lte-softmodem
 
 
 target_link_libraries (lte-softmodem ${LIBXML2_LIBRARIES})
-target_link_libraries (lte-softmodem pthread m ${CONFIG_LIBRARIES} rt crypt ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES} sctp ${option_HW_lib} ${option_TP_lib} ${XFORMS_LIBRARIES} ${PROTOBUF_LIB})
+target_link_libraries (lte-softmodem pthread m ${CONFIG_LIBRARIES} rt crypt ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES} sctp ${option_HW_lib} ${option_TP_lib} ${XFORMS_LIBRARIES} ${PROTOBUF_LIB}  ${CMAKE_DL_LIBS})
 target_link_libraries (lte-softmodem ${LIBBOOST_LIBRARIES})
 target_link_libraries (lte-softmodem ${LIB_LMS_LIBRARIES})
 
@@ -1638,7 +1643,7 @@ target_link_libraries (lte-softmodem-nos1
   -Wl,--end-group )
 
 target_link_libraries (lte-softmodem-nos1 ${LIBXML2_LIBRARIES})
-target_link_libraries (lte-softmodem-nos1 pthread m ${CONFIG_LIBRARIES} rt crypt ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES}  ${option_HW_lib} ${option_TP_lib} ${XFORMS_LIBRARIES} ${PROTOBUF_LIB})
+target_link_libraries (lte-softmodem-nos1 pthread m ${CONFIG_LIBRARIES} rt crypt ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES}  ${option_HW_lib} ${option_TP_lib} ${XFORMS_LIBRARIES} ${PROTOBUF_LIB} ${CMAKE_DL_LIBS})
 target_link_libraries (lte-softmodem-nos1 ${LIBBOOST_LIBRARIES})
 target_link_libraries (lte-softmodem-nos1  ${LIB_LMS_LIBRARIES})
 
@@ -1770,12 +1775,12 @@ add_executable(oaisim_nos1
 target_include_directories(oaisim_nos1 PUBLIC  ${OPENAIR_TARGETS}/SIMU/USER)
 target_link_libraries (oaisim_nos1
   -Wl,--start-group
-  RRC_LIB X2AP_LIB SECU_CN UTIL HASHTABLE SCHED_LIB PHY LFDS ${MSC_LIB} L2 ${RAL_LIB} SIMU SIMU_ETH SECU_OSA ${ITTI_LIB}  ${MIH_LIB} ${PRPT_MSG_LIB} ${ASYNC_IF_LIB} ${ENB_AGENT_LIB} 
+  RRC_LIB X2AP_LIB SECU_CN UTIL HASHTABLE SCHED_LIB PHY LFDS ${MSC_LIB} L2 ${RAL_LIB} SIMU SIMU_ETH SECU_OSA ${ITTI_LIB}  ${MIH_LIB} ${PRPT_MSG_LIB} ${ASYNC_IF_LIB} ${ENB_AGENT_LIB}
   -Wl,--end-group )
 
 target_link_libraries (oaisim_nos1 ${LIBXML2_LIBRARIES} ${LAPACK_LIBRARIES})
 target_link_libraries (oaisim_nos1 pthread m ${CONFIG_LIBRARIES} rt crypt ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES}  ${NETTLE_LIBRARIES}  ${option_HW_lib} ${option_TP_lib}
-  ${ATLAS_LIBRARIES} ${XFORMS_LIBRARIES} ${OPENPGM_LIBRARIES} ${PROTOBUF_LIB})
+  ${ATLAS_LIBRARIES} ${XFORMS_LIBRARIES} ${OPENPGM_LIBRARIES} ${PROTOBUF_LIB} ${CMAKE_DL_LIBS})
 #Force link with forms, regardless XFORMS option
 target_link_libraries (oaisim_nos1 forms)
 

openair2/ENB_APP/MESSAGES/V2/control_delegation.proto

@@ -0,0 +1,6 @@
+//'syntax = "proto2";'
+package protocol;
+
+enum prp_control_delegation_type {
+     PRCDT_MAC_DL_UE_SCHEDULER = 1;		// DL UE scheduler delegation
+}

openair2/ENB_APP/MESSAGES/V2/header.proto

@@ -35,5 +35,8 @@ enum prp_type {
 
      // UE state change messages
      PRPT_UE_STATE_CHANGE = 14;
+
+     // Control delegation messages
+     PRPT_DELEGATE_CONTROL = 15;
 }
 

openair2/ENB_APP/MESSAGES/V2/progran.proto

@@ -6,6 +6,7 @@ import "header.proto";
 import "time_common.proto";
 import "config_messages.proto";
 import "controller_commands.proto";
+import "control_delegation.proto";
 
 message progran_message {
        optional progran_direction msg_dir = 100;
@@ -25,6 +26,7 @@ message progran_message {
 	      prp_lc_config_reply lc_config_reply_msg = 13;
 	      prp_dl_mac_config dl_mac_config_msg = 14;
 	      prp_ue_state_change ue_state_change_msg = 15;
+	      prp_control_delegation control_delegation_msg = 16;
 	}
 }
 
@@ -170,6 +172,17 @@ message prp_ue_state_change {
 	optional prp_ue_config config = 3;	// Body of the message (based on type)
 }
 
+//
+// Control delegation message
+//
+
+message prp_control_delegation {
+	optional prp_header header = 1;
+	optional uint32 delegation_type = 2;	// Bitmap of PRCDT_* flags
+	optional bytes payload = 3;	  	// Byte array of shared lib containing the delegated functions
+	repeated string name = 4;		// The delegated functions names ordered based on bitmap flags
+}
+
 // Extensions of the echo request and reply
 // messages for carrying a latency value in ms
 message prp_echo_request_latency {