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srsLTE
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Intial code for S1 setup response

This commit is contained in:
Pedro Alvarez 2017-10-17 18:13:20 +01:00
parent 2bfb008bd2
commit 26f03a49f3
2 changed files with 70 additions and 10 deletions
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3
srsepc/hdr/mme/s1ap.h
View File

@ -59,7 +59,8 @@ public:
bool handle_s1setuprequest(LIBLTE_S1AP_MESSAGE_S1SETUPREQUEST_STRUCT *msg, struct sctp_sndrcvinfo *enb_sri);
bool send_s1setupfailure(struct sctp_sndrcvinfo *enb_sri);
bool send_s1setupresponse(struct sctp_sndrcvinfo *enb_sri);
private:
uint8_t m_mme_code;
uint16_t m_mme_group;

77
srsepc/src/mme/s1ap.cc
View File

@ -242,16 +242,8 @@ s1ap::handle_s1setuprequest(LIBLTE_S1AP_MESSAGE_S1SETUPREQUEST_STRUCT *msg, stru
LIBLTE_S1AP_PAGINGDRX_ENUM drx = msg->DefaultPagingDRX.e;
std::cout << "Default Paging DRX" << drx << std::endl;
send_s1setupfailure(enb_sri);
//sctp_send(m_s1mme,"OK",2,enb_sri,0);
/*
srslte::byte_buffer_t *pdu = pool_allocate;
memcpy(pdu->msg, msg->NAS_PDU.buffer, msg->NAS_PDU.n_octets);
pdu->N_bytes = msg->NAS_PDU.n_octets;
rrc->write_dl_info(rnti, pdu);
*/
return true;
}
@ -290,6 +282,73 @@ s1ap::send_s1setupfailure(struct sctp_sndrcvinfo *enb_sri)
return true;
}
bool
s1ap::send_s1setupresponse(struct sctp_sndrcvinfo *enb_sri)
{
srslte::byte_buffer_t msg;
LIBLTE_S1AP_S1AP_PDU_STRUCT pdu;
bzero(&pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_SUCCESSFULOUTCOME;
LIBLTE_S1AP_SUCCESSFULOUTCOME_STRUCT *succ = &pdu.choice.successfulOutcome;
succ->procedureCode = LIBLTE_S1AP_PROC_ID_S1SETUP;
succ->criticality = LIBLTE_S1AP_CRITICALITY_REJECT;
succ->choice_type = LIBLTE_S1AP_SUCCESSFULOUTCOME_CHOICE_S1SETUPRESPONSE;
LIBLTE_S1AP_MESSAGE_S1SETUPRESPONSE_STRUCT* s1_resp=(LIBLTE_S1AP_MESSAGE_S1SETUPRESPONSE_STRUCT*)&succ->choice;
s1_resp->ext=false;
//MME Name
s1_resp->MMEname_present=true;
s1_resp->MMEname.ext=false;
s1_resp->MMEname.n_octets=m_mme_name.length();
memcpy(s1_resp->MMEname.buffer,m_mme_name.c_str(),m_mme_name.length());
//Served GUMEIs
s1_resp->ServedGUMMEIs.len=1;//TODO Only one served GUMMEI supported
LIBLTE_S1AP_SERVEDGUMMEISITEM_STRUCT *serv_gummei = &s1_resp->ServedGUMMEIs.buffer[0];
serv_gummei->ext=false;
//serv_gummei->iE_Extensions=false;
uint32_t plmn=0;
srslte::s1ap_mccmnc_to_plmn(m_mcc, m_mnc, &plmn);
plmn=htonl(plmn);
serv_gummei->servedPLMNs.len = 1; //Only one PLMN supported
serv_gummei->servedPLMNs.buffer[0].buffer[0]=((uint8_t*)&plmn)[1];
serv_gummei->servedPLMNs.buffer[0].buffer[1]=((uint8_t*)&plmn)[2];
serv_gummei->servedPLMNs.buffer[0].buffer[2]=((uint8_t*)&plmn)[3];
serv_gummei->servedGroupIDs.len=1; //LIBLTE_S1AP_SERVEDGROUPIDS_STRUCT
uint16_t tmp=htons(m_mme_group);
serv_gummei->servedGroupIDs.buffer[0].buffer[0]=((uint8_t*)&tmp)[0];
serv_gummei->servedGroupIDs.buffer[0].buffer[1]=((uint8_t*)&tmp)[1];
serv_gummei->servedMMECs.len=1; //Only one MMEC served
serv_gummei->servedMMECs.buffer[0].buffer[0]=m_mme_code;
//Relative MME Capacity
s1_resp->RelativeMMECapacity.RelativeMMECapacity=255;
//Relay Unsupported
s1_resp->MMERelaySupportIndicator_present=false;
liblte_s1ap_pack_s1ap_pdu(&pdu, (LIBLTE_BYTE_MSG_STRUCT*)&msg);
ssize_t n_sent = sctp_send(m_s1mme,msg.msg, msg.N_bytes, enb_sri, 0);
if(n_sent == -1)
{
m_s1ap_log->console("Failed to send S1 Setup Failure");
return false;
}
return true;
}
/*
bool
s1ap::setup_enb_ctx()