mirror of https://github.com/pvnis/srsRAN_4G.git
Separating msg packing from the main S1AP class.
Pedro Alvarez
7 years ago
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eb3520630d
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2017 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef S1AP_MNGMT_PROC_H
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#define S1AP_MNGMT_PROC_H
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#include "srslte/asn1/liblte_s1ap.h"
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#include "srslte/common/common.h"
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namespace srsepc{
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static const uint8_t MAX_TA=255;
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static const uint8_t MAX_BPLMN=6;
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typedef struct{
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bool enb_name_present;
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uint32_t enb_id;
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uint8_t enb_name[150];
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uint16_t mcc, mnc;
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uint32_t plmn;
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uint8_t nof_supported_ta;
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uint16_t tac[MAX_TA];
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uint8_t nof_supported_bplmns[MAX_TA];
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uint16_t bplmns[MAX_TA][MAX_BPLMN];
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LIBLTE_S1AP_PAGINGDRX_ENUM drx;
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struct sctp_sndrcvinfo sri;
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} enb_ctx_t;
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class s1ap_mngmt_proc
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{
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public:
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s1ap_mngmt_proc();
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virtual ~s1ap_mngmt_proc();
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bool unpack_s1_setup_request(LIBLTE_S1AP_MESSAGE_S1SETUPREQUEST_STRUCT *msg, enb_ctx_t* enb_ctx);
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bool pack_s1_setup_failure(LIBLTE_S1AP_CAUSEMISC_ENUM cause, srslte::byte_buffer_t* msg);
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bool pack_s1_setup_response(LIBLTE_S1AP_S1AP_PDU_STRUCT *pdu);
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};
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} //namespace srsepc
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#endif //S1AP_MNGMT_PROC
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@ -0,0 +1,184 @@
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2017 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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//#include "srslte/upper/s1ap_common.h"
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#include "srslte/common/bcd_helpers.h"
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#include "mme/s1ap.h"
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#include "mme/s1ap_mngmt_proc.h"
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namespace srsepc{
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s1ap_mngmt_proc::s1ap_mngmt_proc()
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{
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}
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s1ap_mngmt_proc::~s1ap_mngmt_proc()
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{
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}
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bool
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s1ap_mngmt_proc::unpack_s1_setup_request(LIBLTE_S1AP_MESSAGE_S1SETUPREQUEST_STRUCT *msg, enb_ctx_t* enb_ctx)
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{
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uint8_t enb_id_bits[32];
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uint32_t plmn = 0;
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uint16_t tac, bplmn;
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uint32_t tmp32=0;
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//eNB Name
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enb_ctx->enb_name_present=msg->eNBname_present;
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if(msg->eNBname_present)
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{
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bzero(enb_ctx->enb_name,sizeof(enb_ctx->enb_name));
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memcpy(enb_ctx->enb_name,&msg->eNBname.buffer,msg->eNBname.n_octets);
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}
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//eNB Id
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bzero(enb_id_bits,sizeof(enb_id_bits));
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memcpy(&enb_id_bits[32-LIBLTE_S1AP_MACROENB_ID_BIT_STRING_LEN], msg->Global_ENB_ID.eNB_ID.choice.macroENB_ID.buffer, LIBLTE_S1AP_MACROENB_ID_BIT_STRING_LEN);
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liblte_pack(enb_id_bits, 32, (uint8_t*) &tmp32);
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enb_ctx->enb_id=ntohl(tmp32);
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//PLMN Id
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((uint8_t*)&plmn)[1] = msg->Global_ENB_ID.pLMNidentity.buffer[0];
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((uint8_t*)&plmn)[2] = msg->Global_ENB_ID.pLMNidentity.buffer[1];
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((uint8_t*)&plmn)[3] = msg->Global_ENB_ID.pLMNidentity.buffer[2];
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enb_ctx->plmn = ntohl(plmn);
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srslte::s1ap_plmn_to_mccmnc(enb_ctx->plmn, &enb_ctx->mcc, &enb_ctx->mnc);
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//SupportedTAs
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enb_ctx->nof_supported_ta=msg->SupportedTAs.len;
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for(uint16_t i=0; i<msg->SupportedTAs.len; i++)
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{
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//TAC
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((uint8_t*)&enb_ctx->tac[i])[0] = msg->SupportedTAs.buffer[i].tAC.buffer[0];
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((uint8_t*)&enb_ctx->tac[i])[1] = msg->SupportedTAs.buffer[i].tAC.buffer[1];
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enb_ctx->tac[i]=ntohs(enb_ctx->tac[i]);
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enb_ctx->nof_supported_bplmns[i]=msg->SupportedTAs.buffer[i].broadcastPLMNs.len;
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for (uint16_t j=0; j<msg->SupportedTAs.buffer[i].broadcastPLMNs.len; j++)
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{
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//BPLMNs
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((uint8_t*)&enb_ctx->bplmns[i][j])[1] = msg->SupportedTAs.buffer[i].broadcastPLMNs.buffer[j].buffer[0];
