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/*
* 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 "common/ran_context.h"
#include "LAYER2/NR_MAC_COMMON/nr_mac_common.h"
#include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h"
#include "LAYER2/NR_MAC_gNB/nr_mac_gNB.h"
#include "LAYER2/NR_MAC_gNB/mac_proto.h"
#include "LAYER2/nr_rlc/nr_rlc_oai_api.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>
#include "nr_pdcp/nr_pdcp_oai_api.h"
extern RAN_CONTEXT_t RC;
void nr_rrc_mac_remove_ue(rnti_t rntiMaybeUEid)
{
nr_rlc_remove_ue(rntiMaybeUEid);
gNB_MAC_INST *nrmac = RC.nrmac[0];
mac_remove_nr_ue(nrmac, rntiMaybeUEid);
}
void nr_rrc_mac_update_cellgroup(rnti_t rntiMaybeUEid, NR_CellGroupConfig_t *cgc)
{
nr_mac_update_cellgroup(RC.nrmac[0], rntiMaybeUEid, cgc);
}
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) {
int encode_size = 3;
rrc_gNB_carrier_data_t *carrier = &RC.nrrrc[Mod_idP]->carrier;
int encoded = encode_MIB_NR(carrier->mib, frameP, buffer_pP, encode_size);
DevAssert(encoded == encode_size);
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]);
return encode_size;
}
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);
}
}