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srsRAN_4G
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Deleting commented out and unused code.

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master
Pedro Alvarez 7 years ago
parent 074cf4526f
commit 3227bc8e66
2 changed files with 0 additions and 182 deletions
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2
srsepc/hdr/mme/s1ap_nas_transport.h
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@ -72,8 +72,6 @@ public:
bool handle_identity_response(srslte::byte_buffer_t *nas_msg, ue_ctx_t* ue_ctx, srslte::byte_buffer_t *reply_msg, bool *reply_flag);
bool handle_tracking_area_update_request(srslte::byte_buffer_t *nas_msg, ue_ctx_t* ue_ctx, srslte::byte_buffer_t *reply_msg, bool *reply_flag);
bool unpack_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *init_ue, LIBLTE_MME_ATTACH_REQUEST_MSG_STRUCT *attach_req, LIBLTE_MME_PDN_CONNECTIVITY_REQUEST_MSG_STRUCT *pdn_con_req);
bool pack_authentication_request(srslte::byte_buffer_t *reply_msg, uint32_t enb_ue_s1ap_id, uint32_t next_mme_ue_s1ap_id, uint8_t *autn,uint8_t *rand);
bool pack_authentication_reject(srslte::byte_buffer_t *reply_msg, uint32_t enb_ue_s1ap_id, uint32_t mme_ue_s1ap_id);
bool unpack_authentication_response(LIBLTE_S1AP_MESSAGE_UPLINKNASTRANSPORT_STRUCT *ul_xport, LIBLTE_MME_AUTHENTICATION_RESPONSE_MSG_STRUCT *auth_resp);

