e2ap: add e2 setup response processing, add RANfunction storage functionality.

srsgnb/hdr/stack/ric/e2ap.h

@@ -22,6 +22,18 @@
 using namespace asn1::e2ap;
 using namespace asn1::e2sm_kpm;
 
+typedef struct {
+  uint16_t ric_id;
+  uint16_t plmn_id;
+} global_ric_id_t;
+
+typedef struct {
+  e2node_component_interface_type_e interface_type;
+  std::string                       amf_name;
+  std::string                       request_part;
+  std::string                       response_part;
+} e2_node_component_t;
+
 class e2ap
 {
 public:
@@ -43,6 +55,8 @@ private:
   int                   setup_procedure_transaction_id = 0;
   uint64_t              plmn_id                        = 3617847;
   uint64_t              gnb_id                         = 381210353;
+  global_ric_id_t                             global_ric_id                  = {};
+  std::map<uint32_t, RANfunction_description> ran_functions;
 };
 
 #endif /* RIC_E2AP_H */

srsgnb/hdr/stack/ric/e2sm_kpm.h

@@ -17,11 +17,20 @@
 #ifndef RIC_E2SM_KPM_H
 #define RIC_E2SM_KPM_H
 
+struct RANfunction_description {
+  bool        accepted = false;
+  std::string function_desc;
+  std::string function_shortname;
+  std::string function_e2_sm_oid;
+  int         function_instance;
+};
+
 class e2sm_kpm
 {
 public:
   e2sm_kpm(srslog::basic_logger& logger_);
-  bool generate_ran_function_description(srsran::unique_byte_buffer_t& buf);
+  bool
+  generate_ran_function_description(int function_id, RANfunction_description desc, srsran::unique_byte_buffer_t& buf);
   bool process_ric_action_definition();
   bool generate_indication_header();
   bool generate_indication_message();

srsgnb/src/stack/ric/e2ap.cc

@@ -27,11 +27,19 @@ e2_ap_pdu_c e2ap::generate_setup_request()
   asn1::protocol_ie_single_container_s<ra_nfunction_item_ies_o> item;
   item.load_info_obj(ASN1_E2AP_ID_RA_NFUNCTION_ITEM);
   item.value().ra_nfunction_item().ran_function_id       = 0;
+  item.value().ra_nfunction_item().ran_function_revision = 1;
 
   // pack E2SM-KPM-PDU into ran function definition
+  // add function to map
+  RANfunction_description add_func;
+  add_func.function_desc                                          = "KPM monitor";
+  add_func.function_shortname                                     = "ORAN-E2SM-KPM";
+  add_func.function_instance                                      = 0;
+  ran_functions[item.value().ra_nfunction_item().ran_function_id] = add_func;
+
   auto&                        ran_func_def = item.value().ra_nfunction_item().ran_function_definition;
   srsran::unique_byte_buffer_t buf          = srsran::make_byte_buffer();
-  e2sm_.generate_ran_function_description(buf);
+  e2sm_.generate_ran_function_description(item.value().ra_nfunction_item().ran_function_id, add_func, buf);
   ran_func_def.resize(buf->N_bytes);
   std::copy(buf->msg, buf->msg + buf->N_bytes, ran_func_def.data());
 
@@ -71,10 +79,29 @@ e2_ap_pdu_c e2ap::generate_subscription_response()
   action_admit_list[0].value().ri_caction_admitted_item().ric_action_id = 1;
   return pdu;
 }
+
 int e2ap::process_setup_response(e2setup_resp_s setup_response)
 {
   setup_response_received = true;
-  // TODO process setup response
+  if (setup_procedure_transaction_id == setup_response->transaction_id.value.value) {
+    setup_procedure_transaction_id++;
+  } else {
+    logger.error("Received setup response with wrong transaction id");
+  }
+  global_ric_id.plmn_id = setup_response->global_ric_id.value.plmn_id.to_number();
+  global_ric_id.ric_id  = setup_response->global_ric_id.value.ric_id.to_number();
+
+  if (setup_response->ra_nfunctions_accepted_present) {
+    for (int i = 0; i < (int)setup_response->ra_nfunctions_accepted.value.size(); i++) {
+      uint32_t ran_func_id = setup_response->ra_nfunctions_accepted.value[i]->ra_nfunction_id_item().ran_function_id;
+      if (ran_functions.find(ran_func_id) == ran_functions.end()) {
+        logger.error("Received setup response with unknown ran function id %d", ran_func_id);
+      } else {
+        logger.info("Received setup response with ran function id %d", ran_func_id);
+        ran_functions[ran_func_id].accepted = true;
+      }
+    }
+  }
   return 0;
 }
 

srsgnb/src/stack/ric/e2sm_kpm.cc

@@ -2,15 +2,17 @@
 
 e2sm_kpm::e2sm_kpm(srslog::basic_logger& logger_) : logger(logger_) {}
 
-bool e2sm_kpm::generate_ran_function_description(srsran::unique_byte_buffer_t& buf)
+bool e2sm_kpm::generate_ran_function_description(int                           function_id,
+                                                 RANfunction_description       desc,
+                                                 srsran::unique_byte_buffer_t& buf)
 {
   using namespace asn1::e2sm_kpm;
   e2_sm_kpm_ra_nfunction_description_s e2sm_kpm_ra_nfunction_description;
   e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_instance_present = true;
-  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_instance         = 0;
+  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_instance         = desc.function_instance;
-  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_short_name.from_string("ORAN-E2SM-KPM");
+  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_short_name.from_string(desc.function_shortname);
-  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_e2_sm_oid.from_string("OID123");
+  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_e2_sm_oid.from_string(desc.function_e2_sm_oid);
-  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_description.from_string("KPM monitor");
+  e2sm_kpm_ra_nfunction_description.ran_function_name.ran_function_description.from_string(desc.function_desc);
 
   e2sm_kpm_ra_nfunction_description.e2_sm_kpm_ra_nfunction_item.ric_event_trigger_style_list.resize(1);
   auto& ric_event_trigger_style_list_item =