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((uint8_t*)&enb_ctx->bplmns[i][j])[2] = msg->SupportedTAs.buffer[i].broadcastPLMNs.buffer[j].buffer[1];
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((uint8_t*)&enb_ctx->bplmns[i][j])[3] = msg->SupportedTAs.buffer[i].broadcastPLMNs.buffer[j].buffer[2];
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enb_ctx->bplmns[i][j] = ntohl(enb_ctx->bplmns[i][j]);
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}
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}
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//Default Paging DRX
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enb_ctx->drx = msg->DefaultPagingDRX.e;
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return true;
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}
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bool
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s1ap_mngmt_proc::pack_s1_setup_failure(LIBLTE_S1AP_CAUSEMISC_ENUM cause, srslte::byte_buffer_t *msg)
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{
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LIBLTE_S1AP_S1AP_PDU_STRUCT pdu;
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bzero(&pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
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pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_UNSUCCESSFULOUTCOME;
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LIBLTE_S1AP_UNSUCCESSFULOUTCOME_STRUCT *unsucc = &pdu.choice.unsuccessfulOutcome;
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unsucc->procedureCode = LIBLTE_S1AP_PROC_ID_S1SETUP;
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unsucc->criticality = LIBLTE_S1AP_CRITICALITY_REJECT;
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unsucc->choice_type = LIBLTE_S1AP_UNSUCCESSFULOUTCOME_CHOICE_S1SETUPFAILURE;
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LIBLTE_S1AP_MESSAGE_S1SETUPFAILURE_STRUCT* s1_fail=(LIBLTE_S1AP_MESSAGE_S1SETUPFAILURE_STRUCT*)&unsucc->choice;
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s1_fail->TimeToWait_present=false;
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s1_fail->CriticalityDiagnostics_present=false;
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s1_fail->Cause.ext=false;
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s1_fail->Cause.choice_type = LIBLTE_S1AP_CAUSE_CHOICE_MISC;
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s1_fail->Cause.choice.misc.ext=false;
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s1_fail->Cause.choice.misc.e=cause;
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liblte_s1ap_pack_s1ap_pdu(&pdu, (LIBLTE_BYTE_MSG_STRUCT*)msg);
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return true;
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}
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bool
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s1ap_mngmt_proc::pack_s1_setup_response(LIBLTE_S1AP_S1AP_PDU_STRUCT *pdu)
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{
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/*
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srslte::byte_buffer_t msg;
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//LIBLTE_S1AP_S1AP_PDU_STRUCT pdu;
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bzero(pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
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pdu->choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_SUCCESSFULOUTCOME;
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LIBLTE_S1AP_SUCCESSFULOUTCOME_STRUCT *succ = &pdu->choice.successfulOutcome;
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succ->procedureCode = LIBLTE_S1AP_PROC_ID_S1SETUP;
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succ->criticality = LIBLTE_S1AP_CRITICALITY_IGNORE;
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succ->choice_type = LIBLTE_S1AP_SUCCESSFULOUTCOME_CHOICE_S1SETUPRESPONSE;
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LIBLTE_S1AP_MESSAGE_S1SETUPRESPONSE_STRUCT* s1_resp=(LIBLTE_S1AP_MESSAGE_S1SETUPRESPONSE_STRUCT*)&succ->choice;
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s1_resp->ext=false;
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//MME Name
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s1_resp->MMEname_present=true;
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s1_resp->MMEname.ext=false;
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s1_resp->MMEname.n_octets=m_mme_name.length();
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memcpy(s1_resp->MMEname.buffer,m_mme_name.c_str(),m_mme_name.length());
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//Served GUMEIs
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s1_resp->ServedGUMMEIs.len=1;//TODO Only one served GUMMEI supported
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LIBLTE_S1AP_SERVEDGUMMEISITEM_STRUCT *serv_gummei = &s1_resp->ServedGUMMEIs.buffer[0];
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serv_gummei->ext=false;
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//serv_gummei->iE_Extensions=false;
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uint32_t plmn=0;
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srslte::s1ap_mccmnc_to_plmn(m_mcc, m_mnc, &plmn);
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plmn=htonl(plmn);
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serv_gummei->servedPLMNs.len = 1; //Only one PLMN supported
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serv_gummei->servedPLMNs.buffer[0].buffer[0]=((uint8_t*)&plmn)[1];
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serv_gummei->servedPLMNs.buffer[0].buffer[1]=((uint8_t*)&plmn)[2];
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serv_gummei->servedPLMNs.buffer[0].buffer[2]=((uint8_t*)&plmn)[3];
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serv_gummei->servedGroupIDs.len=1; //LIBLTE_S1AP_SERVEDGROUPIDS_STRUCT
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uint16_t tmp=htons(m_mme_group);
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serv_gummei->servedGroupIDs.buffer[0].buffer[0]=((uint8_t*)&tmp)[0];
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serv_gummei->servedGroupIDs.buffer[0].buffer[1]=((uint8_t*)&tmp)[1];
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serv_gummei->servedMMECs.len=1; //Only one MMEC served
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serv_gummei->servedMMECs.buffer[0].buffer[0]=m_mme_code;
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//Relative MME Capacity
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s1_resp->RelativeMMECapacity.RelativeMMECapacity=255;
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//Relay Unsupported
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s1_resp->MMERelaySupportIndicator_present=false;
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liblte_s1ap_pack_s1ap_pdu(pdu, (LIBLTE_BYTE_MSG_STRUCT*)&msg);
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*/
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return true;
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}
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} //namespace srsepc
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