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srsLTE
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use original UE establishment cause in S1AP initial UE message

This commit is contained in:
Andre Puschmann 2018-06-25 18:19:57 +02:00
parent b551c82f7b
commit 064d7bd2dc
5 changed files with 16 additions and 13 deletions
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4
lib/include/srslte/interfaces/enb_interfaces.h
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@ -274,8 +274,8 @@ public:
class s1ap_interface_rrc
{
public:
virtual void initial_ue(uint16_t rnti, srslte::byte_buffer_t *pdu) = 0;
virtual void initial_ue(uint16_t rnti, srslte::byte_buffer_t *pdu, uint32_t m_tmsi, uint8_t mmec) = 0;
virtual void initial_ue(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu) = 0;
virtual void initial_ue(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu, uint32_t m_tmsi, uint8_t mmec) = 0;
virtual void write_pdu(uint16_t rnti, srslte::byte_buffer_t *pdu) = 0;
virtual bool user_exists(uint16_t rnti) = 0;
virtual bool user_release(uint16_t rnti, LIBLTE_S1AP_CAUSERADIONETWORK_ENUM cause_radio) = 0;

2
srsenb/hdr/upper/rrc.h
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@ -251,6 +251,8 @@ public:
struct timeval t_last_activity;
LIBLTE_RRC_CON_REQ_EST_CAUSE_ENUM establishment_cause;
// S-TMSI for this UE
bool has_tmsi;
uint32_t m_tmsi;

6
srsenb/hdr/upper/s1ap.h
View File

@ -72,8 +72,8 @@ public:
void run_thread();
// RRC interface
void initial_ue(uint16_t rnti, srslte::byte_buffer_t *pdu);
void initial_ue(uint16_t rnti, srslte::byte_buffer_t *pdu, uint32_t m_tmsi, uint8_t mmec);
void initial_ue(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu);
void initial_ue(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu, uint32_t m_tmsi, uint8_t mmec);
void write_pdu(uint16_t rnti, srslte::byte_buffer_t *pdu);
bool user_exists(uint16_t rnti);
bool user_release(uint16_t rnti, LIBLTE_S1AP_CAUSERADIONETWORK_ENUM cause_radio);
@ -128,7 +128,7 @@ private:
bool handle_s1setupfailure(LIBLTE_S1AP_MESSAGE_S1SETUPFAILURE_STRUCT *msg);
bool handle_erabsetuprequest(LIBLTE_S1AP_MESSAGE_E_RABSETUPREQUEST_STRUCT *msg);
bool send_initialuemessage(uint16_t rnti, srslte::byte_buffer_t *pdu, bool has_tmsi, uint32_t m_tmsi=0, uint8_t mmec=0);
bool send_initialuemessage(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu, bool has_tmsi, uint32_t m_tmsi=0, uint8_t mmec=0);
bool send_ulnastransport(uint16_t rnti, srslte::byte_buffer_t *pdu);
bool send_uectxtreleaserequest(uint16_t rnti, LIBLTE_S1AP_CAUSE_STRUCT *cause);
bool send_uectxtreleasecomplete(uint16_t rnti, uint32_t mme_ue_id, uint32_t enb_ue_id);

5
srsenb/src/upper/rrc.cc
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@ -1043,6 +1043,7 @@ void rrc::ue::handle_rrc_con_req(LIBLTE_RRC_CONNECTION_REQUEST_STRUCT *msg)
m_tmsi = msg->ue_id.s_tmsi.m_tmsi;
has_tmsi = true;
}
establishment_cause = msg->cause;
send_connection_setup();
state = RRC_STATE_WAIT_FOR_CON_SETUP_COMPLETE;
}
@ -1069,9 +1070,9 @@ void rrc::ue::handle_rrc_con_setup_complete(LIBLTE_RRC_CONNECTION_SETUP_COMPLETE
parent->mac->phy_config_enabled(rnti, true);
if(has_tmsi) {
parent->s1ap->initial_ue(rnti, pdu, m_tmsi, mmec);
parent->s1ap->initial_ue(rnti, (LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM)establishment_cause, pdu, m_tmsi, mmec);
} else {
parent->s1ap->initial_ue(rnti, pdu);
parent->s1ap->initial_ue(rnti, (LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM)establishment_cause, pdu);
}
state = RRC_STATE_WAIT_FOR_CON_RECONF_COMPLETE;
}

12
srsenb/src/upper/s1ap.cc
View File

@ -174,22 +174,22 @@ void s1ap::build_tai_cgi()
/*******************************************************************************
/* RRC interface
********************************************************************************/
void s1ap::initial_ue(uint16_t rnti, srslte::byte_buffer_t *pdu)
void s1ap::initial_ue(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu)
{
ue_ctxt_map[rnti].eNB_UE_S1AP_ID = next_eNB_UE_S1AP_ID++;
ue_ctxt_map[rnti].stream_id = 1;
ue_ctxt_map[rnti].release_requested = false;
enbid_to_rnti_map[ue_ctxt_map[rnti].eNB_UE_S1AP_ID] = rnti;
send_initialuemessage(rnti, pdu, false);
send_initialuemessage(rnti, cause, pdu, false);
}
void s1ap::initial_ue(uint16_t rnti, srslte::byte_buffer_t *pdu, uint32_t m_tmsi, uint8_t mmec)
void s1ap::initial_ue(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu, uint32_t m_tmsi, uint8_t mmec)
{
ue_ctxt_map[rnti].eNB_UE_S1AP_ID = next_eNB_UE_S1AP_ID++;
ue_ctxt_map[rnti].stream_id = 1;
ue_ctxt_map[rnti].release_requested = false;
enbid_to_rnti_map[ue_ctxt_map[rnti].eNB_UE_S1AP_ID] = rnti;
send_initialuemessage(rnti, pdu, true, m_tmsi, mmec);
send_initialuemessage(rnti, cause, pdu, true, m_tmsi, mmec);
}
void s1ap::write_pdu(uint16_t rnti, srslte::byte_buffer_t *pdu)
@ -609,7 +609,7 @@ bool s1ap::handle_s1setupfailure(LIBLTE_S1AP_MESSAGE_S1SETUPFAILURE_STRUCT *msg)
/* S1AP message senders
********************************************************************************/
bool s1ap::send_initialuemessage(uint16_t rnti, srslte::byte_buffer_t *pdu, bool has_tmsi, uint32_t m_tmsi, uint8_t mmec)
bool s1ap::send_initialuemessage(uint16_t rnti, LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM cause, srslte::byte_buffer_t *pdu, bool has_tmsi, uint32_t m_tmsi, uint8_t mmec)
{
if(!mme_connected) {
return false;
@ -662,7 +662,7 @@ bool s1ap::send_initialuemessage(uint16_t rnti, srslte::byte_buffer_t *pdu, bool
// RRC Establishment Cause
initue->RRC_Establishment_Cause.ext = false;
initue->RRC_Establishment_Cause.e = LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_MO_SIGNALLING;
initue->RRC_Establishment_Cause.e = cause;
liblte_s1ap_pack_s1ap_pdu(&tx_pdu, (LIBLTE_BYTE_MSG_STRUCT*)&msg);
s1ap_log->info_hex(msg.msg, msg.N_bytes, "Sending InitialUEMessage for RNTI:0x%x", rnti);