152 lines
5.8 KiB
C
152 lines
5.8 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file l2_nr_interface.c
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* \brief layer 2 interface, used to support different RRC sublayer
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* \author Raymond Knopp and Navid Nikaein, WEI-TAI CHEN
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* \date 2010-2014, 2018
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* \version 1.0
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* \company Eurecom, NTUST
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* \email: raymond.knopp@eurecom.fr, kroempa@gmail.com
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*/
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#include "platform_types.h"
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#include "nr_rrc_defs.h"
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#include "nr_rrc_extern.h"
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#include "common/utils/LOG/log.h"
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#include "common/ran_context.h"
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#include "LAYER2/NR_MAC_COMMON/nr_mac_common.h"
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#include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h"
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#include "intertask_interface.h"
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#include "NR_MIB.h"
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#include "NR_BCCH-BCH-Message.h"
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#include "rrc_gNB_UE_context.h"
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#include <openair2/RRC/NR/MESSAGES/asn1_msg.h>
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#include "nr_pdcp/nr_pdcp_oai_api.h"
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extern RAN_CONTEXT_t RC;
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int
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nr_rrc_mac_remove_ue(module_id_t mod_idP,
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rnti_t rntiP){
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// todo
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return 0;
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}
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uint16_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
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const int CC_id,
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const frame_t frameP,
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const rb_id_t Srb_id,
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const rnti_t rnti,
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const uint8_t Nb_tb,
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uint8_t *const buffer_pP)
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{
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LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id);
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// MIBCH
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if ((Srb_id & RAB_OFFSET) == MIBCH) {
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asn_enc_rval_t enc_rval;
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uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f);
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rrc_gNB_carrier_data_t *carrier = &RC.nrrrc[Mod_idP]->carrier;
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NR_BCCH_BCH_Message_t *mib = &carrier->mib;
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mib->message.choice.mib->systemFrameNumber.buf[0] = sfn_msb << 2;
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enc_rval = uper_encode_to_buffer(&asn_DEF_NR_BCCH_BCH_Message,
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NULL,
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(void *) mib,
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carrier->MIB,
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24);
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LOG_D(NR_RRC, "Encoded MIB for frame %d sfn_msb %d (%p), bits %lu\n", frameP, sfn_msb, carrier->MIB,
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enc_rval.encoded);
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buffer_pP[0] = carrier->MIB[0];
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buffer_pP[1] = carrier->MIB[1];
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buffer_pP[2] = carrier->MIB[2];
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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],
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buffer_pP[2]);
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AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n",
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enc_rval.failed_type->name, enc_rval.encoded);
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return 3;
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}
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// TODO BCCH SIB1 SIBs
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if ((Srb_id & RAB_OFFSET) == BCCH) {
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memcpy(&buffer_pP[0], RC.nrrrc[Mod_idP]->carrier.SIB1, RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1);
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return RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1;
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}
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// CCCH
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if ((Srb_id & RAB_OFFSET) == CCCH) {
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AssertFatal(0, "CCCH is managed by rlc of srb 0, not anymore by mac_rrc_nr_data_req\n");
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}
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return 0;
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}
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int8_t nr_mac_rrc_bwp_switch_req(const module_id_t module_idP,
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const frame_t frameP,
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const sub_frame_t sub_frameP,
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const rnti_t rntiP,
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const int dl_bwp_id,
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const int ul_bwp_id) {
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rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[module_idP], rntiP);
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protocol_ctxt_t ctxt;
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PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, GNB_FLAG_YES, rntiP, frameP, sub_frameP, 0);
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nr_rrc_reconfiguration_req(ue_context_p, &ctxt, dl_bwp_id, ul_bwp_id);
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return 0;
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}
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void nr_mac_gNB_rrc_ul_failure(const module_id_t Mod_instP,
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const int CC_idP,
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const frame_t frameP,
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const sub_frame_t subframeP,
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const rnti_t rntiP) {
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rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[Mod_instP], rntiP);
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if (ue_context_p != NULL) {
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LOG_D(RRC,"Frame %d, Subframe %d: UE %x UL failure, activating timer\n",frameP,subframeP,rntiP);
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if(ue_context_p->ue_context.ul_failure_timer == 0)
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ue_context_p->ue_context.ul_failure_timer=1;
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} else {
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LOG_D(RRC,"Frame %d, Subframe %d: UL failure: UE %x unknown \n",frameP,subframeP,rntiP);
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}
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}
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void nr_mac_gNB_rrc_ul_failure_reset(const module_id_t Mod_instP,
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const frame_t frameP,
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const sub_frame_t subframeP,
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const rnti_t rntiP) {
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rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[Mod_instP], rntiP);
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if (ue_context_p != NULL) {
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LOG_W(RRC,"Frame %d, Subframe %d: UE %x UL failure reset, deactivating timer\n",frameP,subframeP,rntiP);
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ue_context_p->ue_context.ul_failure_timer=0;
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} else {
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LOG_W(RRC,"Frame %d, Subframe %d: UL failure reset: UE %x unknown \n",frameP,subframeP,rntiP);
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}
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}
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