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openairinterface5g/openair2/RRC/NR_UE/L2_interface_ue.c
T
Robert Schmidt 8107939f08 Change OAI license to CSSL v1.0 (and others) 
- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
  scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly

For automated changes based on OAI PL v1.1:

    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
    perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml

The rest (cmake, files with missing license, cmake) manually.
2026-03-27 16:36:37 +01:00

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/*
* SPDX-License-Identifier: LicenseRef-CSSL-1.0
*/
/*
* \brief layer 2 interface, used to support different RRC sublayer
*/
#include "L2_interface_ue.h"
#include "assertions.h"
#include "LAYER2/NR_MAC_COMMON/nr_mac.h"
#include "openair2/LAYER2/NR_MAC_UE/mac_proto.h"
typedef uint32_t channel_t;
void nr_mac_rrc_meas_ind_ue(module_id_t module_id, uint32_t gNB_index, uint16_t Nid_cell, bool csi_meas, bool is_neighboring_cell, int rsrp_dBm)
{
MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_MEAS_DATA_IND);
NR_RRC_MAC_MEAS_DATA_IND(message_p).gnb_index = gNB_index;
NR_RRC_MAC_MEAS_DATA_IND(message_p).Nid_cell = Nid_cell;
NR_RRC_MAC_MEAS_DATA_IND(message_p).is_csi_meas = csi_meas;
NR_RRC_MAC_MEAS_DATA_IND(message_p).is_neighboring_cell = is_neighboring_cell;
NR_RRC_MAC_MEAS_DATA_IND(message_p).rsrp_dBm = rsrp_dBm;
itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(module_id), message_p);
}
void nr_mac_rrc_sync_ind(const module_id_t module_id, const frame_t frame, const bool in_sync)
{
MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_SYNC_IND);
NR_RRC_MAC_SYNC_IND (message_p).frame = frame;
NR_RRC_MAC_SYNC_IND (message_p).in_sync = in_sync;
itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(module_id), message_p);
}
void nr_mac_rrc_data_ind_ue(const module_id_t module_id,
const int CC_id,
const uint8_t gNB_index,
const int hfn,
const frame_t frame,
const int slot,
const rnti_t rnti,
const uint32_t cellid,
const long arfcn,
const channel_t channel,
const uint8_t* pduP,
const sdu_size_t pdu_len)
{
sdu_size_t sdu_size = 0;
MessageDef *message_p;
switch(channel) {
case NR_BCCH_BCH:
case NR_BCCH_DL_SCH:
message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_BCCH_DATA_IND);
memset(NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu, 0, BCCH_SDU_SIZE);
if (pdu_len > 0) {
LOG_T(NR_RRC,
"[UE %d] Received SDU for NR-BCCH-DL-SCH on SRB %u from gNB %d\n",
module_id,
channel & RAB_OFFSET,
gNB_index);
int msg_sdu_size = BCCH_SDU_SIZE;
if (pdu_len > msg_sdu_size) {
LOG_E(NR_RRC, "SDU larger than NR-BCCH-DL-SCH SDU buffer size (%d, %d)", sdu_size, msg_sdu_size);
sdu_size = msg_sdu_size;
} else {
sdu_size = pdu_len;
}
memcpy(NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu, pduP, sdu_size);
NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu_size = sdu_size;
}
else {
NR_RRC_MAC_BCCH_DATA_IND (message_p).sdu_size = 0;
}
NR_RRC_MAC_BCCH_DATA_IND (message_p).hfn = hfn;
NR_RRC_MAC_BCCH_DATA_IND (message_p).frame = frame; //frameP
NR_RRC_MAC_BCCH_DATA_IND (message_p).slot = slot;
NR_RRC_MAC_BCCH_DATA_IND (message_p).gnb_index = gNB_index;
NR_RRC_MAC_BCCH_DATA_IND (message_p).phycellid = cellid;
NR_RRC_MAC_BCCH_DATA_IND (message_p).ssb_arfcn = arfcn;
NR_RRC_MAC_BCCH_DATA_IND (message_p).is_bch = (channel == NR_BCCH_BCH);
itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(module_id), message_p);
break;
case NR_SBCCH_SL_BCH:
if (pdu_len > 0) {
LOG_T(NR_RRC, "[UE %d] Received SL-MIB for NR_SBCCH_SL_BCH.\n", module_id);
int msg_sdu_size = BCCH_SDU_SIZE;
if (pdu_len > msg_sdu_size) {
LOG_E(NR_RRC, "SDU larger than NR_SBCCH_SL_BCH SDU buffer size (%d, %d)", sdu_size, msg_sdu_size);
