/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.1 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ /*! \file l2_nr_interface.c * \brief layer 2 interface, used to support different RRC sublayer * \author Raymond Knopp and Navid Nikaein, WEI-TAI CHEN * \date 2010-2014, 2018 * \version 1.0 * \company Eurecom, NTUST * \email: raymond.knopp@eurecom.fr, kroempa@gmail.com */ #include "platform_types.h" #include "nr_rrc_defs.h" #include "nr_rrc_extern.h" #include "common/utils/LOG/log.h" #include "pdcp.h" #include "msc.h" #include "common/ran_context.h" #include "intertask_interface.h" #include "NR_MIB.h" #include "NR_BCCH-BCH-Message.h" extern RAN_CONTEXT_t RC; int nr_rrc_mac_remove_ue(module_id_t mod_idP, rnti_t rntiP){ // todo return 0; } //------------------------------------------------------------------------------ uint8_t nr_rrc_data_req( const protocol_ctxt_t *const ctxt_pP, const rb_id_t rb_idP, const mui_t muiP, const confirm_t confirmP, const sdu_size_t sdu_sizeP, uint8_t *const buffer_pP, const pdcp_transmission_mode_t modeP ) //------------------------------------------------------------------------------ { if(sdu_sizeP == 255) { LOG_I(RRC,"sdu_sizeP == 255"); return FALSE; } MSC_LOG_TX_MESSAGE( ctxt_pP->enb_flag ? MSC_RRC_ENB : MSC_RRC_UE, ctxt_pP->enb_flag ? MSC_PDCP_ENB : MSC_PDCP_UE, buffer_pP, sdu_sizeP, MSC_AS_TIME_FMT"RRC_DCCH_DATA_REQ UE %x MUI %d size %u", MSC_AS_TIME_ARGS(ctxt_pP), ctxt_pP->rnti, muiP, sdu_sizeP); MessageDef *message_p; // Uses a new buffer to avoid issue with PDCP buffer content that could be changed by PDCP (asynchronous message handling). uint8_t *message_buffer; message_buffer = itti_malloc ( ctxt_pP->enb_flag ? TASK_RRC_ENB : TASK_RRC_UE, ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, sdu_sizeP); memcpy (message_buffer, buffer_pP, sdu_sizeP); message_p = itti_alloc_new_message (ctxt_pP->enb_flag ? TASK_RRC_ENB : TASK_RRC_UE, RRC_DCCH_DATA_REQ); RRC_DCCH_DATA_REQ (message_p).frame = ctxt_pP->frame; RRC_DCCH_DATA_REQ (message_p).enb_flag = ctxt_pP->enb_flag; RRC_DCCH_DATA_REQ (message_p).rb_id = rb_idP; RRC_DCCH_DATA_REQ (message_p).muip = muiP; RRC_DCCH_DATA_REQ (message_p).confirmp = confirmP; RRC_DCCH_DATA_REQ (message_p).sdu_size = sdu_sizeP; RRC_DCCH_DATA_REQ (message_p).sdu_p = message_buffer; //memcpy (RRC_DCCH_DATA_REQ (message_p).sdu_p, buffer_pP, sdu_sizeP); RRC_DCCH_DATA_REQ (message_p).mode = modeP; RRC_DCCH_DATA_REQ (message_p).module_id = ctxt_pP->module_id; RRC_DCCH_DATA_REQ (message_p).rnti = ctxt_pP->rnti; RRC_DCCH_DATA_REQ (message_p).eNB_index = ctxt_pP->eNB_index; itti_send_msg_to_task ( ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, ctxt_pP->instance, message_p); LOG_I(RRC,"sent RRC_DCCH_DATA_REQ to TASK_PDCP_ENB\n"); /* Hack: only trigger PDCP if in CU, otherwise it is triggered by RU threads * Ideally, PDCP would not neet to be triggered like this but react to ITTI * messages automatically */ // if (ctxt_pP->enb_flag && NODE_IS_CU(RC.rrc[ctxt_pP->module_id]->node_type)) // pdcp_run(ctxt_pP); return TRUE; // TODO should be changed to a CNF message later, currently RRC lite does not used the returned value anyway. } int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP, const int CC_id, const frame_t frameP, const rb_id_t Srb_id, const rnti_t rnti, const uint8_t Nb_tb, uint8_t *const buffer_pP ){ asn_enc_rval_t enc_rval; uint8_t Sdu_size = 0; uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f); #ifdef DEBUG_RRC LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id); #endif gNB_RRC_INST *rrc; rrc_gNB_carrier_data_t *carrier; NR_BCCH_BCH_Message_t *mib; NR_SRB_INFO * srb_info; char payload_size, *payload_pP; rrc = RC.nrrrc[Mod_idP]; carrier = &rrc->carrier; mib = &carrier->mib; srb_info = &carrier->Srb0; /* MIBCH */ if( (Srb_id & RAB_OFFSET ) == MIBCH) { mib->message.choice.mib->systemFrameNumber.buf[0] = sfn_msb << 2; enc_rval = uper_encode_to_buffer(&asn_DEF_NR_BCCH_BCH_Message, NULL, (void *)mib, carrier->MIB, 24); LOG_D(NR_RRC,"Encoded MIB for frame %d sfn_msb %d (%p), bits %lu\n",frameP,sfn_msb,carrier->MIB,enc_rval.encoded); buffer_pP[0]=carrier->MIB[0]; buffer_pP[1]=carrier->MIB[1]; buffer_pP[2]=carrier->MIB[2]; LOG_D(NR_RRC,"MIB PDU buffer_pP[0]=%x , buffer_pP[1]=%x, buffer_pP[2]=%x\n",buffer_pP[0],buffer_pP[1],buffer_pP[2]); AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n", enc_rval.failed_type->name, enc_rval.encoded); return(3); } /* TODO BCCH SIB1 SIBs */ if ((Srb_id & RAB_OFFSET ) == BCCH) { memcpy(&buffer_pP[0], RC.rrc[Mod_idP]->carrier[CC_id].SIB1_MBMS, RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1_MBMS); } /* CCCH */ struct rrc_gNB_ue_context_s *ue_context_p = NULL; if( (Srb_id & RAB_OFFSET ) == CCCH) { //struct rrc_eNB_ue_context_s *ue_context_p = rrc_eNB_get_ue_context(RC.rrc[Mod_idP],rnti); //if (ue_context_p == NULL) return(0); //eNB_RRC_UE_t *ue_p = &ue_context_p->ue_context; ue_context_p = rrc_gNB_get_ue_context(RC.nrrrc[Mod_idP], rnti); // LOG_I(NR_RRC,"3333 Returning new UE context at %p\n",RC.nrrrc[Mod_idP]); // LOG_I(NR_RRC,"4444 Returning new UE context at %p\n",ue_context_p); LOG_I(RRC,"[gNB %d] Frame %d CCCH request (Srb_id %ld), ue_context_p %p \n", Mod_idP, frameP, Srb_id, ue_context_p ); // srb_info=&ue_p->Srb0; payload_size = ue_context_p->ue_context.Srb0.Tx_buffer.payload_size; // check if data is there for MAC if (payload_size > 0) { payload_pP = ue_context_p->ue_context.Srb0.Tx_buffer.Payload; LOG_D(RRC,"[gNB %d] CCCH (%p) has %d bytes (dest: %p, src %p)\n", Mod_idP, srb_info, payload_size, buffer_pP, payload_pP); // Fill buffer memcpy((void *)buffer_pP, (void*)payload_pP, payload_size); Sdu_size = payload_size; ue_context_p->ue_context.Srb0.Tx_buffer.payload_size = 0; } return Sdu_size; } return(0); } //------------------------------------------------------------------------------ int8_t nr_mac_rrc_data_ind( const module_id_t module_idP, const int CC_id, const frame_t frameP, const sub_frame_t sub_frameP, const int UE_id, const rnti_t rntiP, const rb_id_t srb_idP, const uint8_t *sduP, const sdu_size_t sdu_lenP, const uint8_t mbsfn_sync_areaP, const boolean_t brOption ) //-------------------------------------------------------------------------- { // if (NODE_IS_DU(RC.nrrrc[module_idP]->node_type)) { // LOG_W(RRC,"[DU %d][RAPROC] Received SDU for CCCH on SRB %ld length %d for UE id %d RNTI %x \n", // module_idP, srb_idP, sdu_lenP, UE_id, rntiP); // /* do ITTI message */ // DU_send_INITIAL_UL_RRC_MESSAGE_TRANSFER( // module_idP, // CC_id, // UE_id, // rntiP, // sduP, // sdu_lenP // ); // return(0); // } //SRB_INFO *Srb_info; protocol_ctxt_t ctxt; sdu_size_t sdu_size = 0; /* for no gcc warnings */ (void)sdu_size; /* int si_window; */ PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, GNB_FLAG_YES, rntiP, frameP, sub_frameP,0); if((srb_idP & RAB_OFFSET) == CCCH) { LOG_D(RRC, "[eNB %d] Received SDU for CCCH on SRB %ld\n", module_idP, srb_idP); ctxt.brOption = brOption; /*Srb_info = &RC.rrc[module_idP]->carrier[CC_id].Srb0; if (sdu_lenP > 0) { memcpy(Srb_info->Rx_buffer.Payload,sduP,sdu_lenP); Srb_info->Rx_buffer.payload_size = sdu_lenP; rrc_eNB_decode_ccch(&ctxt, Srb_info, CC_id); }*/ if (sdu_lenP > 0) nr_rrc_gNB_decode_ccch(&ctxt, sduP, sdu_lenP, CC_id); } return(0); }