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Starting to decode initial context setup response.

This commit is contained in:
Pedro Alvarez 2017-12-01 14:58:01 +00:00
parent 47576aced1
commit 0a36f00d2e
3 changed files with 52 additions and 2 deletions
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2
srsepc/hdr/mme/s1ap.h
View File

@ -85,6 +85,8 @@ public:
bool handle_successful_outcome(LIBLTE_S1AP_SUCCESSFULOUTCOME_STRUCT *msg);
bool handle_initial_context_setup_response(LIBLTE_S1AP_MESSAGE_INITIALCONTEXTSETUPRESPONSE_STRUCT *in_ctxt_resp);
bool handle_nas_attach_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, ue_ctx_t *ue_ctx);
void print_enb_ctx_info(const enb_ctx_t &enb_ctx);
private:

50
srsepc/src/mme/s1ap.cc
View File

@ -460,6 +460,11 @@ s1ap::handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRANSPORT_STRUCT
handle_nas_security_mode_complete(nas_msg, reply_msg, ue_ctx);
return true; //no need for reply. FIXME this should be better structured...
break;
case LIBLTE_MME_MSG_TYPE_ATTACH_COMPLETE:
m_s1ap_log->info("UL NAS: Received Attach Complete\n");
handle_nas_attach_complete(nas_msg, reply_msg, ue_ctx);
return true; //no need for reply. FIXME this should be better structured...
break;
default:
m_s1ap_log->info("Unhandled NAS message");
return false; //FIXME (nas_msg deallocate needs to be called)
@ -559,6 +564,14 @@ s1ap::handle_nas_security_mode_complete(srslte::byte_buffer_t *nas_msg, srslte::
return true;
}
bool
s1ap::handle_nas_attach_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, ue_ctx_t *ue_ctx)
{
return true;
}
bool
s1ap::send_initial_context_setup_request(uint32_t mme_ue_s1ap_id, struct srslte::gtpc_create_session_response *cs_resp)
{
@ -671,7 +684,42 @@ s1ap::send_initial_context_setup_request(uint32_t mme_ue_s1ap_id, struct srslte:
bool
s1ap::handle_initial_context_setup_response(LIBLTE_S1AP_MESSAGE_INITIALCONTEXTSETUPRESPONSE_STRUCT *in_ctxt_resp)
{
return true;
/*typedef struct{
bool ext;
LIBLTE_S1AP_MME_UE_S1AP_ID_STRUCT MME_UE_S1AP_ID;
LIBLTE_S1AP_ENB_UE_S1AP_ID_STRUCT eNB_UE_S1AP_ID;
LIBLTE_S1AP_E_RABSETUPLISTCTXTSURES_STRUCT E_RABSetupListCtxtSURes;
LIBLTE_S1AP_E_RABLIST_STRUCT E_RABFailedToSetupListCtxtSURes;
bool E_RABFailedToSetupListCtxtSURes_present;
LIBLTE_S1AP_CRITICALITYDIAGNOSTICS_STRUCT CriticalityDiagnostics;
bool CriticalityDiagnostics_present;
}LIBLTE_S1AP_MESSAGE_INITIALCONTEXTSETUPRESPONSE_STRUCT;
typedef struct{
uint32_t len;
LIBLTE_S1AP_E_RABSETUPITEMCTXTSURES_STRUCT buffer[32]; //WARNING: Artificial limit to reduce memory footprint
}LIBLTE_S1AP_E_RABSETUPLISTCTXTSURES_STRUCT;
typedef struct{
bool ext;
LIBLTE_S1AP_E_RAB_ID_STRUCT e_RAB_ID;
LIBLTE_S1AP_TRANSPORTLAYERADDRESS_STRUCT transportLayerAddress;
LIBLTE_S1AP_GTP_TEID_STRUCT gTP_TEID;
LIBLTE_S1AP_PROTOCOLEXTENSIONCONTAINER_STRUCT iE_Extensions;
bool iE_Extensions_present;
}LIBLTE_S1AP_E_RABSETUPITEMCTXTSURES_STRUCT;
*/
erabs_it = m_active_erabs.find(in_ctxt_resp->MME_UE_S1AP_ID.MME_UE_S1AP_ID);
if (erabs_it == m_active_erabs.end())
{
m_s1ap_log->error("Could not find UE's in UE active bearers map\n");
return false;
}
else{
for(int i; i<E_RABSetupListCtxtSURes;i++)
{
erabs_it->second.insert(std::pair<>());
}
}
return true;
}

2
srsepc/src/mme/s1ap_nas_transport.cc
View File

@ -220,7 +220,7 @@ s1ap_nas_transport::unpack_authentication_response(LIBLTE_S1AP_MESSAGE_UPLINKNAS
liblte_mme_parse_msg_header((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &pd, &msg_type);
if(msg_type!=LIBLTE_MME_MSG_TYPE_AUTHENTICATION_RESPONSE){
m_s1ap_log->error("Unhandled NAS message within UL NAS Transport message\n");
m_s1ap_log->error("Error unpacking NAS authentication response\n");
return false;
}