189 lines
7.9 KiB
C
189 lines
7.9 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_interface_ue.c
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* \brief layer 2 interface, used to support different RRC sublayer
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* \author R. Knopp, K.H. HSU
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* \date 2018
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* \version 0.1
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* \company Eurecom / NTUST
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* \email: knopp@eurecom.fr, kai-hsiang.hsu@eurecom.fr
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* \note
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* \warning
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*/
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#include "L2_interface_ue.h"
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#include "assertions.h"
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#include "LAYER2/NR_MAC_COMMON/nr_mac.h"
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#include "openair2/LAYER2/NR_MAC_UE/mac_proto.h"
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typedef uint32_t channel_t;
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void nr_mac_rrc_sync_ind(const module_id_t module_id, const frame_t frame, const bool in_sync)
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{
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MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_SYNC_IND);
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NR_RRC_MAC_SYNC_IND (message_p).frame = frame;
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NR_RRC_MAC_SYNC_IND (message_p).in_sync = in_sync;
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itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(module_id), message_p);
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}
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void nr_mac_rrc_data_ind_ue(const module_id_t module_id,
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const int CC_id,
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const uint8_t gNB_index,
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const frame_t frame,
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const int slot,
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const rnti_t rnti,
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const uint32_t cellid,
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const long arfcn,
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const channel_t channel,
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const uint8_t* pduP,
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const sdu_size_t pdu_len)
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{
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sdu_size_t sdu_size = 0;
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MessageDef *message_p;
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switch(channel) {
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case NR_BCCH_BCH:
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case NR_BCCH_DL_SCH:
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message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_BCCH_DATA_IND);
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memset(NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu, 0, BCCH_SDU_SIZE);
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if (pdu_len > 0) {
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LOG_T(NR_RRC,
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"[UE %d] Received SDU for NR-BCCH-DL-SCH on SRB %u from gNB %d\n",
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module_id,
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channel & RAB_OFFSET,
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gNB_index);
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int msg_sdu_size = BCCH_SDU_SIZE;
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if (pdu_len > msg_sdu_size) {
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LOG_E(NR_RRC, "SDU larger than NR-BCCH-DL-SCH SDU buffer size (%d, %d)", sdu_size, msg_sdu_size);
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sdu_size = msg_sdu_size;
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} else {
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sdu_size = pdu_len;
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}
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memcpy(NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu, pduP, sdu_size);
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NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu_size = sdu_size;
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}
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else {
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NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu_size = 0;
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}
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NR_RRC_MAC_BCCH_DATA_IND (message_p).frame = frame; //frameP
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NR_RRC_MAC_BCCH_DATA_IND (message_p).slot = slot;
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NR_RRC_MAC_BCCH_DATA_IND (message_p).gnb_index = gNB_index;
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NR_RRC_MAC_BCCH_DATA_IND (message_p).phycellid = cellid;
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NR_RRC_MAC_BCCH_DATA_IND (message_p).ssb_arfcn = arfcn;
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NR_RRC_MAC_BCCH_DATA_IND (message_p).is_bch = (channel == NR_BCCH_BCH);
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itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(module_id), message_p);
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break;
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case NR_SBCCH_SL_BCH:
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if (pdu_len > 0) {
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LOG_T(NR_RRC, "[UE %d] Received SL-MIB for NR_SBCCH_SL_BCH.\n", module_id);
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int msg_sdu_size = BCCH_SDU_SIZE;
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if (pdu_len > msg_sdu_size) {
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LOG_E(NR_RRC, "SDU larger than NR_SBCCH_SL_BCH SDU buffer size (%d, %d)", sdu_size, msg_sdu_size);
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sdu_size = msg_sdu_size;
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} else {
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sdu_size = pdu_len;
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}
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message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_SBCCH_DATA_IND);
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memset(NR_RRC_MAC_SBCCH_DATA_IND (message_p).sdu, 0, BCCH_SDU_SIZE);
