/* * 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 "common/ran_context.h" #include "LAYER2/NR_MAC_COMMON/nr_mac_common.h" #include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h" #include "intertask_interface.h" #include "NR_MIB.h" #include "NR_BCCH-BCH-Message.h" #include "rrc_gNB_UE_context.h" #include <openair2/RRC/NR/MESSAGES/asn1_msg.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 ) //------------------------------------------------------------------------------ { 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_GNB : 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_GNB : TASK_RRC_UE, 0, 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 (NR_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->rntiMaybeUEid; 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(NR_RRC,"send RRC_DCCH_DATA_REQ to PDCP\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) 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. } uint16_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) { LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id); // MIBCH if ((Srb_id & RAB_OFFSET) == MIBCH) { asn_enc_rval_t enc_rval; uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f); rrc_gNB_carrier_data_t *carrier = &RC.nrrrc[Mod_idP]->carrier; NR_BCCH_BCH_Message_t *mib = &carrier->mib; 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.nrrrc[Mod_idP]->carrier.SIB1, RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1); return RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1; } // CCCH if ((Srb_id & RAB_OFFSET) == CCCH) { AssertFatal(0, "CCCH is managed by rlc of srb 0, not anymore by mac_rrc_nr_data_req\n"); } return 0; } int8_t nr_mac_rrc_bwp_switch_req(const module_id_t module_idP, const frame_t frameP, const sub_frame_t sub_frameP, const rnti_t rntiP, const int dl_bwp_id, const int ul_bwp_id) { rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[module_idP], rntiP); protocol_ctxt_t ctxt; PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, GNB_FLAG_YES, rntiP, frameP, sub_frameP, 0); nr_rrc_reconfiguration_req(ue_context_p, &ctxt, dl_bwp_id, ul_bwp_id); return 0; } void nr_mac_gNB_rrc_ul_failure(const module_id_t Mod_instP, const int CC_idP, const frame_t frameP, const sub_frame_t subframeP, const rnti_t rntiP) { rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[Mod_instP], rntiP); if (ue_context_p != NULL) { LOG_D(RRC,"Frame %d, Subframe %d: UE %x UL failure, activating timer\n",frameP,subframeP,rntiP); if(ue_context_p->ue_context.ul_failure_timer == 0) ue_context_p->ue_context.ul_failure_timer=1; } else { LOG_D(RRC,"Frame %d, Subframe %d: UL failure: UE %x unknown \n",frameP,subframeP,rntiP); } } void nr_mac_gNB_rrc_ul_failure_reset(const module_id_t Mod_instP, const frame_t frameP, const sub_frame_t subframeP, const rnti_t rntiP) { rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[Mod_instP], rntiP); if (ue_context_p != NULL) { LOG_W(RRC,"Frame %d, Subframe %d: UE %x UL failure reset, deactivating timer\n",frameP,subframeP,rntiP); ue_context_p->ue_context.ul_failure_timer=0; } else { LOG_W(RRC,"Frame %d, Subframe %d: UL failure reset: UE %x unknown \n",frameP,subframeP,rntiP); } }