180
srsepc/src/mme/s1ap_nas_transport.cc
Unescape Escape View File

@ -113,12 +113,6 @@ s1ap_nas_transport::handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSA
m_pool->deallocate(nas_msg);
return false;
}
/* if(!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;
}*/
handle_nas_attach_request(enb_ue_s1ap_id, attach_req,pdn_con_req,reply_buffer,reply_flag, enb_sri);
}
else if(msg_type == LIBLTE_MME_SECURITY_HDR_TYPE_SERVICE_REQUEST)
@ -129,130 +123,7 @@ s1ap_nas_transport::handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSA
return false;
}
m_pool->deallocate(nas_msg);
return true;
/*
//Create basic UE Ctx
ue_ctx_t *ue_ctx_ptr = &ue_ctx;
ue_ctx.imsi = 0;
ue_ctx.mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
//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));
}
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));
//Initialize E-RABs
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;
}
//Get UE Identity
if(attach_req.eps_mobile_id.type_of_id == LIBLTE_MME_EPS_MOBILE_ID_TYPE_IMSI)
{
//IMSI style attach
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 -- IMSI-style attach request\n");
}
else if(attach_req.eps_mobile_id.type_of_id == LIBLTE_MME_EPS_MOBILE_ID_TYPE_GUTI)
{
//GUTI style attach
m_s1ap_log->console("Attach Request -- GUTI-style attach request\n");
uint32_t m_tmsi = attach_req.eps_mobile_id.guti.m_tmsi;
std::map<uint32_t,uint32_t>::iterator it = m_s1ap->m_tmsi_to_s1ap_id.find(m_tmsi);
if(it == m_s1ap->m_tmsi_to_s1ap_id.end())
{
//Could not find IMSI from M-TMSI, send Id request
m_s1ap_log->console("Attach Request -- Could not find M-TMSI=0x%x. Sending ID request\n",m_tmsi);
m_s1ap_log->info("Attach Request -- Could not find M-TMSI=0x%d. Sending Id Request\n", m_tmsi);
ue_ctx.mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
m_s1ap->add_new_ue_ctx(ue_ctx);
pack_identity_request(reply_buffer, ue_ctx.enb_ue_s1ap_id, ue_ctx.mme_ue_s1ap_id);
*reply_flag = true;
return true;
}
m_s1ap_log->console("Found M-TMSI: %d\n",m_tmsi);
ue_ctx_ptr = m_s1ap->find_ue_ctx(it->second);
if(ue_ctx_ptr!=NULL)
{
m_s1ap_log->console("Found UE context. IMSI: %015lu\n",ue_ctx_ptr->imsi);
imsi = ue_ctx_ptr->imsi;
m_mme_gtpc->send_create_session_request(ue_ctx_ptr->imsi, ue_ctx_ptr->mme_ue_s1ap_id);
*reply_flag = false; //No reply needed
return true;
}
else
{
m_s1ap_log->error("Found M-TMSI but could not find UE context\n");
return false;
}
}
m_s1ap_log->console("Attach request -- IMSI: %015lu\n", imsi);
m_s1ap_log->info("Attach request -- IMSI: %015lu\n", imsi);
m_s1ap_log->console("Attach request -- eNB-UE S1AP Id: %d, MME-UE S1AP Id: %d\n", ue_ctx_ptr->enb_ue_s1ap_id, ue_ctx_ptr->mme_ue_s1ap_id);
m_s1ap_log->console("Attach Request -- UE Network Capabilities EEA: %d%d%d%d%d%d%d%d\n",
attach_req.ue_network_cap.eea[0],
attach_req.ue_network_cap.eea[1],
attach_req.ue_network_cap.eea[2],
attach_req.ue_network_cap.eea[3],
attach_req.ue_network_cap.eea[4],
attach_req.ue_network_cap.eea[5],
attach_req.ue_network_cap.eea[6],
attach_req.ue_network_cap.eea[7]);
m_s1ap_log->console("Attach Request -- UE Network Capabilities EIA: %d%d%d%d%d%d%d%d\n",
attach_req.ue_network_cap.eia[0],
attach_req.ue_network_cap.eia[1],
attach_req.ue_network_cap.eia[2],
attach_req.ue_network_cap.eia[3],
attach_req.ue_network_cap.eia[4],
attach_req.ue_network_cap.eia[5],
attach_req.ue_network_cap.eia[6],
attach_req.ue_network_cap.eia[7]);
m_s1ap_log->console("Attach Request -- MS Network Capabilities Present: %s\n", attach_req.ms_network_cap_present ? "true" : "false");
m_s1ap_log->console("PDN Connectivity Request -- EPS Bearer Identity requested: %d\n", pdn_con_req.eps_bearer_id);
m_s1ap_log->console("PDN Connectivity Request -- Procedure Transaction Id: %d\n", pdn_con_req.proc_transaction_id);
m_s1ap_log->console("PDN Connectivity Request -- ESM Information Transfer requested: %s\n", pdn_con_req.esm_info_transfer_flag_present ? "true" : "false");
//Get Authentication Vectors from HSS
if(!m_hss->gen_auth_info_answer(imsi, ue_ctx_ptr->security_ctxt.k_asme, autn, rand, ue_ctx_ptr->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;
if(attach_req.eps_mobile_id.type_of_id == LIBLTE_MME_EPS_MOBILE_ID_TYPE_IMSI)
{
//IMSI attach requeires new UE ctxt
ue_ctx.mme_ue_s1ap_id = m_s1ap->get_next_mme_ue_s1ap_id();
m_s1ap->add_new_ue_ctx(ue_ctx);
}
//Pack NAS Authentication Request in Downlink NAS Transport msg
pack_authentication_request(reply_buffer, ue_ctx_ptr->enb_ue_s1ap_id, ue_ctx_ptr->mme_ue_s1ap_id, autn, rand);
//Send reply to eNB
*reply_flag = true;
m_s1ap_log->info("Sending Athentication Request\n");
m_s1ap_log->console("Sending Athentication Request\n");
//TODO Start T3460 Timer!
*/
return true;
}
@ -815,57 +686,6 @@ s1ap_nas_transport::handle_tracking_area_update_request(srslte::byte_buffer_t *n
/*Packing/Unpacking helper functions*/
bool
s1ap_nas_transport::unpack_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *init_ue,
LIBLTE_MME_ATTACH_REQUEST_MSG_STRUCT *attach_req,
LIBLTE_MME_PDN_CONNECTIVITY_REQUEST_MSG_STRUCT *pdn_con_req )
{
/*Get NAS Attach Request Message*/
uint8_t pd, msg_type;
srslte::byte_buffer_t *nas_msg = m_pool->allocate();
memcpy(nas_msg->msg, &init_ue->NAS_PDU.buffer, init_ue->NAS_PDU.n_octets);
nas_msg->N_bytes = init_ue->NAS_PDU.n_octets;
liblte_mme_parse_msg_header((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &pd, &msg_type);
if(msg_type!=LIBLTE_MME_MSG_TYPE_ATTACH_REQUEST){
m_s1ap_log->error("Unhandled NAS message within the Initial UE message\n");
return false;
}
LIBLTE_ERROR_ENUM err = liblte_mme_unpack_attach_request_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, attach_req);
if(err != LIBLTE_SUCCESS){
m_s1ap_log->error("Error unpacking NAS attach request. Error: %s\n", liblte_error_text[err]);
return false;
}
/*Log unhandled Attach Request IEs*/
log_unhandled_attach_request_ies(attach_req);
/*Get PDN Connectivity Request*/
err = liblte_mme_unpack_pdn_connectivity_request_msg(&attach_req->esm_msg, pdn_con_req);
if(err != LIBLTE_SUCCESS){
m_s1ap_log->error("Error unpacking NAS PDN Connectivity Request. Error: %s\n", liblte_error_text[err]);
return false;
}
if(pdn_con_req->pdn_type == LIBLTE_MME_PDN_TYPE_IPV6)
{
m_s1ap_log->error("PDN Connectivity Request: Only IPv4 connectivity supported.\n");
return false;
}
if(pdn_con_req->request_type != LIBLTE_MME_REQUEST_TYPE_INITIAL_REQUEST)
{
m_s1ap_log->error("PDN Connectivity Request: Only Initial Request supported.\n");
return false;
}
/*Log unhandled PDN connectivity request IEs*/
log_unhandled_pdn_con_request_ies(pdn_con_req);
m_pool->deallocate(nas_msg);
return true;
}
bool
s1ap_nas_transport::pack_authentication_request(srslte::byte_buffer_t *reply_msg, uint32_t enb_ue_s1ap_id, uint32_t next_mme_ue_s1ap_id, uint8_t *autn, uint8_t *rand)
{

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