sdu_size = msg_sdu_size;
} else {
sdu_size = pdu_len;
}
message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_SBCCH_DATA_IND);
memset(NR_RRC_MAC_SBCCH_DATA_IND (message_p).sdu, 0, BCCH_SDU_SIZE);
memcpy(NR_RRC_MAC_SBCCH_DATA_IND (message_p).sdu, pduP, sdu_size);
NR_RRC_MAC_SBCCH_DATA_IND (message_p).hfn = hfn;
NR_RRC_MAC_SBCCH_DATA_IND (message_p).frame = frame; //frameP
NR_RRC_MAC_SBCCH_DATA_IND (message_p).slot = slot;
NR_RRC_MAC_SBCCH_DATA_IND (message_p).sdu_size = sdu_size;
NR_RRC_MAC_SBCCH_DATA_IND(message_p).rx_slss_id = cellid; // cellid is rx slss id
itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(module_id), message_p);
}
break;
default:
AssertFatal(false, "Invalid channel in data indication\n");
}
}
void process_msg_rcc_to_mac(nr_mac_rrc_message_t *msg, int instance_id)
{
switch (msg->payload_type) {
case NR_MAC_RRC_CONFIG_RESET:
nr_rrc_mac_config_req_reset(instance_id, msg->payload.config_reset.cause);
break;
case NR_MAC_RRC_CONFIG_CG:
nr_rrc_mac_config_req_cg(instance_id,
0,
msg->payload.config_cg.hfn,
msg->payload.config_cg.frame,
msg->payload.config_cg.cellGroupConfig,
msg->payload.config_cg.UE_NR_Capability);
ASN_STRUCT_FREE(asn_DEF_NR_CellGroupConfig, msg->payload.config_cg.cellGroupConfig);
break;
case NR_MAC_RRC_CONFIG_MIB:
nr_rrc_mac_config_req_mib(instance_id,
0,
msg->payload.config_mib.bcch->message.choice.mib,
msg->payload.config_mib.access_barred);
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, msg->payload.config_mib.bcch);
break;
case NR_MAC_RRC_CONFIG_SIB1: {
NR_SIB1_t *sib1 = msg->payload.config_sib1.sib1;
bool can_start_ra = msg->payload.config_sib1.can_start_ra;
nr_rrc_mac_config_req_sib1(instance_id, 0, sib1, can_start_ra);
SEQUENCE_free(&asn_DEF_NR_SIB1, msg->payload.config_sib1.sib1, ASFM_FREE_EVERYTHING);
} break;
case NR_MAC_RRC_CONFIG_OTHER_SIB: {
nr_rrc_mac_config_other_sib(instance_id,
msg->payload.config_other_sib.sib19,
msg->payload.config_other_sib.hfn,
msg->payload.config_other_sib.frame,
msg->payload.config_other_sib.can_start_ra);
} break;
case NR_MAC_RRC_SCHED_SIB:
nr_rrc_mac_sched_sib(instance_id, msg->payload.sched_sib.get_sib);
break;
case NR_MAC_RRC_RESUME_RB:
nr_rrc_mac_resume_rb(instance_id, msg->payload.resume_rb.is_srb, msg->payload.resume_rb.rb_id);
break;
default:
LOG_E(NR_MAC, "Unexpected msg from RRC: %d\n", msg->payload_type);
}
}
void nr_mac_rrc_inactivity_timer_ind(const module_id_t mod_id)
{
MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_INAC_IND);
NR_RRC_MAC_INAC_IND (message_p).inactivity_timer_expired = true;
itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(mod_id), message_p);
}
void nr_mac_rrc_msg3_ind(const module_id_t mod_id, const int rnti, bool prepare_payload)
{
MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_MSG3_IND);
NR_RRC_MAC_MSG3_IND (message_p).rnti = rnti;
NR_RRC_MAC_MSG3_IND (message_p).prepare_payload = prepare_payload;
itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(mod_id), message_p);
}
void nr_ue_rrc_timer_trigger(int instance, int hfn, int frame, int gnb_id)
{
MessageDef *message_p;
message_p = itti_alloc_new_message(TASK_RRC_NRUE, 0, NRRRC_FRAME_PROCESS);
NRRRC_FRAME_PROCESS(message_p).hfn = hfn;
NRRRC_FRAME_PROCESS(message_p).frame = frame;
NRRRC_FRAME_PROCESS(message_p).gnb_id = gnb_id;
LOG_D(NR_RRC, "RRC timer trigger: frame %d\n", frame);
itti_send_msg_to_task(TASK_RRC_NRUE, instance, message_p);
}
void nr_mac_rrc_ra_ind(const module_id_t mod_id, bool success)
{
MessageDef *message_p = itti_alloc_new_message(TASK_MAC_UE, 0, NR_RRC_MAC_RA_IND);
NR_RRC_MAC_RA_IND (message_p).RA_succeeded = success;
itti_send_msg_to_task(TASK_RRC_NRUE, GNB_MODULE_ID_TO_INSTANCE(mod_id), message_p);
}
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