Deleted unused functions

srsepc/hdr/mme/s1ap.h

@@ -69,10 +69,6 @@ public:
   bool handle_s1ap_rx_pdu(srslte::byte_buffer_t *pdu, struct sctp_sndrcvinfo *enb_sri);
   bool handle_initiating_message(LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT *msg, struct sctp_sndrcvinfo *enb_sri);
 
-  bool handle_s1_setup_request(LIBLTE_S1AP_MESSAGE_S1SETUPREQUEST_STRUCT *msg, struct sctp_sndrcvinfo *enb_sri);
-  bool send_s1_setup_failure(struct sctp_sndrcvinfo *enb_sri);
-  bool send_s1_setup_response(struct sctp_sndrcvinfo *enb_sri);
-
   bool handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *init_ue, struct sctp_sndrcvinfo *enb_sri);
   bool handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRANSPORT_STRUCT *ul_xport, struct sctp_sndrcvinfo *enb_sri);
   bool handle_ue_context_release_request(LIBLTE_S1AP_MESSAGE_UECONTEXTRELEASEREQUEST_STRUCT *ue_rel, struct sctp_sndrcvinfo *enb_sri);

srsepc/src/mme/s1ap.cc

@@ -303,113 +303,6 @@ s1ap::handle_successful_outcome(LIBLTE_S1AP_SUCCESSFULOUTCOME_STRUCT *msg)
   return true;
 }
 
-bool 
-s1ap::handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *init_ue, struct sctp_sndrcvinfo *enb_sri)
-{
-  LIBLTE_MME_ATTACH_REQUEST_MSG_STRUCT attach_req;
-  LIBLTE_MME_PDN_CONNECTIVITY_REQUEST_MSG_STRUCT pdn_con_req;
-
-  uint64_t    imsi;
-  uint8_t     k_asme[32];
-  uint8_t     autn[16]; 
-  uint8_t     rand[6];
-  uint8_t     xres[8];
-
-  ue_ctx_t ue_ctx;
-
- /*Get info from initial UE message*/ 
-  ue_ctx.enb_ue_s1ap_id = init_ue->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID;
-  m_s1ap_log->console("Received Initial UE Message. eNB-UE S1AP Id: %d\n", ue_ctx.enb_ue_s1ap_id);
-  m_s1ap_log->info("Received Initial UE Message. eNB-UE S1AP Id: %d\n", ue_ctx.enb_ue_s1ap_id);
-
-  /*Log unhandled Initial UE message IEs*/
-  m_s1ap_nas_transport->log_unhandled_initial_ue_message_ies(init_ue);
-
-  /*Get NAS Attach Request and PDN connectivity request messages*/
-  if(!m_s1ap_nas_transport->unpack_initial_ue_message(init_ue, &attach_req,&pdn_con_req))
-  {
-    //Could not decode the attach request and the PDN connectivity request.
-    m_s1ap_log->error("Could not unpack NAS Attach Request and PDN connectivity request.\n");
-    return false;
-  }
-
-  //Get IMSI
-  imsi = 0;
-  for(int i=0;i<=14;i++){
-    imsi  += attach_req.eps_mobile_id.imsi[i]*std::pow(10,14-i);
-  }
-  m_s1ap_log->console("Attach request from IMSI: %015lu\n", imsi);
-  m_s1ap_log->info("Attach request from IMSI: %015lu\n", imsi);  
-
-  //Get UE network capabilities
-  memcpy(&ue_ctx.ue_network_cap, &attach_req.ue_network_cap, sizeof(LIBLTE_MME_UE_NETWORK_CAPABILITY_STRUCT));
-  ue_ctx.ms_network_cap_present =  attach_req.ms_network_cap_present;
-  if(attach_req.ms_network_cap_present)
-  {
-    memcpy(&ue_ctx.ms_network_cap, &attach_req.ms_network_cap, sizeof(LIBLTE_MME_MS_NETWORK_CAPABILITY_STRUCT));
-  }
-  //FIXME use this info
-  uint8_t eps_bearer_id = pdn_con_req.eps_bearer_id;             //TODO: Unused
-  ue_ctx.procedure_transaction_id = pdn_con_req.proc_transaction_id; 
-
-  //Save whether ESM information transfer is necessary
-  ue_ctx.eit = pdn_con_req.esm_info_transfer_flag_present;
-  m_s1ap_log->console("EPS Bearer id: %d\n", eps_bearer_id);
-
-  //Initialize NAS count
-  ue_ctx.security_ctxt.ul_nas_count = 0;
-  ue_ctx.security_ctxt.dl_nas_count = 0;
-  //Add eNB info to UE ctxt
-  memcpy(&ue_ctx.enb_sri, enb_sri, sizeof(struct sctp_sndrcvinfo));
-
-  //Get Authentication Vectors from HSS
-  if(!m_hss->gen_auth_info_answer(imsi, ue_ctx.security_ctxt.k_asme, autn, rand, ue_ctx.security_ctxt.xres))
-  {
-    m_s1ap_log->console("User not found. IMSI %015lu\n",imsi);
-    m_s1ap_log->info("User not found. IMSI %015lu\n",imsi);
-    return false;
-  }
-
-  //Save UE context
-  ue_ctx.imsi = imsi;
-  ue_ctx.mme_ue_s1ap_id = m_next_mme_ue_s1ap_id++; 
-  for(uint i = 0 ; i< MAX_ERABS_PER_UE; i++)
-  {
-    ue_ctx.erabs_ctx[i].state = ERAB_DEACTIVATED;
-    ue_ctx.erabs_ctx[i].erab_id = i;
-  }
-
-  ue_ctx_t *ue_ptr = new ue_ctx_t;
-  memcpy(ue_ptr,&ue_ctx,sizeof(ue_ctx));
-  m_active_ues.insert(std::pair<uint32_t,ue_ctx_t*>(ue_ptr->mme_ue_s1ap_id,ue_ptr));
- 
-  std::map<int32_t,uint16_t>::iterator it_enb = m_sctp_to_enb_id.find(enb_sri->sinfo_assoc_id);
-  uint16_t enb_id = it_enb->second;
-  std::map<uint16_t,std::set<uint32_t> >::iterator it_ue_id = m_enb_id_to_ue_ids.find(enb_id);
-  if(it_ue_id==m_enb_id_to_ue_ids.end())
-  {
-    m_s1ap_log->error("Could not find eNB's UEs\n");
-    return false;
-  }
-  it_ue_id->second.insert(ue_ptr->mme_ue_s1ap_id);
-
-  //Pack NAS Authentication Request in Downlink NAS Transport msg
-  srslte::byte_buffer_t *reply_msg = m_pool->allocate();
-  m_s1ap_nas_transport->pack_authentication_request(reply_msg, ue_ctx.enb_ue_s1ap_id, ue_ctx.mme_ue_s1ap_id, autn, rand);
-  
-  //Send Reply to eNB
-  ssize_t n_sent = sctp_send(m_s1mme,reply_msg->msg, reply_msg->N_bytes, enb_sri, 0);
-  if(n_sent == -1)
-  {
-    m_s1ap_log->error("Failed to send NAS Attach Request");
-    return false;
-  }
-  m_s1ap_log->info("DL NAS: Sent Athentication Request\n");
-  m_pool->deallocate(reply_msg);
-  //TODO Start T3460 Timer!
-  return true;
-}
-
 bool
 s1ap::handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRANSPORT_STRUCT *ul_xport, struct sctp_sndrcvinfo *enb_sri)
 {