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memcpy(NR_RRC_MAC_SBCCH_DATA_IND (message_p).sdu, pduP, sdu_size);
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NR_RRC_MAC_SBCCH_DATA_IND (message_p).frame = frame; //frameP
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NR_RRC_MAC_SBCCH_DATA_IND (message_p).slot = slot;
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NR_RRC_MAC_SBCCH_DATA_IND (message_p).sdu_size = sdu_size;
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NR_RRC_MAC_SBCCH_DATA_IND(message_p).rx_slss_id = cellid; // cellid is rx slss id
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itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(module_id), message_p);
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}
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break;
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default:
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AssertFatal(false, "Invalid channel in data indication\n");
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}
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}
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void process_msg_rcc_to_mac(MessageDef *msg)
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{
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instance_t ue_id = ITTI_MSG_DESTINATION_INSTANCE(msg);
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switch (ITTI_MSG_ID(msg)) {
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case NR_MAC_RRC_CONFIG_RESET:
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nr_rrc_mac_config_req_reset(ue_id, NR_MAC_RRC_CONFIG_RESET(msg).cause);
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break;
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case NR_MAC_RRC_CONFIG_CG:
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nr_rrc_mac_config_req_cg(ue_id, 0, NR_MAC_RRC_CONFIG_CG(msg).cellGroupConfig, NR_MAC_RRC_CONFIG_CG(msg).UE_NR_Capability);
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asn1cFreeStruc(asn_DEF_NR_CellGroupConfig, NR_MAC_RRC_CONFIG_CG(msg).cellGroupConfig);
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break;
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case NR_MAC_RRC_CONFIG_MIB:
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nr_rrc_mac_config_req_mib(ue_id, 0, NR_MAC_RRC_CONFIG_MIB(msg).bcch->message.choice.mib, NR_MAC_RRC_CONFIG_MIB(msg).get_sib);
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ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, NR_MAC_RRC_CONFIG_MIB(msg).bcch);
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break;
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case NR_MAC_RRC_CONFIG_SIB1: {
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NR_SIB1_t *sib1 = NR_MAC_RRC_CONFIG_SIB1(msg).sib1;
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bool can_start_ra = NR_MAC_RRC_CONFIG_SIB1(msg).can_start_ra;
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nr_rrc_mac_config_req_sib1(ue_id, 0, sib1, can_start_ra);
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SEQUENCE_free(&asn_DEF_NR_SIB1, NR_MAC_RRC_CONFIG_SIB1(msg).sib1, ASFM_FREE_EVERYTHING);
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} break;
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case NR_MAC_RRC_CONFIG_OTHER_SIB: {
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bool can_start_ra = NR_MAC_RRC_CONFIG_OTHER_SIB(msg).can_start_ra;
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nr_rrc_mac_config_other_sib(ue_id, NR_MAC_RRC_CONFIG_OTHER_SIB(msg).sib19, can_start_ra);
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} break;
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case NR_MAC_RRC_RESUME_RB:
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nr_rrc_mac_resume_rb(ue_id, NR_MAC_RRC_RESUME_RB(msg).is_srb, NR_MAC_RRC_RESUME_RB(msg).rb_id);
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break;
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default:
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LOG_E(NR_MAC, "Unexpected msg from RRC: %d\n", ITTI_MSG_ID(msg));
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}
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itti_free(ITTI_MSG_ORIGIN_ID(msg), msg);
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}
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void nr_mac_rrc_inactivity_timer_ind(const module_id_t mod_id)
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{
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MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_INAC_IND);
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NR_RRC_MAC_INAC_IND (message_p).inactivity_timer_expired = true;
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itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(mod_id), message_p);
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}
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void nr_mac_rrc_msg3_ind(const module_id_t mod_id, const int rnti, bool prepare_payload)
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{
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MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_MSG3_IND);
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NR_RRC_MAC_MSG3_IND (message_p).rnti = rnti;
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NR_RRC_MAC_MSG3_IND (message_p).prepare_payload = prepare_payload;
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itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(mod_id), message_p);
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}
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void nr_ue_rrc_timer_trigger(int instance, int frame, int gnb_id)
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{
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MessageDef *message_p;
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message_p = itti_alloc_new_message(TASK_RRC_NRUE, 0, NRRRC_FRAME_PROCESS);
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NRRRC_FRAME_PROCESS(message_p).frame = frame;
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NRRRC_FRAME_PROCESS(message_p).gnb_id = gnb_id;
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LOG_D(NR_RRC, "RRC timer trigger: frame %d\n", frame);
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itti_send_msg_to_task(TASK_RRC_NRUE, instance, message_p);
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}
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void nr_mac_rrc_ra_ind(const module_id_t mod_id, bool success)
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{
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MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_RA_IND);
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NR_RRC_MAC_RA_IND (message_p).RA_succeeded = success;
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itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(mod_id), message_p);
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}
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